#鸿蒙通关秘籍#如何在HarmonyOS中将远场通信RCP请求模块化封装以简化网络请求？

import { rcp } from '@kit.RemoteCommunicationKit';
import { BusinessError } from '@kit.BasicServicesKit';

// 定义请求和响应的接口
export interface HttpRequestConfig {
  baseURL?: string;
  url?: string;
  method?: "GET" | "POST" | "PUT" | "DELETE";
  data?: Record<string, any>;
  header?: Record<string, any>;
}

export interface HttpResponse<T = any> {
  statusCode: number;
  data: T;
  header: Record<string, any>;
}

// 抽象类，用于定义HTTP请求的方法
export abstract class HttpRequestAbstract {
  session: rcp.Session;
  config: HttpRequestConfig;

  constructor(conf: HttpRequestConfig) {
    this.config = conf;
    this.session = rcp.createSession({
      baseAddress: conf.baseURL,
      headers: conf.header
    });
  }

  request<T = any>(config: HttpRequestConfig): Promise<HttpResponse<T>> {
    return new Promise((resolve, reject) => {
      const fullUrl = `${this.config.baseURL}${config.url}`;
      const req = new rcp.Request(fullUrl, config.method, config.header, config.data);
      this.session.fetch(req).then((response) => {
          resolve({
            statusCode: response.statusCode,
            data: response.toJSON() as T,
            header: response.headers
          });
        }).catch((err: BusinessError) => {
          reject(err);
        });
    });
  }

  get<T = any>(url: string, config?: HttpRequestConfig): Promise<HttpResponse<T>> {
    return this.request({ ...config, url, method: 'GET' });
  }

  post<T = any>(url: string, data?: Record<string, any>, config?: HttpRequestConfig): Promise<HttpResponse<T>> {
    return this.request({ ...config, url, data, method: 'POST' });
  }
}

// 实例化实现类，用于具体请求的封装
export const httpClient = new HttpRequestAbstract({
  baseURL: "http://example.com/api",
});

httpClient.get('/data').then(response => {
  console.log(response.data);
}).catch(error => {
  console.error("Error:", error);
});
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