path: root/workshop_app/views.py

from .forms import (
					UserRegistrationForm, UserLoginForm, 
					ProfileForm, CreateWorkshop
					)
from .models import Profile, User, has_profile, Workshop, Course
from django.template import RequestContext
from datetime import datetime, date
from django.contrib.auth import login, logout, authenticate
from django.contrib.auth.decorators import login_required
from django.contrib import messages
from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger
from django.core.mail import send_mail
from django.shortcuts import render, redirect
from django.db import IntegrityError
from collections import OrderedDict
from dateutil.parser import parse
from workshop_portal.settings import (
                    EMAIL_HOST, 
                    EMAIL_PORT, 
                    EMAIL_HOST_USER, 
                    EMAIL_HOST_PASSWORD,
                    EMAIL_USE_TLS
                    )

def index(request):
	'''Landing Page'''

	user = request.user
	if user.is_authenticated():
		if user.groups.filter(name='instructor').count() > 0:
			return redirect('/manage/')
		return redirect('/book/')

	return render(request, "workshop_app/index.html")

def is_instructor(user):
	'''Check if the user is having instructor rights'''
	if user.groups.filter(name='instructor').exists():
		return True

def user_login(request):
	'''Login'''
	user = request.user
	if user.is_authenticated():
		if user.groups.filter(name='instructor').count() > 0:
			return redirect('/manage/')
		return redirect('/book/')

	if request.method == "POST":
		form = UserLoginForm(request.POST)
		if form.is_valid():
			user = form.cleaned_data
			login(request, user)
			if user.groups.filter(name='instructor').count() > 0:
				return redirect('/manage/')
			return redirect('/book/')
		else:
			return render(request, 'workshop_app/login.html', {"form": form})
	else:
		form = UserLoginForm()
		return render(request, 'workshop_app/login.html', {"form": form})

def user_logout(request):
	'''Logout'''
	logout(request)
	return render(request, 'workshop_app/logout.html')

def user_register(request):
	'''User Registeration form'''
	if request.method == 'POST':
		form = UserRegistrationForm(request.POST)
		if form.is_valid():
			try:
				data = form.cleaned_data
				username, password = form.save()
				new_user = authenticate(username=username, password=password)
				login(request, new_user)
				user_position = request.user.profile.position
				send_email(
						   request, call_on='Registration', 
						   user_position=user_position
						  )
				return redirect('/view_profile/')
			except IntegrityError as e:
				return render(
							request, 
							"workshop_app/registeration_error.html"
							)
		else:
			return render(
						request, "workshop_app/register.html", 
						{"form": form}
						)
	else:
		form = UserRegistrationForm()
	return render(request, "workshop_app/register.html", {"form": form})


def book(request):
	user = request.user
	if user.is_authenticated():
		if user.groups.filter(name='instructor').count() > 0:
			return redirect('/manage/')
		workshop_details = Workshop.objects.all()
		workshop_occurence = {}
		for workshops in workshop_details:
			dates = workshops.recurrences.between(
				datetime(2017, 3, 12, 0, 0, 0),
	    		datetime(2017, 12, 31, 0, 0, 0), #Needs to be changed 
	    		inc=True
				)

			for d in range(len(dates)):
				workshop_occurence[dates[d].strftime("%d-%m-%Y")] = [
										workshops.workshop_instructor,
				 						workshops.workshop_title
				 						]
		
		# workshop_occurence = OrderedDict(sorted(workshop_occurence.items()))
		workshop_occurence = list(workshop_occurence.items())


		

		#Show upto 3 Workshops per page
		paginator = Paginator(workshop_occurence, 6) 
		page = request.GET.get('page')
		try:
			workshop_occurences  = paginator.page(page)
		except PageNotAnInteger:
		#If page is not an integer, deliver first page.
			workshop_occurences  = paginator.page(1)
		except EmptyPage:
			#If page is out of range(e.g 999999), deliver last page.
			workshop_occurences  = paginator.page(paginator.num_pages)

		return render(
					request, "workshop_app/booking.html",
					{"workshop_details": workshop_occurences}
					 )
					
	else:
		return redirect('/login/')

@login_required
def manage(request):
	user = request.user
	if user.is_authenticated():
		#Move user to the group via admin
		if user.groups.filter(name='instructor').count() > 0:
			try:
				workshop_details = Workshop.objects.get(workshop_instructor=user)
				workshop_occurence_list = workshop_details.recurrences.between(
					datetime(2017, 3, 12, 0, 0, 0),
	    			datetime(2017, 12, 31, 0, 0, 0),
	    			inc=True													
	    			)
				for i in range(len(workshop_occurence_list)):
					workshop_occurence_list[i] = [{ 
										"user": str(user), 
										"workshop": workshop_details, 
										"date": workshop_occurence_list[i].date
												 }]
				

