/**
 * 剪辑计划 API — 对接后端 Edit Plans Schema
 * 字段名严格匹配后端 API 响应
 */
import apiClient from "./client";
import type { AssetItem } from "./assets";

/* ============================================================
 * 后端 API 类型（严格匹配后端 Schema）
 * ============================================================ */

/** 剪辑计划状态枚举 */
export type EditPlanStatus =
  "draft" | "editing" | "rendering" | "completed" | "failed";

/** 剪辑计划（后端响应） */
export interface EditPlan {
  id: string;
  template_id: string;
  name: string;
  status: EditPlanStatus;
  total_duration: number;
  config: Record<string, unknown>;
  created_at: string;
  updated_at: string;
}

/** 创建剪辑计划请求（后端要求 template_id + name 必填） */
export interface CreateEditPlanRequest {
  template_id: string;
  name: string;
  config?: Record<string, unknown>;
  total_duration?: number;
  /** 来源剪辑计划 ID（从剪辑计划跳转到一键生成时关联） */
  source_edit_plan_id?: string;
}

/** 更新剪辑计划请求 */
export interface UpdateEditPlanRequest {
  name?: string;
  config?: Record<string, unknown>;
  total_duration?: number;
  status?: EditPlanStatus;
}

/** 生成响应 */
export interface GenerateResponse {
  plan_id: string;
  plan_status: EditPlanStatus;
  generation_task_id: string;
  clip_count: number;
}

/** 剪辑计划关联的生成记录 */
export interface EditPlanGeneration {
  id: string;
  edit_plan_id: string;
  generation_task_id: string;
  status: EditPlanStatus;
  created_at: string;
  updated_at: string;
}

/** 片段生成状态 */
export interface ClipStatusItem {
  clip_id: string;
  clip_type: string;
  order: number;
  status: string;
  asset_id?: string;
  text_content?: string;
  duration?: number;
}

/** 生成状态轮询响应 */
export interface GenerationStatusResponse {
  plan_id: string;
  plan_status: EditPlanStatus;
  generation_task_id?: string;
  clips: ClipStatusItem[];
}

/* ============================================================
 * AI 推荐 & 封面生成（任务 3.09）
 * ============================================================ */

/** AI 推荐请求 */
export interface AIRecommendRequest {
  asset_ids: string[];
  editing_mode?: string;
  target_duration?: number;
}

/** AI 推荐单个片段 */
export interface AIRecommendClipItem {
  clip_type: string;
  order: number;
  text_content: string;
  duration: number;
  transition_effect: string;
  asset_id: string;
  start_time: number;
  config: Record<string, unknown>;
}

/** AI 推荐响应 */
export interface AIRecommendResponse {
  plan_id: string;
  clips: AIRecommendClipItem[];
  config: Record<string, unknown>;
  total_duration: number;
  confidence: number;
}

/** AI 封面生成请求 */
export interface GenerateCoverRequest {
  asset_ids: string[];
  cover_type?: "ai_frame" | "manual" | "upload" | "ai_regenerate";
  frame_time?: number;
}

/** AI 封面生成响应 */
export interface GenerateCoverResponse {
  plan_id: string;
  cover: Record<string, unknown>;
}

/* ============================================================
 * 前端 UI 类型（EditingPlanner 组件依赖，保留兼容）
 * ============================================================ */

/** 剪辑计划中的片段（UI 层类型） */
export interface EditPlanClip {
  id: string;
  template_segment_id: string;
  /** 素材库中的素材 ID */
  media_asset_id?: string;
  /** 素材类型 */
  material_type: "video" | "image" | "audio" | "voiceover";
  /** 片段文案 */
  script_text: string;
  /** 实际时长（秒） */
  duration: number;
  /** 转场效果 */
  transition?: TransitionEffect;
  /** 排序 */
  order: number;
}

/** 转场效果 */
export interface TransitionEffect {
  type: "none" | "fade" | "dissolve" | "wipe" | "zoom" | "slide";
  duration: number; // 转场时长（秒）
}

/** 素材库资产（UI 层类型，映射自后端 AssetResponse） */
export interface MediaAsset {
  id: string;
  name: string;
  type: "video" | "image" | "audio";
  /** 缩略图 URL */
  thumbnail_url?: string;
  /** 时长（秒），仅 video/audio */
  duration?: number;
  /** 文件大小（字节） */
  size?: number;
  /** 标签 */
  tags: string[];
  created_at: string;
  /** 质量分 0-100 */
  quality_score?: number;
  /** 分类状态 */
  classification_status?: "pending" | "processing" | "completed" | "failed";
}

/* ============================================================
 * API 函数 — 严格对接后端
 * ============================================================ */

/** 获取剪辑计划列表 */
export async function getEditPlans(params?: {
  page?: number;
  page_size?: number;
  template_id?: string;
  status?: string;
}): Promise<EditPlan[]> {
  const response = await apiClient.get("/edit-plans", { params });
  return response.data.items || [];
}

/** 获取单个剪辑计划 */
export async function getEditPlan(planId: string): Promise<EditPlan> {
  const response = await apiClient.get(`/edit-plans/${planId}`);
  return response.data;
}

/** 创建剪辑计划 */
export async function createEditPlan(
  data: CreateEditPlanRequest,
): Promise<EditPlan> {
  const response = await apiClient.post("/edit-plans", data);
  return response.data;
}

