interface DnsUpdate {
  zone_id: string;
  record_id: string;
  domain: string;
  new_ip: string;
  api_token: string;
  type?: string; // 'A' or 'AAAA'
}
export class CloudflareDDNS {
  makeHeader(api_token: string) {
    return {
      'Authorization': `Bearer ${api_token}`,
      'Content-Type': 'application/json',
    };
  }
  async updateRecord(data: DnsUpdate) {
    const { zone_id, record_id, domain, type, new_ip, api_token } = data;
    const url = `https://api.cloudflare.com/client/v4/zones/${zone_id}/dns_records/${record_id}`;
    const body = {
      "type": type || 'A',
      "name": domain,
      "content": new_ip,
      "ttl": 0,
      "proxied": false,
    }
    const response = await fetch(url, {
      method: 'PUT',
      headers: this.makeHeader(api_token),
      body: JSON.stringify(body),
    });
    const result = await response.json();
    if (!result.success) {
      throw new Error(`更新失败: ${JSON.stringify(result.errors)}`);
    }
    return result;
  }
  async getList(zone_id: string, api_token: string, opts?: { per_page?: number; page?: number, search?: string }) {
    const per_page = opts?.per_page || 100;
    const page = opts?.page || 1;
    const search = opts?.search ? `&search=${encodeURIComponent(opts.search)}` : '';
    const url = `https://api.cloudflare.com/client/v4/zones/${zone_id}/dns_records?per_page=${per_page}&page=${page}${search}`;
    return fetch(url, {
      method: 'GET',
      headers: this.makeHeader(api_token),
    }).then(res => res.json());
  }
  async getRecord(zone_id: string, record_id: string, api_token: string) {
    const url = `https://api.cloudflare.com/client/v4/zones/${zone_id}/dns_records/${record_id}`;
    return fetch(url, {
      method: 'GET',
      headers: this.makeHeader(api_token),
    }).then(res => res.json());
  }
  async createRecord(data: Partial<DnsUpdate>) {
    const { zone_id, domain, type = 'A', new_ip: content, api_token } = data;
    const url = `https://api.cloudflare.com/client/v4/zones/${zone_id}/dns_records`;
    const body = {
      "type": type,
      "name": domain,
      "content": content,
      "ttl": 0,
      "proxied": false,
    }
    const response = await fetch(url, {
      method: 'POST',
      headers: this.makeHeader(api_token),
      body: JSON.stringify(body),
    });
    const result = await response.json();
    if (!result.success) {
      throw new Error(`创建失败: ${JSON.stringify(result.errors)}`);
    }    
    return result;
  }
  async deleteRecord(zone_id: string, record_id: string, api_token: string) {
    const url = `https://api.cloudflare.com/client/v4/zones/${zone_id}/dns_records/${record_id}`;
    const response = await fetch(url, {
      method: 'DELETE',
      headers: this.makeHeader(api_token),
    });
    const result = await response.json();
    if (!result.success) {
      throw new Error(`删除失败: ${JSON.stringify(result.errors)}`);
    }
    console.log(`删除成功: Record ID ${record_id}`);
    return result;
  }
}