Provides an ubiquity command: "lyrics", to find the lyrics for a song. Type the song in the form "Song <by> Artist". Provides suggestions as you type. Uses lyricwiki.org API for fetching lyrics and last.fm webservices API for providing suggestions.

lyrics.js

/*
* Author: Abhinav Sarkar <abhinav.sarkar@gmail.com>
* License: MPL 1.1
*
* Provides an ubiquity command: "lyrics", to find the lyrics for a song.
* Usage: Type the song in the form "Song <by> Artist". Provides suggestions as you type.
* Uses lyricwiki.org API for fetching lyrics and last.fm webservices API for
* providing suggestions.
*/


var noun_type_song = {
    _name: "song",
    _suggestions: [],
    suggest: function(text, html, callback) {
        track = parseTrack(text);
        var baseUrl = "http://ws.audioscrobbler.com/2.0/";
        var params = {
            'method':'track.search',
            'track':track['song'],
            'api_key':'b25b959554ed76058ac220b7b2e0a026',
            'limit':'3',
            'raw':'true'
        };
        if (track['artist'] != null && track['artist'] != "")
            params['artist'] = track['artist'];

        jQuery.get(baseUrl, params, function(xml) {
            suggestions = [];
            jQuery(xml).find("trackmatches>track").each(function() {
                that = this;
                [song, artist] = jQuery.map(['name', 'artist'], function(item) {
                    return jQuery.trim(jQuery(that).find(item)[0].textContent);
                });
                //CmdUtils.log(artist + " - " + song);
                suggestion = {'song': song, 'artist': artist};
                suggestions.push(suggestion);
            });
            noun_type_song._suggestions = suggestions;
        });

        goodSuggestions = jQuery.map(noun_type_song._suggestions, function(suggestion) {
            track = suggestion['song'] + " by " + suggestion['artist'];
            return (track.match(text, "i")) ? CmdUtils.makeSugg(track) : null;
        }).slice(0, 3);

        return (goodSuggestions.length > 0) ? goodSuggestions : [CmdUtils.makeSugg(text)];
    }
}

function processLyrics(track, callback) {
    var baseUrl = "http://lyricwiki.org/api.php";
    var params = {artist: track['artist'], song: track['song'], fmt: "json"};
    jQuery.getJSON(baseUrl, params, callback);
}

function parseTrack(track) {
    track = jQuery.trim(track);
    if (track.lastIndexOf("by") != -1) {
        var song = jQuery.trim(track.substr(0, track.lastIndexOf("by")));
        var artist = jQuery.trim(track.substr(track.lastIndexOf("by")+2));
        return {'song': song, 'artist': artist};
    } else
        return {'song': track, 'artist': ""};
}

CmdUtils.CreateCommand({
    name: "lyrics",
    author: {name: "Abhinav Sarkar", email: "abhinav.sarkar@gmail.com"},
    license: "MPL",
    description: "Shows the lyrics for a song.",
    help: "Type the song in the form \"Song <by> Artist\". Provides suggestions as you type.",
    takes: {track: noun_type_song},
    preview: function(pblock, track) {
        track = parseTrack(track.text)
        song = track['song'];
        artist = track['artist'];

        if (song.length < 1 || artist.length < 1) {
            pblock.innerHTML = "Searches for lyrics of the song";
            return;
        }
        processLyrics(track, function(json) {
            lyricsTemplate = "<b>${artist}</b> - <b>${song}</b><br/><pre style='overflow-y:auto;max-height:500px'>${lyrics}</pre>";
            pblock.innerHTML = CmdUtils.renderTemplate(lyricsTemplate, json);
        });
    },
    execute: function(track) {
        track = parseTrack(track.text)
        processLyrics(track, function(json) {
            Utils.openUrlInBrowser(json['url']);
        });
    }
});