import type {
  AdminIntegrity,
  AdminLedger,
  AdminModel,
  AdminProjectRow,
  AdminProvider,
  AdminQualityWord,
  AdminQuotaPolicy,
  AdminReviewAsset,
  AdminTask,
  AdminTaskDetail,
  AdminTeam,
  AdminTeamDetail,
  AdminUser,
  AITask,
  Asset,
  AuthPayload,
  BillingSummary,
  BillingTrend,
  Ledger,
  LoginSession,
  Invitation,
  ModelConfig,
  ModelEntity,
  Notification,
  NotificationList,
  Paginated,
  Product,
  Project,
  RechargeResult,
  ScriptVersion,
  Team,
  TeamMember,
  User,
  UserPreference,
  VoiceoverInfo
} from "./types";

const API_BASE = import.meta.env.VITE_API_BASE_URL || "";
const TOKEN_KEY = "airshelf_token";
const REMEMBER_KEY = "airshelf_remember"; // { username, expireAt } · 勾选「记住我 7 天」时写
const REMEMBER_DAYS = 7;

export type RememberInfo = { username: string; expireAt: number };

export function getRemember(): RememberInfo | null {
  try {
    const raw = localStorage.getItem(REMEMBER_KEY);
    return raw ? (JSON.parse(raw) as RememberInfo) : null;
  } catch {
    return null;
  }
}

// 登录成功后调用:勾选记住我则存用户名 + 7 天过期点;否则清除
export function setRemember(username: string | null, remember: boolean) {
  if (remember && username) {
    localStorage.setItem(REMEMBER_KEY, JSON.stringify({ username, expireAt: Date.now() + REMEMBER_DAYS * 86400000 }));
  } else {
    localStorage.removeItem(REMEMBER_KEY);
  }
}

export class ApiError extends Error {
  status: number;

  constructor(status: number, message: string) {
    super(message);
    this.name = "ApiError";
    this.status = status;
  }
}

export function getToken() {
  // 「记住我 7 天」过期则强制重新登录
  const remembered = getRemember();
  if (remembered && remembered.expireAt && Date.now() > remembered.expireAt) {
    localStorage.removeItem(TOKEN_KEY);
    sessionStorage.removeItem(TOKEN_KEY);
    localStorage.removeItem(REMEMBER_KEY);
    return null;
  }
  // 记住我 → localStorage(跨会话);不记住 → sessionStorage(关浏览器即失效)
  return localStorage.getItem(TOKEN_KEY) || sessionStorage.getItem(TOKEN_KEY);
}

export function setToken(token: string | null, remember = true) {
  localStorage.removeItem(TOKEN_KEY);
  sessionStorage.removeItem(TOKEN_KEY);
  if (!token) return;
  if (remember) localStorage.setItem(TOKEN_KEY, token);
  else sessionStorage.setItem(TOKEN_KEY, token);
}

async function request<T>(path: string, options: RequestInit = {}): Promise<T> {
  const token = getToken();
  const headers = new Headers(options.headers);
  if (!(options.body instanceof FormData)) {
    headers.set("Content-Type", "application/json");
  }
  if (token) headers.set("Authorization", `Token ${token}`);

  const response = await fetch(`${API_BASE}${path}`, { ...options, headers });
  if (!response.ok) {
    const text = await response.text();
    // DRF 错误体是 JSON({"detail": "..."} 或 {field: ["..."]}),提取人话给 toast,别把原始 JSON 怼到用户脸上
    let message = text || `${response.status} ${response.statusText}`;
    try {
      const data = JSON.parse(text) as Record<string, unknown>;
      const first = data.detail ?? data.error ?? data.message ?? Object.values(data)[0];
      if (typeof first === "string") message = first;
      else if (Array.isArray(first) && typeof first[0] === "string") message = first[0];
    } catch {
      // 非 JSON(如 DEBUG 的整页 HTML 报错栈):绝不把整页怼进 toast(会撑爆 / 白屏),只给状态行
      message = `服务器错误 ${response.status} ${response.statusText}`.trim();
    }
    throw new ApiError(response.status, message);
  }
  if (response.status === 204) return undefined as T;
  return response.json() as Promise<T>;
}

export const api = {
  register(payload: { username: string; password: string; email?: string; team_name?: string; invite_code: string }) {
    return request<AuthPayload>("/api/auth/register/", { method: "POST", body: JSON.stringify(payload) });
  },
  // 免登录验码:注册页「填码 → 验过才展开表单」。始终 200,以 valid 标志区分。
  validateInvite(code: string) {
    return request<{ valid: boolean; kind?: "join_team" | "create_team"; role?: string; team_name?: string | null; detail?: string }>(
      "/api/auth/validate-invite/",
      { method: "POST", body: JSON.stringify({ code }) }
    );
  },
  login(payload: { username: string; password: string }) {
    return request<AuthPayload>("/api/auth/login/", { method: "POST", body: JSON.stringify(payload) });
  },
  me() {
    return request<{ user: User; team: Team }>("/api/auth/me/");
  },
  updateProfile(payload: { name?: string; phone?: string; email?: string }) {
    return request<{ user: User; team: Team }>("/api/auth/me/", { method: "PATCH", body: JSON.stringify(payload) });
  },
  changePassword(payload: { old_password: string; new_password: string }) {
    return request<{ token: string }>("/api/auth/me/password/", { method: "POST", body: JSON.stringify(payload) });
  },
