# tests/unit/services/test_admin_service.py
import pytest

from app.exceptions import ValidationException
from app.modules.analytics.services.stats_service import stats_service
from app.modules.tenancy.exceptions import (
    AdminOperationException,
    CannotModifySelfException,
    MerchantNotFoundException,
    StoreAlreadyExistsException,
    StoreNotFoundException,
    UserNotFoundException,
    UserStatusChangeException,
)
from app.modules.tenancy.schemas.store import StoreCreate
from app.modules.tenancy.services.admin_service import AdminService


@pytest.mark.unit
@pytest.mark.admin
class TestAdminService:
    """Test suite for AdminService following the application's testing patterns"""

    def setup_method(self):
        """Setup method following the same pattern as product service tests"""
        self.service = AdminService()

    # User Management Tests
    def test_get_all_users(self, db, test_user, test_admin):
        """Test getting all users with pagination"""
        users = self.service.get_all_users(db, skip=0, limit=10)

        assert len(users) >= 2  # test_user + test_admin
        user_ids = [user.id for user in users]
        assert test_user.id in user_ids
        assert test_admin.id in user_ids

    def test_get_all_users_with_pagination(self, db, test_user, test_admin):
        """Test user pagination works correctly"""
        users = self.service.get_all_users(db, skip=0, limit=1)
        assert len(users) == 1

        users_second_page = self.service.get_all_users(db, skip=1, limit=1)
        assert len(users_second_page) == 1
        assert users[0].id != users_second_page[0].id

    def test_toggle_user_status_deactivate(self, db, test_user, test_admin):
        """Test deactivating a user"""
        assert test_user.is_active is True

        user, message = self.service.toggle_user_status(db, test_user.id, test_admin.id)

        assert user.id == test_user.id
        assert user.is_active is False
        assert test_user.username in message
        assert "deactivated" in message

    def test_toggle_user_status_activate(self, db, test_user, test_admin):
        """Test activating a user"""
        from app.modules.tenancy.models import User

        # Re-query user to get fresh instance
        user_to_deactivate = db.query(User).filter(User.id == test_user.id).first()
        user_to_deactivate.is_active = False
        db.commit()

        user, message = self.service.toggle_user_status(db, test_user.id, test_admin.id)

        assert user.id == test_user.id
        assert user.is_active is True
        assert "activated" in message

    def test_toggle_user_status_user_not_found(self, db, test_admin):
        """Test toggle user status when user not found"""
        with pytest.raises(UserNotFoundException) as exc_info:
            self.service.toggle_user_status(db, 99999, test_admin.id)

        exception = exc_info.value
        assert exception.error_code == "USER_NOT_FOUND"
        assert "99999" in exception.message

    def test_toggle_user_status_cannot_modify_self(self, db, test_admin):
        """Test that admin cannot modify their own account"""
        with pytest.raises(CannotModifySelfException) as exc_info:
            self.service.toggle_user_status(db, test_admin.id, test_admin.id)

        exception = exc_info.value
        assert exception.error_code == "CANNOT_MODIFY_SELF"
        assert "deactivate account" in exception.message

    def test_toggle_user_status_cannot_modify_admin(
        self, db, test_admin, another_admin
    ):
        """Test that admin cannot modify another admin"""
        with pytest.raises(UserStatusChangeException) as exc_info:
            self.service.toggle_user_status(db, another_admin.id, test_admin.id)

        exception = exc_info.value
        assert exception.error_code == "USER_STATUS_CHANGE_FAILED"
        assert "Cannot modify another admin user" in exception.message

    # Store Management Tests
    def test_get_all_stores(self, db, test_store):
        """Test getting all stores with total count"""
        stores, total = self.service.get_all_stores(db, skip=0, limit=10)

        assert total >= 1
        assert len(stores) >= 1
        store_codes = [store.store_code for store in stores]
        assert test_store.store_code in store_codes

    def test_get_all_stores_with_pagination(self, db, test_store, verified_store):
        """Test store pagination works correctly"""
        stores, total = self.service.get_all_stores(db, skip=0, limit=1)

        assert total >= 2
        assert len(stores) == 1

        stores_second_page, _ = self.service.get_all_stores(db, skip=1, limit=1)
        assert len(stores_second_page) >= 0
        if len(stores_second_page) > 0:
            assert stores[0].id != stores_second_page[0].id

    def test_verify_store_mark_verified(self, db, test_store):
        """Test marking store as verified"""
        from app.modules.tenancy.models import Store

