use std::{
    collections::BTreeMap,
    convert::Infallible,
    time::{Duration, SystemTime, UNIX_EPOCH},
};

use axum::{
    Json,
    extract::{Extension, Path, State, rejection::JsonRejection},
    http::{HeaderName, StatusCode, header},
    response::{
        IntoResponse, Response,
        sse::{Event, Sse},
    },
};
use base64::{Engine as _, engine::general_purpose::STANDARD as BASE64_STANDARD};
use futures_util::{StreamExt, stream::FuturesUnordered};
use image::{GenericImageView, ImageFormat};
use module_match3d::{
    MATCH3D_MESSAGE_ID_PREFIX, MATCH3D_PROFILE_ID_PREFIX, MATCH3D_RUN_ID_PREFIX,
    MATCH3D_SESSION_ID_PREFIX,
};
use platform_llm::{LlmMessage, LlmTextRequest};
use platform_oss::{LegacyAssetPrefix, OssObjectAccess, OssPutObjectRequest};
use serde::{Deserialize, Serialize};
use serde_json::{Value, json};
use shared_contracts::{
    hyper3d as hyper3d_contract,
    creation_audio::CreationAudioAsset,
    match3d_agent::{
        CreateMatch3DAgentSessionRequest, ExecuteMatch3DAgentActionRequest,
        Match3DAgentActionResponse, Match3DAgentMessageResponse, Match3DAgentSessionResponse,
        Match3DAgentSessionSnapshotResponse, Match3DAnchorItemResponse, Match3DAnchorPackResponse,
        Match3DCreatorConfigResponse,
        Match3DGeneratedItemAssetResponse as Match3DAgentGeneratedItemAssetResponse,
        Match3DResultDraftResponse, SendMatch3DAgentMessageRequest,
    },
    match3d_runtime::{
        ClickMatch3DItemRequest, Match3DClickConfirmationResponse, Match3DClickResponse,
        Match3DItemSnapshotResponse, Match3DRunResponse, Match3DRunSnapshotResponse,
        Match3DTraySlotResponse, StartMatch3DRunRequest, StopMatch3DRunRequest,
    },
    match3d_works::{
        GenerateMatch3DBackgroundImageRequest, GenerateMatch3DBackgroundImageResponse,
        GenerateMatch3DCoverImageRequest, GenerateMatch3DCoverImageResponse,
        GenerateMatch3DItemAssetsRequest, GenerateMatch3DItemAssetsResponse,
        Match3DWorkDetailResponse, Match3DWorkMutationResponse, Match3DWorkProfileResponse,
        Match3DWorkSummaryResponse, Match3DWorksResponse, PersistMatch3DGeneratedModelRequest,
        PersistMatch3DGeneratedModelResponse, PutMatch3DAudioAssetsRequest,
        PutMatch3DWorkRequest,
    },
};
use shared_kernel::build_prefixed_uuid_id;
use spacetime_client::{
    Match3DAgentMessageFinalizeRecordInput, Match3DAgentMessageRecord,
    Match3DAgentMessageSubmitRecordInput, Match3DAgentSessionCreateRecordInput,
    Match3DAgentSessionRecord, Match3DAnchorItemRecord, Match3DAnchorPackRecord,
    Match3DClickConfirmationRecord, Match3DCompileDraftRecordInput, Match3DCreatorConfigRecord,
    Match3DItemSnapshotRecord, Match3DResultDraftRecord, Match3DRunClickRecordInput,
    Match3DRunRecord, Match3DRunRestartRecordInput, Match3DRunStartRecordInput,
    Match3DRunStopRecordInput, Match3DRunTimeUpRecordInput, Match3DTraySlotRecord,
    Match3DWorkProfileRecord, Match3DWorkUpdateRecordInput, SpacetimeClientError,
};

use crate::{
    api_response::json_success_body,
    auth::AuthenticatedAccessToken,
    http_error::AppError,
    openai_image_generation::{
        DownloadedOpenAiImage, build_openai_image_http_client, create_openai_image_generation,
        require_openai_image_settings,
    },
    platform_errors::map_oss_error,
    request_context::RequestContext,
    state::AppState,
    vector_engine_audio_generation::{
        GeneratedCreationAudioTarget, generate_background_music_asset_for_creation,
        generate_sound_effect_asset_for_creation,
    },
    work_play_tracking::{WorkPlayTrackingDraft, record_work_play_start_after_success},
};

const MATCH3D_AGENT_PROVIDER: &str = "match3d-agent";
const MATCH3D_WORKS_PROVIDER: &str = "match3d-works";
const MATCH3D_RUNTIME_PROVIDER: &str = "match3d-runtime";
const MATCH3D_DEFAULT_THEME: &str = "缤纷玩具";
const MATCH3D_DEFAULT_CLEAR_COUNT: u32 = 12;
const MATCH3D_DEFAULT_DIFFICULTY: u32 = 4;
const MATCH3D_MATERIAL_ITEM_BATCH_SIZE: usize = 5;
const MATCH3D_ITEM_VIEW_COUNT: usize = 5;
const MATCH3D_MATERIAL_GRID_SIZE: u32 = 5;
const MATCH3D_MAX_GENERATED_ITEM_COUNT: usize = 21;
const MATCH3D_LEGACY_MODEL_DOWNLOAD_TIMEOUT_MS: u64 = 3 * 60_000;
const MATCH3D_OSS_PUT_TIMEOUT_MS: u64 = 3 * 60_000;
const MATCH3D_LEGACY_MODEL_MAX_BYTES: usize = 120 * 1024 * 1024;
const MATCH3D_ITEM_IMAGE_MAX_BYTES: usize = 20 * 1024 * 1024;
const MATCH3D_WORK_METADATA_LLM_MODEL: &str = "gpt-4o";
const MATCH3D_BACKGROUND_REFERENCE_IMAGE_PATH: &str =
    "public/match3d-background-references/pot-fused-reference.png";
const MATCH3D_QUESTION_THEME: &str = "你想创作什么题材";
const MATCH3D_QUESTION_CLEAR_COUNT: &str = "需要消除多少次才能通关";
const MATCH3D_QUESTION_DIFFICULTY: &str = "如果难度是从1-10，你要创作的关卡是难度几";
const MATCH3D_BACKGROUND_MUSIC_ASSET_KIND: &str = "match3d_background_music";
const MATCH3D_CLICK_SOUND_ASSET_KIND: &str = "match3d_click_sound";

#[derive(Clone, Debug, Serialize, Deserialize)]
#[serde(rename_all = "camelCase")]
struct Match3DConfigJson {
    theme_text: String,
    reference_image_src: Option<String>,
    clear_count: u32,
    difficulty: u32,
    #[serde(default)]
    asset_style_id: Option<String>,
    #[serde(default)]
    asset_style_label: Option<String>,
    #[serde(default)]
    asset_style_prompt: Option<String>,
    #[serde(default)]
    generate_click_sound: bool,
}

#[derive(Clone, Debug)]
struct Match3DGeneratedItemAsset {
    item_id: String,
    item_name: String,
    image_src: Option<String>,
    image_object_key: Option<String>,
    image_views: Vec<Match3DGeneratedItemImageView>,
    model_src: Option<String>,
    model_object_key: Option<String>,
    model_file_name: Option<String>,
    task_uuid: Option<String>,
    subscription_key: Option<String>,
    sound_prompt: Option<String>,
    background_music_title: Option<String>,
    background_music_style: Option<String>,
    background_music_prompt: Option<String>,
    background_music: Option<CreationAudioAsset>,
    click_sound: Option<CreationAudioAsset>,
    background_asset: Option<Match3DGeneratedBackgroundAsset>,
    status: String,
    error: Option<String>,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq, Eq)]
#[serde(rename_all = "camelCase")]
struct Match3DGeneratedItemImageView {
    view_id: String,
    view_index: u32,
    #[serde(default)]
    image_src: Option<String>,
    #[serde(default)]
    image_object_key: Option<String>,
}

#[derive(Clone, Debug, Serialize, Deserialize)]
#[serde(rename_all = "camelCase")]
struct Match3DGeneratedBackgroundAsset {
    prompt: String,
    #[serde(default)]
    image_src: Option<String>,
    #[serde(default)]
    image_object_key: Option<String>,
    status: String,
    #[serde(default)]
    error: Option<String>,
}

#[derive(Clone, Debug)]
struct Match3DGeneratedWorkMetadata {
    game_name: String,
    tags: Vec<String>,
}

#[derive(Clone, Debug)]
struct Match3DGeneratedItemPlan {
    name: String,
    sound_prompt: String,
}

#[derive(Clone, Debug)]
struct Match3DGeneratedBackgroundMusicPlan {
    title: String,
    style: String,
    prompt: String,
}

#[derive(Clone, Debug)]
struct Match3DGeneratedDraftPlan {
    metadata: Match3DGeneratedWorkMetadata,
    items: Vec<Match3DGeneratedItemPlan>,
    background_music: Match3DGeneratedBackgroundMusicPlan,
    background_prompt: String,
}

#[derive(Clone, Debug, Serialize, Deserialize)]
#[serde(rename_all = "camelCase")]
struct Match3DGeneratedItemAssetJson {
    item_id: String,
    item_name: String,
    #[serde(default)]
    image_src: Option<String>,
    #[serde(default)]
    image_object_key: Option<String>,
    #[serde(default)]
    image_views: Vec<Match3DGeneratedItemImageView>,
    #[serde(default)]
    model_src: Option<String>,
    #[serde(default)]
    model_object_key: Option<String>,
    #[serde(default)]
    model_file_name: Option<String>,
    #[serde(default)]
    task_uuid: Option<String>,
    #[serde(default)]
    subscription_key: Option<String>,
    #[serde(default)]
    sound_prompt: Option<String>,
    #[serde(default)]
    background_music_title: Option<String>,
    #[serde(default)]
    background_music_style: Option<String>,
    #[serde(default)]
    background_music_prompt: Option<String>,
    #[serde(default)]
    background_music: Option<CreationAudioAsset>,
    #[serde(default)]
    click_sound: Option<CreationAudioAsset>,
    #[serde(default)]
    background_asset: Option<Match3DGeneratedBackgroundAsset>,
    status: String,
    #[serde(default)]
    error: Option<String>,
}

#[derive(Clone, Debug)]
struct Match3DAssetUpload {
    src: String,
    object_key: String,
}

struct Match3DDownloadedModel {
    bytes: Vec<u8>,
    file_name: String,
    content_type: String,
}

#[derive(Clone, Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub(crate) struct CompileMatch3DDraftRequest {
    #[serde(default)]
    game_name: Option<String>,
    #[serde(default)]
    summary: Option<String>,
    #[serde(default)]
    tags: Option<Vec<String>>,
    #[serde(default)]
    cover_image_src: Option<String>,
    #[serde(default)]
    generate_click_sound: Option<bool>,
}

#[derive(Clone, Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub(crate) struct GenerateMatch3DWorkTagsRequest {
    game_name: String,
    theme_text: String,
}

#[derive(Clone, Debug, Serialize)]
#[serde(rename_all = "camelCase")]
pub(crate) struct GenerateMatch3DWorkTagsResponse {
    tags: Vec<String>,
}

struct Match3DWorkAssetContext {
    owner_user_id: String,
    session_id: String,
    profile: Match3DWorkProfileRecord,
    config: Match3DConfigJson,
    assets: Vec<Match3DGeneratedItemAsset>,
}

pub async fn create_match3d_agent_session(
    State(state): State<AppState>,
    Extension(request_context): Extension<RequestContext>,
    Extension(authenticated): Extension<AuthenticatedAccessToken>,
    payload: Result<Json<CreateMatch3DAgentSessionRequest>, JsonRejection>,
) -> Result<Json<Value>, Response> {
    let Json(payload) = match3d_json(payload, &request_context, MATCH3D_AGENT_PROVIDER)?;
    let config = build_config_from_create_request(&payload);
    let seed_text = build_seed_text(&payload, &config);
    let welcome_message_text = MATCH3D_QUESTION_THEME.to_string();

    let session = state
        .spacetime_client()
        .create_match3d_agent_session(Match3DAgentSessionCreateRecordInput {
            session_id: build_prefixed_uuid_id(MATCH3D_SESSION_ID_PREFIX),
            owner_user_id: authenticated.claims().user_id().to_string(),
            seed_text,
            welcome_message_id: build_prefixed_uuid_id(MATCH3D_MESSAGE_ID_PREFIX),
            welcome_message_text,
            config_json: serialize_match3d_config(&config),
            created_at_micros: current_utc_micros(),
        })
        .await
        .map_err(|error| {
            match3d_error_response(
                &request_context,
                MATCH3D_AGENT_PROVIDER,
                map_match3d_client_error(error),
            )
        })?;

    Ok(json_success_body(
        Some(&request_context),
        Match3DAgentSessionResponse {
            session: map_match3d_agent_session_response(session),
        },
    ))
}

pub async fn get_match3d_agent_session(
    State(state): State<AppState>,
    Path(session_id): Path<String>,
    Extension(request_context): Extension<RequestContext>,
    Extension(authenticated): Extension<AuthenticatedAccessToken>,
) -> Result<Json<Value>, Response> {
    ensure_non_empty(
        &request_context,
        MATCH3D_AGENT_PROVIDER,
        &session_id,
        "sessionId",
    )?;

    let session = state
        .spacetime_client()
        .get_match3d_agent_session(session_id, authenticated.claims().user_id().to_string())
        .await
        .map_err(|error| {
            match3d_error_response(
                &request_context,
                MATCH3D_AGENT_PROVIDER,
                map_match3d_client_error(error),
            )
        })?;

    Ok(json_success_body(
        Some(&request_context),
        Match3DAgentSessionResponse {
            session: map_match3d_agent_session_response(session),
        },
    ))
}

pub async fn submit_match3d_agent_message(
    State(state): State<AppState>,
    Path(session_id): Path<String>,
    Extension(request_context): Extension<RequestContext>,
    Extension(authenticated): Extension<AuthenticatedAccessToken>,
    payload: Result<Json<SendMatch3DAgentMessageRequest>, JsonRejection>,
) -> Result<Json<Value>, Response> {
    let Json(payload) = match3d_json(payload, &request_context, MATCH3D_AGENT_PROVIDER)?;
    let session = submit_and_finalize_match3d_message(
        &state,
        &request_context,
        authenticated.claims().user_id(),
        session_id,
        payload,
    )
    .await?;

    Ok(json_success_body(
        Some(&request_context),
        Match3DAgentSessionResponse {
            session: map_match3d_agent_session_response(session),
        },
    ))
}

pub async fn stream_match3d_agent_message(
    State(state): State<AppState>,
    Path(session_id): Path<String>,
    Extension(request_context): Extension<RequestContext>,
    Extension(authenticated): Extension<AuthenticatedAccessToken>,
    payload: Result<Json<SendMatch3DAgentMessageRequest>, JsonRejection>,
) -> Result<Response, Response> {
    let Json(payload) = match3d_json(payload, &request_context, MATCH3D_AGENT_PROVIDER)?;
    ensure_non_empty(
        &request_context,
        MATCH3D_AGENT_PROVIDER,
        &session_id,
        "sessionId",
    )?;

    let owner_user_id = authenticated.claims().user_id().to_string();
    let request_context_for_stream = request_context.clone();
    let stream = async_stream::stream! {
        let result = submit_and_finalize_match3d_message(
            &state,
            &request_context_for_stream,
            owner_user_id.as_str(),
            session_id,
            payload,
        )
        .await;

        match result {
            Ok(session) => {
                let session_response = map_match3d_agent_session_response(session);
                if let Some(reply) = session_response.last_assistant_reply.clone() {
                    yield Ok::<Event, Infallible>(match3d_sse_json_event_or_error(
                        "reply_delta",
                        json!({ "text": reply }),
                    ));
                }
                yield Ok::<Event, Infallible>(match3d_sse_json_event_or_error(
                    "session",
                    json!({ "session": session_response }),
                ));
                yield Ok::<Event, Infallible>(match3d_sse_json_event_or_error(
                    "done",
                    json!({ "ok": true }),
                ));
            }
            Err(response) => {
                yield Ok::<Event, Infallible>(match3d_sse_json_event_or_error(
                    "error",
                    json!({ "message": response.status().to_string() }),
                ));
            }
        }
    };

    Ok(Sse::new(stream).into_response())
}

pub async fn execute_match3d_agent_action(
    State(state): State<AppState>,
    Path(session_id): Path<String>,
    Extension(request_context): Extension<RequestContext>,
    Extension(authenticated): Extension<AuthenticatedAccessToken>,
    payload: Result<Json<ExecuteMatch3DAgentActionRequest>, JsonRejection>,
) -> Result<Json<Value>, Response> {
    let Json(payload) = match3d_json(payload, &request_context, MATCH3D_AGENT_PROVIDER)?;
    ensure_non_empty(
        &request_context,
        MATCH3D_AGENT_PROVIDER,
        &session_id,
        "sessionId",
    )?;

    if payload.action.trim() != "match3d_compile_draft" {
        return Err(match3d_bad_request(
            &request_context,
            MATCH3D_AGENT_PROVIDER,
            "unknown match3d action",
        ));
    }

    let (session, generated_item_assets) = compile_match3d_draft_for_session(
        &state,
        &request_context,
        &authenticated,
        session_id,
        payload.game_name,
        payload.summary,
        payload.tags,
        payload.cover_image_src,
        payload.generate_click_sound,
    )
    .await?;

    Ok(json_success_body(
        Some(&request_context),
        Match3DAgentActionResponse {
            session: map_match3d_agent_session_response_with_assets(
                session,
                &generated_item_assets,
            ),
        },
    ))
}

pub async fn compile_match3d_agent_draft(
    State(state): State<AppState>,
    Path(session_id): Path<String>,
    Extension(request_context): Extension<RequestContext>,
    Extension(authenticated): Extension<AuthenticatedAccessToken>,
    payload: Result<Json<CompileMatch3DDraftRequest>, JsonRejection>,
) -> Result<Json<Value>, Response> {
    let payload = payload
        .map(|Json(payload)| payload)
        .unwrap_or(CompileMatch3DDraftRequest {
            game_name: None,
            summary: None,
            tags: None,
            cover_image_src: None,
            generate_click_sound: None,
        });
    ensure_non_empty(
        &request_context,
        MATCH3D_AGENT_PROVIDER,
        &session_id,
        "sessionId",
    )?;

    let (session, generated_item_assets) = compile_match3d_draft_for_session(
        &state,
        &request_context,
        &authenticated,
        session_id,
        payload.game_name,
        payload.summary,
        payload.tags,
        payload.cover_image_src,
        payload.generate_click_sound,
    )
    .await?;

    Ok(json_success_body(
        Some(&request_context),
        Match3DAgentActionResponse {
            session: map_match3d_agent_session_response_with_assets(
                session,
                &generated_item_assets,
            ),
        },
    ))
}

pub async fn get_match3d_works(
    State(state): State<AppState>,
    Extension(request_context): Extension<RequestContext>,
    Extension(authenticated): Extension<AuthenticatedAccessToken>,
) -> Result<Json<Value>, Response> {
    let items = state
        .spacetime_client()
        .list_match3d_works(authenticated.claims().user_id().to_string())
        .await
        .map_err(|error| {
            match3d_error_response(
                &request_context,
                MATCH3D_WORKS_PROVIDER,
                map_match3d_client_error(error),
            )
        })?;

    Ok(json_success_body(
        Some(&request_context),
        Match3DWorksResponse {
            items: items
                .into_iter()
                .map(map_match3d_work_summary_response)
                .collect(),
        },
    ))
}

pub async fn list_match3d_gallery(
    State(state): State<AppState>,
    Extension(request_context): Extension<RequestContext>,
) -> Result<Json<Value>, Response> {
    let items = state
        .spacetime_client()
        .list_match3d_gallery()
        .await
        .map_err(|error| {
            match3d_error_response(
                &request_context,
                MATCH3D_WORKS_PROVIDER,
                map_match3d_client_error(error),
            )
        })?;

    Ok(json_success_body(
        Some(&request_context),
        Match3DWorksResponse {
            items: items
                .into_iter()
                .map(map_match3d_work_summary_response)
                .collect(),
        },
    ))
}

pub async fn get_match3d_work_detail(
    State(state): State<AppState>,
    Path(profile_id): Path<String>,
    Extension(request_context): Extension<RequestContext>,
    Extension(authenticated): Extension<AuthenticatedAccessToken>,
) -> Result<Json<Value>, Response> {
    ensure_non_empty(
        &request_context,
        MATCH3D_WORKS_PROVIDER,
        &profile_id,
        "profileId",
    )?;

    let item = state
        .spacetime_client()
        .get_match3d_work_detail(profile_id, authenticated.claims().user_id().to_string())
        .await
        .map_err(|error| {
            match3d_error_response(
                &request_context,
                MATCH3D_WORKS_PROVIDER,
                map_match3d_client_error(error),
            )
        })?;

