"""Tests for YAML converter."""

import pytest
import tempfile
import os
import yaml

from config_convert.converters import YAMLConverter


class TestYAMLConverter:
    @pytest.fixture
    def converter(self):
        return YAMLConverter()

    def test_loads_valid_yaml(self, converter):
        data = "name: test\nvalue: 123"
        result = converter.loads(data)
        assert result == {"name": "test", "value": 123}

    def test_loads_nested_yaml(self, converter):
        data = """database:
  host: localhost
  port: 5432
"""
        result = converter.loads(data)
        assert result == {"database": {"host": "localhost", "port": 5432}}

    def test_loads_array_yaml(self, converter):
        data = "tags:\n  - a\n  - b\n  - c"
        result = converter.loads(data)
        assert result == {"tags": ["a", "b", "c"]}

    def test_loads_multiline_string(self, converter):
        data = """description: |
  This is a
  multiline string
"""
        result = converter.loads(data)
        assert result["description"] == "This is a\nmultiline string\n"

    def test_dumps_basic_dict(self, converter):
        data = {"name": "test", "value": 123}
        result = converter.dumps(data)
        assert "name: test" in result

    def test_dumps_nested_dict(self, converter):
        data = {"database": {"host": "localhost", "port": 5432}}
        result = converter.dumps(data)
        assert "host: localhost" in result

    def test_roundtrip(self, converter):
        original = {"name": "test", "version": "1.0.0", "enabled": True, "count": 42}
        dumped = converter.dumps(original)
        loaded = converter.loads(dumped)
        assert loaded == original

    def test_load_file(self, converter, temp_file, sample_yaml):
        gen = temp_file(sample_yaml, suffix=".yaml")
        path = next(gen)
        try:
            result = converter.load(path)
            assert result["name"] == "test-project"
        finally:
            os.unlink(path)

    def test_dump_file(self, converter, temp_dir, sample_yaml):
        path = tempfile.mktemp(suffix=".yaml")
        try:
            data = yaml.safe_load(sample_yaml)
            converter.dump(data, path)
            result = converter.load(path)
            assert result == data
        finally:
            if os.path.exists(path):
                os.unlink(path)

    def test_invalid_yaml_raises(self, converter):
        with pytest.raises(Exception):
            converter.loads("[invalid yaml")