from types import SimpleNamespace
from uuid import uuid4

from fastapi.testclient import TestClient
from sqlalchemy.exc import SQLAlchemyError

from tests.conftest import build_test_app, install_stub, load_module_from_path


def _load_meta_module(monkeypatch):
    install_stub(monkeypatch, "app.auth", package=True)
    install_stub(
        monkeypatch,
        "app.auth.project_dependencies",
        {
            "ProjectContext": object,
            "get_project_context": lambda: None,
            "get_project_pg_session": lambda: None,
            "get_project_timescale_connection": lambda: None,
            "get_metadata_repository": lambda: None,
        },
    )
    install_stub(
        monkeypatch,
        "app.auth.metadata_dependencies",
        {"get_current_metadata_user": lambda: None},
    )
    return load_module_from_path(
        "tests_meta_endpoints_module",
        "app/api/v1/endpoints/meta.py",
    )


def test_meta_project_returns_map_extent(monkeypatch):
    module = _load_meta_module(monkeypatch)
    project_id = uuid4()
    repo = SimpleNamespace(
        get_project_by_id=lambda _project_id: None,
        get_geoserver_config=lambda _project_id: None,
    )

    async def get_project_by_id(_project_id):
        return SimpleNamespace(
            id=project_id,
            name="Demo Project",
            code="demo",
            description="desc",
            gs_workspace="workspace",
            map_extent={"xmin": 1, "ymin": 2, "xmax": 3, "ymax": 4},
            status="active",
        )

    async def get_geoserver_config(_project_id):
        return None

    repo.get_project_by_id = get_project_by_id
    repo.get_geoserver_config = get_geoserver_config

    app = build_test_app(module.router, "/api/v1")
    app.dependency_overrides[module.get_project_context] = lambda: SimpleNamespace(
        project_id=project_id,
        project_role="editor",
    )
    app.dependency_overrides[module.get_metadata_repository] = lambda: repo
    client = TestClient(app)

    response = client.get("/api/v1/meta/project")

    assert response.status_code == 200
    assert response.json()["map_extent"] == {"xmin": 1, "ymin": 2, "xmax": 3, "ymax": 4}


def test_meta_db_health_returns_503_for_postgres_errors(monkeypatch):
    module = _load_meta_module(monkeypatch)

    class BrokenSession:
        async def execute(self, _query):
            raise SQLAlchemyError("pg unavailable")

    class DummyTimescaleConnection:
        def cursor(self):
            raise AssertionError("timescale should not be queried after postgres failure")

    app = build_test_app(module.router, "/api/v1")
    app.dependency_overrides[module.get_project_pg_session] = lambda: BrokenSession()
    app.dependency_overrides[module.get_project_timescale_connection] = lambda: DummyTimescaleConnection()
    client = TestClient(app)

    response = client.get("/api/v1/meta/db/health")

    assert response.status_code == 503
    assert response.json()["detail"] == "Project PostgreSQL health check failed: pg unavailable"