use serde::{Deserialize, Serialize};

pub const RUNTIME_PLATFORM_THEME_LIGHT: &str = "light";
pub const RUNTIME_PLATFORM_THEME_DARK: &str = "dark";
pub const SAVE_SNAPSHOT_VERSION: u32 = 2;
pub const PROFILE_WALLET_LEDGER_SOURCE_TYPE_SNAPSHOT_SYNC: &str = "snapshot_sync";
pub const BROWSE_HISTORY_THEME_MODE_MARTIAL: &str = "martial";
pub const BROWSE_HISTORY_THEME_MODE_ARCANE: &str = "arcane";
pub const BROWSE_HISTORY_THEME_MODE_MACHINA: &str = "machina";
pub const BROWSE_HISTORY_THEME_MODE_TIDE: &str = "tide";
pub const BROWSE_HISTORY_THEME_MODE_RIFT: &str = "rift";
pub const BROWSE_HISTORY_THEME_MODE_MYTHIC: &str = "mythic";
pub const CUSTOM_WORLD_VISIBILITY_DRAFT: &str = "draft";
pub const CUSTOM_WORLD_VISIBILITY_PUBLISHED: &str = "published";

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct RuntimeSettingsResponse {
    pub music_volume: f32,
    pub platform_theme: String,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct PutRuntimeSettingsRequest {
    pub music_volume: f32,
    pub platform_theme: String,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct SavedGameSnapshotResponse {
    pub version: u32,
    pub saved_at: String,
    pub game_state: serde_json::Value,
    pub bottom_tab: String,
    pub current_story: Option<serde_json::Value>,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct PutSavedGameSnapshotRequest {
    pub game_state: serde_json::Value,
    pub bottom_tab: String,
    #[serde(default)]
    pub current_story: Option<serde_json::Value>,
    #[serde(default)]
    pub saved_at: Option<String>,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct BasicOkResponse {
    pub ok: bool,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct PlatformBrowseHistoryEntryResponse {
    pub owner_user_id: String,
    pub profile_id: String,
    pub world_name: String,
    pub subtitle: String,
    pub summary_text: String,
    pub cover_image_src: Option<String>,
    pub theme_mode: String,
    pub author_display_name: String,
    pub visited_at: String,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct PlatformBrowseHistoryWriteEntryRequest {
    pub owner_user_id: String,
    pub profile_id: String,
    pub world_name: String,
    #[serde(default)]
    pub subtitle: Option<String>,
    #[serde(default)]
    pub summary_text: Option<String>,
    #[serde(default)]
    pub cover_image_src: Option<String>,
    #[serde(default)]
    pub theme_mode: Option<String>,
    #[serde(default)]
    pub author_display_name: Option<String>,
    #[serde(default)]
    pub visited_at: Option<String>,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct PlatformBrowseHistoryBatchSyncRequest {
    pub entries: Vec<PlatformBrowseHistoryWriteEntryRequest>,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(untagged)]
pub enum PlatformBrowseHistoryUpsertRequest {
    Single(PlatformBrowseHistoryWriteEntryRequest),
    Batch(PlatformBrowseHistoryBatchSyncRequest),
}

