use axum::{
    Json,
    extract::{Extension, Path, Query, State, rejection::JsonRejection},
    http::{HeaderMap, HeaderValue, StatusCode, header::CONTENT_TYPE},
    response::{IntoResponse, Response},
};
use serde::de::DeserializeOwned;
use serde::{Deserialize, Serialize};
use serde_json::{Value, json};
use shared_contracts::assets::EditorCanvasGenerationCompletionPayload;
use shared_contracts::external_generation::{
    ExternalEditorGenerationJobResponse, ExternalEditorGenerationSubmissionResponse,
    ExternalGenerationJobStatus,
};
use shared_kernel::build_prefixed_uuid_id;
use spacetime_client::{
    EditorAssetCreateRecordInput, EditorAssetDeleteRecordInput, EditorAssetFolderCreateRecordInput,
    EditorAssetFolderDeleteRecordInput, EditorAssetFolderUpdateRecordInput,
    EditorAssetUpdateRecordInput, EditorProjectCreateRecordInput, EditorProjectDeleteRecordInput,
    EditorProjectGetRecordInput, EditorProjectRecord, EditorProjectRenameRecordInput,
    EditorProjectResourceCreateRecordInput, ExternalGenerationJobGetRecordInput,
    ExternalGenerationJobRecord, SpacetimeClientError,
};

use crate::editor_project_icon::{
    EditorIconSpritesheetGenerationRequest, enqueue_editor_icon_spritesheet_generation_for_owner,
};
use crate::{
    api_response::json_success_body,
    character_animation_assets::{
        enqueue_editor_character_animation_for_owner, enqueue_editor_video_generation_for_owner,
    },
    editor_generation_queue::editor_generation_queue_state,
    editor_project::{
        EDITOR_ASSET_FOLDER_ID_PREFIX, EDITOR_ASSET_ID_PREFIX, EDITOR_PROJECT_DEFAULT_TITLE,
        EDITOR_PROJECT_ID_PREFIX, EDITOR_RESOURCE_ID_PREFIX, EditorAssetFolderPayload,
        EditorAssetLibraryPayload, EditorAssetPayload, EditorBackgroundRemovalRequest,
        EditorCanvasViewportPayload, EditorGenerationCaller, EditorImageEditRequest,
        EditorImageGenerationRequest, EditorProjectPayload, EditorProjectResourcePayload,
        EditorUiDesignAssetExtractionRequest, current_utc_micros,
        editor_asset_folder_payload_from_record, editor_asset_library_payload_from_record,
        editor_asset_payload_from_record, editor_idempotent_create_id,
        editor_project_payload_from_record, editor_project_resource_payload_from_record,
        enqueue_editor_background_removal_for_owner, enqueue_editor_image_edit_for_owner,
        enqueue_editor_image_generation_for_owner,
        enqueue_editor_ui_design_asset_extraction_for_owner,
        ensure_generic_editor_image_generation_contract, map_editor_project_error,
        normalize_editor_persisted_media_src, normalize_optional_string,
        optional_editor_idempotency_key, parse_editor_generation_json_payload,
        sanitize_editor_untrusted_generation_inputs,
        save_editor_project_layout_with_revision_and_get, serialize_editor_generation_inputs,
    },
    external_api_auth::ExternalApiPrincipal,
    external_generation::map_external_generation_job_status_detail,
    http_error::AppError,
    request_context::RequestContext,
    state::AppState,
    vector_engine_audio_generation::{
        enqueue_editor_background_music_generation_for_owner,
        enqueue_editor_sound_effect_generation_for_owner,
    },
};
use std::num::NonZeroU64;

const EXTERNAL_EDITOR_PROVIDER: &str = "external-editor-api";
const SCOPE_EDITOR_PROJECT: &str = "editor:project";
const SCOPE_EDITOR_CANVAS: &str = "editor:canvas";
const SCOPE_EDITOR_IMAGE_GENERATE: &str = "editor:image-generate";
const SCOPE_EDITOR_ASSET: &str = "editor:asset";
const OPENAPI_JSON: &str =
    include_str!("../../../../docs/openapi/genarrative-external-v1.openapi.json");
const EXTERNAL_GENERATION_POLL_AFTER_MS: u64 = 1_500;
const IDEMPOTENCY_KEY_HEADER: &str = "idempotency-key";
const PROJECT_COVER_SNAPSHOT_ASSET_KIND: &str = "project-cover-snapshot";

#[derive(Clone, Copy, Debug, Default, Deserialize, PartialEq, Eq)]
#[serde(rename_all = "lowercase")]
enum ExternalEditorProjectListView {
    #[default]
    Full,
    Summary,
}

#[derive(Debug, Default, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct ExternalEditorProjectListQuery {
    #[serde(default)]
    view: ExternalEditorProjectListView,
}

#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct ExternalEditorProjectCreateRequest {
    title: Option<String>,
}

#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct ExternalEditorCanvasSaveRequest {
    viewport: EditorCanvasViewportPayload,
    layers: Value,
    expected_revision: u64,
}

#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct ExternalEditorProjectRenameRequest {
    title: String,
}

#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct ExternalEditorAssetFolderCreateRequest {
    label: String,
    sort_order: Option<u32>,
}

#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct ExternalEditorAssetFolderUpdateRequest {
    label: Option<String>,
    collapsed: Option<bool>,
}

#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct ExternalEditorAssetCreateRequest {
    folder_id: String,
    label: String,
    image_src: String,
    object_key: Option<String>,
    asset_object_id: Option<String>,
    width: u32,
    height: u32,
    source_type: String,
    prompt: Option<String>,
    actual_prompt: Option<String>,
    model: Option<String>,
    provider: Option<String>,
    task_id: Option<String>,
    asset_kind: Option<String>,
    generation_inputs: Option<Value>,
    image_sequence_frames: Option<Value>,
    image_sequence_duration_ms: Option<NonZeroU64>,
}

#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct ExternalEditorProjectResourceCreateRequest {
    image_src: String,
    object_key: Option<String>,
    asset_object_id: Option<String>,
    width: u32,
    height: u32,
    source_type: String,
    prompt: Option<String>,
    actual_prompt: Option<String>,
    model: Option<String>,
    provider: Option<String>,
    task_id: Option<String>,
    source_resource_id: Option<String>,
    asset_kind: Option<String>,
    generation_inputs: Option<Value>,
    image_sequence_frames: Option<Value>,
    image_sequence_duration_ms: Option<NonZeroU64>,
}

#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase", deny_unknown_fields)]
pub(crate) struct ExternalEditorBackgroundRemovalRequest {
    source_image_src: String,
    project_id: Option<String>,
    target_layer_id: Option<String>,
    asset_kind: Option<String>,
    generation_inputs: Option<Value>,
    asset_folder_id: Option<String>,
    asset_label: Option<String>,
    source_resource_id: Option<String>,
    canvas_completion: Option<EditorCanvasGenerationCompletionPayload>,
}

impl From<ExternalEditorBackgroundRemovalRequest> for EditorBackgroundRemovalRequest {
    fn from(payload: ExternalEditorBackgroundRemovalRequest) -> Self {
        Self {
            source_image_src: payload.source_image_src,
            project_id: payload.project_id,
            target_layer_id: payload.target_layer_id,
            asset_kind: payload.asset_kind,
            generation_inputs: payload.generation_inputs,
            asset_folder_id: payload.asset_folder_id,
            asset_label: payload.asset_label,
            source_resource_id: payload.source_resource_id,
            task_id: None,
            canvas_completion: payload.canvas_completion,
        }
    }
}

#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct ExternalEditorAssetUpdateRequest {
    label: Option<String>,
    folder_id: Option<String>,
}

#[derive(Debug, Serialize)]
#[serde(rename_all = "camelCase")]
pub struct ExternalEditorProjectResponse {
    project: EditorProjectPayload,
}

#[derive(Debug, Serialize)]
#[serde(rename_all = "camelCase")]
pub struct ExternalEditorProjectRecentResponse {
    project: Option<EditorProjectPayload>,
}

#[derive(Debug, Serialize)]
#[serde(rename_all = "camelCase")]
pub struct ExternalEditorProjectListResponse {
    projects: Vec<EditorProjectPayload>,
}

#[derive(Debug, PartialEq, Eq, Serialize)]
#[serde(rename_all = "camelCase")]
pub struct ExternalEditorProjectSummary {
    project_id: String,
    title: String,
    updated_at: String,
    cover: Option<ExternalEditorProjectCoverSummary>,
}

#[derive(Debug, PartialEq, Eq, Serialize)]
#[serde(rename_all = "camelCase")]
pub struct ExternalEditorProjectCoverSummary {
    resource_id: String,
    object_key: String,
    width: u32,
    height: u32,
    updated_at: String,
}

#[derive(Debug, Serialize)]
#[serde(rename_all = "camelCase")]
pub struct ExternalEditorProjectSummaryListResponse {
    projects: Vec<ExternalEditorProjectSummary>,
}

#[derive(Debug, Serialize)]
#[serde(rename_all = "camelCase")]
pub struct ExternalEditorProjectDeleteResponse {
    deleted_project_id: String,
}

#[derive(Debug, Serialize)]
#[serde(rename_all = "camelCase")]
pub struct ExternalEditorAssetLibraryResponse {
    library: EditorAssetLibraryPayload,
}

#[derive(Debug, Serialize)]
#[serde(rename_all = "camelCase")]
pub struct ExternalEditorAssetFolderResponse {
    folder: EditorAssetFolderPayload,
}

#[derive(Debug, Serialize)]
#[serde(rename_all = "camelCase")]
pub struct ExternalEditorAssetFolderDeleteResponse {
    library: EditorAssetLibraryPayload,
}

#[derive(Debug, Serialize)]
#[serde(rename_all = "camelCase")]
pub struct ExternalEditorAssetResponse {
    asset: EditorAssetPayload,
}

#[derive(Debug, Serialize)]
#[serde(rename_all = "camelCase")]
pub struct ExternalEditorProjectResourceResponse {
    resource: EditorProjectResourcePayload,
}

pub async fn openapi_json() -> Response {
    (
        [(CONTENT_TYPE, "application/json; charset=utf-8")],
        OPENAPI_JSON,
    )
        .into_response()
}

pub async fn create_external_editor_project(
    State(state): State<AppState>,
    headers: HeaderMap,
    Extension(request_context): Extension<RequestContext>,
    Extension(principal): Extension<ExternalApiPrincipal>,
    Json(payload): Json<ExternalEditorProjectCreateRequest>,
) -> Result<Json<Value>, AppError> {
    require_scope(&principal, SCOPE_EDITOR_PROJECT)?;
    let owner_user_id = principal.owner_user_id().to_string();
    let project_id = optional_editor_idempotency_key(&headers)?
        .map(|key| {
            editor_idempotent_create_id(
                EDITOR_PROJECT_ID_PREFIX,
                &owner_user_id,
                "external-editor-project",
                key,
            )
        })
        .unwrap_or_else(|| build_prefixed_uuid_id(EDITOR_PROJECT_ID_PREFIX));
    let project = state
        .spacetime_client()
        .create_editor_project(EditorProjectCreateRecordInput {
            project_id,
            owner_user_id,
            title: normalize_project_title(payload.title),
            now_micros: current_utc_micros(),
        })
        .await
        .map_err(map_editor_project_error)?;

    Ok(json_success_body(
        Some(&request_context),
        ExternalEditorProjectResponse {
            project: editor_project_payload_from_record(project),
        },
    ))
}

pub async fn list_external_editor_projects(
    State(state): State<AppState>,
    Query(query): Query<ExternalEditorProjectListQuery>,
    Extension(request_context): Extension<RequestContext>,
    Extension(principal): Extension<ExternalApiPrincipal>,
) -> Result<Json<Value>, AppError> {
    require_scope(&principal, SCOPE_EDITOR_PROJECT)?;
    let projects = state
        .spacetime_client()
        .list_editor_projects(principal.owner_user_id().to_string())
        .await
        .map_err(map_editor_project_error)?;

    match query.view {
        ExternalEditorProjectListView::Full => Ok(json_success_body(
            Some(&request_context),
            ExternalEditorProjectListResponse {
                projects: projects
                    .into_iter()
                    .map(editor_project_payload_from_record)
                    .collect(),
            },
        )),
        ExternalEditorProjectListView::Summary => Ok(json_success_body(
            Some(&request_context),
            ExternalEditorProjectSummaryListResponse {
                projects: projects
                    .into_iter()
                    .map(external_editor_project_summary_from_record)
                    .collect(),
            },
        )),
    }
}

fn external_editor_project_summary_from_record(
    record: EditorProjectRecord,
) -> ExternalEditorProjectSummary {
    let cover = record
        .resources
        .iter()
        .filter_map(|resource| {
            (resource.asset_kind.as_deref() == Some(PROJECT_COVER_SNAPSHOT_ASSET_KIND))
                .then_some(resource)
                .zip(
                    resource
                        .object_key
                        .as_deref()
                        .filter(|object_key| !object_key.trim().is_empty()),
                )
        })
        .max_by(|(left, _), (right, _)| {
            left.updated_at
                .cmp(&right.updated_at)
                .then_with(|| left.resource_id.cmp(&right.resource_id))
        })
        .map(|(resource, object_key)| ExternalEditorProjectCoverSummary {
            resource_id: resource.resource_id.clone(),
            object_key: object_key.to_string(),
            width: resource.width,
            height: resource.height,
            updated_at: resource.updated_at.clone(),
        });

