// ==PREPROCESSOR==
// @name "Sample9 TextFile"
// @author "Junya Renno"
// ==/PREPROCESSOR==

var WshShell = new ActiveXObject("WScript.Shell");
var fso = new ActiveXObject("Scripting.FileSystemObject");

var g_font = gdi.Font("‚l‚r –¾’©", 14);
var filename = fb.ProfilePath + "nowtitle.txt";
var tf_query = "";
var from_file_data = "";

if (fb.GetNowPlaying()){
    tf_query = get_tf("%title%,%album artist%");
}

function RGB(r, g, b) {
    return (0xff000000 | (r << 16) | (g << 8) | (b));
}

function on_paint(gr){
    if (tf_query){
        tf_query_view = "---  Now Playing  ---\n" + tf_query.replace(/,/g,"\n");
        gr.DrawString(tf_query_view,g_font,RGB(0,0,0),20,20,window.Width-20,100);
    }
    if (from_file_data){
        from_file_data_view =  "--- Read File Data ---\n" + from_file_data.replace(/,/g,"\n");
        gr.DrawString(from_file_data_view,g_font,RGB(0,0,0),20,100,window.Width-20,100);
    }
}   

function on_playback_new_track(){
    if(fso.FileExists(filename)){
		from_file_data = read_file();
	}
    tf_query = get_tf("%title%,%album artist%");
    if (tf_query){
        write_file(tf_query);
    }
    window.Repaint();
}

function on_playback_stop(){
    window.Repaint();
}
function get_tf(tf){
 	if (fb.GetNowPlaying()){
        return fb.Titleformat(tf).eval();
 	}
}

function write_file(text){
	stream = new ActiveXObject("ADODB.Stream");
	stream.type = 2;
	stream.charset = "utf-8";
    
    stream.open();
    stream.writeText(text+"\r\n");
    stream.saveToFile(filename, 2);
    stream.close();
}

function read_file(){
	stream = new ActiveXObject("ADODB.Stream");
	stream.type = 2;
	stream.charset = "utf-8";

	stream.open();
	stream.loadFromFile(filename);
    text_line = stream.readText(-2);
	stream.close();
    return text_line;
}