/**
 * Mirrors formatPartyLine in src/utils/mp-pl-plan-card.ts — keep in sync.
 * Usage: node web-admin/scripts/check-mp-pl-plan-card.mjs
 */

function formatPartyLine(supplier, buyer) {
  const s = (supplier || '').trim() || '—'
  const b = (buyer || '').trim() || '—'
  return `${s} → ${b}`
}

function assert(cond, msg) {
  if (!cond) {
    console.error(msg)
    process.exit(1)
  }
}

assert(formatPartyLine('安庆仓', '合肥某化') === '安庆仓 → 合肥某化', 'party')
assert(formatPartyLine('', null) === '— → —', 'empty')
assert(formatPartyLine('  ', undefined) === '— → —', 'whitespace')

// buildPlanCard supplier/buyer/partyLine defaults (mirrors TS || '—' + formatPartyLine)
function resolveBuyer(plan) {
  return plan.customerName || plan.destinationName || '—'
}
assert(resolveBuyer({ customerName: 'A' }) === 'A', 'buyer customer')
assert(resolveBuyer({ destinationName: 'B' }) === 'B', 'buyer destination')
assert(resolveBuyer({}) === '—', 'buyer empty')
assert(formatPartyLine(undefined, undefined) === '— → —', 'partyLine empty')

console.log('check-mp-pl-plan-card: ok')