    ExternalEditorProjectSummary {
        project_id: record.project_id,
        title: record.title,
        updated_at: record.updated_at,
        cover,
    }
}

pub async fn load_recent_external_editor_project(
    State(state): State<AppState>,
    Extension(request_context): Extension<RequestContext>,
    Extension(principal): Extension<ExternalApiPrincipal>,
) -> Result<Json<Value>, AppError> {
    require_scope(&principal, SCOPE_EDITOR_PROJECT)?;
    let project = state
        .spacetime_client()
        .get_recent_editor_project(principal.owner_user_id().to_string())
        .await
        .map_err(map_editor_project_error)?
        .map(editor_project_payload_from_record);

    Ok(json_success_body(
        Some(&request_context),
        ExternalEditorProjectRecentResponse { project },
    ))
}

pub async fn get_external_editor_project(
    State(state): State<AppState>,
    Path(project_id): Path<String>,
    Extension(request_context): Extension<RequestContext>,
    Extension(principal): Extension<ExternalApiPrincipal>,
) -> Result<Json<Value>, AppError> {
    require_scope(&principal, SCOPE_EDITOR_PROJECT)?;
    let project = state
        .spacetime_client()
        .get_editor_project(EditorProjectGetRecordInput {
            project_id,
            owner_user_id: principal.owner_user_id().to_string(),
        })
        .await
        .map_err(map_editor_project_error)?;

    Ok(json_success_body(
        Some(&request_context),
        ExternalEditorProjectResponse {
            project: editor_project_payload_from_record(project),
        },
    ))
}

pub async fn rename_external_editor_project(
    State(state): State<AppState>,
    Path(project_id): Path<String>,
    Extension(request_context): Extension<RequestContext>,
    Extension(principal): Extension<ExternalApiPrincipal>,
    Json(payload): Json<ExternalEditorProjectRenameRequest>,
) -> Result<Json<Value>, AppError> {
    require_scope(&principal, SCOPE_EDITOR_PROJECT)?;
    let project = state
        .spacetime_client()
        .rename_editor_project(EditorProjectRenameRecordInput {
            project_id,
            owner_user_id: principal.owner_user_id().to_string(),
            title: payload.title,
            updated_at_micros: current_utc_micros(),
        })
        .await
        .map_err(map_editor_project_error)?;

    Ok(json_success_body(
        Some(&request_context),
        ExternalEditorProjectResponse {
            project: editor_project_payload_from_record(project),
        },
    ))
}

pub async fn delete_external_editor_project(
    State(state): State<AppState>,
    Path(project_id): Path<String>,
    Extension(request_context): Extension<RequestContext>,
    Extension(principal): Extension<ExternalApiPrincipal>,
) -> Result<Json<Value>, AppError> {
    require_scope(&principal, SCOPE_EDITOR_PROJECT)?;
    let deleted_project_id = state
        .spacetime_client()
        .delete_editor_project(EditorProjectDeleteRecordInput {
            project_id,
            owner_user_id: principal.owner_user_id().to_string(),
        })
        .await
        .map_err(map_editor_project_error)?;

    Ok(json_success_body(
        Some(&request_context),
        ExternalEditorProjectDeleteResponse { deleted_project_id },
    ))
}

pub async fn save_external_editor_canvas(
    State(state): State<AppState>,
    Path(project_id): Path<String>,
    Extension(request_context): Extension<RequestContext>,
    Extension(principal): Extension<ExternalApiPrincipal>,
    Json(payload): Json<ExternalEditorCanvasSaveRequest>,
) -> Result<Json<Value>, AppError> {
    require_scope(&principal, SCOPE_EDITOR_CANVAS)?;
    let project = save_editor_project_layout_with_revision_and_get(
        &state,
        project_id.as_str(),
        principal.owner_user_id(),
        payload.viewport.into_record(),
        payload.layers,
        payload.expected_revision,
    )
    .await?;

    Ok(json_success_body(
        Some(&request_context),
        ExternalEditorProjectResponse {
            project: editor_project_payload_from_record(project),
        },
    ))
}

pub async fn get_external_editor_asset_library(
    State(state): State<AppState>,
    Extension(request_context): Extension<RequestContext>,
    Extension(principal): Extension<ExternalApiPrincipal>,
) -> Result<Json<Value>, AppError> {
    require_scope(&principal, SCOPE_EDITOR_ASSET)?;
    let library = state
        .spacetime_client()
        .get_editor_asset_library(principal.owner_user_id().to_string(), current_utc_micros())
        .await
        .map_err(map_editor_project_error)?;

    Ok(json_success_body(
        Some(&request_context),
        ExternalEditorAssetLibraryResponse {
            library: editor_asset_library_payload_from_record(library),
        },
    ))
}

pub async fn create_external_editor_asset_folder(
    State(state): State<AppState>,
    headers: HeaderMap,
    Extension(request_context): Extension<RequestContext>,
    Extension(principal): Extension<ExternalApiPrincipal>,
    Json(payload): Json<ExternalEditorAssetFolderCreateRequest>,
) -> Result<Json<Value>, AppError> {
    require_scope(&principal, SCOPE_EDITOR_ASSET)?;
    let owner_user_id = principal.owner_user_id().to_string();
    let folder_id = optional_editor_idempotency_key(&headers)?
        .map(|key| {
            editor_idempotent_create_id(
                EDITOR_ASSET_FOLDER_ID_PREFIX,
                &owner_user_id,
                "external-editor-asset-folder",
                key,
            )
        })
        .unwrap_or_else(|| build_prefixed_uuid_id(EDITOR_ASSET_FOLDER_ID_PREFIX));
    let folder = state
        .spacetime_client()
        .create_editor_asset_folder(EditorAssetFolderCreateRecordInput {
            folder_id,
            owner_user_id,
            label: payload.label,
            sort_order: payload.sort_order.unwrap_or(100),
            now_micros: current_utc_micros(),
        })
        .await
        .map_err(map_editor_project_error)?;

    Ok(json_success_body(
        Some(&request_context),
        ExternalEditorAssetFolderResponse {
            folder: editor_asset_folder_payload_from_record(folder),
        },
    ))
}

pub async fn update_external_editor_asset_folder(
    State(state): State<AppState>,
    Path(folder_id): Path<String>,
    Extension(request_context): Extension<RequestContext>,
    Extension(principal): Extension<ExternalApiPrincipal>,
    Json(payload): Json<ExternalEditorAssetFolderUpdateRequest>,
) -> Result<Json<Value>, AppError> {
    require_scope(&principal, SCOPE_EDITOR_ASSET)?;
    let folder = state
        .spacetime_client()
        .update_editor_asset_folder(EditorAssetFolderUpdateRecordInput {
            folder_id,
            owner_user_id: principal.owner_user_id().to_string(),
            label: normalize_optional_string(payload.label),
            collapsed: payload.collapsed,
            updated_at_micros: current_utc_micros(),
        })
        .await
        .map_err(map_editor_project_error)?;

    Ok(json_success_body(
        Some(&request_context),
        ExternalEditorAssetFolderResponse {
            folder: editor_asset_folder_payload_from_record(folder),
        },
    ))
}

pub async fn delete_external_editor_asset_folder(
    State(state): State<AppState>,
    Path(folder_id): Path<String>,
    Extension(request_context): Extension<RequestContext>,
    Extension(principal): Extension<ExternalApiPrincipal>,
) -> Result<Json<Value>, AppError> {
    require_scope(&principal, SCOPE_EDITOR_ASSET)?;
    let library = state
        .spacetime_client()
        .delete_editor_asset_folder(EditorAssetFolderDeleteRecordInput {
            folder_id,
            owner_user_id: principal.owner_user_id().to_string(),
            updated_at_micros: current_utc_micros(),
        })
        .await
        .map_err(map_editor_project_error)?;

    Ok(json_success_body(
        Some(&request_context),
        ExternalEditorAssetFolderDeleteResponse {
            library: editor_asset_library_payload_from_record(library),
        },
    ))
}

pub async fn create_external_editor_asset(
    State(state): State<AppState>,
    Extension(request_context): Extension<RequestContext>,
    Extension(principal): Extension<ExternalApiPrincipal>,
    Json(payload): Json<ExternalEditorAssetCreateRequest>,
) -> Result<Json<Value>, AppError> {
    require_scope(&principal, SCOPE_EDITOR_ASSET)?;
    let generation_inputs_json = serialize_external_editor_generation_inputs(
        payload.asset_kind.as_deref(),
        payload.generation_inputs.clone(),
    )?;
    let image_sequence_frames_json =
        serialize_external_editor_image_sequence_frames(payload.image_sequence_frames)?;
    let object_key = normalize_optional_string(payload.object_key);
    let image_src = normalize_editor_persisted_media_src(payload.image_src, object_key.as_deref())?;
    let asset = state
        .spacetime_client()
        .create_editor_asset(EditorAssetCreateRecordInput {
            asset_id: build_prefixed_uuid_id(EDITOR_ASSET_ID_PREFIX),
            owner_user_id: principal.owner_user_id().to_string(),
            folder_id: payload.folder_id,
            label: payload.label,
            asset_object_id: normalize_optional_string(payload.asset_object_id),
            image_src,
            object_key,
            width: payload.width,
            height: payload.height,
            source_type: payload.source_type,
            prompt: normalize_optional_string(payload.prompt),
            actual_prompt: normalize_optional_string(payload.actual_prompt),
            model: normalize_optional_string(payload.model),
            provider: normalize_optional_string(payload.provider),
            task_id: normalize_optional_string(payload.task_id),
            asset_kind: normalize_optional_string(payload.asset_kind),
            generation_inputs_json,
            source_resource_id: None,
            generation_cost_mud_points: 0,
            now_micros: current_utc_micros(),
            thumbnail_src: None,
            group_task_id: None,
            group_task_expected_asset_count: None,
            image_sequence_frames_json,
            image_sequence_duration_ms: payload.image_sequence_duration_ms.map(NonZeroU64::get),
        })
        .await
        .map_err(map_editor_project_error)?;

    Ok(json_success_body(
        Some(&request_context),
        ExternalEditorAssetResponse {
            asset: editor_asset_payload_from_record(asset),
        },
    ))
}

pub async fn update_external_editor_asset(
    State(state): State<AppState>,
    Path(asset_id): Path<String>,
    Extension(request_context): Extension<RequestContext>,
    Extension(principal): Extension<ExternalApiPrincipal>,
    Json(payload): Json<ExternalEditorAssetUpdateRequest>,
) -> Result<Json<Value>, AppError> {
    require_scope(&principal, SCOPE_EDITOR_ASSET)?;
    let asset = state
        .spacetime_client()
        .update_editor_asset(EditorAssetUpdateRecordInput {
            asset_id,
            owner_user_id: principal.owner_user_id().to_string(),
            label: normalize_optional_string(payload.label),
            folder_id: normalize_optional_string(payload.folder_id),
            updated_at_micros: current_utc_micros(),
        })
        .await
        .map_err(map_editor_project_error)?;

    Ok(json_success_body(
        Some(&request_context),
        ExternalEditorAssetResponse {
            asset: editor_asset_payload_from_record(asset),
        },
    ))
}

pub async fn delete_external_editor_asset(
    State(state): State<AppState>,
    Path(asset_id): Path<String>,
    Extension(request_context): Extension<RequestContext>,
    Extension(principal): Extension<ExternalApiPrincipal>,
) -> Result<Json<Value>, AppError> {
    require_scope(&principal, SCOPE_EDITOR_ASSET)?;
    let asset = state
        .spacetime_client()
        .delete_editor_asset(EditorAssetDeleteRecordInput {
            asset_id,
            owner_user_id: principal.owner_user_id().to_string(),
        })
        .await
        .map_err(map_editor_project_error)?;