  uploadAvatar(formData: FormData) {
    return request<User>("/api/auth/me/avatar/", { method: "POST", body: formData });
  },
  resetAvatar() {
    return request<User>("/api/auth/me/avatar/", { method: "DELETE" });
  },
  deleteAsset(id: string) {
    return request<void>(`/api/assets/${id}/`, { method: "DELETE" });
  },
  preferences() {
    return request<UserPreference>("/api/auth/me/preferences/");
  },
  updatePreferences(payload: Partial<UserPreference>) {
    return request<UserPreference>("/api/auth/me/preferences/", { method: "PUT", body: JSON.stringify(payload) });
  },
  loginSessions() {
    return request<LoginSession[]>("/api/auth/me/sessions/");
  },
  revokeSession(id: string) {
    return request<{ revoked: number }>(`/api/auth/me/sessions/${id}/revoke/`, { method: "POST" });
  },
  revokeOtherSessions() {
    return request<{ token: string }>("/api/auth/me/sessions/revoke-others/", { method: "POST" });
  },
  logout() {
    return request<void>("/api/auth/logout/", { method: "POST" });
  },
  teamMembers() {
    return request<TeamMember[]>("/api/auth/team/members/");
  },
  createTeamMember(payload: {
    username: string;
    password: string;
    name?: string;
    email?: string;
    role?: string;
    monthly_credit_limit?: number | string;
  }) {
    return request<TeamMember>("/api/auth/team/members/", { method: "POST", body: JSON.stringify(payload) });
  },
  updateTeamMember(id: string, payload: { role?: string; monthly_credit_limit?: number | string; name?: string }) {
    return request<TeamMember>(`/api/auth/team/members/${id}/`, { method: "PATCH", body: JSON.stringify(payload) });
  },
  removeTeamMember(id: string) {
    return request<void>(`/api/auth/team/members/${id}/`, { method: "DELETE" });
  },
  resetMemberPassword(id: string, password: string) {
    return request<void>(`/api/auth/team/members/${id}/password/`, {
      method: "POST",
      body: JSON.stringify({ password })
    });
  },
  listInvitations() {
    return request<Invitation[]>("/api/auth/team/invitations/");
  },
  createInvitation(payload: { role?: string; email?: string; monthly_credit_limit?: number | string }) {
    return request<Invitation>("/api/auth/team/invitations/", { method: "POST", body: JSON.stringify(payload) });
  },
  revokeInvitation(id: string) {
    return request<Invitation>(`/api/auth/team/invitations/${id}/revoke/`, { method: "POST" });
  },
  products() {
    return request<Paginated<Product>>("/api/products/");
  },
  product(id: string) {
    return request<Product>(`/api/products/${id}/`);
  },
  createProduct(payload: {
    title?: string;
    brand?: string;
    category?: string;
    target_audience?: string;
    description?: string;
    specs?: Record<string, unknown>;
    selling_points?: Array<{ title: string; detail: string; sort_order: number }>;
    // upload-first:创建时带上已传进桶的图(cover_asset = 主图 asset id;images = 全部图)
    cover_asset?: string;
    images?: Array<{ asset: string; sort_order: number; is_primary?: boolean }>;
  }) {
    return request<Product>("/api/products/", { method: "POST", body: JSON.stringify(payload) });
  },
  updateProduct(id: string, payload: Partial<Product>) {
    return request<Product>(`/api/products/${id}/`, { method: "PATCH", body: JSON.stringify(payload) });
  },
  uploadProductImage(productId: string, formData: FormData) {
    return request<Product>(`/api/products/${productId}/images/`, { method: "POST", body: formData });
  },
  deleteProductImage(productId: string, imageId: string) {
    return request<Product>(`/api/products/${productId}/images/${imageId}/`, { method: "DELETE" });
  },
  deleteProduct(id: string) {
    // 软删 = 进垃圾桶(后端 status→archived,可恢复)
    return request<void>(`/api/products/${id}/`, { method: "DELETE" });
  },
  // 商品详情结构化素材(角色/商品图/图片成品/项目包)
  productMaterials(id: string) {
    return request<import("./types").ProductMaterials>(`/api/products/${id}/materials/`);
  },
  productsTrash() {
    return request<Paginated<Product>>("/api/products/trash/");
  },
  restoreProduct(id: string) {
    return request<Product>(`/api/products/${id}/restore/`, { method: "POST" });
  },
  purgeProduct(id: string) {
    // 彻底删除(不可恢复)
    return request<void>(`/api/products/${id}/purge/`, { method: "DELETE" });
  },
  projects() {
    return request<Paginated<Project>>("/api/projects/");
  },
  project(id: string) {
    return request<Project>(`/api/projects/${id}/`);
  },
  // 本项目在途的基础资产出图任务(刷新后据此重建「生成中」占位卡 loading)
  pendingAssets(id: string) {
    return request<{ pending: Array<{ id: string; kind: string; label: string; is_triview: boolean; status: string }> }>(
      `/api/projects/${id}/pending-assets/`
    );
  },
  createProject(payload: { name: string; product: string; metadata?: Record<string, unknown> }) {
