from pathlib import Path
from unittest.mock import patch
import os
import tomllib

from whisper_local.config import Config, load_config


class TestConfigDefaults:
    def test_default_hotkey(self):
        config = Config()
        assert config.hotkey == "KEY_F12"

    def test_default_whisper_model(self):
        config = Config()
        assert config.whisper_model == "small"

    def test_default_language(self):
        config = Config()
        assert config.language == "de"

    def test_default_compute_type(self):
        config = Config()
        assert config.compute_type == "int8"

    def test_default_sample_rate(self):
        config = Config()
        assert config.sample_rate == 16000

    def test_default_channels(self):
        config = Config()
        assert config.channels == 1

    def test_default_min_duration(self):
        config = Config()
        assert config.min_duration == 0.5


class TestLoadConfig:
    def test_load_from_toml(self, tmp_path):
        config_file = tmp_path / "config.toml"
        config_file.write_text(
            '[hotkey]\nkey = "KEY_F8"\n\n'
            '[whisper]\nmodel = "tiny"\nlanguage = "en"\n'
        )
        config = load_config(config_file)
        assert config.hotkey == "KEY_F8"
        assert config.whisper_model == "tiny"
        assert config.language == "en"
        # Defaults bleiben erhalten
        assert config.compute_type == "int8"

    def test_load_nonexistent_returns_defaults(self, tmp_path):
        config = load_config(tmp_path / "nope.toml")
        assert config.hotkey == "KEY_F12"

    def test_load_empty_file(self, tmp_path):
        config_file = tmp_path / "config.toml"
        config_file.write_text("")
        config = load_config(config_file)
        assert config.hotkey == "KEY_F12"


class TestConfigPath:
    @patch.dict(os.environ, {"APPDATA": "C:\\Users\\test\\AppData\\Roaming"})
    @patch("whisper_local.config.sys")
    def test_windows_config_path(self, mock_sys):
        mock_sys.platform = "win32"
        from whisper_local.config import _default_config_path
        result = _default_config_path()
        assert result == Path("C:\\Users\\test\\AppData\\Roaming") / "whisper-local" / "config.toml"

    @patch("whisper_local.config.sys")
    def test_linux_config_path(self, mock_sys):
        mock_sys.platform = "linux"
        from whisper_local.config import _default_config_path
        result = _default_config_path()
        assert result == Path.home() / ".config" / "whisper-local" / "config.toml"


class TestMicrophoneConfig:
    def test_default_microphone_is_empty(self):
        config = Config()
        assert config.microphone == ""

    def test_load_device_from_toml(self, tmp_path):
        config_file = tmp_path / "config.toml"
        config_file.write_text('[audio]\ndevice = "Headset Mic"\n')
        config = load_config(config_file)
        assert config.microphone == "Headset Mic"


class TestSaveConfig:
    def test_save_and_reload(self, tmp_path):
        from whisper_local.config import save_config
        path = tmp_path / "config.toml"
        config = Config(hotkey="KEY_F8", microphone="USB Mic")
        save_config(config, path)
        loaded = load_config(path)
        assert loaded.hotkey == "KEY_F8"
        assert loaded.microphone == "USB Mic"

    def test_save_creates_parent_dirs(self, tmp_path):
        from whisper_local.config import save_config
        path = tmp_path / "subdir" / "config.toml"
        save_config(Config(), path)
        assert path.exists()

    def test_save_handles_special_characters_in_microphone(self, tmp_path):
        from whisper_local.config import save_config
        path = tmp_path / "config.toml"
        config = Config(microphone='USB "Pro" Mic')
        save_config(config, path)
        loaded = load_config(path)
        assert loaded.microphone == 'USB "Pro" Mic'