/*
 * Copyright 2013-2017 consulo.io
 *
 * 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.intellij.openapi.updateSettings.impl.pluginsAdvertisement;

import com.intellij.ide.plugins.IdeaPluginDescriptor;
import com.intellij.ide.plugins.RepositoryHelper;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.progress.Task;
import com.intellij.openapi.project.Project;
import com.intellij.util.containers.ContainerUtil;
import consulo.ide.updateSettings.UpdateSettings;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

import java.util.Collections;
import java.util.List;
import java.util.function.Consumer;

/**
 * @author VISTALL
 * @since 05-May-17
 */
public class PluginsAdvertiserHolder {
  private static List<IdeaPluginDescriptor> ourLoadedPluginDescriptors;

  @NotNull
  public static List<IdeaPluginDescriptor> getLoadedPluginDescriptors() {
    return ourLoadedPluginDescriptors == null ? Collections.emptyList() : ourLoadedPluginDescriptors;
  }

  public static void update(@Nullable List<IdeaPluginDescriptor> list) {
    ourLoadedPluginDescriptors = ContainerUtil.isEmpty(list) ? null : list;
  }

  public static void initiaze(@NotNull Project project, @NotNull Consumer<List<IdeaPluginDescriptor>> consumer) {
    UpdateSettings updateSettings = UpdateSettings.getInstance();
    if (!updateSettings.isEnable()) {
      return;
    }

    if (ourLoadedPluginDescriptors != null) {
      ApplicationManager.getApplication().executeOnPooledThread(() -> consumer.accept(ourLoadedPluginDescriptors));
      return;
    }

    Task.Backgroundable.queue(project, "Loading plugin list", false, indicator -> {
      List<IdeaPluginDescriptor> pluginDescriptors = Collections.emptyList();
      try {
        pluginDescriptors = RepositoryHelper.loadPluginsFromRepository(indicator, updateSettings.getChannel());

        ourLoadedPluginDescriptors = pluginDescriptors;

        if (pluginDescriptors.isEmpty()) {
          return;
        }

        consumer.accept(pluginDescriptors);
      }
      catch (Exception ignored) {
      }
    });
  }
}