from django.contrib import messages
from django.contrib.auth import get_user_model, login as auth_login, logout as auth_logout
from django.contrib.auth.decorators import login_required
from django.contrib.auth.tokens import default_token_generator
from django.contrib.auth.views import (
    PasswordResetCompleteView,
    PasswordResetConfirmView,
    PasswordResetDoneView,
    PasswordResetView,
)
from django.shortcuts import redirect, render
from django.urls import reverse_lazy
from django.utils.encoding import force_str
from django.utils.http import urlsafe_base64_decode
from django.views.decorators.http import require_http_methods

from users.forms import LoginForm, ProfileForm, RegisterForm, SantehRayPasswordResetForm, SantehRaySetPasswordForm
from users.services import send_activation_email


User = get_user_model()


# Create your views here.
@require_http_methods(["GET", "POST"])
def login(request):
    if request.user.is_authenticated:
        return redirect("users:profile")

    form = LoginForm(request=request, data=request.POST or None)
    if request.method == "POST" and form.is_valid():
        auth_login(request, form.get_user())
        return redirect("users:profile")

    return render(request, "users/login.html", context={"form": form})


@require_http_methods(["GET", "POST"])
def register(request):
    if request.user.is_authenticated:
        return redirect("users:profile")

    form = RegisterForm(request.POST or None)
    if request.method == "POST" and form.is_valid():
        user = form.save()
        send_activation_email(request, user)
        return render(request, "users/register_done.html", context={"email": user.email})

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


@require_http_methods(["POST"])
def logout(request):
    auth_logout(request)
    return redirect("users:login")


def activate(request, uidb64, token):
    try:
        uid = force_str(urlsafe_base64_decode(uidb64))
        user = User.objects.get(pk=uid)
    except (TypeError, ValueError, OverflowError, User.DoesNotExist):
        user = None

    if user and default_token_generator.check_token(user, token):
        user.is_active = True
        user.save(update_fields=["is_active"])
        auth_login(request, user)
        return render(request, "users/activation_success.html", context={"user": user})

    return render(request, "users/activation_invalid.html", status=400)


@login_required
@require_http_methods(["GET", "POST"])
def profile(request):
    form = ProfileForm(request.POST or None, instance=request.user)
    if request.method == "POST" and form.is_valid():
        form.save()
        messages.success(request, "Данные профиля обновлены.")
        return redirect("users:profile")

    return render(request, "users/profile.html", context={"form": form})


class SantehRayPasswordResetView(PasswordResetView):
    form_class = SantehRayPasswordResetForm
    template_name = "users/password_reset.html"
    email_template_name = "users/emails/password_reset_email.txt"
    html_email_template_name = "users/emails/password_reset_email.html"
    subject_template_name = "users/emails/password_reset_subject.txt"
    success_url = reverse_lazy("users:password_reset_done")


class SantehRayPasswordResetDoneView(PasswordResetDoneView):
    template_name = "users/password_reset_done.html"


class SantehRayPasswordResetConfirmView(PasswordResetConfirmView):
    template_name = "users/password_reset_confirm.html"
    success_url = reverse_lazy("users:password_reset_complete")
    form_class = SantehRaySetPasswordForm


class SantehRayPasswordResetCompleteView(PasswordResetCompleteView):
    template_name = "users/password_reset_complete.html"