from core.test_utils import grant_all_locations
from datetime import date

from django.contrib.auth import get_user_model
from django.contrib.auth.models import Group
from django.core.exceptions import ValidationError
from django.db import IntegrityError, transaction
from django.test import TestCase

from core.models import Directory, DirectoryType, PortalAccess
from apps.employees.models import EmployeePermissionOverride
from apps.locations.models import Pharmacy
from apps.rro.models import CashRegister

Employee = get_user_model()


def grant_office_access(user):
    user.groups.add(Group.objects.get(name='Офисный сотрудник'))
    for attr in ('_perm_cache', '_user_perm_cache', '_group_perm_cache'):
        if hasattr(user, attr):
            delattr(user, attr)


def grant_rro_access(user):
    from django.contrib.auth.models import Permission
    from django.contrib.contenttypes.models import ContentType
    ct = ContentType.objects.get_for_model(PortalAccess, for_concrete_model=False)
    perm = Permission.objects.get(content_type=ct, codename='access_rro')
    EmployeePermissionOverride.objects.get_or_create(
        employee=user,
        permission=perm,
        defaults={'override_type': 'grant'},
    )
    for attr in ('_perm_cache', '_user_perm_cache', '_group_perm_cache'):
        if hasattr(user, attr):
            delattr(user, attr)


class CashRegisterModelTests(TestCase):
    @classmethod
    def setUpTestData(cls):
        org_type = DirectoryType.objects.create(code='organization', name='Организация')
        region_type = DirectoryType.objects.create(code='region', name='Регион')
        status_type, _ = DirectoryType.objects.get_or_create(
            code='rro_status', defaults={'name': 'Статус РРО/ПРРО', 'hierarchy_type': 'strict'},
        )
        cls.status_active, _ = Directory.objects.get_or_create(
            directory_type=status_type, code='active',
            defaults={'name': 'Активный', 'is_active': True},
        )
        cls.region = Directory.objects.create(directory_type=region_type, code='od', name='Одесса')
        cls.org = Directory.objects.create(directory_type=org_type, code='akc', name='АКС')
        cls.pharmacy = Pharmacy.objects.create(
            organization=cls.org, location_region=cls.region,
            pharmacy_number=42, location_type='pharmacy',
            street='Тестовая', house_number='1',
        )
        cls.pharmacy2 = Pharmacy.objects.create(
            organization=cls.org, location_region=cls.region,
            pharmacy_number=43, location_type='pharmacy',
            street='Другая', house_number='2',
        )

    def _reg(self, **kw):
        defaults = {
            'pharmacy': self.pharmacy,
            'kind': CashRegister.Kind.PRRO,
            'fiscal_number': kw.pop('fiscal_number', f'FN-{CashRegister.objects.count()+1}'),
            'status': self.status_active,
        }
        defaults.update(kw)
        return CashRegister(**defaults)

    def test_seed_statuses_exist(self):
        codes = set(
            Directory.objects.filter(directory_type__code='rro_status')
            .values_list('code', flat=True)
        )
        self.assertTrue({'active', 'reserve', 'repair', 'decommissioned'} <= codes)

    def test_unique_fiscal_number(self):
        self._reg(fiscal_number='FN-UNIQUE').save()
        with self.assertRaises(IntegrityError):
            with transaction.atomic():
                self._reg(fiscal_number='FN-UNIQUE', pharmacy=self.pharmacy2).save()

    def test_only_one_primary_per_pharmacy(self):
        a = self._reg(fiscal_number='FN-P1', is_primary=True)
        a.full_clean()
        a.save()
        b = self._reg(fiscal_number='FN-P2', is_primary=True)
        with self.assertRaises(ValidationError):
            b.full_clean()

    def test_primary_ok_on_different_pharmacies(self):
        a = self._reg(fiscal_number='FN-A', is_primary=True)
        a.full_clean()
        a.save()
        b = self._reg(fiscal_number='FN-B', pharmacy=self.pharmacy2, is_primary=True)
        b.full_clean()
        b.save()


