export type CNBCoreOptions<T = {}> = {
  token: string;
  /**
   * 对 cnb 界面操作定制模块功能时需要传入 cookie
   */
  cookie?: string;
  cnb?: CNBCore;
} & T;

export type RequestOptions = {
  url?: string;
  method?: string;
  data?: Record<string, any>;
  body?: any;
  params?: Record<string, any>;
  headers?: Record<string, any>;
  useCookie?: boolean;
  useOrigin?: boolean;
};
export class CNBCore {
  baseURL = 'https://api.cnb.cool';
  public token: string;
  public cookie?: string;
  constructor(options: CNBCoreOptions) {
    this.token = options.token;
    this.cookie = options.cookie;
    if (options?.cnb) {
      if (!options.token) {
        this.token = options.cnb.token;
      }
      if (!options.cookie) {
        this.cookie = options.cnb.cookie;
      }
    }
  }

  async request({ url, method = 'GET', data, params, headers, body, useCookie, useOrigin }: RequestOptions): Promise<any> {
    const defaultHeaders: Record<string, string> = {
      'Content-Type': 'application/json',
      // 'Accept': 'application/json, application/vnd.cnb.api+json, application/vnd.cnb.web+json',
      'Accept': 'application/json',
    };
    if (this.token) {
      defaultHeaders['Authorization'] = `Bearer ${this.token}`;
    }
    if (params) {
      const queryString = new URLSearchParams(params).toString();
      url += `?${queryString}`;
      defaultHeaders['Accept'] = 'application/json';
    }
    const _headers = { ...defaultHeaders, ...headers };
    let _body = undefined;
    if (data) {
      _body = JSON.stringify(data);
    }
    if (body) {
      _body = body;
    }
    if (!_headers.Authorization) {
      delete _headers.Authorization;
    }
    if (useCookie) {
      _headers['Cookie'] = this.cookie || "";
      delete _headers.Authorization;
    }
    // console.log('Request URL:', url, data, _headers);
    const response = await fetch(url || '', {
      method,
      headers: _headers,
      body: _body,
    });
    const res = (data: any, message?: string, code?: number) => {
      if (useOrigin) {
        return data;
      }
      return {
        code: code ?? 200,
        message: message || 'success',
        data,
      };
    }
    if (!response.ok) {
      const errorText = await response.text();
      if (useOrigin)
        throw new Error(`Request failed with status ${response.status}: ${errorText}`);
      return res(null, `Request failed with status ${response.status}: ${errorText}`, response.status);
    }

    const contentType = response.headers.get('Content-Type');
    if (contentType && contentType.includes('application/json')) {
      const values = await response.json();
      return res(values);
    } else {
      const text = await response.text();
      return res(text);
    }
  }
  makeUrl(url?: string): string {
    if (url && url.startsWith('http')) {
      return url;
    }
    return new URL(url || '', this.baseURL).toString();
  }
  get<T = any>({ url, ...REST }: RequestOptions): Promise<T> {
    const fullUrl = this.makeUrl(url);
    return this.request({ url: fullUrl, method: 'GET', ...REST });
  }
  post<T = any>({ url, ...REST }: RequestOptions): Promise<T> {
    const fullUrl = this.makeUrl(url);
    return this.request({ url: fullUrl, method: 'POST', ...REST });
  }
  put<T = any>({ url, ...REST }: RequestOptions): Promise<T> {
    const fullUrl = this.makeUrl(url);
    return this.request({ url: fullUrl, method: 'PUT', ...REST });
  }
  delete<T = any>({ url, ...REST }: RequestOptions): Promise<T> {
    const fullUrl = this.makeUrl(url);
    return this.request({ url: fullUrl, method: 'DELETE', ...REST });
  }
  patch<T = any>({ url, ...REST }: RequestOptions): Promise<T> {
    const fullUrl = this.makeUrl(url);
    return this.request({ url: fullUrl, method: 'PATCH', ...REST });
  }
  /**
 * 通过 PUT 请求上传文件内容
 * @param data 包含 URL、token 和文件内容
 * @returns 上传结果
 */
  async putFile(data: { url: string, token: string, content: string | Buffer }): Promise<any> {
    return this.request({
      url: data.url,
      method: 'PUT',
      body: data.content,
      headers: {
        'Authorization': `Bearer ${data.token}`,
        'Content-Type': 'application/octet-stream'
      }
    });
  }
}

export type Result<T = any> = {
  code: number;
  message: string;
  data: T
};