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`
}