from django.shortcuts import redirect, render
from django.http import HttpResponse
from .models import Tutorial
from django.contrib.auth.forms import AuthenticationForm
from django.contrib.auth import login, logout, authenticate
from django.contrib import messages
from .forms import NewUserForm


# Create your views here.

def homepage(request):
    return render(request=request, template_name='main/home.html',
                  context={"tutorials":Tutorial.objects.all})

def register(request):
    if request.method == "POST":
        form = NewUserForm(request.POST)
        if form.is_valid():
            user = form.save()
            username = form.cleaned_data.get('username')
            messages.success(request, f"New account has successfully created: {username}")
            login(request, user)
            messages.info(request, f"You are now logged in as {username}")
            return redirect("main:homepage")
        else:
            for msg in form.error_messages:
                messages.error(request, f"{msg}: form.error_messages[msg]")

            return render(request=request, template_name='main/register.html',
                  context={"form":form})

    form=NewUserForm
    return render(request=request, template_name='main/register.html',
                  context={"form":form})

def logout_request(request):
    logout(request)
    messages.info(request, "Logged out successfully !!!")
    return redirect("main:homepage")

def login_request(request):
    if request.method == "POST":
        form = AuthenticationForm(request, data=request.POST)
        if form.is_valid():
            username = form.cleaned_data.get('username')
            password = form.cleaned_data.get('password')
            user = authenticate(username=username, password=password)

            if user is not None:
                login(request, user)
                messages.info(request, f"You are now logged in as {username}")
                return redirect('/')
            else:
                messages.error(request, "Invalid username or password ")

        else:
            messages.error(request, "Invalid username or password ")

    form = AuthenticationForm
    return render(request=request, template_name='main/login.html',
                  context={"form":form})