Fix coupon enum formatting in Filament table

app/Filament/Resources/Coupons/Tables/CouponsTable.php

@@ -40,7 +40,7 @@ class CouponsTable
                 TextColumn::make('type')
                     ->label(__('Type'))
                     ->badge()
-                    ->formatStateUsing(fn ($state) => Str::headline($state))
+                    ->formatStateUsing(fn ($state) => static::formatEnumState($state))
                     ->sortable(),
                 TextColumn::make('amount')
                     ->label(__('Amount'))
@@ -59,7 +59,7 @@ class CouponsTable
                     ->label(__('Status'))
                     ->badge()
                     ->sortable()
-                    ->formatStateUsing(fn ($state) => Str::headline($state)),
+                    ->formatStateUsing(fn ($state) => static::formatEnumState($state)),
                 TextColumn::make('starts_at')
                     ->label(__('Starts'))
                     ->date()
@@ -151,4 +151,21 @@ class CouponsTable
                 ]),
             ]);
     }
+
+    public static function formatEnumState(mixed $state): string
+    {
+        if ($state instanceof CouponType || $state instanceof CouponStatus) {
+            return $state->label();
+        }
+
+        if ($state instanceof \BackedEnum) {
+            return Str::headline($state->value);
+        }
+
+        if (is_string($state)) {
+            return Str::headline($state);
+        }
+
+        return '';
+    }
 }

tests/Unit/CouponsTableTest.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace Tests\Unit;
+
+use App\Enums\CouponStatus;
+use App\Enums\CouponType;
+use App\Filament\Resources\Coupons\Tables\CouponsTable;
+use Tests\TestCase;
+
+class CouponsTableTest extends TestCase
+{
+    public function test_it_formats_enum_states(): void
+    {
+        $this->assertSame(CouponType::FLAT->label(), CouponsTable::formatEnumState(CouponType::FLAT));
+        $this->assertSame(CouponStatus::PAUSED->label(), CouponsTable::formatEnumState(CouponStatus::PAUSED));
+        $this->assertSame('Flat Per Seat', CouponsTable::formatEnumState('flat_per_seat'));
+        $this->assertSame('', CouponsTable::formatEnumState(null));
+    }
+}