from song import Song

# Use to define various operations
class Operations:
	def __init__(self,exit):
		self.song = None
		self.plist = None
		self.library = None
		self.exit = exit
		self.after = 0


	# Begin playback
	def play(self,widget,data):
		if self.song == None:	
			return
		self.song.play()


	# Pause playback
	def pause(self,widget,data):
		if self.song == None:
			return
		self.song.pause()


	def afterTrack(self,widget,data):
		if (data=="qafter") and not (self.after==1):
			self.after = 1
		elif (data=="pafter") and not (self.after==2):
			self.after = 2
		else:
			self.after = 0

	# Advance to the next song
	def next(self,widget,data):
		# Close open songs
		if self.song != None:
			self.song.close()
		if self.after == 1:
			self.exit(None,None)
		# Get next song
		index = self.plist.next()
		if index > -1:
			self.song = None
			info = self.library.data.files[index]
			self.song = Song(info,self.next)
		if index > -2:
			self.song.setInfo = self.setInfo
			if self.after != 2:
				self.song.play()
		self.after = 0


	# Mark progress on the progress bar
	def markProgress(self,widget,data):
		time = (False,None)
		while time[0] == False:
			time = self.song.curTime()
		widget.set_fraction(float(self.song.current)/float(self.song.total))
		widget.set_text(time[1].toStr()+" / "+self.song.info.length.toStr())
		#print float(self.song.current)/float(self.song.total)
		return True


	def this(self,widget,data):
		# Return if no song found
		if self.song == None:
			return
		# Return if no tags found
		if self.song.info.tags == None:
			print "Could not find any tags"
			return
		fields = ["title","artist","track-number","track-count","album"]
		for field in fields:
			if (field in self.song.info.tags.keys()) == True:
				print field+":",self.song.info.tags[field]


	# Print detailed song info
	def info(self,widget,data):
		# Return if no song found
		if self.song == None:
			return
		# Return if no tags found
		if self.song.info.tags == None:
			print "Could not find any tags"
			return
		for tag in self.song.info.tags.keys():
			print tag+":",self.song.info.tags[tag]
		print self.song.info.filename


	# Toggle random 
	def random(self,widget,data):
		self.plist.random = not self.plist.random


	def scanLib(self,dir):
		self.library.scan(dir)