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,

frontend/src/utils/utils.js

@@ -95,21 +95,34 @@ function isValidWorkDay(day) {
   return day.dayOfWeek !== 'So' && day.dayOfWeek !== 'Nd' && !day.isPublicHoliday
 }
 
-function calculateWorkedTime(entryTime, exitTime) {
-  if (!entryTime || !exitTime || typeof entryTime !== 'string' || typeof exitTime !== 'string') {
+function calculateWorkedTime(entryTimes, exitTimes) {
+  if (!entryTimes || !exitTimes || !Array.isArray(entryTimes) || !Array.isArray(exitTimes) || entryTimes.length === 0) {
     return 0
   }
+
+  let totalWorkedMinutes = 0
+  for (let i = 0; i < entryTimes.length; i++) {
+    const entryTime = entryTimes[i]
+    // Use the corresponding exit time, or skip if it doesn't exist
+    const exitTime = exitTimes[i]
+
+    if (!entryTime || !exitTime || typeof entryTime !== 'string' || typeof exitTime !== 'string') {
+      continue
+    }
+
     const [eh, em] = entryTime.split(':').map(Number)
     const [xh, xm] = exitTime.split(':').map(Number)
 
     if ([eh, em, xh, xm].some((v) => typeof v !== 'number' || isNaN(v))) {
-    return 0
+      continue
     }
 
     const start = eh * 60 + em
     const end = xh * 60 + xm
+    totalWorkedMinutes += end - start
+  }
 
-  let worked = (end - start) / 60
+  const worked = totalWorkedMinutes / 60
   return parseFloat(worked.toFixed(9))
 }
 
@@ -130,23 +143,30 @@ function floatHoursToHHMM(decimalHours) {
 }
 
 function calculateDay(day) {
-  let exitTime = day.exitTime
+  // Create a mutable copy of exit times to potentially add the current time.
+  const exitTimes = [...day.exitTime]
 
-  if (!day.exitTime || typeof day.exitTime !== 'string' || day.exitTime.trim() === '') {
-    // const now = new Date().toLocaleString('pl-PL', { timeZone: 'Europe/Warsaw' })
+  // If there's one more entry than exits, it means the user is currently clocked in.
+  if (day.entryTime.length > 0 && day.entryTime.length === day.exitTime.length + 1) {
     const now = new Date()
     const hh = String(now.getHours()).padStart(2, '0')
     const mm = String(now.getMinutes()).padStart(2, '0')
     const ss = String(now.getSeconds()).padStart(2, '0')
-    exitTime = `${hh}:${mm}:${ss}`
+    // Add the current time as the "exit" for the last entry.
+    exitTimes.push(`${hh}:${mm}:${ss}`)
   }
 
-  if (!day.entryTime || typeof day.entryTime !== 'string' || day.entryTime.trim() === '') {
+  if (day.entryTime.length === 0) {
     day.workedHours = 0
   } else {
-    day.workedHours = calculateWorkedTime(day.entryTime, exitTime) - 0.25
-    day.workedHours = parseFloat(day.workedHours.toFixed(9))
-    day.exitTime = exitTime
+    // The -0.25 for a 15-minute break seems to be a business rule.
+    // It should probably only be subtracted once per day, not per interval.
+    // Let's subtract it from the total.
+    let totalHours = calculateWorkedTime(day.entryTime, exitTimes)
+    if (totalHours > 0) {
+      totalHours -= 0.25
+    }
+    day.workedHours = parseFloat(totalHours.toFixed(9))
   }
 
   if (isValidWorkDay(day) && !day.isHolidayLeave && !day.isSickLeave) {