    Ok(json_success_body(
        Some(&request_context),
        ExternalEditorAssetResponse {
            asset: editor_asset_payload_from_record(asset),
        },
    ))
}

pub async fn create_external_editor_project_resource(
    State(state): State<AppState>,
    Path(project_id): Path<String>,
    headers: HeaderMap,
    Extension(request_context): Extension<RequestContext>,
    Extension(principal): Extension<ExternalApiPrincipal>,
    Json(payload): Json<ExternalEditorProjectResourceCreateRequest>,
) -> Result<Json<Value>, AppError> {
    require_scope(&principal, SCOPE_EDITOR_ASSET)?;
    let generation_inputs_json = serialize_external_editor_generation_inputs(
        payload.asset_kind.as_deref(),
        payload.generation_inputs.clone(),
    )?;
    let image_sequence_frames_json =
        serialize_external_editor_image_sequence_frames(payload.image_sequence_frames)?;
    let object_key = normalize_optional_string(payload.object_key);
    let image_src = normalize_editor_persisted_media_src(payload.image_src, object_key.as_deref())?;
    let owner_user_id = principal.owner_user_id().to_string();
    let resource_id = optional_editor_idempotency_key(&headers)?
        .map(|key| {
            editor_idempotent_create_id(
                EDITOR_RESOURCE_ID_PREFIX,
                &owner_user_id,
                "external-editor-project-resource",
                key,
            )
        })
        .unwrap_or_else(|| build_prefixed_uuid_id(EDITOR_RESOURCE_ID_PREFIX));
    let resource = state
        .spacetime_client()
        .create_editor_project_resource(EditorProjectResourceCreateRecordInput {
            resource_id,
            project_id,
            owner_user_id,
            asset_object_id: normalize_optional_string(payload.asset_object_id),
            image_src,
            object_key,
            width: payload.width,
            height: payload.height,
            source_type: payload.source_type,
            prompt: normalize_optional_string(payload.prompt),
            actual_prompt: normalize_optional_string(payload.actual_prompt),
            model: normalize_optional_string(payload.model),
            provider: normalize_optional_string(payload.provider),
            task_id: normalize_optional_string(payload.task_id),
            source_resource_id: normalize_optional_string(payload.source_resource_id),
            asset_kind: normalize_optional_string(payload.asset_kind),
            generation_inputs_json,
            updated_at_micros: current_utc_micros(),
            image_sequence_frames_json,
            image_sequence_duration_ms: payload.image_sequence_duration_ms.map(NonZeroU64::get),
        })
        .await
        .map_err(map_editor_project_error)?;

    Ok(json_success_body(
        Some(&request_context),
        ExternalEditorProjectResourceResponse {
            resource: editor_project_resource_payload_from_record(resource),
        },
    ))
}

pub async fn generate_external_editor_image(
    State(state): State<AppState>,
    Extension(request_context): Extension<RequestContext>,
    Extension(principal): Extension<ExternalApiPrincipal>,
    headers: HeaderMap,
    payload: Result<Json<EditorImageGenerationRequest>, JsonRejection>,
) -> Result<Response, AppError> {
    let Json(payload) = parse_editor_generation_json_payload(payload)?;
    require_scope(&principal, SCOPE_EDITOR_IMAGE_GENERATE)?;
    let idempotency_key = require_idempotency_key(&headers)?;
    ensure_generic_editor_image_generation_contract(&payload)?;
    let project_id = payload.project_id.clone();
    let job = enqueue_editor_image_generation_for_owner(
        &state,
        &request_context,
        &editor_generation_caller(&principal, project_id),
        payload,
        Some(idempotency_key),
    )
    .await?;
    Ok(external_generation_accepted_response(&request_context, job))
}

pub async fn edit_external_editor_image(
    State(state): State<AppState>,
    Extension(request_context): Extension<RequestContext>,
    Extension(principal): Extension<ExternalApiPrincipal>,
    headers: HeaderMap,
    payload: Result<Json<EditorImageEditRequest>, JsonRejection>,
) -> Result<Response, AppError> {
    let Json(payload) = parse_editor_generation_json_payload(payload)?;
    require_scope(&principal, SCOPE_EDITOR_IMAGE_GENERATE)?;
    let idempotency_key = require_idempotency_key(&headers)?;
    let project_id = payload.project_id.clone();
    let job = enqueue_editor_image_edit_for_owner(
        &state,
        &request_context,
        &editor_generation_caller(&principal, project_id),
        payload,
        Some(idempotency_key),
    )
    .await?;
    Ok(external_generation_accepted_response(&request_context, job))
}

pub async fn remove_external_editor_image_background(
    State(state): State<AppState>,
    Extension(request_context): Extension<RequestContext>,
    Extension(principal): Extension<ExternalApiPrincipal>,
    headers: HeaderMap,
    payload: Result<Json<ExternalEditorBackgroundRemovalRequest>, JsonRejection>,
) -> Result<Response, Response> {
    require_scope_response(&request_context, &principal, SCOPE_EDITOR_IMAGE_GENERATE)?;
    let idempotency_key = require_idempotency_key(&headers)
        .map_err(|error| error.into_response_with_context(Some(&request_context)))?;
    let Json(payload) = parse_external_generation_json_payload(&request_context, payload)?;
    let payload = EditorBackgroundRemovalRequest::from(payload);
    let project_id = payload.project_id.clone();
    #[cfg(test)]
    if let Some(job) = state.intercept_test_external_background_removal_enqueue(
        principal.owner_user_id(),
        payload.source_image_src.as_str(),
        idempotency_key,
    ) {
        return Ok(external_generation_accepted_response(&request_context, job));
    }
    let job = enqueue_editor_background_removal_for_owner(
        &state,
        &request_context,
        &editor_generation_caller(&principal, project_id),
        payload,
        Some(idempotency_key),
    )
    .await
    .map_err(|error| error.into_response_with_context(Some(&request_context)))?;
    Ok(external_generation_accepted_response(&request_context, job))
}

pub async fn generate_external_editor_icon_spritesheet(
    State(state): State<AppState>,
    Extension(request_context): Extension<RequestContext>,
    Extension(principal): Extension<ExternalApiPrincipal>,
    headers: HeaderMap,
    payload: Result<Json<EditorIconSpritesheetGenerationRequest>, JsonRejection>,
) -> Result<Response, AppError> {
    let Json(payload) = parse_editor_generation_json_payload(payload)?;
    require_scope(&principal, SCOPE_EDITOR_IMAGE_GENERATE)?;
    let idempotency_key = require_idempotency_key(&headers)?;
    let project_id = payload.project_id.clone();
    let job = enqueue_editor_icon_spritesheet_generation_for_owner(
        &state,
        &request_context,
        &editor_generation_caller(&principal, project_id),
        payload,
        Some(idempotency_key),
    )
    .await?;
    Ok(external_generation_accepted_response(&request_context, job))
}

pub async fn extract_external_editor_ui_design_assets(
    State(state): State<AppState>,
    Extension(request_context): Extension<RequestContext>,
    Extension(principal): Extension<ExternalApiPrincipal>,
    headers: HeaderMap,
    Json(payload): Json<EditorUiDesignAssetExtractionRequest>,
) -> Result<Response, AppError> {
    require_scope(&principal, SCOPE_EDITOR_IMAGE_GENERATE)?;
    let idempotency_key = require_idempotency_key(&headers)?;
    let project_id = payload.project_id.clone();
    let job = enqueue_editor_ui_design_asset_extraction_for_owner(
        &state,
        &request_context,
        &editor_generation_caller(&principal, project_id),
        payload,
        Some(idempotency_key),
    )
    .await?;
    Ok(external_generation_accepted_response(&request_context, job))
}

pub async fn generate_external_editor_character_animation(
    State(state): State<AppState>,
    Extension(request_context): Extension<RequestContext>,
    Extension(principal): Extension<ExternalApiPrincipal>,
    headers: HeaderMap,
    payload: Result<
        Json<shared_contracts::assets::EditorCharacterAnimationGenerateRequest>,
        JsonRejection,
    >,
) -> Result<Response, Response> {
    require_scope_response(&request_context, &principal, SCOPE_EDITOR_IMAGE_GENERATE)?;
    let idempotency_key = require_idempotency_key(&headers)
        .map_err(|error| error.into_response_with_context(Some(&request_context)))?;
    let Json(payload) = parse_external_generation_json_payload(&request_context, payload)?;
    let job = enqueue_editor_character_animation_for_owner(
        &state,
        &request_context,
        principal.owner_user_id(),
        payload,
        Some(idempotency_key),
    )
    .await?;
    Ok(external_generation_accepted_response(&request_context, job))
}

pub async fn generate_external_editor_video(
    State(state): State<AppState>,
    Extension(request_context): Extension<RequestContext>,
    Extension(principal): Extension<ExternalApiPrincipal>,
    headers: HeaderMap,
    payload: Result<Json<shared_contracts::assets::EditorVideoGenerateRequest>, JsonRejection>,
) -> Result<Response, Response> {
    require_scope_response(&request_context, &principal, SCOPE_EDITOR_IMAGE_GENERATE)?;
    let idempotency_key = require_idempotency_key(&headers)
        .map_err(|error| error.into_response_with_context(Some(&request_context)))?;
    let Json(payload) = parse_external_generation_json_payload(&request_context, payload)?;
    let job = enqueue_editor_video_generation_for_owner(
        &state,
        &request_context,
        principal.owner_user_id(),
        payload,
        Some(idempotency_key),
    )
    .await?;
    Ok(external_generation_accepted_response(&request_context, job))
}

fn canonicalize_external_editor_sound_effect_model(
    value: Option<&str>,
) -> Result<&'static str, AppError> {
    shared_contracts::assets::canonicalize_editor_sound_effect_model(value).map_err(|message| {
        AppError::from_status(StatusCode::BAD_REQUEST).with_details(json!({
            "provider": EXTERNAL_EDITOR_PROVIDER,
            "field": "model",
            "message": message,
        }))
    })
}

pub async fn generate_external_editor_sound_effect(
    State(state): State<AppState>,
    Extension(request_context): Extension<RequestContext>,
    Extension(principal): Extension<ExternalApiPrincipal>,
    headers: HeaderMap,
    payload: Result<
        Json<shared_contracts::assets::EditorSoundEffectGenerateRequest>,
        JsonRejection,
    >,
) -> Result<Response, Response> {
    require_scope_response(&request_context, &principal, SCOPE_EDITOR_IMAGE_GENERATE)?;
    let idempotency_key = require_idempotency_key(&headers)
        .map_err(|error| error.into_response_with_context(Some(&request_context)))?;
    let Json(mut payload) = parse_external_generation_json_payload(&request_context, payload)?;
    let model = canonicalize_external_editor_sound_effect_model(payload.model.as_deref())
        .map_err(|error| error.into_response_with_context(Some(&request_context)))?;
    payload.model = Some(model.to_string());
    let job = enqueue_editor_sound_effect_generation_for_owner(
        &state,
        &request_context,
        principal.owner_user_id(),
        payload,
        Some(idempotency_key),
    )
    .await?;
    Ok(external_generation_accepted_response(&request_context, job))
}

pub async fn generate_external_editor_background_music(
    State(state): State<AppState>,
    Extension(request_context): Extension<RequestContext>,
    Extension(principal): Extension<ExternalApiPrincipal>,
    headers: HeaderMap,
    payload: Result<
        Json<shared_contracts::assets::EditorBackgroundMusicGenerateRequest>,
        JsonRejection,
    >,
) -> Result<Response, Response> {
    require_scope_response(&request_context, &principal, SCOPE_EDITOR_IMAGE_GENERATE)?;
    let idempotency_key = require_idempotency_key(&headers)
        .map_err(|error| error.into_response_with_context(Some(&request_context)))?;
    let Json(payload) = parse_external_generation_json_payload(&request_context, payload)?;
    let job = enqueue_editor_background_music_generation_for_owner(
        &state,
        &request_context,
        principal.owner_user_id(),
        payload,
        Some(idempotency_key),
    )
    .await?;
    Ok(external_generation_accepted_response(&request_context, job))
}

pub async fn get_external_editor_generation_job(
    State(state): State<AppState>,
    Path(operation_id): Path<String>,
    Extension(request_context): Extension<RequestContext>,
    Extension(principal): Extension<ExternalApiPrincipal>,
) -> Result<Json<Value>, AppError> {
    require_scope(&principal, SCOPE_EDITOR_IMAGE_GENERATE)?;
    let input = ExternalGenerationJobGetRecordInput {
        job_id: operation_id,
        owner_user_id: principal.owner_user_id().to_string(),
    };
    let summary = state
        .spacetime_client()
        .get_external_generation_job_summary(input.clone())
        .await
        .map_err(map_external_generation_lookup_error)?;
    let detail = map_external_generation_job_status_detail(summary.clone());
    let result = if detail.status.status == ExternalGenerationJobStatus::Completed {
        let artifacts = state
            .spacetime_client()
            .get_external_generation_job_generated_artifacts(input)
            .await
            .map_err(map_external_generation_lookup_error)?;
        let payload = artifacts
            .result_payload_json
            .as_deref()
            .and_then(|payload| serde_json::from_str::<Value>(payload).ok())
            .ok_or_else(|| {
                AppError::from_status(StatusCode::BAD_GATEWAY).with_details(json!({
                    "provider": EXTERNAL_EDITOR_PROVIDER,
                    "message": "生成任务已完成，但结果暂时不可读取。",
                }))
            })?;
        Some(payload.get("result").cloned().ok_or_else(|| {
            AppError::from_status(StatusCode::BAD_GATEWAY).with_details(json!({
                "provider": EXTERNAL_EDITOR_PROVIDER,
                "message": "生成任务已完成，但稳定结果引用缺失。",
            }))
        })?)
    } else {
        None
    };
    let poll_after_ms = matches!(
        detail.status.status,
        ExternalGenerationJobStatus::Queued | ExternalGenerationJobStatus::Running
    )
    .then_some(EXTERNAL_GENERATION_POLL_AFTER_MS);

