fix UnlockedLabs#232: Implement EnrollmentState Enum and incorporat…

…e in `Enrollment` Model and `StoreEnrollmentRequest`.

app/Enums/EnrollmentState.php

@@ -0,0 +1,19 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Enums;
+
+enum EnrollmentState: string
+{
+    case ACTIVE = 'active';
+    case INACTIVE = 'inactive';
+    // case INVITED = 'invited';
+    case COMPLETED = 'completed';
+    case DELETED = 'deleted';
+
+    public static function toArray(): array
+    {
+        return array_column(EnrollmentState::cases(), 'value');
+    }
+}

app/Http/Requests/StoreEnrollmentRequest.php

@@ -4,7 +4,9 @@
 
 namespace App\Http\Requests;
 
+use App\Enums\EnrollmentState;
 use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Rule;
 
 class StoreEnrollmentRequest extends FormRequest
 {
@@ -26,7 +28,7 @@ public function rules(): array
         return [
             'user_id' => 'required|exists:users,id',
             'course_id' => 'required|exists:courses,id',
-            'enrollment_state' => 'nullable|in:active,inactive,completed,deleted',
+            'enrollment_state' => [Rule::enum(EnrollmentState::class)],
             'external_enrollment_id' => 'required|max:255',
             'external_start_at' => 'required|date',
             'external_end_at' => 'nullable|date|after_or_equal:provider_start_at',

app/Models/Enrollment.php

@@ -4,6 +4,7 @@
 
 namespace App\Models;
 
+use App\Enums\EnrollmentState;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 
@@ -26,6 +27,7 @@ class Enrollment extends Model
     protected $casts = [
         'external_start_at' => 'datetime',
         'external_end_at' => 'datetime',
+        'enrollment_state' => EnrollmentState::class,
     ];
 
     /**