export type DoshObligation = {
  requires_jkkp6: boolean
  requires_jkkp7: boolean
  requires_jkkp8: boolean
  requires_immediate_notification: boolean
  reasons: string[]
}

export function computeDoshObligation(incident: {
  is_fatality: boolean
  is_serious_bodily_injury: boolean
  is_dangerous_occurrence: boolean
  is_occupational_disease: boolean
  lost_days: number | null
}): DoshObligation {
  const reasons: string[] = []
  let requires_jkkp6 = false
  let requires_jkkp7 = false
  let requires_jkkp8 = false
  let requires_immediate_notification = false

  if (incident.is_fatality) {
    reasons.push('Fatality — NADOPOD 2004 s.9(1)(a)')
    requires_jkkp6 = true
    requires_jkkp7 = true
    requires_immediate_notification = true
  }
  if (incident.is_serious_bodily_injury) {
    reasons.push('Serious bodily injury — NADOPOD 2004 s.9(1)(b)')
    requires_jkkp6 = true
    requires_jkkp7 = true
  }
  if (incident.is_dangerous_occurrence) {
    reasons.push('Dangerous occurrence — NADOPOD 2004 s.9(1)(c)')
    requires_jkkp6 = true
    requires_jkkp7 = true
  }
  if ((incident.lost_days ?? 0) >= 4) {
    reasons.push('Lost-time injury ≥4 days — NADOPOD 2004 s.9(1)(d)')
    requires_jkkp6 = true
    requires_jkkp7 = true
  }
  if (incident.is_occupational_disease) {
    reasons.push('Occupational disease — NADOPOD 2004 s.11')
    requires_jkkp8 = true
  }

  return { requires_jkkp6, requires_jkkp7, requires_jkkp8, requires_immediate_notification, reasons }
}