/*
 * Copyright 2016 The Bazel 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 com.google.idea.blaze.golang.sync;

import static com.google.common.truth.Truth.assertThat;

import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import com.google.idea.blaze.base.BlazeTestCase;
import com.google.idea.blaze.base.model.primitives.LanguageClass;
import com.google.idea.blaze.base.model.primitives.WorkspaceType;
import com.google.idea.blaze.base.projectview.ProjectView;
import com.google.idea.blaze.base.projectview.ProjectViewSet;
import com.google.idea.blaze.base.projectview.section.ListSection;
import com.google.idea.blaze.base.projectview.section.ScalarSection;
import com.google.idea.blaze.base.projectview.section.sections.AdditionalLanguagesSection;
import com.google.idea.blaze.base.projectview.section.sections.WorkspaceTypeSection;
import com.google.idea.blaze.base.scope.BlazeContext;
import com.google.idea.blaze.base.scope.ErrorCollector;
import com.google.idea.blaze.base.scope.output.IssueOutput;
import com.google.idea.blaze.base.sync.BlazeSyncPlugin;
import com.google.idea.blaze.base.sync.projectview.LanguageSupport;
import com.google.idea.blaze.base.sync.projectview.WorkspaceLanguageSettings;
import com.intellij.openapi.extensions.impl.ExtensionPointImpl;
import java.util.Set;
import javax.annotation.Nullable;
import org.jetbrains.annotations.NotNull;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/** Unit tests for {@link BlazeGoSyncPlugin} */
@RunWith(JUnit4.class)
public class BlazeGoSyncPluginTest extends BlazeTestCase {

  private final ErrorCollector errorCollector = new ErrorCollector();
  private BlazeContext context;
  private ExtensionPointImpl<BlazeSyncPlugin> syncPluginEp;

  @Override
  protected void initTest(
      @NotNull Container applicationServices, @NotNull Container projectServices) {
    super.initTest(applicationServices, projectServices);

    syncPluginEp = registerExtensionPoint(BlazeSyncPlugin.EP_NAME, BlazeSyncPlugin.class);
    syncPluginEp.registerExtension(new BlazeGoSyncPlugin());
    syncPluginEp.registerExtension(new AlwaysPresentGoSyncPlugin());
    // At least one sync plugin providing a default workspace type must be present
    syncPluginEp.registerExtension(
        new BlazeSyncPlugin.Adapter() {
          @Override
          public ImmutableList<WorkspaceType> getSupportedWorkspaceTypes() {
            return ImmutableList.of(WorkspaceType.JAVA);
          }

          @Override
          public Set<LanguageClass> getSupportedLanguagesInWorkspace(WorkspaceType workspaceType) {
            return ImmutableSet.of(LanguageClass.JAVA);
          }

          @Nullable
          @Override
          public WorkspaceType getDefaultWorkspaceType() {
            return WorkspaceType.JAVA;
          }
        });
    context = new BlazeContext();
    context.addOutputSink(IssueOutput.class, errorCollector);
  }

  @Test
  public void testGoWorkspaceTypeError() {
    ProjectViewSet projectViewSet =
        ProjectViewSet.builder()
            .add(
                ProjectView.builder()
                    .add(ScalarSection.builder(WorkspaceTypeSection.KEY).set(WorkspaceType.GO))
                    .build())
            .build();
    WorkspaceLanguageSettings workspaceLanguageSettings =
        LanguageSupport.createWorkspaceLanguageSettings(projectViewSet);
    LanguageSupport.validateLanguageSettings(context, workspaceLanguageSettings);
    errorCollector.assertIssueContaining("Workspace type 'go' is not supported by this plugin");
  }

  @Test
  public void testGoAdditionalLanguageSupported() {
    ProjectViewSet projectViewSet =
        ProjectViewSet.builder()
            .add(
                ProjectView.builder()
                    .add(ScalarSection.builder(WorkspaceTypeSection.KEY).set(WorkspaceType.JAVA))
                    .add(ListSection.builder(AdditionalLanguagesSection.KEY).add(LanguageClass.GO))
                    .build())
            .build();
    WorkspaceLanguageSettings workspaceLanguageSettings =
        LanguageSupport.createWorkspaceLanguageSettings(projectViewSet);
    LanguageSupport.validateLanguageSettings(context, workspaceLanguageSettings);
    errorCollector.assertNoIssues();
    assertThat(workspaceLanguageSettings.isLanguageActive(LanguageClass.GO)).isTrue();
  }
}