/*
 * Copyright 2000-2014 JetBrains s.r.o.
 *
 * 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 org.jetbrains.plugins.gradle.codeInsight;

import com.intellij.ProjectTopics;
import com.intellij.openapi.components.ServiceManager;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.openapi.externalSystem.model.DataNode;
import com.intellij.openapi.externalSystem.model.project.ProjectData;
import com.intellij.openapi.externalSystem.service.project.ExternalProjectRefreshCallback;
import com.intellij.openapi.externalSystem.service.project.manage.ProjectDataManager;
import com.intellij.openapi.externalSystem.util.DisposeAwareProjectChange;
import com.intellij.openapi.externalSystem.util.ExternalSystemApiUtil;
import com.intellij.openapi.externalSystem.util.ExternalSystemConstants;
import com.intellij.openapi.externalSystem.util.ExternalSystemUtil;
import com.intellij.openapi.externalSystem.service.execution.ProgressExecutionMode;
import com.intellij.openapi.fileEditor.FileEditor;
import com.intellij.openapi.module.Module;
import com.intellij.openapi.module.ModuleUtilCore;
import com.intellij.openapi.progress.ProcessCanceledException;
import com.intellij.openapi.project.IndexNotReadyException;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.roots.ModuleRootAdapter;
import com.intellij.openapi.roots.ModuleRootEvent;
import com.intellij.openapi.roots.ex.ProjectRootManagerEx;
import com.intellij.openapi.util.Key;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.openapi.vfs.LocalFileSystem;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.ui.EditorNotificationPanel;
import com.intellij.ui.EditorNotifications;
import org.gradle.util.GUtil;
import org.gradle.wrapper.WrapperConfiguration;
import org.gradle.wrapper.WrapperExecutor;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.plugins.gradle.settings.DistributionType;
import org.jetbrains.plugins.gradle.settings.GradleProjectSettings;
import org.jetbrains.plugins.gradle.settings.GradleSettings;
import org.jetbrains.plugins.gradle.util.GradleBundle;
import org.jetbrains.plugins.gradle.util.GradleConstants;
import org.jetbrains.plugins.gradle.util.GradleUtil;

import java.io.File;
import java.net.URI;
import java.util.Collections;
import java.util.Properties;
import java.util.regex.Pattern;

/**
 * @author Vladislav.Soroka
 * @since 9/13/13
 */
public class UseDistributionWithSourcesNotificationProvider extends EditorNotifications.Provider<EditorNotificationPanel> {
  public static final Pattern GRADLE_SRC_DISTRIBUTION_PATTERN;
  private static final Logger LOG = Logger.getInstance("#" + UseDistributionWithSourcesNotificationProvider.class.getName());
  private static final Key<EditorNotificationPanel> KEY = Key.create("gradle.notifications.use.distribution.with.sources");
  private static final String ALL_ZIP_DISTRIBUTION_URI_SUFFIX = "-all.zip";
  private final Project myProject;

  static {
    GRADLE_SRC_DISTRIBUTION_PATTERN = Pattern.compile("https?\\\\?://services\\.gradle\\.org.*" + ALL_ZIP_DISTRIBUTION_URI_SUFFIX);
  }

  public UseDistributionWithSourcesNotificationProvider(Project project, final EditorNotifications notifications) {
    myProject = project;
    project.getMessageBus().connect(project).subscribe(ProjectTopics.PROJECT_ROOTS, new ModuleRootAdapter() {
      @Override
      public void rootsChanged(ModuleRootEvent event) {
        notifications.updateAllNotifications();
      }
    });
  }

  @NotNull
  @Override
  public Key<EditorNotificationPanel> getKey() {
    return KEY;
  }

  @Override
  public EditorNotificationPanel createNotificationPanel(@NotNull VirtualFile file, @NotNull FileEditor fileEditor) {
    try {
      if (GradleConstants.DEFAULT_SCRIPT_NAME.equals(file.getName()) ||
          GradleConstants.SETTINGS_FILE_NAME.equals(file.getName())) {

        final Module module = ModuleUtilCore.findModuleForFile(file, myProject);
        if (module == null) return null;
        final String rootProjectPath = getRootProjectPath(module);
        if (rootProjectPath == null) return null;
        final GradleProjectSettings settings = GradleSettings.getInstance(module.getProject()).getLinkedProjectSettings(rootProjectPath);
        if (settings == null || settings.getDistributionType() != DistributionType.DEFAULT_WRAPPED) return null;
        if (settings.isDisableWrapperSourceDistributionNotification()) return null;
        if (isWrapperDistributionWithSourcesUsed(rootProjectPath)) return null;

