wip

app/Filament/Company/Resources/Sales/InvoiceResource.php

                                     ->label('P.O/S.O Number'),
                                 Forms\Components\DatePicker::make('date')
                                     ->label('Invoice Date')
-                                    ->default(now()),
+                                    ->live()
+                                    ->default(now())
+                                    ->afterStateUpdated(function (Forms\Set $set, Forms\Get $get, $state) {
+                                        $date = $state;
+                                        $dueDate = $get('due_date');
+
+                                        if ($date && $dueDate && $date > $dueDate) {
+                                            $set('due_date', $date);
+                                        }
+                                    }),
                                 Forms\Components\DatePicker::make('due_date')
                                     ->label('Payment Due')
                                     ->default(function () use ($company) {
                                         return now()->addDays($company->defaultInvoice->payment_terms->getDays());
+                                    })
+                                    ->minDate(static function (Forms\Get $get) {
+                                        return $get('date') ?? now();
                                     }),
                             ])->grow(true),
                         ])->from('md'),

app/Models/Accounting/Invoice.php

             }
         }
 
-        $this->updateQuietly([
+        $this->update([
             'status' => InvoiceStatus::Unsent,
         ]);
     }

app/Observers/InvoiceObserver.php

 
 namespace App\Observers;
 
+use App\Enums\Accounting\InvoiceStatus;
 use App\Models\Accounting\DocumentLineItem;
 use App\Models\Accounting\Invoice;
 use App\Models\Accounting\Transaction;
         //
     }
 
+    public function saving(Invoice $invoice): void
+    {
+        if ($invoice->due_date->isBefore(today()) && $invoice->canBeOverdue()) {
+            $invoice->status = InvoiceStatus::Overdue;
+        }
+    }
+
     /**
      * Handle the Invoice "deleted" event.
      */

app/Observers/TransactionObserver.php

 
         $invoiceTotal = (int) $invoice->getRawOriginal('total');
 
-        $invoice->updateQuietly([
+        $invoice->update([
             'amount_paid' => CurrencyConverter::convertCentsToFloat($totalPaid),
             'status' => match (true) {
                 $totalPaid > $invoiceTotal => InvoiceStatus::Overpaid,

database/factories/Accounting/InvoiceFactory.php

 
             $this->recalculateTotals($invoice);
 
-            if ($invoice->due_date->isPast() && $invoice->canBeOverdue()) {
+            if ($invoice->due_date->isBefore(today()) && $invoice->canBeOverdue()) {
                 $invoice->updateQuietly([
                     'status' => InvoiceStatus::Overdue,
                 ]);
             $discountTotal = $invoice->lineItems()->sum('discount_total') / 100;
             $grandTotal = $subtotal + $taxTotal - $discountTotal;
 
-            $invoice->updateQuietly([
+            $invoice->update([
                 'subtotal' => $subtotal,
                 'tax_total' => $taxTotal,
                 'discount_total' => $discountTotal,