/** 更新剪辑计划 */
export async function updateEditPlan(
  planId: string,
  data: UpdateEditPlanRequest,
): Promise<EditPlan> {
  const response = await apiClient.put(`/edit-plans/${planId}`, data);
  return response.data;
}

/** 删除剪辑计划 */
export async function deleteEditPlan(planId: string): Promise<void> {
  await apiClient.delete(`/edit-plans/${planId}`);
}

/** 触发剪辑计划生成 */
export async function generateEditPlan(
  planId: string,
): Promise<GenerateResponse> {
  const response = await apiClient.post(`/edit-plans/${planId}/generate`);
  return response.data;
}

/** 获取剪辑计划生成状态（轮询用） */
export async function getGenerationStatus(
  planId: string,
): Promise<GenerationStatusResponse> {
  const response = await apiClient.get(
    `/edit-plans/${planId}/generation-status`,
  );
  return response.data;
}

/** AI 推荐片段方案 */
export async function aiRecommendClips(
  planId: string,
  data: AIRecommendRequest,
): Promise<AIRecommendResponse> {
  const response = await apiClient.post(
    `/edit-plans/${planId}/ai-recommend`,
    data,
  );
  return response.data;
}

/** AI 生成封面 */
export async function generateCover(
  planId: string,
  data: GenerateCoverRequest,
): Promise<GenerateCoverResponse> {
  const response = await apiClient.post(
    `/edit-plans/${planId}/generate-cover`,
    data,
  );
  return response.data;
}

/** 获取剪辑计划关联的生成记录 */
export async function getEditPlanGenerations(
  planId: string,
): Promise<EditPlanGeneration[]> {
  const response = await apiClient.get(`/edit-plans/${planId}/generations`);
  return response.data.items || [];
}

/**
 * 获取素材库列表 — 调用 GET /api/v1/assets?library_id=xxx
 * 将后端 AssetResponse 映射为前端 MediaAsset 类型
 */
export async function getMediaAssets(
  libraryId?: string,
): Promise<MediaAsset[]> {
  const response = await apiClient.get("/assets", {
    params: libraryId ? { library_id: libraryId } : undefined,
  });
  const items: AssetItem[] = response.data.items || [];
  return items.map(mapAssetToMediaAsset);
}

/** 获取单个素材 */
export async function getMediaAsset(id: string): Promise<MediaAsset> {
  const response = await apiClient.get(`/assets/${id}`);
  return mapAssetToMediaAsset(response.data);
}

/* ============================================================
 * 映射函数：AssetResponse → MediaAsset
 * ============================================================ */

function inferMediaType(mimeType: string): "video" | "image" | "audio" {
  if (mimeType.startsWith("video/")) return "video";
  if (mimeType.startsWith("image/")) return "image";
  return "audio";
}

function mapAssetToMediaAsset(asset: AssetItem): MediaAsset {
  const meta = (asset.metadata || {}) as Record<string, unknown>;
  const ext = asset as AssetItem & Record<string, unknown>;
  return {
    id: asset.id,
    name: asset.name,
    type: inferMediaType(asset.mime_type || ""),
    thumbnail_url:
      typeof ext.thumbnail_url === "string" ? ext.thumbnail_url : undefined,
    duration:
      typeof ext.duration === "number"
        ? ext.duration
        : typeof meta.duration === "number"
          ? (meta.duration as number)
          : undefined,
    size: asset.file_size ?? undefined,
    tags: [],
    created_at: asset.created_at ?? "",
    quality_score: asset.quality_score ?? undefined,
    classification_status: (asset.classification_status ??
      undefined) as MediaAsset["classification_status"],
  };
}

/* ============================================================
 * 常量
 * ============================================================ */

/** 转场效果选项 */
export const TRANSITION_OPTIONS: {
  value: TransitionEffect["type"];
  label: string;
}[] = [
  { value: "none", label: "无转场" },
  { value: "fade", label: "淡入淡出" },
  { value: "dissolve", label: "溶解" },
  { value: "wipe", label: "擦除" },
  { value: "zoom", label: "缩放" },
  { value: "slide", label: "滑动" },
];

/** 素材类型标签 */
export const MATERIAL_TYPE_LABELS: Record<string, string> = {
  video: "视频",
  image: "图片",
  audio: "音频",
  voiceover: "配音",
};

/** 素材类型图标 */
export const MATERIAL_TYPE_ICONS: Record<string, string> = {
  video: "🎬",
  image: "🖼️",
  audio: "🎵",
  voiceover: "🎙️",
};

/** 计划状态标签 */
export const PLAN_STATUS_LABELS: Record<EditPlanStatus, string> = {
  draft: "草稿",
  editing: "编辑中",
  rendering: "渲染中",
  completed: "已完成",
  failed: "失败",
};

/** 质量分筛选选项 */
export const QUALITY_OPTIONS: {
  value: string;
  label: string;
  min?: number;
  max?: number;
}[] = [
  { value: "all", label: "全部质量" },
  { value: "high", label: "高质量 (80-100)", min: 80, max: 100 },
  { value: "medium", label: "中质量 (50-79)", min: 50, max: 79 },
  { value: "low", label: "低质量 (0-49)", min: 0, max: 49 },
];