"""Font loader - registers bundled Quicksand and Open Sans with Qt."""
import os
from PyQt6.QtGui import QFontDatabase

_ASSETS_DIR = os.path.join(os.path.dirname(__file__), "..", "..", "assets", "fonts")

_FONT_FILES = [
    "Quicksand-Regular.ttf",
    "Quicksand-Medium.ttf",
    "Quicksand-SemiBold.ttf",
    "Quicksand-Bold.ttf",
    "OpenSans-Regular.ttf",
    "OpenSans-SemiBold.ttf",
    "OpenSans-Bold.ttf",
]


def load_fonts() -> None:
    """Register all bundled fonts with QFontDatabase. Call once after QApplication is created."""
    fonts_dir = os.path.normpath(_ASSETS_DIR)
    for filename in _FONT_FILES:
        path = os.path.join(fonts_dir, filename)
        if os.path.exists(path):
            QFontDatabase.addApplicationFont(path)