impl PlatformBrowseHistoryUpsertRequest {
    pub fn into_entries(self) -> Vec<PlatformBrowseHistoryWriteEntryRequest> {
        match self {
            Self::Single(entry) => vec![entry],
            Self::Batch(batch) => batch.entries,
        }
    }
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct PlatformBrowseHistoryResponse {
    pub entries: Vec<PlatformBrowseHistoryEntryResponse>,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct ProfileDashboardSummaryResponse {
    pub wallet_balance: u64,
    pub total_play_time_ms: u64,
    pub played_world_count: u32,
    pub updated_at: Option<String>,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct ProfileWalletLedgerEntryResponse {
    pub id: String,
    pub amount_delta: i64,
    pub balance_after: u64,
    pub source_type: String,
    pub created_at: String,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct ProfileWalletLedgerResponse {
    pub entries: Vec<ProfileWalletLedgerEntryResponse>,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct ProfilePlayedWorkSummaryResponse {
    pub world_key: String,
    pub owner_user_id: Option<String>,
    pub profile_id: Option<String>,
    pub world_type: Option<String>,
    pub world_title: String,
    pub world_subtitle: String,
    pub first_played_at: String,
    pub last_played_at: String,
    pub last_observed_play_time_ms: u64,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct ProfilePlayStatsResponse {
    pub total_play_time_ms: u64,
    pub played_works: Vec<ProfilePlayedWorkSummaryResponse>,
    pub updated_at: Option<String>,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct ProfileSaveArchiveSummaryResponse {
    pub world_key: String,
    pub owner_user_id: Option<String>,
    pub profile_id: Option<String>,
    pub world_type: Option<String>,
    pub world_name: String,
    pub subtitle: String,
    pub summary_text: String,
    pub cover_image_src: Option<String>,
    pub last_played_at: String,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct ProfileSaveArchiveListResponse {
    pub entries: Vec<ProfileSaveArchiveSummaryResponse>,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct ProfileSaveArchiveResumeResponse {
    pub entry: ProfileSaveArchiveSummaryResponse,
    pub snapshot: SavedGameSnapshotResponse,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct RuntimeInventorySlotResponse {
    pub slot_id: String,
    pub container_kind: String,
    pub slot_key: String,
    pub item_id: String,
    pub category: String,
    pub name: String,
    pub description: Option<String>,
    pub quantity: u32,
    pub rarity: String,
    pub tags: Vec<String>,
    pub stackable: bool,
    pub stack_key: String,
    pub equipment_slot_id: Option<String>,
    pub source_kind: String,
    pub source_reference_id: Option<String>,
    pub created_at: String,
    pub updated_at: String,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct RuntimeInventoryStateResponse {
    pub runtime_session_id: String,
    pub actor_user_id: String,
    pub backpack_items: Vec<RuntimeInventorySlotResponse>,
    pub equipment_items: Vec<RuntimeInventorySlotResponse>,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct CustomWorldProfileUpsertRequest {
    pub profile: serde_json::Value,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct CustomWorldLibraryEntryResponse {
    pub owner_user_id: String,
    pub profile_id: String,
    pub profile: serde_json::Value,
    pub visibility: String,
    pub published_at: Option<String>,
    pub updated_at: String,
    pub author_display_name: String,
    pub world_name: String,
    pub subtitle: String,
    pub summary_text: String,
    pub cover_image_src: Option<String>,
    pub theme_mode: String,
    pub playable_npc_count: u32,
    pub landmark_count: u32,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct CustomWorldGalleryCardResponse {
    pub owner_user_id: String,
    pub profile_id: String,
    pub visibility: String,
    pub published_at: Option<String>,
    pub updated_at: String,
    pub author_display_name: String,
    pub world_name: String,
    pub subtitle: String,
    pub summary_text: String,
    pub cover_image_src: Option<String>,
    pub theme_mode: String,
    pub playable_npc_count: u32,
    pub landmark_count: u32,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct CustomWorldLibraryResponse {
    pub entries: Vec<CustomWorldLibraryEntryResponse>,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct CustomWorldLibraryMutationResponse {
    pub entry: CustomWorldLibraryEntryResponse,
    pub entries: Vec<CustomWorldLibraryEntryResponse>,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct CustomWorldGalleryResponse {
    pub entries: Vec<CustomWorldGalleryCardResponse>,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct CustomWorldGalleryDetailResponse {
    pub entry: CustomWorldLibraryEntryResponse,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct CustomWorldWorkSummaryResponse {
    pub work_id: String,
    pub source_type: String,
    pub status: String,
    pub title: String,
    pub subtitle: String,
    pub summary: String,
    pub cover_image_src: Option<String>,
    #[serde(default)]
    pub cover_render_mode: Option<String>,
    #[serde(default)]
    pub cover_character_image_srcs: Vec<String>,
    pub updated_at: String,
    pub published_at: Option<String>,
    pub stage: Option<String>,
    pub stage_label: Option<String>,
    pub playable_npc_count: u32,
    pub landmark_count: u32,
    pub role_visual_ready_count: Option<u32>,
    pub role_animation_ready_count: Option<u32>,
    pub role_asset_summary_label: Option<String>,
    pub session_id: Option<String>,
    pub profile_id: Option<String>,
    pub can_resume: bool,
    pub can_enter_world: bool,
    pub blocker_count: u32,
    pub publish_ready: bool,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct CustomWorldWorksResponse {