class CashRegisterPortalTests(TestCase):
    @classmethod
    def setUpTestData(cls):
        org_type = DirectoryType.objects.create(code='organization', name='Организация')
        region_type = DirectoryType.objects.create(code='region', name='Регион')
        status_type, _ = DirectoryType.objects.get_or_create(
            code='rro_status', defaults={'name': 'Статус РРО/ПРРО', 'hierarchy_type': 'strict'},
        )
        cls.status_active, _ = Directory.objects.get_or_create(
            directory_type=status_type, code='active',
            defaults={'name': 'Активный', 'is_active': True},
        )
        region = Directory.objects.create(directory_type=region_type, code='kv', name='Киев')
        org = Directory.objects.create(directory_type=org_type, code='org', name='ТестОрг')
        cls.pharmacy = Pharmacy.objects.create(
            organization=org, location_region=region,
            pharmacy_number=7, location_type='pharmacy',
            street='Главная', house_number='7',
        )
        CashRegister.objects.create(
            pharmacy=cls.pharmacy, kind=CashRegister.Kind.RRO,
            fiscal_number='FN-PORTAL-1', status=cls.status_active,
            model_name='Datecs FP-700', is_primary=True,
        )
        cls.user = Employee.objects.create(
            username='rro.staff',
            email='rro.staff@company.local',
            first_name='РРО',
            last_name='Тест',
            hire_date=date(2026, 1, 1),
            user_location_type='office',
            is_staff=True,
            mattermost_sync_enabled=False,
            ad_sync_enabled=False,
            totp_enabled=True,
        )
        grant_all_locations(cls.user)
        grant_rro_access(cls.user)

    def _login(self):
        self.client.force_login(self.user)
        session = self.client.session
        session['2fa_verified'] = True
        session.save()

    def test_rro_list_page(self):
        self._login()
        resp = self.client.get('/rro/', HTTP_HX_REQUEST='true')
        self.assertEqual(resp.status_code, 200)
        self.assertContains(resp, 'FN-PORTAL-1')
        self.assertContains(resp, 'id="rro-form-panel"')
        self.assertContains(resp, 'role="dialog"')
        self.assertNotContains(resp, 'id="rro-form-overlay"')
        self.assertNotContains(resp, 'translateX(100%)')

    def test_pharmacy_detail_rro_tab(self):
        self._login()
        resp = self.client.get(f'/pharmacies/{self.pharmacy.pk}/', HTTP_HX_REQUEST='true')
        self.assertEqual(resp.status_code, 200)
        self.assertContains(resp, 'FN-PORTAL-1')
        self.assertContains(resp, 'ph-panel-rro')

    def test_pharmacy_detail_hides_rro_for_other_pharmacy_user(self):
        other = Pharmacy.objects.create(
            organization=self.pharmacy.organization,
            location_region=self.pharmacy.location_region,
            pharmacy_number=99, location_type='pharmacy',
            street='Чужа', house_number='9',
        )
        stranger = Employee.objects.create(
            username='rro.stranger',
            email='rro.stranger@company.local',
            first_name='Інша',
            last_name='Аптека',
            hire_date=date(2026, 1, 1),
            user_location_type='pharmacy',
            user_pharmacy=other,
            is_staff=False,
            mattermost_sync_enabled=False,
            ad_sync_enabled=False,
        )
        self.client.force_login(stranger)
        session = self.client.session
        session['2fa_verified'] = True
        session.save()
        # Чужая аптека вне области доступа: карточка недоступна целиком (404),
        # операционные данные (РРО и т.п.) не утекают.
        resp = self.client.get(f'/pharmacies/{self.pharmacy.pk}/', HTTP_HX_REQUEST='true')
        self.assertEqual(resp.status_code, 404)
        self.assertNotContains(resp, 'FN-PORTAL-1', status_code=404)
        self.assertNotContains(resp, 'ph-panel-rro', status_code=404)


