/**
 * 模板草稿 API — 对接后端 Template Editor Schema
 * 字段名严格匹配后端 API 响应
 */
import apiClient from "./client"
import type { AssetItem } from "./assets"
import type {
  WatermarkConfig,
  IntroOutroConfig,
  PipConfig,
  FilterConfig,
  ChromaKeyConfig,
  StickerConfig,
  CoverConfig,
} from "@/pages/editing-planner/types"

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

/** 模板草稿状态枚举 */
export type EditPlanStatus =
  "draft" | "editing" | "rendering" | "completed" | "failed" | "cancelled"

/** 标题配置（对齐后端 title_config） */
export interface TitleConfig {
  ai_auto_select: boolean
  content: string
  font_preset: string
  font_color: string
  font_size: number
  position: string
}

/** 字幕配置 */
export interface SubtitleConfig {
  enabled: boolean
  position: string
  font: string
  color: string
  size: number
  animation: string
}

/** BGM 配置 */
export interface BgmConfig {
  enabled: boolean
  music_id: string
}

/** 片段 TTS 配置 */
export interface SegmentTtsConfig {
  mode: string
  text: string
  voice_id: string
  speed: number
  pitch: number
  volume: number
  subtitle_sync: boolean
}

/** 片段裁剪配置 */
export interface SegmentTrimConfig {
  start_time: number
  end_time: number
}

/** 片段转场配置 */
export interface SegmentTransitionConfig {
  type: string
  duration: number
}

/** 模板草稿中的单个片段（config 内部 segments 项） */
export interface EditPlanSegment {
  segment_order: number
  duration_min: number
  duration_max: number
  material_type: string
  transition?: SegmentTransitionConfig
  playback_speed?: number
  tts_config?: SegmentTtsConfig
  trim_config?: SegmentTrimConfig
}

/** 模板草稿 config 完整类型（对齐后端 config JSON 结构） */
export interface EditPlanConfig {
  title_config?: TitleConfig
  subtitle_config?: SubtitleConfig
  bgm_config?: BgmConfig
  estimated_duration?: number
  segments?: EditPlanSegment[]
  watermark_config?: WatermarkConfig
  intro_outro_config?: IntroOutroConfig
  pip_config?: PipConfig
  filter_config?: FilterConfig
  green_screen_config?: ChromaKeyConfig
  sticker_config?: StickerConfig
  cover_config?: CoverConfig
  /** 前端扩展：关联的素材 ID 列表 */
  asset_ids?: string[]
  /** 配音 ID */
  voice_id?: string
  /** 克隆音色档案 ID */
  voice_clone_profile_id?: string
  /** 自定义配音音频 URL */
  custom_audio_url?: string
  /** 自定义配音文本 */
  custom_text?: string
  /** 视频比例 */
  ratio?: string
  /** 视频风格 */
  style?: string
  /** 目标时长（秒） */
  duration?: number
  /** 是否自动生成字幕 */
  auto_subtitles?: boolean
  /** 是否启用 BGM */
  bgm?: boolean
  /** 生成数量 */
  generate_count?: number
  /** 素材模式 */
  material_mode?: string
}

/** 模板草稿（后端响应） */
export interface EditPlan {
  id: string
  template_id: string
  name: string
  status: EditPlanStatus
  total_duration: number
  /** 生成视频数量（后端 EditPlanResponse.result_count） */
  result_count: number
  config: EditPlanConfig
  created_at: string
  updated_at: string
}

/** 创建模板草稿请求（后端要求 template_id + name 必填） */
export interface CreateEditPlanRequest {
  template_id: string
  name: string
  config?: EditPlanConfig
  total_duration?: number
  /** 来源模板草稿 ID（从模板编辑器跳转到智能剪辑时关联） */
  source_edit_plan_id?: string
}

/** 更新模板草稿请求 */
export interface UpdateEditPlanRequest {
  name?: string
  config?: EditPlanConfig
  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
}

/** 模板草稿关联的生成记录（实际是 GenerationTask 对象） */
export interface EditPlanGeneration {
  id: string // 即 generation_task_id
  source_edit_plan_id: string
  template_id: string
  asset_ids: string[]
  status: EditPlanStatus
  progress: number
  result_count: number
  error_message: string
  error_info: Record<string, unknown>
  logs: Array<Record<string, unknown>>
  retry_count: number
  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
  error_message?: string
}

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

/** 生成视频详情（对应后端 GeneratedVideoResponse） */
export interface GeneratedVideo {
  id: string
  project_id?: string
  generation_task_id?: string
  name: string
  file_url: string
  file_size?: number
  duration?: number
  thumbnail_url?: string
  width?: number
  height?: number
  fps?: number
  status: string
  review_status?: string
  download_url?: string
  created_at?: string
  updated_at?: string
}

/* ============================================================
 * 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: EditPlanConfig
}

/** AI 推荐响应 */
export interface AIRecommendResponse {
  plan_id: string
  clips: AIRecommendClipItem[]
  config: EditPlanConfig
  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: CoverResult
}

/** 封面生成结果 */
export interface CoverResult {
  scheme?: string
  asset_id?: string
  frame_time?: number
  thumbnail_url?: string
}