    pub items: Vec<CustomWorldWorkSummaryResponse>,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct CreateCustomWorldAgentSessionRequest {
    #[serde(default)]
    pub seed_text: Option<String>,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct SendCustomWorldAgentMessageRequest {
    pub client_message_id: String,
    pub text: String,
    #[serde(default)]
    pub quick_fill_requested: Option<bool>,
    #[serde(default)]
    pub focus_card_id: Option<String>,
    #[serde(default)]
    pub selected_card_ids: Option<Vec<String>>,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct CustomWorldAgentMessageResponse {
    pub id: String,
    pub role: String,
    pub kind: String,
    pub text: String,
    pub created_at: String,
    pub related_operation_id: Option<String>,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct CustomWorldAgentOperationResponse {
    pub operation_id: String,
    #[serde(rename = "type")]
    pub operation_type: String,
    pub status: String,
    pub phase_label: String,
    pub phase_detail: String,
    pub progress: u32,
    pub error: Option<String>,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct CustomWorldDraftCardSummaryResponse {
    pub id: String,
    pub kind: String,
    pub title: String,
    pub subtitle: String,
    pub summary: String,
    pub status: String,
    pub linked_ids: Vec<String>,
    pub warning_count: u32,
    pub asset_status: Option<String>,
    pub asset_status_label: Option<String>,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct CustomWorldDraftCardDetailSectionResponse {
    pub id: String,
    pub label: String,
    pub value: String,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct CustomWorldDraftCardDetailResponse {
    pub id: String,
    pub kind: String,
    pub title: String,
    pub sections: Vec<CustomWorldDraftCardDetailSectionResponse>,
    pub linked_ids: Vec<String>,
    pub locked: bool,
    pub editable: bool,
    pub editable_section_ids: Vec<String>,
    pub warning_messages: Vec<String>,
    pub asset_status: Option<String>,
    pub asset_status_label: Option<String>,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct CustomWorldAgentCardDetailResponse {
    pub card: CustomWorldDraftCardDetailResponse,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct CustomWorldAgentCheckpointResponse {
    pub checkpoint_id: String,
    pub created_at: String,
    pub label: String,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct CustomWorldSupportedActionResponse {
    pub action: String,
    pub enabled: bool,
    pub reason: Option<String>,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct CustomWorldResultPreviewBlockerResponse {
    pub id: String,
    pub code: String,
    pub message: String,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct CustomWorldPublishGateResponse {
    pub profile_id: String,
    pub blockers: Vec<CustomWorldResultPreviewBlockerResponse>,
    pub blocker_count: u32,
    pub publish_ready: bool,
    pub can_enter_world: bool,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct CustomWorldAgentSessionSnapshotResponse {
    pub session_id: String,
    pub current_turn: u32,
    pub anchor_content: serde_json::Value,
    pub progress_percent: u32,
    pub last_assistant_reply: Option<String>,
    pub stage: String,
    pub focus_card_id: Option<String>,
    pub creator_intent: serde_json::Value,
    pub creator_intent_readiness: serde_json::Value,
    pub anchor_pack: serde_json::Value,
    pub lock_state: serde_json::Value,
    pub draft_profile: serde_json::Value,
    pub messages: Vec<CustomWorldAgentMessageResponse>,
    pub draft_cards: Vec<CustomWorldDraftCardSummaryResponse>,
    pub pending_clarifications: Vec<serde_json::Value>,
    pub suggested_actions: Vec<serde_json::Value>,
    pub recommended_replies: Vec<String>,
    pub quality_findings: Vec<serde_json::Value>,
    pub asset_coverage: serde_json::Value,
    pub checkpoints: Vec<CustomWorldAgentCheckpointResponse>,
    pub supported_actions: Vec<CustomWorldSupportedActionResponse>,
    pub publish_gate: Option<CustomWorldPublishGateResponse>,
    pub result_preview: Option<serde_json::Value>,
    pub updated_at: String,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct CustomWorldAgentSessionResponse {
    pub session: CustomWorldAgentSessionSnapshotResponse,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct ExecuteCustomWorldAgentActionRequest {
    pub action: String,
    #[serde(default)]
    pub profile_id: Option<String>,
    #[serde(default)]
    pub draft_profile: Option<serde_json::Value>,
    #[serde(default)]
    pub legacy_result_profile: Option<serde_json::Value>,
    #[serde(default)]
    pub setting_text: Option<String>,
    #[serde(default)]
    pub card_id: Option<String>,
    #[serde(default)]
    pub sections: Option<Vec<ExecuteCustomWorldAgentDraftCardSectionPatch>>,
    #[serde(default)]
    pub profile: Option<serde_json::Value>,
    #[serde(default)]
    pub count: Option<u32>,
    #[serde(default)]
    pub prompt_text: Option<String>,
    #[serde(default)]
    pub anchor_card_ids: Option<Vec<String>>,
    #[serde(default)]
    pub role_ids: Option<Vec<String>>,
    #[serde(default)]
    pub role_id: Option<String>,
    #[serde(default)]
    pub portrait_path: Option<String>,
    #[serde(default)]
    pub generated_visual_asset_id: Option<String>,
    #[serde(default)]
    pub generated_animation_set_id: Option<String>,
    #[serde(default)]
    pub animation_map: Option<serde_json::Value>,
    #[serde(default)]
    pub scene_ids: Option<Vec<String>>,
    #[serde(default)]
    pub scene_id: Option<String>,
    #[serde(default)]
    pub scene_kind: Option<String>,
    #[serde(default)]
    pub image_src: Option<String>,
    #[serde(default)]
    pub generated_scene_asset_id: Option<String>,
    #[serde(default)]
    pub generated_scene_prompt: Option<String>,
    #[serde(default)]
    pub generated_scene_model: Option<String>,
    #[serde(default)]
    pub checkpoint_id: Option<String>,
}

