#!/usr/bin/python

from SimpleWebSocketServer import SimpleWebSocketServer, WebSocket
import json
import socket
import os
import threading
import select
import random
import SimpleHTTPServer
import SocketServer


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):
        print "sending data '%s'"%data
        if not '\n' in data:
            data+='\n'
        self.sock.sendall(data)

class MpvSockParser(object):
    def __init__(self):
        self.listeners = []
        self.playerState = {
            "totalDuration": 42.0,
            "currentDuration": 23.0,
            "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.sendData('{"command":["observe_property",5,"mute"]}')
        self.poller.sendData('{"command":["get_property","pause"],"request_id":10}')
        self.poller.sendData('{"command":["get_property","mute"],"request_id":11}')
        
        self.poller.daemon = True
        self.poller.start()

    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 = True
        if "data" in data and data["data"]==None:
            return
            
        if data['event'] == 'property-change' and data['name'] == 'time-pos':
            oldCur = self.playerState['currentDuration']
            curCur = int(data['data'])
            if curCur - oldCur < 1:
                sendNotify = False
            self.playerState['currentDuration'] = curCur
        if data['event'] == 'property-change' and data['name'] == 'volume':
            self.playerState['volume'] = int(data['data'])
        if data['event'] == 'property-change' and data['name'] == 'mute':
            self.playerState['isMuted'] = 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
        
        if sendNotify:
            print self.playerState
            self.notifyListeners()

    def processCommand(self, data):
        if "request_id" in data and data['request_id'] == 10:
            self.playerState['isPlaying'] = not data["data"]
        if "request_id" in data and data['request_id'] == 11:
            self.playerState['isMuted'] = data["data"]
        
    def sendCommand(self, command):
        if command["command"] == "play":
            self.poller.sendData('{ "command": ["set_property", "pause", false] }')
        if command["command"] == "pause":
            self.poller.sendData('{ "command": ["set_property", "pause", true] }')
        if command["command"] == "mute":
            self.poller.sendData('{ "command": ["set_property", "mute", true] }')
        if command["command"] == "unmute":
            self.poller.sendData('{ "command": ["set_property", "mute", false] }')
        if command["command"] == "seek":
            self.poller.sendData('{ "command": ["seek", "%s", "absolute"] }'%command['seekValue'])
        if command["command"] == "volume":
            self.poller.sendData('{ "command": ["set", "volume", "%s"] }'%command['volume'])
        if command["command"] == "seekChapter":
            if command['direction'] == 'forward':
                direction = +1
            elif command['direction'] == 'backward':
                direction = -1
            self.poller.sendData('{ "command": ["add", "chapter", %s] }'%direction)

class WSHandler(WebSocket):
    def handleMessage(self):
        global mpvParser
        command = json.loads(self.data)
        print 'got command %s'%command
        mpvParser.sendCommand(command)
    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(unicode( json.dumps(data) ))
        


if __name__=='__main__':
    global mpvParser
    mpvParser = MpvSockParser()
    mpvParser.startPoll()
    
    os.chdir('../client/')
    SocketServer.TCPServer.allow_reuse_address = True
    httpd = SocketServer.TCPServer(("", 8001), SimpleHTTPServer.SimpleHTTPRequestHandler)

    wsd = SimpleWebSocketServer('', 8000, WSHandler)
    
    wsThread = threading.Thread(target=wsd.serveforever)
    wsThread.daemon=True
    wsThread.start()

    httpd.serve_forever()