    Ok(json_success_body(
        Some(&request_context),
        Match3DWorkDetailResponse {
            item: map_match3d_work_profile_response(item),
        },
    ))
}

pub async fn put_match3d_work(
    State(state): State<AppState>,
    Path(profile_id): Path<String>,
    Extension(request_context): Extension<RequestContext>,
    Extension(authenticated): Extension<AuthenticatedAccessToken>,
    payload: Result<Json<PutMatch3DWorkRequest>, JsonRejection>,
) -> Result<Json<Value>, Response> {
    let Json(payload) = match3d_json(payload, &request_context, MATCH3D_WORKS_PROVIDER)?;
    ensure_non_empty(
        &request_context,
        MATCH3D_WORKS_PROVIDER,
        &profile_id,
        "profileId",
    )?;

    let existing = state
        .spacetime_client()
        .get_match3d_work_detail(
            profile_id.clone(),
            authenticated.claims().user_id().to_string(),
        )
        .await
        .map_err(|error| {
            match3d_error_response(
                &request_context,
                MATCH3D_WORKS_PROVIDER,
                map_match3d_client_error(error),
            )
        })?;
    let theme_text = payload
        .theme_text
        .clone()
        .filter(|value| !value.trim().is_empty())
        .unwrap_or(existing.theme_text);
    let item = state
        .spacetime_client()
        .update_match3d_work(Match3DWorkUpdateRecordInput {
            profile_id,
            owner_user_id: authenticated.claims().user_id().to_string(),
            game_name: payload.game_name,
            theme_text,
            summary_text: payload.summary,
            tags_json: serde_json::to_string(&normalize_tags(payload.tags)).unwrap_or_default(),
            cover_image_src: payload.cover_image_src.unwrap_or_default(),
            cover_asset_id: String::new(),
            clear_count: payload.clear_count,
            difficulty: payload.difficulty,
            updated_at_micros: current_utc_micros(),
        })
        .await
        .map_err(|error| {
            match3d_error_response(
                &request_context,
                MATCH3D_WORKS_PROVIDER,
                map_match3d_client_error(error),
            )
        })?;

    Ok(json_success_body(
        Some(&request_context),
        Match3DWorkMutationResponse {
            item: map_match3d_work_profile_response(item),
        },
    ))
}

pub async fn put_match3d_audio_assets(
    State(state): State<AppState>,
    Path(profile_id): Path<String>,
    Extension(request_context): Extension<RequestContext>,
    Extension(authenticated): Extension<AuthenticatedAccessToken>,
    payload: Result<Json<PutMatch3DAudioAssetsRequest>, JsonRejection>,
) -> Result<Json<Value>, Response> {
    let Json(payload) = match3d_json(payload, &request_context, MATCH3D_WORKS_PROVIDER)?;
    ensure_non_empty(
        &request_context,
        MATCH3D_WORKS_PROVIDER,
        &profile_id,
        "profileId",
    )?;

    let owner_user_id = authenticated.claims().user_id().to_string();
    let existing = state
        .spacetime_client()
        .get_match3d_work_detail(profile_id.clone(), owner_user_id.clone())
        .await
        .map_err(|error| {
            match3d_error_response(
                &request_context,
                MATCH3D_WORKS_PROVIDER,
                map_match3d_client_error(error),
            )
        })?;
    let session_id = existing.source_session_id.clone().ok_or_else(|| {
        match3d_error_response(
            &request_context,
            MATCH3D_WORKS_PROVIDER,
            AppError::from_status(StatusCode::BAD_REQUEST).with_details(json!({
                "provider": MATCH3D_WORKS_PROVIDER,
                "message": "抓大鹅作品缺少来源 session，无法写回音频素材",
            })),
        )
    })?;
    let assets = payload
        .generated_item_assets
        .into_iter()
        .map(Match3DGeneratedItemAsset::from)
        .collect::<Vec<_>>();
    let session = upsert_match3d_draft_snapshot(
        &state,
        &request_context,
        &authenticated,
        session_id,
        owner_user_id.clone(),
        profile_id.clone(),
        Some(existing.game_name),
        Some(existing.summary),
        Some(serde_json::to_string(&existing.tags).unwrap_or_default()),
        existing.cover_image_src,
        None,
        serialize_match3d_generated_item_assets(&assets),
    )
    .await?;

    let item = state
        .spacetime_client()
        .get_match3d_work_detail(profile_id, owner_user_id)
        .await
        .map_err(|error| {
            match3d_error_response(
                &request_context,
                MATCH3D_WORKS_PROVIDER,
                map_match3d_client_error(error),
            )
        })?;
    let _ = session;
    Ok(json_success_body(
        Some(&request_context),
        Match3DWorkMutationResponse {
            item: map_match3d_work_profile_response(item),
        },
    ))
}

pub async fn persist_match3d_generated_model(
    State(state): State<AppState>,
    Path(profile_id): Path<String>,
    Extension(request_context): Extension<RequestContext>,
    Extension(authenticated): Extension<AuthenticatedAccessToken>,
    payload: Result<Json<PersistMatch3DGeneratedModelRequest>, JsonRejection>,
) -> Result<Json<Value>, Response> {
    let Json(payload) = match3d_json(payload, &request_context, MATCH3D_WORKS_PROVIDER)?;
    ensure_non_empty(
        &request_context,
        MATCH3D_WORKS_PROVIDER,
        &profile_id,
        "profileId",
    )?;
    ensure_non_empty(
        &request_context,
        MATCH3D_WORKS_PROVIDER,
        &payload.item_id,
        "itemId",
    )?;
    ensure_non_empty(
        &request_context,
        MATCH3D_WORKS_PROVIDER,
        &payload.item_name,
        "itemName",
    )?;
    ensure_non_empty(
        &request_context,
        MATCH3D_WORKS_PROVIDER,
        &payload.source_url,
        "sourceUrl",
    )?;

    let owner_user_id = authenticated.claims().user_id().to_string();
    let existing = state
        .spacetime_client()
        .get_match3d_work_detail(profile_id.clone(), owner_user_id.clone())
        .await
        .map_err(|error| {
            match3d_error_response(
                &request_context,
                MATCH3D_WORKS_PROVIDER,
                map_match3d_client_error(error),
            )
        })?;
    let session_id = existing.source_session_id.clone().ok_or_else(|| {
        match3d_error_response(
            &request_context,
            MATCH3D_WORKS_PROVIDER,
            AppError::from_status(StatusCode::BAD_REQUEST).with_details(json!({
                "provider": MATCH3D_WORKS_PROVIDER,
                "message": "抓大鹅作品缺少来源 session，无法保存历史模型",
            })),
        )
    })?;

    let mut assets =
        parse_match3d_generated_item_assets(existing.generated_item_assets_json.as_deref())
            .into_iter()
            .map(Match3DGeneratedItemAsset::from)
            .collect::<Vec<_>>();
    let current_asset = assets
        .iter()
        .find(|asset| asset.item_id == payload.item_id)
        .cloned();
    let item_name = normalize_match3d_item_name(payload.item_name.as_str());
    let item_name = if item_name.is_empty() {
        current_asset
            .as_ref()
            .map(|asset| asset.item_name.clone())
            .unwrap_or_else(|| payload.item_name.trim().to_string())
    } else {
        item_name
    };
    let model_file = hyper3d_contract::Hyper3dDownloadFilePayload {
        name: normalize_optional_text(payload.file_name.as_deref())
            .unwrap_or_else(|| "model.glb".to_string()),
        url: payload.source_url.trim().to_string(),
    };
    let downloaded_model = download_match3d_legacy_model(&model_file)
        .await
        .map_err(|error| match3d_error_response(&request_context, MATCH3D_WORKS_PROVIDER, error))?;
    let task_uuid = normalize_optional_text(payload.task_uuid.as_deref());
    let item_slug = build_match3d_item_slug(payload.item_id.as_str(), item_name.as_str());
    let generated_at_micros = current_utc_micros();
    let uploaded_model = persist_match3d_generated_bytes(
        &state,
        owner_user_id.as_str(),
        session_id.as_str(),
        profile_id.as_str(),
        &[
            "items",
            item_slug.as_str(),
            "model",
            task_uuid.as_deref().unwrap_or("manual"),
        ],
        downloaded_model.file_name.as_str(),
        downloaded_model.content_type.as_str(),
        downloaded_model.bytes,
        "match3d_item_model",
        task_uuid.as_deref(),
        generated_at_micros,
    )
    .await
    .map_err(|error| match3d_error_response(&request_context, MATCH3D_WORKS_PROVIDER, error))?;
    let next_asset = Match3DGeneratedItemAsset {
        item_id: payload.item_id,
        item_name,
        image_src: current_asset
            .as_ref()
            .and_then(|asset| asset.image_src.clone()),
        image_object_key: current_asset
            .as_ref()
            .and_then(|asset| asset.image_object_key.clone()),
        image_views: current_asset
            .as_ref()
            .map(|asset| asset.image_views.clone())
            .unwrap_or_default(),
        model_src: Some(uploaded_model.src),
        model_object_key: Some(uploaded_model.object_key),
        model_file_name: Some(downloaded_model.file_name),
        task_uuid,
        subscription_key: normalize_optional_text(payload.subscription_key.as_deref()).or_else(
            || {
                current_asset
                    .as_ref()
                    .and_then(|asset| asset.subscription_key.clone())
            },
        ),
        sound_prompt: current_asset
            .as_ref()
            .and_then(|asset| asset.sound_prompt.clone()),
        background_music_title: current_asset
            .as_ref()
            .and_then(|asset| asset.background_music_title.clone()),
        background_music_style: current_asset
            .as_ref()
            .and_then(|asset| asset.background_music_style.clone()),
        background_music_prompt: current_asset
            .as_ref()
            .and_then(|asset| asset.background_music_prompt.clone()),
        background_music: current_asset
            .as_ref()
            .and_then(|asset| asset.background_music.clone()),
        click_sound: current_asset
            .as_ref()
            .and_then(|asset| asset.click_sound.clone()),
        background_asset: current_asset
            .as_ref()
            .and_then(|asset| asset.background_asset.clone()),
        status: "model_ready".to_string(),
        error: None,
    };
    upsert_match3d_generated_item_asset(&mut assets, next_asset.clone());
    persist_match3d_generated_item_assets_snapshot(
        &state,
        &request_context,
        &authenticated,
        session_id.as_str(),
        owner_user_id.as_str(),
        profile_id.as_str(),
        &assets,
    )
    .await?;

    Ok(json_success_body(
        Some(&request_context),
        PersistMatch3DGeneratedModelResponse {
            asset: map_match3d_generated_item_asset_for_work(Match3DGeneratedItemAssetJson::from(
                next_asset,
            )),
        },
    ))
}

pub async fn generate_match3d_cover_image(
    State(state): State<AppState>,
    Path(profile_id): Path<String>,
    Extension(request_context): Extension<RequestContext>,
    Extension(authenticated): Extension<AuthenticatedAccessToken>,
    payload: Result<Json<GenerateMatch3DCoverImageRequest>, JsonRejection>,
) -> Result<Json<Value>, Response> {
    let Json(payload) = match3d_json(payload, &request_context, MATCH3D_WORKS_PROVIDER)?;
    ensure_non_empty(
        &request_context,
        MATCH3D_WORKS_PROVIDER,
        &profile_id,
        "profileId",
    )?;
    let prompt = normalize_match3d_cover_prompt(payload.prompt.as_str());
    ensure_non_empty(
        &request_context,
        MATCH3D_WORKS_PROVIDER,
        &prompt,
        "prompt",
    )?;

    let context =
        load_match3d_work_asset_context(&state, &request_context, &authenticated, &profile_id)
            .await?;
    let generated_cover = generate_match3d_cover_image_asset(
        &state,
        &context.owner_user_id,
        context.session_id.as_str(),
        profile_id.as_str(),
        &context.config,
        prompt.as_str(),
        payload.reference_image_src,
    )
    .await
    .map_err(|error| match3d_error_response(&request_context, MATCH3D_WORKS_PROVIDER, error))?;

    upsert_match3d_draft_snapshot(
        &state,
        &request_context,
        &authenticated,
        context.session_id.clone(),
        context.owner_user_id.clone(),
        profile_id.clone(),
        Some(context.profile.game_name),
        Some(context.profile.summary),
        Some(serde_json::to_string(&context.profile.tags).unwrap_or_default()),
        Some(generated_cover.src.clone()),
        None,
        None,
    )
    .await?;
    let item = state
        .spacetime_client()
        .get_match3d_work_detail(profile_id.clone(), context.owner_user_id)
        .await
        .map_err(|error| {
            match3d_error_response(
                &request_context,
                MATCH3D_WORKS_PROVIDER,
                map_match3d_client_error(error),
            )
        })?;

    Ok(json_success_body(
        Some(&request_context),
        GenerateMatch3DCoverImageResponse {
            item: map_match3d_work_profile_response(item),
            cover_image_src: generated_cover.src,
            cover_image_object_key: generated_cover.object_key,
            prompt,
        },
    ))
}

pub async fn generate_match3d_background_image_for_work(
    State(state): State<AppState>,
    Path(profile_id): Path<String>,
    Extension(request_context): Extension<RequestContext>,
    Extension(authenticated): Extension<AuthenticatedAccessToken>,
    payload: Result<Json<GenerateMatch3DBackgroundImageRequest>, JsonRejection>,
) -> Result<Json<Value>, Response> {
    let Json(payload) = match3d_json(payload, &request_context, MATCH3D_WORKS_PROVIDER)?;
    ensure_non_empty(
        &request_context,
        MATCH3D_WORKS_PROVIDER,
        &profile_id,
        "profileId",
    )?;
    let prompt = normalize_match3d_background_prompt(payload.prompt.as_str());
    ensure_non_empty(
        &request_context,
        MATCH3D_WORKS_PROVIDER,
        &prompt,
        "prompt",
    )?;

    let context =
        load_match3d_work_asset_context(&state, &request_context, &authenticated, &profile_id)
            .await?;
    let generated_background = generate_match3d_background_image(
        &state,
        context.owner_user_id.as_str(),
        context.session_id.as_str(),
        profile_id.as_str(),
        &context.config,
        prompt.as_str(),
    )
    .await
    .map_err(|error| match3d_error_response(&request_context, MATCH3D_WORKS_PROVIDER, error))?;
    let mut assets = context.assets;
    attach_match3d_background_asset_to_assets(&mut assets, generated_background.clone());
    persist_match3d_generated_item_assets_snapshot(
        &state,
        &request_context,
        &authenticated,
        context.session_id.as_str(),
        context.owner_user_id.as_str(),
        profile_id.as_str(),
        &assets,
    )
    .await?;

    let item = state
        .spacetime_client()
        .get_match3d_work_detail(profile_id, context.owner_user_id)
        .await
        .map_err(|error| {
            match3d_error_response(
                &request_context,
                MATCH3D_WORKS_PROVIDER,
                map_match3d_client_error(error),
            )
        })?;
    let background_image_src = generated_background
        .image_src
        .clone()
        .unwrap_or_default();
    let background_image_object_key = generated_background
        .image_object_key
        .clone()
        .unwrap_or_default();

    Ok(json_success_body(
        Some(&request_context),
        GenerateMatch3DBackgroundImageResponse {
            item: map_match3d_work_profile_response(item),
            background_image_src,
            background_image_object_key,
            generated_background_asset: map_match3d_background_asset_for_work(
                generated_background,
            ),
            prompt,
        },
    ))
}

pub async fn generate_match3d_item_assets_for_work(
    State(state): State<AppState>,
    Path(profile_id): Path<String>,
    Extension(request_context): Extension<RequestContext>,
    Extension(authenticated): Extension<AuthenticatedAccessToken>,
    payload: Result<Json<GenerateMatch3DItemAssetsRequest>, JsonRejection>,
) -> Result<Json<Value>, Response> {
    let Json(payload) = match3d_json(payload, &request_context, MATCH3D_WORKS_PROVIDER)?;
    ensure_non_empty(
        &request_context,
        MATCH3D_WORKS_PROVIDER,
        &profile_id,
        "profileId",
    )?;
    let item_names = normalize_match3d_batch_item_names(payload.item_names);
    if item_names.is_empty() {
        return Err(match3d_bad_request(
            &request_context,
            MATCH3D_WORKS_PROVIDER,
            "请填写至少一个物品名称",
        ));
    }

    let context =
        load_match3d_work_asset_context(&state, &request_context, &authenticated, &profile_id)
            .await?;
    let generated_assets = append_match3d_item_assets(
        &state,
        &request_context,
        &authenticated,
        context.owner_user_id.as_str(),
        context.session_id.as_str(),
        profile_id.as_str(),
        &context.config,
        item_names,
        context.assets,
    )
    .await?;
    persist_match3d_generated_item_assets_snapshot(
        &state,
        &request_context,
        &authenticated,
        context.session_id.as_str(),
        context.owner_user_id.as_str(),
        profile_id.as_str(),
        &generated_assets,
    )
    .await?;

    let item = state
        .spacetime_client()
        .get_match3d_work_detail(profile_id, context.owner_user_id)
        .await
        .map_err(|error| {
            match3d_error_response(
                &request_context,
                MATCH3D_WORKS_PROVIDER,
                map_match3d_client_error(error),
            )
        })?;
    Ok(json_success_body(
        Some(&request_context),
        GenerateMatch3DItemAssetsResponse {
            item: map_match3d_work_profile_response(item),
            generated_item_assets: generated_assets
                .into_iter()
                .map(Match3DGeneratedItemAssetJson::from)
                .map(map_match3d_generated_item_asset_for_work)
                .collect(),
        },
    ))
}

pub async fn generate_match3d_work_tags(
    State(state): State<AppState>,
    Extension(request_context): Extension<RequestContext>,
    Extension(_authenticated): Extension<AuthenticatedAccessToken>,
    payload: Result<Json<GenerateMatch3DWorkTagsRequest>, JsonRejection>,
) -> Result<Json<Value>, Response> {
    let Json(payload) = match3d_json(payload, &request_context, MATCH3D_WORKS_PROVIDER)?;
    let tags = generate_match3d_work_tags_for_profile(
        &state,
        payload.game_name.as_str(),
        payload.theme_text.as_str(),
    )
    .await;

    Ok(json_success_body(
        Some(&request_context),
        GenerateMatch3DWorkTagsResponse { tags },
    ))
}

pub async fn publish_match3d_work(
    State(state): State<AppState>,
    Path(profile_id): Path<String>,
    Extension(request_context): Extension<RequestContext>,
    Extension(authenticated): Extension<AuthenticatedAccessToken>,
) -> Result<Json<Value>, Response> {
    ensure_non_empty(
        &request_context,
        MATCH3D_WORKS_PROVIDER,
        &profile_id,
        "profileId",
    )?;

    let item = state
        .spacetime_client()
        .publish_match3d_work(
            profile_id,
            authenticated.claims().user_id().to_string(),
            current_utc_micros(),
        )
        .await
        .map_err(|error| {
            match3d_error_response(
                &request_context,
                MATCH3D_WORKS_PROVIDER,
                map_match3d_client_error(error),
            )
        })?;

    Ok(json_success_body(
        Some(&request_context),
        Match3DWorkMutationResponse {
            item: map_match3d_work_profile_response(item),
        },
    ))
}

pub async fn delete_match3d_work(
    State(state): State<AppState>,
    Path(profile_id): Path<String>,
    Extension(request_context): Extension<RequestContext>,
    Extension(authenticated): Extension<AuthenticatedAccessToken>,
) -> Result<Json<Value>, Response> {
    ensure_non_empty(
        &request_context,
        MATCH3D_WORKS_PROVIDER,
        &profile_id,
        "profileId",
    )?;

    let items = state
        .spacetime_client()
        .delete_match3d_work(profile_id, authenticated.claims().user_id().to_string())
        .await
        .map_err(|error| {
            match3d_error_response(
                &request_context,
                MATCH3D_WORKS_PROVIDER,
                map_match3d_client_error(error),
            )
        })?;

