const CLASSNAME_CHAR_RE = /^[a-z0-9_*\-.]+$/;

export function getBaseClassname(classname: string): string {
	const star = classname.indexOf("*");
	return star >= 0 ? classname.substring(0, star) : classname;
}

export function getSafeClassnameStem(classname: string): string {
	return classname.replace(/\*/g, "_");
}

export function getIconFileName(classname: string): string {
	return `${getSafeClassnameStem(classname)}_icon.png`;
}

export function getSwfFileName(classname: string): string {
	return `${getBaseClassname(classname)}.swf`;
}

export function getNitroFileName(classname: string): string {
	return `${getBaseClassname(classname)}.nitro`;
}

export function normalizeClassname(raw: string): string {
	return raw.trim().toLowerCase();
}

export function isValidClassname(classname: string): boolean {
	if (!classname) return false;
	return CLASSNAME_CHAR_RE.test(classname);
}

export const LOCAL_ICON_URL_PREFIX = "/swf/dcr/hof_furni/icons/";

export function getLocalIconUrl(classname: string): string {
	return `${LOCAL_ICON_URL_PREFIX}${encodeURIComponent(getIconFileName(classname))}`;
}

export function getHabboCdnIconUrl(
	classname: string,
	revision: number,
): string {
	const base = getBaseClassname(classname);
	return `https://images.habbo.com/dcr/hof_furni/${revision}/${encodeURIComponent(base)}_icon.png`;
}