import type { Song } from "./types"
import { apiClient } from "./client"
import type { PaginatedResponse, PaginationParams } from "./client"
import {
  CardSong,
  CardSongResponse,
  CardSongDetail,
  CardSongDetailResponse,
  SongBatch,
  SongBatchesResponse,
  CreateBatchRequest,
  CreateBatchResponse,
  MarkBatchAsProducedResponse,
  CreateSongRequest,
  UpdateSongRequest,
  UploadSongFileResponse,
  UploadSongFileRequest,
  PublishSongResponse
} from "./song.type"

// 将API返回的歌曲数据转换为应用内使用的格式
export const transformCardSongToSong = (cardSong: CardSong): Song => {
  return {
    id: String(cardSong.id),
    name: cardSong.name,
    composer: cardSong.attributes.composer || "",
    lyricist: cardSong.attributes.lyricist || "",
    duration: cardSong.attributes.duration || "",
    releaseDate: cardSong.published_at ? new Date(cardSong.published_at).toISOString().split('T')[0] : "",
    status: cardSong.status_display,
    image: cardSong.image_url || "/placeholder.svg?height=300&width=300",
    audioUrl: cardSong.attributes.audio_file,
    description: cardSong.description,
    rarity: cardSong.rarity_display,
    cardType: cardSong.card_type_display,
    genre: cardSong.attributes.genre,
    lyrics: cardSong.attributes.lyrics,
    rawData: cardSong // 存储完整的原始数据
  }
}

// 获取歌曲列表
export const getSongs = async (params?: PaginationParams): Promise<PaginatedResponse<Song>> => {
  try {
    const page = params?.page || 1;
    const pageSize = params?.pageSize || 10;
    const searchParam = params?.search ? `&search=${encodeURIComponent(params.search)}` : '';
    
    const response = await apiClient.get(
      `/card/category/song/?page_size=${pageSize}&page=${page}${searchParam}`
    );
    
    const data: CardSongResponse = response.data;
    
    if (!data.success) {
      throw new Error(data.message || '获取歌曲列表失败');
    }
    
    // 保存完整的歌曲数据，包括原始数据
    const songs = data.data.results.map((item: any) => {
      const attributes = item.attributes || {};
      return {
        id: String(item.id),
        name: item.name,
        composer: attributes.composer || '',
        lyricist: attributes.lyricist || '',
        duration: attributes.duration || '',
        releaseDate: item.published_at ? new Date(item.published_at).toISOString().split('T')[0] : '',
        status: item.status_display,
        image: item.image_url || '/placeholder.svg?height=300&width=300',
        audioUrl: attributes.audio_file || '',
        description: item.description,
        rarity: item.rarity_display,
        cardType: item.card_type_display,
        genre: attributes.genre,
        lyrics: attributes.lyrics,
        rawData: item // 存储完整的原始数据
      };
    });
    
    return {
      items: songs,
      total: data.data.count,
      page,
      pageSize,
      totalPages: Math.ceil(data.data.count / pageSize),
    };
  } catch (error) {
    console.error('获取歌曲列表失败:', error);
    throw error;
  }
};

// 获取单个歌曲
export const getSong = async (id: string): Promise<Song> => {
  try {
    const response = await apiClient.get(`/card/templates/${id}/`);
    
    const data: CardSongDetailResponse = response.data;
    
    if (!data.success) {
      throw new Error(data.message || '获取歌曲详情失败');
    }
    
    return transformCardSongDetailToSong(data.data);
  } catch (error) {
    console.error('获取歌曲详情失败:', error);
    throw error;
  }
};

// 将API返回的歌曲详情数据转换为应用内使用的格式
export const transformCardSongDetailToSong = (cardSong: CardSongDetail): Song => {
  return {
    id: String(cardSong.id),
    name: cardSong.name,
    composer: cardSong.attributes.composer || "",
    lyricist: cardSong.attributes.lyricist || "",
    duration: cardSong.attributes.duration || "",
    releaseDate: cardSong.published_at ? new Date(cardSong.published_at).toISOString().split('T')[0] : "",
    status: cardSong.status_display,
    image: cardSong.image_url || "/placeholder.svg?height=300&width=300",
    audioUrl: cardSong.attributes.audio_file,
    description: cardSong.description,
    rarity: cardSong.rarity_display,
    cardType: cardSong.card_type_display,
    genre: cardSong.attributes.genre,
    lyrics: cardSong.attributes.lyrics,
    price: cardSong.price,
    batchesCount: cardSong.batches_count,
    cardsCount: cardSong.active_cards_count,
    createdAt: cardSong.created_at,
    updatedAt: cardSong.updated_at,
    rawData: cardSong // 存储完整的原始数据
  }
}

// 创建歌曲
export const createSong = async (data: CreateSongRequest): Promise<any> => {
  try {
    const response = await apiClient.post('/card/templates/', data);
    
    if (!response.data.success) {
      throw new Error(response.data.message || '创建歌曲卡片模板失败');
    }
    
    return response.data.data;
  } catch (error) {
    console.error('创建歌曲失败:', error);
    throw error;
  }
};

