add blade feature

Author: fabio-ivona

composer.json

@@ -57,6 +57,13 @@
             "phpstan/extension-installer": true
         }
     },
+    "extra": {
+        "laravel": {
+            "providers": [
+                "DefStudio\\EnumFeatures\\ServiceProvider"
+            ]
+        }
+    },
     "minimum-stability": "dev",
     "prefer-stable": true
 }

src/Exceptions/FeatureException.php

@@ -14,4 +14,11 @@ public static function notEnabled(UnitEnum $feature): FeatureException
 
         return new self("Feature [$name] is not enabled");
     }
+
+    public static function invalid_feature_enum(UnitEnum $feature): FeatureException
+    {
+        $name = $feature instanceof BackedEnum ? $feature->value : $feature->name;
+
+        return new self("Enum [$name] does not use DefineFeatures trait");
+    }
 }

src/ServiceProvider.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace DefStudio\EnumFeatures;
+
+use DefStudio\EnumFeatures\Concerns\DefinesFeatures;
+use DefStudio\EnumFeatures\Exceptions\FeatureException;
+use Illuminate\Support\Facades\Blade;
+use Spatie\LaravelPackageTools\Package;
+use Spatie\LaravelPackageTools\PackageServiceProvider;
+use UnitEnum;
+
+class ServiceProvider extends PackageServiceProvider
+{
+    public function configurePackage(Package $package): void
+    {
+        $package->name('enum-features');
+    }
+
+    public function packageBooted(): void
+    {
+        Blade::if('feature', function (UnitEnum $feature) {
+            if (! class_uses($feature, DefinesFeatures::class)) {
+                throw FeatureException::invalid_feature_enum($feature);
+            }
+
+            /** @var DefinesFeatures $feature */
+            return $feature->enabled();
+        });
+    }
+}