feat: automate internship end date calculation based on business days in dashboard, Filament admin, and controller

app/Filament/Admin/Resources/CareerApplications/Schemas/CareerApplicationForm.php

@@ -99,7 +99,13 @@ class CareerApplicationForm
                         DatePicker::make('internship_start_date')
                             ->label('Staj Başlangıç Tarihi')
                             ->live()
-                            ->afterStateUpdated(fn ($state, $get, Set $set) => self::calculateTotalDays($state, $get('internship_end_date'), $set))
+                            ->afterStateUpdated(function ($state, $get, Set $set) {
+                                if ($state && $get('internship_total_days')) {
+                                    self::calculateEndDate($state, $get('internship_total_days'), $set);
+                                } elseif ($state && $get('internship_end_date')) {
+                                    self::calculateTotalDays($state, $get('internship_end_date'), $set);
+                                }
+                            })
                             ->nullable(),
                         
                         DatePicker::make('internship_end_date')
@@ -111,8 +117,8 @@ class CareerApplicationForm
                         TextInput::make('internship_total_days')
                             ->label('Toplam Staj Süresi (İş Günü)')
                             ->numeric()
-                            ->disabled()
+                            ->live()
-                            ->dehydrated()
+                            ->afterStateUpdated(fn ($state, $get, Set $set) => self::calculateEndDate($get('internship_start_date'), $state, $set))
                             ->nullable(),
                     ])
                     ->columnSpanFull(),
@@ -144,4 +150,30 @@ class CareerApplicationForm
 
         $set('internship_total_days', $days);
     }
+
+    public static function calculateEndDate($start, $totalDays, Set $set): void
+    {
+        if (!$start || !$totalDays || $totalDays <= 0) {
+            return;
+        }
+
+        $startDate = \Carbon\Carbon::parse($start);
+        $daysToAdd = intval($totalDays);
+        
+        $endDate = $startDate->copy();
+        $count = 0;
+        $temp = $startDate->copy();
+        
+        while ($count < $daysToAdd) {
+            if ($temp->isWeekend()) {
+                $temp->addDay();
+                continue;
+            }
+            $endDate = $temp->copy();
+            $temp->addDay();
+            $count++;
+        }
+        
+        $set('internship_end_date', $endDate->format('Y-m-d'));
+    }
 }

app/Http/Controllers/CareerController.php

@@ -137,7 +137,7 @@ class CareerController extends Controller
         $request->validate([
             'internship_form' => 'required|file|mimes:pdf,docx,jpg,png,jpeg|max:51200',
             'internship_start_date' => 'required|date',
-            'internship_end_date' => 'required|date|after_or_equal:internship_start_date',
+            'internship_total_days' => 'required|integer|min:1',
         ], [
             'internship_form.required' => 'Lütfen bir dosya seçin.',
             'internship_form.file' => 'Yüklenen öğe geçerli bir dosya olmalıdır.',
@@ -145,9 +145,9 @@ class CareerController extends Controller
             'internship_form.max' => 'Dosya boyutu en fazla 50MB olabilir.',
             'internship_start_date.required' => 'Lütfen staj başlangıç tarihini girin.',
             'internship_start_date.date' => 'Geçerli bir başlangıç tarihi girin.',
-            'internship_end_date.required' => 'Lütfen staj bitiş tarihini girin.',
+            'internship_total_days.required' => 'Lütfen staj süresini girin.',
-            'internship_end_date.date' => 'Geçerli bir bitiş tarihi girin.',
+            'internship_total_days.integer' => 'Staj süresi geçerli bir tam sayı olmalıdır.',
-            'internship_end_date.after_or_equal' => 'Bitiş tarihi, başlangıç tarihinden önce olamaz.',
+            'internship_total_days.min' => 'Staj süresi en az 1 gün olmalıdır.',
         ]);
 
         $intern = CareerApplication::findOrFail(session('intern_id'));
@@ -160,23 +160,29 @@ class CareerController extends Controller
 
             $path = $request->file('internship_form')->store('to_be_signed_interns', 'public');
 
-            // Calculate business days (excluding weekends)
+            // Calculate end date based on weekdays and duration
             $startDate = \Carbon\Carbon::parse($request->internship_start_date);
-            $endDate = \Carbon\Carbon::parse($request->internship_end_date);
+            $daysToAdd = intval($request->internship_total_days);
-            $days = 0;
+            
-            $tempDate = $startDate->copy();
+            $endDate = $startDate->copy();
-            while ($tempDate->lte($endDate)) {
+            $count = 0;
-                if (!$tempDate->isWeekend()) {
+            $temp = $startDate->copy();
-                    $days++;
+            
+            while ($count < $daysToAdd) {
+                if ($temp->isWeekend()) {
+                    $temp->addDay();
+                    continue;
                 }
-                $tempDate->addDay();
+                $endDate = $temp->copy();
+                $temp->addDay();
+                $count++;
             }
 
