content: /*
   * Copyright 2016 Andre Pfeiler
   *
   * This file is part of FindBugs-IDEA.
   *
   * FindBugs-IDEA is free software: you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation, either version 3 of the License, or
   * (at your option) any later version.
   *
   * FindBugs-IDEA is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with FindBugs-IDEA.  If not, see <http://www.gnu.org/licenses/>.
   */
  package org.twodividedbyzero.idea.findbugs.core;
  
  import com.google.gson.GsonBuilder;
  import com.intellij.openapi.progress.ProgressIndicator;
  import com.intellij.util.io.HttpRequests;
  import com.intellij.util.io.RequestBuilder;
  import org.jetbrains.annotations.NotNull;
  import org.jetbrains.annotations.Nullable;
  import org.twodividedbyzero.idea.findbugs.common.util.IoUtil;
  import org.twodividedbyzero.idea.findbugs.resources.ResourcesLoader;
  
  import java.io.IOException;
  import java.io.Reader;
  
  final class PluginVersionChecker {
  
  	private PluginVersionChecker() {
  	}
  
  	@Nullable
  	static String getLatestVersion(@NotNull final ProgressIndicator indicator) throws IOException {
  		final String url = getLatestReleaseUrl();
  		indicator.setText(ResourcesLoader.getString("error.submitReport.retrieve", url));
  		final RequestBuilder request = HttpRequests
  				.request(url)
  				.accept("application/vnd.github.v2+json");
  		return request.connect(new HttpRequests.RequestProcessor<String>() {
  			@Override
  			public String process(@NotNull final HttpRequests.Request request) throws IOException {
  				final Reader reader = request.getReader();
  				try {
  					LatestRelease latestRelease = new GsonBuilder().create().fromJson(reader, LatestRelease.class);
  					return latestRelease.name;
  				} finally {
  					IoUtil.safeClose(reader);
  				}
  			}
  		});
  	}
  
  	@NotNull
  	private static String getLatestReleaseUrl() {
  		// https support only
  		return "https://api.github.com/repos/andrepdo/findbugs-idea/releases/latest";
  	}
  
  	private static class LatestRelease {
  		public String name;
  	}
  }
  