content: package com.alibaba.langengine.tencenttranslate.service;
  
  import com.alibaba.langengine.core.model.fastchat.service.RetrofitInitService;
  import com.alibaba.langengine.tencenttranslate.model.TencentTranslateRequest;
  import com.alibaba.langengine.tencenttranslate.model.TencentTranslateResponse;
  import lombok.Data;
  
  import java.time.Duration;
  import java.util.HashMap;
  import java.util.Map;
  
  /**
   * 腾讯翻译服务
   *
   * @author Makoto
   */
  @Data
  public class TencentTranslateService extends RetrofitInitService<TencentTranslateApi> {
      
      private String secretId;
      private String secretKey;
      private String region;
      private String service;
      private String version;
      private String action;
      
      public TencentTranslateService(String serverUrl, Duration timeout, String secretId, String secretKey, 
                                     String region, String service, String version, String action) {
          super(serverUrl, timeout, false, secretId, null);
          this.secretId = secretId;
          this.secretKey = secretKey;
          this.region = region;
          this.service = service;
          this.version = version;
          this.action = action;
      }
      
      @Override
      public Class<TencentTranslateApi> getServiceApiClass() {
          return TencentTranslateApi.class;
      }
      
      public TencentTranslateResponse translate(TencentTranslateRequest request) {
          Map<String, String> headers = new HashMap<>();
          headers.put("Authorization", generateAuthorization(request));
          headers.put("Content-Type", "application/json");
          headers.put("Host", service + ".tencentcloudapi.com");
          headers.put("X-TC-Action", action);
          headers.put("X-TC-Timestamp", String.valueOf(System.currentTimeMillis() / 1000));
          headers.put("X-TC-Version", version);
          headers.put("X-TC-Region", region);
          
          return execute(getApi().translate(request, headers));
      }
      
      private String generateAuthorization(TencentTranslateRequest request) {
          // 这里需要实现腾讯云的签名算法
          // 为了简化，这里返回一个占位符
          return "TC3-HMAC-SHA256 Credential=" + secretId + "/" + getDate() + "/" + service + "/tc3_request";
      }
      
      private String getDate() {
          return java.time.LocalDate.now().toString().replace("-", "");
      }
  }
  