import pytest
from fastapi import HTTPException
from fastapi.testclient import TestClient
from sqlalchemy.orm import Session

from app.models.business_type import BusinessType
from app.models.plan import Plan
from app.models.subscription import Subscription
from app.models.tenant import Tenant
from app.models.user import User
from app.schemas.tenant import TenantCreate, TenantUpdate
from app.services.tenant_service import (
    assign_user_to_tenant,
    create_tenant,
    delete_tenant,
    get_tenant_by_id,
    get_tenant_list,
    update_tenant,
)


@pytest.fixture
def bt(db_session: Session):
    bt = BusinessType(code="TEST", name="Test")
    db_session.add(bt)
    db_session.flush()
    return bt


@pytest.fixture
def plan(db_session: Session):
    plan = Plan(code="TEST", name="Test", price=0)
    db_session.add(plan)
    db_session.flush()
    return plan


class TestService:
    def test_create(self, db_session: Session, bt, plan):
        data = TenantCreate(
            name="Toko Saya", slug="toko-saya",
            business_type_id=bt.id, plan_id=plan.id,
        )
        tenant = create_tenant(db_session, data)
        assert tenant.name == "Toko Saya"
        assert tenant.slug == "toko-saya"

        sub = db_session.query(Subscription).filter(Subscription.tenant_id == tenant.id).first()
        assert sub is not None

    def test_create_duplicate_slug(self, db_session: Session, bt, plan):
        create_tenant(db_session, TenantCreate(name="A", slug="same", business_type_id=bt.id, plan_id=plan.id))
        with pytest.raises(HTTPException) as exc:
            create_tenant(db_session, TenantCreate(name="B", slug="same", business_type_id=bt.id, plan_id=plan.id))
        assert exc.value.status_code == 409

    def test_get_by_id(self, db_session: Session, bt, plan):
        tenant = create_tenant(db_session, TenantCreate(name="Get", slug="get", business_type_id=bt.id, plan_id=plan.id))
        result = get_tenant_by_id(db_session, tenant.id)
        assert result.id == tenant.id

    def test_get_by_id_not_found(self, db_session: Session):
        with pytest.raises(HTTPException) as exc:
            get_tenant_by_id(db_session, "x")
        assert exc.value.status_code == 404

    def test_list(self, db_session: Session, bt, plan):
        create_tenant(db_session, TenantCreate(name="A", slug="a", business_type_id=bt.id, plan_id=plan.id))
        create_tenant(db_session, TenantCreate(name="B", slug="b", business_type_id=bt.id, plan_id=plan.id))
        assert len(get_tenant_list(db_session)) == 2

    def test_update(self, db_session: Session, bt, plan):
        tenant = create_tenant(db_session, TenantCreate(name="Old", slug="old", business_type_id=bt.id, plan_id=plan.id))
        updated = update_tenant(db_session, tenant.id, TenantUpdate(name="New"))
        assert updated.name == "New"

    def test_update_conflict_slug(self, db_session: Session, bt, plan):
        create_tenant(db_session, TenantCreate(name="A", slug="taken", business_type_id=bt.id, plan_id=plan.id))
        tenant = create_tenant(db_session, TenantCreate(name="B", slug="b", business_type_id=bt.id, plan_id=plan.id))
        with pytest.raises(HTTPException) as exc:
            update_tenant(db_session, tenant.id, TenantUpdate(slug="taken"))
        assert exc.value.status_code == 409

    def test_delete(self, db_session: Session, bt, plan):
        tenant = create_tenant(db_session, TenantCreate(name="Del", slug="del", business_type_id=bt.id, plan_id=plan.id))
        delete_tenant(db_session, tenant.id)
        assert tenant.deleted_at is not None

    def test_assign_user(self, db_session: Session, bt, plan):
        tenant = create_tenant(db_session, TenantCreate(name="T", slug="t", business_type_id=bt.id, plan_id=plan.id))
        user = User(email="u@ex.com", username="u", password="x")
        db_session.add(user)
        db_session.commit()

        result = assign_user_to_tenant(db_session, tenant.id, user.id)
        assert result["message"] == "User assigned to tenant"
        assert user.tenant_id == tenant.id
        assert user.status == "ACTIVE"

    def test_assign_user_tenant_not_found(self, db_session: Session):
        with pytest.raises(HTTPException) as exc:
            assign_user_to_tenant(db_session, "x", "y")
        assert exc.value.status_code == 404


class TestAPI:
    def test_create(self, client: TestClient, db_session: Session, bt, plan):
        resp = client.post("/v1/tenants/", json={
            "name": "Toko", "slug": "toko",
            "business_type_id": bt.id, "plan_id": plan.id,
        })
        assert resp.status_code == 201

    def test_list(self, client: TestClient, db_session: Session, bt):
        db_session.add(Tenant(name="T", slug="t", business_type_id=bt.id))
        db_session.commit()
        resp = client.get("/v1/tenants/")
        assert resp.status_code == 200

    def test_not_found(self, client: TestClient):
        resp = client.get("/v1/tenants/x")
        assert resp.status_code == 404

    def test_delete(self, client: TestClient, db_session: Session, bt, plan):
        from app.models.subscription import Subscription
        tenant = Tenant(name="D", slug="d", business_type_id=bt.id)
        db_session.add(tenant)
        db_session.flush()
        db_session.add(Subscription(tenant_id=tenant.id, plan_id=plan.id))
        db_session.commit()
        resp = client.delete(f"/v1/tenants/{tenant.id}")
        assert resp.status_code == 204

    def test_assign_user(self, client: TestClient, db_session: Session, bt, plan):
        tenant = Tenant(name="A", slug="a", business_type_id=bt.id)
        db_session.add(tenant)
        user = User(email="assign@ex.com", username="assign", password="x")
        db_session.add(user)
        db_session.commit()
        resp = client.post(f"/v1/tenants/{tenant.id}/assign-user?user_id={user.id}")
        assert resp.status_code == 200
        assert resp.json()["message"] == "User assigned to tenant"