        # Re-query store to get fresh instance
        store_to_unverify = (
            db.query(Store).filter(Store.id == test_store.id).first()
        )
        store_to_unverify.is_verified = False
        db.commit()

        store, message = self.service.verify_store(db, test_store.id)

        assert store.id == test_store.id
        assert store.is_verified is True
        assert "verified" in message

    def test_verify_store_mark_unverified(self, db, verified_store):
        """Test marking verified store as unverified"""
        store, message = self.service.verify_store(db, verified_store.id)

        assert store.id == verified_store.id
        assert store.is_verified is False
        assert verified_store.store_code in message
        assert "unverified" in message

    def test_verify_store_not_found(self, db):
        """Test verify store when store not found"""
        with pytest.raises(StoreNotFoundException) as exc_info:
            self.service.verify_store(db, 99999)

        exception = exc_info.value
        assert exception.error_code == "STORE_NOT_FOUND"
        assert "99999" in exception.message

    def test_toggle_store_status_deactivate(self, db, test_store):
        """Test deactivating a store"""
        original_status = test_store.is_active

        store, message = self.service.toggle_store_status(db, test_store.id)

        assert store.id == test_store.id
        assert store.is_active != original_status
        assert test_store.store_code in message
        if original_status:
            assert "deactivated" in message
        else:
            assert "activated" in message

    def test_toggle_store_status_not_found(self, db):
        """Test toggle store status when store not found"""
        with pytest.raises(StoreNotFoundException) as exc_info:
            self.service.toggle_store_status(db, 99999)

        exception = exc_info.value
        assert exception.error_code == "STORE_NOT_FOUND"

    # NOTE: Marketplace Import Jobs tests have been moved to the marketplace module.
    # See tests/unit/services/test_marketplace_import_job_service.py

    # Statistics Tests
    def test_get_user_statistics(self, db, test_user, test_admin):
        """Test getting user statistics"""
        stats = stats_service.get_user_statistics(db)

        assert "total_users" in stats
        assert "active_users" in stats
        assert "inactive_users" in stats
        assert "activation_rate" in stats

        assert isinstance(stats["total_users"], int)
        assert isinstance(stats["active_users"], int)
        assert isinstance(stats["inactive_users"], int)
        assert isinstance(stats["activation_rate"], int | float)

        assert stats["total_users"] >= 2  # test_user + test_admin
        assert stats["active_users"] + stats["inactive_users"] == stats["total_users"]

    def test_get_store_statistics(self, db, test_store):
        """Test getting store statistics"""
        stats = stats_service.get_store_statistics(db)

        assert "total" in stats
        assert "verified" in stats
        assert "pending" in stats
        assert "inactive" in stats
        assert "verification_rate" in stats

        assert isinstance(stats["total"], int)
        assert isinstance(stats["verified"], int)
        assert isinstance(stats["verification_rate"], int | float)

        assert stats["total"] >= 1

    # Error Handling Tests
    def test_get_all_users_database_error(self, db_with_error, test_admin):
        """Test handling database errors in get_all_users"""
        with pytest.raises(AdminOperationException) as exc_info:
            self.service.get_all_users(db_with_error, skip=0, limit=10)

        exception = exc_info.value
        assert exception.error_code == "ADMIN_OPERATION_FAILED"
        assert "get_all_users" in exception.message

    def test_get_all_stores_database_error(self, db_with_error):
        """Test handling database errors in get_all_stores"""
        with pytest.raises(AdminOperationException) as exc_info:
            self.service.get_all_stores(db_with_error, skip=0, limit=10)

        exception = exc_info.value
        assert exception.error_code == "ADMIN_OPERATION_FAILED"
        assert "get_all_stores" in exception.message

    # Edge Cases
    def test_get_all_users_empty_database(self, empty_db):
        """Test getting users when database is empty"""
        users = self.service.get_all_users(empty_db, skip=0, limit=10)
        assert len(users) == 0

    def test_get_all_stores_empty_database(self, empty_db):
        """Test getting stores when database is empty"""
        stores, total = self.service.get_all_stores(empty_db, skip=0, limit=10)
        assert len(stores) == 0
        assert total == 0

    def test_user_statistics_empty_database(self, empty_db):
        """Test user statistics when no users exist"""
        stats = stats_service.get_user_statistics(empty_db)

        assert stats["total_users"] == 0
        assert stats["active_users"] == 0
        assert stats["inactive_users"] == 0
        assert stats["activation_rate"] == 0

    def test_store_statistics_empty_database(self, empty_db):
        """Test store statistics when no stores exist"""
        stats = stats_service.get_store_statistics(empty_db)

        assert stats["total"] == 0
        assert stats["verified"] == 0
        assert stats["inactive"] == 0
        assert stats["verification_rate"] == 0


@pytest.mark.unit
@pytest.mark.admin
class TestAdminServiceStoreCreation:
    """Test suite for AdminService.create_store with platform assignments."""

