DOCUMENTATION: add documentantion for installation commands

app/Console/Commands/InstallAllModules.php

@@ -3,7 +3,6 @@
 namespace App\Console\Commands;
 
 use Illuminate\Console\Command;
-use Illuminate\Support\Facades\Artisan;
 use Illuminate\Support\Facades\File;
 
 class InstallAllModules extends Command
@@ -38,11 +37,13 @@ class InstallAllModules extends Command
      */
     public function handle()
     {
+        // crawl all subdirectories in modules path
         $modules = File::directories(config('modules.paths.modules'));
 
         foreach ($modules as $module) {
             $moduleName = basename($module);
 
+            // try to install each module
             try {
                 $this->call('install-module', ['name' => $moduleName]);
             } catch (\Exception $e) {

app/Console/Commands/InstallModule.php

@@ -42,23 +42,32 @@ class InstallModule extends Command
      */
     public function handle()
     {
-        $name = $this->argument('name');
-        $this->moduleName = $name;
+        $this->moduleName = $name = $this->argument('name');
 
+        // invalid module name provided
         if (!is_dir($this->modulesPath . DIRECTORY_SEPARATOR . $name)) {
             throw new InvalidArgumentException('Invalid module ' . $name . '. No directory under ' . $this->modulesPath . DIRECTORY_SEPARATOR . $name . ' found!');
         }
 
+        // get config
         $config = $this->loadConfig();
 
+        // check if it is valid
         $this->checkMandatoryFields($config);
 
         // all mandatory fields are present, we can write it into database and create modules.json
         $this->installModule($config);
 
+        // inform user
         $this->line('Module ' . $name . ' successfuly installed');
     }
 
+    /**
+     * Load config from Config/config.php in module files. We cannot use config() because the file have not published
+     * yet.
+     *
+     * @return array
+     */
     private function loadConfig()
     {
         // we cannot rely on config() helper, because this module does not have to be published
@@ -67,6 +76,11 @@ class InstallModule extends Command
         return $config;
     }
 
+    /**
+     * Checks if config contains all mandatory entries.
+     *
+     * @param $config
+     */
     private function checkMandatoryFields($config)
     {
         $fields = ['providers', 'handler', 'name', 'files', 'alias'];
@@ -77,6 +91,18 @@ class InstallModule extends Command
         }
     }
 
+    /**
+     * Installs module into database.
+     *
+     * This method calls Module::install, which handles specific installation of module. In this way we should be able
+     * to install any module even with some other database structures.
+     *
+     * @param $config
+     *
+     * @return Module
+     * @throws \ErrorException
+     * @throws \Exception
+     */
     private function installModule($config)
     {
         $name = isset($config['translatedName']) ? $config['translatedName'] : $config['name'];