/**
 * 音色克隆 API
 * 任务 3.11：替换 Mock 数据，对接后端真实 API（3.05）
 * 任务 3.15：新增 progress 字段用于进度展示
 */
import apiClient from "./client";

/* ── 前端兼容类型 ─────────────────────────────────────── */

/** 克隆音色状态（前端展示用） */
export type VoiceCloneStatus = "ready" | "processing" | "failed";

/** 克隆音色条目（前端展示用） */
export interface VoiceClone {
  id: string;
  name: string;
  description: string;
  duration_seconds: number;
  status: VoiceCloneStatus;
  /** 克隆进度 0-100，仅 processing 状态时有值 */
  progress: number;
  sample_url?: string;
  language: string;
  gender: string;
  error_message: string | null;
  created_at: string;
  updated_at: string;
}

/** 创建克隆请求（前端简化版） */
export interface CreateVoiceCloneRequest {
  name: string;
  audio_url: string;
  description?: string;
}

/* ── 后端 API 类型 ────────────────────────────────────── */

/** 后端克隆档案响应 */
export interface VoiceCloneProfile {
  id: string;
  user_id: string;
  name: string;
  description: string;
  source_audio_url: string;
  voice_id: string | null;
  voice_model: string;
  language: string;
  gender: string;
  status: "pending" | "processing" | "ready" | "failed";
  error_message: string | null;
  retry_count: number;
  max_retries: number;
  metadata_: Record<string, unknown> | null;
  created_at: string;
  updated_at: string;
}

/** 后端克隆列表响应 */
export interface ListVoiceCloneResponse {
  items: VoiceCloneProfile[];
  total: number;
}

/** 后端克隆状态响应 */
export interface VoiceCloneStatusResponse {
  id: string;
  status: "pending" | "processing" | "ready" | "failed";
  error_message: string | null;
  voice_id: string | null;
  retry_count: number;
}

/** 后端创建克隆请求（完整版） */
export interface CreateVoiceCloneRequestFull {
  name: string;
  description?: string;
  source_audio_url: string;
  voice_model?: string;
  language?: string;
  gender?: string;
  max_retries?: number;
  metadata_?: Record<string, unknown>;
}

/* ── 辅助函数 ─────────────────────────────────────────── */

/**
 * 将后端 VoiceCloneProfile 转换为前端 VoiceClone
 * 后端 status "pending" 映射为前端 "processing"
 */
export const toVoiceClone = (profile: VoiceCloneProfile): VoiceClone => ({
  id: profile.id,
  name: profile.name,
  description: profile.description || "",
  duration_seconds: 0,
  status: profile.status === "pending" ? "processing" : profile.status,
  progress: 0,
  sample_url: profile.source_audio_url || undefined,
  language: profile.language || "",
  gender: profile.gender || "",
  error_message: profile.error_message || null,
  created_at: profile.created_at,
  updated_at: profile.updated_at,
});

/** 格式化时长 */
export const formatDuration = (seconds: number): string => {
  const m = Math.floor(seconds / 60);
  const s = seconds % 60;
  return `${m}:${String(s).padStart(2, "0")}`;
};

/* ── 查询参数 ─────────────────────────────────────────── */

export interface VoiceCloneListParams {
  status?: string;
  skip?: number;
  limit?: number;
}

/* ── API 函数 ─────────────────────────────────────────── */

/** 获取克隆音色列表（返回前端兼容数组） */
export const getVoiceClones = async (
  params?: VoiceCloneListParams,
): Promise<VoiceClone[]> => {
  const searchParams = new URLSearchParams();
  if (params?.status) searchParams.set("status", params.status);
  if (params?.skip !== undefined) searchParams.set("skip", String(params.skip));
  if (params?.limit !== undefined)
    searchParams.set("limit", String(params.limit));
  const qs = searchParams.toString();
  const response = await apiClient.get<ListVoiceCloneResponse>(
    `/voice-clones${qs ? `?${qs}` : ""}`,
  );
  return response.data.items.map(toVoiceClone);
};

/** 获取克隆音色列表（返回完整响应含 total） */
export const getVoiceClonesWithTotal = async (
  params?: VoiceCloneListParams,
): Promise<ListVoiceCloneResponse> => {
  const searchParams = new URLSearchParams();
  if (params?.status) searchParams.set("status", params.status);
  if (params?.skip !== undefined) searchParams.set("skip", String(params.skip));
  if (params?.limit !== undefined)
    searchParams.set("limit", String(params.limit));
  const qs = searchParams.toString();
  const response = await apiClient.get<ListVoiceCloneResponse>(
    `/voice-clones${qs ? `?${qs}` : ""}`,
  );
  return response.data;
};

/** 获取单个克隆音色详情 */
export const getVoiceCloneDetail = async (
  id: string,
): Promise<VoiceCloneProfile> => {
  const response = await apiClient.get<VoiceCloneProfile>(
    `/voice-clones/${id}`,
  );
  return response.data;
};

/** 创建克隆音色 */
export const createVoiceClone = async (
  data: CreateVoiceCloneRequest,
): Promise<VoiceCloneProfile> => {
  const payload: CreateVoiceCloneRequestFull = {
    name: data.name,
    description: data.description,
    source_audio_url: data.audio_url,
  };
  const response = await apiClient.post<VoiceCloneProfile>(
    "/voice-clones",
    payload,
  );
  return response.data;
};

/** 删除克隆音色 */
export const deleteVoiceClone = async (id: string): Promise<void> => {
  await apiClient.delete(`/voice-clones/${id}`);
};

/** 更新克隆音色名称（stub — 后端暂无 PATCH 端点） */
export const updateVoiceClone = async (
  id: string,
  data: Partial<Pick<VoiceClone, "name">>,
): Promise<VoiceClone> => {
  // 后端暂未提供更新端点，暂用详情接口模拟
  const response = await apiClient.get<VoiceCloneProfile>(
    `/voice-clones/${id}`,
  );
  return toVoiceClone({
    ...response.data,
    ...data,
    updated_at: new Date().toISOString(),
  });
};

/** 获取克隆状态 */
export const getVoiceCloneStatus = async (
  id: string,
): Promise<VoiceCloneStatusResponse> => {
  const response = await apiClient.get<VoiceCloneStatusResponse>(
    `/voice-clones/${id}/status`,
  );
  return response.data;
};

/** 重试克隆 */
export const retryVoiceClone = async (
  id: string,
): Promise<VoiceCloneProfile> => {
  const response = await apiClient.post<VoiceCloneProfile>(
    `/voice-clones/${id}/retry`,
  );
  return response.data;
};