"""
Pytest fixtures för LandveX Admin Backend.
"""
import asyncio
import os
import uuid
from datetime import datetime, timezone

import pytest
import pytest_asyncio
from httpx import AsyncClient, ASGITransport
from sqlalchemy.ext.asyncio import create_async_engine, AsyncSession, async_sessionmaker

os.environ.setdefault("DATABASE_URL", "postgresql+asyncpg://postgres:postgres@localhost:5432/landvex_test")
os.environ.setdefault("SECRET_KEY", "test-secret-key-landvex-2026")

from app.main import app
from app.database import Base, get_db
from app.models import Tenant, User, UserRole, UserStatus, TenantType, TenantStatus
from app.security import get_password_hash


TEST_DATABASE_URL = os.environ["DATABASE_URL"]

engine = create_async_engine(
    TEST_DATABASE_URL,
    pool_pre_ping=True,
    future=True,
)

TestSessionLocal = async_sessionmaker(
    engine,
    class_=AsyncSession,
    expire_on_commit=False,
    autoflush=False,
)


async def override_get_db():
    async with TestSessionLocal() as session:
        try:
            yield session
            await session.commit()
        except Exception:
            await session.rollback()
            raise
        finally:
            await session.close()


app.dependency_overrides[get_db] = override_get_db


@pytest_asyncio.fixture(scope="session")
def event_loop():
    loop = asyncio.get_event_loop_policy().new_event_loop()
    yield loop
    loop.close()


@pytest_asyncio.fixture(scope="session", autouse=True)
async def setup_database():
    """Skapa och tömma test-databasen."""
    async with engine.begin() as conn:
        await conn.run_sync(Base.metadata.drop_all)
        await conn.run_sync(Base.metadata.create_all)
    yield
    async with engine.begin() as conn:
        await conn.run_sync(Base.metadata.drop_all)
    await engine.dispose()


@pytest_asyncio.fixture
async def db_session():
    """Skapa en färsk session per test."""
    async with TestSessionLocal() as session:
        yield session
        await session.rollback()


@pytest_asyncio.fixture
async def client():
    """Async HTTP client för API-tester."""
    transport = ASGITransport(app=app)
    async with AsyncClient(transport=transport, base_url="http://test") as ac:
        yield ac


@pytest_asyncio.fixture
async def test_tenant(db_session: AsyncSession):
    """Skapa en test-tenant."""
    tenant = Tenant(
        id=uuid.uuid4(),
        name="Test Municipality",
        slug="test-municipality",
        tenant_type=TenantType.MUNICIPALITY,
        status=TenantStatus.ACTIVE,
        schema_name="tenant_test_municipality",
        contact_email="test@kommun.se",
        city="Stockholm",
        country="SE",
        plan="basic",
        max_users=10,
        max_projects=5,
        storage_quota_mb=1024,
        created_at=datetime.now(timezone.utc),
        updated_at=datetime.now(timezone.utc),
    )
    db_session.add(tenant)
    await db_session.commit()
    await db_session.refresh(tenant)
    return tenant


@pytest_asyncio.fixture
async def admin_user(db_session: AsyncSession, test_tenant):
    """Skapa en admin-användare."""
    user = User(
        id=uuid.uuid4(),
        email="admin@landvex.se",
        hashed_password=get_password_hash("Admin123!"),
        first_name="Admin",
        last_name="User",
        role=UserRole.ADMIN,
        status=UserStatus.ACTIVE,
        is_superuser=True,
        tenant_id=test_tenant.id,
        created_at=datetime.now(timezone.utc),
        updated_at=datetime.now(timezone.utc),
    )
    db_session.add(user)
    await db_session.commit()
    await db_session.refresh(user)
    return user


@pytest_asyncio.fixture
async def admin_token(admin_user):
    """Generera JWT-token för admin."""
    from app.security import create_access_token
    return create_access_token(str(admin_user.id))


@pytest_asyncio.fixture
async def auth_headers(admin_token):
    """Headers med Bearer-token för autentiserade requests."""
    return {"Authorization": f"Bearer {admin_token}"}