add json respons header

Author: Dipesh Sukhia

config/config.php

@@ -15,4 +15,6 @@
     */
     'model_directory_path' => 'app',
 
+    'allow_cross_origin' => env('API_ALLOW_CROSS_ORIGIN', false),
+    'json_response' => env('API_JSON_RESPONSE', true),
 ];

src/LaravelApiGeneratorServiceProvider.php

@@ -59,5 +59,10 @@ public function register()
         $this->app->singleton('laravel-api-generator', function (string $model) {
             return new LaravelApiGenerator($model);
         });
+
+        $this->app['router']->middleware('ApiHeaderInject', 'Bhavingajjar\LaravelApiGenerator\Middleware\ApiHeaderInject');
+
+        $this->app['router']->aliasMiddleware('ApiHeaderInject', \Bhavingajjar\LaravelApiGenerator\Middleware\ApiHeaderInject::class);
+        $this->app['router']->pushMiddlewareToGroup('api', \Bhavingajjar\LaravelApiGenerator\Middleware\ApiHeaderInject::class);
     }
 }

src/Middleware/ApiHeaderInject.php

@@ -0,0 +1,23 @@
+<?php
+namespace Bhavingajjar\LaravelApiGenerator\Middleware;
+
+use Closure;
+use Illuminate\Http\Response;
+use Illuminate\Support\Facades\Config;
+
+class ApiHeaderInject
+{
+    public function handle($request, Closure $next)
+    {
+        $response = $next($request);
+        if(config('laravel-api-generator.json_response')) {
+            $response = $response->headers('Content-Type', 'application/json')
+                ->header('Accept', 'application/json');
+        }
+        if(config('laravel-api-generator.allow_cross_origin')) {
+            $response = $response->header('Access-Control-Allow-Origin', '*')
+                ->header('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE, OPTIONS');
+        }
+        return $response;
+    }
+}