    Ok(json_success_body(
        Some(&request_context),
        ExternalEditorGenerationJobResponse {
            operation_id: detail.status.operation_id,
            kind: summary.job_kind,
            status: detail.status.status,
            phase_label: detail.status.phase_label,
            phase_detail: detail.status.phase_detail,
            progress: detail.status.progress,
            error: detail.status.error,
            warning: detail.warning,
            result,
            poll_after_ms,
            updated_at_micros: detail.status.updated_at_micros,
        },
    ))
}

fn external_generation_accepted_response(
    request_context: &RequestContext,
    job: ExternalGenerationJobRecord,
) -> Response {
    let kind = job.job_kind.clone();
    let status = editor_generation_queue_state(job);
    let status_url = format!("/api/external/v1/generations/{}", status.operation_id);
    let mut response = (
        StatusCode::ACCEPTED,
        json_success_body(
            Some(request_context),
            ExternalEditorGenerationSubmissionResponse {
                operation_id: status.operation_id,
                kind,
                status: status.status,
                status_url: status_url.clone(),
                poll_after_ms: EXTERNAL_GENERATION_POLL_AFTER_MS,
                updated_at_micros: status.updated_at_micros,
            },
        ),
    )
        .into_response();
    if let Ok(location) = HeaderValue::from_str(&status_url) {
        response.headers_mut().insert("location", location);
    }
    response
        .headers_mut()
        .insert("retry-after", HeaderValue::from_static("2"));
    response
}

fn require_idempotency_key(headers: &HeaderMap) -> Result<&str, AppError> {
    let value = headers
        .get(IDEMPOTENCY_KEY_HEADER)
        .and_then(|value| value.to_str().ok())
        .map(str::trim)
        .filter(|value| !value.is_empty())
        .ok_or_else(|| {
            AppError::from_status(StatusCode::BAD_REQUEST).with_details(json!({
                "provider": EXTERNAL_EDITOR_PROVIDER,
                "message": "生成请求必须携带 Idempotency-Key 请求头。",
            }))
        })?;
    if value.len() > 128 || !value.bytes().all(|byte| (0x21..=0x7e).contains(&byte)) {
        return Err(
            AppError::from_status(StatusCode::BAD_REQUEST).with_details(json!({
                "provider": EXTERNAL_EDITOR_PROVIDER,
                "message": "Idempotency-Key 必须是 1-128 个可打印 ASCII 字符，且不能包含空格。",
            })),
        );
    }
    Ok(value)
}

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

fn map_external_generation_lookup_error(error: SpacetimeClientError) -> AppError {
    if error.to_string().contains("不存在") {
        AppError::from_status(StatusCode::NOT_FOUND)
    } else {
        AppError::from_status(StatusCode::BAD_GATEWAY).with_details(json!({
            "provider": EXTERNAL_EDITOR_PROVIDER,
            "message": "生成任务状态暂时不可用。",
        }))
    }
}

fn editor_generation_caller(
    principal: &ExternalApiPrincipal,
    project_id: Option<String>,
) -> EditorGenerationCaller {
    EditorGenerationCaller {
        owner_user_id: principal.owner_user_id().to_string(),
        audit_subject_user_id: Some(principal.owner_user_id().to_string()),
        audit_project_id: normalize_optional_string(project_id),
        phase_reporter: None,
        operation: None,
    }
}

fn require_scope(principal: &ExternalApiPrincipal, scope: &str) -> Result<(), AppError> {
    if principal.has_scope(scope) {
        return Ok(());
    }
    Err(
        AppError::from_status(StatusCode::FORBIDDEN).with_details(json!({
            "provider": EXTERNAL_EDITOR_PROVIDER,
            "keyId": principal.key_id(),
            "scope": scope,
            "message": "API Key 缺少所需权限",
        })),
    )
}

fn require_scope_response(
    request_context: &RequestContext,
    principal: &ExternalApiPrincipal,
    scope: &str,
) -> Result<(), Response> {
    require_scope(principal, scope)
        .map_err(|error| error.into_response_with_context(Some(request_context)))
}

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

fn serialize_external_editor_generation_inputs(
    asset_kind: Option<&str>,
    generation_inputs: Option<Value>,
) -> Result<Option<String>, AppError> {
    serialize_editor_generation_inputs(
        asset_kind,
        sanitize_editor_untrusted_generation_inputs(generation_inputs),
    )
}

fn serialize_external_editor_image_sequence_frames(
    frames: Option<Value>,
) -> Result<Option<String>, AppError> {
    crate::editor_project::serialize_editor_image_sequence_frames(frames)
}

#[cfg(test)]
mod tests {
    use super::*;
    use axum::{Router, body::Body, routing::post};
    use spacetime_client::{
        EditorCanvasRecord, EditorCanvasViewportRecord, EditorProjectResourceRecord,
    };
    use tower::ServiceExt;

    fn external_editor_project_resource_fixture(
        resource_id: &str,
        asset_kind: Option<&str>,
        object_key: Option<&str>,
        updated_at: &str,
    ) -> EditorProjectResourceRecord {
        serde_json::from_value(json!({
            "resource_id": resource_id,
            "project_id": "proj-summary-test",
            "owner_user_id": "user-1",
            "asset_object_id": format!("asset-object-{resource_id}"),
            "image_src": format!("/api/assets/{resource_id}"),
            "object_key": object_key,
            "width": 320,
            "height": 240,
            "source_type": "uploaded",
            "prompt": null,
            "actual_prompt": null,
            "model": null,
            "provider": null,
            "task_id": null,
            "source_resource_id": null,
            "asset_kind": asset_kind,
            "generation_inputs": null,
            "public_showcase_enabled": false,
            "created_at": updated_at,
            "updated_at": updated_at
        }))
        .expect("项目资源 fixture 应兼容可选字段扩展")
    }

    fn external_editor_project_record_fixture(
        resources: Vec<EditorProjectResourceRecord>,
    ) -> EditorProjectRecord {
        EditorProjectRecord {
            project_id: "proj-summary-test".to_string(),
            owner_user_id: "user-1".to_string(),
            title: "摘要项目".to_string(),
            canvas: EditorCanvasRecord {
                canvas_id: "canvas-summary-test".to_string(),
                project_id: "proj-summary-test".to_string(),
                title: "摘要项目".to_string(),
                viewport: EditorCanvasViewportRecord {
                    x: 0.0,
                    y: 0.0,
                    scale: 1.0,
                },
                layers: json!([{"large": "canvas payload must not enter summary"}]),
                revision: 3,
                layout_storage_version: 1,
                background_color: None,
                created_at: "2026-08-01T00:00:00Z".to_string(),
                updated_at: "2026-08-07T00:00:00Z".to_string(),
            },
            viewport: EditorCanvasViewportRecord {
                x: 0.0,
                y: 0.0,
                scale: 1.0,
            },
            layers: json!([{"large": "project payload must not enter summary"}]),
            resources,
            created_at: "2026-08-01T00:00:00Z".to_string(),
            updated_at: "2026-08-07T00:00:00Z".to_string(),
        }
    }

    #[test]
    fn external_sound_effect_model_canonicalizer_freezes_the_t1_matrix() {
        for accepted in [
            None,
            Some(""),
            Some(" \t\r\n"),
            Some("\u{0085}\u{2003}\u{00a0}"),
            Some("eleven_text_to_sound_v2"),
            Some("\u{0085} eleven_text_to_sound_v2 \u{2003}"),
        ] {
            assert_eq!(
                canonicalize_external_editor_sound_effect_model(accepted)
                    .expect("accepted model form should canonicalize"),
                shared_contracts::assets::EDITOR_SOUND_EFFECT_MODEL,
                "accepted={accepted:?}"
            );
        }

        for rejected in [
            "audio1.0",
            "AUDIO1.0",
            "Eleven_text_to_sound_v2",
            "eleven_text_to_sound_v3",
            "\u{200b}",
            "\u{feff}",
        ] {
            let error = canonicalize_external_editor_sound_effect_model(Some(rejected))
                .expect_err("legacy and unknown non-empty models should be rejected");
            assert_eq!(error.status_code(), StatusCode::BAD_REQUEST);
            assert!(error.body_text().contains("model"));
        }
    }

    const EXTERNAL_MEDIA_CREATE_REQUEST_SCHEMAS: [&str; 2] = [
        "ExternalEditorAssetCreateRequest",
        "ExternalEditorProjectResourceCreateRequest",
    ];

    fn external_generation_job_fixture(status: &str) -> ExternalGenerationJobRecord {
        ExternalGenerationJobRecord {
            job_id: "task-external-test".to_string(),
            dedupe_key: "external-api-generation:editor_image_generation:fingerprint".to_string(),
            job_kind: "editor_image_generation".to_string(),
            owner_user_id: "user-1".to_string(),
            source_module: "editor-canvas".to_string(),
            source_entity_id: "project-1".to_string(),
            request_label: "图片画布生成图片".to_string(),
            request_payload_json: "{}".to_string(),
            status: status.to_string(),
            attempt: 0,
            max_attempts: 1,
            last_error_message: None,
            worker_id: None,
            lease_expires_at: None,
            available_at: "2026-07-31T00:00:00Z".to_string(),
            result_payload_json: None,
            created_at: "2026-07-31T00:00:00Z".to_string(),
            started_at: None,
            completed_at: None,
            updated_at: "2026-07-31T00:00:00Z".to_string(),
            updated_at_micros: 1_785_456_000_000_000,
            lease_token: None,
            price_mud_points: 2,
            refund_ledger_id: None,
            notification_acknowledged_at: None,
            notification_acknowledged_at_micros: None,
            phase: None,
        }
    }

    fn request_context(wants_envelope: bool) -> RequestContext {
        RequestContext::new(
            "req-external-generation-test".to_string(),
            "POST /api/external/v1/editor/images/generations".to_string(),
            std::time::Duration::ZERO,
            wants_envelope,
        )
    }

    #[test]
    fn external_editor_project_list_query_defaults_to_full_and_accepts_summary() {
        let without_view = "http://localhost/api/external/v1/editor/projects"
            .parse()
            .expect("测试 URI 应合法");
        let Query(query) = Query::<ExternalEditorProjectListQuery>::try_from_uri(&without_view)
            .expect("缺省 view 应保持 full 兼容语义");
        assert_eq!(query.view, ExternalEditorProjectListView::Full);

        let explicit_full = "http://localhost/api/external/v1/editor/projects?view=full"
            .parse()
            .expect("测试 URI 应合法");
        let Query(query) = Query::<ExternalEditorProjectListQuery>::try_from_uri(&explicit_full)
            .expect("显式 full 应合法");
        assert_eq!(query.view, ExternalEditorProjectListView::Full);

        let summary = "http://localhost/api/external/v1/editor/projects?view=summary"
            .parse()
            .expect("测试 URI 应合法");
        let Query(query) = Query::<ExternalEditorProjectListQuery>::try_from_uri(&summary)
            .expect("summary 应合法");
        assert_eq!(query.view, ExternalEditorProjectListView::Summary);

        let unknown = "http://localhost/api/external/v1/editor/projects?view=compact"
            .parse()
            .expect("测试 URI 应合法");
        assert!(
            Query::<ExternalEditorProjectListQuery>::try_from_uri(&unknown).is_err(),
            "未知 view 不得静默回落到 full"
        );
    }

    #[test]
    fn external_editor_project_summary_selects_latest_persisted_cover() {
        let project = external_editor_project_record_fixture(vec![
            external_editor_project_resource_fixture(
                "resource-cover-old",
                Some(PROJECT_COVER_SNAPSHOT_ASSET_KIND),
                Some("editor/project-covers/old.webp"),
                "2026-08-02T00:00:00Z",
            ),
            external_editor_project_resource_fixture(
                "resource-other-newer",
                Some("editor_generated_image"),
                Some("editor/generated/newer.webp"),
                "2026-08-06T00:00:00Z",
            ),
            external_editor_project_resource_fixture(
                "resource-cover-empty-key",
                Some(PROJECT_COVER_SNAPSHOT_ASSET_KIND),
                Some("   "),
                "2026-08-07T00:00:00Z",
            ),
            external_editor_project_resource_fixture(
                "resource-cover-latest",
                Some(PROJECT_COVER_SNAPSHOT_ASSET_KIND),
                Some("editor/project-covers/latest.webp"),
                "2026-08-05T00:00:00Z",
            ),
        ]);

        let summary = external_editor_project_summary_from_record(project);
        let serialized = serde_json::to_value(&summary).expect("项目摘要应可序列化");

        assert_eq!(
            serialized,
            json!({
                "projectId": "proj-summary-test",
                "title": "摘要项目",
                "updatedAt": "2026-08-07T00:00:00Z",
                "cover": {
                    "resourceId": "resource-cover-latest",
                    "objectKey": "editor/project-covers/latest.webp",
                    "width": 320,
                    "height": 240,
                    "updatedAt": "2026-08-05T00:00:00Z"
                }
            })
        );
        assert!(serialized.get("canvas").is_none());
        assert!(serialized.get("layers").is_none());
        assert!(serialized.get("resources").is_none());
    }

