FEATURE: add service provider for generating module.json

app/Providers/ModuleManager.php

@@ -0,0 +1,59 @@
+<?php
+
+namespace App\Providers;
+
+use App\Models\Module;
+use Illuminate\Support\ServiceProvider;
+
+class ModuleManager extends ServiceProvider
+{
+    /**
+     * Bootstrap the application services.
+     *
+     * @return void
+     */
+    public function boot()
+    {
+        // this service provider needs published config - config is merged right after this service provider
+        $modules = Module::get();
+
+        // iterate over all modules and enable or disable them
+        foreach ($modules as $module) {
+            $this->createModulesJson($module);
+        }
+    }
+
+    /**
+     * Register the application services.
+     *
+     * @return void
+     */
+    public function register()
+    {
+    }
+
+    /**
+     * Read config file and merge it with module config in database.
+     *
+     * This method REQUIRES published config of given module (otherwise config(modulename) is not available)!
+     *
+     * @param Module $module
+     *
+     * @throws \ErrorException when module.json is not writable
+     */
+    private function createModulesJson(Module $module)
+    {
+        $data = config($module->alias);
+        $data['active'] = $module->enabled;
+
+        // path to module.json
+        $path = config('modules.paths.modules') . DIRECTORY_SEPARATOR . $data['name'] . DIRECTORY_SEPARATOR . 'module.json';
+
+        if (!is_writable($path)) {
+            throw new \ErrorException('Cannot write to ' . $path . '. Module ' . $data['name'] . ' cannot be enabled.');
+        }
+
+        // create file
+        file_put_contents($path, json_encode($data));
+    }
+}