// @ts-nocheck
// 阿里云盘驱动 — 分享链接验证
// 依赖 aliyun-api.ts 统一端点模块 — URL 不再硬编码
import { ALIYUN_API_HOST, ALIYUN_WEB_HOST, EP as AE, getShareHeaders } from './aliyun-api';

export interface AliyunConfig {
  cookie?: string;
  nickname?: string;
}

export class AliyunDriver {
  private config: AliyunConfig;

  constructor(config: AliyunConfig = {}) {
    this.config = config;
  }

  /**
   * Extract share_id from an Aliyun share URL.
   * Supports:
   *   https://www.aliyundrive.com/s/XXXYYY
   *   https://www.alipan.com/s/XXXYYY
   *   https://api.aliyundrive.com/v2/share_link/XXXYYY
   */
  private extractShareId(shareUrl: string): string | null {
    try {
      const url = new URL(shareUrl);
      const pathMatch = url.pathname.match(/\/s\/([a-zA-Z0-9]+)/);
      if (pathMatch) return pathMatch[1];

      const shareMatch = url.pathname.match(/\/share_link\/([a-zA-Z0-9]+)/);
      if (shareMatch) return shareMatch[1];

      return null;
    } catch {
      return null;
    }
  }

  /**
   * Validate a share link using Aliyun's public anonymous API.
   * No cookie or token required — this endpoint is open.
   */
  async validateShareLink(shareUrl: string): Promise<{
    valid: boolean;
    message: string;
    fileCount?: number;
    shareName?: string;
  }> {
    const shareId = this.extractShareId(shareUrl);
    if (!shareId) {
      return { valid: false, message: '无法解析阿里云盘链接格式' };
    }

    try {
      const response = await fetch(
        ALIYUN_API_HOST + AE.SHARE_GET_BY_ANONYMOUS,
        {
          method: 'POST',
          headers: getShareHeaders(),
          body: JSON.stringify({
            share_id: shareId,
            share_pwd: '',
          }),
          signal: AbortSignal.timeout(10000),
        }
      );

      if (!response.ok) {
        return { valid: false, message: 'HTTP ' + response.status + ': API 请求失败' };
      }

      const data = await response.json();

      if (data.code) {
        const errorMessages: Record<string, string> = {
          'ShareLinkExpired': '分享链接已过期',
          'ShareLinkCancelled': '分享链接已取消',
          'ShareLinkNotFound': '分享链接不存在',
          'ForbiddenFileInTheDrive': '文件已被禁止访问',
          'UserNotAuthenticated': '需要登录才能访问',
          'InvalidResource.NotFound': '资源不存在',
        };
        return {
          valid: false,
          message: errorMessages[data.code] || data.message || 'API 返回错误: ' + data.code,
        };
      }

      // 成功：提取分享信息
      const fileCount = data.file_infos?.length || 0;
      const shareName = data.share_name || data.display_name || '';

      return {
        valid: true,
        message: '链接有效',
        fileCount,
        shareName,
      };
    } catch (err) {
      return { valid: false, message: '网络错误: ' + (err instanceof Error ? err.message : String(err)) };
    }
  }

  async getNickname(): Promise<string | null> {
    return this.config.nickname || null;
  }
}