NodObjC, iTunes, Scripting Bridge example

iTunes-NodObjC-scriptingbridge.js

var util = require('util');
require('NodObjC/global');
framework('ScriptingBridge');

var iTunes = SBApplication('applicationWithBundleIdentifier', 
                           NSString('stringWithUTF8String', 'com.apple.iTunes'));

if (!iTunes('isRunning')) {
    console.log('iTunes is not running');
    iTunes('run')
}
console.log(0, iTunes('name'), iTunes('name').toString());
var sel = iTunes('selection');
console.log('sel.getClassName', sel.getClassName());
console.log('sel.getClassName', sel.methods());

sel = sel('get');
console.log('sel.getClassName(post-get)', sel.getClassName());
console.log('sel.methods(post-get)', sel.methods());

console.log('iTunes.methods', iTunes.methods());
console.log('iTunes(sources).methods', iTunes('sources').methods());
console.log('iTunes(sources)(count)', iTunes('sources')('count'));

// My technique for figuring out how to work objects with ScriptingBridge 
// is to print the object, which tells me the type of the object.
// Then, call methods(n) to learn what methods it supports.  The other
// non-obvious issue is when to call the ('get') method, which forces
// evaluation of the object

// Also useful to start AppleScript Editor, and do "File->Open
// Dictionary" for the application that you are trying to script.

console.log('iTunes(sources)(objectAtLocation,0)', iTunes('sources')('objectAtIndex',0));

// The parameter 3 for the methods(3) call says how many parent
// classes to recurse through when compiling the list of methods
console.log('iTunes(sources)(objectAtLocation,0).methods', iTunes('sources')('objectAtIndex',0).methods(3));
console.log('iTunes(sources)(objectAtLocation,0)(name)', iTunes('sources')('objectAtIndex',0)('name'));

var playlist_sbarray = iTunes('sources')('objectAtIndex',0)('playlists');

// I'd like to use initWithProperties instead, but don't know how yet                                                                                                                                              
//var new_pl = iTunes('classForScriptingClass',$('playlist'))('alloc')('initWithProperties',                                                                                                                       
//                                                                   { name: $('s-TESTPLAYLIST') });                                                                                                               
var new_pl = iTunes('classForScriptingClass',$('playlist'))('alloc')('init');
console.log('new_pl', new_pl);
console.log('playlist_sbarray', playlist_sbarray);

// the setName call MUST be after the insertObject call because until it's inserted somewhere, it doesn't really exist
playlist_sbarray('insertObject', new_pl, 'atIndex', 0);
new_pl('setName',$('s-TESTPLAYLIST'));



console.log('playlist_sbarray(count)', playlist_sbarray('count'));

for (var i = playlist_sbarray('count')-1; i>=0; i--) {
    var pl = playlist_sbarray('objectAtIndex',i);
    console.log(pl('name'));
    if (pl('name').toString() === 's-Temp') {
        console.log(pl.methods(2));
        pl('delete');
    }
    if (pl('name').toString() === 's-Sublime') {
        console.log(pl('tracks'));
        var tracks_sbary = pl('tracks');
        for (var trackidx = 0; trackidx < tracks_sbary('count'); trackidx++) {
            var track_sb = tracks_sbary('objectAtIndex', trackidx);
            console.log(track_sb);
            if (trackidx === 0) {
                console.log(track_sb.methods(5));
                // the ('get') method below converts from an ITunesTrack to an ITunesFileTrack
                // necessary to fetch the 'location'
                console.log(track_sb('get')('location')('path'));
            }
        }
    }
}