    Ok(json_success_body(
        Some(&request_context),
        Match3DWorksResponse {
            items: items
                .into_iter()
                .map(map_match3d_work_summary_response)
                .collect(),
        },
    ))
}

pub async fn start_match3d_run(
    State(state): State<AppState>,
    Path(profile_id): Path<String>,
    Extension(request_context): Extension<RequestContext>,
    Extension(authenticated): Extension<AuthenticatedAccessToken>,
    payload: Result<Json<StartMatch3DRunRequest>, JsonRejection>,
) -> Result<Json<Value>, Response> {
    let maybe_payload = payload.ok().map(|Json(payload)| payload);
    let profile_id = maybe_payload
        .as_ref()
        .map(|payload| payload.profile_id.clone())
        .filter(|value| !value.trim().is_empty())
        .unwrap_or(profile_id);
    ensure_non_empty(
        &request_context,
        MATCH3D_RUNTIME_PROVIDER,
        &profile_id,
        "profileId",
    )?;

    let run = state
        .spacetime_client()
        .start_match3d_run(Match3DRunStartRecordInput {
            run_id: build_prefixed_uuid_id(MATCH3D_RUN_ID_PREFIX),
            owner_user_id: authenticated.claims().user_id().to_string(),
            profile_id: profile_id.clone(),
            started_at_ms: current_utc_ms(),
            item_type_count_override: maybe_payload
                .as_ref()
                .and_then(|payload| payload.item_type_count_override)
                .unwrap_or(0),
        })
        .await
        .map_err(|error| {
            match3d_error_response(
                &request_context,
                MATCH3D_RUNTIME_PROVIDER,
                map_match3d_client_error(error),
            )
        })?;

    record_work_play_start_after_success(
        &state,
        &request_context,
        WorkPlayTrackingDraft::new(
            "match3d",
            profile_id.clone(),
            &authenticated,
            "/api/runtime/match3d/...",
        )
        .profile_id(profile_id.clone())
        .extra(json!({
            "runId": run.run_id,
        })),
    )
    .await;

    Ok(json_success_body(
        Some(&request_context),
        Match3DRunResponse {
            run: map_match3d_run_response(run),
        },
    ))
}

pub async fn get_match3d_run(
    State(state): State<AppState>,
    Path(run_id): Path<String>,
    Extension(request_context): Extension<RequestContext>,
    Extension(authenticated): Extension<AuthenticatedAccessToken>,
) -> Result<Json<Value>, Response> {
    ensure_non_empty(&request_context, MATCH3D_RUNTIME_PROVIDER, &run_id, "runId")?;

    let run = state
        .spacetime_client()
        .get_match3d_run(run_id, authenticated.claims().user_id().to_string())
        .await
        .map_err(|error| {
            match3d_error_response(
                &request_context,
                MATCH3D_RUNTIME_PROVIDER,
                map_match3d_client_error(error),
            )
        })?;

    Ok(json_success_body(
        Some(&request_context),
        Match3DRunResponse {
            run: map_match3d_run_response(run),
        },
    ))
}

pub async fn click_match3d_item(
    State(state): State<AppState>,
    Path(run_id): Path<String>,
    Extension(request_context): Extension<RequestContext>,
    Extension(authenticated): Extension<AuthenticatedAccessToken>,
    payload: Result<Json<ClickMatch3DItemRequest>, JsonRejection>,
) -> Result<Json<Value>, Response> {
    let Json(payload) = match3d_json(payload, &request_context, MATCH3D_RUNTIME_PROVIDER)?;
    ensure_non_empty(&request_context, MATCH3D_RUNTIME_PROVIDER, &run_id, "runId")?;
    ensure_non_empty(
        &request_context,
        MATCH3D_RUNTIME_PROVIDER,
        &payload.item_instance_id,
        "itemInstanceId",
    )?;
    ensure_non_empty(
        &request_context,
        MATCH3D_RUNTIME_PROVIDER,
        &payload.client_event_id,
        "clientEventId",
    )?;

    let confirmation = state
        .spacetime_client()
        .click_match3d_item(Match3DRunClickRecordInput {
            run_id: payload.run_id.unwrap_or(run_id),
            owner_user_id: authenticated.claims().user_id().to_string(),
            item_instance_id: payload.item_instance_id,
            client_snapshot_version: payload.client_snapshot_version.min(u32::MAX as u64) as u32,
            client_event_id: payload.client_event_id,
            clicked_at_ms: payload.clicked_at_ms.min(i64::MAX as u64) as i64,
        })
        .await
        .map_err(|error| {
            match3d_error_response(
                &request_context,
                MATCH3D_RUNTIME_PROVIDER,
                map_match3d_client_error(error),
            )
        })?;

    Ok(json_success_body(
        Some(&request_context),
        Match3DClickResponse {
            confirmation: map_match3d_click_confirmation_response(confirmation),
        },
    ))
}

pub async fn stop_match3d_run(
    State(state): State<AppState>,
    Path(run_id): Path<String>,
    Extension(request_context): Extension<RequestContext>,
    Extension(authenticated): Extension<AuthenticatedAccessToken>,
    payload: Result<Json<StopMatch3DRunRequest>, JsonRejection>,
) -> Result<Json<Value>, Response> {
    let _ = payload.ok();
    ensure_non_empty(&request_context, MATCH3D_RUNTIME_PROVIDER, &run_id, "runId")?;

    let run = state
        .spacetime_client()
        .stop_match3d_run(Match3DRunStopRecordInput {
            run_id,
            owner_user_id: authenticated.claims().user_id().to_string(),
            stopped_at_ms: current_utc_ms(),
        })
        .await
        .map_err(|error| {
            match3d_error_response(
                &request_context,
                MATCH3D_RUNTIME_PROVIDER,
                map_match3d_client_error(error),
            )
        })?;

    Ok(json_success_body(
        Some(&request_context),
        Match3DRunResponse {
            run: map_match3d_run_response(run),
        },
    ))
}

pub async fn restart_match3d_run(
    State(state): State<AppState>,
    Path(run_id): Path<String>,
    Extension(request_context): Extension<RequestContext>,
    Extension(authenticated): Extension<AuthenticatedAccessToken>,
) -> Result<Json<Value>, Response> {
    ensure_non_empty(&request_context, MATCH3D_RUNTIME_PROVIDER, &run_id, "runId")?;

    let run = state
        .spacetime_client()
        .restart_match3d_run(Match3DRunRestartRecordInput {
            source_run_id: run_id,
            next_run_id: build_prefixed_uuid_id(MATCH3D_RUN_ID_PREFIX),
            owner_user_id: authenticated.claims().user_id().to_string(),
            restarted_at_ms: current_utc_ms(),
        })
        .await
        .map_err(|error| {
            match3d_error_response(
                &request_context,
                MATCH3D_RUNTIME_PROVIDER,
                map_match3d_client_error(error),
            )
        })?;

    Ok(json_success_body(
        Some(&request_context),
        Match3DRunResponse {
            run: map_match3d_run_response(run),
        },
    ))
}

pub async fn finish_match3d_time_up(
    State(state): State<AppState>,
    Path(run_id): Path<String>,
    Extension(request_context): Extension<RequestContext>,
    Extension(authenticated): Extension<AuthenticatedAccessToken>,
) -> Result<Json<Value>, Response> {
    ensure_non_empty(&request_context, MATCH3D_RUNTIME_PROVIDER, &run_id, "runId")?;

    let run = state
        .spacetime_client()
        .finish_match3d_time_up(Match3DRunTimeUpRecordInput {
            run_id,
            owner_user_id: authenticated.claims().user_id().to_string(),
            finished_at_ms: current_utc_ms(),
        })
        .await
        .map_err(|error| {
            match3d_error_response(
                &request_context,
                MATCH3D_RUNTIME_PROVIDER,
                map_match3d_client_error(error),
            )
        })?;

    Ok(json_success_body(
        Some(&request_context),
        Match3DRunResponse {
            run: map_match3d_run_response(run),
        },
    ))
}

async fn submit_and_finalize_match3d_message(
    state: &AppState,
    request_context: &RequestContext,
    owner_user_id: &str,
    session_id: String,
    payload: SendMatch3DAgentMessageRequest,
) -> Result<Match3DAgentSessionRecord, Response> {
    ensure_non_empty(
        request_context,
        MATCH3D_AGENT_PROVIDER,
        &session_id,
        "sessionId",
    )?;
    ensure_non_empty(
        request_context,
        MATCH3D_AGENT_PROVIDER,
        &payload.client_message_id,
        "clientMessageId",
    )?;
    ensure_non_empty(
        request_context,
        MATCH3D_AGENT_PROVIDER,
        &payload.text,
        "text",
    )?;

    let submitted = state
        .spacetime_client()
        .submit_match3d_agent_message(Match3DAgentMessageSubmitRecordInput {
            session_id: session_id.clone(),
            owner_user_id: owner_user_id.to_string(),
            user_message_id: payload.client_message_id.clone(),
            user_message_text: payload.text.clone(),
            submitted_at_micros: current_utc_micros(),
        })
        .await
        .map_err(|error| {
            match3d_error_response(
                request_context,
                MATCH3D_AGENT_PROVIDER,
                map_match3d_client_error(error),
            )
        })?;
    let next_turn = submitted.current_turn.saturating_add(1);
    let next_config = build_config_from_message(&submitted, &payload);
    let assistant_reply = build_match3d_assistant_reply_for_turn(&next_config, next_turn);
    let progress_percent = resolve_progress_percent_for_turn(next_turn);
    let stage = if progress_percent >= 100 {
        "ReadyToCompile"
    } else {
        "Collecting"
    }
    .to_string();

    state
        .spacetime_client()
        .finalize_match3d_agent_message(Match3DAgentMessageFinalizeRecordInput {
            session_id,
            owner_user_id: owner_user_id.to_string(),
            assistant_message_id: Some(build_prefixed_uuid_id(MATCH3D_MESSAGE_ID_PREFIX)),
            assistant_reply_text: Some(assistant_reply),
            config_json: serialize_match3d_config(&next_config),
            progress_percent,
            stage,
            updated_at_micros: current_utc_micros(),
            error_message: None,
        })
        .await
        .map_err(|error| {
            match3d_error_response(
                request_context,
                MATCH3D_AGENT_PROVIDER,
                map_match3d_client_error(error),
            )
        })
}

async fn compile_match3d_draft_for_session(
    state: &AppState,
    request_context: &RequestContext,
    authenticated: &AuthenticatedAccessToken,
    session_id: String,
    game_name: Option<String>,
    summary: Option<String>,
    tags: Option<Vec<String>>,
    cover_image_src: Option<String>,
    generate_click_sound: Option<bool>,
) -> Result<(Match3DAgentSessionRecord, Vec<Match3DGeneratedItemAsset>), Response> {
    let owner_user_id = authenticated.claims().user_id().to_string();
    let initial_session = state
        .spacetime_client()
        .get_match3d_agent_session(session_id.clone(), owner_user_id.clone())
        .await
        .map_err(|error| {
            match3d_error_response(
                request_context,
                MATCH3D_AGENT_PROVIDER,
                map_match3d_client_error(error),
            )
        })?;
    let mut config = resolve_config_or_default(initial_session.config.as_ref());
    if let Some(generate_click_sound) = generate_click_sound {
        config.generate_click_sound = generate_click_sound;
    }
    // 中文注释：抓大鹅入口已支持表单直创；完整表单创建的 session
    // 不需要再伪造三轮聊天，只要配置字段完整即可进入草稿编译。
    let has_complete_form_config = !config.theme_text.trim().is_empty()
        && config.clear_count > 0
        && (1..=10).contains(&config.difficulty);
    if !has_complete_form_config
        && (initial_session.current_turn < 3 || initial_session.progress_percent < 100)
    {
        return Err(match3d_bad_request(
            request_context,
            MATCH3D_AGENT_PROVIDER,
            "match3d 创作配置尚未确认完成",
        ));
    }

    let requested_game_name = normalize_optional_match3d_text(game_name);
    let requested_summary =
        normalize_optional_match3d_text(summary).or_else(|| Some(String::new()));
    let requested_tags = tags.map(normalize_tags).filter(|items| !items.is_empty());
    let fallback_work_metadata = fallback_match3d_work_metadata(config.theme_text.as_str());
    let profile_id = resolve_match3d_draft_profile_id(&initial_session);
    let initial_game_name = requested_game_name
        .clone()
        .unwrap_or_else(|| fallback_work_metadata.game_name.clone());
    let initial_tags = requested_tags
        .clone()
        .unwrap_or_else(|| fallback_work_metadata.tags.clone());
    let mut session = upsert_match3d_draft_snapshot(
        state,
        request_context,
        authenticated,
        session_id.clone(),
        owner_user_id.clone(),
        profile_id.clone(),
        Some(initial_game_name),
        requested_summary.clone(),
        Some(serde_json::to_string(&initial_tags).unwrap_or_default()),
        cover_image_src.clone(),
        None,
        None,
    )
    .await?;

    if session.draft.is_none() {
        return Err(match3d_error_response(
            request_context,
            MATCH3D_AGENT_PROVIDER,
            match3d_bad_gateway("抓大鹅草稿创建失败，请稍后重试"),
        ));
    }

    let generated_work_metadata = generate_match3d_draft_plan(state, &config).await;
    let resolved_game_name =
        requested_game_name.unwrap_or_else(|| generated_work_metadata.metadata.game_name.clone());
    let resolved_tags = requested_tags.unwrap_or_else(|| generated_work_metadata.metadata.tags.clone());
    session = upsert_match3d_draft_snapshot(
        state,
        request_context,
        authenticated,
        session_id,
        owner_user_id.clone(),
        profile_id.clone(),
        Some(resolved_game_name),
        requested_summary,
        Some(serde_json::to_string(&resolved_tags).unwrap_or_default()),
        cover_image_src,
        None,
        None,
    )
    .await?;

    let existing_assets = get_match3d_existing_generated_item_assets(
        state,
        owner_user_id.as_str(),
        profile_id.as_str(),
    )
    .await;
    let generated_item_assets = generate_match3d_item_assets(
        state,
        request_context,
        authenticated,
        owner_user_id.as_str(),
        session.session_id.as_str(),
        profile_id.as_str(),
        &config,
        generated_work_metadata.items,
        generated_work_metadata.background_music,
        existing_assets,
    )
    .await?;
    let generated_item_assets = ensure_match3d_background_asset(
        state,
        request_context,
        authenticated,
        owner_user_id.as_str(),
        session.session_id.as_str(),
        profile_id.as_str(),
        &config,
        generated_work_metadata.background_prompt.as_str(),
        generated_item_assets,
    )
    .await?;
    session = upsert_match3d_draft_snapshot(
        state,
        request_context,
        authenticated,
        session.session_id.clone(),
        owner_user_id.clone(),
        profile_id,
        None,
        None,
        None,
        None,
        None,
        serialize_match3d_generated_item_assets(&generated_item_assets),
    )
    .await?;

    Ok((session, generated_item_assets))
}

fn resolve_match3d_draft_profile_id(session: &Match3DAgentSessionRecord) -> String {
    session
        .draft
        .as_ref()
        .map(|draft| draft.profile_id.trim())
        .filter(|profile_id| !profile_id.is_empty())
        .or_else(|| {
            session
                .published_profile_id
                .as_deref()
                .map(str::trim)
                .filter(|profile_id| !profile_id.is_empty())
        })
        .map(str::to_string)
        .unwrap_or_else(|| build_prefixed_uuid_id(MATCH3D_PROFILE_ID_PREFIX))
}

#[allow(clippy::too_many_arguments)]
async fn upsert_match3d_draft_snapshot(
    state: &AppState,
    request_context: &RequestContext,
    authenticated: &AuthenticatedAccessToken,
    session_id: String,
    owner_user_id: String,
    profile_id: String,
    game_name: Option<String>,
    summary_text: Option<String>,
    tags_json: Option<String>,
    cover_image_src: Option<String>,
    cover_asset_id: Option<String>,
    generated_item_assets_json: Option<String>,
) -> Result<Match3DAgentSessionRecord, Response> {
    state
        .spacetime_client()
        .compile_match3d_draft(Match3DCompileDraftRecordInput {
            session_id,
            owner_user_id,
            profile_id,
            author_display_name: resolve_author_display_name(state, authenticated),
            game_name,
            summary_text,
            tags_json,
            cover_image_src,
            cover_asset_id,
            compiled_at_micros: current_utc_micros(),
            generated_item_assets_json,
        })
        .await
        .map_err(|error| {
            match3d_error_response(
                request_context,
                MATCH3D_AGENT_PROVIDER,
                map_match3d_client_error(error),
            )
        })
}

async fn get_match3d_existing_generated_item_assets(
    state: &AppState,
    owner_user_id: &str,
    profile_id: &str,
) -> Vec<Match3DGeneratedItemAsset> {
    match state
        .spacetime_client()
        .get_match3d_work_detail(profile_id.to_string(), owner_user_id.to_string())
        .await
    {
        Ok(profile) => {
            parse_match3d_generated_item_assets(profile.generated_item_assets_json.as_deref())
                .into_iter()
                .map(Match3DGeneratedItemAsset::from)
                .collect()
        }
        Err(error) => {
            tracing::debug!(
                provider = MATCH3D_AGENT_PROVIDER,
                profile_id,
                error = %error,
                "读取抓大鹅已有素材失败，按空素材继续生成"
            );
            Vec::new()
        }
    }
}

async fn load_match3d_work_asset_context(
    state: &AppState,
    request_context: &RequestContext,
    authenticated: &AuthenticatedAccessToken,
    profile_id: &str,
) -> Result<Match3DWorkAssetContext, Response> {
    let owner_user_id = authenticated.claims().user_id().to_string();
    let profile = state
        .spacetime_client()
        .get_match3d_work_detail(profile_id.to_string(), owner_user_id.clone())
        .await
        .map_err(|error| {
            match3d_error_response(
                request_context,
                MATCH3D_WORKS_PROVIDER,
                map_match3d_client_error(error),
            )
        })?;
    let session_id = profile.source_session_id.clone().ok_or_else(|| {
        match3d_error_response(
            request_context,
            MATCH3D_WORKS_PROVIDER,
            AppError::from_status(StatusCode::BAD_REQUEST).with_details(json!({
                "provider": MATCH3D_WORKS_PROVIDER,
                "message": "抓大鹅作品缺少来源 session，无法生成素材",
            })),
        )
    })?;
    let config = match state
        .spacetime_client()
        .get_match3d_agent_session(session_id.clone(), owner_user_id.clone())
        .await
    {
        Ok(session) => {
            let mut config = resolve_config_or_default(session.config.as_ref());
            if config.theme_text.trim().is_empty() {
                config.theme_text = profile.theme_text.clone();
            }
            config
        }
        Err(error) => {
            tracing::debug!(
                provider = MATCH3D_WORKS_PROVIDER,
                profile_id,
                session_id = session_id.as_str(),
                error = %error,
                "读取抓大鹅 session 配置失败，使用作品 profile 派生素材配置"
            );
            Match3DConfigJson {
                theme_text: profile.theme_text.clone(),
                reference_image_src: profile.reference_image_src.clone(),
                clear_count: profile.clear_count,
                difficulty: profile.difficulty,
                asset_style_id: None,
                asset_style_label: None,
                asset_style_prompt: None,
                generate_click_sound: false,
            }
        }
    };
    let assets = parse_match3d_generated_item_assets(profile.generated_item_assets_json.as_deref())
        .into_iter()
        .map(Match3DGeneratedItemAsset::from)
        .collect::<Vec<_>>();
    Ok(Match3DWorkAssetContext {
        owner_user_id,
        session_id,
        profile,
        config,
        assets,
    })
}

#[allow(clippy::too_many_arguments)]
async fn persist_match3d_generated_item_assets_snapshot(
    state: &AppState,
    request_context: &RequestContext,
    authenticated: &AuthenticatedAccessToken,
    session_id: &str,
    owner_user_id: &str,
    profile_id: &str,
    assets: &[Match3DGeneratedItemAsset],
) -> Result<(), Response> {
    upsert_match3d_draft_snapshot(
        state,
        request_context,
        authenticated,
        session_id.to_string(),
        owner_user_id.to_string(),
        profile_id.to_string(),
        None,
        None,
        None,
        None,
        None,
        serialize_match3d_generated_item_assets(assets),
    )
    .await
    .map(|_| ())
}

fn map_match3d_agent_session_response(
    session: Match3DAgentSessionRecord,
) -> Match3DAgentSessionSnapshotResponse {
    Match3DAgentSessionSnapshotResponse {
        session_id: session.session_id,
        current_turn: session.current_turn,
        progress_percent: session.progress_percent,
        stage: session.stage.clone(),
        anchor_pack: map_match3d_anchor_pack_response_for_turn(
            session.anchor_pack,
            session.current_turn,
            session.stage.as_str(),
        ),
        config: session.config.map(map_match3d_config_response),
        draft: session.draft.map(map_match3d_draft_response),
        messages: session
            .messages
            .into_iter()
            .map(map_match3d_message_response)
            .collect(),
        last_assistant_reply: session.last_assistant_reply,
        published_profile_id: session.published_profile_id,
        updated_at: session.updated_at,
    }
}

fn map_match3d_agent_session_response_with_assets(
    session: Match3DAgentSessionRecord,
    generated_item_assets: &[Match3DGeneratedItemAsset],
) -> Match3DAgentSessionSnapshotResponse {
    let mut response = map_match3d_agent_session_response(session);
    if let Some(draft) = response.draft.as_mut() {
        draft.generated_item_assets = generated_item_assets
            .iter()
            .cloned()
            .map(map_match3d_generated_item_asset_for_agent)
            .collect();
        let background_asset = find_match3d_generated_background_asset(generated_item_assets);
        apply_match3d_background_asset_to_agent_draft(draft, background_asset);
    }
    response
}

fn map_match3d_anchor_pack_response_for_turn(
    anchor: Match3DAnchorPackRecord,
    current_turn: u32,
    stage: &str,
) -> Match3DAnchorPackResponse {
    let is_ready = matches!(
        stage,
        "ReadyToCompile"
            | "ready_to_compile"
            | "DraftCompiled"
            | "draft_compiled"
            | "draft_ready"
            | "ReadyToPublish"
            | "ready_to_publish"
            | "Published"
            | "published"
    );
    let collected_count = if is_ready { 3 } else { current_turn.min(3) };

