const ONE_DAY_MS = 24 * 60 * 60 * 1000;

const BLOCKING_CLASSIFICATIONS = new Set([
  'WAITING_REQUESTER', 'WAITING_VENDOR', 'SCHEDULED', 'DEPENDENCY_BLOCKED',
]);

function isCriticalOverride(ticket) {
  return Boolean(ticket.sla_vencido) && Number(ticket.prioridade) >= 4;
}

function computeCooldown({ ticket, classification, contextChanged, memory, now, config }) {
  const consecutiveDaysSent = memory ? Number(memory.consecutive_days_sent || 0) : 0;
  const lastSentAt = memory ? memory.last_sent_at : null;
  const nextReviewAt = memory ? memory.next_review_at : null;
  const critical = isCriticalOverride(ticket);

  let blocked = false;
  let penalty = 0;
  let reason = 'ok';
  let breakCooldown = false;

  if (classification === 'NEEDS_COORDINATION') {
    blocked = true;
    reason = 'needs_coordination';
  } else if (nextReviewAt != null && now < nextReviewAt && !contextChanged) {
    blocked = true;
    reason = 'waiting_next_review';
  } else if (BLOCKING_CLASSIFICATIONS.has(classification) && !contextChanged) {
    blocked = true;
    reason = `blocked_${classification.toLowerCase()}`;
  }

  const sentRecently = lastSentAt != null && (now - lastSentAt) < ONE_DAY_MS * 1.5;
  if (!contextChanged && sentRecently && consecutiveDaysSent > 0) {
    const perDayBase = classification === 'ACTIONABLE_NOW' || classification === 'UNASSIGNED_ACTIONABLE' ? 10 : 15;
    penalty = Math.min(90, perDayBase * consecutiveDaysSent);
    if (!blocked) reason = 'repeat_no_change';
  }

  if (blocked && critical && classification !== 'NEEDS_COORDINATION') {
    breakCooldown = true;
    blocked = false;
    penalty = Math.round(penalty / 2);
    reason = `${reason}_override_critical`;
  }

  return { blocked, penalty, reason, breakCooldown, consecutiveDaysSent };
}

module.exports = { computeCooldown, isCriticalOverride, BLOCKING_CLASSIFICATIONS };