reconstruction of the project

app/Services/Administrator/AdministratorEnrollmentRefundService.php

@@ -0,0 +1,76 @@
+<?php
+
+namespace App\Services\Administrator;
+
+use App\Models\Enrollment;
+use App\Models\Invoice;
+use App\Models\RefundModel as Refund;
+use App\Services\FeeCalculationService;
+
+class AdministratorEnrollmentRefundService
+{
+    public function __construct(
+        protected FeeCalculationService $feeCalculationService
+    ) {
+    }
+
+    public function processRefunds(array $parentIds, string $schoolYear, int $editorUserId): array
+    {
+        $errors = [];
+        $refundAmountByParent = [];
+
+        foreach ($parentIds as $pid) {
+            $students = Enrollment::query()
+                ->where('parent_id', $pid)
+                ->where('school_year', $schoolYear)
+                ->get()
+                ->toArray();
+
+            if (empty($students)) {
+                continue;
+            }
+
+            $invoice = Invoice::query()
+                ->where('parent_id', $pid)
+                ->where('school_year', $schoolYear)
+                ->latest('created_at')
+                ->first();
+
+            if (!$invoice) {
+                $errors[] = "No invoice found for parent ID {$pid} (for refund calc).";
+                continue;
+            }
+
+            $refundAmount = $this->feeCalculationService->calculateRefund($students, $pid);
+            $refundAmountByParent[$pid] = $refundAmount;
+
+            $existingRefund = Refund::query()
+                ->where('invoice_id', $invoice->id)
+                ->first();
+
+            if ($existingRefund) {
+                $existingRefund->update([
+                    'refund_amount' => $refundAmount,
+                    'status' => 'Pending',
+                    'updated_by' => $editorUserId,
+                ]);
+            } else {
+                Refund::query()->create([
+                    'parent_id' => $pid,
+                    'school_year' => $invoice->school_year,
+                    'invoice_id' => $invoice->id,
+                    'refund_amount' => $refundAmount,
+                    'refund_paid_amount' => 0.0,
+                    'status' => 'Pending',
+                    'requested_at' => now(),
+                    'updated_by' => $editorUserId,
+                ]);
+            }
+        }
+
+        return [
+            'errors' => $errors,
+            'refundAmountByParent' => $refundAmountByParent,
+        ];
+    }
+}