"""Handle dispatcher API requests."""

from __future__ import unicode_literals

import logging
import os
import xmlrpclib

from django.conf import settings
from django.http import Http404
from rest_framework.views import APIView
from rest_framework.response import Response
from rest_framework import generics, status

from dispatch.models import Dispatcher
from dispatch.serializers import DispatchMessageSerializer, DispatcherSerializer


log = logging.getLogger('dispatch.views')


class DispatcherList(generics.ListAPIView):

    """List all dispatchers."""

    queryset = Dispatcher.objects.all()
    serializer_class = DispatcherSerializer


class DispatcherDetail(generics.RetrieveAPIView):

    """Detail the given dispatcher."""

    queryset = Dispatcher.objects.all()
    serializer_class = DispatcherSerializer


class DispatchMessage(APIView):

    """Send a message to the given dispatcher."""

    queryset = Dispatcher.objects.none()

    def get_object(self, pk):
        try:
            return Dispatcher.objects.get(pk=pk)
        except Dispatcher.DoesNotExist:
            raise Http404

    def get(self, request, pk, format=None):
        dispatcher = self.get_object(pk)
        return Response({'message': ""})

    def post(self, request, pk, format=None):
        dispatcher = self.get_object(pk)
        serializer = DispatchMessageSerializer(data=request.data)
        if serializer.is_valid():
            if dispatcher.type == Dispatcher.PRIVMSG_TYPE:
                bot_url = 'http://{0:s}:{1:d}/'.format(settings.IRCBOT_XMLRPC_HOST, settings.IRCBOT_XMLRPC_PORT)
                bot = xmlrpclib.ServerProxy(bot_url)
                log.debug("sending '%s' to channel %s", serializer.data['message'], dispatcher.destination)
                bot.privmsg(dispatcher.destination, serializer.data['message'])
                return Response({'status': "OK"})
            elif dispatcher.type == Dispatcher.FILE_TYPE:
                filename = os.path.abspath(dispatcher.destination)
                log.debug("sending '%s' to file %s", serializer.data['message'], filename)
                with open(filename, 'w') as f:
                    f.write(serializer.data['message'])
                    f.write('\n')
                return Response({'status': "OK"})

        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)