/*
 * Copyright 2013 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.api.client.googleapis.testing.json;

import com.google.api.client.googleapis.json.GoogleJsonResponseException;
import com.google.api.client.http.HttpRequest;
import com.google.api.client.http.HttpResponse;
import com.google.api.client.json.Json;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.testing.http.HttpTesting;
import com.google.api.client.testing.http.MockHttpTransport;
import com.google.api.client.testing.http.MockLowLevelHttpResponse;
import com.google.api.client.util.Beta;
import java.io.IOException;

/**
 * {@link Beta} <br>
 * Factory class that builds {@link GoogleJsonResponseException} instances for testing.
 *
 * @since 1.18
 */
@Beta
public final class GoogleJsonResponseExceptionFactoryTesting {

  /**
   * Convenience factory method that builds a {@link GoogleJsonResponseException} from its
   * arguments. The method builds a dummy {@link HttpRequest} and {@link HttpResponse}, sets the
   * response's status to a user-specified HTTP error code, suppresses exceptions, and executes the
   * request. This forces the underlying framework to create, but not throw, a {@link
   * GoogleJsonResponseException}, which the method retrieves and returns to the invoker.
   *
   * @param jsonFactory the JSON factory that will create all JSON required by the underlying
   *     framework
   * @param httpCode the desired HTTP error code. Note: do nut specify any codes that indicate
   *     successful completion, e.g. 2XX.
   * @param reasonPhrase the HTTP reason code that explains the error. For example, if {@code
   *     httpCode} is {@code 404}, the reason phrase should be {@code NOT FOUND}.
   * @return the generated {@link GoogleJsonResponseException}, as specified.
   * @throws IOException if request transport fails.
   */
  public static GoogleJsonResponseException newMock(
      JsonFactory jsonFactory, int httpCode, String reasonPhrase) throws IOException {
    MockLowLevelHttpResponse otherServiceUnavaiableLowLevelResponse =
        new MockLowLevelHttpResponse()
            .setStatusCode(httpCode)
            .setReasonPhrase(reasonPhrase)
            .setContentType(Json.MEDIA_TYPE)
            .setContent(
                "{ \"error\": { \"errors\": [ { \"reason\": \""
                    + reasonPhrase
                    + "\" } ], "
                    + "\"code\": "
                    + httpCode
                    + " } }");
    MockHttpTransport otherTransport =
        new MockHttpTransport.Builder()
            .setLowLevelHttpResponse(otherServiceUnavaiableLowLevelResponse)
            .build();
    HttpRequest otherRequest =
        otherTransport.createRequestFactory().buildGetRequest(HttpTesting.SIMPLE_GENERIC_URL);
    otherRequest.setThrowExceptionOnExecuteError(false);
    HttpResponse otherServiceUnavailableResponse = otherRequest.execute();
    return GoogleJsonResponseException.from(jsonFactory, otherServiceUnavailableResponse);
  }
}
