/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.beam.sdk.extensions.gcp.util;

import static junit.framework.TestCase.assertEquals;
import static junit.framework.TestCase.assertNull;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

import com.google.api.client.http.GenericUrl;
import com.google.api.client.json.Json;
import com.google.api.client.testing.http.MockLowLevelHttpResponse;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
import org.mockito.MockitoAnnotations;

/** Tests for CustomHttpErrorsTest. */
@RunWith(JUnit4.class)
public class CustomHttpErrorsTest {

  private static final String BQ_TABLES_LIST_URL =
      ("http://www.googleapis.com/bigquery/v2/projects/"
          + "myproject/datasets/mydataset/tables?maxResults=1000");

  @Before
  public void initMocks() {
    MockitoAnnotations.initMocks(this);
  }

  private static MockLowLevelHttpResponse createResponse(int code, String body) {
    MockLowLevelHttpResponse response = new MockLowLevelHttpResponse();
    response.addHeader("custom_header", "value");
    response.setStatusCode(code);
    response.setContentType(Json.MEDIA_TYPE);
    response.setContent(body);
    return response;
  }

  private HttpRequestWrapper createHttpRequest(String url) throws MalformedURLException {
    HttpRequestWrapper request = mock(HttpRequestWrapper.class);
    GenericUrl genericUrl = new GenericUrl(new URL(url));
    when(request.getUrl()).thenReturn(genericUrl);
    return request;
  }

  private HttpResponseWrapper createHttpResponse(int statusCode) {
    HttpResponseWrapper response = mock(HttpResponseWrapper.class);
    when(response.getStatusCode()).thenReturn(statusCode);
    return response;
  }

  @Test
  public void testMatchesCode() throws IOException {
    HttpRequestWrapper request = createHttpRequest(BQ_TABLES_LIST_URL);
    HttpResponseWrapper response = createHttpResponse(403);
    HttpCallCustomError mockCustomError = mock(HttpCallCustomError.class);

    CustomHttpErrors.Builder builder = new CustomHttpErrors.Builder();
    builder.addErrorForCode(403, "Custom Error Msg");
    CustomHttpErrors customErrors = builder.build();

    String errorMessage = customErrors.getCustomError(request, response);
    assertEquals("Custom Error Msg", errorMessage);
  }

  @Test
  public void testNotMatchesCode() throws IOException {
    HttpRequestWrapper request = createHttpRequest(BQ_TABLES_LIST_URL);
    HttpResponseWrapper response = createHttpResponse(404);
    HttpCallCustomError mockCustomError = mock(HttpCallCustomError.class);

    CustomHttpErrors.Builder builder = new CustomHttpErrors.Builder();
    builder.addErrorForCode(403, "Custom Error Msg");

    CustomHttpErrors customErrors = builder.build();

    String errorMessage = customErrors.getCustomError(request, response);
    assertNull(errorMessage);
  }

  @Test
  public void testMatchesCodeAndUrlContains() throws IOException {
    HttpRequestWrapper request = createHttpRequest(BQ_TABLES_LIST_URL);
    HttpResponseWrapper response = createHttpResponse(403);
    HttpCallCustomError mockCustomError = mock(HttpCallCustomError.class);

    CustomHttpErrors.Builder builder = new CustomHttpErrors.Builder();
    builder.addErrorForCodeAndUrlContains(403, "/tables?", "Custom Error Msg");
    CustomHttpErrors customErrors = builder.build();

    String errorMessage = customErrors.getCustomError(request, response);
    assertEquals("Custom Error Msg", errorMessage);
  }

  @Test
  public void testNotMatchesCodeAndUrlContains() throws IOException {
    HttpRequestWrapper request = createHttpRequest(BQ_TABLES_LIST_URL);
    HttpResponseWrapper response = createHttpResponse(404);
    HttpCallCustomError mockCustomError = mock(HttpCallCustomError.class);

    CustomHttpErrors.Builder builder = new CustomHttpErrors.Builder();
    builder.addErrorForCodeAndUrlContains(403, "/doesnotmatch?", "Custom Error Msg");
    CustomHttpErrors customErrors = builder.build();

    String errorMessage = customErrors.getCustomError(request, response);
    assertNull(errorMessage);
  }
}