    Match3DAnchorPackResponse {
        theme: map_match3d_anchor_item_response_for_collected(anchor.theme, collected_count >= 1),
        clear_count: map_match3d_anchor_item_response_for_collected(
            anchor.clear_count,
            collected_count >= 2,
        ),
        difficulty: map_match3d_anchor_item_response_for_collected(
            anchor.difficulty,
            collected_count >= 3,
        ),
    }
}

fn map_match3d_anchor_item_response(anchor: Match3DAnchorItemRecord) -> Match3DAnchorItemResponse {
    Match3DAnchorItemResponse {
        key: anchor.key,
        label: anchor.label,
        value: anchor.value,
        status: anchor.status,
    }
}

fn map_match3d_anchor_item_response_for_collected(
    anchor: Match3DAnchorItemRecord,
    collected: bool,
) -> Match3DAnchorItemResponse {
    if collected {
        return map_match3d_anchor_item_response(anchor);
    }

    Match3DAnchorItemResponse {
        key: anchor.key,
        label: anchor.label,
        value: String::new(),
        status: "missing".to_string(),
    }
}

fn map_match3d_config_response(config: Match3DCreatorConfigRecord) -> Match3DCreatorConfigResponse {
    Match3DCreatorConfigResponse {
        theme_text: config.theme_text,
        reference_image_src: config.reference_image_src,
        clear_count: config.clear_count,
        difficulty: config.difficulty,
        asset_style_id: config.asset_style_id,
        asset_style_label: config.asset_style_label,
        asset_style_prompt: config.asset_style_prompt,
        generate_click_sound: config.generate_click_sound,
    }
}

fn map_match3d_draft_response(draft: Match3DResultDraftRecord) -> Match3DResultDraftResponse {
    Match3DResultDraftResponse {
        profile_id: draft.profile_id,
        game_name: draft.game_name,
        theme_text: draft.theme_text,
        summary_text: Some(draft.summary_text.clone()),
        summary: draft.summary_text,
        tags: draft.tags,
        cover_image_src: draft.cover_image_src,
        reference_image_src: draft.reference_image_src,
        clear_count: draft.clear_count,
        difficulty: draft.difficulty,
        total_item_count: draft.total_item_count,
        publish_ready: draft.publish_ready,
        blockers: draft.blockers,
        background_prompt: None,
        background_image_src: None,
        background_image_object_key: None,
        generated_background_asset: None,
        generated_item_assets: Vec::new(),
    }
}

fn map_match3d_generated_item_asset_for_agent(
    asset: Match3DGeneratedItemAsset,
) -> Match3DAgentGeneratedItemAssetResponse {
    Match3DAgentGeneratedItemAssetResponse {
        item_id: asset.item_id,
        item_name: asset.item_name,
        image_src: asset.image_src,
        image_object_key: asset.image_object_key,
        image_views: asset
            .image_views
            .into_iter()
            .map(map_match3d_image_view_for_agent)
            .collect(),
        model_src: asset.model_src,
        model_object_key: asset.model_object_key,
        model_file_name: asset.model_file_name,
        task_uuid: asset.task_uuid,
        subscription_key: asset.subscription_key,
        sound_prompt: asset.sound_prompt,
        background_music_title: asset.background_music_title,
        background_music_style: asset.background_music_style,
        background_music_prompt: asset.background_music_prompt,
        background_music: asset.background_music,
        click_sound: asset.click_sound,
        background_asset: asset
            .background_asset
            .map(map_match3d_background_asset_for_agent),
        status: asset.status,
        error: asset.error,
    }
}

fn map_match3d_generated_item_asset_for_work(
    asset: Match3DGeneratedItemAssetJson,
) -> shared_contracts::match3d_works::Match3DGeneratedItemAssetResponse {
    shared_contracts::match3d_works::Match3DGeneratedItemAssetResponse {
        item_id: asset.item_id,
        item_name: asset.item_name,
        image_src: asset.image_src,
        image_object_key: asset.image_object_key,
        image_views: asset
            .image_views
            .into_iter()
            .map(map_match3d_image_view_for_work)
            .collect(),
        model_src: asset.model_src,
        model_object_key: asset.model_object_key,
        model_file_name: asset.model_file_name,
        task_uuid: asset.task_uuid,
        subscription_key: asset.subscription_key,
        sound_prompt: asset.sound_prompt,
        background_music_title: asset.background_music_title,
        background_music_style: asset.background_music_style,
        background_music_prompt: asset.background_music_prompt,
        background_music: asset.background_music,
        click_sound: asset.click_sound,
        background_asset: asset
            .background_asset
            .map(map_match3d_background_asset_for_work),
        status: asset.status,
        error: asset.error,
    }
}

fn map_match3d_image_view_for_agent(
    view: Match3DGeneratedItemImageView,
) -> shared_contracts::match3d_agent::Match3DGeneratedItemImageViewResponse {
    shared_contracts::match3d_agent::Match3DGeneratedItemImageViewResponse {
        view_id: view.view_id,
        view_index: view.view_index,
        image_src: view.image_src,
        image_object_key: view.image_object_key,
    }
}

fn map_match3d_image_view_for_work(
    view: Match3DGeneratedItemImageView,
) -> shared_contracts::match3d_works::Match3DGeneratedItemImageViewResponse {
    shared_contracts::match3d_works::Match3DGeneratedItemImageViewResponse {
        view_id: view.view_id,
        view_index: view.view_index,
        image_src: view.image_src,
        image_object_key: view.image_object_key,
    }
}

fn map_match3d_image_view_from_work(
    view: shared_contracts::match3d_works::Match3DGeneratedItemImageViewResponse,
) -> Match3DGeneratedItemImageView {
    Match3DGeneratedItemImageView {
        view_id: view.view_id,
        view_index: view.view_index,
        image_src: view.image_src,
        image_object_key: view.image_object_key,
    }
}

fn map_match3d_background_asset_for_agent(
    asset: Match3DGeneratedBackgroundAsset,
) -> shared_contracts::match3d_agent::Match3DGeneratedBackgroundAssetResponse {
    shared_contracts::match3d_agent::Match3DGeneratedBackgroundAssetResponse {
        prompt: asset.prompt,
        image_src: asset.image_src,
        image_object_key: asset.image_object_key,
        status: asset.status,
        error: asset.error,
    }
}

fn map_match3d_background_asset_for_work(
    asset: Match3DGeneratedBackgroundAsset,
) -> shared_contracts::match3d_works::Match3DGeneratedBackgroundAssetResponse {
    shared_contracts::match3d_works::Match3DGeneratedBackgroundAssetResponse {
        prompt: asset.prompt,
        image_src: asset.image_src,
        image_object_key: asset.image_object_key,
        status: asset.status,
        error: asset.error,
    }
}

fn find_match3d_generated_background_asset(
    assets: &[Match3DGeneratedItemAsset],
) -> Option<Match3DGeneratedBackgroundAsset> {
    assets
        .iter()
        .find_map(|asset| asset.background_asset.clone())
}

fn find_match3d_generated_background_asset_json(
    assets: &[Match3DGeneratedItemAssetJson],
) -> Option<Match3DGeneratedBackgroundAsset> {
    assets
        .iter()
        .find_map(|asset| asset.background_asset.clone())
}

fn apply_match3d_background_asset_to_agent_draft(
    draft: &mut Match3DResultDraftResponse,
    background_asset: Option<Match3DGeneratedBackgroundAsset>,
) {
    if let Some(asset) = background_asset {
        draft.background_prompt = Some(asset.prompt.clone());
        draft.background_image_src = asset.image_src.clone();
        draft.background_image_object_key = asset.image_object_key.clone();
        draft.generated_background_asset = Some(map_match3d_background_asset_for_agent(asset));
    }
}

fn map_match3d_message_response(message: Match3DAgentMessageRecord) -> Match3DAgentMessageResponse {
    Match3DAgentMessageResponse {
        id: message.message_id,
        role: message.role,
        kind: message.kind,
        text: message.text,
        created_at: message.created_at,
    }
}

fn map_match3d_work_summary_response(item: Match3DWorkProfileRecord) -> Match3DWorkSummaryResponse {
    let generated_item_asset_json =
        parse_match3d_generated_item_assets(item.generated_item_assets_json.as_deref());
    let background_asset = find_match3d_generated_background_asset_json(&generated_item_asset_json);
    let generated_background_asset = background_asset
        .clone()
        .map(map_match3d_background_asset_for_work);
    let generated_item_assets = generated_item_asset_json
        .into_iter()
        .map(map_match3d_generated_item_asset_for_work)
        .collect();
    Match3DWorkSummaryResponse {
        work_id: item.work_id,
        profile_id: item.profile_id,
        owner_user_id: item.owner_user_id,
        source_session_id: item.source_session_id,
        game_name: item.game_name,
        theme_text: item.theme_text,
        summary: item.summary,
        tags: item.tags,
        cover_image_src: item.cover_image_src,
        reference_image_src: item.reference_image_src,
        clear_count: item.clear_count,
        difficulty: item.difficulty,
        publication_status: item.publication_status,
        play_count: item.play_count,
        updated_at: item.updated_at,
        published_at: item.published_at,
        publish_ready: item.publish_ready,
        background_prompt: background_asset.as_ref().map(|asset| asset.prompt.clone()),
        background_image_src: background_asset
            .as_ref()
            .and_then(|asset| asset.image_src.clone()),
        background_image_object_key: background_asset
            .as_ref()
            .and_then(|asset| asset.image_object_key.clone()),
        generated_background_asset,
        generated_item_assets,
    }
}

fn match3d_bad_gateway(message: impl Into<String>) -> AppError {
    AppError::from_status(StatusCode::BAD_GATEWAY).with_details(json!({
        "provider": MATCH3D_AGENT_PROVIDER,
        "message": message.into(),
    }))
}

fn map_match3d_work_profile_response(item: Match3DWorkProfileRecord) -> Match3DWorkProfileResponse {
    Match3DWorkProfileResponse {
        summary: map_match3d_work_summary_response(item),
    }
}

fn map_match3d_run_response(run: Match3DRunRecord) -> Match3DRunSnapshotResponse {
    Match3DRunSnapshotResponse {
        run_id: run.run_id,
        profile_id: run.profile_id,
        owner_user_id: run.owner_user_id,
        status: normalize_match3d_run_status(run.status.as_str()).to_string(),
        snapshot_version: run.snapshot_version,
        started_at_ms: run.started_at_ms,
        duration_limit_ms: run.duration_limit_ms,
        server_now_ms: run.server_now_ms,
        remaining_ms: run.remaining_ms,
        clear_count: run.clear_count,
        total_item_count: run.total_item_count,
        cleared_item_count: run.cleared_item_count,
        items: run
            .items
            .into_iter()
            .map(map_match3d_item_response)
            .collect(),
        tray_slots: run
            .tray_slots
            .into_iter()
            .map(map_match3d_tray_slot_response)
            .collect(),
        failure_reason: run
            .failure_reason
            .map(|reason| normalize_match3d_failure_reason(reason.as_str()).to_string()),
        last_confirmed_action_id: run.last_confirmed_action_id,
    }
}

fn map_match3d_item_response(item: Match3DItemSnapshotRecord) -> Match3DItemSnapshotResponse {
    Match3DItemSnapshotResponse {
        item_instance_id: item.item_instance_id,
        item_type_id: item.item_type_id,
        visual_key: item.visual_key,
        x: item.x,
        y: item.y,
        radius: item.radius,
        layer: item.layer,
        state: normalize_match3d_item_state(item.state.as_str()).to_string(),
        clickable: item.clickable,
        tray_slot_index: item.tray_slot_index,
    }
}

fn map_match3d_tray_slot_response(slot: Match3DTraySlotRecord) -> Match3DTraySlotResponse {
    Match3DTraySlotResponse {
        slot_index: slot.slot_index,
        item_instance_id: slot.item_instance_id,
        item_type_id: slot.item_type_id,
        visual_key: slot.visual_key,
    }
}

fn map_match3d_click_confirmation_response(
    confirmation: Match3DClickConfirmationRecord,
) -> Match3DClickConfirmationResponse {
    Match3DClickConfirmationResponse {
        accepted: confirmation.accepted,
        reject_reason: confirmation
            .reject_reason
            .map(|reason| normalize_match3d_click_reject_reason(reason.as_str()).to_string()),
        entered_slot_index: confirmation.entered_slot_index,
        cleared_item_instance_ids: confirmation.cleared_item_instance_ids,
        run: map_match3d_run_response(confirmation.run),
    }
}

fn build_config_from_create_request(
    payload: &CreateMatch3DAgentSessionRequest,
) -> Match3DConfigJson {
    Match3DConfigJson {
        theme_text: payload
            .theme_text
            .as_deref()
            .or(payload.seed_text.as_deref())
            .map(str::trim)
            .filter(|value| !value.is_empty())
            .unwrap_or(MATCH3D_DEFAULT_THEME)
            .to_string(),
        reference_image_src: payload.reference_image_src.clone(),
        clear_count: payload.clear_count.unwrap_or(MATCH3D_DEFAULT_CLEAR_COUNT),
        difficulty: payload
            .difficulty
            .unwrap_or(MATCH3D_DEFAULT_DIFFICULTY)
            .clamp(1, 10),
        asset_style_id: normalize_optional_text(payload.asset_style_id.as_deref()),
        asset_style_label: normalize_optional_text(payload.asset_style_label.as_deref()),
        asset_style_prompt: normalize_optional_text(payload.asset_style_prompt.as_deref()),
        generate_click_sound: payload.generate_click_sound.unwrap_or(false),
    }
}

fn build_config_from_message(
    session: &Match3DAgentSessionRecord,
    payload: &SendMatch3DAgentMessageRequest,
) -> Match3DConfigJson {
    let current = resolve_config_or_default(session.config.as_ref());
    let text = payload.text.trim();
    let reference_image_src = payload
        .reference_image_src
        .as_deref()
        .map(str::trim)
        .filter(|value| !value.is_empty())
        .map(str::to_string)
        .or(current.reference_image_src);
    let quick_fill_requested =
        payload.quick_fill_requested.unwrap_or(false) || text.contains("自动配置");

    let mut theme_text = current.theme_text;
    let mut clear_count = current.clear_count.max(1);
    let mut difficulty = current.difficulty.clamp(1, 10);
    let asset_style_id = current.asset_style_id;
    let asset_style_label = current.asset_style_label;
    let asset_style_prompt = current.asset_style_prompt;
    let generate_click_sound = current.generate_click_sound;

    match session.current_turn {
        0 => {
            theme_text = if quick_fill_requested {
                MATCH3D_DEFAULT_THEME.to_string()
            } else {
                parse_theme_answer(text).unwrap_or(theme_text)
            };
        }
        1 => {
            clear_count = if quick_fill_requested {
                clear_count
            } else {
                parse_number_after_keywords(text, &["消除", "次数", "clearCount"])
                    .unwrap_or(clear_count)
            }
            .max(1);
        }
        _ => {
            difficulty = if quick_fill_requested {
                difficulty
            } else {
                parse_number_after_keywords(text, &["难度", "difficulty"]).unwrap_or(difficulty)
            }
            .clamp(1, 10);
        }
    }

    Match3DConfigJson {
        theme_text,
        reference_image_src,
        clear_count,
        difficulty,
        asset_style_id,
        asset_style_label,
        asset_style_prompt,
        generate_click_sound,
    }
}

fn resolve_config_or_default(config: Option<&Match3DCreatorConfigRecord>) -> Match3DConfigJson {
    config
        .map(|config| Match3DConfigJson {
            theme_text: config.theme_text.clone(),
            reference_image_src: config.reference_image_src.clone(),
            clear_count: config.clear_count.max(1),
            difficulty: config.difficulty.clamp(1, 10),
            asset_style_id: config.asset_style_id.clone(),
            asset_style_label: config.asset_style_label.clone(),
            asset_style_prompt: config.asset_style_prompt.clone(),
            generate_click_sound: config.generate_click_sound,
        })
        .unwrap_or_else(|| Match3DConfigJson {
            theme_text: MATCH3D_DEFAULT_THEME.to_string(),
            reference_image_src: None,
            clear_count: MATCH3D_DEFAULT_CLEAR_COUNT,
            difficulty: MATCH3D_DEFAULT_DIFFICULTY,
            asset_style_id: None,
            asset_style_label: None,
            asset_style_prompt: None,
            generate_click_sound: false,
        })
}

fn normalize_optional_text(value: Option<&str>) -> Option<String> {
    value
        .map(str::trim)
        .filter(|value| !value.is_empty())
        .map(str::to_string)
}

fn serialize_match3d_config(config: &Match3DConfigJson) -> Option<String> {
    serde_json::to_string(config).ok()
}

fn build_seed_text(
    payload: &CreateMatch3DAgentSessionRequest,
    config: &Match3DConfigJson,
) -> String {
    payload
        .seed_text
        .as_deref()
        .map(str::trim)
        .filter(|value| !value.is_empty())
        .map(str::to_string)
        .unwrap_or_else(|| {
            format!(
                "{}题材，消除{}次，难度{}",
                config.theme_text, config.clear_count, config.difficulty
            )
        })
}

fn build_match3d_assistant_reply(config: &Match3DConfigJson) -> String {
    format!(
        "已确认：{}题材，需要消除 {} 次，共 {} 件物品，难度 {}。",
        config.theme_text,
        config.clear_count,
        config.clear_count.saturating_mul(3),
        config.difficulty
    )
}

fn build_match3d_assistant_reply_for_turn(config: &Match3DConfigJson, current_turn: u32) -> String {
    match current_turn {
        0 => MATCH3D_QUESTION_THEME.to_string(),
        1 => MATCH3D_QUESTION_CLEAR_COUNT.to_string(),
        2 => MATCH3D_QUESTION_DIFFICULTY.to_string(),
        _ => build_match3d_assistant_reply(config),
    }
}

fn resolve_progress_percent_for_turn(current_turn: u32) -> u32 {
    match current_turn {
        0 => 0,
        1 => 33,
        2 => 66,
        _ => 100,
    }
}

fn parse_theme_answer(text: &str) -> Option<String> {
    for marker in ["题材", "主题"] {
        if let Some((_, value)) = text.split_once(marker) {
            let normalized = value
                .trim_matches(|ch: char| ch == ':' || ch == '：' || ch.is_whitespace())
                .split_whitespace()
                .next()
                .unwrap_or_default()
                .trim_matches(['。', '，', ',', ';', '；'])
                .to_string();
            if !normalized.is_empty() {
                return Some(normalized);
            }
        }
    }
    let trimmed = text.trim();
    if (2..=24).contains(&trimmed.chars().count()) && !trimmed.chars().any(|ch| ch.is_ascii_digit())
    {
        return Some(trimmed.to_string());
    }
    None
}

fn parse_number_after_keywords(text: &str, keywords: &[&str]) -> Option<u32> {
    for keyword in keywords {
        if let Some(index) = text.find(keyword) {
            let suffix = &text[index + keyword.len()..];
            if let Some(value) = first_positive_integer(suffix) {
                return Some(value);
            }
        }
    }
    first_positive_integer(text)
}

fn first_positive_integer(text: &str) -> Option<u32> {
    let mut digits = String::new();
    for ch in text.chars() {
        if ch.is_ascii_digit() {
            digits.push(ch);
        } else if !digits.is_empty() {
            break;
        }
    }
    digits.parse::<u32>().ok().filter(|value| *value > 0)
}

fn normalize_tags(tags: Vec<String>) -> Vec<String> {
    let mut result: Vec<String> = Vec::new();
    for tag in tags {
        let trimmed = normalize_match3d_tag(tag.as_str());
        if !trimmed.is_empty() && !result.iter().any(|value| value == &trimmed) {
            result.push(trimmed);
        }
        if result.len() >= 6 {
            break;
        }
    }
    result
}

fn normalize_optional_match3d_text(value: Option<String>) -> Option<String> {
    value
        .map(|value| value.trim().to_string())
        .filter(|value| !value.is_empty())
}

fn normalize_match3d_tag(value: &str) -> String {
    let trimmed = value.trim();
    let without_number_prefix = trimmed
        .char_indices()
        .find_map(|(index, ch)| {
            if index == 0 || !matches!(ch, '.' | '、' | ')' | '）') {
                return None;
            }
            let prefix = &trimmed[..index];
            if prefix.chars().all(|candidate| candidate.is_ascii_digit()) {
                Some(trimmed[index + ch.len_utf8()..].trim_start())
            } else {
                None
            }
        })
        .unwrap_or(trimmed);

