// Copyright 2017 The Nomulus Authors. All Rights Reserved.
//
// 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 google.registry.rdap;

import static com.google.common.truth.Truth.assertThat;
import static google.registry.testing.TestDataHelper.loadFileWithSubstitutions;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;

import com.google.appengine.api.users.User;
import com.google.common.collect.ImmutableMap;
import google.registry.model.ofy.Ofy;
import google.registry.rdap.RdapMetrics.EndpointType;
import google.registry.rdap.RdapMetrics.SearchType;
import google.registry.rdap.RdapMetrics.WildcardType;
import google.registry.rdap.RdapSearchResults.IncompletenessWarningType;
import google.registry.request.Action;
import google.registry.request.auth.AuthLevel;
import google.registry.request.auth.AuthResult;
import google.registry.request.auth.UserAuthInfo;
import google.registry.testing.FakeClock;
import google.registry.testing.FakeResponse;
import google.registry.testing.InjectRule;
import google.registry.ui.server.registrar.SessionUtils;
import java.util.Optional;
import org.joda.time.DateTime;
import org.json.simple.JSONValue;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/** Unit tests for {@link RdapHelpAction}. */
@RunWith(JUnit4.class)
public class RdapHelpActionTest {

  @Rule
  public final InjectRule inject = new InjectRule();

  private final FakeResponse response = new FakeResponse();
  private final FakeClock clock = new FakeClock(DateTime.parse("2000-01-01TZ"));
  private final SessionUtils sessionUtils = mock(SessionUtils.class);
  private final User user = new User("rdap.user@example.com", "gmail.com", "12345");
  private final UserAuthInfo userAuthInfo = UserAuthInfo.create(user, false);
  private final RdapMetrics rdapMetrics = mock(RdapMetrics.class);

  private RdapHelpAction action;

  @Before
  public void setUp() throws Exception {
    inject.setStaticField(Ofy.class, "clock", clock);

    action = new RdapHelpAction();
    action.clock = clock;
    action.fullServletPath = "https://example.tld/rdap";
    action.requestMethod = Action.Method.GET;
    action.sessionUtils = sessionUtils;
    action.authResult = AuthResult.create(AuthLevel.USER, userAuthInfo);
    action.includeDeletedParam = Optional.empty();
    action.registrarParam = Optional.empty();
    action.response = response;
    action.rdapJsonFormatter = RdapTestHelper.getTestRdapJsonFormatter();
    action.rdapWhoisServer = null;
    action.rdapMetrics = rdapMetrics;
  }

  private Object generateActualJson(String helpPath) {
    action.requestPath = RdapHelpAction.PATH + helpPath;
    action.run();
    return JSONValue.parse(response.getPayload());
  }

  private Object generateExpectedJson(String name, String expectedOutputFile) {
    return JSONValue.parse(loadFileWithSubstitutions(
        this.getClass(), expectedOutputFile, ImmutableMap.of("NAME", name)));
  }

  @Test
  public void testHelpActionMaliciousPath_notFound() throws Exception {
    assertThat(generateActualJson("../passwd")).isEqualTo(
        generateExpectedJson(
            "no help found for ../passwd", "rdap_error_404.json"));
    assertThat(response.getStatus()).isEqualTo(404);
  }

  @Test
  public void testHelpActionUnknownPath_notFound() throws Exception {
    assertThat(generateActualJson("hlarg")).isEqualTo(
        generateExpectedJson("no help found for hlarg", "rdap_error_404.json"));
    assertThat(response.getStatus()).isEqualTo(404);
  }

  @Test
  public void testHelpActionIndex_works() throws Exception {
    assertThat(generateActualJson("/index"))
        .isEqualTo(generateExpectedJson("index", "rdap_help_index.json"));
    assertThat(response.getStatus()).isEqualTo(200);
  }

  @Test
  public void testHelpActionDefault_getsIndex() throws Exception {
    assertThat(generateActualJson(""))
        .isEqualTo(generateExpectedJson("", "rdap_help_index.json"));
    assertThat(response.getStatus()).isEqualTo(200);
  }

  @Test
  public void testHelpActionSlash_getsIndex() throws Exception {
    assertThat(generateActualJson("/"))
        .isEqualTo(generateExpectedJson("", "rdap_help_index.json"));
    assertThat(response.getStatus()).isEqualTo(200);
  }

  @Test
  public void testHelpActionSyntax_works() throws Exception {
    generateActualJson("/syntax");
    assertThat(response.getStatus()).isEqualTo(200);
  }

  @Test
  public void testHelpActionTos_works() throws Exception {
    assertThat(generateActualJson("/tos"))
        .isEqualTo(generateExpectedJson("", "rdap_help_tos.json"));
    assertThat(response.getStatus()).isEqualTo(200);
  }

  @Test
  public void testHelpActionMetrics() throws Exception {
    generateActualJson("/tos");
    verify(rdapMetrics)
        .updateMetrics(
            RdapMetrics.RdapMetricInformation.builder()
                .setEndpointType(EndpointType.HELP)
                .setSearchType(SearchType.NONE)
                .setWildcardType(WildcardType.INVALID)
                .setPrefixLength(0)
                .setIncludeDeleted(false)
                .setRegistrarSpecified(false)
                .setRole(RdapAuthorization.Role.PUBLIC)
                .setRequestMethod(Action.Method.GET)
                .setStatusCode(200)
                .setIncompletenessWarningType(IncompletenessWarningType.COMPLETE)
                .build());
  }
}