Add inertiajs/inertia-laravel to composer array

Typically you'll install the composer preset as a dev dependency, and
may remove it for production, but we still need the inertia-laravel
dependency in prod, otherwise everything breaks when it's removed.

Author: michaeldyrynda

README.md

@@ -10,7 +10,7 @@ This preset scaffolding removes the manual steps required to get up and running
 ## Usage
 
 1. Fresh install Laravel >= 6.0 and cd to your app.
-2. Install this preset via `composer require laravel-frontend-presets/inertiajs`. Laravel will automatically discover this package. No need to register the service provider.
+2. Install this preset via `composer require --dev laravel-frontend-presets/inertiajs`. Laravel will automatically discover this package. No need to register the service provider.
 
 ### Installation
 

src/InertiaJsPreset.php

@@ -18,6 +18,7 @@ public static function install($command)
 
         static::updatePackages();
         static::installBootstrapDefault();
+        static::updateComposer(false);
         static::updateBootstrapping();
         static::updateWelcomePage();
         static::updateGitignore();
@@ -37,6 +38,13 @@ protected static function updatePackageArray(array $packages)
         ], $packages);
     }
 
+    protected static function updateComposerArray(array $packages)
+    {
+        return array_merge([
+            'inertiajs/inertia-laravel' => '^0.1',
+        ], $packages);
+    }
+
     protected static function updateBootstrapping()
     {
         copy(__DIR__.'/inertiajs-stubs/webpack.mix.js', base_path('webpack.mix.js'));
@@ -95,4 +103,27 @@ protected static function installBootstrapDefault()
             $process->run();
         });
     }
+
+    protected static function updateComposer($dev = true)
+    {
+        if (! file_exists(base_path('composer.json'))) {
+            return;
+        }
+
+        $configurationKey = $dev ? 'require-dev' : 'require';
+
+        $packages = json_decode(file_get_contents(base_path('composer.json')), true);
+
+        $packages[$configurationKey] = static::updateComposerArray(
+            array_key_exists($configurationKey, $packages) ? $packages[$configurationKey] : [],
+            $configurationKey
+        );
+
+        ksort($packages[$configurationKey]);
+
+        file_put_contents(
+            base_path('composer.json'),
+            json_encode($packages, JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT).PHP_EOL
+        );
+    }
 }