        final EditorNotificationPanel panel = new EditorNotificationPanel();
        panel.setText(GradleBundle.message("gradle.notifications.use.distribution.with.sources"));
        panel.createActionLabel(GradleBundle.message("gradle.notifications.hide.tip"), new Runnable() {
          @Override
          public void run() {
            settings.setDisableWrapperSourceDistributionNotification(true);
            EditorNotifications.getInstance(module.getProject()).updateAllNotifications();
          }
        });
        panel.createActionLabel(GradleBundle.message("gradle.notifications.apply.suggestion"), new Runnable() {
          @Override
          public void run() {
            updateDefaultWrapperConfiguration(rootProjectPath);
            EditorNotifications.getInstance(module.getProject()).updateAllNotifications();
            final ProjectDataManager projectDataManager = ServiceManager.getService(ProjectDataManager.class);
            ExternalSystemUtil.refreshProject(
              module.getProject(), GradleConstants.SYSTEM_ID, settings.getExternalProjectPath(),
              new ExternalProjectRefreshCallback() {
                @Override
                public void onSuccess(@Nullable final DataNode<ProjectData> externalProject) {
                  if (externalProject == null) {
                    return;
                  }
                  ExternalSystemApiUtil.executeProjectChangeAction(true, new DisposeAwareProjectChange(module.getProject()) {
                    @Override
                    public void execute() {
                      ProjectRootManagerEx.getInstanceEx(module.getProject()).mergeRootsChangesDuring(new Runnable() {
                        @Override
                        public void run() {
                          projectDataManager.importData(externalProject.getKey(), Collections.singleton(externalProject), module.getProject(), true);
                        }
                      });
                    }
                  });
                }

                @Override
                public void onFailure(@NotNull String errorMessage, @Nullable String errorDetails) {
                }
              }, true, ProgressExecutionMode.START_IN_FOREGROUND_ASYNC);
          }
        });
        return panel;
      }
    }
    catch (ProcessCanceledException ignored) {
    }
    catch (IndexNotReadyException ignored) {
    }

    return null;
  }

  private static void updateDefaultWrapperConfiguration(@NotNull String linkedProjectPath) {
    try {
      final File wrapperPropertiesFile = GradleUtil.findDefaultWrapperPropertiesFile(linkedProjectPath);
      if (wrapperPropertiesFile == null) return;
      final WrapperConfiguration wrapperConfiguration = GradleUtil.getWrapperConfiguration(linkedProjectPath);
      if (wrapperConfiguration == null) return;
      String currentDistributionUri = wrapperConfiguration.getDistribution().toString();
      if (StringUtil.endsWith(currentDistributionUri, ALL_ZIP_DISTRIBUTION_URI_SUFFIX)) return;

      final String distributionUri =
        currentDistributionUri.substring(0, currentDistributionUri.lastIndexOf('-')) + ALL_ZIP_DISTRIBUTION_URI_SUFFIX;

      wrapperConfiguration.setDistribution(new URI(distributionUri));
      Properties wrapperProperties = new Properties();
      wrapperProperties.setProperty(WrapperExecutor.DISTRIBUTION_URL_PROPERTY, wrapperConfiguration.getDistribution().toString());
      wrapperProperties.setProperty(WrapperExecutor.DISTRIBUTION_BASE_PROPERTY, wrapperConfiguration.getDistributionBase());
      wrapperProperties.setProperty(WrapperExecutor.DISTRIBUTION_PATH_PROPERTY, wrapperConfiguration.getDistributionPath());
      wrapperProperties.setProperty(WrapperExecutor.ZIP_STORE_BASE_PROPERTY, wrapperConfiguration.getZipBase());
      wrapperProperties.setProperty(WrapperExecutor.ZIP_STORE_PATH_PROPERTY, wrapperConfiguration.getZipPath());
      GUtil.saveProperties(wrapperProperties, new File(wrapperPropertiesFile.getPath()));
      LocalFileSystem.getInstance().refreshIoFiles(Collections.singletonList(wrapperPropertiesFile));
    }
    catch (Exception e) {
      LOG.error(e);
    }
  }

  private static boolean isWrapperDistributionWithSourcesUsed(String linkedProjectPath) {
    WrapperConfiguration wrapperConfiguration = GradleUtil.getWrapperConfiguration(linkedProjectPath);
    // currently only wrapped distribution takes into account
    if (wrapperConfiguration == null) return true;
    String distributionUri = wrapperConfiguration.getDistribution().toString();
    return GRADLE_SRC_DISTRIBUTION_PATTERN.matcher(distributionUri).matches();
  }

  @Nullable
  private static String getRootProjectPath(@NotNull Module module) {
    String externalSystemId = module.getOptionValue(ExternalSystemConstants.EXTERNAL_SYSTEM_ID_KEY);
    if (externalSystemId == null || !GradleConstants.SYSTEM_ID.toString().equals(externalSystemId)) {
      return null;
    }

    String path = module.getOptionValue(ExternalSystemConstants.ROOT_PROJECT_PATH_KEY);
    return StringUtil.isEmpty(path) ? null : path;
  }
}