    #[test]
    fn external_editor_project_summary_returns_null_without_persisted_cover() {
        let project = external_editor_project_record_fixture(vec![
            external_editor_project_resource_fixture(
                "resource-non-cover",
                Some("editor_generated_image"),
                Some("editor/generated/image.webp"),
                "2026-08-06T00:00:00Z",
            ),
            external_editor_project_resource_fixture(
                "resource-cover-without-object",
                Some(PROJECT_COVER_SNAPSHOT_ASSET_KIND),
                None,
                "2026-08-07T00:00:00Z",
            ),
        ]);

        let summary = external_editor_project_summary_from_record(project);
        assert_eq!(summary.cover, None);
        assert_eq!(
            serde_json::to_value(summary).expect("无封面摘要应可序列化")["cover"],
            Value::Null
        );
    }

    #[test]
    fn nineteen_large_projects_stay_below_mcp_limit_in_summary_view() {
        const MCP_LIMIT_BYTES: usize = 4 * 1024 * 1024;
        let projects = (0..19)
            .map(|index| {
                let mut project = external_editor_project_record_fixture(Vec::new());
                project.project_id = format!("proj-summary-{index}");
                project.canvas.project_id = project.project_id.clone();
                project.title = format!("项目 {index}");
                project.layers = json!({"largePayload": "x".repeat(160_000)});
                project.canvas.layers = json!({"largePayload": "x".repeat(160_000)});
                project
            })
            .collect::<Vec<_>>();

        let full = serde_json::to_vec(
            &projects
                .iter()
                .cloned()
                .map(editor_project_payload_from_record)
                .collect::<Vec<_>>(),
        )
        .expect("完整项目列表应可序列化");
        let summaries = projects
            .into_iter()
            .map(external_editor_project_summary_from_record)
            .collect::<Vec<_>>();
        let summary = serde_json::to_vec(&summaries).expect("项目摘要列表应可序列化");

        assert!(
            full.len() > MCP_LIMIT_BYTES,
            "测试数据必须先复现完整列表超过 MCP 上限"
        );
        assert_eq!(summaries.len(), 19);
        assert!(
            summary.len() < MCP_LIMIT_BYTES,
            "同一批项目的摘要必须低于 MCP 上限"
        );
        assert!(
            !summary
                .windows(b"largePayload".len())
                .any(|window| { window == b"largePayload" })
        );
    }

    #[test]
    fn external_editor_canvas_save_request_requires_expected_revision() {
        let missing_revision = serde_json::from_value::<ExternalEditorCanvasSaveRequest>(json!({
            "viewport": { "x": 0.0, "y": 0.0, "scale": 1.0 },
            "layers": [],
        }))
        .expect_err("外部画布保存缺少 expectedRevision 时必须在进入写路径前失败");
        assert!(missing_revision.to_string().contains("expectedRevision"));

        let request = serde_json::from_value::<ExternalEditorCanvasSaveRequest>(json!({
            "viewport": { "x": 0.0, "y": 0.0, "scale": 1.0 },
            "layers": [],
            "expectedRevision": 7,
        }))
        .expect("外部画布保存携带 expectedRevision 时应通过反序列化");
        assert_eq!(request.expected_revision, 7);
    }

    #[test]
    fn external_editor_generation_inputs_sanitize_audit_fields_for_regular_assets() {
        let serialized = serialize_external_editor_generation_inputs(
            Some("image"),
            Some(json!({
                "fields": [{"label": "角色设定", "value": "骑士"}],
                "screenColorHex": "#00FF00",
                "mattingProvider": "forged-provider",
                "mattingModel": "forged-model",
                "references": [{
                    "title": "伪造引用",
                    "label": "其他用户素材",
                    "refType": "asset",
                    "refId": "asset-forged"
                }],
                "extension": {"durationSeconds": 4}
            })),
        )
        .expect("外部编辑器生成输入应可序列化")
        .expect("非空生成输入应保留");
        let parsed: Value = serde_json::from_str(&serialized).expect("生成输入应为合法 JSON");

        assert_eq!(parsed["fields"][0]["value"], "骑士");
        assert_eq!(parsed["extension"]["durationSeconds"], 4);
        assert!(parsed.get("screenColorHex").is_none());
        assert!(parsed.get("mattingProvider").is_none());
        assert!(parsed.get("mattingModel").is_none());
        assert!(parsed.get("references").is_none());
    }

    #[test]
    fn external_editor_character_animation_generation_inputs_reject_legacy_runtime_fields() {
        for (field, value) in [
            ("characterAnimation", json!({ "durationSeconds": 4 })),
            ("frames", json!([])),
            ("previewVideoPath", json!("/generated/action/preview.mp4")),
            ("frameCount", json!(32)),
            ("fps", json!(8)),
            ("durationSeconds", json!(4)),
        ] {
            let mut generation_inputs = serde_json::Map::new();
            generation_inputs.insert("fields".to_string(), json!([]));
            generation_inputs.insert(field.to_string(), value);

            let error = serialize_external_editor_generation_inputs(
                Some("character-animation"),
                Some(Value::Object(generation_inputs)),
            )
            .expect_err("External v1 不应再接受角色动作旧运行字段");

            assert_eq!(error.status_code(), StatusCode::BAD_REQUEST);
            assert_eq!(
                error
                    .details()
                    .and_then(|details| details["fields"][0].as_str()),
                Some(field)
            );
            assert!(error.body_text().contains("imageSequenceFrames"));
            assert!(error.body_text().contains("imageSequenceDurationMs"));
        }
    }

    #[test]
    fn external_editor_sequence_frames_reject_temporary_signed_urls_without_stable_references() {
        let error = serialize_external_editor_image_sequence_frames(Some(json!([
            {
                "imageSrc": "https://example.invalid/frame-01.png?Expires=60&Signature=temporary-1",
                "width": 192,
                "height": 256
            },
            {
                "imageSrc": "https://example.invalid/frame-02.png?Expires=60&Signature=temporary-2",
                "width": 192,
                "height": 256
            }
        ])))
        .expect_err("External v1 不能把仅含临时签名 URL 的帧持久化为正式动作");

        assert_eq!(error.status_code(), StatusCode::BAD_REQUEST);
        assert_eq!(
            error.details().and_then(|details| details.get("fields")),
            Some(&json!(["objectKey", "assetObjectId"]))
        );
        assert!(error.body_text().contains("临时签名 URL"));
    }

    #[test]
    fn external_editor_sequence_frames_derive_persistent_paths_from_object_keys() {
        let serialized = serialize_external_editor_image_sequence_frames(Some(json!([
            {
                "imageSrc": "https://example.invalid/frame-01.png?Expires=60&Signature=temporary-1",
                "objectKey": "/generated/action/frame-01.png",
                "assetObjectId": "asset-object-frame-01",
                "width": 192,
                "height": 256
            },
            {
                "imageSrc": "https://example.invalid/frame-02.png?Expires=60&Signature=temporary-2",
                "objectKey": "generated/action/frame-02.png",
                "assetObjectId": "asset-object-frame-02",
                "width": 192,
                "height": 256
            }
        ])))
        .expect("带稳定对象引用的 External v1 正式帧应可持久化")
        .expect("正式帧序列应产生 JSON");
        let frames: Value = serde_json::from_str(&serialized).expect("正式帧序列应为合法 JSON");

        assert_eq!(frames[0]["imageSrc"], "/generated/action/frame-01.png");
        assert_eq!(frames[1]["imageSrc"], "/generated/action/frame-02.png");
        assert!(frames.as_array().is_some_and(|frames| {
            frames.iter().all(|frame| {
                !frame["imageSrc"]
                    .as_str()
                    .is_some_and(|image_src| image_src.contains("Signature="))
            })
        }));
    }

    #[test]
    fn external_generation_requires_bounded_printable_idempotency_key() {
        let missing = HeaderMap::new();
        let error = require_idempotency_key(&missing).expect_err("外部生成必须显式提供幂等键");
        assert_eq!(error.status_code(), StatusCode::BAD_REQUEST);
        assert!(error.body_text().contains("Idempotency-Key"));

        let mut whitespace = HeaderMap::new();
        whitespace.insert(IDEMPOTENCY_KEY_HEADER, HeaderValue::from_static("   "));
        assert!(require_idempotency_key(&whitespace).is_err());

        let mut valid = HeaderMap::new();
        let longest_valid = "x".repeat(128);
        valid.insert(
            IDEMPOTENCY_KEY_HEADER,
            HeaderValue::from_str(&longest_valid).expect("128 字节可打印 ASCII 应是合法 header"),
        );
        assert_eq!(
            require_idempotency_key(&valid).expect("边界长度幂等键应通过"),
            longest_valid
        );

        for invalid in [
            "x".repeat(129),
            "contains space".to_string(),
            "中文".to_string(),
        ] {
            let mut headers = HeaderMap::new();
            headers.insert(
                IDEMPOTENCY_KEY_HEADER,
                HeaderValue::from_str(&invalid).expect("测试值应可构造为 HTTP header"),
            );
            let error = require_idempotency_key(&headers)
                .expect_err("超长、含空格或非 ASCII 的幂等键必须拒绝");
            assert_eq!(error.status_code(), StatusCode::BAD_REQUEST);
        }
    }

    #[test]
    fn external_project_create_rejects_an_invalid_optional_idempotency_header() {
        let mut headers = HeaderMap::new();
        headers.insert(
            IDEMPOTENCY_KEY_HEADER,
            HeaderValue::from_static("contains space"),
        );
        let error = optional_editor_idempotency_key(&headers)
            .expect_err("External project create 必须拒绝非法可选幂等键");
        assert_eq!(error.status_code(), StatusCode::BAD_REQUEST);

        let source = include_str!("external_editor_api.rs");
        let handler = source
            .split_once("pub async fn create_external_editor_project(")
            .and_then(|(_, tail)| {
                tail.split_once("pub async fn list_external_editor_projects(")
                    .map(|(body, _)| body)
            })
            .expect("external project create handler");
        assert!(handler.contains("optional_editor_idempotency_key(&headers)?"));
    }

    #[tokio::test]
    async fn external_generation_submission_is_accepted_with_poll_contract() {
        let response = external_generation_accepted_response(
            &request_context(false),
            external_generation_job_fixture("pending"),
        );

        assert_eq!(response.status(), StatusCode::ACCEPTED);
        assert_eq!(
            response
                .headers()
                .get("location")
                .and_then(|value| value.to_str().ok()),
            Some("/api/external/v1/generations/task-external-test")
        );
        assert_eq!(
            response
                .headers()
                .get("retry-after")
                .and_then(|value| value.to_str().ok()),
            Some("2")
        );
        let body = axum::body::to_bytes(response.into_body(), 64 * 1024)
            .await
            .expect("submission body 应可读取");
        let payload: Value = serde_json::from_slice(&body).expect("submission body 应为 JSON");

        assert_eq!(payload["operationId"], json!("task-external-test"));
        assert_eq!(payload["kind"], json!("editor_image_generation"));
        assert_eq!(payload["status"], json!("queued"));
        assert_eq!(
            payload["statusUrl"],
            json!("/api/external/v1/generations/task-external-test")
        );
        assert_eq!(
            payload["pollAfterMs"],
            json!(EXTERNAL_GENERATION_POLL_AFTER_MS)
        );
    }