    return request<Project>("/api/projects/", { method: "POST", body: JSON.stringify(payload) });
  },
  // 整体替换 metadata —— 调用方务必先展开现有 project.metadata 再合并,别把别的 key 冲掉
  updateProject(id: string, payload: { name?: string; metadata?: Record<string, unknown> }) {
    return request<Project>(`/api/projects/${id}/`, { method: "PATCH", body: JSON.stringify(payload) });
  },
  deleteProject(id: string) {
    return request<void>(`/api/projects/${id}/`, { method: "DELETE" });
  },
  // 对话式脚本 agent · 流式(SSE)。逐帧回调 onEvent:tool(工具卡)/delta(思考前言)/draft/saved/done/error。
  // 用 fetch + ReadableStream 消费 text/event-stream(EventSource 只支持 GET,这里要 POST 带 body)。
  async agentScriptStream(
    projectId: string,
    payload: {
      mode?: "auto" | "theme" | "revise";
      prompt?: string;
      model_config_id?: string;
      selling_point_ids?: string[];
      base_version_id?: string;
      aspect_ratio?: string;
      total_duration?: number;
      target_index?: number;
    },
    onEvent: (evt: { type: string; [k: string]: unknown }) => void,
    signal?: AbortSignal
  ): Promise<void> {
    const token = getToken();
    const headers = new Headers({ "Content-Type": "application/json", Accept: "text/event-stream" });
    if (token) headers.set("Authorization", `Token ${token}`);
    const response = await fetch(`${API_BASE}/api/projects/${projectId}/script-agent-stream/`, {
      method: "POST",
      headers,
      body: JSON.stringify(payload),
      signal // 停止按钮:abort 这个 signal 即掐断流(后端检测断连会自动释放预扣额度)
    });
    if (!response.ok || !response.body) {
      const text = await response.text().catch(() => "");
      throw new ApiError(response.status, text || "脚本流式生成失败");
    }
    const reader = response.body.getReader();
    const decoder = new TextDecoder("utf-8");
    let buffer = "";
    for (;;) {
      const { done, value } = await reader.read();
      if (done) break;
      buffer += decoder.decode(value, { stream: true });
      let sep: number;
      // SSE 帧以空行分隔(\n\n);每帧取 data: 行解析
      while ((sep = buffer.indexOf("\n\n")) !== -1) {
        const frame = buffer.slice(0, sep);
        buffer = buffer.slice(sep + 2);
        const dataLine = frame.split("\n").find((l) => l.startsWith("data:"));
        if (!dataLine) continue;
        try {
          onEvent(JSON.parse(dataLine.slice(5).trim()));
        } catch {
          /* 跳过解析失败的帧 */
        }
      }
    }
  },
  adoptScript(projectId: string, script_version_id: string) {
    return request<ScriptVersion>(`/api/projects/${projectId}/adopt-script/`, {
      method: "POST",
      body: JSON.stringify({ script_version_id })
    });
  },
  // 独立实体提取(**异步**):只提交任务、秒回 task_id(慢活在 worker 跑,不再 502);已有在途则复用(防重复扣费)。
  // 进度/结果用 extractStatus 轮询。商品不提(参考图层用真实主图)。
  extractEntities(projectId: string) {
    return request<{ task_id: string; status: string }>(`/api/projects/${projectId}/extract-entities/`, { method: "POST" });
  },
  // 实体提取进度:running=有在途任务(刷新后据此重建 loading);否则读最近一次成败,成功回带 entities 供「提取+生成」继续出图。
  extractStatus(projectId: string) {
    return request<{
      running: boolean;
      status: string;
      error: string;
      entities: Array<{ id: string; type: "character" | "scene"; name: string; visual_prompt: string; ref_index: number }>;
    }>(`/api/projects/${projectId}/extract-status/`);
  },
  updateScriptSegment(projectId: string, payload: { segment_id: string; narration?: string; visual_prompt?: string; duration_seconds?: number }) {
    return request<ScriptVersion>(`/api/projects/${projectId}/update-script-segment/`, { method: "POST", body: JSON.stringify(payload) });
  },
  addScriptSegment(projectId: string, payload: { after_segment_id: string; narration?: string; visual_prompt?: string; duration_seconds?: number }) {
    return request<ScriptVersion>(`/api/projects/${projectId}/add-script-segment/`, { method: "POST", body: JSON.stringify(payload) });
  },
  deleteScriptSegment(projectId: string, payload: { segment_id: string }) {
    return request<ScriptVersion>(`/api/projects/${projectId}/delete-script-segment/`, { method: "POST", body: JSON.stringify(payload) });
  },
  // 单条分镜重跑:后端只重写指定 segment(可带 instruction 微调),返回更新后的 ScriptVersion
  rerunScriptSegment(projectId: string, payload: { segment_id: string; instruction?: string }) {
    return request<ScriptVersion>(`/api/projects/${projectId}/rerun-script-segment/`, { method: "POST", body: JSON.stringify(payload) });
  },
  adoptVideoVersion(projectId: string, payload: { video_segment_id: string; version_id: string }) {
    return request<Project>(`/api/projects/${projectId}/adopt-video-version/`, { method: "POST", body: JSON.stringify(payload) });
  },
