first change

Modules/CourseFinder/app/Services/RequiredDocumentService.php

@@ -0,0 +1,49 @@
+<?php
+
+namespace Modules\CourseFinder\Services;
+
+use Illuminate\Support\Facades\DB;
+use Modules\CourseFinder\Models\RequiredDocument;
+
+class RequiredDocumentService
+{
+
+    public function getAllCategories()
+    {
+        $query = RequiredDocument::query();
+        return $query->get();
+    }
+
+    public function storeRequiredDocument(array $requiredDocumentData): RequiredDocument
+    {
+        return DB::transaction(function () use ($requiredDocumentData) {
+            $requiredDocument = RequiredDocument::create($requiredDocumentData);
+
+            return $requiredDocument;
+        });
+    }
+
+    public function getRequiredDocumentById(int $id)
+    {
+        return RequiredDocument::findOrFail($id);
+    }
+
+    public function updateRequiredDocument(int $id, array $requiredDocumentData)
+    {
+        $requiredDocument = $this->getRequiredDocumentById($id);
+
+        return DB::transaction(function () use ($requiredDocument, $requiredDocumentData) {
+            $requiredDocument->update($requiredDocumentData);
+            return $requiredDocument;
+        });
+    }
+
+    public function deleteRequiredDocument(int $id)
+    {
+        return DB::transaction(function () use ($id) {
+            $requiredDocument = $this->getRequiredDocumentById($id);
+            $requiredDocument->delete();
+            return true;
+        });
+    }
+}