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/*
 * Copyright 2018 Google Inc.
 *
 * 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.google.firebase.internal;

import com.google.api.client.http.HttpRequest;
import com.google.api.client.http.HttpRequestInitializer;
import com.google.auth.http.HttpCredentialsAdapter;
import com.google.auth.oauth2.GoogleCredentials;
import com.google.firebase.FirebaseApp;
import com.google.firebase.ImplFirebaseTrampolines;
import java.io.IOException;

/**
 * {@code HttpRequestInitializer} for configuring outgoing REST calls. Handles OAuth2 authorization
 * and setting timeout values.
 */
public class FirebaseRequestInitializer implements HttpRequestInitializer {

  private final HttpCredentialsAdapter credentialsAdapter;
  private final int connectTimeout;
  private final int readTimeout;

  public FirebaseRequestInitializer(FirebaseApp app) {
    GoogleCredentials credentials = ImplFirebaseTrampolines.getCredentials(app);
    this.credentialsAdapter = new HttpCredentialsAdapter(credentials);
    this.connectTimeout = app.getOptions().getConnectTimeout();
    this.readTimeout = app.getOptions().getReadTimeout();
  }

  @Override
  public void initialize(HttpRequest httpRequest) throws IOException {
    credentialsAdapter.initialize(httpRequest);
    httpRequest.setConnectTimeout(connectTimeout);
    httpRequest.setReadTimeout(readTimeout);
  }
}