import { formatRelativeAge, formatTimestamp } from '@/utils/format'

function formatSource(source?: string | null): string {
  switch (source) {
    case 'token-aggregation':
      return 'token aggregation API'
    case 'blockscout':
      return 'Blockscout index'
    case 'derived':
      return 'derived from indexed supply and price inputs'
    case 'mission-control':
      return 'mission-control liquidity inventory'
    default:
      return source || 'source unavailable'
  }
}

export default function MarketEvidenceNote({
  source = 'token-aggregation',
  lastUpdated,
  method = 'DEX route and pool aggregation; visible liquidity only where indexed.',
  compact = false,
}: {
  source?: string | null
  lastUpdated?: string | null
  method?: string
  compact?: boolean
}) {
  const freshness = lastUpdated ? `${formatRelativeAge(lastUpdated)} (${formatTimestamp(lastUpdated)})` : 'timestamp unavailable'
  const text = compact
    ? `Updated ${freshness} · ${formatSource(source)}`
    : `Source: ${formatSource(source)}. Updated: ${freshness}. Method: ${method}`

  return (
    <p className={`${compact ? 'mt-1' : 'mt-3'} text-xs leading-5 text-gray-500 dark:text-gray-400`}>
      {text}
    </p>
  )
}