    #[tokio::test]
    async fn idempotent_completed_submission_reports_completed_in_envelope() {
        let response = external_generation_accepted_response(
            &request_context(true),
            external_generation_job_fixture("completed"),
        );
        let body = axum::body::to_bytes(response.into_body(), 64 * 1024)
            .await
            .expect("submission envelope 应可读取");
        let payload: Value = serde_json::from_slice(&body).expect("submission envelope 应为 JSON");

        assert_eq!(payload["ok"], json!(true));
        assert_eq!(payload["data"]["operationId"], json!("task-external-test"));
        assert_eq!(payload["data"]["status"], json!("completed"));
        assert_eq!(
            payload["data"]["pollAfterMs"],
            json!(EXTERNAL_GENERATION_POLL_AFTER_MS)
        );
    }

    async fn assert_external_generic_image_scene_bypass_is_rejected_before_queueing(
        case_name: &str,
        idempotency_key: &str,
        request_body: Value,
    ) {
        let state = AppState::new(crate::config::AppConfig::default())
            .expect("external image test state should build");
        state.fail_test_editor_generation_enqueue();
        let app = Router::new()
            .route(
                "/api/external/v1/editor/images/generations",
                post(generate_external_editor_image),
            )
            .layer(Extension(request_context(false)))
            .layer(Extension(ExternalApiPrincipal::for_test(
                "user-external-scene-bypass",
                &[SCOPE_EDITOR_IMAGE_GENERATE],
            )))
            .with_state(state.clone());
        let response = app
            .oneshot(
                axum::http::Request::builder()
                    .method("POST")
                    .uri("/api/external/v1/editor/images/generations")
                    .header("content-type", "application/json")
                    .header(IDEMPOTENCY_KEY_HEADER, idempotency_key)
                    .body(Body::from(request_body.to_string()))
                    .expect("external scene bypass request should build"),
            )
            .await
            .expect("external scene bypass response should return");
        let status = response.status();
        let body = axum::body::to_bytes(response.into_body(), 64 * 1024)
            .await
            .expect("external scene bypass response body should collect");
        let body_text = String::from_utf8_lossy(&body);

        assert_eq!(
            (status, state.test_editor_generation_enqueue_attempts()),
            (StatusCode::BAD_REQUEST, 0),
            "{case_name} must fail at the generic External boundary before queueing: {body_text}",
        );
        assert!(
            body_text.contains("/api/editor/scenes/generations"),
            "{case_name} should direct callers to the dedicated scene contract: {body_text}",
        );
    }

    #[tokio::test]
    async fn external_generic_image_generation_rejects_scene_kind_before_queueing() {
        assert_external_generic_image_scene_bypass_is_rejected_before_queueing(
            "scene kind",
            "scene-bypass-kind",
            json!({
                "prompt": "绕过后端场景 Prompt 组装",
                "kind": "scene",
            }),
        )
        .await;
    }

    #[tokio::test]
    async fn external_background_removal_rejects_undocumented_fields_before_queueing() {
        let state = AppState::new(crate::config::AppConfig::default())
            .expect("external background removal test state should build");
        state.fail_test_editor_generation_enqueue();
        let app = Router::new()
            .route(
                "/api/external/v1/editor/images/background-removals",
                post(remove_external_editor_image_background),
            )
            .layer(Extension(request_context(false)))
            .layer(Extension(ExternalApiPrincipal::for_test(
                "user-external-background-removal",
                &[SCOPE_EDITOR_IMAGE_GENERATE],
            )))
            .with_state(state.clone());

        for (case_name, extra_field) in [
            (
                "internal taskId",
                json!({"taskId": "caller-controlled-task"}),
            ),
            ("unknown field", json!({"unexpected": true})),
        ] {
            let mut request_body = json!({"sourceImageSrc": "editor-upload/source.png"});
            request_body
                .as_object_mut()
                .expect("background removal body should be an object")
                .extend(
                    extra_field
                        .as_object()
                        .expect("extra field fixture should be an object")
                        .clone(),
                );
            let response = app
                .clone()
                .oneshot(
                    axum::http::Request::builder()
                        .method("POST")
                        .uri("/api/external/v1/editor/images/background-removals")
                        .header("content-type", "application/json")
                        .header(IDEMPOTENCY_KEY_HEADER, "background-removal-contract-test")
                        .body(Body::from(request_body.to_string()))
                        .expect("external background removal request should build"),
                )
                .await
                .expect("external background removal response should return");

            assert_eq!(response.status(), StatusCode::BAD_REQUEST, "{case_name}");
            assert_eq!(
                state.test_editor_generation_enqueue_attempts(),
                0,
                "{case_name} must fail before queueing",
            );
        }
    }

    #[tokio::test]
    async fn external_background_removal_rejects_unstable_sources_before_queueing() {
        let state = AppState::new(crate::config::AppConfig::default())
            .expect("external background removal source test state should build");
        state.fail_test_editor_generation_enqueue();
        let app = Router::new()
            .route(
                "/api/external/v1/editor/images/background-removals",
                post(remove_external_editor_image_background),
            )
            .layer(Extension(request_context(false)))
            .layer(Extension(ExternalApiPrincipal::for_test(
                "user-external-background-removal-source",
                &[SCOPE_EDITOR_IMAGE_GENERATE],
            )))
            .with_state(state.clone());

        for source_image_src in [
            "data:image/png;base64,AAAA",
            "blob:browser-only",
            "https://oss.example/private.png?signature=temporary",
        ] {
            let response = app
                .clone()
                .oneshot(
                    axum::http::Request::builder()
                        .method("POST")
                        .uri("/api/external/v1/editor/images/background-removals")
                        .header("content-type", "application/json")
                        .header(
                            IDEMPOTENCY_KEY_HEADER,
                            "background-removal-source-contract-test",
                        )
                        .body(Body::from(
                            json!({"sourceImageSrc": source_image_src}).to_string(),
                        ))
                        .expect("external background removal source request should build"),
                )
                .await
                .expect("external background removal source response should return");

            assert_eq!(
                response.status(),
                StatusCode::BAD_REQUEST,
                "{source_image_src}"
            );
            assert_eq!(
                state.test_editor_generation_enqueue_attempts(),
                0,
                "unstable source must fail before queueing: {source_image_src}",
            );
        }
    }

    #[tokio::test]
    async fn external_background_removal_rejects_non_static_asset_kind_before_queueing() {
        let state = AppState::new(crate::config::AppConfig::default())
            .expect("external background removal kind test state should build");
        state.fail_test_editor_generation_enqueue();
        let app = Router::new()
            .route(
                "/api/external/v1/editor/images/background-removals",
                post(remove_external_editor_image_background),
            )
            .layer(Extension(request_context(false)))
            .layer(Extension(ExternalApiPrincipal::for_test(
                "user-external-background-removal-kind",
                &[SCOPE_EDITOR_IMAGE_GENERATE],
            )))
            .with_state(state.clone());

        for asset_kind in ["video", "audio", "character-animation", "image-sequence"] {
            let response = app
                .clone()
                .oneshot(
                    axum::http::Request::builder()
                        .method("POST")
                        .uri("/api/external/v1/editor/images/background-removals")
                        .header("content-type", "application/json")
                        .header(
                            IDEMPOTENCY_KEY_HEADER,
                            format!("background-removal-kind-{asset_kind}"),
                        )
                        .body(Body::from(
                            json!({
                                "sourceImageSrc": "editor-upload/source.png",
                                "assetKind": asset_kind,
                            })
                            .to_string(),
                        ))
                        .expect("external background removal kind request should build"),
                )
                .await
                .expect("external background removal kind response should return");

            assert_eq!(response.status(), StatusCode::BAD_REQUEST, "{asset_kind}");
            assert_eq!(
                state.test_editor_generation_enqueue_attempts(),
                0,
                "non-static kind must fail before queueing: {asset_kind}",
            );
        }
    }

    #[tokio::test]
    async fn external_background_removal_rejects_target_without_project_before_queueing() {
        let state = AppState::new(crate::config::AppConfig::default())
            .expect("external background removal target test state should build");
        state.fail_test_editor_generation_enqueue();
        let app = Router::new()
            .route(
                "/api/external/v1/editor/images/background-removals",
                post(remove_external_editor_image_background),
            )
            .layer(Extension(request_context(false)))
            .layer(Extension(ExternalApiPrincipal::for_test(
                "user-external-background-removal-target",
                &[SCOPE_EDITOR_IMAGE_GENERATE],
            )))
            .with_state(state.clone());

        let response = app
            .oneshot(
                axum::http::Request::builder()
                    .method("POST")
                    .uri("/api/external/v1/editor/images/background-removals")
                    .header("content-type", "application/json")
                    .header(
                        IDEMPOTENCY_KEY_HEADER,
                        "background-removal-target-contract-test",
                    )
                    .body(Body::from(
                        json!({
                            "sourceImageSrc": "editor-upload/source.png",
                            "targetLayerId": "layer-source",
                        })
                        .to_string(),
                    ))
                    .expect("external background removal target request should build"),
            )
            .await
            .expect("external background removal target response should return");

        assert_eq!(response.status(), StatusCode::BAD_REQUEST);
        assert_eq!(
            state.test_editor_generation_enqueue_attempts(),
            0,
            "target without project must fail before queueing",
        );
    }

    #[tokio::test]
    async fn external_background_removal_route_accepts_a_valid_submission_once() {
        const OWNER_USER_ID: &str = "user-external-background-removal-success";
        const SOURCE_IMAGE_SRC: &str = "editor-upload/background-removal-source.png";
        const IDEMPOTENCY_KEY: &str = "background-removal-success-contract-test";
        const OPERATION_ID: &str = "task-external-background-removal-success";

        let state = AppState::new(crate::config::AppConfig::default())
            .expect("external background removal success test state should build");
        let mut queued_job = external_generation_job_fixture("pending");
        queued_job.job_id = OPERATION_ID.to_string();
        queued_job.job_kind = "editor_background_removal".to_string();
        queued_job.owner_user_id = OWNER_USER_ID.to_string();
        state.set_test_external_background_removal_enqueue(
            OWNER_USER_ID,
            SOURCE_IMAGE_SRC,
            IDEMPOTENCY_KEY,
            queued_job,
        );
        let request_body = json!({"sourceImageSrc": SOURCE_IMAGE_SRC}).to_string();

        let without_scope = Router::new()
            .route(
                "/api/external/v1/editor/images/background-removals",
                post(remove_external_editor_image_background),
            )
            .layer(Extension(request_context(false)))
            .layer(Extension(ExternalApiPrincipal::for_test(
                OWNER_USER_ID,
                &[],
            )))
            .with_state(state.clone());
        let forbidden = without_scope
            .oneshot(
                axum::http::Request::builder()
                    .method("POST")
                    .uri("/api/external/v1/editor/images/background-removals")
                    .header("content-type", "application/json")
                    .header(IDEMPOTENCY_KEY_HEADER, IDEMPOTENCY_KEY)
                    .body(Body::from(request_body.clone()))
                    .expect("external background removal forbidden request should build"),
            )
            .await
            .expect("external background removal forbidden response should return");
        assert_eq!(forbidden.status(), StatusCode::FORBIDDEN);
        assert_eq!(state.test_editor_generation_enqueue_attempts(), 0);

        let app = Router::new()
            .route(
                "/api/external/v1/editor/images/background-removals",
                post(remove_external_editor_image_background),
            )
            .layer(Extension(request_context(false)))
            .layer(Extension(ExternalApiPrincipal::for_test(
                OWNER_USER_ID,
                &[SCOPE_EDITOR_IMAGE_GENERATE],
            )))
            .with_state(state.clone());
        let response = app
            .oneshot(
                axum::http::Request::builder()
                    .method("POST")
                    .uri("/api/external/v1/editor/images/background-removals")
                    .header("content-type", "application/json")
                    .header(IDEMPOTENCY_KEY_HEADER, IDEMPOTENCY_KEY)
                    .body(Body::from(request_body))
                    .expect("external background removal success request should build"),
            )
            .await
            .expect("external background removal success response should return");

        assert_eq!(response.status(), StatusCode::ACCEPTED);
        assert_eq!(
            response
                .headers()
                .get("location")
                .and_then(|value| value.to_str().ok()),
            Some("/api/external/v1/generations/task-external-background-removal-success")
        );
        let body = axum::body::to_bytes(response.into_body(), 64 * 1024)
            .await
            .expect("external background removal success body should collect");
        let payload: Value = serde_json::from_slice(&body)
            .expect("external background removal success body should be JSON");
        assert_eq!(payload["operationId"], json!(OPERATION_ID));
        assert_eq!(payload["status"], json!("queued"));
        assert_eq!(
            payload["statusUrl"],
            json!(format!("/api/external/v1/generations/{OPERATION_ID}"))
        );
        assert_eq!(
            payload["pollAfterMs"],
            json!(EXTERNAL_GENERATION_POLL_AFTER_MS)
        );
        assert_eq!(
            state.test_editor_generation_enqueue_attempts(),
            1,
            "valid External background removal should enqueue exactly once",
        );
    }

    #[tokio::test]
    async fn external_generic_image_generation_rejects_scene_asset_kind_before_queueing() {
        assert_external_generic_image_scene_bypass_is_rejected_before_queueing(
            "scene asset kind",
            "scene-bypass-asset-kind",
            json!({
                "prompt": "把普通图片伪装成正式场景产物",
                "assetKind": "scene",
            }),
        )
        .await;
    }

    #[test]
    fn generation_lookup_hides_cross_owner_jobs_as_not_found() {
        let not_found = map_external_generation_lookup_error(SpacetimeClientError::Procedure(
            "external_generation_job 不存在".to_string(),
        ));
        assert_eq!(not_found.status_code(), StatusCode::NOT_FOUND);

        let unavailable =
            map_external_generation_lookup_error(SpacetimeClientError::ConnectDropped);
        assert_eq!(unavailable.status_code(), StatusCode::BAD_GATEWAY);
        assert!(!unavailable.body_text().contains("ConnectDropped"));
    }

