Spotify.java

package io.mazenmc.skypebot.modules;

import com.samczsun.skype4j.chat.messages.ReceivedMessage;
import io.mazenmc.skypebot.engine.bot.Command;
import io.mazenmc.skypebot.engine.bot.Module;
import io.mazenmc.skypebot.utils.Resource;
import io.mazenmc.skypebot.utils.Utils;

import java.io.IOException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Spotify implements Module {
    @Command(name = "open.spotify.com/track/", command = false, exact = false)
    public static void cmdSpotifyHTTP(ReceivedMessage chat) throws Exception, IOException {
        String wholeMessage = chat.getContent().asPlaintext();
        Matcher idMatcher = Resource.SPOTIFY_HTTP_REGEX.matcher(wholeMessage);

        String spotifyURI = null;

        while (idMatcher.find()) {
            spotifyURI = idMatcher.group();
        }

        if (spotifyURI == null) {
            Resource.sendMessage(chat, "Invalid Spotify ID!");
        } else {
            resolve(chat, spotifyURI);
        }
    }

    private static void resolve(ReceivedMessage chat, String spotifyURI) {
        // TODO: Do this properly
        String spotifyID;
        if (spotifyURI.contains("/")) {
            spotifyID = spotifyURI.substring(spotifyURI.lastIndexOf('/') + 1, spotifyURI.length());
        } else {
            spotifyID = spotifyURI.substring(spotifyURI.lastIndexOf(':') + 1, spotifyURI.length());
        }

        StringBuilder songMetaData = new StringBuilder();
        String response = null;
        try {
            response = Utils.getUrlSource("https://ws.spotify.com/lookup/1/?uri=http://open.spotify.com/track/" + spotifyID);
        } catch (IOException e) {
            e.printStackTrace();
        }

        // If it works but it is stupid, it is still stupid.
        assert response != null;
        Matcher songMetadataMatcher = Pattern.compile("<name>(.*?)</name>").matcher(response);

        while (songMetadataMatcher.find()) {
            String metadataItem = songMetadataMatcher.group(1);

            if (!songMetaData.toString().isEmpty()) {
                songMetaData.append(" - ");
            }

            songMetaData.append(metadataItem);
        }

        Resource.sendMessage(chat, songMetaData.toString());
        Resource.sendMessage(chat, "(music) Listen here: https://i.rotn.me/spotify/" + spotifyID + " (music)");
    }

    @Command(name = "spotify:track:", command = false, exact = false)
    public static void cmdSpotifyURI(ReceivedMessage chat) throws Exception, IOException {
        String wholeMessage = chat.getContent().asPlaintext();
        Matcher idMatcher = Resource.SPOTIFY_URI_REGEX.matcher(wholeMessage);

        String spotifyURI = null;

        while (idMatcher.find()) {
            spotifyURI = idMatcher.group();
        }

        if (spotifyURI == null) {
            Resource.sendMessage(chat, "Invalid Spotify ID!");
        } else {
            resolve(chat, spotifyURI);
        }
    }
}