  generateVoiceover(projectId: string, payload: { items: Array<{ index: number; text: string }>; voice_type?: string; speed_ratio?: number }) {
    return request<{ voiceover: VoiceoverInfo }>(`/api/projects/${projectId}/generate-voiceover/`, { method: "POST", body: JSON.stringify(payload) });
  },
  // 异步:提交后秒回 RESERVED 任务,再用 generateImageStatus 轮询取结果(慢出图在 worker 跑,Web 不被占住)
  generateBaseAsset(projectId: string, payload: { kind: "product" | "person" | "scene"; prompt: string; label?: string }) {
    return request<{ task: { id: string; status: string } }>(`/api/projects/${projectId}/generate-base-asset/`, { method: "POST", body: JSON.stringify(payload) });
  },
  adoptBaseAsset(projectId: string, payload: { group_id: string; asset_id: string }) {
    return request(`/api/projects/${projectId}/adopt-base-asset/`, { method: "POST", body: JSON.stringify(payload) });
  },
  // 显性采用/未采用某角色/场景组(下游只取已采用)
  setBaseAssetAdopt(projectId: string, payload: { group_id: string; state: "adopted" | "unadopted" }) {
    return request(`/api/projects/${projectId}/set-base-asset-adopt/`, { method: "POST", body: JSON.stringify(payload) });
  },
  // 删除某角色/场景资产组(连带其三视图组)
  deleteBaseAsset(projectId: string, groupId: string) {
    return request(`/api/projects/${projectId}/delete-base-asset/`, { method: "POST", body: JSON.stringify({ group_id: groupId }) });
  },
  // 流程步骤4 · 用演员库现有资产替换基础资产卡(挂为候选并采用)
  // seed 占位卡还没 group:不传 group_id,改传 kind+label,后端按 label 命中/新建实体组再挂(不出图)
  attachBaseAsset(projectId: string, payload: { group_id?: string; asset_id: string; kind?: "product" | "person" | "scene"; label?: string }) {
    return request(`/api/projects/${projectId}/attach-base-asset/`, { method: "POST", body: JSON.stringify(payload) });
  },
  // 流程步骤4 · 据某一版立绘资产生成它配套的三视图(image_edit 锁角色一致性,绑定该立绘 asset)
  // 异步:提交后秒回 RESERVED 任务,再用 generateImageStatus 轮询取结果(慢 image_edit 在 worker 跑)
  generateTriview(projectId: string, payload: { portrait_asset_id: string }) {
    return request<{ task: { id: string; status: string } }>(`/api/projects/${projectId}/generate-triview/`, { method: "POST", body: JSON.stringify(payload) });
  },
  // 轮询本团队真人资产的火山审核状态(绿盾 active / 红标 failed),刷新基础资产趴徽章
  pollReviews(projectId: string) {
    return request<{ reviews: Record<string, string> }>(`/api/projects/${projectId}/poll-reviews/`, { method: "POST" });
  },
  generateStoryboard(projectId: string, payload: { prompt: string }) {
    return request(`/api/projects/${projectId}/generate-storyboard/`, { method: "POST", body: JSON.stringify(payload) });
  },
  pollStoryboard(projectId: string) {
    return request<{ status: "generating" | "succeeded" | "failed"; done: number; total: number; version_id: string; error?: string }>(
      `/api/projects/${projectId}/poll-storyboard/`,
      { method: "POST" }
    );
  },
  skipStoryboard(projectId: string) {
    return request<Project>(`/api/projects/${projectId}/skip-storyboard/`, { method: "POST" });
  },
  // 单场重跑:只重出该 shot 的分镜图(新增一条历史版本并采用)
  rerunStoryboardShot(projectId: string, shotId: string, prompt?: string) {
    return request(`/api/projects/${projectId}/rerun-storyboard-shot/`, { method: "POST", body: JSON.stringify({ shot_id: shotId, prompt: prompt || "" }) });
  },
  // 采用某场的某个历史版本(切换该场分镜图)
  adoptStoryboardShotVersion(projectId: string, shotId: string, versionId: string) {
    return request<Project>(`/api/projects/${projectId}/adopt-storyboard-shot-version/`, { method: "POST", body: JSON.stringify({ shot_id: shotId, version_id: versionId }) });
  },
  submitVideo(projectId: string, payload: { video_segment_id: string; prompt: string }) {
    return request<Project>(`/api/projects/${projectId}/submit-video-segment/`, { method: "POST", body: JSON.stringify(payload) });
  },
  // 点生成视频前的过审闸:列出未过审的人物立绘/故事板分镜。video_segment_id 给定=只校验该段,不给=全部未出片段。
  videoReviewPrecheck(projectId: string, videoSegmentId?: string) {
    return request<{ blockers: Array<{ video_segment_id: string; sort_order: number; scene_no: number; kind: "person" | "storyboard"; name: string; asset_id: string; review_status: string }> }>(
      `/api/projects/${projectId}/video-review-precheck/`,
      { method: "POST", body: JSON.stringify(videoSegmentId ? { video_segment_id: videoSegmentId } : {}) },
    );
  },
  pollVideo(projectId: string, video_segment_id: string) {
    return request(`/api/projects/${projectId}/poll-video-segment/`, {
      method: "POST",
      body: JSON.stringify({ video_segment_id })
    });
  },
  submitExport(projectId: string) {
    return request(`/api/projects/${projectId}/submit-export/`, { method: "POST" });
  },
  pollExport(projectId: string) {
    return request<import("./types").ExportPoll>(`/api/projects/${projectId}/poll-export/`, { method: "POST" });
  },
  uploadVideoSegment(projectId: string, segmentId: string, file: File) {
