Set the application key ourself, based of laravel command

Modules/Core/Console/Installers/Scripts/SetAppKey.php

@@ -3,10 +3,13 @@
 namespace Modules\Core\Console\Installers\Scripts;
 
 use Illuminate\Console\Command;
+use Illuminate\Encryption\Encrypter;
+use Illuminate\Console\ConfirmableTrait;
 use Modules\Core\Console\Installers\SetupScript;
 
 class SetAppKey implements SetupScript
 {
+    use ConfirmableTrait;
     /**
      * Fire the install script
      * @param  Command $command
@@ -14,11 +17,77 @@ class SetAppKey implements SetupScript
      */
     public function fire(Command $command)
     {
-        if ($command->option('verbose')) {
-            $command->call('key:generate');
+        $key = $this->generateRandomKey();
 
+        // Next, we will replace the application key in the environment file so it is
+        // automatically setup for this developer. This key gets generated using a
+        // secure random byte generator and is later base64 encoded for storage.
+        if (! $this->setKeyInEnvironmentFile($key)) {
             return;
         }
-        $command->callSilent('key:generate');
+
+        config()->set('app.key', $key);
+
+        if ($command->option('verbose')) {
+            $command->info("Application key [$key] set successfully.");
+        }
+    }
+
+    /**
+     * Generate a random key for the application.
+     *
+     * @return string
+     */
+    protected function generateRandomKey()
+    {
+        return 'base64:'.base64_encode(
+                Encrypter::generateKey(config('app.cipher'))
+            );
+    }
+
+    /**
+     * Set the application key in the environment file.
+     *
+     * @param  string  $key
+     * @return bool
+     */
+    protected function setKeyInEnvironmentFile($key)
+    {
+        $currentKey = config('app.key');
+
+        if (strlen($currentKey) !== 0 && (! $this->confirmToProceed())) {
+            return false;
+        }
+
+        $this->writeNewEnvironmentFileWith($key);
+
+        return true;
+    }
+
+    /**
+     * Write a new environment file with the given key.
+     *
+     * @param  string  $key
+     * @return void
+     */
+    protected function writeNewEnvironmentFileWith($key)
+    {
+        file_put_contents(app()->environmentFilePath(), preg_replace(
+            $this->keyReplacementPattern(),
+            'APP_KEY='.$key,
+            file_get_contents(app()->environmentFilePath())
+        ));
+    }
+
+    /**
+     * Get a regex pattern that will match env APP_KEY with any random key.
+     *
+     * @return string
+     */
+    protected function keyReplacementPattern()
+    {
+        $escaped = preg_quote('='.config('app.key'), '/');
+
+        return "/^APP_KEY{$escaped}/m";
     }
 }