from django.contrib.auth import get_user_model
from django.core import mail
from django.test import TestCase

from misago.users.models import Ban
from misago.users.tokens import make_password_change_token


UserModel = get_user_model()


class GatewayTests(TestCase):
    def test_api_invalid_credentials(self):
        """login api returns 400 on invalid POST"""
        response = self.client.post(
            '/api/auth/', data={
                'username': 'nope',
                'password': 'nope',
            }
        )

        self.assertContains(response, "Login or password is incorrect.", status_code=400)

        response = self.client.get('/api/auth/')
        self.assertEqual(response.status_code, 200)

        user_json = response.json()
        self.assertIsNone(user_json['id'])

    def test_login(self):
        """api signs user in"""
        user = UserModel.objects.create_user('Bob', 'bob@test.com', 'Pass.123')

        response = self.client.post(
            '/api/auth/',
            data={
                'username': 'Bob',
                'password': 'Pass.123',
            },
        )

        self.assertEqual(response.status_code, 200)

        response = self.client.get('/api/auth/')
        self.assertEqual(response.status_code, 200)

        user_json = response.json()
        self.assertEqual(user_json['id'], user.id)
        self.assertEqual(user_json['username'], user.username)

    def test_login_whitespaces_password(self):
        """api signs user in with password left untouched"""
        user = UserModel.objects.create_user('Bob', 'bob@test.com', ' Pass.123 ')

        response = self.client.post(
            '/api/auth/',
            data={
                'username': 'Bob',
                'password': 'Pass.123',
            },
        )

        self.assertEqual(response.status_code, 400)

        response = self.client.post(
            '/api/auth/',
            data={
                'username': 'Bob',
                'password': ' Pass.123 ',
            },
        )

        self.assertEqual(response.status_code, 200)

        response = self.client.get('/api/auth/')
        self.assertEqual(response.status_code, 200)

        user_json = response.json()
        self.assertEqual(user_json['id'], user.id)
        self.assertEqual(user_json['username'], user.username)

    def test_submit_no_data(self):
        """login api errors for no body"""
        response = self.client.post('/api/auth/')

        self.assertEqual(response.status_code, 400)
        self.assertEqual(response.json(), {
            'username': ['This field is required.'],
            'password': ['This field is required.'],
        })

    def test_submit_empty(self):
        """login api errors for empty fields"""
        response = self.client.post('/api/auth/', data={
            'username': '',
            'password': '',
        })

        self.assertEqual(response.status_code, 400)
        self.assertEqual(response.json(), {
            'username': ['This field may not be blank.'],
            'password': ['This field may not be blank.'],
        })

    def test_submit_invalid(self):
        """login api errors for invalid data"""
        response = self.client.post(
            '/api/auth/',
            'false',
            content_type="application/json",
        )

        self.assertContains(response, "Invalid data.", status_code=400)

    def test_login_banned(self):
        """login api fails to sign banned user in"""
        UserModel.objects.create_user('Bob', 'bob@test.com', 'Pass.123')

        ban = Ban.objects.create(
            check_type=Ban.USERNAME,
            banned_value='bob',
            user_message='You are tragically banned.',
        )

        response = self.client.post(
            '/api/auth/',
            data={
                'username': 'Bob',
                'password': 'Pass.123',
            },
        )
        self.assertEqual(response.status_code, 403)
        self.assertEqual(response.json(), {
            'detail': {
                'html': '<p>%s</p>' % ban.user_message,
                'plain': ban.user_message,
            },
            'expires_on': None,
        })

        response = self.client.get('/api/auth/')
        self.assertEqual(response.status_code, 200)

        user_json = response.json()
        self.assertIsNone(user_json['id'])

    def test_login_banned_staff(self):
        """login api signs banned staff member in"""
        user = UserModel.objects.create_user('Bob', 'bob@test.com', 'Pass.123')

        user.is_staff = True
        user.save()