    const form = new FormData();
    form.append("video_segment_id", segmentId);
    form.append("file", file);
    return request<Project>(`/api/projects/${projectId}/upload-video-segment/`, { method: "POST", body: form });
  },
  uploadBgm(projectId: string, file: File, volume?: number) {
    const form = new FormData();
    form.append("file", file);
    if (volume != null) form.append("volume", String(volume));
    return request<Project>(`/api/projects/${projectId}/upload-bgm/`, { method: "POST", body: form });
  },
  saveTimeline(projectId: string, payload: import("./types").TimelineSavePayload) {
    return request<Project>(`/api/projects/${projectId}/save-timeline/`, { method: "POST", body: JSON.stringify(payload) });
  },
  assets() {
    return request<Paginated<Asset>>("/api/assets/");
  },
  // 服务端分页+过滤的资产列表(各页按需懒加载,不再前端取全量再切片)。
  assetsPage(params: {
    tab?: string; category?: string; source?: string; asset_type?: string;
    product?: string; q?: string; ordering?: string; page?: number; pageSize?: number;
    meta?: Record<string, string>;
  } = {}) {
    const qs = new URLSearchParams();
    const { meta, pageSize, ...rest } = params;
    for (const [k, v] of Object.entries(rest)) if (v !== undefined && v !== "" && v !== null) qs.set(k, String(v));
    if (pageSize) qs.set("page_size", String(pageSize));
    if (meta) for (const [k, v] of Object.entries(meta)) if (v) qs.set(`m_${k}`, v);
    return request<Paginated<Asset>>(`/api/assets/?${qs.toString()}`);
  },
  // 图片趴(模特上身图/平台套图/自由创作)按生成批次成组分页:每批一张卡(封面+张数),点开看整批图
  assetBatches(params: {
    tab?: string; source?: string; q?: string; ordering?: string; page?: number; pageSize?: number;
    meta?: Record<string, string>;
  } = {}) {
    const qs = new URLSearchParams();
    const { meta, pageSize, ...rest } = params;
    for (const [k, v] of Object.entries(rest)) if (v !== undefined && v !== "" && v !== null) qs.set(k, String(v));
    if (pageSize) qs.set("page_size", String(pageSize));
    if (meta) for (const [k, v] of Object.entries(meta)) if (v) qs.set(`m_${k}`, v);
    return request<Paginated<import("./types").AssetBatch>>(`/api/assets/batches/?${qs.toString()}`);
  },
  // 资产库各 tab 计数(tab 徽标用,不必取全量)
  assetSummary() {
    return request<Record<string, number>>("/api/assets/summary/");
  },
  // 视频成品:按项目素材包分组(每项目一包,含片段列表)
  videoPacks() {
    return request<import("./types").VideoPack[]>("/api/assets/video-packs/");
  },
  // 手动兜底:把单个送审类素材(角色/三视图/分镜)送火山审核(用户点灰盾「待审核」时)
  submitAssetReview(id: string) {
    return request<{ review_status: string; review_error: string }>(`/api/assets/${id}/submit-review/`, { method: "POST" });
  },
  // 单图「加入资产库 / 取消加入」:置 in_library。加入 → 出现在资产库列表;取消 → 移出列表。
  // 资产生成时已落库并扣费,此口只控制是否进资产库展示列表,不增删真实资产、不二次扣费。
  setAssetLibrary(id: string, inLibrary: boolean) {
    return request<{ id: string; in_library: boolean }>(`/api/assets/${id}/set-library/`, { method: "POST", body: JSON.stringify({ in_library: inLibrary }) });
  },
  // 某 tab 下真实存在的筛选项(来源/类型/指定 metadata 键取值),供下拉「只列真有的」
  assetFacets(tab?: string, metaKeys: string[] = []) {
    const qs = new URLSearchParams();
    if (tab) qs.set("tab", tab);
    if (metaKeys.length) qs.set("meta_keys", metaKeys.join(","));
    return request<{ sources: string[]; kinds: string[]; metadata: Record<string, string[]> }>(`/api/assets/facets/?${qs.toString()}`);
  },
  // 导出全部:把项目所有已采用视频片段打成一个 zip 下载(后端逐段从 TOS 拉取打包)
  async exportProjectClips(projectId: string): Promise<Blob> {
    const token = getToken();
    const res = await fetch(`${API_BASE}/api/projects/${projectId}/export-clips/`, {
      headers: token ? { Authorization: `Token ${token}` } : undefined
    });
    if (!res.ok) {
      let msg = `导出失败 (${res.status})`;
      try { msg = (await res.json()).detail || msg; } catch { /* 非 JSON 错误体 */ }
      throw new ApiError(res.status, msg);
    }
    return res.blob();
  },
  // 经后端同源代理取资产原始文件(TOS 未配 CORS,浏览器抽帧/解码必须同源)
  async fetchAssetBlob(id: string): Promise<Blob> {
    const token = getToken();
    const response = await fetch(`${API_BASE}/api/assets/${id}/raw/`, {
      headers: token ? { Authorization: `Token ${token}` } : undefined
    });
    if (!response.ok) throw new ApiError(response.status, `fetch asset raw failed: ${response.status}`);
    return response.blob();
  },
  // 跟随 DRF 分页 next 取全部资产 —— 商品图/AI 素材/资产库都靠 asset.id 在这份列表里查 preview_url,
  // 只取第 1 页(20 条)会让第 20 条之后的资产解析不到图、渲染成空占位。
  async allAssets(): Promise<Asset[]> {
    // 一次大页(page_size=200)尽量取全;若还有多页,并行取剩余页(不再逐页串行等,根治整页刷新慢)
    const SIZE = 200;
    const first = await request<Paginated<Asset>>(`/api/assets/?page_size=${SIZE}`);
    const out: Asset[] = [...first.results];
