from http import HTTPStatus

from django.contrib.auth.models import Group
from django.contrib.auth.models import User
from django.test import Client
from django.test import TestCase
from django.urls import reverse
from django.utils import timezone
from django.utils.translation import gettext as _
from members.models import DIVERSE
from members.models import Member

from ..models import RegistrationPassword


class RegistrationPasswordTestCase(TestCase):
    def test_str_method(self):
        """Test RegistrationPassword __str__ method returns password"""
        reg_password = RegistrationPassword.objects.create(password="test123")
        self.assertEqual(str(reg_password), "test123")


class RegisterViewTestCase(TestCase):
    def setUp(self):
        self.client = Client()

        # Create a test member with invite key
        self.member = Member.objects.create(
            prename="Test",
            lastname="User",
            birth_date=timezone.now().date(),
            email="test@example.com",
            gender=DIVERSE,
            invite_as_user_key="test_key_123",
        )

        # Create a registration password
        self.registration_password = RegistrationPassword.objects.create(password="test_password")

        # Get or create Standard group for user setup
        self.standard_group, created = Group.objects.get_or_create(name="Standard")

    def test_register_get_without_key_redirects(self):
        """Test GET request without key redirects to startpage."""
        url = reverse("logindata:register")
        response = self.client.get(url)
        self.assertEqual(response.status_code, HTTPStatus.FOUND)

    def test_register_post_without_key_redirects(self):
        """Test POST request without key redirects to startpage."""
        url = reverse("logindata:register")
        response = self.client.post(url)
        self.assertEqual(response.status_code, HTTPStatus.FOUND)

    def test_register_get_with_empty_key_shows_failed(self):
        """Test GET request with empty key shows registration failed page."""
        url = reverse("logindata:register")
        response = self.client.get(url, {"key": ""})
        self.assertEqual(response.status_code, HTTPStatus.OK)
        self.assertContains(
            response, _("Something went wrong. The registration key is invalid or has expired.")
        )

    def test_register_get_with_invalid_key_shows_failed(self):
        """Test GET request with invalid key shows registration failed page."""
        url = reverse("logindata:register")
        response = self.client.get(url, {"key": "invalid_key"})
        self.assertEqual(response.status_code, HTTPStatus.OK)
        self.assertContains(
            response, _("Something went wrong. The registration key is invalid or has expired.")
        )

    def test_register_get_with_valid_key_shows_password_form(self):
        """Test GET request with valid key shows password entry form."""
        url = reverse("logindata:register")
        response = self.client.get(url, {"key": self.member.invite_as_user_key})
        self.assertEqual(response.status_code, HTTPStatus.OK)
        self.assertContains(response, _("Set login data"))
        self.assertContains(response, _("Welcome, "))
        self.assertContains(response, self.member.prename)

    def test_register_post_without_password_shows_failed(self):
        """Test POST request without password shows registration failed page."""
        url = reverse("logindata:register")
        response = self.client.post(url, {"key": self.member.invite_as_user_key})
        self.assertEqual(response.status_code, HTTPStatus.OK)
        self.assertContains(
            response, _("Something went wrong. The registration key is invalid or has expired.")
        )

    def test_register_post_with_wrong_password_shows_error(self):
        """Test POST request with wrong password shows error message."""
        url = reverse("logindata:register")
        response = self.client.post(
            url, {"key": self.member.invite_as_user_key, "password": "wrong_password"}
        )
        self.assertEqual(response.status_code, HTTPStatus.OK)
        self.assertContains(response, _("You entered a wrong password."))

    def test_register_post_with_correct_password_shows_form(self):
        """Test POST request with correct password shows user creation form."""
        url = reverse("logindata:register")
        response = self.client.post(
            url,
            {
                "key": self.member.invite_as_user_key,
                "password": self.registration_password.password,
            },
        )
        self.assertEqual(response.status_code, HTTPStatus.OK)
        self.assertContains(response, _("Set login data"))
        self.assertContains(response, self.member.suggested_username())

    def test_register_post_with_save_and_invalid_form_shows_errors(self):
        """Test POST request with save but invalid form shows form errors."""
        url = reverse("logindata:register")
        response = self.client.post(
            url,
            {
                "key": self.member.invite_as_user_key,
                "password": self.registration_password.password,
                "save": "true",
                "username": "",  # Invalid - empty username
                "password1": "testpass123",
                "password2": "different_pass",  # Invalid - passwords don't match
            },
        )
        self.assertEqual(response.status_code, HTTPStatus.OK)
        self.assertContains(response, _("Set login data"))

    def test_register_post_with_save_and_valid_form_shows_success(self):
        """Test POST request with save and valid form shows success page."""
        url = reverse("logindata:register")
        response = self.client.post(
            url,
            {
                "key": self.member.invite_as_user_key,
                "password": self.registration_password.password,
                "save": "true",
                "username": "testuser",
                "password1": "testpass123",
                "password2": "testpass123",
            },
        )
        self.assertEqual(response.status_code, HTTPStatus.OK)
        self.assertContains(
            response, _("You successfully set your login data. You can now proceed to")
        )

        # Verify user was created and associated with member
        user = User.objects.get(username="testuser")
        self.assertEqual(user.is_staff, True)
        self.member.refresh_from_db()
        self.assertEqual(self.member.user, user)
        self.assertEqual(self.member.invite_as_user_key, "")

    def test_register_post_with_save_and_no_standard_group_shows_failed(self):
        """Test POST request with save but no Standard group shows failed page."""
        # Delete the Standard group
        self.standard_group.delete()

        url = reverse("logindata:register")
        response = self.client.post(
            url,
            {
                "key": self.member.invite_as_user_key,
                "password": self.registration_password.password,
                "save": "true",
                "username": "testuser",
                "password1": "testpass123",
                "password2": "testpass123",
            },
        )
        self.assertEqual(response.status_code, HTTPStatus.OK)
        self.assertContains(
            response, _("Something went wrong. The registration key is invalid or has expired.")
        )