class ManagerRroScopeTests(TestCase):
    @classmethod
    def setUpTestData(cls):
        org_type = DirectoryType.objects.create(code='organization', name='Организация')
        region_type = DirectoryType.objects.create(code='region', name='Регион')
        status_type, _ = DirectoryType.objects.get_or_create(
            code='rro_status', defaults={'name': 'Статус РРО/ПРРО', 'hierarchy_type': 'strict'},
        )
        cls.status_active, _ = Directory.objects.get_or_create(
            directory_type=status_type, code='active',
            defaults={'name': 'Активный', 'is_active': True},
        )
        region = Directory.objects.create(directory_type=region_type, code='kv2', name='Киев')
        org = Directory.objects.create(directory_type=org_type, code='orgm', name='ТестОрг')
        cls.pharmacy_a = Pharmacy.objects.create(
            organization=org, location_region=region,
            pharmacy_number=1, location_type='pharmacy',
            street='A', house_number='1',
        )
        cls.pharmacy_b = Pharmacy.objects.create(
            organization=org, location_region=region,
            pharmacy_number=2, location_type='pharmacy',
            street='B', house_number='2',
        )
        CashRegister.objects.create(
            pharmacy=cls.pharmacy_a, kind=CashRegister.Kind.RRO,
            fiscal_number='FN-MINE', status=cls.status_active,
        )
        CashRegister.objects.create(
            pharmacy=cls.pharmacy_b, kind=CashRegister.Kind.RRO,
            fiscal_number='FN-OTHER', status=cls.status_active,
        )
        cls.manager = Employee.objects.create(
            username='rro.manager',
            email='rro.manager@company.local',
            first_name='Зав',
            last_name='Аптекой',
            hire_date=date(2026, 1, 1),
            user_location_type='pharmacy',
            user_pharmacy=cls.pharmacy_a,
            is_staff=False,
            mattermost_sync_enabled=False,
            ad_sync_enabled=False,
        )
        cls.manager.groups.add(Group.objects.get(name='Заведующий аптекой'))

    def _login(self):
        self.client.force_login(self.manager)
        session = self.client.session
        session['2fa_verified'] = True
        session.save()

    def test_manager_sees_only_own_pharmacy(self):
        self._login()
        resp = self.client.get('/rro/', HTTP_HX_REQUEST='true')
        self.assertEqual(resp.status_code, 200)
        self.assertContains(resp, 'FN-MINE')
        self.assertNotContains(resp, 'FN-OTHER')
        self.assertTrue(resp.context['rro_pharmacy_scoped'])

    def test_manager_cannot_bypass_with_query_param(self):
        self._login()
        resp = self.client.get(
            f'/rro/?pharmacy={self.pharmacy_b.pk}',
            HTTP_HX_REQUEST='true',
        )
        self.assertEqual(resp.status_code, 200)
        self.assertNotContains(resp, 'FN-OTHER')


class CashRegisterCrudTests(TestCase):
    @classmethod
    def setUpTestData(cls):
        org_type = DirectoryType.objects.create(code='organization', name='Организация')
        region_type = DirectoryType.objects.create(code='region', name='Регион')
        status_type, _ = DirectoryType.objects.get_or_create(
            code='rro_status', defaults={'name': 'Статус РРО/ПРРО', 'hierarchy_type': 'strict'},
        )
        cls.status_active, _ = Directory.objects.get_or_create(
            directory_type=status_type, code='active',
            defaults={'name': 'Активный', 'is_active': True},
        )
        cls.status_repair, _ = Directory.objects.get_or_create(
            directory_type=status_type, code='repair',
            defaults={'name': 'В ремонте', 'is_active': True},
        )
        region = Directory.objects.create(directory_type=region_type, code='od2', name='Одесса2')
        org = Directory.objects.create(directory_type=org_type, code='org2', name='Орг2')
        cls.pharmacy = Pharmacy.objects.create(
            organization=org, location_region=region,
            pharmacy_number=11, location_type='pharmacy',
            street='CRUD', house_number='1',
        )
        cls.staff = Employee.objects.create(
            username='rro.crud.staff',
            email='rro.crud.staff@company.local',
            first_name='CRUD',
            last_name='Staff',
            hire_date=date(2026, 1, 1),
            user_location_type='office',
            is_staff=True,
            mattermost_sync_enabled=False,
            ad_sync_enabled=False,
            totp_enabled=True,
        )
        cls.regular = Employee.objects.create(
            username='rro.crud.user',
            email='rro.crud.user@company.local',
            first_name='CRUD',
            last_name='User',
            hire_date=date(2026, 1, 1),
            user_location_type='pharmacy',
            user_pharmacy=cls.pharmacy,
            is_staff=False,
            mattermost_sync_enabled=False,
            ad_sync_enabled=False,
        )
        grant_all_locations(cls.staff)
        grant_rro_access(cls.staff)

