from SimpleWebSocketServer import SimpleWebSocketServer, WebSocket

import json
import socket
import os
import threading
import select
import random

SOCKPATH='/home/dario/.mpv.sock'
global mpvParser
mpvParser = None

class SocketPoller(threading.Thread):
    def __init__(self, sockParser):
        super(SocketPoller, self).__init__()
        self.sockParser = sockParser
        self.stop=False
        
        if not os.path.exists(SOCKPATH):
            raise Exception("Could not find server socket ~/.mpv.sock, exiting")
        self.sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
        self.sock.connect(SOCKPATH)
        self.buf=""

    def run(self):
        while not self.stop:
            if len( select.select([self.sock], [], [])[0] ) > 0:
                self.buf += self.sock.recv(1)
                if '\n' in self.buf:
                    self.sockParser.newData(self.buf)
                    self.buf=""
                    
    def sendData(self, data):
        if not '\n' in data:
            data+='\n'
        print "sending data '%s'"%data
        self.sock.sendall(data)

class MpvSockParser(object):
    def __init__(self):
        self.listeners = []
        self.playerState = {
            "totalDuration": 42,
            "currentDuration": 23,
            "volume": 66,
            "fileName": "No Data Yet",
            "isPlaying": False
        }
        self.poller = None
        self.waitingForCommand = None

    def registerListener(self, listener):
        self.listeners.append(listener)
    def unregisterListener(self, listener):
        self.listeners.remove(listener)
    def notifyListeners(self):
        for l in self.listeners:
            l.dataNotify(self.playerState)
    
    def startPoll(self):
        self.poller = SocketPoller(self)
        
        self.poller.sendData('{"command":["observe_property",1,"time-pos"]}')
        self.poller.sendData('{"command":["observe_property",2,"volume"]}')
        self.poller.sendData('{"command":["observe_property",3,"filename"]}')
        self.poller.sendData('{"command":["observe_property",4,"duration"]}')
        
        self.poller.run()

    def newData(self, data):
        data = json.loads(data)
        # mpv-generated event
        if "event" in data:
            self.processEvent(data)
        # answer to our request
        if 'error' in data:
            self.processCommand(data)
            
    def processEvent(self, data):
        sendNotify = False
        if "data" in data and data["data"]==None:
            return
            
        print data
        if data['event'] == 'property-change' and data['name'] == 'time-pos':
            self.playerState['currentDuration'] = int(data['data'])
        if data['event'] == 'property-change' and data['name'] == 'volume':
            self.playerState['volume'] = int(data['data'])
        if data['event'] == 'property-change' and data['name'] == 'filename':
            self.playerState['fileName'] = data['data']
        if data['event'] == 'property-change' and data['name'] == 'duration':
            self.playerState['totalDuration'] = int(data['data'])
        if data['event'] == 'pause':
            self.playerState['isPlaying'] = False
        if data['event'] == 'unpause':
            self.playerState['isPlaying'] = True
        
        print self.playerState
        self.notifyListeners()

    def processCommand(self, data):
        pass
    def sendCommand(self, command):
        if command[command] == "seek":
            pass

class WSHandler(WebSocket):
    def handleMessage(self):
        #self.sendMessage(self.data)
        print "got message '%s'"%(self.data)
    def handleConnected(self):
        global mpvParser
        mpvParser.registerListener(self)
        print self.address, 'connected'
    def handleClose(self):
        global mpvParser
        print self.address, 'closed'
        mpvParser.unregisterListener(self)
    def dataNotify(self, data):
        data['type'] = 'status'
        self.sendMessage(data)
        

if __name__=='__main__':
    global mpvParser
    mpvParser = MpvSockParser()
    mpvParser.startPoll()
    
    server = SimpleWebSocketServer('', 8000, SimpleEcho)
    server.serveforever()