refactor attendance calculations to handle multiple entry/exit times and improve time tracking accuracy

frontend/src/stores/attendanceStore.js

@@ -54,15 +54,25 @@ export const useAttendanceStore = defineStore('attendanceStore', () => {
 
     for (let d = 1; d <= daysInMonth.value; d++) {
       const dateStr = `${year.value}-${month.value.toString().padStart(2, '0')}-${d.toString().padStart(2, '0')}`
-      const dayData = response.days.find((day) => day.check_in.startsWith(dateStr)) || {}
+      const dayEntries = response.days.filter((day) => day.check_in && day.check_in.startsWith(dateStr))
+
+      // Sort entries by check-in time to ensure correct order
+      dayEntries.sort((a, b) => new Date(a.check_in) - new Date(b.check_in))
+
+      const entryTimes = dayEntries.map((entry) => utils.extractTimeFromDateString(entry.check_in))
+      const exitTimes = dayEntries.map((entry) => utils.extractTimeFromDateString(entry.check_out))
+      const attendance_reason_ids = dayEntries.flatMap(
+        (entry) => entry.attendance_reason_ids || [],
+      )
+
       const isPublicHoliday = response.public_holidays.some((h) => h.date === dateStr)
-      const alert = dayData.attendance_reason_ids?.length > 0
+      const alert = attendance_reason_ids.length > 0
 
       const day = {
         dayOfMonth: d,
         dayOfWeek: utils.getDayOfWeek(dateStr),
-        entryTime: utils.extractTimeFromDateString(dayData.check_in),
-        exitTime: utils.extractTimeFromDateString(dayData.check_out),
+        entryTime: entryTimes,
+        exitTime: exitTimes,
         isSickLeave: false,
         isHolidayLeave: false,
         isPublicHoliday: isPublicHoliday,