    without_number_prefix
        .trim_matches(|ch: char| {
            ch.is_ascii_punctuation()
                || matches!(
                    ch,
                    '，' | '。' | '、' | '；' | '：' | '！' | '？' | '“' | '”' | '《' | '》'
                )
        })
        .trim()
        .chars()
        .filter(|ch| !matches!(ch, '#' | '"' | '\'' | '`'))
        .collect::<String>()
        .chars()
        .take(6)
        .collect::<String>()
}

fn normalize_match3d_tag_candidates<S>(candidates: impl IntoIterator<Item = S>) -> Vec<String>
where
    S: AsRef<str>,
{
    let mut tags = Vec::new();
    for candidate in candidates {
        let normalized = normalize_match3d_tag(candidate.as_ref());
        if normalized.is_empty() || tags.iter().any(|tag| tag == &normalized) {
            continue;
        }
        tags.push(normalized);
        if tags.len() >= 6 {
            break;
        }
    }
    for fallback in ["抓大鹅", "经典消除", "2D素材", "轻量休闲", "收集", "挑战"] {
        if tags.len() >= 6 {
            break;
        }
        if !tags.iter().any(|tag| tag == fallback) {
            tags.push(fallback.to_string());
        }
    }
    tags
}

async fn generate_match3d_work_tags_for_profile(
    state: &AppState,
    game_name: &str,
    theme_text: &str,
) -> Vec<String> {
    let Some(llm_client) = state
        .creative_agent_gpt5_client()
        .or_else(|| state.llm_client())
    else {
        return fallback_match3d_work_tags(game_name, theme_text);
    };
    let user_prompt = format!(
        "题材设定：{}\n作品名称：{}\n请生成 3 到 6 个适合抓大鹅作品发布的中文短标签。要求：只返回 JSON 数组，每项 2 到 6 个汉字，不要解释。",
        theme_text, game_name
    );
    let response = llm_client
        .request_text(
            LlmTextRequest::new(vec![
                LlmMessage::system("你是抓大鹅作品标签编辑，只返回 JSON 字符串数组。"),
                LlmMessage::user(user_prompt),
            ])
            .with_model(MATCH3D_WORK_METADATA_LLM_MODEL)
            .with_responses_api(),
        )
        .await;

    match response {
        Ok(response) => {
            let tags = parse_match3d_tags_from_text(response.content.as_str());
            if tags.len() >= MATCH3D_MIN_GENERATED_TAG_COUNT {
                return tags;
            }
            fallback_match3d_work_tags(game_name, theme_text)
        }
        Err(error) => {
            tracing::warn!(
                provider = MATCH3D_WORKS_PROVIDER,
                game_name,
                error = %error,
                "抓大鹅 AI 标签生成失败，降级使用本地标签"
            );
            fallback_match3d_work_tags(game_name, theme_text)
        }
    }
}

const MATCH3D_MIN_GENERATED_TAG_COUNT: usize = 3;

fn parse_match3d_tags_from_text(raw: &str) -> Vec<String> {
    let raw = raw.trim();
    let json_text = if let Some(start) = raw.find('[')
        && let Some(end) = raw.rfind(']')
        && end > start
    {
        &raw[start..=end]
    } else {
        raw
    };
    let parsed = serde_json::from_str::<Vec<String>>(json_text).unwrap_or_default();
    normalize_match3d_tag_candidates(parsed)
}

fn fallback_match3d_work_tags(game_name: &str, theme_text: &str) -> Vec<String> {
    normalize_match3d_tag_candidates([theme_text, game_name, "抓大鹅", "经典消除", "2D素材"])
}

fn serialize_match3d_generated_item_assets(assets: &[Match3DGeneratedItemAsset]) -> Option<String> {
    if assets.is_empty() {
        return None;
    }
    let items = assets
        .iter()
        .cloned()
        .map(Match3DGeneratedItemAssetJson::from)
        .collect::<Vec<_>>();
    serde_json::to_string(&items).ok()
}

fn parse_match3d_generated_item_assets(value: Option<&str>) -> Vec<Match3DGeneratedItemAssetJson> {
    value
        .map(str::trim)
        .filter(|value| !value.is_empty())
        .and_then(|value| serde_json::from_str::<Vec<Match3DGeneratedItemAssetJson>>(value).ok())
        .unwrap_or_default()
}

impl From<Match3DGeneratedItemAsset> for Match3DGeneratedItemAssetJson {
    fn from(asset: Match3DGeneratedItemAsset) -> Self {
        Self {
            item_id: asset.item_id,
            item_name: asset.item_name,
            image_src: asset.image_src,
            image_object_key: asset.image_object_key,
            image_views: asset.image_views,
            model_src: asset.model_src,
            model_object_key: asset.model_object_key,
            model_file_name: asset.model_file_name,
            task_uuid: asset.task_uuid,
            subscription_key: asset.subscription_key,
            sound_prompt: asset.sound_prompt,
            background_music_title: asset.background_music_title,
            background_music_style: asset.background_music_style,
            background_music_prompt: asset.background_music_prompt,
            background_music: asset.background_music,
            click_sound: asset.click_sound,
            background_asset: asset.background_asset,
            status: asset.status,
            error: asset.error,
        }
    }
}

impl From<Match3DGeneratedItemAssetJson> for Match3DGeneratedItemAsset {
    fn from(asset: Match3DGeneratedItemAssetJson) -> Self {
        Self {
            item_id: asset.item_id,
            item_name: asset.item_name,
            image_src: asset.image_src,
            image_object_key: asset.image_object_key,
            image_views: asset.image_views,
            model_src: asset.model_src,
            model_object_key: asset.model_object_key,
            model_file_name: asset.model_file_name,
            task_uuid: asset.task_uuid,
            subscription_key: asset.subscription_key,
            sound_prompt: asset.sound_prompt,
            background_music_title: asset.background_music_title,
            background_music_style: asset.background_music_style,
            background_music_prompt: asset.background_music_prompt,
            background_music: asset.background_music,
            click_sound: asset.click_sound,
            background_asset: asset.background_asset,
            status: asset.status,
            error: asset.error,
        }
    }
}

impl From<shared_contracts::match3d_works::Match3DGeneratedItemAssetResponse>
    for Match3DGeneratedItemAsset
{
    fn from(asset: shared_contracts::match3d_works::Match3DGeneratedItemAssetResponse) -> Self {
        Self {
            item_id: asset.item_id,
            item_name: asset.item_name,
            image_src: asset.image_src,
            image_object_key: asset.image_object_key,
            image_views: asset
                .image_views
                .into_iter()
                .map(map_match3d_image_view_from_work)
                .collect(),
            model_src: asset.model_src,
            model_object_key: asset.model_object_key,
            model_file_name: asset.model_file_name,
            task_uuid: asset.task_uuid,
            subscription_key: asset.subscription_key,
            sound_prompt: asset.sound_prompt,
            background_music_title: asset.background_music_title,
            background_music_style: asset.background_music_style,
            background_music_prompt: asset.background_music_prompt,
            background_music: asset.background_music,
            click_sound: asset.click_sound,
            background_asset: asset.background_asset.map(
                |asset| Match3DGeneratedBackgroundAsset {
                    prompt: asset.prompt,
                    image_src: asset.image_src,
                    image_object_key: asset.image_object_key,
                    status: asset.status,
                    error: asset.error,
                },
            ),
            status: asset.status,
            error: asset.error,
        }
    }
}

fn resolve_author_display_name(
    state: &AppState,
    authenticated: &AuthenticatedAccessToken,
) -> String {
    state
        .auth_user_service()
        .get_user_by_id(authenticated.claims().user_id())
        .ok()
        .flatten()
        .map(|user| user.display_name)
        .filter(|value| !value.trim().is_empty())
        .unwrap_or_else(|| "玩家".to_string())
}

async fn generate_match3d_item_assets(
    state: &AppState,
    request_context: &RequestContext,
    authenticated: &AuthenticatedAccessToken,
    owner_user_id: &str,
    session_id: &str,
    profile_id: &str,
    config: &Match3DConfigJson,
    item_plan: Vec<Match3DGeneratedItemPlan>,
    background_music_plan: Match3DGeneratedBackgroundMusicPlan,
    existing_assets: Vec<Match3DGeneratedItemAsset>,
) -> Result<Vec<Match3DGeneratedItemAsset>, Response> {
    // 中文注释：外部生图、音频和 OSS 写入都留在 api-server，SpacetimeDB reducer 只保存确定性草稿。
    let target_item_count = resolve_match3d_generated_item_count(config);
    let mut assets = normalize_match3d_generated_item_assets_for_resume(existing_assets);
    if has_match3d_required_item_images(&assets, target_item_count)
        && (!config.generate_click_sound
            || assets
                .iter()
                .take(target_item_count)
                .all(|asset| asset.click_sound.is_some()))
        && assets
            .iter()
            .take(target_item_count)
            .any(|asset| asset.background_music.is_some())
    {
        return Ok(assets.into_iter().take(target_item_count).collect());
    }

    if !has_match3d_required_item_images(&assets, target_item_count) {
        assets = ensure_match3d_item_image_assets(
            state,
            request_context,
            authenticated,
            owner_user_id,
            session_id,
            profile_id,
            config,
            item_plan,
            background_music_plan.clone(),
            assets,
        )
        .await?;
    }

    let assets = ensure_match3d_background_music_asset(
        state,
        request_context,
        authenticated,
        owner_user_id,
        session_id,
        profile_id,
        &background_music_plan,
        assets,
    )
    .await?;

    let assets = ensure_match3d_click_sound_assets(
        state,
        request_context,
        authenticated,
        owner_user_id,
        session_id,
        profile_id,
        config,
        assets,
    )
        .await?;
    persist_match3d_generated_item_assets_snapshot(
        state,
        request_context,
        authenticated,
        session_id,
        owner_user_id,
        profile_id,
        &assets,
    )
    .await?;

    Ok(assets.into_iter().take(target_item_count).collect())
}

#[allow(clippy::too_many_arguments)]
async fn ensure_match3d_item_image_assets(
    state: &AppState,
    request_context: &RequestContext,
    authenticated: &AuthenticatedAccessToken,
    owner_user_id: &str,
    session_id: &str,
    profile_id: &str,
    config: &Match3DConfigJson,
    item_plan: Vec<Match3DGeneratedItemPlan>,
    background_music_plan: Match3DGeneratedBackgroundMusicPlan,
    existing_assets: Vec<Match3DGeneratedItemAsset>,
) -> Result<Vec<Match3DGeneratedItemAsset>, Response> {
    let mut assets = normalize_match3d_generated_item_assets_for_resume(existing_assets);
    let target_item_count = resolve_match3d_generated_item_count(config);
    let item_plan = normalize_match3d_item_plan(config, item_plan);
    let missing_items = item_plan
        .iter()
        .take(target_item_count)
        .enumerate()
        .filter_map(|(index, item)| {
            let item_id = format!("match3d-item-{}", index + 1);
            if assets
                .iter()
                .any(|asset| {
                    asset.item_id == item_id && is_match3d_generated_asset_image_ready(asset)
                })
            {
                return None;
            }
            Some(Match3DItemImageGenerationSeed {
                item_id,
                item_name: item.name.clone(),
                sound_prompt: item.sound_prompt.clone(),
                background_music_title: if index == 0 {
                    Some(background_music_plan.title.clone())
                } else {
                    None
                },
                background_music_style: if index == 0 {
                    Some(background_music_plan.style.clone())
                } else {
                    None
                },
                background_music_prompt: if index == 0 {
                    Some(background_music_plan.prompt.clone())
                } else {
                    None
                },
                background_asset: if index == 0 {
                    assets.first().and_then(|asset| asset.background_asset.clone())
                } else {
                    None
                },
            })
        })
        .collect::<Vec<_>>();

    let generated_assets = generate_match3d_item_image_assets_in_batches(
        state,
        request_context,
        MATCH3D_AGENT_PROVIDER,
        owner_user_id,
        session_id,
        profile_id,
        config,
        missing_items,
    )
    .await?;

    for generated_asset in generated_assets {
        upsert_match3d_generated_item_asset(&mut assets, generated_asset);
        persist_match3d_generated_item_assets_snapshot(
            state,
            request_context,
            authenticated,
            session_id,
            owner_user_id,
            profile_id,
            &assets,
        )
        .await?;
    }

    Ok(assets)
}

#[derive(Clone)]
struct Match3DItemImageGenerationSeed {
    item_id: String,
    item_name: String,
    sound_prompt: String,
    background_music_title: Option<String>,
    background_music_style: Option<String>,
    background_music_prompt: Option<String>,
    background_asset: Option<Match3DGeneratedBackgroundAsset>,
}

struct Match3DMaterialBatchOutput {
    task_id: String,
    generated_at_micros: i64,
    items: Vec<(Match3DItemImageGenerationSeed, Vec<Match3DSlicedItemImage>)>,
}

#[allow(clippy::too_many_arguments)]
async fn generate_match3d_item_image_assets_in_batches(
    state: &AppState,
    request_context: &RequestContext,
    provider: &str,
    owner_user_id: &str,
    session_id: &str,
    profile_id: &str,
    config: &Match3DConfigJson,
    item_seeds: Vec<Match3DItemImageGenerationSeed>,
) -> Result<Vec<Match3DGeneratedItemAsset>, Response> {
    if item_seeds.is_empty() {
        return Ok(Vec::new());
    }

    let mut batch_tasks = item_seeds
        .chunks(MATCH3D_MATERIAL_ITEM_BATCH_SIZE)
        .map(|chunk| {
            let chunk_seeds = chunk.to_vec();
            async move {
                let item_names = chunk_seeds
                    .iter()
                    .map(|item| item.item_name.clone())
                    .collect::<Vec<_>>();
                let material_sheet = generate_match3d_material_sheet(state, config, &item_names)
                    .await?;
                let generated_at_micros = current_utc_micros();
                let item_images = slice_match3d_material_sheet(&material_sheet.image, &item_names)?;
                Ok::<_, AppError>(Match3DMaterialBatchOutput {
                    task_id: material_sheet.task_id,
                    generated_at_micros,
                    items: chunk_seeds
                        .into_iter()
                        .zip(item_images.into_iter())
                        .collect::<Vec<_>>(),
                })
            }
        })
        .collect::<FuturesUnordered<_>>();

    let mut batches = Vec::new();
    while let Some(batch_result) = batch_tasks.next().await {
        batches.push(
            batch_result
                .map_err(|error| match3d_error_response(request_context, provider, error))?,
        );
    }

    let mut generated_assets = Vec::new();
    for batch in batches {
        let sheet_task_id = batch.task_id;
        let generated_at_micros = batch.generated_at_micros;
        for (item_index, (seed, item_images)) in batch.items.into_iter().enumerate() {
            let item_slug = build_match3d_item_slug(seed.item_id.as_str(), seed.item_name.as_str());
            let mut image_views = Vec::with_capacity(item_images.len());
            for (view_index, item_image) in item_images.into_iter().enumerate() {
                let view_number = view_index + 1;
                let view_upload = persist_match3d_generated_bytes(
                    state,
                    owner_user_id,
                    session_id,
                    profile_id,
                    &["items", item_slug.as_str(), "views"],
                    format!("view-{view_number:02}.png").as_str(),
                    "image/png",
                    item_image.bytes,
                    "match3d_item_image_view",
                    Some(sheet_task_id.as_str()),
                    generated_at_micros
                        .saturating_add((item_index * MATCH3D_ITEM_VIEW_COUNT + view_index) as i64 + 1),
                )
                .await
                .map_err(|error| match3d_error_response(request_context, provider, error))?;
                image_views.push(Match3DGeneratedItemImageView {
                    view_id: format!("view-{view_number:02}"),
                    view_index: view_number as u32,
                    image_src: Some(view_upload.src),
                    image_object_key: Some(view_upload.object_key),
                });
            }
            let primary_view = image_views.first().cloned();
            generated_assets.push(Match3DGeneratedItemAsset {
                item_id: seed.item_id,
                item_name: seed.item_name,
                image_src: primary_view.as_ref().and_then(|view| view.image_src.clone()),
                image_object_key: primary_view
                    .as_ref()
                    .and_then(|view| view.image_object_key.clone()),
                image_views,
                model_src: None,
                model_object_key: None,
                model_file_name: None,
                task_uuid: None,
                subscription_key: None,
                sound_prompt: Some(seed.sound_prompt),
                background_music_title: seed.background_music_title,
                background_music_style: seed.background_music_style,
                background_music_prompt: seed.background_music_prompt,
                background_music: None,
                click_sound: None,
                background_asset: seed.background_asset,
                status: "image_ready".to_string(),
                error: None,
            });
        }
    }

    Ok(sort_match3d_generated_assets(generated_assets))
}

#[allow(clippy::too_many_arguments)]
async fn ensure_match3d_click_sound_assets(
    state: &AppState,
    request_context: &RequestContext,
    authenticated: &AuthenticatedAccessToken,
    owner_user_id: &str,
    session_id: &str,
    profile_id: &str,
    config: &Match3DConfigJson,
    assets: Vec<Match3DGeneratedItemAsset>,
) -> Result<Vec<Match3DGeneratedItemAsset>, Response> {
    if !config.generate_click_sound {
        return Ok(assets);
    }

    let mut assets = normalize_match3d_generated_item_assets_for_resume(assets);
    let seeds = assets
        .iter()
        .filter(|asset| is_match3d_generated_asset_image_ready(asset))
        .filter(|asset| asset.click_sound.is_none())
        .cloned()
        .collect::<Vec<_>>();
    if seeds.is_empty() {
        return Ok(assets);
    }

    let mut sound_tasks = seeds
        .into_iter()
        .map(|asset| async move {
            let prompt = asset
                .sound_prompt
                .clone()
                .filter(|value| !value.trim().is_empty())
                .unwrap_or_else(|| {
                    build_fallback_match3d_item_sound_prompt(config, asset.item_name.as_str())
                });
            let result = generate_match3d_click_sound_asset(
                state,
                owner_user_id,
                profile_id,
                asset.item_id.as_str(),
                asset.item_name.as_str(),
                prompt.as_str(),
            )
            .await;
            (asset, prompt, result)
        })
        .collect::<FuturesUnordered<_>>();

    while let Some((mut asset, prompt, result)) = sound_tasks.next().await {
        match result {
            Ok(click_sound) => {
                asset.sound_prompt = Some(prompt);
                asset.click_sound = Some(click_sound);
                asset.error = None;
            }
            Err(error) => {
                tracing::warn!(
                    provider = MATCH3D_AGENT_PROVIDER,
                    session_id,
                    profile_id,
                    item_id = asset.item_id.as_str(),
                    error = %error,
                    "抓大鹅入口内联点击音效生成失败，保留草稿并允许结果页重试"
                );
            }
        }
        upsert_match3d_generated_item_asset(&mut assets, asset);
        persist_match3d_generated_item_assets_snapshot(
            state,
            request_context,
            authenticated,
            session_id,
            owner_user_id,
            profile_id,
            &assets,
        )
        .await?;
    }

    Ok(assets)
}

#[allow(clippy::too_many_arguments)]
async fn ensure_match3d_background_music_asset(
    state: &AppState,
    request_context: &RequestContext,
    authenticated: &AuthenticatedAccessToken,
    owner_user_id: &str,
    session_id: &str,
    profile_id: &str,
    plan: &Match3DGeneratedBackgroundMusicPlan,
    assets: Vec<Match3DGeneratedItemAsset>,
) -> Result<Vec<Match3DGeneratedItemAsset>, Response> {
    let mut assets = normalize_match3d_generated_item_assets_for_resume(assets);
    if assets
        .iter()
        .any(|asset| {
            asset
                .background_music
                .as_ref()
                .is_some_and(|music| !music.audio_src.trim().is_empty())
        })
    {
        return Ok(assets);
    }

    let Some(first_index) = assets
        .iter()
        .enumerate()
        .min_by_key(|(_, asset)| match3d_item_sort_index(asset.item_id.as_str()))
        .map(|(index, _)| index)
    else {
        return Ok(assets);
    };

    let title = normalize_match3d_audio_title(plan.title.as_str());
    if title.is_empty() {
        return Ok(assets);
    }
    let style = normalize_match3d_audio_style(plan.style.as_str());
    match generate_match3d_background_music_asset(state, owner_user_id, profile_id, &title, &style)
        .await
    {
        Ok(music) => {
            let asset = &mut assets[first_index];
            asset.background_music_title = Some(title);
            asset.background_music_style = (!style.trim().is_empty()).then_some(style);
            asset.background_music_prompt = Some(String::new());
            asset.background_music = Some(music);
            asset.error = None;
            persist_match3d_generated_item_assets_snapshot(
                state,
                request_context,
                authenticated,
                session_id,
                owner_user_id,
                profile_id,
                &assets,
            )
            .await?;
        }
        Err(error) => {
            tracing::warn!(
                provider = MATCH3D_AGENT_PROVIDER,
                session_id,
                profile_id,
                error = %error,
                "抓大鹅草稿背景音乐生成失败，保留草稿并允许结果页重试"
            );
        }
    }

