"""Utility functions for AMZN Character Tools."""
import bpy


def get_addon_preferences():
    """Get the addon preferences, finding the correct addon identifier automatically.
    
    Returns:
        The addon preferences object, or None if not found.
    """
    # Try common identifiers first
    test_names = [
        "bl_ext.vscode_development.AmazonCharacterTools",  # Extension format
        "amzncharactertools",  # Manifest ID
        "AmazonCharacterTools",  # Module name
    ]
    
    for addon_name in test_names:
        addon_prefs = bpy.context.preferences.addons.get(addon_name)
        if addon_prefs and hasattr(addon_prefs, 'preferences'):
            # Verify it's our preferences class
            if hasattr(addon_prefs.preferences, 'amzn_bsdf_materials_path'):
                return addon_prefs.preferences
    
    # If not found, search all addons for one with our preferences
    for addon_name in bpy.context.preferences.addons.keys():
        addon_prefs = bpy.context.preferences.addons.get(addon_name)
        if addon_prefs and hasattr(addon_prefs, 'preferences'):
            if hasattr(addon_prefs.preferences, 'amzn_bsdf_materials_path'):
                return addon_prefs.preferences
    
    return None