				#Show upto 3 Workshops per page
				paginator = Paginator(workshop_occurence_list, 3) 
				page = request.GET.get('page')
				try:
					workshops  = paginator.page(page)
				except PageNotAnInteger:
					#If page is not an integer, deliver first page.
					workshops  = paginator.page(1)
				except EmptyPage:
					#If page is out of range(e.g 999999), deliver last page.
					workshops  = paginator.page(paginator.num_pages)

			except:
				workshops = None
			return render(
						request, "workshop_app/manage.html", 
						{"workshop_occurence_list": workshops}
						)

		return redirect('/book/')
	else:
		return redirect('/login/')

@login_required
def view_profile(request):
	""" view instructor and coordinator profile """
	return render(request, "workshop_app/view_profile.html")

@login_required
def edit_profile(request):
	""" edit profile details facility for instructor and coordinator """

	user = request.user
	if is_instructor(user):
		template = 'workshop_app/manage.html'
	else:
		template = 'workshop_app/booking.html'
	context = {'template': template}
	if has_profile(user):
		profile = Profile.objects.get(user_id=user.id)
	else:
		profile = None

	if request.method == 'POST':
		form = ProfileForm(request.POST, user=user, instance=profile)
		if form.is_valid():
			form_data = form.save(commit=False)
			form_data.user = user
			form_data.user.first_name = request.POST['first_name']
			form_data.user.last_name = request.POST['last_name']
			form_data.user.save()
			form_data.save()

			return render(
						request, 'workshop_app/profile_updated.html', 
						context
						)
		else:
			context['form'] = form
			return render(request, 'workshop_app/edit_profile.html', context)
	else:
		form = ProfileForm(user=user, instance=profile)
		context['form'] = form
		return render(request, 'workshop_app/edit_profile.html', context)

@login_required
def create_workshop(request):
	'''Instructor creates workshops'''

	user = request.user
	

	if is_instructor(user):
		if request.method == 'POST':
			form = CreateWorkshop(request.POST)
			if form.is_valid():
				form_data = form.save(commit=False)
				#form_data.profile_id = profile.id
				form_data.workshop_instructor = user
				form_data.workshop_instructor.save()
				form_data.save()
				return redirect('/manage/')
		else:
			form = CreateWorkshop()
		return render(
					 request, 'workshop_app/create_workshop.html',
					 {"form": form }
					 )
	else:
		return redirect('/book/')

@login_required
def view_course_list(request):
	'''Gives the course details '''
	user = request.user
	if is_instructor(user):
		course_list = Course.objects.all()
		paginator = Paginator(course_list, 9) #Show upto 12 Courses per page

		page = request.GET.get('page')
		try:
			courses = paginator.page(page)
		except PageNotAnInteger:
			#If page is not an integer, deliver first page.
			courses = paginator.page(1)
		except EmptyPage:
			#If page is out of range(e.g 999999), deliver last page.
			courses = paginator.page(paginator.num_pages)

		return render(
					request, 'workshop_app/view_course_list.html', \
					{'courses': courses}
					)

	else:
		return redirect('/book/')

@login_required
def view_course_details(request):
	'''Gives the course details '''

	user = request.user
	if is_instructor(user):

		return redirect('/')
		
	else:
		return redirect('/book/')

def send_email(request, call_on, user_position=None):
	'''
	Email sending function while registration and 
	booking confirmation.
	'''

	if call_on == 'Registration':
		if user_position == 'instructor':
			message = 'Thank You for Registering on this platform. \n \
						Since you have ask for Instructor Profile, \n \
						we will get back to you soon after verifying your \n \
						profile. \
						In case if you don\'t get any response within 3days, \
						Please contact us at   '
			send_mail(
					'Welcome to FOSSEE', message, EMAIL_HOST_USER, 
					[request.user.email], fail_silently=False
					)
			#Send a mail to admin as well as a notification.
		else:
			message = 'Thank You for Registering on this platform.\n \
						Rules. \n \
					If you face any issue during your session please contact \
					fossee.'
			send_mail(
					'Welcome to FOSSEE', message, EMAIL_HOST_USER, 
					[request.user.email], fail_silently=False
					)

	elif call_on == 'Booking':
		pass