meet/src/frontend/src/features/rooms/utils/isRoomValid.ts

export const roomIdPattern = '[a-z]{3}-[a-z]{4}-[a-z]{3}'

// Case-insensitive and with optional hyphens
export const flexibleRoomIdPattern =
  '(?:[a-zA-Z0-9]{3}-?[a-zA-Z0-9]{4}-?[a-zA-Z0-9]{3})'

const roomRegex = new RegExp(`^${roomIdPattern}$`)
const roomWithoutHyphensRegex = /^[a-z]{10}$/

export const isRoomValid = (roomIdOrUrl: string) => {
  const lower = roomIdOrUrl.toLowerCase()
  return (
    roomRegex.test(lower) ||
    roomWithoutHyphensRegex.test(lower) ||
    new RegExp(`^${window.location.origin}/${roomIdPattern}`).test(roomIdOrUrl)
  )
}

export const normalizeRoomId = (roomId: string) => {
  const cleanId = roomId.toLowerCase().replace(/-/g, '')
  if (cleanId.length === 10) {
    return `${cleanId.slice(0, 3)}-${cleanId.slice(3, 7)}-${cleanId.slice(7, 10)}`
  }
  return roomId
}