feat : modification de la gestion des jours fériés

frontend/utils/contract.ts

@@ -19,3 +19,43 @@ export const requiresContractEndDate = (nature: ContractNature) => {
 export const isContractNature = (value: string): value is ContractNature => {
   return (CONTRACT_NATURES as readonly string[]).includes(value)
 }
+
+/**
+ * Whether a contract + nature pair requires the per-day schedule (workDaysHours).
+ * Mirrors EmployeeContractPeriodValidator::assertWorkDaysHours on the backend.
+ */
+export const requiresWorkDaysHours = (
+  contract: { trackingMode?: string | null; weeklyHours?: number | null } | null | undefined,
+  nature: ContractNature
+): boolean => {
+  if (!contract) return false
+  if (nature === 'INTERIM') return false
+  if (contract.trackingMode === 'PRESENCE') return false
+  if (contract.weeklyHours === 35 || contract.weeklyHours === 39) return false
+  return true
+}
+
+const DAY_SHORT_LABELS: Record<number, string> = { 1: 'Lun', 2: 'Mar', 3: 'Mer', 4: 'Jeu', 5: 'Ven' }
+
+/**
+ * Compact human-readable summary of a per-day schedule, e.g. "Lun 2h, Jeu 2h".
+ * Returns null when the schedule is empty/unset.
+ */
+export const formatWorkDaysHoursSummary = (
+  workDaysHours: Record<number, number> | null | undefined
+): string | null => {
+  if (!workDaysHours) return null
+  const entries = Object.entries(workDaysHours)
+    .map(([iso, minutes]) => [Number(iso), Number(minutes)] as const)
+    .filter(([iso, minutes]) => iso >= 1 && iso <= 5 && minutes > 0)
+    .sort(([a], [b]) => a - b)
+  if (entries.length === 0) return null
+  return entries
+    .map(([iso, minutes]) => {
+      const h = Math.floor(minutes / 60)
+      const m = minutes % 60
+      const suffix = m === 0 ? `${h}h` : `${h}h${String(m).padStart(2, '0')}`
+      return `${DAY_SHORT_LABELS[iso]} ${suffix}`
+    })
+    .join(', ')
+}