// 更新歌曲
export const updateSong = async (id: string, data: UpdateSongRequest): Promise<any> => {
  // 过滤空值
  const filteredData = Object.entries(data).reduce((acc: any, [key, value]) => {
    if (value !== null && value !== undefined && value !== '') {
      if (key === 'song_attributes' && typeof value === 'object') {
        // 过滤song_attributes中的空值
        const filteredAttrs = Object.entries(value).reduce((attrAcc: any, [attrKey, attrValue]) => {
          if (attrValue !== null && attrValue !== undefined && attrValue !== '') {
            attrAcc[attrKey] = attrValue;
          }
          return attrAcc;
        }, {});
        
        // 只有当属性对象有内容时才添加
        if (Object.keys(filteredAttrs).length > 0) {
          acc[key] = filteredAttrs;
        }
      } else {
        acc[key] = value;
      }
    }
    return acc;
  }, {});

  try {
    const response = await apiClient.put(`/card/templates/${id}/`, filteredData);
    
    if (!response.data.success) {
      throw new Error(response.data.message || '更新歌曲卡片模板失败');
    }
    
    return response.data.data;
  } catch (error) {
    console.error('更新歌曲失败:', error);
    throw error;
  }
};

// 删除歌曲
export const deleteSong = async (id: string): Promise<boolean> => {
  try {
    const response = await apiClient.delete(`/card/templates/${id}/`);
    
    const data = response.data;
    
    if (!data.success) {
      throw new Error(data.message || '删除歌曲失败');
    }
    
    return true;
  } catch (error) {
    console.error('删除歌曲失败:', error);
    throw error;
  }
}

// 发布歌曲
export const publishSong = async (id: string): Promise<Song> => {
  try {
    const response = await apiClient.post(`/card/templates/${id}/publish/`);
    
    const data: PublishSongResponse = response.data;
    
    if (!data.success) {
      throw new Error(data.message || '发布歌曲失败');
    }
    
    // 将返回的模板数据转换为Song类型
    return transformCardSongDetailToSong(data.data.template);
  } catch (error) {
    console.error('发布歌曲失败:', error);
    throw error;
  }
};

// 归档歌曲
export const archiveSong = async (id: string): Promise<Song> => {
  try {
    const response = await apiClient.post(`/card/templates/${id}/archive/`);

    const data = response.data;

    if (!data.success) {
      throw new Error(data.message || '归档歌曲失败');
    }

    return transformCardSongDetailToSong(data.data.template);
  } catch (error) {
    console.error('归档歌曲失败:', error);
    throw error;
  }
};

// 获取歌曲批次数据
export const getSongBatches = async (songId: string): Promise<SongBatch[]> => {
  try {
    const response = await apiClient.get(`/card/batches/?template=${songId}`);
    
    const data: SongBatchesResponse = response.data;
    
    if (!data.success) {
      throw new Error(data.message || '获取歌曲批次数据失败');
    }
    
    return data.data.results;
  } catch (error) {
    console.error('获取歌曲批次数据失败:', error);
    throw error;
  }
};

// 创建歌曲批次
export const createSongBatch = async (data: CreateBatchRequest): Promise<SongBatch> => {
  try {
    const response = await apiClient.post('/card/batches/generate/', data);
    
    const responseData: CreateBatchResponse = response.data;
    
    if (!responseData.success) {
      throw new Error(responseData.message || '创建批次失败');
    }
    
    return responseData.data.batch;
  } catch (error) {
    console.error('创建批次失败:', error);
    throw error;
  }
};

// 将批次标记为已生产
export const markBatchAsProduced = async (batchId: number): Promise<SongBatch> => {
  try {
    const response = await apiClient.post(`/card/batches/${batchId}/mark_produced/`);
    
    const responseData: MarkBatchAsProducedResponse = response.data;
    
    if (!responseData.success) {
      throw new Error(responseData.message || '标记批次为已生产失败');
    }
    
    return responseData.data.batch;
  } catch (error) {
    console.error('标记批次为已生产失败:', error);
    throw error;
  }
};

// 上传歌曲文件
export async function uploadSongFile(
  params: UploadSongFileRequest
): Promise<UploadSongFileResponse> {
  try {
    const { file, isPermanent = true, filename } = params;
    const formData = new FormData();
    formData.append('file', file);
    formData.append('is_permanent', isPermanent ? 'true' : 'false');
    if (filename) formData.append('filename', filename);
    
    const response = await apiClient.post('/common/upload/', formData, {
      headers: {
        // 使用multipart/form-data格式，让axios自动设置正确的Content-Type和边界
        'Content-Type': 'multipart/form-data'
      }
    });
    
    const data = response.data;
    
    if (!data.success) {
      throw new Error(data.message || '上传文件失败');
    }
    
    return data.data;
  } catch (error) {
    console.error('上传文件失败:', error);
    throw error;
  }
}