export function audienceTicketUrl(_slug: string, ticketCode: string): string {
  const origin = typeof window !== 'undefined' ? window.location.origin : ''
  const code = encodeURIComponent(ticketCode)
  return `${origin}/t/${code}`
}

export function audienceCheckinUrl(slug: string, sessionId?: number | null): string {
  const origin = typeof window !== 'undefined' ? window.location.origin : ''
  const basePath = (import.meta.env.BASE_URL || '/').replace(/\/$/, '')
  const s = encodeURIComponent(slug)
  const url = `${origin}${basePath}/c/${s}/checkin`
  if (sessionId) return `${url}?session=${sessionId}`
  return url
}

export function ticketCodeSuffix(ticketCode: string): string {
  const t = ticketCode.trim()
  if (!t) return ''
  return t.slice(-4).toUpperCase()
}

export function extractTicketCode(raw: string): string {
  const t = raw.trim()
  if (!t) return ''
  const match = t.match(/\/t\/([A-Za-z0-9_-]+)/i)
  if (match?.[1]) return match[1]
  return t.replace(/\s+/g, '')
}