import { phaseOf } from './config.js'

/**
 * Who is holding a lead right now, said the way the colour rule says it:
 * blue = the AI, amber = a person, teal = the customer, grey = nobody (closed).
 *
 * Derived from phaseOf, so it agrees with the sidebar tallies and the lead
 * header. `label` is the short form for a table cell: "AI · Intake",
 * "Underwriter", "Customer", "Closed".
 */
const AI_NAMES = [
  ['intake', 'Intake'], ['engage', 'Engage'], ['advisor', 'Advisor'],
  ['kyc', 'KYC'], ['voice', 'Meera'], ['rating', 'Rating'],
]

function tidy(by) {
  const s = String(by || '').replace(/^(the|an|a)\s+/i, '').trim()
  return s ? s.charAt(0).toUpperCase() + s.slice(1) : '—'
}

export function holderOf(stageDef, row) {
  if (!stageDef) return { tone: 'grey', label: '—' }
  const ph = phaseOf(stageDef, row) || stageDef
  switch (ph.kind) {
    case 'auto': {
      const by = String(ph.by || '').toLowerCase()
      const hit = AI_NAMES.find(([k]) => by.includes(k))
      return { tone: 'blue', label: 'AI · ' + (hit ? hit[1] : 'Engage') }
    }
    case 'customer': return { tone: 'teal', label: 'Customer' }
    case 'needs':    return { tone: 'amber', label: tidy(ph.by) }
    case 'waiting':  return { tone: 'grey', label: 'Calendar' }
    case 'end':      return { tone: 'grey', label: 'Closed' }
    default:         return { tone: 'grey', label: tidy(ph.by) }
  }
}