# Create your tests here.

# 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/>.
import time

from django.contrib.auth import get_user_model
from django.urls import reverse
from django.test import TestCase, Client, override_settings
from django.contrib.auth import authenticate
from django.conf import settings

from .models import AccountConfirmChallenge
from .management.commands.rm_unverified_users import (
    Command as CleanUnverifiedUsersCommand,
)


class LoginTest(TestCase):
    """
    Tests create new app view
    """

    def setUp(self):
        self.password = "password121231"
        self.username = "create_new_app_tests"
        self.email = f"{self.username}@example.org"
        self.user = get_user_model().objects.create(
            username=self.username,
            email=self.email,
        )
        self.user.set_password(self.password)
        self.user.save()

    def test_login_template_works(self):
        """
        Tests if login template renders
        """
        resp = self.client.get(reverse("accounts.login"))
        self.assertEqual(b"Free Forge Ecosystem" in resp.content, True)

    def test_login_works(self):
        """
        Tests if login template renders
        """
        c = Client()

        #  username login works
        payload = {
            "login": self.username,
            "password": self.password,
        }
        resp = c.post(reverse("accounts.login"), payload)
        self.assertEqual(resp.status_code, 302)
        self.assertEqual(resp.headers["location"], reverse("accounts.home"))

        #  email login works
        paylaod = {
            "login": self.email,
            "password": self.password,
        }
        resp = c.post(reverse("accounts.login"), payload)
        self.assertEqual(resp.status_code, 302)
        self.assertEqual(resp.headers["location"], reverse("accounts.home"))

        #  authentication failure when wrong credentials are provided
        payload = {
            "login": self.email,
            "password": self.user.email,
        }

        resp = self.client.post(reverse("accounts.login"), paylaod)
        self.assertEqual(resp.status_code, 401)
        self.assertEqual(b"Login Failed" in resp.content, True)


class RegistrationTest(TestCase):
    def test_register_template_works(self):
        """
        Tests if register template renders
        """
        resp = self.client.get(reverse("accounts.register"))
        self.assertEqual(b"Free Forge Ecosystem" in resp.content, True)

    def test_register_works(self):
        """
        Tests if register works
        """
        c = Client()

        # passwords don't match
        msg = {
            "username": "register_user",
            "password": "password",
            "email": "register_user@example.com",
            "confirm_password": "foo@example.com",
        }
        resp = c.post(reverse("accounts.register"), msg)
        self.assertEqual(resp.status_code, 400)

        # register user
        msg["confirm_password"] = msg["password"]
        resp = c.post(reverse("accounts.register"), msg)
        self.assertEqual(resp.status_code, 302)

        user = get_user_model().objects.get(username=msg["username"])
        self.assertEqual(user.is_active, False)
        challenge = AccountConfirmChallenge.objects.get(owned_by=user)

        pending_url = challenge.pending_url()
        self.assertEqual(resp.headers["location"], pending_url)

        resp = c.post(reverse("accounts.verify.resend", args=(challenge.public_ref,)))
        self.assertEqual(resp.status_code, 302)
        self.assertEqual(resp.headers["location"], pending_url)

        resp = c.post(challenge.verification_link())
        self.assertEqual(resp.status_code, 302)
        self.assertEqual(resp.headers["location"], reverse("accounts.login"))
        user.refresh_from_db()
        self.assertEqual(user.is_active, True)

        old_email = msg["email"]

        # duplicate username
        msg["email"] = "new_register_user_email@example.com"
        resp = c.post(reverse("accounts.register"), msg)
        self.assertEqual(resp.status_code, 400)
        self.assertEqual(b"Username is already registered" in resp.content, True)

        # duplicate email
        msg["username"] = "new_register_user_email"
        msg["email"] = old_email
        resp = c.post(reverse("accounts.register"), msg)
        self.assertEqual(resp.status_code, 400)
        self.assertEqual(b"Email is already registered" in resp.content, True)


class UnverifiedAccountCleanupTets(TestCase):
    """
    Tests account clean up management command
    """

    @override_settings(HOSTEA={"ACCOUNTS": {"MAX_VERIFICATION_TOLERANCE_PERIOD": 0}})
    def test_register_works(self):
        """
        Tests if register works
        """
        c = Client()

        username1 = "cleanup_user1"
        username2 = "cleanup_user2"

        # passwords don't match
        msg = {
            "username": username1,
            "password": "password",
            "email": f"{username1}@example.com",
            "confirm_password": "password",
        }

        # register user
        resp = c.post(reverse("accounts.register"), msg)
        self.assertEqual(resp.status_code, 302)

        msg["username"] = username2
        msg["email"] = f"{username2}@example.org"
        resp = c.post(reverse("accounts.register"), msg)
        self.assertEqual(resp.status_code, 302)

        user1 = get_user_model().objects.get(username=username1)
        user1.is_active = True
        user1.save()

        if settings.HOSTEA["ACCOUNTS"]["MAX_VERIFICATION_TOLERANCE_PERIOD"] > 10:
            raise Exception(
                "This test requires MAX_VERIFICATION_TOLERANCE_PERIOD to be less, ideally less  10"
            )

        time.sleep(settings.HOSTEA["ACCOUNTS"]["MAX_VERIFICATION_TOLERANCE_PERIOD"] + 2)
        cmd = CleanUnverifiedUsersCommand()
        cmd.handle()

        self.assertEqual(
            get_user_model().objects.filter(username=username1).exists(), True
        )
        self.assertEqual(
            get_user_model().objects.filter(username=username2).exists(), False
        )