    const pageSize = first.results.length || SIZE; // 后端若忽略 page_size,按实际页大小算页数,逻辑仍正确
    const totalPages = pageSize > 0 ? Math.ceil((first.count || out.length) / pageSize) : 1;
    if (totalPages <= 1) return out;
    const rest = await Promise.all(
      Array.from({ length: totalPages - 1 }, (_, i) =>
        request<Paginated<Asset>>(`/api/assets/?page_size=${SIZE}&page=${i + 2}`)
          .then((p) => p.results)
          .catch(() => [] as Asset[])
      )
    );
    rest.forEach((r) => out.push(...r));
    return out;
  },
  uploadAsset(formData: FormData) {
    return request<Asset>("/api/assets/upload/", { method: "POST", body: formData });
  },
  // 流程步骤4 · 给人物/资产改名(添加人物工作台命名 → PATCH 写回 name)
  updateAsset(id: string, payload: { name?: string; description?: string }) {
    return request<Asset>(`/api/assets/${id}/`, { method: "PATCH", body: JSON.stringify(payload) });
  },
  // 模特库:列出(本团队 ∪ 官方模板);tab=official 只看官方、mine 只看自建
  listModels(params: { tab?: "official" | "mine"; q?: string; pageSize?: number } = {}) {
    const qs = new URLSearchParams();
    if (params.tab) qs.set("tab", params.tab);
    if (params.q) qs.set("q", params.q);
    qs.set("page_size", String(params.pageSize ?? 200));
    return request<Paginated<ModelEntity>>(`/api/models/?${qs.toString()}`);
  },
  // 真人上传:一张人像图 → 建 model_portrait 资产 + Model 实体
  uploadModel(formData: FormData) {
    return request<ModelEntity>("/api/models/upload/", { method: "POST", body: formData });
  },
  // 删除模特(软删;官方模特不可删)
  deleteModel(id: string) {
    return request<void>(`/api/models/${id}/`, { method: "DELETE" });
  },
  billingSummary() {
    return request<BillingSummary>("/api/billing/summary/");
  },
  ledgers(page = 1, pageSize = 10) {
    return request<{ count: number; page: number; page_size: number; results: Ledger[] }>(`/api/billing/ledgers/?page=${page}&page_size=${pageSize}`);
  },
  billingTrend(range?: "day" | "week" | "month") {
    return request<BillingTrend>(`/api/billing/trend/${range ? `?range=${range}` : ""}`);
  },
  modelConfigs() {
    return request<Paginated<ModelConfig>>("/api/ai/models/");
  },
  aiTasks() {
    // 取一大页(后端上限 200):任务中心要按真实总量算 全部/已完成/失败 三个 tab 数,
    // 只取默认首页(20 条)会把统计算偏,甚至误显示「全部失败」。
    return request<Paginated<AITask>>("/api/ai/tasks/?page_size=200");
  },
  // 异步生图:提交后秒级返回任务列表(慢出图在 worker 跑),再用 generateImageStatus 轮询取结果
  submitGenerateImage(payload: { prompt: string; mode?: "image" | "model" | "cover"; count?: number; product_id?: string; reference_product?: boolean; model_id?: string; model_entity_id?: string; ratio?: string; image_model?: string }) {
    return request<{ tasks: { id: string; status: string }[] }>("/api/ai/generate-image/", { method: "POST", body: JSON.stringify(payload) });
  },
  generateImageStatus(ids: string[]) {
    return request<{ tasks: { id: string; status: string; error_message: string; assets: Asset[] }[] }>(`/api/ai/generate-image/?ids=${encodeURIComponent(ids.join(","))}`);
  },
  recharge(payload: { amount: number | string; bonus?: number | string; channel?: string }) {
    return request<RechargeResult>("/api/billing/recharge/", { method: "POST", body: JSON.stringify(payload) });
  },
  // 收件箱按页拉取 —— 滚动加载逐页向后端要(tab/搜索 走服务端,计数随响应回来)
  listNotifications(params?: { type?: string; unread?: boolean; search?: string; page?: number; pageSize?: number }) {
    const query = new URLSearchParams();
    if (params?.type && params.type !== "all") query.set("type", params.type);
    if (params?.unread) query.set("unread", "1");
    if (params?.search) query.set("search", params.search);
    if (params?.page) query.set("page", String(params.page));
    if (params?.pageSize) query.set("page_size", String(params.pageSize));
    const qs = query.toString();
    return request<NotificationList>(`/api/ops/notifications/${qs ? `?${qs}` : ""}`);
  },
  // 侧边栏徽标(unread_count)+ 团队动态(只展示最近 6 条)用。只取第 1 页 100 条即足够,
  // count 用后端真实总数(给「共 N」显示),不再随消息增长逐页翻全部(原来 O(N) 拖慢每次刷新)。
  // 注:不参与收件箱滚动渲染——收件箱走 listNotifications 自己的服务端分页。
  async allNotifications(): Promise<NotificationList> {
    return request<NotificationList>(`/api/ops/notifications/?page_size=100`);
  },
  // 侧边栏未读徽标:只要 unread_count,取 1 条即可(不为徽标拉 100 条)
  notificationsBadge() {
    return request<NotificationList>(`/api/ops/notifications/?page_size=1`);
  },
  markAllNotificationsRead() {
    return request<{ updated: number; unread_count: number }>("/api/ops/notifications/mark-all-read/", {
      method: "POST"
    });
  },
  markNotificationRead(id: string) {
    return request<Notification>(`/api/ops/notifications/${id}/mark-read/`, { method: "POST" });
  },
  archiveNotification(id: string) {
    // 后端 archive 端点返回 204 无 body
    return request<void>(`/api/ops/notifications/${id}/archive/`, { method: "POST" });