             $intern->update([
                 'to_be_signed_internship_form_path' => $path,
                 'internship_start_date' => $request->internship_start_date,
-                'internship_end_date' => $request->internship_end_date,
+                'internship_end_date' => $endDate->format('Y-m-d'),
-                'internship_total_days' => $days,
+                'internship_total_days' => $daysToAdd,
             ]);
 
             return redirect()->back()->with('success', 'İmzalanacak staj formunuz ve staj tarihleri başarıyla kaydedildi.');

resources/views/front/career/intern_dashboard.blade.php

@@ -180,14 +180,18 @@
                   <form action="{{ route('intern.upload-form') }}" method="POST" enctype="multipart/form-data" class="space-y-4">
                     @csrf
                     
-                    <div class="grid grid-cols-1 sm:grid-cols-2 gap-4">
+                    <div class="grid grid-cols-1 sm:grid-cols-3 gap-4">
                       <div>
                         <label for="internship_start_date" class="block text-xs font-extrabold text-slate-500 uppercase tracking-wider mb-1.5">Staj Başlangıç Tarihi</label>
-                        <input type="date" name="internship_start_date" id="internship_start_date" required value="{{ $intern->internship_start_date }}" class="w-full px-4 py-3 rounded-xl border border-slate-200 focus:border-blue-400 focus:ring-1 focus:ring-blue-400 focus:outline-none text-sm font-semibold text-slate-700 bg-white transition-all" />
+                        <input type="date" name="internship_start_date" id="internship_start_date" onchange="calculateEndDateFrontend()" oninput="calculateEndDateFrontend()" required value="{{ $intern->internship_start_date }}" class="w-full px-4 py-3 rounded-xl border border-slate-200 focus:border-blue-400 focus:ring-1 focus:ring-blue-400 focus:outline-none text-sm font-semibold text-slate-700 bg-white transition-all" />
                       </div>
                       <div>
-                        <label for="internship_end_date" class="block text-xs font-extrabold text-slate-500 uppercase tracking-wider mb-1.5">Staj Bitiş Tarihi</label>
+                        <label for="internship_total_days" class="block text-xs font-extrabold text-slate-500 uppercase tracking-wider mb-1.5">Staj Süresi (İş Günü)</label>
-                        <input type="date" name="internship_end_date" id="internship_end_date" required value="{{ $intern->internship_end_date }}" class="w-full px-4 py-3 rounded-xl border border-slate-200 focus:border-blue-400 focus:ring-1 focus:ring-blue-400 focus:outline-none text-sm font-semibold text-slate-700 bg-white transition-all" />
+                        <input type="number" name="internship_total_days" id="internship_total_days" onchange="calculateEndDateFrontend()" oninput="calculateEndDateFrontend()" min="1" required value="{{ $intern->internship_total_days }}" placeholder="Örn: 20" class="w-full px-4 py-3 rounded-xl border border-slate-200 focus:border-blue-400 focus:ring-1 focus:ring-blue-400 focus:outline-none text-sm font-semibold text-slate-700 bg-white transition-all" />
+                      </div>
+                      <div>
+                        <label for="internship_end_date" class="block text-xs font-extrabold text-slate-500 uppercase tracking-wider mb-1.5">Staj Bitiş Tarihi (Otomatik)</label>
+                        <input type="date" name="internship_end_date" id="internship_end_date" readonly class="w-full px-4 py-3 rounded-xl border border-slate-200 bg-slate-50 text-slate-500 cursor-not-allowed focus:outline-none text-sm font-semibold transition-all" value="{{ $intern->internship_end_date }}" />
                       </div>
                     </div>
 
@@ -274,6 +278,43 @@
       submitBtn.classList.add('opacity-50', 'cursor-not-allowed');
     }
   }
+
+  function calculateEndDateFrontend() {
+    const startDateVal = document.getElementById('internship_start_date').value;
+    const totalDaysVal = document.getElementById('internship_total_days').value;
+    const endDateInput = document.getElementById('internship_end_date');
+    
+    if (!startDateVal || !totalDaysVal || totalDaysVal <= 0) {
+      return;
+    }
+    
+    let date = new Date(startDateVal);
+    let daysToAdd = parseInt(totalDaysVal);
+    let count = 0;
+    let endDate = new Date(startDateVal);
+    
+    while (count < daysToAdd) {
+      const dayOfWeek = date.getDay();
+      if (dayOfWeek === 6 || dayOfWeek === 0) { // 6 = Saturday, 0 = Sunday
+        date.setDate(date.getDate() + 1);
+        continue;
+      }
+      endDate = new Date(date);
+      date.setDate(date.getDate() + 1);
+      count++;
+    }
+    
+    // Format to YYYY-MM-DD
+    const yyyy = endDate.getFullYear();
+    const mm = String(endDate.getMonth() + 1).padStart(2, '0');
+    const dd = String(endDate.getDate()).padStart(2, '0');
+    endDateInput.value = `${yyyy}-${mm}-${dd}`;
+  }
+
+  // Trigger calculation once on load if values exist
+  document.addEventListener('DOMContentLoaded', function() {
+    calculateEndDateFrontend();
+  });
 </script>
 <style>
   .shadow-xl {