content: /**
   * Copyright (C) 2024 AIDC-AI
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package com.alibaba.langengine.onedrive.client;
  
  import com.alibaba.langengine.onedrive.OneDriveConfiguration;
  import com.microsoft.graph.authentication.IAuthenticationProvider;
  import com.microsoft.graph.httpcore.AuthenticationHandler;
  import okhttp3.Request;
  import org.apache.commons.lang3.StringUtils;
  
  import java.util.concurrent.CompletableFuture;
  
  /**
   * OneDrive 认证提供者
   * 
   * @author AIDC-AI
   */
  public class OneDriveAuthProvider implements IAuthenticationProvider {
      
      private final OneDriveConfiguration configuration;
      
      /**
       * 构造函数
       * 
       * @param configuration OneDrive 配置
       */
      public OneDriveAuthProvider(OneDriveConfiguration configuration) {
          this.configuration = configuration;
      }
      
      @Override
      public CompletableFuture<String> getAuthorizationTokenAsync(String requestUrl) {
          return CompletableFuture.supplyAsync(() -> {
              String accessToken = configuration.getEffectiveAccessToken();
              if (StringUtils.isBlank(accessToken)) {
                  throw new RuntimeException("No valid access token available");
              }
              return "Bearer " + accessToken;
          });
      }
      
      @Override
      public CompletableFuture<Request> authenticateRequestAsync(Request request) {
          return getAuthorizationTokenAsync(request.url().toString())
                  .thenApply(token -> request.newBuilder()
                          .addHeader("Authorization", token)
                          .build());
      }
  }
  