# Create your views here.

from django.shortcuts import render, redirect
from django.contrib.auth import authenticate, login, logout

from django.http import HttpResponse

from django.utils import simplejson
from django.contrib.auth.decorators import login_required


from eventplanner.models import Event, EventParticipation
from musicians.models import Musician

from datetime import datetime
from datetime import timedelta
from django.contrib.auth.models import User


@login_required
def home_view(request):
    context = dict()

    # Event participation for slider text
    if EventParticipation.isMember( request.user ):
        context['hasParticipationSetForAllEvents'] = EventParticipation.hasUserSetParticipationForAllEvents( request.user)

    # Countdown
    countdown = dict()
    events = Event.objects.filter( date__gte = datetime.now() ).order_by('date')[:3]
        
    if ( len(events) > 0 ):
        i = 0
        nextEvent = events[0]

        while nextEvent.displaydatetime < datetime.now():
            if len(events ) <= i:
                return
            else:
                i += 1
                nextEvent = events[i]
        
        if EventParticipation.isMember( request.user ):
            part = EventParticipation.objects.filter( user = request.user ).filter( event = nextEvent )
            countdown['participation'] = part[0].status

        eventTime = nextEvent.displaydatetime

        countdown['event'] = nextEvent
        countdown['epoch'] = int(  (eventTime - datetime.now() ).total_seconds() * 1000 )
        
        context['countdown'] = countdown
    
    
    # Route to concert
    nextConcerts = Event.objects.filter( date__gte = datetime.now(), type = 'Conc' ).order_by('date')[:1] 
    if len( nextConcerts) > 0 : 
        nextConcert = nextConcerts[0]
        
        routeInfo = dict()
        
        musician = Musician.objects.get( user = request.user );
        routeInfo['origin'] = musician.street + ", " + str( musician.zip_code ) + " " + musician.city
        
        if nextConcert.map_location:
            # map_location has format "lat,longitute,zoomlevel"
            routeInfo['destination'] = ",".join( nextConcert.map_location.split(",")[:2] )
        else:
            routeInfo['destination'] = nextConcert.location
    
        context['routeInfo'] = routeInfo
        context['nextConcert'] = nextConcert
        context['hasNextConcertInfo'] = True
    else:
        context['hasNextConcertInfo'] = False
        
        
    return render( request, 'website/mainpage.html', context )


def logout_view(request):
    logout( request )
    return redirect( login_view )


def userlistForAutocompletion(request):
    result = [ u.username for u in User.objects.all() ]
    return HttpResponse( simplejson.dumps(result), mimetype='application/json' )


def login_view( request ):
    if request.method == 'POST': # If the form has been submitted...
        raiseFirstLetter = lambda s: s[:1].upper() + s[1:] if s else ''
        username = raiseFirstLetter( request.POST['username'] )
        password = request.POST['password']
        user = authenticate( username=username, password=password )
        result = dict()
        result['err'] = ""
        if user is not None:
            if user.is_active:
                if not request.POST.get('remember', None):
                    # Expire in one year
                    request.session.set_expiry( timedelta( weeks=52 ) )
                else:
                    # Expire on browser close
                    request.session.set_expiry( 0 )
                    
                login(request, user)
                result['redirect'] = "/"
                print ( "Setting Redirect" )
                if 'next' in request.POST :
                    result['redirect'] = request.POST["next"]
                    print ( "Using " + request.POST["next"] )
            else:
                result['err'] = "Dein Account wurde deaktiviert."
                # Return a 'disabled account' error message
        else:
            result['err'] = "Falscher Benutzername oder falsches Kennwort."
            
        return HttpResponse( simplejson.dumps(result), mimetype='application/json' )
    
    else:
        # Check if user already logged in
        if request.user.is_authenticated():
            return redirect( "/")
            
        if 'next' in request.GET:
            nextPage = request.GET['next']
        else:
            nextPage = "/"
        return render( request, 'website/login.html', { 'next' : nextPage } )



import  django.contrib.auth.views 
from django.core.urlresolvers import reverse

def change_password( request ):
    template_name = "website/change_password.html"
    return django.contrib.auth.views.password_change(request, template_name, post_change_redirect= "/" )