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

/** 转场效果（14 种预设） */
export interface TransitionEffect {
  type:
    | "none"
    | "cut"
    | "fade"
    | "dissolve"
    | "zoom"
    | "slide_left"
    | "slide_right"
    | "slide_up"
    | "slide_down"
    | "wipe_left"
    | "wipe_right"
    | "wipe_up"
    | "wipe_down"
    | "circlecrop"
    | "rectcrop"
  duration: number // 转场时长（秒）
  /** 播放速度倍率 */
  playback_speed?: number
}

/** 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
 * ============================================================ */

/** 模板草稿列表查询参数 */
export interface EditPlanListParams {
  page?: number
  page_size?: number
  template_id?: string
  status?: string
}

/** 模板草稿列表分页响应 */
export interface EditPlanListResponse {
  items: EditPlan[]
  total: number
  page: number
  page_size: number
}

/** 获取模板草稿列表（支持分页和筛选） */
export async function getEditPlans(params?: EditPlanListParams): Promise<EditPlanListResponse> {
  const response = await apiClient.get<EditPlanListResponse>("/templates/drafts", {
    params,
  })
  return response.data
}

/** 获取单个模板草稿 */
export async function getEditPlan(templateId: string): Promise<EditPlan> {
  const response = await apiClient.get(`/templates/${templateId}/editor`)
  return response.data
}

/** 创建模板草稿 */
export async function createEditPlan(data: CreateEditPlanRequest): Promise<EditPlan> {
  const response = await apiClient.post("/templates/drafts", data)
  return response.data
}

/** 更新模板草稿 */
export async function updateEditPlan(
  templateId: string,
  data: UpdateEditPlanRequest,
): Promise<EditPlan> {
  const response = await apiClient.put(`/templates/${templateId}/editor`, data)
  return response.data
}

/** 删除模板草稿 */
export async function deleteEditPlan(templateId: string): Promise<void> {
  await apiClient.delete(`/templates/${templateId}/editor`)
}

/** 触发生成 */
export async function generateEditPlan(templateId: string): Promise<GenerateResponse> {
  const response = await apiClient.post(`/templates/${templateId}/editor/generate`)
  return response.data
}

/** 获取生成状态（轮询用） */
export async function getGenerationStatus(templateId: string): Promise<GenerationStatusResponse> {
  const response = await apiClient.get(`/templates/${templateId}/editor/generation-status`)
  return response.data
}

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

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

/** 获取模板草稿关联的生成记录 */
export async function getEditPlanGenerations(templateId: string): Promise<EditPlanGeneration[]> {
  const response = await apiClient.get(`/templates/${templateId}/editor/generations`)
  return response.data.items || []
}

/** 获取生成任务的视频结果列表 */
export async function getGenerationTaskResults(taskId: string): Promise<GeneratedVideo[]> {
  const response = await apiClient.get(`/generation/tasks/${taskId}/results`)
  return response.data.items || response.data || []
}

/** 取消生成任务 */
export async function cancelGeneration(templateId: string): Promise<void> {
  await apiClient.post(`/templates/${templateId}/editor/cancel`)
}

/* ============================================================
 * 片段 CRUD（后端 EditPlanClip 独立表）
 * ============================================================ */

/** 片段状态 */
export type EditPlanClipStatus = "pending" | "processing" | "ready" | "failed"

/** 剪辑片段（后端响应） */
export interface EditPlanClip {
  id: string
  plan_id: string
  clip_type: string // main / intro / outro / overlay / background / b_roll 等
  order: number
  asset_id: string
  text_content: string
  start_time: number
  duration: number
  transition_effect: string
  transition_duration: number
  playback_speed: number
  status: EditPlanClipStatus
  config: Record<string, unknown>
  created_at?: string
  updated_at?: string
}

/** 创建片段请求 */
export interface CreateEditPlanClipRequest {
  clip_type: string
  order: number
  asset_id?: string
  text_content?: string
  start_time?: number
  duration?: number
  transition_effect?: string
  transition_duration?: number
  playback_speed?: number
  config?: Record<string, unknown>
}

/** 更新片段请求 */
export interface UpdateEditPlanClipRequest {
  clip_type?: string
  order?: number
  asset_id?: string
  text_content?: string
  start_time?: number
  duration?: number
  transition_effect?: string
  transition_duration?: number
  playback_speed?: number
  config?: Record<string, unknown>
}

/** 片段列表响应 */
export interface EditPlanClipListResponse {
  items: EditPlanClip[]
  total: number
}

/** 片段列表查询参数 */
export interface EditPlanClipListParams {
  status?: string
  skip?: number
  limit?: number
}

/** 获取片段列表 */
export async function getEditPlanClips(
  templateId: string,
  params?: EditPlanClipListParams,
): Promise<EditPlanClipListResponse> {
  const response = await apiClient.get<EditPlanClipListResponse>(
    `/templates/${templateId}/editor/clips`,
    {
      params,
    },
  )
  return response.data
}