#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
#[serde(rename_all = "camelCase")]
pub struct ExecuteCustomWorldAgentDraftCardSectionPatch {
    pub section_id: String,
    pub value: String,
}

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

    #[test]
    fn runtime_settings_request_uses_camel_case_fields() {
        let payload = serde_json::to_value(PutRuntimeSettingsRequest {
            music_volume: 0.42,
            platform_theme: RUNTIME_PLATFORM_THEME_LIGHT.to_string(),
        })
        .expect("payload should serialize");

        assert_eq!(payload["platformTheme"], json!("light"));
        let music_volume = payload["musicVolume"]
            .as_f64()
            .expect("musicVolume should serialize as number");
        assert!((music_volume - 0.42).abs() < 0.0001);
    }

    #[test]
    fn browse_history_response_uses_camel_case_fields() {
        let payload = serde_json::to_value(PlatformBrowseHistoryResponse {
            entries: vec![PlatformBrowseHistoryEntryResponse {
                owner_user_id: "owner-1".to_string(),
                profile_id: "profile-1".to_string(),
                world_name: "世界".to_string(),
                subtitle: "".to_string(),
                summary_text: "".to_string(),
                cover_image_src: None,
                theme_mode: BROWSE_HISTORY_THEME_MODE_MYTHIC.to_string(),
                author_display_name: "玩家".to_string(),
                visited_at: "2026-04-21T00:00:00Z".to_string(),
            }],
        })
        .expect("payload should serialize");

        assert_eq!(payload["entries"][0]["ownerUserId"], json!("owner-1"));
        assert_eq!(payload["entries"][0]["themeMode"], json!("mythic"));
        assert_eq!(
            payload["entries"][0]["visitedAt"],
            json!("2026-04-21T00:00:00Z")
        );
    }

    #[test]
    fn browse_history_upsert_request_accepts_single_or_batch_shape() {
        let single: PlatformBrowseHistoryUpsertRequest = serde_json::from_value(json!({
            "ownerUserId": "owner-1",
            "profileId": "profile-1",
            "worldName": "世界"
        }))
        .expect("single shape should deserialize");
        let batch: PlatformBrowseHistoryUpsertRequest = serde_json::from_value(json!({
            "entries": [{
                "ownerUserId": "owner-1",
                "profileId": "profile-1",
                "worldName": "世界"
            }]
        }))
        .expect("batch shape should deserialize");

        assert_eq!(single.into_entries().len(), 1);
        assert_eq!(batch.into_entries().len(), 1);
    }

