# Create your views here.
from django.http import HttpResponseRedirect,Http404,HttpResponse
from django.shortcuts import render_to_response
from oasisreg.registration.forms import EventForm
from oasisreg.registration.forms import ParticipantForm,FacultyForm
from django.contrib.auth.decorators import login_required
from django.contrib.auth.models import User
from django.contrib import auth
from oasisreg.registration.models import Participant,Faculty,Event
from django.forms.models import modelformset_factory
from django.core.exceptions import ObjectDoesNotExist
from django.core.urlresolvers import reverse
import xlwt
import xlrd

def create_formfield(f, **kwargs):
    return f.formfield(**kwargs)

@login_required
def add(request):
    target = reverse('add-p')
    if request.method == 'POST':
        i = request.session.get('id')
        u = User.objects.get(pk = int(i) )
        u = u.get_profile()
        coll = u.college
        p = Participant(college = coll)
        ParticipantFormset = modelformset_factory(Participant,
                                     form = ParticipantForm,
                                     formfield_callback=create_formfield,
                                     extra = 1)

        if 'submit_add' in request.POST and request.POST['extra']!='' :
            formset = ParticipantFormset(request.POST)
            flag = 0

            if formset.is_valid():

                forms = formset.save(commit = False)
                for form in forms:
                    form.college = coll
                    flag = 1
                    form.save()
                formset.save_m2m()

                try:
                    ext  = int(request.POST['extra'])
                    if ext > 12:
                        ext = 12
                    elif ext < 0:
                        ext = 1

                except ValueError:
                    if not flag:
                        message = u'Please enter a number in "No. of forms to add " field '
                    else:
                        message = u'Participants were added but,you did not enter a  number in "No. of forms to add " field '
                    return render_to_response('thank.html',{ 'message': message})

                ParticipantFormset = modelformset_factory(Participant,
                                     form = ParticipantForm,
                                     formfield_callback=create_formfield,
                                     extra = ext)

                formset = ParticipantFormset(queryset = Participant.objects.none())

                return render_to_response('add_participant.html',{'formFormset' : formset , 'action' : target})

            else:

                return render_to_response('add_participant.html',{'formFormset' : formset, 'action' : target})


        else:

            formset = ParticipantFormset(request.POST)

            if formset.is_valid():
                forms = formset.save(commit = False)
                if forms:
                    for form in forms:
                        form.college = coll
                        form.save()
                    formset.save_m2m()
                    return HttpResponseRedirect(reverse('manage'))
                else:
                    ParticipantFormset = modelformset_factory(Participant,
                                     form = ParticipantForm,
                                     formfield_callback=create_formfield,
                                     extra = 1)
                    formset = ParticipantFormset(queryset = Participant.objects.none())
                    message = " You submitted empty forms!"
                    return render_to_response('add_participant.html',{'formFormset' : formset , 'action' : target , 'emessage':message})

            else:

                return render_to_response('add_participant.html',{'formFormset' : formset, 'action' : target})


    else :

        ParticipantFormset = modelformset_factory(Participant,
                                     form = ParticipantForm,
                                     formfield_callback=create_formfield,
                                     extra = 1)
        formset = ParticipantFormset(queryset = Participant.objects.none())

        return render_to_response('add_participant.html',{'formFormset' : formset})

@login_required
def addfaculty(request):
    target = reverse('add-f')
    if request.method == 'POST':
        i = request.session.get('id')
        u = User.objects.get(id = i )
        u = u.get_profile()
        coll = u.college
        p = Faculty(college = coll)
        form = FacultyForm(request.POST)
        if form.is_valid():
            form = FacultyForm(request.POST,instance = p)
            form.save()
            return HttpResponseRedirect(reverse('manage'))
        else:
            return render_to_response('addf.html',{'form' : form , 'action': target})
    else:
        form = FacultyForm()
        return render_to_response('addf.html',{'form' : form , 'action': target})

def login(request):
    if request.method == 'POST':
        username = request.POST.get('username')
        password = request.POST.get('password')
        user = auth.authenticate(username = username,password = password)
        if user is not None and user.is_active:
            auth.login(request,user)
            u = User.objects.get(username = username)
            request.session["id"] = u.id
            return HttpResponseRedirect(reverse('profile'))
        else:
            message = 'User Does not exist/Wrong username-password !!!'
            return render_to_response('login.html', {'message':message})
    else:
        if request.session.get('id'):
            return HttpResponseRedirect(reverse('profile'))
        return render_to_response('login.html')

@login_required
def displayParticipants(request):
    if not request.session.get('id'):
        return HttpResponseRedirect(reverse('login'))
    else:
        i = request.session.get('id')
        u = User.objects.get(id = i)
        u = u.get_profile()
        coll = u.college
        ps = Participant.objects.filter(college = coll)
        fs = Faculty.objects.filter(college = coll)
        return render_to_response('partcipants.html',{'participants':ps , 'faculty' : fs})

@login_required
def editp(request,i):
    try:
        p = Participant.objects.get(pk = int(i))
    except ObjectDoesNotExist:
        raise Http404

    id = request.session.get('id')
    u = User.objects.get(pk = int(id))
    u = u.get_profile()
    c =  u.college
    if not p and p.college != u.college:
        raise Http404
    else:
        request.session['pid'] = p.id
        prtcpnt = ParticipantForm(instance = p)
        target = reverse('edit')
        return render_to_response('edit_p.html',{'form':prtcpnt ,'action' : target})

@login_required
def edit(request):
    target = reverse('edit')
    if request.method == 'POST':
        i = request.session.get('pid')
        try:
            p = Participant.objects.get(id = int(i) )               # updated 07-10-2010 by samvit
        except ObjectDoesNotExist:
            raise Http404

        r = request.POST
        t = ParticipantForm(r,instance = p)
        if t.is_valid():
            t.save()
            del request.session['pid']
        else:
        return render_to_response('edit_p.html' ,{ 'form': t, 'action':target } )

        i = request.session.get('id')
        u = User.objects.get(pk = int(i))
        u = u.get_profile()
        coll = u.college
        ps = Participant.objects.filter(college = coll)
        fs = Faculty.objects.filter(college = coll)
        message = "Participant successfully edited!"
        return render_to_response('partcipants.html',{'participants':ps , 'faculty' : fs , 'message' : message})

@login_required
def delete(request, id):
    try:
        p = Participant.objects.get(pk = int(id))
    except ObjectDoesNotExist:
        raise Http404
    i = request.session.get('id')
    u = User.objects.get(pk = int(i))
    u = u.get_profile()
    c = u.college
    if p and p.college == c:
        p.delete()
    i = request.session.get('id')
        u = User