"""HTTP /health endpoint tests (ARTIFACT-STORE-WP-0001-T014)."""

from __future__ import annotations

from pathlib import Path

import pytest
from fastapi.testclient import TestClient
from sqlalchemy import create_engine, insert

from artifactstore.api.http import create_app
from artifactstore.config import Settings
from artifactstore.db.schema import metadata, retention_classes
from artifactstore.db.seed import RETENTION_CLASS_SEEDS


@pytest.fixture
def settings(tmp_path: Path) -> Settings:
    db_path = tmp_path / "http-test.db"
    storage_root = tmp_path / "storage"
    storage_root.mkdir(parents=True, exist_ok=True)
    # Build a fresh schema synchronously so the app starts against a
    # ready-to-use database.
    sync_engine = create_engine(f"sqlite:///{db_path}", future=True)
    metadata.create_all(sync_engine)
    with sync_engine.begin() as conn:
        conn.execute(insert(retention_classes), [dict(s) for s in RETENTION_CLASS_SEEDS])
    sync_engine.dispose()
    return Settings(
        database_url=f"sqlite+aiosqlite:///{db_path}",
        storage_local_root=str(storage_root),
        log_level="INFO",
    )


def test_root_route_returns_banner(settings: Settings) -> None:
    app = create_app(settings)
    with TestClient(app) as client:
        resp = client.get("/")
    assert resp.status_code == 200
    body = resp.json()
    assert body["service"] == "artifact-store"
    assert body["status"] == "scaffold"


def test_health_endpoint_reports_db_and_backend(settings: Settings) -> None:
    app = create_app(settings)
    with TestClient(app) as client:
        resp = client.get("/health")
    assert resp.status_code == 200
    body = resp.json()
    assert body["status"] == "ok"
    assert body["db"]["healthy"] is True
    assert body["db"]["detail"] == "ok"
    assert body["backend"]["healthy"] is True
    assert body["backend"]["backend_id"] == "local"
    assert body["backend"]["free_bytes"] is not None


# NB: a "degraded backend" path test was considered but the LocalBackend
# constructor recreates its root in mkdir(parents=True, exist_ok=True) when
# the lifespan instantiates it. The unhealthy-root branch is covered
# directly in tests/unit/test_storage_local.py without that re-creation.