        Ban.objects.create(
            check_type=Ban.USERNAME,
            banned_value='bob',
            user_message='You are tragically banned.',
        )

        response = self.client.post(
            '/api/auth/',
            data={
                'username': 'Bob',
                'password': 'Pass.123',
            },
        )
        self.assertEqual(response.status_code, 200)

        response = self.client.get('/api/auth/')
        self.assertEqual(response.status_code, 200)

        user_json = response.json()
        self.assertEqual(user_json['id'], user.id)
        self.assertEqual(user_json['username'], user.username)

    def test_login_inactive_admin(self):
        """login api fails to sign admin-activated user in"""
        UserModel.objects.create_user('Bob', 'bob@test.com', 'Pass.123', requires_activation=2)

        response = self.client.post(
            '/api/auth/',
            data={
                'username': 'Bob',
                'password': 'Pass.123',
            },
        )
        self.assertEqual(response.status_code, 400)
        self.assertEqual(response.json(), {
            'non_field_errors': [
                "Your account has to be activated by Administrator before you will be able to sign in.",
            ],
        })

        response = self.client.get('/api/auth/')
        self.assertEqual(response.status_code, 200)

        user_json = response.json()
        self.assertIsNone(user_json['id'])

    def test_login_inactive_user(self):
        """login api fails to sign user-activated user in"""
        UserModel.objects.create_user('Bob', 'bob@test.com', 'Pass.123', requires_activation=1)

        response = self.client.post(
            '/api/auth/',
            data={
                'username': 'Bob',
                'password': 'Pass.123',
            },
        )
        self.assertEqual(response.status_code, 400)
        self.assertEqual(response.json(), {
            'non_field_errors': [
                "You have to activate your account before you will be able to sign in.",
            ],
        })

        response = self.client.get('/api/auth/')
        self.assertEqual(response.status_code, 200)

        user_json = response.json()
        self.assertIsNone(user_json['id'])

    def test_login_disabled_user(self):
        """its impossible to sign in to disabled account"""
        user = UserModel.objects.create_user('Bob', 'bob@test.com', 'Pass.123', is_active=False)

        user.is_staff = True
        user.save()

        response = self.client.post(
            '/api/auth/',
            data={
                'username': 'Bob',
                'password': 'Pass.123',
            },
        )
        self.assertContains(response, "Login or password is incorrect.", status_code=400)

        response = self.client.get('/api/auth/')
        self.assertEqual(response.status_code, 200)

        user_json = response.json()
        self.assertIsNone(user_json['id'])


class UserRequirementsTests(TestCase):
    def test_edge_returns_response(self):
        """api edge has no showstoppers"""
        response = self.client.get('/api/auth/requirements/')
        self.assertEqual(response.status_code, 200)


class SendActivationAPITests(TestCase):
    def setUp(self):
        self.user = UserModel.objects.create_user('Bob', 'bob@test.com', 'Pass.123')
        self.user.requires_activation = 1
        self.user.save()

        self.link = '/api/auth/send-activation/'

    def test_submit_valid(self):
        """request activation link api sends reset link mail"""
        response = self.client.post(
            self.link,
            data={
                'email': self.user.email,
            },
        )
        self.assertEqual(response.status_code, 200)

        self.assertIn('Activate Bob', mail.outbox[0].subject)

    def test_submit_banned(self):
        """request activation link api errors for banned users"""
        ban = Ban.objects.create(
            check_type=Ban.USERNAME,
            banned_value=self.user.username,
            user_message='Nope!',
        )

        response = self.client.post(
            self.link,
            data={
                'email': self.user.email,
            },
        )
        self.assertEqual(response.status_code, 403)
        self.assertEqual(response.json(), {
            'detail': {
                'html': '<p>%s</p>' % ban.user_message,
                'plain': ban.user_message,
            },
            'expires_on': None,
        })

        self.assertTrue(not mail.outbox)

    def test_submit_disabled(self):
        """request activation link api fails disabled users"""
        self.user.is_active = False
        self.user.save()

        response = self.client.post(
            self.link,
            data={
                'email': self.user.email,
            },
        )
        self.assertContains(response, "No user with this e-mail exists.", status_code=400)