  }
};

// 平台超管后台 API(/api/admin/*,全程 IsPlatformAdmin)。与团队级 api 分层,便于权限收敛。
export const adminApi = {
  invitations(params?: { kind?: string; status?: string; search?: string; page?: number; page_size?: number }) {
    const qs = new URLSearchParams();
    if (params?.kind) qs.set("kind", params.kind);
    if (params?.status) qs.set("status", params.status);
    if (params?.search) qs.set("search", params.search);
    if (params?.page) qs.set("page", String(params.page));
    if (params?.page_size) qs.set("page_size", String(params.page_size));
    const q = qs.toString();
    return request<Paginated<Invitation>>(`/api/admin/invitations/${q ? `?${q}` : ""}`);
  },
  createInvite(payload?: { email?: string }) {
    return request<Invitation>("/api/admin/invitations/", { method: "POST", body: JSON.stringify(payload || {}) });
  },
  revokeInvite(id: string) {
    return request<Invitation>(`/api/admin/invitations/${id}/revoke/`, { method: "POST" });
  },
  teams(params?: { status?: string; search?: string; page?: number; page_size?: number }) {
    const qs = new URLSearchParams();
    if (params?.status) qs.set("status", params.status);
    if (params?.search) qs.set("search", params.search);
    if (params?.page) qs.set("page", String(params.page));
    if (params?.page_size) qs.set("page_size", String(params.page_size));
    const q = qs.toString();
    return request<Paginated<AdminTeam>>(`/api/admin/teams/${q ? `?${q}` : ""}`);
  },
  teamDetail(id: string) {
    return request<AdminTeamDetail>(`/api/admin/teams/${id}/`);
  },
  toggleTeam(id: string) {
    return request<AdminTeam>(`/api/admin/teams/${id}/toggle/`, { method: "POST" });
  },
  users(params?: { status?: string; search?: string; page?: number; page_size?: number }) {
    const qs = new URLSearchParams();
    if (params?.status) qs.set("status", params.status);
    if (params?.search) qs.set("search", params.search);
    if (params?.page) qs.set("page", String(params.page));
    if (params?.page_size) qs.set("page_size", String(params.page_size));
    const q = qs.toString();
    return request<Paginated<AdminUser>>(`/api/admin/users/${q ? `?${q}` : ""}`);
  },
  toggleUser(id: string) {
    return request<AdminUser>(`/api/admin/users/${id}/toggle/`, { method: "POST" });
  },
  resetUserPassword(id: string, password: string) {
    return request<void>(`/api/admin/users/${id}/reset-password/`, { method: "POST", body: JSON.stringify({ password }) });
  },
  qualityWords() {
    return request<AdminQualityWord[]>("/api/admin/quality-words/");
  },
  createQualityWord(payload: { stage: string; text: string; sort?: number; slot?: string }) {
    return request<AdminQualityWord>("/api/admin/quality-words/", { method: "POST", body: JSON.stringify(payload) });
  },
  updateQualityWord(id: string, payload: { text?: string; sort?: number; enabled?: boolean }) {
    return request<AdminQualityWord>(`/api/admin/quality-words/${id}/`, { method: "PATCH", body: JSON.stringify(payload) });
  },
  deleteQualityWord(id: string) {
    return request<void>(`/api/admin/quality-words/${id}/`, { method: "DELETE" });
  },
  // 生图/视频提示词模板(视频线 6 条):列表 + 改正文/比例/启用
  promptTemplates() {
    return request<import("./types").AdminPromptTemplate[]>("/api/admin/prompt-templates/");
  },
  updatePromptTemplate(id: string, payload: { template?: string; ratio?: string; enabled?: boolean }) {
    return request<import("./types").AdminPromptTemplate>(`/api/admin/prompt-templates/${id}/`, { method: "PATCH", body: JSON.stringify(payload) });
  },
  assetReviews(params?: { review_status?: string; search?: string; page?: number; page_size?: number }) {
    const qs = new URLSearchParams();
    if (params?.review_status) qs.set("review_status", params.review_status);
    if (params?.search) qs.set("search", params.search);
    if (params?.page) qs.set("page", String(params.page));
    if (params?.page_size) qs.set("page_size", String(params.page_size));
    const q = qs.toString();
    return request<Paginated<AdminReviewAsset>>(`/api/admin/asset-reviews/${q ? `?${q}` : ""}`);
  },
  submitReviews(assetIds: string[]) {
    return request<{ submitted: number; statuses: Record<string, string> }>(
      "/api/admin/asset-reviews/submit/",
      { method: "POST", body: JSON.stringify({ asset_ids: assetIds }) }
    );
  },
  pollReviews(assetIds?: string[]) {
    return request<{ polled: number; statuses: Record<string, string> }>(
      "/api/admin/asset-reviews/poll/",
      { method: "POST", body: JSON.stringify(assetIds ? { asset_ids: assetIds } : {}) }
    );
  },
  tasks(params?: { status?: string; task_type?: string; team?: string; anomaly?: string; page?: number; page_size?: number }) {
    const qs = new URLSearchParams();