    def _login(self, user):
        self.client.force_login(user)
        session = self.client.session
        session['2fa_verified'] = True
        session.save()

    def _payload(self, **extra):
        data = {
            'pharmacy': self.pharmacy.pk,
            'kind': CashRegister.Kind.PRRO,
            'fiscal_number': 'FN-CRUD-NEW',
            'status': self.status_active.pk,
            'model_name': 'Checkbox',
            'provider': 'checkbox',
        }
        data.update(extra)
        return data

    def test_staff_create(self):
        self._login(self.staff)
        resp = self.client.post('/rro/create/', self._payload(), HTTP_HX_REQUEST='true')
        self.assertEqual(resp.status_code, 200)
        self.assertTrue(CashRegister.objects.filter(fiscal_number='FN-CRUD-NEW').exists())
        self.assertContains(resp, 'Кассовый аппарат добавлен')

    def test_non_staff_create_forbidden(self):
        # Есть просмотр РРО, но без staff — create запрещён (не редирект раздела).
        grant_rro_access(self.regular)
        self._login(self.regular)
        resp = self.client.post('/rro/create/', self._payload(fiscal_number='FN-FORBIDDEN'))
        self.assertEqual(resp.status_code, 403)
        self.assertFalse(CashRegister.objects.filter(fiscal_number='FN-FORBIDDEN').exists())

    def test_staff_update(self):
        reg = CashRegister.objects.create(
            pharmacy=self.pharmacy, kind=CashRegister.Kind.RRO,
            fiscal_number='FN-UPD', status=self.status_active,
        )
        self._login(self.staff)
        resp = self.client.post(
            f'/rro/{reg.pk}/update/',
            self._payload(
                fiscal_number='FN-UPD-2',
                kind=CashRegister.Kind.RRO,
                status=self.status_repair.pk,
                provider='',
            ),
            HTTP_HX_REQUEST='true',
        )
        self.assertEqual(resp.status_code, 200)
        reg.refresh_from_db()
        self.assertEqual(reg.fiscal_number, 'FN-UPD-2')
        self.assertEqual(reg.status_id, self.status_repair.pk)

    def test_duplicate_fiscal_shows_form_error(self):
        CashRegister.objects.create(
            pharmacy=self.pharmacy, kind=CashRegister.Kind.PRRO,
            fiscal_number='FN-DUP', status=self.status_active,
        )
        self._login(self.staff)
        resp = self.client.post(
            '/rro/create/',
            self._payload(fiscal_number='FN-DUP'),
            HTTP_HX_REQUEST='true',
        )
        self.assertEqual(resp.status_code, 200)
        self.assertEqual(CashRegister.objects.filter(fiscal_number='FN-DUP').count(), 1)
        self.assertTrue(resp.context['rro_form_errors'])

    def test_primary_conflict_shows_form_error(self):
        CashRegister.objects.create(
            pharmacy=self.pharmacy, kind=CashRegister.Kind.PRRO,
            fiscal_number='FN-PRIM-1', status=self.status_active, is_primary=True,
        )
        self._login(self.staff)
        resp = self.client.post(
            '/rro/create/',
            self._payload(fiscal_number='FN-PRIM-2', is_primary='1'),
            HTTP_HX_REQUEST='true',
        )
        self.assertEqual(resp.status_code, 200)
        self.assertFalse(CashRegister.objects.filter(fiscal_number='FN-PRIM-2').exists())
        self.assertIn('is_primary', resp.context['rro_form_errors'])

    def test_new_query_opens_create_panel(self):
        self._login(self.staff)
        resp = self.client.get(
            f'/rro/?pharmacy={self.pharmacy.pk}&new=1',
            HTTP_HX_REQUEST='true',
        )
        self.assertEqual(resp.status_code, 200)
        self.assertTrue(resp.context['show_create_panel'])
        self.assertEqual(str(resp.context['prefill_pharmacy']), str(self.pharmacy.pk))