    Ok(assets)
}

async fn generate_match3d_click_sound_asset(
    state: &AppState,
    owner_user_id: &str,
    profile_id: &str,
    item_id: &str,
    item_name: &str,
    prompt: &str,
) -> Result<CreationAudioAsset, AppError> {
    let mut asset = generate_sound_effect_asset_for_creation(
        state,
        owner_user_id,
        prompt.to_string(),
        Some(3),
        None,
        GeneratedCreationAudioTarget {
            entity_kind: "match3d_item".to_string(),
            entity_id: item_id.to_string(),
            slot: "click_sound".to_string(),
            asset_kind: MATCH3D_CLICK_SOUND_ASSET_KIND.to_string(),
            profile_id: Some(profile_id.to_string()),
            storage_prefix: LegacyAssetPrefix::Match3DAssets,
        },
    )
    .await?;
    asset.title = Some(format!("{item_name}点击音效"));
    Ok(asset)
}

async fn generate_match3d_background_music_asset(
    state: &AppState,
    owner_user_id: &str,
    profile_id: &str,
    title: &str,
    style: &str,
) -> Result<CreationAudioAsset, AppError> {
    generate_background_music_asset_for_creation(
        state,
        owner_user_id,
        String::new(),
        title.to_string(),
        (!style.trim().is_empty()).then_some(style.to_string()),
        None,
        GeneratedCreationAudioTarget {
            entity_kind: "match3d_work".to_string(),
            entity_id: profile_id.to_string(),
            slot: "background_music".to_string(),
            asset_kind: MATCH3D_BACKGROUND_MUSIC_ASSET_KIND.to_string(),
            profile_id: Some(profile_id.to_string()),
            storage_prefix: LegacyAssetPrefix::Match3DAssets,
        },
    )
    .await
}

#[allow(clippy::too_many_arguments)]
async fn append_match3d_item_assets(
    state: &AppState,
    request_context: &RequestContext,
    authenticated: &AuthenticatedAccessToken,
    owner_user_id: &str,
    session_id: &str,
    profile_id: &str,
    config: &Match3DConfigJson,
    item_names: Vec<String>,
    existing_assets: Vec<Match3DGeneratedItemAsset>,
) -> Result<Vec<Match3DGeneratedItemAsset>, Response> {
    let mut assets = sort_match3d_generated_assets(existing_assets);
    let new_item_names = item_names
        .into_iter()
        .filter(|name| {
            !assets
                .iter()
                .any(|asset| asset.item_name.trim() == name.trim())
        })
        .collect::<Vec<_>>();
    if new_item_names.is_empty() {
        return Ok(assets);
    }

    let mut next_item_index = next_match3d_generated_item_index(&assets);
    let item_seeds = new_item_names
        .into_iter()
        .map(|item_name| {
            let item_id = allocate_match3d_generated_item_id(&assets, &mut next_item_index);
            Match3DItemImageGenerationSeed {
                item_id,
                sound_prompt: build_fallback_match3d_item_sound_prompt(config, item_name.as_str()),
                item_name,
                background_music_title: None,
                background_music_style: None,
                background_music_prompt: None,
                background_asset: None,
            }
        })
        .collect::<Vec<_>>();
    let generated_assets = generate_match3d_item_image_assets_in_batches(
        state,
        request_context,
        MATCH3D_WORKS_PROVIDER,
        owner_user_id,
        session_id,
        profile_id,
        config,
        item_seeds,
    )
    .await?;
    for generated_asset in generated_assets {
        upsert_match3d_generated_item_asset(&mut assets, generated_asset);
        persist_match3d_generated_item_assets_snapshot(
            state,
            request_context,
            authenticated,
            session_id,
            owner_user_id,
            profile_id,
            &assets,
        )
        .await?;
    }
    ensure_match3d_click_sound_assets(
        state,
        request_context,
        authenticated,
        owner_user_id,
        session_id,
        profile_id,
        config,
        assets,
    )
    .await
}

struct Match3DMaterialSheet {
    task_id: String,
    image: DownloadedOpenAiImage,
}

struct Match3DSlicedItemImage {
    bytes: Vec<u8>,
}

async fn generate_match3d_draft_plan(
    state: &AppState,
    config: &Match3DConfigJson,
) -> Match3DGeneratedDraftPlan {
    let Some(llm_client) = state
        .creative_agent_gpt5_client()
        .or_else(|| state.llm_client())
    else {
        return fallback_match3d_draft_plan(config);
    };
    let system_prompt = "你是抓大鹅游戏的草稿生成编辑，只返回 JSON。";
    let target_item_count = resolve_match3d_generated_item_count(config);
    let user_prompt = format!(
        "题材设定：{}\n请生成抓大鹅游戏草稿生成计划。要求：只返回 JSON 对象，字段为 gameName、tags、backgroundMusic、backgroundPrompt、items。gameName 为 4 到 12 个中文字符，不要包含“作品”“游戏”；tags 为 3 到 6 个中文短标签，每个 2 到 6 个汉字；backgroundMusic 包含 title、style、prompt，title 是本作品背景音乐名称且不超过 40 个中文字符，style 是逗号分隔的音乐风格，prompt 必须返回空字符串；backgroundPrompt 是用于生成局内背景图的中文提示词，必须描述竖屏移动端抓大鹅画面，绿色纵向渐变背景与居中浅锅/圆盘状竞技区域融合为一张完整背景图，无 UI、无文字、无按钮、无倒计时、无物品；items 必须正好 {} 项，每项包含 name 和 soundPrompt，name 为 2 到 6 个汉字，soundPrompt 是用于生成物品点击消除音效的中文提示词。不要生成描述。",
        config.theme_text, target_item_count
    );
    let response = llm_client
        .request_text(
            LlmTextRequest::new(vec![
                LlmMessage::system(system_prompt),
                LlmMessage::user(user_prompt),
            ])
            .with_model(MATCH3D_WORK_METADATA_LLM_MODEL)
            .with_responses_api(),
        )
        .await;

    match response {
        Ok(response) => parse_match3d_draft_plan(response.content.as_str(), config)
            .unwrap_or_else(|| fallback_match3d_draft_plan(config)),
        Err(error) => {
            tracing::warn!(
                provider = MATCH3D_AGENT_PROVIDER,
                theme_text = config.theme_text.as_str(),
                error = %error,
                "抓大鹅草稿生成计划失败，降级使用本地生成计划"
            );
            fallback_match3d_draft_plan(config)
        }
    }
}

fn parse_match3d_draft_plan(
    raw: &str,
    config: &Match3DConfigJson,
) -> Option<Match3DGeneratedDraftPlan> {
    let raw = raw.trim();
    let json_text = if let Some(start) = raw.find('{')
        && let Some(end) = raw.rfind('}')
        && end > start
    {
        &raw[start..=end]
    } else {
        raw
    };
    let value = serde_json::from_str::<Value>(json_text).ok()?;
    let game_name = normalize_match3d_game_name(value.get("gameName")?.as_str()?);
    if game_name.is_empty() {
        return None;
    }
    let tags = value
        .get("tags")
        .and_then(Value::as_array)
        .map(|items| normalize_match3d_tag_candidates(items.iter().filter_map(Value::as_str)))
        .unwrap_or_default();
    let fallback = fallback_match3d_draft_plan(config);
    let items = value
        .get("items")
        .and_then(Value::as_array)
        .map(|items| {
            items
                .iter()
                .filter_map(|item| {
                    let name =
                        normalize_match3d_item_name(item.get("name").and_then(Value::as_str)?);
                    if name.is_empty() {
                        return None;
                    }
                    let sound_prompt = item
                        .get("soundPrompt")
                        .or_else(|| item.get("sound_prompt"))
                        .and_then(Value::as_str)
                        .map(normalize_match3d_audio_prompt)
                        .filter(|value| !value.is_empty())
                        .unwrap_or_else(|| build_fallback_match3d_item_sound_prompt(config, &name));
                    Some(Match3DGeneratedItemPlan { name, sound_prompt })
                })
                .collect::<Vec<_>>()
        })
        .unwrap_or_default();
    let background_music = value
        .get("backgroundMusic")
        .or_else(|| value.get("background_music"))
        .and_then(|music| {
            let title = music
                .get("title")
                .and_then(Value::as_str)
                .map(normalize_match3d_audio_title)
                .filter(|value| !value.is_empty())?;
            let style = music
                .get("style")
                .and_then(Value::as_str)
                .map(normalize_match3d_audio_style)
                .filter(|value| !value.is_empty())?;
            let prompt = music
                .get("prompt")
                .and_then(Value::as_str)
                .map(normalize_match3d_audio_prompt)
                .unwrap_or_default();
            Some(Match3DGeneratedBackgroundMusicPlan {
                title,
                style,
                prompt,
            })
        })
        .unwrap_or(fallback.background_music);
    let background_prompt = value
        .get("backgroundPrompt")
        .or_else(|| value.get("background_prompt"))
        .and_then(Value::as_str)
        .map(normalize_match3d_background_prompt)
        .filter(|value| !value.is_empty())
        .unwrap_or(fallback.background_prompt);

    Some(Match3DGeneratedDraftPlan {
        metadata: Match3DGeneratedWorkMetadata {
            game_name,
            tags: normalize_match3d_tag_candidates(tags),
        },
        items: normalize_match3d_item_plan(config, items),
        background_music,
        background_prompt,
    })
}

#[cfg(test)]
fn parse_match3d_work_metadata(raw: &str) -> Option<Match3DGeneratedWorkMetadata> {
    let config = Match3DConfigJson {
        theme_text: MATCH3D_DEFAULT_THEME.to_string(),
        reference_image_src: None,
        clear_count: MATCH3D_DEFAULT_CLEAR_COUNT,
        difficulty: MATCH3D_DEFAULT_DIFFICULTY,
        asset_style_id: None,
        asset_style_label: None,
        asset_style_prompt: None,
        generate_click_sound: false,
    };
    parse_match3d_draft_plan(raw, &config).map(|plan| plan.metadata)
}

fn normalize_match3d_game_name(raw: &str) -> String {
    raw.trim()
        .trim_matches(['"', '\'', '“', '”', '。', '，', ',', '、'])
        .chars()
        .filter(|character| !character.is_control())
        .take(16)
        .collect::<String>()
        .trim()
        .to_string()
}

fn fallback_match3d_work_metadata(theme_text: &str) -> Match3DGeneratedWorkMetadata {
    let theme = theme_text.trim();
    let normalized_theme = if theme.is_empty() { "主题" } else { theme };
    Match3DGeneratedWorkMetadata {
        game_name: format!("{normalized_theme}抓大鹅"),
        tags: normalize_match3d_tag_candidates([normalized_theme, "抓大鹅", "经典消除", "2D素材"]),
    }
}

fn fallback_match3d_draft_plan(config: &Match3DConfigJson) -> Match3DGeneratedDraftPlan {
    let metadata = fallback_match3d_work_metadata(config.theme_text.as_str());
    let items = fallback_match3d_item_names(config.theme_text.as_str())
        .into_iter()
        .map(|name| Match3DGeneratedItemPlan {
            sound_prompt: build_fallback_match3d_item_sound_prompt(config, &name),
            name,
        })
        .collect::<Vec<_>>();
    Match3DGeneratedDraftPlan {
        background_music: build_fallback_match3d_background_music_plan(config, &metadata.game_name),
        background_prompt: build_fallback_match3d_background_prompt(config),
        metadata,
        items,
    }
}

fn normalize_match3d_item_name(raw: &str) -> String {
    raw.trim()
        .trim_matches(['"', '\'', '“', '”', '。', '，', ',', '、'])
        .chars()
        .filter(|character| !character.is_control())
        .take(12)
        .collect::<String>()
        .trim()
        .to_string()
}

fn fallback_match3d_item_names(theme_text: &str) -> Vec<String> {
    let theme = theme_text.trim();
    let normalized_theme = if theme.is_empty() { "主题" } else { theme };
    [
        "小物件",
        "徽章",
        "摆件",
        "挂件",
        "圆球",
        "方块",
        "钥匙",
        "杯子",
        "糖果",
        "星星",
        "宝石",
        "铃铛",
        "叶片",
        "蘑菇",
        "花朵",
        "果冻",
        "小瓶",
        "帽子",
        "贝壳",
        "纽扣",
        "积木",
    ]
        .into_iter()
        .map(|suffix| format!("{normalized_theme}{suffix}"))
        .take(MATCH3D_MAX_GENERATED_ITEM_COUNT)
        .collect()
}

fn normalize_match3d_item_plan(
    config: &Match3DConfigJson,
    items: Vec<Match3DGeneratedItemPlan>,
) -> Vec<Match3DGeneratedItemPlan> {
    let target_item_count = resolve_match3d_generated_item_count(config);
    let mut normalized = Vec::new();
    for item in items {
        let name = normalize_match3d_item_name(item.name.as_str());
        if name.is_empty()
            || normalized
                .iter()
                .any(|candidate: &Match3DGeneratedItemPlan| candidate.name == name)
        {
            continue;
        }
        let sound_prompt = normalize_match3d_audio_prompt(item.sound_prompt.as_str());
        normalized.push(Match3DGeneratedItemPlan {
            sound_prompt: if sound_prompt.is_empty() {
                build_fallback_match3d_item_sound_prompt(config, &name)
            } else {
                sound_prompt
            },
            name,
        });
        if normalized.len() >= target_item_count {
            break;
        }
    }

    if normalized.len() < target_item_count {
        for name in fallback_match3d_item_names(config.theme_text.as_str()) {
            if normalized.iter().any(|candidate| candidate.name == name) {
                continue;
            }
            normalized.push(Match3DGeneratedItemPlan {
                sound_prompt: build_fallback_match3d_item_sound_prompt(config, &name),
                name,
            });
            if normalized.len() >= target_item_count {
                break;
            }
        }
    }

    normalized
}

fn normalize_match3d_batch_item_names(items: Vec<String>) -> Vec<String> {
    let mut normalized = Vec::new();
    for item in items {
        let name = normalize_match3d_item_name(item.as_str());
        if name.is_empty() || normalized.iter().any(|candidate| candidate == &name) {
            continue;
        }
        normalized.push(name);
        if normalized.len() >= MATCH3D_MAX_GENERATED_ITEM_COUNT {
            break;
        }
    }
    normalized
}

fn normalize_match3d_cover_prompt(raw: &str) -> String {
    raw.trim()
        .chars()
        .filter(|character| !character.is_control())
        .take(900)
        .collect::<String>()
        .trim()
        .to_string()
}

fn normalize_match3d_audio_title(raw: &str) -> String {
    raw.trim()
        .trim_matches(['"', '\'', '“', '”', '。', '，', ',', '、'])
        .chars()
        .filter(|character| !character.is_control())
        .take(40)
        .collect::<String>()
        .trim()
        .to_string()
}

fn normalize_match3d_audio_style(raw: &str) -> String {
    raw.split([',', '，', '、', '\n'])
        .map(normalize_match3d_tag)
        .filter(|value| !value.is_empty())
        .take(6)
        .collect::<Vec<_>>()
        .join(", ")
}

fn normalize_match3d_audio_prompt(raw: &str) -> String {
    raw.trim()
        .chars()
        .filter(|character| !character.is_control())
        .take(500)
        .collect::<String>()
        .trim()
        .to_string()
}

fn normalize_match3d_background_prompt(raw: &str) -> String {
    raw.trim()
        .chars()
        .filter(|character| !character.is_control())
        .take(900)
        .collect::<String>()
        .trim()
        .to_string()
}

fn build_fallback_match3d_background_prompt(config: &Match3DConfigJson) -> String {
    let theme = config.theme_text.trim();
    let normalized_theme = if theme.is_empty() { "抓大鹅" } else { theme };
    normalize_match3d_background_prompt(
        format!(
            "{normalized_theme}题材抓大鹅游戏竖屏背景图，绿色纵向渐变画面与居中浅锅、圆盘、托盘状竞技区域自然融合，锅沿为柔和金色或木质质感，中央区域留出清晰可玩空间，整体像一张完整游戏背景截图。无文字、无水印、无 UI、无按钮、无倒计时、无物品、无角色、无手。"
        )
        .as_str(),
    )
}

fn build_fallback_match3d_background_music_plan(
    _config: &Match3DConfigJson,
    game_name: &str,
) -> Match3DGeneratedBackgroundMusicPlan {
    let title = normalize_match3d_audio_title(format!("{game_name}音乐").as_str());
    let style = "轻快, 休闲, 消除, instrumental".to_string();
    Match3DGeneratedBackgroundMusicPlan {
        title,
        style: style.clone(),
        prompt: String::new(),
    }
}

fn build_fallback_match3d_item_sound_prompt(config: &Match3DConfigJson, item_name: &str) -> String {
    let theme = config.theme_text.trim();
    let normalized_theme = if theme.is_empty() { "抓大鹅" } else { theme };
    normalize_match3d_audio_prompt(
        format!(
            "{normalized_theme}题材抓大鹅中“{item_name}”被点击并消除时的短促反馈音效，清脆、可爱、有轻微弹跳感，适合移动端休闲游戏。"
        )
        .as_str(),
    )
}

fn normalize_match3d_generated_item_assets_for_resume(
    assets: Vec<Match3DGeneratedItemAsset>,
) -> Vec<Match3DGeneratedItemAsset> {
    let mut normalized = Vec::new();
    for asset in sort_match3d_generated_assets(assets) {
        if asset.item_id.trim().is_empty()
            || normalized
                .iter()
                .any(|candidate: &Match3DGeneratedItemAsset| candidate.item_id == asset.item_id)
        {
            continue;
        }
        normalized.push(asset);
        if normalized.len() >= MATCH3D_MAX_GENERATED_ITEM_COUNT {
            break;
        }
    }
    normalized
}

fn resolve_match3d_generated_item_count(config: &Match3DConfigJson) -> usize {
    match config.clear_count {
        8 => 3,
        12 => 9,
        16 => 15,
        20 | 21 => 21,
        _ => match config.difficulty {
            0..=2 => 3,
            3..=4 => 9,
            5..=6 => 15,
            _ => 21,
        },
    }
    .min(MATCH3D_MAX_GENERATED_ITEM_COUNT)
}

fn sort_match3d_generated_assets(
    mut assets: Vec<Match3DGeneratedItemAsset>,
) -> Vec<Match3DGeneratedItemAsset> {
    assets.sort_by(|left, right| {
        match3d_item_sort_index(left.item_id.as_str())
            .cmp(&match3d_item_sort_index(right.item_id.as_str()))
            .then_with(|| left.item_id.cmp(&right.item_id))
    });
    assets
}

fn match3d_item_sort_index(item_id: &str) -> u32 {
    item_id
        .rsplit('-')
        .next()
        .and_then(|value| value.parse::<u32>().ok())
        .unwrap_or(u32::MAX)
}

fn is_match3d_generated_asset_image_ready(asset: &Match3DGeneratedItemAsset) -> bool {
    let view_count = asset
        .image_views
        .iter()
        .filter(|view| {
            view.image_object_key
                .as_deref()
                .map(str::trim)
                .filter(|value| !value.is_empty())
                .is_some()
                || view
                    .image_src
                    .as_deref()
                    .map(str::trim)
                    .filter(|value| !value.is_empty())
                    .is_some()
        })
        .count();
    view_count >= MATCH3D_ITEM_VIEW_COUNT
}

fn has_match3d_required_item_images(
    assets: &[Match3DGeneratedItemAsset],
    required_item_count: usize,
) -> bool {
    assets.len() >= required_item_count
        && assets
            .iter()
            .take(required_item_count)
            .all(is_match3d_generated_asset_image_ready)
}

fn upsert_match3d_generated_item_asset(
    assets: &mut Vec<Match3DGeneratedItemAsset>,
    asset: Match3DGeneratedItemAsset,
) {
    if let Some(current) = assets
        .iter_mut()
        .find(|candidate| candidate.item_id == asset.item_id)
    {
        *current = asset;
        *assets = sort_match3d_generated_assets(std::mem::take(assets));
        return;
    }
    assets.push(asset);
    *assets = sort_match3d_generated_assets(std::mem::take(assets));
}

fn next_match3d_generated_item_index(assets: &[Match3DGeneratedItemAsset]) -> u32 {
    assets
        .iter()
        .filter_map(|asset| {
            let value = match3d_item_sort_index(asset.item_id.as_str());
            if value == u32::MAX { None } else { Some(value) }
        })
        .max()
        .unwrap_or(0)
        .saturating_add(1)
}

fn allocate_match3d_generated_item_id(
    assets: &[Match3DGeneratedItemAsset],
    next_item_index: &mut u32,
) -> String {
    loop {
        let candidate = format!("match3d-item-{}", *next_item_index);
        *next_item_index = next_item_index.saturating_add(1);
        if !assets.iter().any(|asset| asset.item_id == candidate) {
            return candidate;
        }
    }
}

fn is_match3d_background_asset_ready(asset: &Match3DGeneratedBackgroundAsset) -> bool {
    asset.status == "image_ready"
        && (asset
            .image_object_key
            .as_deref()
            .map(str::trim)
            .filter(|value| !value.is_empty())
            .is_some()
            || asset
                .image_src
                .as_deref()
                .map(str::trim)
                .filter(|value| !value.is_empty())
                .is_some())
}

