import asyncio
import os
import shutil
import tempfile
import uuid
from collections.abc import Iterator
from pathlib import Path

import pytest
from fastapi.testclient import TestClient


TEST_ID = uuid.uuid4().hex
TEST_DB = Path(tempfile.gettempdir()) / f"opencloud-{TEST_ID}.sqlite3"
TEST_UPLOADS = Path(tempfile.gettempdir()) / f"opencloud-{TEST_ID}-uploads"

os.environ["ENVIRONMENT"] = "test"
os.environ["DATABASE_URL"] = f"sqlite+aiosqlite:///{TEST_DB}"
os.environ["SECRET_KEY"] = "test-secret-key-that-is-long-enough-for-opencloud"
os.environ["PUBLIC_BASE_URL"] = "http://testserver"
os.environ["FRONTEND_URL"] = "http://testserver"
os.environ["CORS_ORIGINS"] = "http://testserver"
os.environ["UPLOAD_DIR"] = str(TEST_UPLOADS)
os.environ["EMAIL_DELIVERY_MODE"] = "console"
os.environ["ADMIN_EMAIL"] = "admin@example.com"
os.environ["ADMIN_PASSWORD"] = "admin-password-123"
os.environ["ADMIN_USERNAME"] = "测试管理员"

from app.database import Base, engine  # noqa: E402
from app.main import app  # noqa: E402
from app.seed import seed  # noqa: E402


async def _prepare_database() -> None:
    async with engine.begin() as connection:
        await connection.run_sync(Base.metadata.create_all)
    await seed()


async def _close_database() -> None:
    await engine.dispose()


@pytest.fixture(scope="session")
def client() -> Iterator[TestClient]:
    asyncio.run(_prepare_database())
    with TestClient(app) as test_client:
        yield test_client
    asyncio.run(_close_database())
    TEST_DB.unlink(missing_ok=True)
    shutil.rmtree(TEST_UPLOADS, ignore_errors=True)