"""Tests that URL routing is case-insensitive.

All routes pass the incoming path through lowercase_path_middleware before
reaching the router, so any casing variant must resolve to the same handler.
"""

import pytest
from httpx import ASGITransport, AsyncClient
from sqlalchemy.ext.asyncio import AsyncSession, create_async_engine
from sqlalchemy.pool import StaticPool
from sqlmodel import SQLModel

from playlist_sync.api import app
from playlist_sync.services.database import get_session


@pytest.fixture()
async def client():
    """In-memory SQLite client — no Docker needed."""
    engine = create_async_engine(
        "sqlite+aiosqlite:///:memory:",
        connect_args={"check_same_thread": False},
        poolclass=StaticPool,
    )
    async with engine.begin() as conn:
        await conn.run_sync(SQLModel.metadata.create_all)

    async def override_get_session():
        async with AsyncSession(engine) as session:
            yield session

    app.dependency_overrides[get_session] = override_get_session
    async with AsyncClient(
        transport=ASGITransport(app=app), base_url="http://test"
    ) as ac:
        yield ac
    app.dependency_overrides.clear()
    await engine.dispose()


async def test_health_lowercase(client):
    """Canonical lowercase path routes to the health handler (not 404)."""
    response = await client.get("/health")
    # 200 = healthy, 503 = degraded (Redis not running) — either means routing worked
    assert response.status_code in (200, 503)


async def test_health_uppercase(client):
    """/HEALTH must resolve to the same handler as /health (not 404)."""
    response = await client.get("/HEALTH")
    assert response.status_code in (200, 503)


async def test_health_mixed_case(client):
    """/Health must resolve to the same handler as /health (not 404)."""
    response = await client.get("/Health")
    assert response.status_code in (200, 503)


async def test_playlistsync_all_lowercase(client):
    """All-lowercase variant works."""
    response = await client.get("/playlistsync/playlists")
    # No auth configured in tests — expect 200, not 404
    assert response.status_code == 200


async def test_playlistsync_original_casing(client):
    """/PlaylistSync/playlists (original .NET casing) still works."""
    response = await client.get("/PlaylistSync/playlists")
    assert response.status_code == 200


async def test_playlistsync_all_uppercase(client):
    """/PLAYLISTSYNC/PLAYLISTS must not return 404."""
    response = await client.get("/PLAYLISTSYNC/PLAYLISTS")
    assert response.status_code == 200


async def test_serviceaccounts_original_casing(client):
    """/serviceAccounts (original casing) still works."""
    response = await client.get("/serviceAccounts")
    assert response.status_code == 200


async def test_serviceaccounts_all_lowercase(client):
    """/serviceaccounts (fully lowercase) works."""
    response = await client.get("/serviceaccounts")
    assert response.status_code == 200


async def test_serviceaccounts_all_uppercase(client):
    """/SERVICEACCOUNTS must not return 404."""
    response = await client.get("/SERVICEACCOUNTS")
    assert response.status_code == 200


async def test_unknown_path_still_404(client):
    """A genuinely unknown path still returns 404 (sanity check)."""
    response = await client.get("/this-route-does-not-exist")
    assert response.status_code == 404