Class PreferenceManager

src/mcp_cli/utils/preferences.py:188–720

Manages MCP CLI preferences with file persistence.

class PreferenceManager:
    """Manages MCP CLI preferences with file persistence."""

    def __init__(self, config_dir: Path | None = None):
        """Initialize preference manager.

        Args:
            config_dir: Optional custom config directory, defaults to ~/.mcp-cli
        """
        self.config_dir = config_dir or Path(DEFAULT_CONFIG_DIR).expanduser()
        self.config_dir.mkdir(parents=True, exist_ok=True)
        self.preferences_file = self.config_dir / "preferences.json"
        self.preferences = self.load_preferences()

    def load_preferences(self) -> MCPPreferences:
        """Load preferences from file or create defaults."""
        if self.preferences_file.exists():
            try:
                with open(self.preferences_file, "r") as f:
                    data = json.load(f)
                    return MCPPreferences.from_dict(data)
            except (json.JSONDecodeError, KeyError, ValueError):
                # If preferences are corrupted or invalid, backup and create new
                backup_file = self.preferences_file.with_suffix(".json.backup")
                self.preferences_file.rename(backup_file)
                return MCPPreferences()
        return MCPPreferences()

    def save_preferences(self) -> None:
        """Save preferences to file."""
        with open(self.preferences_file, "w") as f:
            json.dump(self.preferences.to_dict(), f, indent=2)

    def get_theme(self) -> str:
        """Get current theme."""
        return self.preferences.ui.theme

    def set_theme(self, theme: str) -> None:
        """Set and persist theme.

        Args:
            theme: Theme name to set

        Raises:
            ValueError: If theme is not valid
        """
        try:
            theme_enum = Theme(theme)
        except ValueError:
            valid_themes = [t.value for t in Theme]
            raise ValueError(
                f"Invalid theme: {theme}. Valid themes are: {', '.join(valid_themes)}"
            )

        self.preferences.ui.theme = theme_enum
        self.save_preferences()

    def get_verbose(self) -> bool: