feat: enhance flextime tracking with future days count and tooltip hints

public/js/main.js

@@ -1352,6 +1352,8 @@ async function updateStatistics(entries) {
       .map(e => e.date)
   );
   
+  let futureFlextimeDays = 0; // Count future flextime days in current month
+  
   for (let day = 1; day <= lastDay; day++) {
     const dateObj = new Date(currentYear, currentMonth, day);
     const year = dateObj.getFullYear();
@@ -1363,13 +1365,26 @@ async function updateStatistics(entries) {
     const isFlextime = flextimeDays.has(dateISO);
     const isWeekendHoliday = isWeekendOrHoliday(dateObj);
     
-    if (!isWeekendHoliday && !isVacation) {
-      // Normal workday (excluding vacation days)
+    if (!isWeekendHoliday && !isVacation && !isFlextime) {
+      // Normal workday (excluding vacation and flextime days)
       totalWorkdaysInMonth++;
       workdaysCount++;
       if (dateObj <= today) {
         workdaysPassed++;
       }
+    } else if (!isWeekendHoliday && !isVacation && isFlextime) {
+      // Flextime on a workday - still counts as workday in calendar
+      totalWorkdaysInMonth++;
+      workdaysCount++;
+      if (dateObj <= today) {
+        workdaysPassed++;
+      } else {
+        // Future flextime in current month
+        const isCurrentMonth = currentYear === today.getFullYear() && currentMonth === today.getMonth();
+        if (isCurrentMonth) {
+          futureFlextimeDays++;
+        }
+      }
     } else if (isFlextime && isWeekendHoliday) {
       // Flextime on weekend/holiday counts as additional workday
       totalWorkdaysInMonth++;
@@ -1380,7 +1395,7 @@ async function updateStatistics(entries) {
     // Vacation days are excluded from all counts
   }
   
-  // Calculate target hours (8h per workday passed)
+  // Calculate target hours (8h per workday passed, no reduction)
   const targetHours = workdaysPassed * 8;
   
   // Calculate actual hours worked (only up to today)
@@ -1406,7 +1421,10 @@ async function updateStatistics(entries) {
   }
   
   // Calculate balance for current month
-  const balance = actualHours - targetHours;
+  let balance = actualHours - targetHours;
+  
+  // Subtract future flextime days from balance (they consume flextime)
+  balance -= (futureFlextimeDays * 8);
   
   // Calculate previous month balance
   const previousBalance = await calculatePreviousBalance();
@@ -1425,6 +1443,33 @@ async function updateStatistics(entries) {
   document.getElementById('statActualHours').textContent = actualHours.toFixed(1) + 'h';
   document.getElementById('statWorkdays').textContent = `${workEntriesCount}/${totalWorkdaysInMonth}`;
   
+  // Show/hide flextime hint icons
+  const balanceFlextimeHint = document.getElementById('balanceFlextimeHint');
+  const totalBalanceFlextimeHint = document.getElementById('totalBalanceFlextimeHint');
+  
+  if (futureFlextimeDays > 0) {
+    const tooltipText = `Inkl. ${futureFlextimeDays} geplanter Gleitzeittag${futureFlextimeDays > 1 ? 'e' : ''} (-${futureFlextimeDays * 8}h)`;
+    
+    balanceFlextimeHint.classList.remove('hidden');
+    totalBalanceFlextimeHint.classList.remove('hidden');
+    
+    // Set title attribute before re-initializing icons
+    balanceFlextimeHint.setAttribute('title', tooltipText);
+    totalBalanceFlextimeHint.setAttribute('title', tooltipText);
+    
+    // Re-initialize icons
+    if (typeof lucide !== 'undefined' && lucide.createIcons) {
+      lucide.createIcons();
+    }
+    
+    // Re-apply title after icon initialization (in case it was cleared)
+    balanceFlextimeHint.setAttribute('title', tooltipText);
+    totalBalanceFlextimeHint.setAttribute('title', tooltipText);
+  } else {
+    balanceFlextimeHint.classList.add('hidden');
+    totalBalanceFlextimeHint.classList.add('hidden');
+  }
+  
   // Current month balance
   const balanceElement = document.getElementById('statBalance');
   balanceElement.textContent = (balance >= 0 ? '+' : '') + balance.toFixed(1) + 'h';
@@ -2651,6 +2696,90 @@ async function handleBundeslandChange(event) {
   const newBundesland = event.target.value;
   const oldBundesland = currentBundesland;
   
