import { message } from 'ant-design-vue';

import { requestClient } from '#/api/request';

export interface DownloadCenterListParam {
  page?: number;
  pageSize?: number;
  keyword?: string;
  bizKey?: string;
  /** 多个状态用逗号分隔：0排队 2生成中 1已完成 3失败 */
  status?: string;
  createdAt?: string[];
}

export interface DownloadCenterItem {
  id: number;
  taskNo: string;
  bizKey: string;
  bizName: string;
  status: number;
  totalCount: number;
  fileName: string;
  fileSize: number;
  errorMessage?: string;
  createdAt?: string;
  finishTime?: string;
  expireTime?: string;
  deletedTime?: null | string;
  deleteReason?: '' | 'expired' | 'user';
}

export interface DownloadCenterListResult {
  items: DownloadCenterItem[];
  page: number;
  pageSize: number;
  total: number;
}

export interface DownloadCenterRecentResult {
  items: DownloadCenterItem[];
  runningCount: number;
  finishedCount: number;
}

/** 下载中心列表 */
export function List(params: DownloadCenterListParam) {
  return requestClient.get<DownloadCenterListResult>(
    '/common/downloadCenter/list',
    {
      params,
    },
  );
}

/** 右上角入口：最近任务与进行中数量。
 * 这是辅助信息，无权限或后端未就绪时静默失败，不能弹全局错误打扰用户。 */
export function Recent(limit = 5) {
  return requestClient.get<DownloadCenterRecentResult>(
    '/common/downloadCenter/recent',
    { params: { limit }, errorMessageMode: 'none' },
  );
}

/** 下载导出文件：业务错误可能以 HTTP 200 JSON Blob 返回，不能当作 xlsx 保存。 */
export async function Download(taskId: number): Promise<Blob> {
  const response = await requestClient.download<
    import('axios').AxiosResponse<Blob>
  >(`/common/downloadCenter/download?taskId=${taskId}`, {
    timeout: 120 * 1000,
    responseReturn: 'raw',
  });
  const blob = response.data;
  const contentType = String(
    response.headers['content-type'] || blob?.type || '',
  ).toLowerCase();
  if (contentType.includes('json')) {
    let errorMessage = '下载失败，请稍后重试';
    try {
      const payload = JSON.parse(await blob.text());
      errorMessage = payload?.message || errorMessage;
    } catch {
      // Malformed JSON must not be saved as a spreadsheet either.
    }
    message.error(errorMessage);
    throw new Error(errorMessage);
  }
  if (!(blob instanceof Blob) || blob.size === 0) {
    const errorMessage = '下载文件为空，请稍后重试';
    message.error(errorMessage);
    throw new Error(errorMessage);
  }
  return blob;
}

/** 删除导出任务 */
export function Remove(taskId: number) {
  return requestClient.post('/common/downloadCenter/remove', { taskId });
}