Java tutorial
/* * Copyright (C) 2017 Follpvosten * * This program 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 2 * of the License, or (at your option) any later version. * * This program 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 this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ package xyz.karpador.godfishbot.commands; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import static java.net.HttpURLConnection.HTTP_OK; import java.net.URL; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; import org.telegram.telegrambots.api.objects.Message; import xyz.karpador.godfishbot.Main; import javax.net.ssl.HttpsURLConnection; /** * * @author Follpvosten */ public class GofCommand extends Command { @Override public String getName() { return "gof"; } @Override public String getUsage() { return "/gof <tag>"; } @Override public String getDescription() { return "Get a GIF from gifbase (by search query)"; } @Override public CommandResult getReply(String params, Message message, String myName) { if (params == null) return new CommandResult(getUsage() + "\n" + getDescription()); CommandResult result = new CommandResult(); try { String urlString = "https://gifbase.com/tag/" + params + "?format=json"; URL url = new URL(urlString); HttpsURLConnection con = (HttpsURLConnection) url.openConnection(); con.setConnectTimeout(4000); if (con.getResponseCode() == HTTP_OK) { BufferedReader br = new BufferedReader(new InputStreamReader(con.getInputStream())); StringBuilder httpResult = new StringBuilder(); String line; while ((line = br.readLine()) != null) httpResult.append(line); JSONObject resultJson = new JSONObject(httpResult.toString()); int pageCount = resultJson.optInt("page_count", 1); if (pageCount > 1) { int page = Main.Random.nextInt(pageCount - 1) + 1; if (page != resultJson.getInt("page_current")) { urlString += "&p=" + page; url = new URL(urlString); con = (HttpsURLConnection) url.openConnection(); con.setConnectTimeout(4000); if (con.getResponseCode() == HTTP_OK) { br = new BufferedReader(new InputStreamReader(con.getInputStream())); httpResult.setLength(0); while ((line = br.readLine()) != null) httpResult.append(line); resultJson = new JSONObject(httpResult.toString()); } } } JSONArray gifs = resultJson.optJSONArray("gifs"); if (gifs != null) { JSONObject gif = gifs.getJSONObject(Main.Random.nextInt(gifs.length())); result.imageUrl = gif.getString("url"); } else return null; } else { return new CommandResult("gifbase.com responded with error code: " + con.getResponseCode() + ": " + con.getResponseMessage()); } } catch (IOException | JSONException e) { e.printStackTrace(); return null; } if (result.imageUrl == null) return null; result.isGIF = true; return result; } }