import type { SettlementMethod } from '@/types'

const CASH_PHASE_RAW_STATUSES = new Set([
  'awaiting_cash_payment',
  'cash_invoice_issued',
  'cash_in_progress',
  'cash_payment_submitted',
  'awaiting_cash_confirmation',
])

export function settlementMethodLabel(method?: string | null): string {
  if (!method) return 'انتخاب‌نشده'
  if (method === 'check') return 'چکی'
  if (method === 'cash_check') return 'نصف نقد، نصف چکی'
  return 'نقدی'
}

export function settlementPlanLabel(
  method?: string | null,
  checkTermMonths?: number | null,
): string {
  const base = settlementMethodLabel(method)
  if ((method === 'check' || method === 'cash_check') && checkTermMonths) {
    return `${base} · چک ${checkTermMonths} ماهه`
  }
  return base
}

export function orderShowsCashActions(
  order: { settlementMethod?: SettlementMethod | null; rawStatus?: string },
): boolean {
  const method = order.settlementMethod
  if (!method) return false
  if (method === 'cash') {
    return order.rawStatus !== 'cash_confirmed'
  }
  if (method === 'cash_check') {
    return !!order.rawStatus && CASH_PHASE_RAW_STATUSES.has(order.rawStatus)
  }
  return false
}

export function orderShowsCheckActions(
  order: { settlementMethod?: SettlementMethod | null; rawStatus?: string },
): boolean {
  const method = order.settlementMethod
  if (method === 'check') return true
  if (method === 'cash_check') {
    return !!order.rawStatus && !CASH_PHASE_RAW_STATUSES.has(order.rawStatus)
  }
  return false
}