    if (params?.status) qs.set("status", params.status);
    if (params?.task_type) qs.set("task_type", params.task_type);
    if (params?.team) qs.set("team", params.team);
    if (params?.anomaly) qs.set("anomaly", params.anomaly);
    if (params?.page) qs.set("page", String(params.page));
    if (params?.page_size) qs.set("page_size", String(params.page_size));
    const q = qs.toString();
    return request<Paginated<AdminTask>>(`/api/admin/tasks/${q ? `?${q}` : ""}`);
  },
  taskDetail(id: string) {
    return request<AdminTaskDetail>(`/api/admin/tasks/${id}/`);
  },
  retryTask(id: string) {
    return request<{ retried: boolean; task_id: string }>(`/api/admin/tasks/${id}/retry/`, { method: "POST" });
  },
  ledgers(params?: { ledger_type?: string; team?: string; page?: number; page_size?: number }) {
    const qs = new URLSearchParams();
    if (params?.ledger_type) qs.set("ledger_type", params.ledger_type);
    if (params?.team) qs.set("team", params.team);
    if (params?.page) qs.set("page", String(params.page));
    if (params?.page_size) qs.set("page_size", String(params.page_size));
    const q = qs.toString();
    return request<Paginated<AdminLedger>>(`/api/admin/ledgers/${q ? `?${q}` : ""}`);
  },
  adjustCredit(payload: { team: string; amount: string; reason: string }) {
    return request<AdminLedger>("/api/admin/ledgers/adjust/", { method: "POST", body: JSON.stringify(payload) });
  },
  quotaPolicies(params?: { team?: string; page_size?: number }) {
    const qs = new URLSearchParams();
    if (params?.team) qs.set("team", params.team);
    if (params?.page_size) qs.set("page_size", String(params.page_size));
    const q = qs.toString();
    return request<Paginated<AdminQuotaPolicy>>(`/api/admin/quota-policies/${q ? `?${q}` : ""}`);
  },
  createQuotaPolicy(payload: { team: string; monthly_limit?: string | null; project_limit?: string | null; per_task_limit?: string | null; is_active?: boolean }) {
    return request<AdminQuotaPolicy>("/api/admin/quota-policies/", { method: "POST", body: JSON.stringify(payload) });
  },
  updateQuotaPolicy(id: string, payload: { monthly_limit?: string | null; project_limit?: string | null; per_task_limit?: string | null; is_active?: boolean }) {
    return request<AdminQuotaPolicy>(`/api/admin/quota-policies/${id}/`, { method: "PATCH", body: JSON.stringify(payload) });
  },
  deleteQuotaPolicy(id: string) {
    return request<void>(`/api/admin/quota-policies/${id}/`, { method: "DELETE" });
  },
  providers() {
    return request<AdminProvider[]>("/api/admin/providers/");
  },
  createProvider(payload: { name: string; display_name: string; base_url?: string; api_key?: string; status?: string }) {
    return request<AdminProvider>("/api/admin/providers/", { method: "POST", body: JSON.stringify(payload) });
  },
  updateProvider(id: string, payload: Record<string, unknown>) {
    return request<AdminProvider>(`/api/admin/providers/${id}/`, { method: "PATCH", body: JSON.stringify(payload) });
  },
  deleteProvider(id: string) {
    return request<void>(`/api/admin/providers/${id}/`, { method: "DELETE" });
  },
  models(params?: { provider?: string; capability?: string }) {
    const qs = new URLSearchParams();
    if (params?.provider) qs.set("provider", params.provider);
    if (params?.capability) qs.set("capability", params.capability);
    const q = qs.toString();
    return request<AdminModel[]>(`/api/admin/models/${q ? `?${q}` : ""}`);
  },
  createModel(payload: { provider: string; name: string; display_name: string; capability: string; endpoint?: string; unit_price?: string; status?: string }) {
    return request<AdminModel>("/api/admin/models/", { method: "POST", body: JSON.stringify(payload) });
  },
  updateModel(id: string, payload: Record<string, unknown>) {
    return request<AdminModel>(`/api/admin/models/${id}/`, { method: "PATCH", body: JSON.stringify(payload) });
  },
  deleteModel(id: string) {
    return request<void>(`/api/admin/models/${id}/`, { method: "DELETE" });
  },
  setDefaultModel(id: string) {
    return request<AdminModel>(`/api/admin/models/${id}/set-default/`, { method: "POST" });
  },
  adminProjects(params?: { status?: string; search?: string; page?: number; page_size?: number }) {
    const qs = new URLSearchParams();
    if (params?.status) qs.set("status", params.status);
    if (params?.search) qs.set("search", params.search);
    if (params?.page) qs.set("page", String(params.page));
    if (params?.page_size) qs.set("page_size", String(params.page_size));
    const q = qs.toString();
    return request<Paginated<AdminProjectRow>>(`/api/admin/projects/${q ? `?${q}` : ""}`);
  },
  integrity() {
    return request<AdminIntegrity>("/api/admin/integrity/");
  }
};