        self.assertTrue(not mail.outbox)

    def test_submit_empty(self):
        """request activation link api errors for no body"""
        response = self.client.post(self.link)
        self.assertEqual(response.status_code, 400)
        self.assertEqual(response.json(), {'email': ["This field is required."]})

        self.assertTrue(not mail.outbox)

    def test_submit_invalid_data(self):
        """login api errors for invalid data"""
        response = self.client.post(
            self.link,
            'false',
            content_type="application/json",
        )
        self.assertContains(response, "Invalid data.", status_code=400)

    def test_submit_invalid_email(self):
        """request activation link api errors for invalid email"""
        response = self.client.post(
            self.link,
            data={
                'email': 'fake@mail.com',
            },
        )
        self.assertContains(response, "No user with this e-mail exists.", status_code=400)

        self.assertTrue(not mail.outbox)

    def test_submit_active_user(self):
        """request activation link api errors for active user"""
        self.user.requires_activation = 0
        self.user.save()

        response = self.client.post(
            self.link,
            data={
                'email': self.user.email,
            },
        )
        self.assertContains(response, "Bob, your account is already active.", status_code=400)

    def test_submit_inactive_user(self):
        """request activation link api errors for admin-activated users"""
        self.user.requires_activation = 2
        self.user.save()

        response = self.client.post(
            self.link,
            data={
                'email': self.user.email,
            },
        )
        self.assertContains(response, "only administrator may activate your account", status_code=400)

        self.assertTrue(not mail.outbox)

        # but succeed for user-activated
        self.user.requires_activation = 1
        self.user.save()

        response = self.client.post(
            self.link, data={
                'email': self.user.email,
            }
        )
        self.assertEqual(response.json(), {
            'username': self.user.username,
            'email': self.user.email,
        })

        self.assertTrue(mail.outbox)


class SendPasswordFormAPITests(TestCase):
    def setUp(self):
        self.user = UserModel.objects.create_user('Bob', 'bob@test.com', 'Pass.123')

        self.link = '/api/auth/send-password-form/'

    def test_submit_valid(self):
        """request change password form link api sends reset link mail"""
        response = self.client.post(
            self.link,
            data={
                'email': self.user.email,
            },
        )
        self.assertEqual(response.status_code, 200)

        self.assertIn('Change Bob password', mail.outbox[0].subject)

    def test_submit_banned(self):
        """request change password form link api errors for banned users"""
        ban = Ban.objects.create(
            check_type=Ban.USERNAME,
            banned_value=self.user.username,
            user_message='Nope!',
        )

        response = self.client.post(
            self.link,
            data={
                'email': self.user.email,
            },
        )
        self.assertEqual(response.status_code, 403)
        self.assertEqual(response.json(), {
            'detail': {
                'html': '<p>%s</p>' % ban.user_message,
                'plain': ban.user_message,
            },
            'expires_on': None,
        })

        self.assertTrue(not mail.outbox)

    def test_submit_disabled(self):
        """request change password form api fails disabled users"""
        self.user.is_active = False
        self.user.save()

        response = self.client.post(
            self.link,
            data={
                'email': self.user.email,
            },
        )
        self.assertContains(response, "No user with this e-mail exists.", status_code=400)

        self.assertTrue(not mail.outbox)

    def test_submit_empty(self):
        """request change password form link api errors for no body"""
        response = self.client.post(self.link)
        self.assertEqual(response.status_code, 400)
        self.assertEqual(response.json(), {'email': ["This field is required."]})

        self.assertTrue(not mail.outbox)

    def test_submit_invalid(self):
        """request change password form link api errors for invalid email"""
        response = self.client.post(
            self.link,
            data={
                'email': 'fake@mail.com',
            },
        )
        self.assertContains(response, "No user with this e-mail exists.", status_code=400)

        self.assertTrue(not mail.outbox)