    def setup_method(self):
        """Setup method following the same pattern as other tests."""
        self.service = AdminService()

    def test_create_store_without_platforms(self, db, test_merchant):
        """Test creating a store without platform assignments."""
        import uuid

        unique_id = str(uuid.uuid4())[:8]
        store_data = StoreCreate(
            merchant_id=test_merchant.id,
            store_code=f"NOPLATFORM_{unique_id}",
            subdomain=f"noplatform{unique_id}",
            name=f"No Platform Store {unique_id}",
        )

        store = self.service.create_store(db, store_data)
        db.commit()

        assert store is not None
        assert store.store_code == store_data.store_code.upper()
        assert store.merchant_id == test_merchant.id
        assert store.is_active is True

    def test_create_store_with_single_platform(
        self, db, test_merchant, test_platform
    ):
        """Test creating a store with one platform assignment."""
        import uuid

        unique_id = str(uuid.uuid4())[:8]
        store_data = StoreCreate(
            merchant_id=test_merchant.id,
            store_code=f"SINGLEPLAT_{unique_id}",
            subdomain=f"singleplat{unique_id}",
            name=f"Single Platform Store {unique_id}",
            platform_ids=[test_platform.id],
        )

        store = self.service.create_store(db, store_data)
        db.commit()
        db.refresh(store)

        assert store is not None
        assert store.store_code == store_data.store_code.upper()

        # Verify platform assignment
        from app.modules.tenancy.models import StorePlatform

        assignment = (
            db.query(StorePlatform)
            .filter(
                StorePlatform.store_id == store.id,
                StorePlatform.platform_id == test_platform.id,
            )
            .first()
        )
        assert assignment is not None
        assert assignment.is_active is True

    def test_create_store_with_multiple_platforms(
        self, db, test_merchant, test_platform, another_platform
    ):
        """Test creating a store with multiple platform assignments."""
        import uuid

        unique_id = str(uuid.uuid4())[:8]
        store_data = StoreCreate(
            merchant_id=test_merchant.id,
            store_code=f"MULTIPLAT_{unique_id}",
            subdomain=f"multiplat{unique_id}",
            name=f"Multi Platform Store {unique_id}",
            platform_ids=[test_platform.id, another_platform.id],
        )

        store = self.service.create_store(db, store_data)
        db.commit()
        db.refresh(store)

        assert store is not None

        # Verify both platform assignments
        from app.modules.tenancy.models import StorePlatform

        assignments = (
            db.query(StorePlatform)
            .filter(StorePlatform.store_id == store.id)
            .all()
        )
        assert len(assignments) == 2

        platform_ids = [a.platform_id for a in assignments]
        assert test_platform.id in platform_ids
        assert another_platform.id in platform_ids

    def test_create_store_with_invalid_platform_id(self, db, test_merchant):
        """Test creating a store with non-existent platform ID (should ignore)."""
        import uuid

        unique_id = str(uuid.uuid4())[:8]
        store_data = StoreCreate(
            merchant_id=test_merchant.id,
            store_code=f"INVALIDPLAT_{unique_id}",
            subdomain=f"invalidplat{unique_id}",
            name=f"Invalid Platform Store {unique_id}",
            platform_ids=[99999],  # Non-existent platform
        )

        # Should succeed but not create assignment for invalid platform
        store = self.service.create_store(db, store_data)
        db.commit()
        db.refresh(store)

        assert store is not None

        # Verify no platform assignments created
        from app.modules.tenancy.models import StorePlatform

        assignments = (
            db.query(StorePlatform)
            .filter(StorePlatform.store_id == store.id)
            .all()
        )
        assert len(assignments) == 0

    def test_create_store_duplicate_code_fails(self, db, test_merchant, test_store):
        """Test creating a store with duplicate store code fails."""
        store_data = StoreCreate(
            merchant_id=test_merchant.id,
            store_code=test_store.store_code,  # Duplicate
            subdomain="uniquesubdomain",
            name="Duplicate Code Store",
        )

        with pytest.raises(StoreAlreadyExistsException):
            self.service.create_store(db, store_data)

    def test_create_store_duplicate_subdomain_fails(self, db, test_merchant, test_store):
        """Test creating a store with duplicate subdomain fails."""
        import uuid

        unique_id = str(uuid.uuid4())[:8]
        store_data = StoreCreate(
            merchant_id=test_merchant.id,
            store_code=f"UNIQUECODE_{unique_id}",
            subdomain=test_store.subdomain,  # Duplicate
            name="Duplicate Subdomain Store",
        )

        with pytest.raises(ValidationException) as exc_info:
            self.service.create_store(db, store_data)

        assert "already taken" in str(exc_info.value)

    def test_create_store_invalid_merchant_fails(self, db):
        """Test creating a store with non-existent merchant fails."""
        import uuid

        unique_id = str(uuid.uuid4())[:8]
        store_data = StoreCreate(
            merchant_id=99999,  # Non-existent
            store_code=f"NOMERCHANT_{unique_id}",
            subdomain=f"nomerchant{unique_id}",
            name="No Merchant Store",
        )

        with pytest.raises(MerchantNotFoundException) as exc_info:
            self.service.create_store(db, store_data)

        assert "not found" in str(exc_info.value)