import unittest

from user_engine.adapters.local import (
    InMemoryUserEngineStore,
    LocalAuthorizationCheckPort,
)
from user_engine.domain import AccountStatus, ProfileScope
from user_engine.errors import AuthorizationDenied
from user_engine.service import PLATFORM_TENANT, UserEngineService
from user_engine.testing.fixtures import (
    FixtureIdentityClaimsAdapter,
    human_actor_claims,
    sample_application,
    sample_application_binding,
    sample_catalog,
)


class MultiTenancyTests(unittest.TestCase):
    def test_tenant_context_denies_cross_tenant_and_platform_root(self):
        service, _, _ = _service()
        session = service.me(_claims(), correlation_id="corr-me")

        with self.assertRaises(AuthorizationDenied):
            service.resolve_tenant_context(session.actor, "tenant:faraday")

        with self.assertRaises(AuthorizationDenied):
            service.resolve_tenant_context(session.actor, PLATFORM_TENANT)

    def test_tenant_account_membership_and_diagnostics(self):
        service, _, _ = _service()
        session = _bootstrap(service)

        account = service.set_tenant_account_status(
            session.actor,
            session.user.user_id,
            AccountStatus.ACTIVE,
            tenant="tenant:coulomb",
            correlation_id="corr-tenant-account",
        )
        membership = service.add_membership(
            session.actor,
            session.user.user_id,
            tenant="tenant:coulomb",
            scope_type="team",
            scope_id="team:demo",
            kind="admin",
            correlation_id="corr-membership",
        )
        diagnostics = service.tenant_diagnostics(
            session.actor,
            tenant="tenant:coulomb",
            correlation_id="corr-diagnostics",
        )

        self.assertEqual(account.tenant, "tenant:coulomb")
        self.assertEqual(membership.tenant, "tenant:coulomb")
        self.assertTrue(diagnostics.checks["membership_facts"])
        self.assertNotIn("membership_facts", diagnostics.issues)
        self.assertIn(
            "membership.added",
            [event.event_type for event in service.outbox_events()],
        )

    def test_tenant_profile_precedes_global_and_app_precedes_tenant(self):
        service, _, _ = _service()
        session = _bootstrap(service)

        service.set_profile_value(
            session.actor,
            session.user.user_id,
            "demo.display_density",
            "compact",
            correlation_id="corr-global",
        )
        service.set_profile_value(
            session.actor,
            session.user.user_id,
            "demo.display_density",
            "comfortable",
            scope=ProfileScope.TENANT,
            scope_id="tenant:coulomb",
            tenant="tenant:coulomb",
            correlation_id="corr-tenant-profile",
        )
        tenant_profile = service.effective_profile(
            session.actor,
            session.user.user_id,
            tenant="tenant:coulomb",
            correlation_id="corr-effective-tenant",
        )
        service.set_profile_value(
            session.actor,
            session.user.user_id,
            "demo.display_density",
            "compact",
            scope=ProfileScope.APPLICATION,
            scope_id="app.demo",
            tenant="tenant:coulomb",
            application_id="app.demo",
            correlation_id="corr-app-profile",
        )
        app_profile = service.effective_profile(
            session.actor,
            session.user.user_id,
            tenant="tenant:coulomb",
            application_id="app.demo",
            correlation_id="corr-effective-app",
        )

        self.assertEqual(tenant_profile.values["demo.display_density"], "comfortable")
        self.assertEqual(
            tenant_profile.source_layers["demo.display_density"],
            "tenant:tenant:coulomb",
        )
        self.assertEqual(app_profile.values["demo.display_density"], "compact")
        self.assertEqual(
            app_profile.source_layers["demo.display_density"],
            "application:app.demo",
        )

    def test_authorization_context_includes_membership_and_assurance_facts(self):
        service, _, authz = _service()
        session = _bootstrap(service)
        service.add_membership(
            session.actor,
            session.user.user_id,
            tenant="tenant:coulomb",
            scope_type="team",
            scope_id="team:demo",
            kind="member",
            correlation_id="corr-membership",
        )

        service.set_profile_value(
            session.actor,
            session.user.user_id,
            "demo.display_density",
            "compact",
            tenant="tenant:coulomb",
            correlation_id="corr-profile",
        )

        request = authz.requests[-1]
        self.assertEqual(request.tenant, "tenant:coulomb")
        self.assertIn("tenant-admin", request.context["actor_roles"])
        self.assertTrue(request.context["assurance"]["mfa"])
        self.assertEqual(len(request.context["target_memberships"]), 1)

    def test_platform_operator_can_manage_another_tenant(self):
        service, _, _ = _service()
        platform_session = service.me(
            _claims(
                subject="platform-operator",
                tenant=PLATFORM_TENANT,
                roles=("platform-operator",),
            ),
            correlation_id="corr-platform-me",
        )
        managed_user = service.create_user(
            platform_session.actor,
            display_name="Managed User",
            primary_email="managed@example.test",
            correlation_id="corr-create-managed",
        )

        account = service.set_tenant_account_status(
            platform_session.actor,
            managed_user.user_id,
            AccountStatus.ACTIVE,
            tenant="tenant:coulomb",
            correlation_id="corr-platform-tenant-account",
        )

        self.assertEqual(account.tenant, "tenant:coulomb")
        self.assertEqual(account.status, AccountStatus.ACTIVE)


def _service():
    store = InMemoryUserEngineStore()
    authz = LocalAuthorizationCheckPort()
    service = UserEngineService(
        store=store,
        identity_adapter=FixtureIdentityClaimsAdapter(),
        authorization=authz,
    )
    return service, store, authz


def _bootstrap(service: UserEngineService):
    session = service.me(_claims(), correlation_id="corr-me")
    service.register_application(
        session.actor,
        sample_application(),
        binding=sample_application_binding(),
        correlation_id="corr-app",
    )
    service.publish_catalog(
        session.actor,
        sample_catalog(),
        correlation_id="corr-catalog",
    )
    return session


def _claims(
    *,
    subject: str = "tenant-admin",
    tenant: str = "tenant:coulomb",
    roles: tuple[str, ...] = ("tenant-admin",),
):
    claims = human_actor_claims(subject=subject, tenant=tenant)
    claims["roles"] = list(roles)
    return claims


if __name__ == "__main__":
    unittest.main()