    #[test]
    fn external_openapi_character_animation_create_requires_complete_sequence_metadata() {
        let parsed: Value = serde_json::from_str(OPENAPI_JSON).expect("openapi json should parse");

        for request_schema_name in EXTERNAL_MEDIA_CREATE_REQUEST_SCHEMAS {
            let request_schema = &parsed["components"]["schemas"][request_schema_name];
            let conditional = &request_schema["allOf"][0];
            assert_eq!(
                conditional["then"]["required"],
                json!(["imageSequenceFrames", "imageSequenceDurationMs"]),
                "{request_schema_name}"
            );
            assert_eq!(
                request_schema["properties"]["imageSequenceFrames"]["minItems"],
                json!(2),
                "{request_schema_name}"
            );
            let frame_schema = &parsed["components"]["schemas"]["EditorImageSequenceFrame"];
            assert_eq!(
                frame_schema["required"],
                json!(["imageSrc", "objectKey", "assetObjectId", "width", "height"]),
                "{request_schema_name}"
            );
            for stable_field in ["objectKey", "assetObjectId"] {
                assert_eq!(
                    frame_schema["properties"][stable_field]["type"],
                    json!("string"),
                    "{request_schema_name}.{stable_field}"
                );
                assert_eq!(
                    frame_schema["properties"][stable_field]["minLength"],
                    json!(1),
                    "{request_schema_name}.{stable_field}"
                );
            }
            assert_eq!(
                request_schema["properties"]["imageSequenceDurationMs"]["minimum"],
                json!(1),
                "{request_schema_name}"
            );
            assert_eq!(
                conditional["then"]["properties"]["generationInputs"]["$ref"],
                "#/components/schemas/ExternalCharacterAnimationGenerationInputs",
                "{request_schema_name}"
            );
        }
    }

    #[test]
    fn external_openapi_non_animation_create_forbids_sequence_metadata() {
        let parsed: Value = serde_json::from_str(OPENAPI_JSON).expect("openapi json should parse");

        for request_schema_name in EXTERNAL_MEDIA_CREATE_REQUEST_SCHEMAS {
            let request_schema = &parsed["components"]["schemas"][request_schema_name];
            let conditional = &request_schema["allOf"][0];
            assert_eq!(
                conditional["if"]["required"],
                json!(["assetKind"]),
                "{request_schema_name}"
            );
            let forbidden_fields = conditional["else"]["not"]["anyOf"]
                .as_array()
                .expect("非角色动作分支必须逐项禁止序列字段")
                .iter()
                .filter_map(|schema| schema["required"][0].as_str())
                .collect::<Vec<_>>();
            assert_eq!(
                forbidden_fields,
                ["imageSequenceFrames", "imageSequenceDurationMs"],
                "{request_schema_name}"
            );
        }
    }

    #[test]
    fn exported_openapi_json_contains_external_editor_routes_and_security() {
        let parsed: Value = serde_json::from_str(OPENAPI_JSON).expect("openapi json should parse");

