import pytest
from src.core.parser import parse_openapi_spec, load_spec_file, ParseError


@pytest.fixture
def sample_spec(tmp_path):
    spec = {
        "openapi": "3.0.0",
        "info": {
            "title": "Test API",
            "version": "1.0.0"
        },
        "paths": {
            "/users": {
                "get": {
                    "summary": "Get users",
                    "description": "Retrieve a list of users",
                    "tags": ["users"],
                    "responses": {
                        "200": {"description": "Successful response"}
                    }
                }
            }
        }
    }
    path = tmp_path / "test.json"
    path.write_text(__import__('json').dumps(spec))
    return path


def test_parse_valid_spec(sample_spec):
    result = parse_openapi_spec(str(sample_spec))
    assert result['valid'] == True
    assert result['title'] == 'Test API'
    assert result['version_num'] == '1.0.0'


def test_parse_invalid_spec(tmp_path):
    invalid = tmp_path / "invalid.json"
    invalid.write_text('{"invalid": "spec"}')
    result = parse_openapi_spec(str(invalid))
    assert result['valid'] == False
    assert 'errors' in result


def test_load_json_spec(sample_spec):
    spec = load_spec_file(str(sample_spec))
    assert spec['info']['title'] == 'Test API'


def test_load_yaml_spec(tmp_path):
    content = '''
openapi: "3.0.0"
info:
  title: Test API
  version: "1.0.0"
paths: {}
'''
    path = tmp_path / "test.yaml"
    path.write_text(content)
    spec = load_spec_file(str(path))
    assert spec['info']['title'] == 'Test API'


def test_parse_error_missing_file():
    with pytest.raises(ParseError):
        load_spec_file('/nonexistent/path.json')


def test_parse_error_unsupported_format(tmp_path):
    path = tmp_path / "test.txt"
    path.write_text('some content')
    with pytest.raises(ParseError):
        load_spec_file(str(path))