dzen.js

#!/usr/bin/env node
'use strict';

var fs            = require('fs'),
    moment        = require('moment'),
    underscore    = require('underscore'),
    child_process = require('child_process'),
    spawn         = child_process.spawn,
    exec          = child_process.exec;

var echo = function(d) {
	process.stdout.write(d);
};

setInterval(function() {
	panel.separator();
	panel.mpd();
	panel.net();
	panel.battery();
	panel.temp();
	panel.disk();
	panel.separator();
	panel.memory();
	panel.cpu();
	panel.separator();
	panel.date();
	echo('\n');
}, 1000);

var panel = {
	$click: function(str, command) {
		return '^ca(1, ' + command + ' 1> /dev/null)' + str + '^ca()';
	},
	$fgcolor: function(color, str) {
		return '^fg(' + color + ')' + str + '^fg()';
	},
	$bgcolor: function(color, str) {
		return '^bg(' + color + ')' + str + '^bg()';
	},
	$icon: function(path, color) {
		if(typeof(color) === 'undefined') color = '#69C';
		return panel.$fgcolor(color, ' ^i(' + process.env.HOME + '/.icons/dzen/' + path + '.xbm) ');
	},
	separator: function() {
		echo(' ' + panel.$fgcolor('#666', ''));
	},
	date: function() {
		echo(panel.$click(panel.$icon('clock') + moment().format('ddd, MMM D, h:mm:ss a'), 'gsimplecal'));
	},
	mpd: underscore.throttle(function() {
		exec('mpc current', function (error, stdout, stderr) {
			process.stderr.write('mpd called\n');
			if(error === null && stdout !== '') {
				//TODO: paused indicator
				var spl = stdout.replace(/\n/gm, '').split('-');
				var str = spl[0] + panel.$fgcolor('#666', '-') + spl[1];
				panel.separator();
				echo(panel.$click(panel.$icon('note') + str, 'mpc toggle --no-status'));
			}
		});
	}, 5000),
	cpu: function() {
		var usage = 100;
		echo(panel.$icon('cpu') + usage + panel.$fgcolor('#666', '%'));
	},
	battery: function() {
		var hasBattery = function() {
			return true;
		};
		if(hasBattery() !== false) {
			var bat_level = '0',
			    icon = panel.$icon('bat_full_02');
			if(bat_level <= 15) {
				icon = panel.$icon('bat_empty_02', '#F00');
			} else if(bat_level < 40) {
				icon = panel.$icon('bat_low_02');
			}
			echo(icon + bat_level + panel.$fgcolor('#666', '%'));
			panel.separator();
		}
	},
	memory: function() {
		var str = 100;
		echo(panel.$icon('mem') + str + panel.$fgcolor('#666', '%'));
	},
	net: function() {
		var device = 1,
		    wifiStrength = 1,
		    upSpeed = 1,
		    downSpeed = 1;
		// is on internet?
		// is on wifi?
		if(device) {
			if(wifiStrength) {
				echo(panel.$icon('wifi_02') + wifiStrength + panel.$fgcolor('#666', '%'));
			}
			if(upSpeed) {
				echo(panel.$icon('net_up_01') + upSpeed + panel.$fgcolor('#666', 'Kb/s'));
			}
			if(downSpeed) {
				echo(panel.$icon('net_down_01') + downSpeed + panel.$fgcolor('#666', 'Kb/s'));
			}
			panel.separator();
		}
	},
	disk: function() {
		var usage = 100;
		echo(panel.$icon('diskette') + usage + panel.$fgcolor('#666', '%'));
	},
	temp: function() {
		var temp = 100;
		echo(panel.$icon('temp') + temp + panel.$fgcolor('#666', '°C'));
	}
};