DOMAIN = "fontawesome"

DATA_EXTRA_MODULE_URL = 'frontend_extra_module_url'
ICONS_URL = f'/{DOMAIN}/'
ICON_FILES = {
    'regular': 'far.js',
    'solid': 'fas.js',
    'brands': 'fab.js',
}


async def async_setup(hass, config):
    for f in ICON_FILES.values():
        hass.http.register_static_path(
            f"/{DOMAIN}/{f}",
            hass.config.path(f"custom_components/{DOMAIN}/data/{f}"),
            True
        )
    conf = config.get(DOMAIN)
    if not conf:
        return True
    register_modules(hass, conf)
    return True


async def async_setup_entry(hass, config_entry):
    config_entry.add_update_listener(_update_listener)
    register_modules(hass, config_entry.options)
    return True


async def async_remove_entry(hass, config_entry):
    register_modules(hass, [])
    return True


async def _update_listener(hass, config_entry):
    register_modules(hass, config_entry.options)
    return True


def register_modules(hass, modules):
    if DATA_EXTRA_MODULE_URL not in hass.data:
        hass.data[DATA_EXTRA_MODULE_URL] = set()
    url_set = hass.data[DATA_EXTRA_MODULE_URL]

    for k, v in ICON_FILES.items():
        url_set.discard(ICONS_URL+v)
        if k in modules and modules[k] is not False:
            url_set.add(ICONS_URL+v)