"""Smoke tests for openapi_first.loader."""

import pytest

from openapi_first.loader import OpenAPISpecLoadError, load_openapi


def test_load_openapi_json(spec_file, minimal_spec):
    path = spec_file("openapi.json")
    spec = load_openapi(path)
    assert spec == minimal_spec


def test_load_openapi_yaml(spec_file, minimal_spec):
    path = spec_file("openapi.yaml")
    spec = load_openapi(path)
    assert spec == minimal_spec


def test_load_missing_file(tmp_path):
    with pytest.raises(OpenAPISpecLoadError):
        load_openapi(tmp_path / "missing.json")


def test_load_unsupported_extension(tmp_path):
    path = tmp_path / "openapi.txt"
    path.write_text("{}", encoding="utf-8")
    with pytest.raises(OpenAPISpecLoadError):
        load_openapi(path)


def test_load_invalid_spec(tmp_path):
    path = tmp_path / "invalid.yaml"
    path.write_text("not: [valid: openapi", encoding="utf-8")
    with pytest.raises(OpenAPISpecLoadError):
        load_openapi(path)


def test_load_validation_failure(tmp_path):
    path = tmp_path / "bad.yaml"
    path.write_text("openapi: 3.0.3\ninfo: {}\n", encoding="utf-8")
    with pytest.raises(OpenAPISpecLoadError):
        load_openapi(path)


def test_env_var_resolution(spec_file, monkeypatch):
    monkeypatch.setenv("AUTH_HOST", "http://auth.internal")
    spec = {
        "openapi": "3.0.3",
        "info": {"title": "Env API", "version": "1.0.0"},
        "servers": [{"url": "{AUTH_HOST}/v1"}],
        "paths": {
            "/ping": {
                "get": {
                    "operationId": "get_ping",
                    "responses": {"200": {"description": "OK"}},
                }
            }
        },
    }
    path = spec_file("env.yaml", spec)
    loaded = load_openapi(path)
    assert loaded["servers"][0]["url"] == "{AUTH_HOST}/v1"