from django.contrib.auth import login as login_user, authenticate
from django.contrib.auth import logout as logout_user
from django.contrib.auth import get_user_model
from django.db import IntegrityError
from django.shortcuts import redirect, render, reverse
from django.utils.text import gettext_lazy as _
from django.views.generic import TemplateView, View

from shop.models import CustomerAddress
from users.forms import LoginForm, RegisterForm
from web.models import WebSettings


User = get_user_model()


class RedirectionMixin:
    redirect_to = ""

    def get_redirection(self):
        return reverse(self.redirect_to)


class LoginView(View, RedirectionMixin):
    template_name = "users/login.html"
    redirect_to = "web:index"
    login_form_class = LoginForm

    def get_login_form(self, request):
        return self.login_form_class(data=request.POST)

    def get(self, request, *args, **kwargs):
        if request.user.is_authenticated:
            return redirect(self.get_redirection())

        settings = WebSettings.load()
        login_form = self.login_form_class()

        return render(
            request,
            self.template_name,
            {
                "form": login_form,
                "title": settings.web_title,
                "description": _("inicio de sesión"),
            },
        )

    def post(self, request, *args, **kwargs):
        login_form = self.get_login_form(request)

        if login_form.is_valid():
            login_user(request, login_form.get_user())

            if not login_form.cleaned_data.get("remember_me"):
                request.session.set_expiry(0)

            return redirect(self.get_redirection())

        return render(request, self.template_name, {"form": login_form}, status=400)


class RegisterView(TemplateView, RedirectionMixin):
    template_name = "users/register.html"
    redirect_to = "web:index"
    form_class = RegisterForm

    def get_context_data(self, **kwargs):
        settings = WebSettings.load()

        return {
            "form": self.form_class(),
            "title": settings.web_title,
            "description": _("crear cuenta"),
        }

    def post(self, request, *args, **kwargs):
        settings = WebSettings.load()
        form = self.form_class(request.POST)
        errors = []

        try:
            if form.is_valid():
                user = form.save()

                user.username = user.email
                user.first_name = form.cleaned_data.get("first_name")
                user.last_name = form.cleaned_data.get("last_name")
                user.save()

                login(request, user)
                return redirect(self.get_redirection())
            else:
                errors = form.errors
        except IntegrityError as e:
            errors = [
                _("Ya existe un usuario con ese correo electrónico"),
            ]

        return render(
            request,
            self.template_name,
            {
                "form": form,
                "title": settings.web_title,
                "description": _("Crear cuenta"),
                "errors": errors,
            },
            status=400,
        )


class LogoutView(View, RedirectionMixin):
    redirect_to = "web:index"

    def get(self, request, *args, **kwargs):
        logout_user(request)
        return redirect(self.get_redirection())

    def post(self, request, *args, **kwargs):
        logout_user(request)
        return redirect(self.get_redirection())


class ResetPasswordView(TemplateView):
    template_name = "web/reset-password.html"


class MyAccountView(TemplateView):
    template_name = "users/user_details.html"

    def get_context_data(self, **kwargs):
        addresses = CustomerAddress.objects.filter(user=self.request.user)
        settings = WebSettings.load()
        return {
            "web_title": settings.web_title,
            "customer_addresses": addresses,
        }


login = LoginView.as_view()
logout = LogoutView.as_view()
register = RegisterView.as_view()
reset_password = ResetPasswordView.as_view()

my_account = MyAccountView.as_view()