        assert_eq!(parsed["openapi"], "3.1.0");
        let legacy_runtime_fields = [
            "characterAnimation",
            "frames",
            "previewVideoPath",
            "frameCount",
            "fps",
            "durationSeconds",
        ];
        let forbidden_generation_inputs = &parsed["components"]["schemas"]["ExternalCharacterAnimationGenerationInputs"]
            ["not"]["anyOf"];
        assert_eq!(
            forbidden_generation_inputs
                .as_array()
                .expect("角色动作 generationInputs 约束必须是数组")
                .iter()
                .filter_map(|schema| schema["required"][0].as_str())
                .collect::<Vec<_>>(),
            legacy_runtime_fields
        );
        for request_schema in EXTERNAL_MEDIA_CREATE_REQUEST_SCHEMAS {
            assert_eq!(
                parsed["components"]["schemas"][request_schema]["allOf"][0]["if"]["properties"]["assetKind"]
                    ["const"],
                "character-animation"
            );
        }
        assert!(
            parsed["paths"]
                .get("/api/external/v1/editor/projects")
                .is_some()
        );
        assert!(
            parsed["paths"]
                .get("/api/external/v1/assets/direct-upload-tickets")
                .is_some()
        );
        assert!(
            parsed["paths"]
                .get("/api/external/v1/assets/objects/confirm")
                .is_some()
        );
        assert!(
            parsed["paths"]
                .get("/api/external/v1/assets/read-url")
                .is_some()
        );
        assert!(
            parsed["paths"]["/api/external/v1/editor/projects"]
                .get("get")
                .is_some()
        );
        assert!(
            parsed["paths"]["/api/external/v1/editor/projects"]
                .get("post")
                .is_some()
        );
        for path in [
            "/api/external/v1/editor/projects",
            "/api/external/v1/editor/projects/{projectId}/resources",
            "/api/external/v1/editor/assets/folders",
        ] {
            assert_eq!(
                parsed["paths"][path]["post"]["responses"]["409"]["$ref"],
                "#/components/responses/IdempotentCreateConflict",
                "{path} 必须公开专用稳定创建冲突"
            );
            assert!(
                parsed["paths"][path]["post"]["parameters"]
                    .as_array()
                    .is_some_and(|parameters| {
                        parameters.iter().any(|parameter| {
                            parameter.get("$ref").and_then(Value::as_str)
                                == Some("#/components/parameters/IdempotentCreateKey")
                        })
                    }),
                "{path} 必须公开可选的稳定创建幂等键"
            );
        }
        assert_eq!(
            parsed["components"]["parameters"]["IdempotentCreateKey"]["required"],
            false
        );
        assert!(
            parsed["components"]["parameters"]["IdempotentCreateKey"]["description"]
                .as_str()
                .is_some_and(|description| description.contains("已删除"))
        );
        assert!(
            parsed["paths"]["/api/external/v1/editor/projects"]["post"]["responses"]
                .get("400")
                .is_some(),
            "External project create 必须声明非法 Idempotency-Key 的 400"
        );
        assert!(
            parsed["paths"]
                .get("/api/external/v1/editor/projects/recent")
                .is_some()
        );
        assert!(
            parsed["paths"]["/api/external/v1/editor/projects/{projectId}"]
                .get("delete")
                .is_some()
        );
        assert!(
            parsed["paths"]
                .get("/api/external/v1/editor/projects/{projectId}/metadata")
                .is_some()
        );
        assert!(
            parsed["paths"]
                .get("/api/external/v1/editor/images/generations")
                .is_some()
        );
        for path in [
            "/api/external/v1/editor/images/generations",
            "/api/external/v1/editor/images/edits",
            "/api/external/v1/editor/images/background-removals",
            "/api/external/v1/editor/icon-spritesheets/generations",
            "/api/external/v1/editor/ui-designs/assets/extractions",
            "/api/external/v1/editor/character-animations/generations",
            "/api/external/v1/editor/videos/generations",
            "/api/external/v1/editor/audios/sound-effects/generations",
            "/api/external/v1/editor/audios/background-music/generations",
        ] {
            let operation = &parsed["paths"][path]["post"];
            assert!(operation["responses"].get("202").is_some(), "{path}");
            assert!(operation["responses"].get("200").is_none(), "{path}");
            assert!(
                operation["parameters"]
                    .as_array()
                    .is_some_and(|parameters| {
                        parameters.iter().any(|parameter| {
                            parameter.get("$ref").and_then(Value::as_str)
                                == Some("#/components/parameters/IdempotencyKey")
                        })
                    })
            );
        }
        assert!(
            parsed["paths"]
                .get("/api/external/v1/generations/{operationId}")
                .is_some()
        );
        for path in [
            "/api/external/v1/agent-integration.json",
            "/api/external/v1/skill/SKILL.md",
            "/api/external/v1/skill.zip",
            "/api/external/v1/mcp",
        ] {
            assert!(parsed["paths"].get(path).is_some(), "{path}");
        }
        assert!(
            parsed["components"]["schemas"]["EditorImageGenerationRequest"]["required"]
                .as_array()
                .is_some_and(|required| !required.contains(&json!("priceMudPoints")))
        );
        assert!(
            parsed["components"]["schemas"]["EditorImageGenerationRequest"]["properties"]
                .get("priceMudPoints")
                .is_none()
        );
        let image_style_schema =
            &parsed["components"]["schemas"]["EditorImageGenerationRequest"]["properties"]["style"];
        assert_eq!(image_style_schema["anyOf"][0]["type"], "string");
        assert!(image_style_schema["anyOf"][0].get("enum").is_none());
        assert_eq!(image_style_schema["examples"], json!(["none", "pixelArt"]));
        assert!(
            parsed["components"]["schemas"]["EditorImageGenerationRequest"]["properties"]["kind"]
                .get("default")
                .is_none()
        );
        let image_kind_schema =
            &parsed["components"]["schemas"]["EditorImageGenerationRequest"]["properties"]["kind"];
        assert!(
            image_kind_schema["enum"]
                .as_array()
                .is_some_and(|values| !values.contains(&json!("scene")))
        );
        assert!(
            image_kind_schema["description"]
                .as_str()
                .is_some_and(|description| description.contains("不开放结构化游戏场景"))
        );
        let image_asset_kind_schema = &parsed["components"]["schemas"]["EditorImageGenerationRequest"]
            ["properties"]["assetKind"];
        assert_eq!(
            image_asset_kind_schema["anyOf"][0]["not"]["pattern"],
            json!(r"^\s*scene\s*$")
        );
        assert!(
            image_asset_kind_schema["description"]
                .as_str()
                .is_some_and(|description| description.contains("禁止使用 scene"))
        );
        let generation_references = &parsed["components"]["schemas"]["EditorImageGenerationRequest"]
            ["properties"]["referenceImageSrcs"];
        assert_eq!(generation_references["maxItems"], 9);
        assert!(
            generation_references["items"]["description"]
                .as_str()
                .is_some_and(|description| description.contains("超限返回 400"))
        );
        assert_eq!(
            parsed["components"]["schemas"]["EditorProject"]["properties"]["layers"]["type"],
            "array"
        );
        assert_eq!(
            parsed["components"]["schemas"]["EditorCanvas"]["properties"]["layers"]["type"],
            "array"
        );
        assert!(
            parsed["components"]["schemas"]["ExternalEditorCanvasSaveRequest"]["required"]
                .as_array()
                .is_some_and(|required| required.contains(&json!("expectedRevision")))
        );
        assert!(
            parsed["paths"]
                .get("/api/external/v1/editor/images/edits")
                .is_some()
        );
        assert!(
            parsed["components"]["schemas"]["EditorImageEditRequest"]["required"]
                .as_array()
                .is_some_and(|required| required.contains(&json!("sourceReferenceId"))
                    && !required.contains(&json!("priceMudPoints")))
        );
        assert!(
            parsed["components"]["schemas"]["EditorImageEditRequest"]["properties"]
                .get("priceMudPoints")
                .is_none()
        );
        assert!(
            parsed["components"]["schemas"]["EditorImageEditRequest"]["properties"]
                .get("targetLayerId")
                .is_some()
        );
        let image_edit_schema =
            &parsed["components"]["schemas"]["EditorImageEditRequest"]["properties"];
        for legacy_field in ["sourceImageSrc", "sourceResourceId", "assetKind"] {
            assert!(
                image_edit_schema.get(legacy_field).is_none(),
                "{legacy_field}"
            );
        }
        assert!(
            image_edit_schema["sourceReferenceId"]["description"]
                .as_str()
                .is_some_and(|description| description.contains("项目资源 ID 或素材 ID")
                    && description.contains("objectKey")
                    && description.contains("未登记上传对象")
                    && description.contains("400"))
        );
        let image_edit_references = &image_edit_schema["referenceImageSrcs"];
        assert!(
            image_edit_references["items"]["description"]
                .as_str()
                .is_some_and(|description| description.contains("sourceReferenceId")
                    && !description.contains("sourceImageSrc"))
        );
        assert_eq!(
            parsed["components"]["schemas"]["EditorImageEditRequest"]["additionalProperties"],
            json!(false)
        );
        let image_edit_operation = &parsed["paths"]["/api/external/v1/editor/images/edits"]["post"];
        assert_eq!(
            image_edit_operation["x-genarrative-allowed-effective-asset-kinds"],
            json!([
                null,
                "spec",
                "character",
                "icon-spritesheet",
                "icon-spec",
                "publication-material",
                "ui-design",
                "scene"
            ])
        );
        assert!(
            image_edit_operation["description"]
                .as_str()
                .is_some_and(|description| description.contains("targetLayerId")
                    && description.contains("sourceReferenceId")
                    && description.contains("assetObjectId")
                    && description.contains("bucket/objectKey")
                    && description.contains("scene")
                    && description.contains("未知类型")
                    && description.contains("返回 400"))
        );
        assert!(image_edit_operation["responses"].get("400").is_some());
        for (schema, max_items) in [
            ("EditorImageEditRequest", 8),
            ("EditorIconSpritesheetGenerationRequest", 8),
            ("EditorUiDesignAssetExtractionRequest", 5),
        ] {
            let references =
                &parsed["components"]["schemas"][schema]["properties"]["referenceImageSrcs"];
            assert_eq!(references["maxItems"], max_items, "{schema}");
            assert!(
                references["items"]["description"]
                    .as_str()
                    .is_some_and(|description| description.contains("超限返回 400")),
                "{schema}"
            );
        }
        assert!(
            parsed["paths"]
                .get("/api/external/v1/editor/icon-spritesheets/generations")
                .is_some()
        );
        let icon_spritesheet_request =
            &parsed["components"]["schemas"]["EditorIconSpritesheetGenerationRequest"];
        assert!(
            icon_spritesheet_request["required"]
                .as_array()
                .is_some_and(|required| required.contains(&json!("referenceId")))
        );
        assert!(
            icon_spritesheet_request["properties"]
                .get("referenceImageSrc")
                .is_none()
        );
        let icon_descriptions = &icon_spritesheet_request["properties"]["iconDescriptions"];
        assert_eq!(
            icon_descriptions["items"]["maxLength"],
            crate::editor_project_icon::EDITOR_ICON_DESCRIPTION_MAX_CHARS
        );
        assert_eq!(
            icon_descriptions["x-genarrative-maxTotalCharacters"],
            crate::editor_project_icon::EDITOR_ICON_DESCRIPTIONS_MAX_TOTAL_CHARS
        );
        assert_eq!(
            icon_descriptions["x-genarrative-maxTotalUtf8Bytes"],
            crate::editor_project_icon::EDITOR_ICON_DESCRIPTIONS_MAX_TOTAL_UTF8_BYTES
        );
        assert!(
            icon_descriptions["description"]
                .as_str()
                .is_some_and(|description| description.contains("同步返回 400"))
        );
        assert_eq!(
            icon_spritesheet_request["properties"]["sliceCount"]["minimum"],
            json!(1)
        );
        let icon_style_schema = &parsed["components"]["schemas"]["EditorIconSpritesheetGenerationRequest"]
            ["properties"]["style"];
        assert_eq!(icon_style_schema["anyOf"][0]["type"], "string");
        assert!(icon_style_schema["anyOf"][0].get("enum").is_none());
        assert_eq!(icon_style_schema["examples"], json!(["none", "pixelArt"]));
        assert_eq!(
            parsed["components"]["schemas"]["EditorIconSpritesheetGenerationResponse"]["properties"]
                ["sliceWarning"]["anyOf"][0]["$ref"],
            "#/components/schemas/EditorIconSpritesheetSliceWarning"
        );
        assert!(parsed["components"]["schemas"]["EditorIconSpritesheetGenerationResponse"]["properties"]["sliceCount"].is_object());
        assert_eq!(
            parsed["components"]["schemas"]["EditorImageGenerationResponse"]["properties"]["warning"]
                ["anyOf"][0]["$ref"],
            "#/components/schemas/EditorGenerationWarning"
        );
        assert_eq!(
            parsed["components"]["schemas"]["EditorIconSpritesheetGenerationResponse"]["properties"]
                ["warning"]["anyOf"][0]["$ref"],
            "#/components/schemas/EditorGenerationWarning"
        );
        assert_eq!(
            parsed["components"]["schemas"]["EditorGenerationWarning"]["required"],
            json!(["code", "reason"])
        );
        assert_eq!(
            parsed["components"]["schemas"]["EditorGenerationWarning"]["properties"]["code"]["enum"],
            json!([
                "postprocess-failed-source-preserved",
                "dimension-restore-fallback",
                "unsupported-image-style",
                "multiple-generation-warnings"
            ])
        );
        assert!(
            parsed["paths"]
                .get("/api/external/v1/editor/ui-designs/assets/extractions")
                .is_some()
        );
        let ui_extraction_schema =
            &parsed["components"]["schemas"]["EditorUiDesignAssetExtractionRequest"];
        assert_eq!(
            ui_extraction_schema["properties"]["aspectRatio"]["const"],
            "1:1"
        );
        assert_eq!(
            ui_extraction_schema["properties"]["imageSize"]["enum"],
            json!(["1K", "2K"])
        );
        assert_eq!(
            ui_extraction_schema["properties"]["model"]["default"],
            "gemini-3.1-flash-image-preview"
        );
        assert!(
            ui_extraction_schema["properties"]
                .get("priceMudPoints")
                .is_none()
        );
        assert!(ui_extraction_schema["properties"].get("style").is_none());
        assert!(
            parsed["paths"]
                .get("/api/external/v1/editor/videos/generations")
                .is_some()
        );
        assert!(
            parsed["paths"]
                .get("/api/external/v1/editor/audios/sound-effects/generations")
                .is_some()
        );
        let sound_request = &parsed["components"]["schemas"]["EditorSoundEffectGenerationRequest"];
        assert_eq!(sound_request["required"], json!(["prompt"]));
        assert_eq!(
            sound_request["properties"]["prompt"]["maxLength"],
            json!(2048)
        );
        assert_eq!(
            sound_request["properties"]["model"]["default"],
            json!(shared_contracts::assets::EDITOR_SOUND_EFFECT_MODEL)
        );
        assert_eq!(
            sound_request["properties"]["duration"]["anyOf"][0]["type"],
            json!("number")
        );
        assert_eq!(
            sound_request["properties"]["duration"]["anyOf"][0]["minimum"],
            json!(0.5)
        );
        assert_eq!(
            sound_request["properties"]["duration"]["anyOf"][0]["maximum"],
            json!(30)
        );
        assert_eq!(sound_request["properties"]["loop"]["default"], json!(false));
        let audio_response = &parsed["components"]["schemas"]["EditorAudioGenerationResponse"];
        assert_eq!(
            audio_response["properties"]["durationSeconds"]["maximum"],
            json!(600)
        );
        assert_eq!(
            audio_response["properties"]["loop"]["type"],
            json!(["boolean", "null"])
        );
        let generation_job =
            &parsed["components"]["schemas"]["ExternalEditorGenerationJobResponse"];
        assert_eq!(
            generation_job["properties"]["result"]["$ref"],
            "#/components/schemas/ExternalEditorGenerationCompletedResult"
        );
        assert!(
            generation_job["required"]
                .as_array()
                .is_some_and(|required| !required.contains(&json!("result"))),
            "历史 completed 轮询结果可能没有 result，不能在无版本迁移时改为必填"
        );
        let completed_result =
            &parsed["components"]["schemas"]["ExternalEditorGenerationCompletedResult"];
        assert_eq!(
            completed_result["oneOf"][0]["$ref"],
            "#/components/schemas/ExternalEditorSoundEffectCompactResult"
        );
        assert_eq!(
            completed_result["oneOf"][1]["$ref"],
            "#/components/schemas/ExternalEditorGenerationGenericCompactResult"
        );
        assert!(
            completed_result.get("discriminator").is_none(),
            "completed result 联合不能带 discriminator：BGM 回 audioKind=background-music，图片、\
             视频与历史结果没有 audioKind，而 fallback 分支不可能把 audioKind 声明为必填，\
             任何映射都覆盖不全合法结果"
        );
        let sound_effect_result =
            &parsed["components"]["schemas"]["ExternalEditorSoundEffectCompactResult"];
        assert_eq!(sound_effect_result["required"], json!(["audioKind"]));
        assert_eq!(
            sound_effect_result["properties"]["audioKind"]["const"],
            "sound-effect"
        );
        assert_eq!(
            sound_effect_result["properties"]["durationSeconds"]["type"],
            "number"
        );
        assert_eq!(
            sound_effect_result["properties"]["durationSeconds"]["exclusiveMinimum"],
            json!(0)
        );
        assert_eq!(
            sound_effect_result["properties"]["durationSeconds"]["maximum"],
            json!(600)
        );
        assert_eq!(sound_effect_result["properties"]["loop"]["type"], "boolean");
        for stable_reference in ["taskId", "objectKey", "assetObjectId", "resource", "asset"] {
            assert!(
                sound_effect_result["properties"]
                    .get(stable_reference)
                    .is_some(),
                "SFX compact result must expose {stable_reference} when it is present"
            );
        }
        for redacted_field in ["prompt", "actualPrompt", "model", "provider"] {
            assert!(
                sound_effect_result["properties"]
                    .get(redacted_field)
                    .is_none(),
                "SFX compact schema must not declare redacted {redacted_field}"
            );
        }
        let generic_result =
            &parsed["components"]["schemas"]["ExternalEditorGenerationGenericCompactResult"];
        assert_eq!(generic_result["not"]["required"], json!(["audioKind"]));
        assert_eq!(
            generic_result["not"]["properties"]["audioKind"]["const"],
            "sound-effect"
        );
        assert_eq!(
            generic_result["not"]["properties"]
                .as_object()
                .map(serde_json::Map::len),
            Some(1),
            "fallback 只能排除 SFX 一种 audioKind；再排除别的值会把 BGM 等合法结果挤出联合"
        );
        assert!(
            generic_result["not"]["properties"]["audioKind"]
                .get("enum")
                .is_none(),
            "排除条件必须是 const sound-effect，换成 enum 会连带排掉 BGM"
        );
        assert!(
            parsed["paths"]
                .get("/api/external/v1/editor/audios/background-music/generations")
                .is_some()
        );
        assert!(
            parsed["paths"]
                .get("/api/external/v1/editor/images/background-removals")
                .is_some()
        );
        assert_eq!(
            parsed["paths"]["/api/external/v1/editor/images/background-removals"]["post"]["operationId"],
            "removeExternalEditorImageBackground"
        );
        assert_eq!(
            parsed["components"]["schemas"]["EditorBackgroundRemovalRequest"]["required"],
            json!(["sourceImageSrc"])
        );
        assert_eq!(
            parsed["components"]["schemas"]["EditorBackgroundRemovalRequest"]["additionalProperties"],
            json!(false)
        );
        assert!(
            parsed["components"]["schemas"]["EditorBackgroundRemovalRequest"]["properties"]
                .get("taskId")
                .is_none()
        );
        let background_target_description = parsed["components"]["schemas"]
            ["EditorBackgroundRemovalRequest"]["properties"]["targetLayerId"]["description"]
            .as_str()
            .expect("background removal targetLayerId should document placement semantics");
        assert!(background_target_description.contains("projectId"));
        assert!(background_target_description.contains("canvasCompletion"));
        assert!(background_target_description.contains("assetObjectId"));
        assert!(background_target_description.contains("bucket/objectKey"));
        assert!(background_target_description.contains("不自动写入画布"));
        let background_asset_kind = &parsed["components"]["schemas"]["EditorBackgroundRemovalRequest"]
            ["properties"]["assetKind"];
        assert_eq!(
            background_asset_kind["x-genarrative-media-family"],
            "static-image"
        );
        let background_asset_kind_description = background_asset_kind["description"]
            .as_str()
            .expect("background removal assetKind should document authoritative static semantics");
        assert!(background_asset_kind_description.contains("权威来源类型"));
        assert!(background_asset_kind_description.contains("入队前返回 400"));
        let background_source_resource_description = parsed["components"]["schemas"]
            ["EditorBackgroundRemovalRequest"]["properties"]["sourceResourceId"]["description"]
            .as_str()
            .expect("background removal sourceResourceId should document disambiguation");
        assert!(background_source_resource_description.contains("消歧"));
        assert!(background_source_resource_description.contains("targetLayerId"));
        assert!(background_source_resource_description.contains("Worker"));
        assert!(
            parsed["paths"]
                .get("/api/external/v1/editor/assets/library")
                .is_some()
        );
        assert!(
            parsed["paths"]
                .get("/api/external/v1/editor/projects/{projectId}/resources")
                .is_some()
        );
        assert!(
            parsed["paths"]
                .get("/api/external/v1/editor/assets/folders")
                .is_some()
        );
        assert!(
            parsed["paths"]
                .get("/api/external/v1/editor/assets/{assetId}")
                .is_some()
        );
        assert!(parsed["paths"].get("/api/profile/api-keys").is_none());
        assert!(
            parsed["components"]["securitySchemes"]
                .get("UserAccessToken")
                .is_none()
        );
        assert_eq!(
            parsed["components"]["securitySchemes"]["ExternalApiKey"]["scheme"],
            "bearer"
        );
        for schema_name in [
            "EditorProjectResource",
            "EditorAsset",
            "EditorImageGenerationResponse",
            "EditorIconSpritesheetGenerationResponse",
            "EditorVideoGenerationResponse",
            "EditorAudioGenerationResponse",
        ] {
            let schema = &parsed["components"]["schemas"][schema_name];
            assert!(
                schema["properties"].get("provider").is_none(),
                "{schema_name} 不应向普通用户公开 provider"
            );
            assert!(
                schema["required"]
                    .as_array()
                    .is_some_and(|required| !required.contains(&json!("provider"))),
                "{schema_name} 不应要求 provider"
            );
        }
    }
}