#[allow(clippy::too_many_arguments)]
async fn ensure_match3d_background_asset(
    state: &AppState,
    request_context: &RequestContext,
    authenticated: &AuthenticatedAccessToken,
    owner_user_id: &str,
    session_id: &str,
    profile_id: &str,
    config: &Match3DConfigJson,
    background_prompt: &str,
    mut assets: Vec<Match3DGeneratedItemAsset>,
) -> Result<Vec<Match3DGeneratedItemAsset>, Response> {
    let normalized_prompt = normalize_match3d_background_prompt(background_prompt);
    let resolved_prompt = if normalized_prompt.is_empty() {
        build_fallback_match3d_background_prompt(config)
    } else {
        normalized_prompt
    };
    if let Some(existing_background) = find_match3d_generated_background_asset(&assets) {
        if is_match3d_background_asset_ready(&existing_background) {
            return Ok(assets);
        }
    }

    let generated_background =
        generate_match3d_background_image(state, owner_user_id, session_id, profile_id, config, &resolved_prompt)
            .await
            .map_err(|error| match3d_error_response(request_context, MATCH3D_AGENT_PROVIDER, error))?;
    attach_match3d_background_asset_to_assets(&mut assets, generated_background);
    persist_match3d_generated_item_assets_snapshot(
        state,
        request_context,
        authenticated,
        session_id,
        owner_user_id,
        profile_id,
        &assets,
    )
    .await?;
    Ok(assets)
}

fn attach_match3d_background_asset_to_assets(
    assets: &mut Vec<Match3DGeneratedItemAsset>,
    background_asset: Match3DGeneratedBackgroundAsset,
) {
    if let Some(first_asset) = assets
        .iter_mut()
        .min_by_key(|asset| match3d_item_sort_index(asset.item_id.as_str()))
    {
        first_asset.background_asset = Some(background_asset);
    }
}

fn build_match3d_item_slug(item_id: &str, item_name: &str) -> String {
    format!(
        "{}-{}",
        sanitize_match3d_asset_segment(item_id, "match3d-item"),
        sanitize_match3d_asset_segment(item_name, "item")
    )
}

async fn generate_match3d_cover_image_asset(
    state: &AppState,
    owner_user_id: &str,
    session_id: &str,
    profile_id: &str,
    config: &Match3DConfigJson,
    prompt: &str,
    reference_image_src: Option<String>,
) -> Result<Match3DAssetUpload, AppError> {
    let settings = require_openai_image_settings(state)?;
    let http_client = build_openai_image_http_client(&settings)?;
    let reference_image = resolve_match3d_reference_image_data_url(
        state,
        reference_image_src.as_deref(),
        MATCH3D_ITEM_IMAGE_MAX_BYTES,
    )
    .await?;
    let reference_images = reference_image.into_iter().collect::<Vec<_>>();
    let generated = create_openai_image_generation(
        &http_client,
        &settings,
        build_match3d_cover_generation_prompt(config, prompt).as_str(),
        Some("文字、水印、UI、按钮、倒计时、分数、教程浮层、菜单、边框"),
        "1:1",
        1,
        reference_images.as_slice(),
        "抓大鹅封面图生成失败",
    )
    .await?;
    let image = generated.images.into_iter().next().ok_or_else(|| {
        AppError::from_status(StatusCode::BAD_GATEWAY).with_details(json!({
            "provider": "vector-engine",
            "message": "抓大鹅封面图生成失败：未返回图片",
        }))
    })?;

    let file_name = format!("cover.{}", image.extension);
    persist_match3d_generated_bytes(
        state,
        owner_user_id,
        session_id,
        profile_id,
        &["cover", generated.task_id.as_str()],
        file_name.as_str(),
        image.mime_type.as_str(),
        image.bytes,
        "match3d_cover_image",
        Some(generated.task_id.as_str()),
        current_utc_micros(),
    )
    .await
}

fn build_match3d_cover_generation_prompt(config: &Match3DConfigJson, prompt: &str) -> String {
    let style_clause = resolve_match3d_asset_style_prompt(config)
        .map(|style| format!("整体美术风格遵循：{style}。"))
        .unwrap_or_default();
    format!(
        "{theme}题材抓大鹅作品封面图。{style_clause}{prompt}。画面为1:1封面，主体清晰、色彩明亮、适合移动端作品卡片展示；可以包含生成物品或主题元素，但不要出现任何文字、按钮、倒计时、分数或 UI。",
        theme = config.theme_text,
        style_clause = style_clause,
        prompt = prompt,
    )
}

async fn generate_match3d_background_image(
    state: &AppState,
    owner_user_id: &str,
    session_id: &str,
    profile_id: &str,
    config: &Match3DConfigJson,
    prompt: &str,
) -> Result<Match3DGeneratedBackgroundAsset, AppError> {
    let settings = require_openai_image_settings(state)?;
    let http_client = build_openai_image_http_client(&settings)?;
    let reference_image = load_match3d_background_reference_data_url().await?;
    let generated = create_openai_image_generation(
        &http_client,
        &settings,
        build_match3d_background_generation_prompt(config, prompt).as_str(),
        Some("文字、水印、UI、按钮、倒计时、分数、物品、角色、手、边框、教程浮层、菜单"),
        "9:16",
        1,
        &[reference_image],
        "抓大鹅背景图生成失败",
    )
    .await?;
    let image = generated.images.into_iter().next().ok_or_else(|| {
        AppError::from_status(StatusCode::BAD_GATEWAY).with_details(json!({
            "provider": "vector-engine",
            "message": "抓大鹅背景图生成失败：未返回图片",
        }))
    })?;
    let upload = persist_match3d_generated_bytes(
        state,
        owner_user_id,
        session_id,
        profile_id,
        &["background", generated.task_id.as_str()],
        "background.png",
        image.mime_type.as_str(),
        image.bytes,
        "match3d_background_image",
        Some(generated.task_id.as_str()),
        current_utc_micros(),
    )
    .await?;

    Ok(Match3DGeneratedBackgroundAsset {
        prompt: prompt.to_string(),
        image_src: Some(upload.src),
        image_object_key: Some(upload.object_key),
        status: "image_ready".to_string(),
        error: None,
    })
}

async fn load_match3d_background_reference_data_url() -> Result<String, AppError> {
    let bytes = tokio::fs::read(MATCH3D_BACKGROUND_REFERENCE_IMAGE_PATH)
        .await
        .map_err(|error| {
            AppError::from_status(StatusCode::INTERNAL_SERVER_ERROR).with_details(json!({
                "provider": MATCH3D_AGENT_PROVIDER,
                "message": format!("读取抓大鹅背景参考图失败：{error}"),
            }))
        })?;
    if bytes.is_empty() {
        return Err(
            AppError::from_status(StatusCode::INTERNAL_SERVER_ERROR).with_details(json!({
                "provider": MATCH3D_AGENT_PROVIDER,
                "message": "抓大鹅背景参考图为空",
            })),
        );
    }
    Ok(format!(
        "data:image/png;base64,{}",
        BASE64_STANDARD.encode(bytes)
    ))
}

fn build_match3d_background_generation_prompt(
    config: &Match3DConfigJson,
    prompt: &str,
) -> String {
    let style_clause = resolve_match3d_asset_style_prompt(config)
        .map(|style| format!("整体美术风格参考：{style}。"))
        .unwrap_or_default();
    format!(
        "{prompt}\n{style_clause}严格参考输入图的构图关系：绿色纵向背景与居中锅状圆形游戏区域融合为一张完整竖屏背景图。画面必须是纯背景和容器空间，中央锅内留出清晰区域给 2D 物品素材叠放，顶部预留少量安全空间给返回、倒计时和重开按钮，但图片内不要画任何 UI。"
    )
}

async fn generate_match3d_material_sheet(
    state: &AppState,
    config: &Match3DConfigJson,
    item_names: &[String],
) -> Result<Match3DMaterialSheet, AppError> {
    let settings = require_openai_image_settings(state)?;
    let http_client = build_openai_image_http_client(&settings)?;
    let prompt = build_match3d_material_sheet_prompt(config, item_names);
    let generated = create_openai_image_generation(
        &http_client,
        &settings,
        prompt.as_str(),
        Some("文字、水印、UI、边框、网格线、标签、人物手部、复杂背景"),
        "1:1",
        1,
        &[],
        "抓大鹅素材图生成失败",
    )
    .await?;
    let image = generated.images.into_iter().next().ok_or_else(|| {
        AppError::from_status(StatusCode::BAD_GATEWAY).with_details(json!({
            "provider": "vector-engine",
            "message": "抓大鹅素材图生成失败：未返回图片",
        }))
    })?;

    Ok(Match3DMaterialSheet {
        task_id: generated.task_id,
        image,
    })
}

async fn download_match3d_legacy_model(
    file: &hyper3d_contract::Hyper3dDownloadFilePayload,
) -> Result<Match3DDownloadedModel, AppError> {
    let http_client = reqwest::Client::builder()
        .timeout(Duration::from_millis(
            MATCH3D_LEGACY_MODEL_DOWNLOAD_TIMEOUT_MS,
        ))
        .build()
        .map_err(|error| match3d_bad_gateway(format!("构造历史模型下载客户端失败：{error}")))?;
    tracing::info!(
        provider = MATCH3D_AGENT_PROVIDER,
        file_name = file.name.as_str(),
        "抓大鹅历史 GLB 下载开始"
    );
    let response = http_client
        .get(file.url.as_str())
        .send()
        .await
        .map_err(|error| match3d_bad_gateway(format!("下载历史模型失败：{error}")))?;
    let status = response.status();
    let content_type = response
        .headers()
        .get(header::CONTENT_TYPE)
        .and_then(|value| value.to_str().ok())
        .unwrap_or("model/gltf-binary")
        .to_string();
    let bytes = response
        .bytes()
        .await
        .map_err(|error| match3d_bad_gateway(format!("读取历史模型内容失败：{error}")))?;
    if !status.is_success() {
        return Err(match3d_bad_gateway(format!(
            "下载历史模型失败：HTTP {}",
            status.as_u16()
        )));
    }
    if !is_match3d_downloaded_model_payload(file.name.as_str(), content_type.as_str()) {
        return Err(match3d_bad_gateway("历史模型下载结果不是 GLB 模型文件"));
    }
    if bytes.is_empty() || bytes.len() > MATCH3D_LEGACY_MODEL_MAX_BYTES {
        return Err(match3d_bad_gateway("历史模型内容为空或超过大小上限"));
    }
    if !is_match3d_glb_binary_payload(&bytes) {
        return Err(match3d_bad_gateway("历史模型下载结果不是有效 GLB 模型文件"));
    }

    Ok(Match3DDownloadedModel {
        bytes: bytes.to_vec(),
        file_name: normalize_match3d_model_file_name(file.name.as_str()),
        content_type: normalize_match3d_model_content_type(content_type.as_str()),
    })
}

fn is_match3d_downloaded_model_payload(file_name: &str, content_type: &str) -> bool {
    let normalized_file_name = file_name.to_ascii_lowercase();
    let normalized_content_type = content_type
        .split(';')
        .next()
        .unwrap_or(content_type)
        .trim()
        .to_ascii_lowercase();
    normalized_file_name.ends_with(".glb")
        || matches!(
            normalized_content_type.as_str(),
            "model/gltf-binary" | "application/octet-stream"
        )
}

fn normalize_match3d_model_file_name(raw: &str) -> String {
    let trimmed = raw.trim().rsplit('/').next().unwrap_or(raw).trim();
    let without_query = trimmed.split('?').next().unwrap_or(trimmed).trim();
    let normalized = without_query.to_ascii_lowercase();
    let stem = without_query
        .strip_suffix(".glb")
        .or_else(|| {
            normalized
                .strip_suffix(".glb")
                .map(|_| &without_query[..without_query.len().saturating_sub(4)])
        })
        .unwrap_or(without_query);
    let sanitized_stem = sanitize_match3d_asset_segment(stem, "model");
    format!("{sanitized_stem}.glb")
}

fn normalize_match3d_model_content_type(raw: &str) -> String {
    let normalized = raw.split(';').next().unwrap_or(raw).trim().to_lowercase();
    if normalized == "model/gltf-binary" {
        return normalized;
    }
    "model/gltf-binary".to_string()
}

fn is_match3d_glb_binary_payload(bytes: &[u8]) -> bool {
    if bytes.len() < 12 {
        return false;
    }

    let magic = u32::from_le_bytes([bytes[0], bytes[1], bytes[2], bytes[3]]);
    let version = u32::from_le_bytes([bytes[4], bytes[5], bytes[6], bytes[7]]);
    let declared_length = u32::from_le_bytes([bytes[8], bytes[9], bytes[10], bytes[11]]) as usize;
    magic == 0x4654_6c67 && version == 2 && declared_length == bytes.len()
}

async fn read_match3d_generated_object_bytes(
    state: &AppState,
    object_key: &str,
    message_prefix: &str,
    max_size_bytes: usize,
) -> Result<Vec<u8>, AppError> {
    let object_key = object_key.trim().trim_start_matches('/');
    if object_key.is_empty() {
        return Err(
            AppError::from_status(StatusCode::BAD_REQUEST).with_details(json!({
                "provider": "match3d-assets",
                "message": format!("{message_prefix}：objectKey 不能为空"),
            })),
        );
    }
    let oss_client = state.oss_client().ok_or_else(|| {
        AppError::from_status(StatusCode::SERVICE_UNAVAILABLE).with_details(json!({
            "provider": "aliyun-oss",
            "reason": "OSS 未完成环境变量配置",
        }))
    })?;
    let signed = oss_client
        .sign_get_object_url(platform_oss::OssSignedGetObjectUrlRequest {
            object_key: object_key.to_string(),
            expire_seconds: Some(300),
        })
        .map_err(|error| map_oss_error(error, "aliyun-oss"))?;
    let response = reqwest::Client::new()
        .get(signed.signed_url.as_str())
        .send()
        .await
        .map_err(|error| match3d_bad_gateway(format!("{message_prefix}：{error}")))?;
    let status = response.status();
    if !status.is_success() {
        return Err(match3d_bad_gateway(format!(
            "{message_prefix}：HTTP {}",
            status.as_u16()
        )));
    }
    let bytes = response
        .bytes()
        .await
        .map_err(|error| match3d_bad_gateway(format!("{message_prefix}：{error}")))?;
    if bytes.is_empty() || bytes.len() > max_size_bytes {
        return Err(match3d_bad_gateway(format!(
            "{message_prefix}：内容为空或超过大小上限"
        )));
    }
    Ok(bytes.to_vec())
}

async fn resolve_match3d_reference_image_data_url(
    state: &AppState,
    source: Option<&str>,
    max_size_bytes: usize,
) -> Result<Option<String>, AppError> {
    let Some(source) = source.map(str::trim).filter(|value| !value.is_empty()) else {
        return Ok(None);
    };
    if source.starts_with("data:image/") {
        return Ok(Some(source.to_string()));
    }
    if !source.trim_start_matches('/').starts_with("generated-") {
        return Ok(Some(source.to_string()));
    }
    let bytes = read_match3d_generated_object_bytes(
        state,
        source,
        "读取抓大鹅参考图失败",
        max_size_bytes,
    )
    .await?;
    Ok(Some(format!(
        "data:{};base64,{}",
        infer_match3d_image_mime_type(bytes.as_slice()),
        BASE64_STANDARD.encode(bytes)
    )))
}

fn infer_match3d_image_mime_type(bytes: &[u8]) -> &'static str {
    if bytes.starts_with(b"\x89PNG\r\n\x1a\n") {
        return "image/png";
    }
    if bytes.starts_with(&[0xff, 0xd8, 0xff]) {
        return "image/jpeg";
    }
    if bytes.starts_with(b"RIFF") && bytes.get(8..12) == Some(b"WEBP") {
        return "image/webp";
    }
    "image/png"
}

fn build_match3d_material_sheet_prompt(
    config: &Match3DConfigJson,
    item_names: &[String],
) -> String {
    let asset_style_prompt = resolve_match3d_asset_style_prompt(config);
    let style_clause = asset_style_prompt
        .as_ref()
        .map(|prompt| format!("整体画风遵循：{prompt}。"))
        .unwrap_or_default();
    let item_rows = item_names
        .iter()
        .enumerate()
        .map(|(index, name)| format!("第{}行：{name} 的 5 个不同视角", index + 1))
        .collect::<Vec<_>>()
        .join("；");
    format!(
        "生成一张1024x1024的1:1图片。生成{grid}*{grid}网格素材图，画面是{theme}题材的抓大鹅游戏2D物品素材。{style_clause}严格按行组织：{item_rows}。同一行五格必须是同一物品的五个不同视角，依次为正面、左前、右前、俯视、背面；每个格子一个独立居中的完整物体，白色或透明感干净背景，统一柔和光照，清晰轮廓，适合直接切割成游戏2D图标。不要出现文字、水印、UI、边框、网格线、标签、底座、场景或其他物体。",
        grid = MATCH3D_MATERIAL_GRID_SIZE,
        theme = config.theme_text,
        style_clause = style_clause,
        item_rows = item_rows,
    )
}

fn resolve_match3d_asset_style_prompt(config: &Match3DConfigJson) -> Option<String> {
    config
        .asset_style_prompt
        .as_deref()
        .or(config.asset_style_label.as_deref())
        .map(str::trim)
        .filter(|value| !value.is_empty())
        .map(str::to_string)
}

fn slice_match3d_material_sheet(
    image: &DownloadedOpenAiImage,
    item_names: &[String],
) -> Result<Vec<Vec<Match3DSlicedItemImage>>, AppError> {
    // 中文注释：每张 1K 素材图固定按 5x5 切割；一行对应一个物品的五个视角。
    let source = image::load_from_memory(image.bytes.as_slice()).map_err(|error| {
        AppError::from_status(StatusCode::BAD_GATEWAY).with_details(json!({
            "provider": "match3d-assets",
            "message": format!("抓大鹅素材图解码失败：{error}"),
        }))
    })?;
    let (width, height) = source.dimensions();
    let cell_width = width / MATCH3D_MATERIAL_GRID_SIZE;
    let cell_height = height / MATCH3D_MATERIAL_GRID_SIZE;
    if cell_width == 0 || cell_height == 0 {
        return Err(
            AppError::from_status(StatusCode::BAD_GATEWAY).with_details(json!({
                "provider": "match3d-assets",
                "message": "抓大鹅素材图尺寸过小，无法切割",
            })),
        );
    }

    let mut slices = Vec::with_capacity(item_names.len());
    for item_index in 0..item_names.len().min(MATCH3D_MATERIAL_ITEM_BATCH_SIZE) {
        let row = item_index as u32;
        let mut views = Vec::with_capacity(MATCH3D_ITEM_VIEW_COUNT);
        for view_index in 0..MATCH3D_ITEM_VIEW_COUNT {
            let col = view_index as u32;
            let cropped =
                source.crop_imm(col * cell_width, row * cell_height, cell_width, cell_height);
            let mut cursor = std::io::Cursor::new(Vec::new());
            cropped
                .write_to(&mut cursor, ImageFormat::Png)
                .map_err(|error| {
                    AppError::from_status(StatusCode::BAD_GATEWAY).with_details(json!({
                        "provider": "match3d-assets",
                        "message": format!("抓大鹅素材图切割失败：{error}"),
                    }))
                })?;
            views.push(Match3DSlicedItemImage {
                bytes: cursor.into_inner(),
            });
        }
        slices.push(views);
    }

