# sn_basis/functions/ly_style_wrapper.py

from sn_basis.functions.ly_existence_wrapper import layer_exists
from sn_basis.functions.sys_wrapper import (
    get_plugin_root,
    join_path,
    file_exists,
)


def apply_style(layer, style_name: str) -> bool:
    if not layer_exists(layer):
        return False

    style_path = join_path(get_plugin_root(), "styles", style_name)
    if not file_exists(style_path):
        return False

    try:
        ok, _ = layer.loadNamedStyle(style_path)
        if ok:
            getattr(layer, "triggerRepaint", lambda: None)()
            return True
    except Exception:
        pass

    return False