from datetime import datetime
import json
from couchpotato.core.event import addEvent
from couchpotato.core.helpers.encoding import tryUrlencode
from couchpotato.core.helpers.variable import cleanHost
from couchpotato.core.logger import CPLog
from couchpotato.core.notifications.base import Notification
from urllib2 import URLError
from xml.dom import minidom
import traceback
import requests

try:
    import xml.etree.cElementTree as etree
except ImportError:
    import xml.etree.ElementTree as etree

log = CPLog(__name__)


class Plex(Notification):
    client_update_time = 5 * 60

    def __init__(self):
        super(Plex, self).__init__()
        self.clients = {}
        self.clients_updated = None
        addEvent('renamer.after', self.addToLibrary)

    def updateClients(self, force=False):
        if not self.conf('media_server'):
            log.warning("Plex media server hostname is required")
            return

        since_update = ((datetime.now() - self.clients_updated).total_seconds())\
            if self.clients_updated is not None else None

        if force or self.clients_updated is None or since_update > self.client_update_time:
            self.clients = {}

            client_result = etree.fromstring(self.urlopen('http://%s:32400/clients' % self.conf('media_server')))

            hosts = [x.strip().lower() for x in self.conf('clients').split(',')]

            for server in client_result.findall('Server'):
                if server.get('name').lower() in hosts:
                    hosts.remove(server.get('name').lower())
                    protocol = server.get('protocol', 'xbmchttp')

                    if protocol in ['xbmcjson', 'xbmchttp']:
                        self.clients[server.get('name')] = {
                            'name': server.get('name'),
                            'address': server.get('address'),
                            'port': server.get('port'),
                            'protocol': protocol
                        }

            if len(hosts) > 0:
                log.warning('unable to find some plex hosts: %s', ', '.join(hosts))

            log.info('found hosts: %s', ', '.join(self.clients.keys()))

            self.clients_updated = datetime.now()


    def addToLibrary(self, message=None, group={}):
        if self.isDisabled(): return

        log.info('Sending notification to Plex')

        source_type = ['movie']
        base_url = 'http://%s:32400/library/sections' % self.conf('media_server')
        refresh_url = '%s/%%s/refresh' % base_url

        try:
            sections_xml = self.urlopen(base_url)
            xml_sections = minidom.parseString(sections_xml)
            sections = xml_sections.getElementsByTagName('Directory')

            for s in sections:
                if s.getAttribute('type') in source_type:
                    url = refresh_url % s.getAttribute('key')
                    x = self.urlopen(url)

        except:
            log.error('Plex library update failed for %s, Media Server not running: %s',
                      (self.conf('media_server'), traceback.format_exc(1)))
            return False

        return True

    def send_http(self, command, client):
        url = 'http://%s:%s/xbmcCmds/xbmcHttp/?%s' % (
            client['address'],
            client['port'],
            tryUrlencode(command)
        )

        headers = {}

        try:
            self.urlopen(url, headers=headers, timeout=3, show_error=False)
        except Exception, err:
            log.error("Couldn't sent command to Plex: %s", err)
            return False

        return True

    def notify_http(self, message='', data={}, listener=None):
        total = 0
        successful = 0

        data = {
            'command': 'ExecBuiltIn',
            'parameter': 'Notification(CouchPotato, %s)' % message
        }

        for name, client in self.clients.items():
            if client['protocol'] == 'xbmchttp':
                total += 1
                if self.send_http(data, client):
                    successful += 1

        return successful == total

    def send_json(self, method, params, client):
        log.debug('send_json("%s", %s, %s)', (method, params, client))
        url = 'http://%s:%s/jsonrpc' % (
            client['address'],
            client['port']
        )

        headers = {
            'Content-Type': 'application/json'
        }

        request = {
            'id':1,
            'jsonrpc': '2.0',
            'method': method,
            'params': params
        }

        try:
            requests.post(url, headers=headers, timeout=3, data=json.dumps(request))
        except Exception, err:
            log.error("Couldn't sent command to Plex: %s", err)
            return False

        return True

    def notify_json(self, message='', data={}, listener=None):
        total = 0
        successful = 0

        params = {
            'title': 'CouchPotato',
            'message': message
        }

        for name, client in self.clients.items():
            if client['protocol'] == 'xbmcjson':
                total += 1
                if self.send_json('GUI.ShowNotification', params, client):
                    successful += 1

        return successful == total

    def notify(self, message='', data={}, listener=None, force=False):
        self.updateClients(force)

        http_result = self.notify_http(message, data, listener)
        json_result = self.notify_json(message, data, listener)

        return http_result and json_result

    def test(self, **kwargs):

        test_type = self.testNotifyName()

        log.info('Sending test to %s', test_type)

        success = self.notify(
            message=self.test_message,
            data={},
            listener='test',
            force=True
        )
        success2 = self.addToLibrary()

        return {
            'success': success or success2
        }