    Ok(slices)
}

#[allow(clippy::too_many_arguments)]
async fn persist_match3d_generated_bytes(
    state: &AppState,
    owner_user_id: &str,
    session_id: &str,
    profile_id: &str,
    path_segments: &[&str],
    file_name: &str,
    content_type: &str,
    bytes: Vec<u8>,
    asset_kind: &str,
    source_job_id: Option<&str>,
    generated_at_micros: i64,
) -> Result<Match3DAssetUpload, AppError> {
    let oss_client = state.oss_client().ok_or_else(|| {
        AppError::from_status(StatusCode::SERVICE_UNAVAILABLE).with_details(json!({
            "provider": "aliyun-oss",
            "reason": "OSS 未完成环境变量配置",
        }))
    })?;
    let mut metadata = BTreeMap::new();
    metadata.insert("x-oss-meta-asset-kind".to_string(), asset_kind.to_string());
    metadata.insert(
        "x-oss-meta-owner-user-id".to_string(),
        owner_user_id.to_string(),
    );
    metadata.insert("x-oss-meta-profile-id".to_string(), profile_id.to_string());
    if let Some(source_job_id) = source_job_id.filter(|value| !value.trim().is_empty()) {
        metadata.insert(
            "x-oss-meta-source-job-id".to_string(),
            source_job_id.to_string(),
        );
    }

    let oss_http_client = reqwest::Client::builder()
        .timeout(Duration::from_millis(MATCH3D_OSS_PUT_TIMEOUT_MS))
        .build()
        .map_err(|error| match3d_bad_gateway(format!("构造抓大鹅 OSS 上传客户端失败：{error}")))?;
    let put_result = oss_client
        .put_object(
            &oss_http_client,
            OssPutObjectRequest {
                prefix: LegacyAssetPrefix::Match3DAssets,
                path_segments: std::iter::once(session_id)
                    .chain(std::iter::once(profile_id))
                    .chain(path_segments.iter().copied())
                    .map(|segment| sanitize_match3d_asset_segment(segment, "asset"))
                    .collect(),
                file_name: file_name.to_string(),
                content_type: Some(content_type.to_string()),
                access: OssObjectAccess::Private,
                metadata,
                body: bytes,
            },
        )
        .await
        .map_err(|error| map_oss_error(error, "aliyun-oss"))?;

    let _ = generated_at_micros;
    Ok(Match3DAssetUpload {
        src: put_result.legacy_public_path,
        object_key: put_result.object_key,
    })
}

fn sanitize_match3d_asset_segment(raw: &str, fallback: &str) -> String {
    let normalized = raw
        .trim()
        .chars()
        .map(|ch| {
            if ch.is_ascii_alphanumeric() || ch == '-' || ch == '_' {
                ch.to_ascii_lowercase()
            } else {
                '-'
            }
        })
        .collect::<String>();
    let collapsed = normalized
        .split('-')
        .filter(|part| !part.is_empty())
        .collect::<Vec<_>>()
        .join("-");
    if collapsed.is_empty() {
        fallback.to_string()
    } else {
        collapsed.chars().take(64).collect()
    }
}

fn normalize_match3d_run_status(value: &str) -> &str {
    match value {
        "Running" => "running",
        "Won" => "won",
        "Failed" => "failed",
        "Stopped" => "stopped",
        _ => value,
    }
}

fn normalize_match3d_item_state(value: &str) -> &str {
    match value {
        "InBoard" => "in_board",
        "InTray" => "in_tray",
        "Cleared" => "cleared",
        _ => value,
    }
}

fn normalize_match3d_failure_reason(value: &str) -> &str {
    match value {
        "TimeUp" => "time_up",
        "TrayFull" => "tray_full",
        _ => value,
    }
}

fn normalize_match3d_click_reject_reason(value: &str) -> &str {
    match value {
        "RejectedNotClickable" => "item_not_clickable",
        "RejectedAlreadyMoved" => "item_not_in_board",
        "RejectedTrayFull" => "tray_full",
        "VersionConflict" => "snapshot_version_mismatch",
        "RunFinished" => "run_not_active",
        _ => value,
    }
}

fn ensure_non_empty(
    request_context: &RequestContext,
    provider: &str,
    value: &str,
    field_name: &str,
) -> Result<(), Response> {
    if value.trim().is_empty() {
        return Err(match3d_bad_request(
            request_context,
            provider,
            format!("{field_name} is required").as_str(),
        ));
    }
    Ok(())
}

fn match3d_json<T>(
    payload: Result<Json<T>, JsonRejection>,
    request_context: &RequestContext,
    provider: &str,
) -> Result<Json<T>, Response> {
    payload.map_err(|error| {
        match3d_error_response(
            request_context,
            provider,
            AppError::from_status(StatusCode::BAD_REQUEST).with_details(json!({
                "provider": provider,
                "message": error.body_text(),
            })),
        )
    })
}

fn match3d_bad_request(
    request_context: &RequestContext,
    provider: &str,
    message: &str,
) -> Response {
    match3d_error_response(
        request_context,
        provider,
        AppError::from_status(StatusCode::BAD_REQUEST).with_details(json!({
            "provider": provider,
            "message": message,
        })),
    )
}

fn map_match3d_client_error(error: SpacetimeClientError) -> AppError {
    let status = match &error {
        SpacetimeClientError::Runtime(_) => StatusCode::BAD_REQUEST,
        SpacetimeClientError::Procedure(message)
            if message.contains("不存在")
                || message.contains("not found")
                || message.contains("does not exist") =>
        {
            StatusCode::NOT_FOUND
        }
        SpacetimeClientError::Procedure(message)
            if message.contains("发布需要")
                || message.contains("不能为空")
                || message.contains("必须") =>
        {
            StatusCode::BAD_REQUEST
        }
        _ => StatusCode::BAD_GATEWAY,
    };

    AppError::from_status(status).with_details(json!({
        "provider": "spacetimedb",
        "message": error.to_string(),
    }))
}

fn match3d_error_response(
    request_context: &RequestContext,
    provider: &str,
    error: AppError,
) -> Response {
    let mut response = error.into_response_with_context(Some(request_context));
    response.headers_mut().insert(
        HeaderName::from_static("x-genarrative-provider"),
        header::HeaderValue::from_str(provider)
            .unwrap_or_else(|_| header::HeaderValue::from_static("match3d")),
    );
    response
}

fn match3d_sse_json_event(event_name: &str, payload: Value) -> Result<Event, AppError> {
    Event::default()
        .event(event_name)
        .json_data(payload)
        .map_err(|error| {
            AppError::from_status(StatusCode::INTERNAL_SERVER_ERROR).with_details(json!({
                "provider": "sse",
                "message": format!("SSE payload 序列化失败：{error}"),
            }))
        })
}

fn match3d_sse_json_event_or_error(event_name: &str, payload: Value) -> Event {
    match match3d_sse_json_event(event_name, payload) {
        Ok(event) => event,
        Err(error) => Event::default().event("error").data(format!("{error:?}")),
    }
}

fn current_utc_micros() -> i64 {
    let duration = SystemTime::now()
        .duration_since(UNIX_EPOCH)
        .unwrap_or_default();
    (duration.as_secs() as i64) * 1_000_000 + i64::from(duration.subsec_micros())
}

fn current_utc_ms() -> i64 {
    current_utc_micros().saturating_div(1000)
}

#[cfg(test)]
mod tests {
    use super::*;

    fn config(theme_text: &str, clear_count: u32, difficulty: u32) -> Match3DConfigJson {
        Match3DConfigJson {
            theme_text: theme_text.to_string(),
            reference_image_src: None,
            clear_count,
            difficulty,
            asset_style_id: None,
            asset_style_label: None,
            asset_style_prompt: None,
            generate_click_sound: false,
        }
    }

    #[test]
    fn match3d_agent_reply_asks_three_questions_before_confirmation() {
        let current = config("水果", 4, 6);

        assert_eq!(
            build_match3d_assistant_reply_for_turn(&current, 0),
            MATCH3D_QUESTION_THEME
        );
        assert_eq!(
            build_match3d_assistant_reply_for_turn(&current, 1),
            MATCH3D_QUESTION_CLEAR_COUNT
        );
        assert_eq!(
            build_match3d_assistant_reply_for_turn(&current, 2),
            MATCH3D_QUESTION_DIFFICULTY
        );
        assert_eq!(
            build_match3d_assistant_reply_for_turn(&current, 3),
            "已确认：水果题材，需要消除 4 次，共 12 件物品，难度 6。"
        );
    }

    #[test]
    fn match3d_agent_progress_follows_question_turns() {
        assert_eq!(resolve_progress_percent_for_turn(0), 0);
        assert_eq!(resolve_progress_percent_for_turn(1), 33);
        assert_eq!(resolve_progress_percent_for_turn(2), 66);
        assert_eq!(resolve_progress_percent_for_turn(3), 100);
        assert_eq!(resolve_progress_percent_for_turn(8), 100);
    }

    #[test]
    fn match3d_anchor_pack_masks_uncollected_default_values() {
        let pack = Match3DAnchorPackRecord {
            theme: Match3DAnchorItemRecord {
                key: "theme".to_string(),
                label: "题材主题".to_string(),
                value: "缤纷玩具".to_string(),
                status: "confirmed".to_string(),
            },
            clear_count: Match3DAnchorItemRecord {
                key: "clearCount".to_string(),
                label: "需要消除次数".to_string(),
                value: "12".to_string(),
                status: "confirmed".to_string(),
            },
            difficulty: Match3DAnchorItemRecord {
                key: "difficulty".to_string(),
                label: "难度".to_string(),
                value: "4".to_string(),
                status: "confirmed".to_string(),
            },
        };

        let response = map_match3d_anchor_pack_response_for_turn(pack, 0, "Collecting");

        assert_eq!(response.theme.value, "");
        assert_eq!(response.theme.status, "missing");
        assert_eq!(response.clear_count.value, "");
        assert_eq!(response.clear_count.status, "missing");
        assert_eq!(response.difficulty.value, "");
        assert_eq!(response.difficulty.status, "missing");
    }

    #[test]
    fn match3d_item_image_path_segments_stay_unique_for_chinese_names() {
        let item_names = ["草莓", "苹果", "香蕉"];
        let slugs = item_names
            .iter()
            .enumerate()
            .map(|(index, item_name)| {
                let item_id = format!("match3d-item-{}", index + 1);
                format!(
                    "{item_id}-{}",
                    sanitize_match3d_asset_segment(item_name, "item")
                )
            })
            .collect::<Vec<_>>();

        assert_eq!(
            slugs,
            vec![
                "match3d-item-1-item",
                "match3d-item-2-item",
                "match3d-item-3-item",
            ]
        );
    }

    #[test]
    fn match3d_work_metadata_parses_gpt4o_json() {
        let metadata = parse_match3d_work_metadata(
            r#"{"gameName":"果园大鹅宴","tags":["水果","抓大鹅","经典消除","轻量休闲"],"backgroundMusic":{"title":"果园轻舞","style":"轻快, 休闲","prompt":"果园主题循环背景音乐"},"backgroundPrompt":"果园主题绿色锅状背景图","items":[{"name":"草莓","soundPrompt":"草莓点击音效"},{"name":"苹果","soundPrompt":"苹果点击音效"},{"name":"香蕉","soundPrompt":"香蕉点击音效"}]}"#,
        )
        .expect("metadata should parse");

        assert_eq!(metadata.game_name, "果园大鹅宴");
        assert_eq!(
            metadata.tags,
            vec!["水果", "抓大鹅", "经典消除", "轻量休闲", "2D素材", "收集"]
        );
    }

    #[test]
    fn match3d_work_metadata_fallback_keeps_empty_description_boundary() {
        let metadata = fallback_match3d_work_metadata("水果");

        assert_eq!(metadata.game_name, "水果抓大鹅");
        assert!(metadata.tags.contains(&"水果".to_string()));
        assert!(metadata.tags.contains(&"抓大鹅".to_string()));
    }

    #[test]
    fn match3d_draft_plan_parses_audio_prompts() {
        let plan = parse_match3d_draft_plan(
            r#"{"gameName":"果园大鹅宴","tags":["水果","抓大鹅"],"backgroundMusic":{"title":"果园轻舞","style":"轻快, 休闲","prompt":""},"backgroundPrompt":"果园主题抓大鹅竖屏背景，绿色渐变和浅锅圆盘融合","items":[{"name":"草莓","soundPrompt":"草莓点击消除的清脆音效"},{"name":"苹果","soundPrompt":"苹果落入托盘的弹跳音"},{"name":"香蕉","soundPrompt":"香蕉消除时的轻快提示音"}]}"#,
            &config("水果", 3, 3),
        )
        .expect("draft plan should parse");

        assert_eq!(plan.metadata.game_name, "果园大鹅宴");
        assert_eq!(plan.background_music.title, "果园轻舞");
        assert!(plan.background_music.prompt.is_empty());
        assert!(plan.background_prompt.contains("浅锅"));
        assert_eq!(plan.items[0].name, "草莓");
        assert!(plan.items[0].sound_prompt.contains("草莓"));
    }

    #[test]
    fn match3d_tag_normalization_only_strips_numbered_list_prefix() {
        assert_eq!(normalize_match3d_tag("3D素材"), "3D素材");
        assert_eq!(normalize_match3d_tag("1. 3D素材"), "3D素材");
        assert_eq!(normalize_match3d_tag("2、轻量休闲"), "轻量休闲");
    }

    #[test]
    fn match3d_model_download_metadata_normalizes_to_glb() {
        assert_eq!(
            normalize_match3d_model_file_name("https://example.com/Fruit Model.GLB?token=1"),
            "fruit-model.glb"
        );
        assert_eq!(normalize_match3d_model_file_name("模型文件"), "model.glb");
        assert_eq!(
            normalize_match3d_model_content_type("application/octet-stream"),
            "model/gltf-binary"
        );
        assert_eq!(
            normalize_match3d_model_content_type("model/gltf-binary; charset=utf-8"),
            "model/gltf-binary"
        );
    }

    #[test]
    fn match3d_model_download_requires_valid_glb_header() {
        let mut glb = Vec::new();
        glb.extend_from_slice(&0x4654_6c67_u32.to_le_bytes());
        glb.extend_from_slice(&2_u32.to_le_bytes());
        glb.extend_from_slice(&12_u32.to_le_bytes());

        assert!(is_match3d_glb_binary_payload(&glb));
        assert!(!is_match3d_glb_binary_payload(b"<html>expired</html>"));

        let mut wrong_length = glb.clone();
        wrong_length[8..12].copy_from_slice(&16_u32.to_le_bytes());
        assert!(!is_match3d_glb_binary_payload(&wrong_length));
    }

    #[test]
    fn match3d_generated_asset_resume_keeps_stable_item_order() {
        let assets = normalize_match3d_generated_item_assets_for_resume(vec![
            Match3DGeneratedItemAsset {
                item_id: "match3d-item-2".to_string(),
                item_name: "苹果".to_string(),
                image_src: Some("/generated-match3d-assets/s/p/items/i2/image.png".to_string()),
                image_object_key: Some(
                    "generated-match3d-assets/s/p/items/i2/image.png".to_string(),
                ),
                image_views: Vec::new(),
                model_src: Some(
                    "/generated-match3d-assets/s/p/items/i2/model/model.glb".to_string(),
                ),
                model_object_key: Some(
                    "generated-match3d-assets/s/p/items/i2/model/model.glb".to_string(),
                ),
                model_file_name: Some("model.glb".to_string()),
                task_uuid: Some("task-2".to_string()),
                subscription_key: Some("sub-2".to_string()),
                sound_prompt: None,
                background_music_title: None,
                background_music_style: None,
                background_music_prompt: None,
                background_music: None,
                click_sound: None,
                background_asset: None,
                status: "model_ready".to_string(),
                error: None,
            },
            Match3DGeneratedItemAsset {
                item_id: "match3d-item-1".to_string(),
                item_name: "草莓".to_string(),
                image_src: Some("/generated-match3d-assets/s/p/items/i1/image.png".to_string()),
                image_object_key: Some(
                    "generated-match3d-assets/s/p/items/i1/image.png".to_string(),
                ),
                image_views: Vec::new(),
                model_src: None,
                model_object_key: None,
                model_file_name: None,
                task_uuid: None,
                subscription_key: None,
                sound_prompt: None,
                background_music_title: None,
                background_music_style: None,
                background_music_prompt: None,
                background_music: None,
                click_sound: None,
                background_asset: None,
                status: "image_ready".to_string(),
                error: None,
            },
        ]);

        assert_eq!(assets[0].item_id, "match3d-item-1");
        assert_eq!(assets[1].item_id, "match3d-item-2");
    }

    #[test]
    fn match3d_required_item_images_require_five_views() {
        let assets = vec![
            Match3DGeneratedItemAsset {
                item_id: "match3d-item-1".to_string(),
                item_name: "草莓".to_string(),
                image_src: Some("/generated-match3d-assets/s/p/items/i1/image.png".to_string()),
                image_object_key: Some(
                    "generated-match3d-assets/s/p/items/i1/image.png".to_string(),
                ),
                image_views: Vec::new(),
                model_src: None,
                model_object_key: None,
                model_file_name: None,
                task_uuid: None,
                subscription_key: None,
                sound_prompt: None,
                background_music_title: None,
                background_music_style: None,
                background_music_prompt: None,
                background_music: None,
                click_sound: None,
                background_asset: None,
                status: "image_ready".to_string(),
                error: None,
            },
            Match3DGeneratedItemAsset {
                item_id: "match3d-item-2".to_string(),
                item_name: "苹果".to_string(),
                image_src: Some("/generated-match3d-assets/s/p/items/i2/image.png".to_string()),
                image_object_key: Some(
                    "generated-match3d-assets/s/p/items/i2/image.png".to_string(),
                ),
                image_views: Vec::new(),
                model_src: None,
                model_object_key: None,
                model_file_name: None,
                task_uuid: None,
                subscription_key: None,
                sound_prompt: None,
                background_music_title: None,
                background_music_style: None,
                background_music_prompt: None,
                background_music: None,
                click_sound: None,
                background_asset: None,
                status: "image_ready".to_string(),
                error: None,
            },
            Match3DGeneratedItemAsset {
                item_id: "match3d-item-3".to_string(),
                item_name: "香蕉".to_string(),
                image_src: Some("/generated-match3d-assets/s/p/items/i3/image.png".to_string()),
                image_object_key: None,
                image_views: Vec::new(),
                model_src: None,
                model_object_key: None,
                model_file_name: None,
                task_uuid: None,
                subscription_key: None,
                sound_prompt: None,
                background_music_title: None,
                background_music_style: None,
                background_music_prompt: None,
                background_music: None,
                click_sound: None,
                background_asset: None,
                status: "image_ready".to_string(),
                error: None,
            },
        ];

        assert!(!has_match3d_required_item_images(&assets, 3));

        let five_view_assets = (1..=3)
            .map(|index| Match3DGeneratedItemAsset {
                item_id: format!("match3d-item-{index}"),
                item_name: format!("物品{index}"),
                image_src: Some(format!(
                    "/generated-match3d-assets/s/p/items/i{index}/views/view-01.png"
                )),
                image_object_key: Some(format!(
                    "generated-match3d-assets/s/p/items/i{index}/views/view-01.png"
                )),
                image_views: (1..=MATCH3D_ITEM_VIEW_COUNT)
                    .map(|view_index| Match3DGeneratedItemImageView {
                        view_id: format!("view-{view_index:02}"),
                        view_index: view_index as u32,
                        image_src: Some(format!(
                            "/generated-match3d-assets/s/p/items/i{index}/views/view-{view_index:02}.png"
                        )),
                        image_object_key: Some(format!(
                            "generated-match3d-assets/s/p/items/i{index}/views/view-{view_index:02}.png"
                        )),
                    })
                    .collect(),
                model_src: None,
                model_object_key: None,
                model_file_name: None,
                task_uuid: None,
                subscription_key: None,
                sound_prompt: None,
                background_music_title: None,
                background_music_style: None,
                background_music_prompt: None,
                background_music: None,
                click_sound: None,
                background_asset: None,
                status: "image_ready".to_string(),
                error: None,
            })
            .collect::<Vec<_>>();

        assert!(has_match3d_required_item_images(&five_view_assets, 3));
    }

    #[test]
    fn match3d_work_summary_maps_persisted_generated_item_assets() {
        let response = map_match3d_work_summary_response(Match3DWorkProfileRecord {
            work_id: "match3d-profile-1".to_string(),
            profile_id: "match3d-profile-1".to_string(),
            owner_user_id: "user-1".to_string(),
            source_session_id: Some("match3d-session-1".to_string()),
            author_display_name: "玩家".to_string(),
            game_name: "水果抓大鹅".to_string(),
            theme_text: "水果".to_string(),
            summary: "水果主题".to_string(),
            tags: vec!["水果".to_string()],
            cover_image_src: None,
            cover_asset_id: None,
            reference_image_src: None,
            clear_count: 3,
            difficulty: 3,
            publication_status: "draft".to_string(),
            play_count: 0,
            updated_at: "2026-05-10T00:00:00.000Z".to_string(),
            published_at: None,
            publish_ready: false,
            generated_item_assets_json: Some(
                r#"[{"itemId":"match3d-item-1","itemName":"草莓","imageSrc":"/generated-match3d-assets/session/profile/items/match3d-item-1-item/image.png","imageObjectKey":"generated-match3d-assets/session/profile/items/match3d-item-1-item/image.png","status":"image_ready"}]"#
                    .to_string(),
            ),
        });

        assert_eq!(response.generated_item_assets.len(), 1);
        assert_eq!(response.generated_item_assets[0].item_name, "草莓");
        assert_eq!(response.generated_item_assets[0].status, "image_ready");
        assert_eq!(
            response.generated_item_assets[0].image_src.as_deref(),
            Some("/generated-match3d-assets/session/profile/items/match3d-item-1-item/image.png")
        );
    }
}