    def test_submit_invalid_data(self):
        """login api errors for invalid data"""
        response = self.client.post(
            self.link,
            'false',
            content_type="application/json",
        )
        self.assertContains(response, "Invalid data.", status_code=400)

    def test_submit_inactive_user(self):
        """request change password form link api errors for inactive users"""
        self.user.requires_activation = 1
        self.user.save()

        response = self.client.post(
            self.link,
            data={
                'email': self.user.email,
            },
        )
        self.assertContains(response, "You have to activate your account", status_code=400)
        self.assertTrue(not mail.outbox)

        self.user.requires_activation = 2
        self.user.save()

        response = self.client.post(
            self.link,
            data={
                'email': self.user.email,
            },
        )
        self.assertContains(response, "Administrator has to activate your account", status_code=400)
        self.assertTrue(not mail.outbox)


class ChangePasswordAPITests(TestCase):
    def setUp(self):
        self.user = UserModel.objects.create_user('Bob', 'bob@test.com', 'Pass.123')
        self.link = '/api/auth/change-password/%s/'

    def test_submit_valid(self):
        """submit change password form api changes password"""
        response = self.client.post(
            self.link % self.user.pk,
            data={
                'password': 'n3wp4ss!',
                'token': make_password_change_token(self.user),
            },
        )
        self.assertEqual(response.status_code, 200)

        user = UserModel.objects.get(id=self.user.pk)
        self.assertTrue(user.check_password('n3wp4ss!'))

    def test_submit_with_whitespaces(self):
        """submit change password form api changes password with whitespaces"""
        response = self.client.post(
            self.link % self.user.pk,
            data={
                'password': ' n3wp4ss! ',
                'token': make_password_change_token(self.user),
            },
        )
        self.assertEqual(response.status_code, 200)

        user = UserModel.objects.get(id=self.user.pk)
        self.assertTrue(user.check_password(' n3wp4ss! '))

    def test_submit_invalid_data(self):
        """login api errors for invalid data"""
        response = self.client.post(
            self.link % self.user.pk,
            'false',
            content_type="application/json",
        )
        self.assertContains(response, "Invalid data.", status_code=400)

    def test_invalid_token(self):
        """api errors on invalid user id link"""
        response = self.client.post(
            self.link % self.user.pk,
            data={
                'password': 'n3wp4ss!',
                'token': 'invalid!',
            },
        )
        self.assertContains(response, "Form link is invalid or expired.", status_code=400)

    def test_banned_user_link(self):
        """request errors because user is banned"""
        ban = Ban.objects.create(
            check_type=Ban.USERNAME,
            banned_value=self.user.username,
            user_message='Nope!',
        )

        response = self.client.post(
            self.link % self.user.pk,
            data={
                'password': 'n3wp4ss!',
                'token': make_password_change_token(self.user),
            },
        )
        self.assertEqual(response.status_code, 403)
        self.assertEqual(response.json(), {
            'detail': {
                'html': '<p>%s</p>' % ban.user_message,
                'plain': ban.user_message,
            },
            'expires_on': None,
        })

    def test_inactive_user(self):
        """change password api errors for inactive users"""
        self.user.requires_activation = 1
        self.user.save()

        response = self.client.post(
            self.link % self.user.pk,
            data={
                'password': 'n3wp4ss!',
                'token': make_password_change_token(self.user),
            },
        )
        self.assertContains(response, "You have to activate your account", status_code=400)

        self.user.requires_activation = 2
        self.user.save()

        response = self.client.post(
            self.link % self.user.pk,
            data={
                'password': 'n3wp4ss!',
                'token': make_password_change_token(self.user),
            },
        )
        self.assertContains(response, "Administrator has to activate your account", status_code=400)

    def test_disabled_user(self):
        """change password api errors for disabled users"""
        self.user.is_active = False
        self.user.save()

        response = self.client.post(self.link % self.user.pk)
        self.assertEqual(response.status_code, 404)

    def test_submit_empty(self):
        """change password api errors for empty body"""
        response = self.client.post(self.link % self.user.pk)
        self.assertContains(response, "This field is required.", status_code=400)