xyz.karpador.godfishbot.commands.MLPCommand.java Source code

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Here is the source code for xyz.karpador.godfishbot.commands.MLPCommand.java

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/*
 * 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 java.net.URLEncoder;
import java.util.HashMap;

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 MLPCommand extends Command {

    private final HashMap<String, String> knownImages = new HashMap<>();

    @Override
    public String getName() {
        return "mlp";
    }

    @Override
    public String getUsage() {
        return "/mlp <tags>";
    }

    @Override
    public String getDescription() {
        return "Get an image from Derpibooru.\n<tags>: Search tags separated by commas";
    }

    @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://derpibooru.org/search.json?q="
                    + URLEncoder.encode(params, "UTF-8").replace("%20", "+");
            URL url = new URL(urlString);
            HttpsURLConnection con = (HttpsURLConnection) url.openConnection();
            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 totalHits = resultJson.getInt("total");
                if (totalHits < 1) {
                    result.replyToId = message.getMessageId();
                    result.text = "No results found.";
                    return result;
                }
                int pageNumber = 1;
                if (totalHits > 20) // Generate a valid page number.
                    pageNumber = Main.Random.nextInt((int) Math.ceil(totalHits / 20)) + 1;
                if (pageNumber > 1) {
                    urlString += "&page=" + pageNumber;
                    url = new URL(urlString);
                    con = (HttpsURLConnection) url.openConnection();
                    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 hits = resultJson.getJSONArray("search");
                int imageIndex = Main.Random.nextInt(hits.length());
                JSONObject img = hits.getJSONObject(imageIndex);
                result.imageUrl = "https:" + img.getString("image");
                if (result.imageUrl.toLowerCase().endsWith(".gif"))
                    result.isGIF = true;
                if (knownImages.containsKey(result.imageUrl))
                    result.mediaId = knownImages.get(result.imageUrl);
                result.text = "From derpibooru.org";
                //+ "(Source: " + img.getString("source_url") + ")";
                if (!img.isNull("source_url"))
                    result.text += " (Source: " + img.getString("source_url") + ")";
            } else {
                result.text = "derpibooru.org returned error code " + con.getResponseCode() + ": "
                        + con.getResponseMessage();
            }
        } catch (IOException | JSONException e) {
            e.printStackTrace();
            return null;
        }
        return result;
    }

    @Override
    public void processSendResult(String mediaUrl, String mediaId) {
        knownImages.put(mediaUrl, mediaId);
    }
}