import {
  SEVERITY_LEVELS,
  type WorkOrderSeverity,
} from "@/domain/work-orders/types/work-order-severity";

function isCriticalSeverity(severity: WorkOrderSeverity | null | undefined): severity is 1 | 2 {
  return severity === 1 || severity === 2;
}

/** AAP: toast only when severity newly enters SEV 1/2 — not on re-save of the same value. */
export function shouldAnnounceSeverityEscalation(
  previous: WorkOrderSeverity | null | undefined,
  next: WorkOrderSeverity | null | undefined,
): next is 1 | 2 {
  return isCriticalSeverity(next) && !isCriticalSeverity(previous);
}

export function formatSeverityEscalationToast(woNumber: string, severity: 1 | 2): string {
  return `WO #${woNumber} escalated to ${SEVERITY_LEVELS[severity].label}.`;
}