#!/usr/bin/env python
#
# Martin Tournoij <carpetsmoker@rwxrwxrwx.net>
#
# <Insert OSI-approved licence of choice here>
# 

import getopt
import random
import subprocess
import sys
import time

# You can modify the values here or use the commandline arguments
musicdir = '/data/music'
playlist = '%s/playlist' % musicdir

def Usage():
	print "  Usage: %s [-hr] [-m musicdir] [-p playlist]" % sys.argv[0]
	print ""
	print "\t-h\tPrint this help message and exit."
	print "\t-m\tMusic directory."
	print "\t-p\tPlaylist file."
	print "\t-r\tRecreate playlist."
	print ""

def MakePlaylist(musicdir, playlist):
	fp = open(playlist, 'w')
	playlist = subprocess.Popen(['find', musicdir, '-type', 'f', '-and', '-name', '*\.mp3'],
		stdout=fp).communicate()[0]
	fp.close()
	sys.exit(0)

def MainLoop(musiclist, lastC):
	maxn = len(musiclist)
	null = open('/dev/null')

	# Loop & make the noise
	while True:
		try:
			r = random.randrange(0, maxn)
			mp3 = musiclist[r].replace('\n', '')

			print 'Playing %s' % mp3
			o = subprocess.Popen(['/usr/pkg/bin/mpg123', mp3], stdout=null, stderr=null).communicate()
		except KeyboardInterrupt:
			now = int(time.strftime('%s'))
			# Hit ^C in the same second: We exit. Else we continue to the next song
			if (now - lastC) == 0:
				sys.exit(0)
			break
	MainLoop(musiclist, now)

if __name__ == '__main__':
	# Get commandline options
	try:
		options, arguments = getopt.getopt(sys.argv[1:], 'm:p:hr')
	except getopt.GetoptError:
		msg, opt = sys.exc_info()[1]
		print "%s\n" % msg
		Usage()
		sys.exit(1)

	makePlaylist = False
	for opt, arg in options:
		if opt == '-h':
			Usage()
			sys.exit(0)
		elif opt == '-m':
			musicdir = arg
		elif opt == '-p':
			playlist = arg
		elif opt == '-r':
			makePlaylist = True

	if makePlaylist:
		MakePlaylist(musicdir, playlist)

	# Read playlist
	fp = open('playlist')
	musiclist = fp.readlines()
	fp.close()

	MainLoop(musiclist, 10)