"""Tests for T01 — REST service foundation (FR-900 core)."""

from __future__ import annotations

import pytest
from fastapi.testclient import TestClient

from markidocx import __version__
from markidocx.manifest import SUPPORTED_FAMILIES, FeatureLevel
from markidocx.rest import create_app


@pytest.fixture()
def client() -> TestClient:
    return TestClient(create_app())


# ---------------------------------------------------------------------------
# GET /health (FR-910)
# ---------------------------------------------------------------------------


def test_health_returns_200(client: TestClient) -> None:
    resp = client.get("/health")
    assert resp.status_code == 200


def test_health_body(client: TestClient) -> None:
    body = client.get("/health").json()
    assert body["status"] == "ok"
    assert body["version"] == __version__


# ---------------------------------------------------------------------------
# GET /version (FR-911)
# ---------------------------------------------------------------------------


def test_version_returns_200(client: TestClient) -> None:
    assert client.get("/version").status_code == 200


def test_version_envelope(client: TestClient) -> None:
    body = client.get("/version").json()
    assert body["status"] == "ok"
    assert body["outputs"]["version"] == __version__
    assert "warnings" in body
    assert "errors" in body
    assert "context" in body


# ---------------------------------------------------------------------------
# GET /capabilities (FR-909)
# ---------------------------------------------------------------------------


def test_capabilities_returns_200(client: TestClient) -> None:
    assert client.get("/capabilities").status_code == 200


def test_capabilities_feature_levels(client: TestClient) -> None:
    body = client.get("/capabilities").json()
    assert body["status"] == "ok"
    levels = body["outputs"]["feature_levels"]
    for level in FeatureLevel:
        assert level.value in levels


def test_capabilities_families(client: TestClient) -> None:
    body = client.get("/capabilities").json()
    families = body["outputs"]["families"]
    for family in SUPPORTED_FAMILIES:
        assert family in families


def test_capabilities_has_context(client: TestClient) -> None:
    body = client.get("/capabilities").json()
    assert "version" in body["context"]


# ---------------------------------------------------------------------------
# GET /templates (FR-906)
# ---------------------------------------------------------------------------


def test_templates_returns_200(client: TestClient) -> None:
    assert client.get("/templates").status_code == 200


def test_templates_lists_built_ins(client: TestClient) -> None:
    body = client.get("/templates").json()
    assert body["status"] == "ok"
    names = {f["name"] for f in body["outputs"]}
    assert "article" in names
    assert "book" in names
    assert "website" in names


def test_templates_envelope_shape(client: TestClient) -> None:
    body = client.get("/templates").json()
    assert "warnings" in body
    assert "errors" in body
    assert "context" in body


# ---------------------------------------------------------------------------
# GET /styles (FR-907)
# ---------------------------------------------------------------------------


def test_styles_returns_200(client: TestClient) -> None:
    assert client.get("/styles").status_code == 200


def test_styles_is_list(client: TestClient) -> None:
    body = client.get("/styles").json()
    assert body["status"] == "ok"
    assert isinstance(body["outputs"], list)


# ---------------------------------------------------------------------------
# Response envelope shape (FR-912)
# ---------------------------------------------------------------------------


@pytest.mark.parametrize("endpoint", ["/version", "/capabilities", "/templates", "/styles"])
def test_envelope_fields_present(client: TestClient, endpoint: str) -> None:
    body = client.get(endpoint).json()
    assert "status" in body
    assert "outputs" in body
    assert "warnings" in body
    assert "errors" in body
    assert "context" in body