feat: add shift management functionality

resources/js/Shared/shiftCalendarEvents.js

@@ -0,0 +1,46 @@
+const isOvernight = (shift) => shift.end_time <= shift.start_time
+
+const nextDay = (dateStr) => {
+    const date = new Date(`${dateStr}T00:00:00`)
+    date.setDate(date.getDate() + 1)
+    return date.toISOString().slice(0, 10)
+}
+
+const extendPastMidnight = (time) => {
+    const [hours, minutes] = time.split(':')
+    return `${parseInt(hours, 10) + 24}:${minutes}`
+}
+
+export function buildShiftEvent(shift, overrides = {}) {
+    const base = {
+        id: String(shift.id),
+        extendedProps: { shift },
+        ...overrides,
+    }
+
+    if (shift.date_raw) {
+        const endDate = isOvernight(shift) ? nextDay(shift.date_raw) : shift.date_raw
+        return {
+            ...base,
+            start: `${shift.date_raw}T${shift.start_time}`,
+            end: `${endDate}T${shift.end_time}`,
+        }
+    }
+
+    return {
+        ...base,
+        daysOfWeek: [shift.day_index],
+        startTime: shift.start_time,
+        endTime: isOvernight(shift) ? extendPastMidnight(shift.end_time) : shift.end_time,
+    }
+}
+
+export function formatJalaliDay(date) {
+    return new Intl.DateTimeFormat('fa-IR', { day: 'numeric', month: 'short' }).format(date)
+}
+
+export function formatJalaliRange(start, end) {
+    const formatter = new Intl.DateTimeFormat('fa-IR', { day: 'numeric', month: 'long', year: 'numeric' })
+    const inclusiveEnd = new Date(end.getTime() - 1)
+    return `${formatter.format(start)} تا ${formatter.format(inclusiveEnd)}`
+}