+  // Show warning with backup recommendation
+  const bundeslandNames = {
+    'BW': 'Baden-Württemberg',
+    'BY': 'Bayern',
+    'BE': 'Berlin',
+    'BB': 'Brandenburg',
+    'HB': 'Bremen',
+    'HH': 'Hamburg',
+    'HE': 'Hessen',
+    'MV': 'Mecklenburg-Vorpommern',
+    'NI': 'Niedersachsen',
+    'NW': 'Nordrhein-Westfalen',
+    'RP': 'Rheinland-Pfalz',
+    'SL': 'Saarland',
+    'SN': 'Sachsen',
+    'ST': 'Sachsen-Anhalt',
+    'SH': 'Schleswig-Holstein',
+    'TH': 'Thüringen'
+  };
+  
+  // Create custom modal for bundesland change confirmation
+  const modalHTML = `
+    <div id="bundeslandWarningModal" class="fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center z-50" style="display: flex;">
+      <div class="bg-gray-800 rounded-xl shadow-2xl p-6 max-w-md w-full mx-4 border border-yellow-600">
+        <div class="flex items-center gap-3 mb-4">
+          <i data-lucide="alert-triangle" class="w-8 h-8 text-yellow-500"></i>
+          <h3 class="text-xl font-bold text-yellow-500">Achtung: Bundesland ändern</h3>
+        </div>
+        <div class="text-gray-300 mb-6 space-y-3">
+          <p>Sie möchten das Bundesland von <strong>${bundeslandNames[oldBundesland]}</strong> auf <strong>${bundeslandNames[newBundesland]}</strong> ändern.</p>
+          <p class="text-yellow-400"><strong>Warnung:</strong> Durch die Änderung der Feiertage können bestehende Einträge betroffen sein. An Tagen, die zu Feiertagen werden, bleiben Arbeitseinträge erhalten.</p>
+          <div class="bg-gray-900 border border-blue-600 rounded-lg p-3 mt-4">
+            <p class="text-blue-400 text-sm mb-2"><i data-lucide="info" class="w-4 h-4 inline mr-1"></i> Wir empfehlen ein Backup vor der Änderung:</p>
+            <button id="quickBackupBtn" class="w-full flex items-center justify-center gap-2 px-4 py-2 bg-blue-600 hover:bg-blue-700 text-white rounded-lg transition-colors text-sm">
+              <i data-lucide="download" class="w-4 h-4"></i>
+              Jetzt Backup erstellen
+            </button>
+          </div>
+        </div>
+        <div class="flex gap-3">
+          <button id="cancelBundeslandChange" class="flex-1 px-4 py-2 bg-gray-700 hover:bg-gray-600 text-white rounded-lg transition-colors">
+            Abbrechen
+          </button>
+          <button id="confirmBundeslandChange" class="flex-1 px-4 py-2 bg-yellow-600 hover:bg-yellow-700 text-white rounded-lg transition-colors font-semibold">
+            Trotzdem ändern
+          </button>
+        </div>
+      </div>
+    </div>
+  `;
+  
+  // Insert modal into DOM
+  const modalContainer = document.createElement('div');
+  modalContainer.innerHTML = modalHTML;
+  document.body.appendChild(modalContainer);
+  
+  // Initialize icons in modal
+  if (typeof lucide !== 'undefined' && lucide.createIcons) {
+    lucide.createIcons();
+  }
+  
+  // Handle backup button
+  document.getElementById('quickBackupBtn').addEventListener('click', async () => {
+    await exportDatabase();
+    showNotification('✓ Backup erstellt', 'success');
+  });
+  
+  // Handle cancel
+  document.getElementById('cancelBundeslandChange').addEventListener('click', () => {
+    event.target.value = oldBundesland;
+    document.getElementById('bundeslandWarningModal').remove();
+  });
+  
+  // Handle confirm
+  document.getElementById('confirmBundeslandChange').addEventListener('click', async () => {
+    document.getElementById('bundeslandWarningModal').remove();
+    await performBundeslandChange(newBundesland, oldBundesland, event);
+  });
+}
+
+/**
+ * Perform the actual bundesland change after confirmation
+ */
+async function performBundeslandChange(newBundesland, oldBundesland, event) {
   // Check for conflicts with existing entries
   const entries = await fetchEntries();
   const conflicts = [];
@@ -2689,16 +2818,12 @@ async function handleBundeslandChange(event) {
     }
   });
   
-  // Warn user if conflicts exist
+  // Show conflict info if exists
   if (conflicts.length > 0) {
     const conflictList = conflicts.map(c => `  • ${c.displayDate} (${c.holidayName})`).join('\n');
-    const message = `Achtung!\n\nDie folgenden Tage werden zu Feiertagen und haben bereits Einträge:\n\n${conflictList}\n\nMöchten Sie fortfahren? Die Einträge bleiben erhalten, aber die Tage werden als Feiertage markiert.`;
-    
-    if (!confirm(message)) {
-      // Revert selection
-      event.target.value = oldBundesland;
-      return;
-    }
+    const message = `Folgende Tage werden zu Feiertagen und haben bereits Einträge:\n\n${conflictList}\n\nDie Einträge bleiben erhalten.`;
+    showNotification(`⚠️ ${conflicts.length} Konflikt(e) gefunden`, 'warning');
+    console.info(message);
   }
   
   // Update state and save