# Copyright © 2022 Aravinth Manivannan <realaravinth@batsense.net>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
from django.shortcuts import render, redirect
from django.contrib.auth import authenticate, login, logout
from django.contrib.auth import get_user_model
from django.contrib.auth.decorators import login_required
from django.http import HttpResponse
from django.views.decorators.csrf import csrf_protect
from django.urls import reverse


@csrf_protect
def login_view(request):
    if request.method == "GET":
        ctx = {}
        if "next" in request.GET:
            ctx["next"] = request.GET["next"]
        return render(request, "accounts/auth/login.html", ctx)

    login_cred = request.POST["login"]
    user = None

    if "@" in login_cred:
        user = authenticate(
            email=login_cred,
            password=request.POST["password"],
        )
    else:
        user = authenticate(
            username=login_cred,
            password=request.POST["password"],
        )

    if user is not None:
        login(request, user)
        if "next" in request.POST:
            next_url = request.POST["next"]
            if next_url:
                return redirect(next_url)
        return redirect(reverse("accounts.protected"))

    ctx = {
        "error": {
            "title": "Login Failed",
            "reason": "Username or passwrod is incorrect, please try again.",
        }
    }
    return render(request, "accounts/auth/login.html", status=401, context=ctx)


@login_required
def protected_view(request):
    return render(request, "accounts/protected.html")


@login_required
def logout_view(request):
    logout(request)
    return redirect(reverse("accounts.login"))


def public_view(request):
    return render(request, "accounts/public.html")