/** 获取单个片段详情 */
export async function getEditPlanClip(templateId: string, clipId: string): Promise<EditPlanClip> {
  const response = await apiClient.get<EditPlanClip>(
    `/templates/${templateId}/editor/clips/${clipId}`,
  )
  return response.data
}

/** 创建片段 */
export async function createEditPlanClip(
  templateId: string,
  data: CreateEditPlanClipRequest,
): Promise<EditPlanClip> {
  const response = await apiClient.post<EditPlanClip>(`/templates/${templateId}/editor/clips`, data)
  return response.data
}

/** 更新片段 */
export async function updateEditPlanClip(
  templateId: string,
  clipId: string,
  data: UpdateEditPlanClipRequest,
): Promise<EditPlanClip> {
  const response = await apiClient.put<EditPlanClip>(
    `/templates/${templateId}/editor/clips/${clipId}`,
    data,
  )
  return response.data
}

/** 删除片段 */
export async function deleteEditPlanClip(templateId: string, clipId: string): Promise<void> {
  await apiClient.delete(`/templates/${templateId}/editor/clips/${clipId}`)
}

/* ============================================================
 * 片段批量操作
 * ============================================================ */

/** 重排序条目 */
export interface ClipReorderItem {
  clip_id: string
  new_order: number
}

/** 重排序响应 */
export interface ClipReorderResponse {
  success: boolean
  updated_count: number
  message: string
}

/** 批量删除响应 */
export interface ClipBatchDeleteResponse {
  success: boolean
  deleted_count: number
  message: string
}

/** 从素材批量创建响应 */
export interface ClipsFromAssetsResponse {
  success: boolean
  created_count: number
  message: string
  clip_ids: string[]
}

/** 片段重排序（拖拽排序后一次性提交） */
export async function reorderEditPlanClips(
  templateId: string,
  items: ClipReorderItem[],
): Promise<ClipReorderResponse> {
  const response = await apiClient.post<ClipReorderResponse>(
    `/templates/${templateId}/editor/clips/reorder`,
    { items },
  )
  return response.data
}

/** 批量删除片段 */
export async function batchDeleteEditPlanClips(
  templateId: string,
  clipIds: string[],
): Promise<ClipBatchDeleteResponse> {
  const response = await apiClient.post<ClipBatchDeleteResponse>(
    `/templates/${templateId}/editor/clips/batch-delete`,
    { clip_ids: clipIds },
  )
  return response.data
}

/** 从素材批量创建片段（追加到时间线末尾） */
export async function createClipsFromAssets(
  templateId: string,
  assetIds: string[],
  clipType = "main",
): Promise<ClipsFromAssetsResponse> {
  const response = await apiClient.post<ClipsFromAssetsResponse>(
    `/templates/${templateId}/editor/clips/from-assets`,
    { asset_ids: assetIds, clip_type: clipType },
  )
  return response.data
}

/* ============================================================
 * 复制计划
 * ============================================================ */

/** 复制计划请求 */
export interface CopyEditPlanRequest {
  name?: string
  project_id?: string
}

/** 复制模板草稿（含所有片段配置） */
export async function copyEditPlan(
  templateId: string,
  data?: CopyEditPlanRequest,
): Promise<EditPlan> {
  const response = await apiClient.post<EditPlan>(
    `/templates/${templateId}/editor/copy`,
    data || {},
  )
  return response.data
}

/**
 * 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 {
  // 优先取顶层 duration，其次从 metadata 回退
  const metaDuration =
    typeof asset.metadata?.duration === "number" ? asset.metadata.duration : undefined
  return {
    id: asset.id,
    name: asset.name,
    type: inferMediaType(asset.mime_type || ""),
    thumbnail_url: asset.thumbnail_url,
    duration: asset.duration ?? metaDuration,
    size: asset.file_size ?? undefined,
    tags: [],
    created_at: asset.created_at ?? "",
    quality_score: asset.quality_score ?? undefined,
    classification_status: asset.classification_status ?? undefined,
  }
}

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

/** 转场效果选项（14 种预设） */
export const TRANSITION_OPTIONS: {
  value: TransitionEffect["type"]
  label: string
  icon: string
}[] = [
  { value: "none", label: "无转场", icon: "⊘" },
  { value: "cut", label: "硬切", icon: "✂" },
  { value: "fade", label: "淡入淡出", icon: "◐" },
  { value: "dissolve", label: "溶解", icon: "◈" },
  { value: "zoom", label: "缩放", icon: "⊕" },
  { value: "slide_left", label: "左滑", icon: "←" },
  { value: "slide_right", label: "右滑", icon: "→" },
  { value: "slide_up", label: "上滑", icon: "↑" },
  { value: "slide_down", label: "下滑", icon: "↓" },
  { value: "wipe_left", label: "左擦除", icon: "▸|" },
  { value: "wipe_right", label: "右擦除", icon: "|◂" },
  { value: "wipe_up", label: "上擦除", icon: "▴̄" },
  { value: "wipe_down", label: "下擦除", icon: "▾̄" },
  { value: "circlecrop", label: "圆形裁切", icon: "●" },
  { value: "rectcrop", label: "矩形裁切", icon: "■" },
]

/** 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",
  cancelled: "已取消",
}

/** 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 },
]