    #[test]
    fn profile_dashboard_response_uses_camel_case_fields() {
        let payload = serde_json::to_value(ProfileDashboardSummaryResponse {
            wallet_balance: 8,
            total_play_time_ms: 16,
            played_world_count: 3,
            updated_at: Some("2026-04-22T10:00:00Z".to_string()),
        })
        .expect("payload should serialize");

        assert_eq!(payload["walletBalance"], json!(8));
        assert_eq!(payload["totalPlayTimeMs"], json!(16));
        assert_eq!(payload["playedWorldCount"], json!(3));
        assert_eq!(payload["updatedAt"], json!("2026-04-22T10:00:00Z"));
    }

    #[test]
    fn profile_wallet_ledger_response_uses_camel_case_fields() {
        let payload = serde_json::to_value(ProfileWalletLedgerResponse {
            entries: vec![ProfileWalletLedgerEntryResponse {
                id: "ledger-1".to_string(),
                amount_delta: 12,
                balance_after: 80,
                source_type: PROFILE_WALLET_LEDGER_SOURCE_TYPE_SNAPSHOT_SYNC.to_string(),
                created_at: "2026-04-22T10:00:00Z".to_string(),
            }],
        })
        .expect("payload should serialize");

        assert_eq!(payload["entries"][0]["amountDelta"], json!(12));
        assert_eq!(payload["entries"][0]["balanceAfter"], json!(80));
        assert_eq!(payload["entries"][0]["sourceType"], json!("snapshot_sync"));
        assert_eq!(
            payload["entries"][0]["createdAt"],
            json!("2026-04-22T10:00:00Z")
        );
    }

    #[test]
    fn profile_play_stats_response_uses_camel_case_fields() {
        let payload = serde_json::to_value(ProfilePlayStatsResponse {
            total_play_time_ms: 18,
            played_works: vec![ProfilePlayedWorkSummaryResponse {
                world_key: "builtin:WUXIA".to_string(),
                owner_user_id: None,
                profile_id: None,
                world_type: Some("WUXIA".to_string()),
                world_title: "武侠世界".to_string(),
                world_subtitle: "".to_string(),
                first_played_at: "2026-04-20T10:00:00Z".to_string(),
                last_played_at: "2026-04-22T10:00:00Z".to_string(),
                last_observed_play_time_ms: 1200,
            }],
            updated_at: Some("2026-04-22T10:00:00Z".to_string()),
        })
        .expect("payload should serialize");

        assert_eq!(payload["totalPlayTimeMs"], json!(18));
        assert_eq!(
            payload["playedWorks"][0]["worldKey"],
            json!("builtin:WUXIA")
        );
        assert_eq!(
            payload["playedWorks"][0]["lastObservedPlayTimeMs"],
            json!(1200)
        );
        assert_eq!(payload["updatedAt"], json!("2026-04-22T10:00:00Z"));
    }

    #[test]
    fn runtime_inventory_state_response_uses_camel_case_fields() {
        let payload = serde_json::to_value(RuntimeInventoryStateResponse {
            runtime_session_id: "runtime_001".to_string(),
            actor_user_id: "user_001".to_string(),
            backpack_items: vec![RuntimeInventorySlotResponse {
                slot_id: "invslot_001".to_string(),
                container_kind: "backpack".to_string(),
                slot_key: "invslot_001".to_string(),
                item_id: "consumable_heal_potion".to_string(),
                category: "消耗品".to_string(),
                name: "疗伤药".to_string(),
                description: Some("用于恢复少量气血。".to_string()),
                quantity: 2,
                rarity: "common".to_string(),
                tags: vec!["healing".to_string()],
                stackable: true,
                stack_key: "heal_potion".to_string(),
                equipment_slot_id: None,
                source_kind: "treasure_reward".to_string(),
                source_reference_id: Some("treasure_001".to_string()),
                created_at: "2026-04-22T10:00:00Z".to_string(),
                updated_at: "2026-04-22T10:01:00Z".to_string(),
            }],
            equipment_items: vec![],
        })
        .expect("payload should serialize");

        assert_eq!(payload["runtimeSessionId"], json!("runtime_001"));
        assert_eq!(payload["actorUserId"], json!("user_001"));
        assert_eq!(payload["backpackItems"][0]["slotId"], json!("invslot_001"));
        assert_eq!(
            payload["backpackItems"][0]["sourceKind"],
            json!("treasure_reward")
        );
    }
}