FEATURE: make artisan command for installing work with submodules

app/Console/Commands/InstallModule.php

@@ -4,6 +4,8 @@ namespace App\Console\Commands;
 
 use App\Models\Module;
 use Illuminate\Console\Command;
+use Illuminate\Contracts\Filesystem\FileNotFoundException;
+use Illuminate\Support\Facades\File;
 use Symfony\Component\Console\Exception\InvalidArgumentException;
 use Symfony\Component\Routing\Exception\MissingMandatoryParametersException;
 
@@ -67,11 +69,25 @@ class InstallModule extends Command
      * yet.
      *
      * @return array
+     * @throws FileNotFoundException
      */
     private function loadConfig()
     {
+        $basePath = $this->modulesPath . DIRECTORY_SEPARATOR . $this->moduleName . DIRECTORY_SEPARATOR;
+        $path = $basePath . 'Config' . DIRECTORY_SEPARATOR . 'config.php';
+
+        // check if module has Config/config.php file
+        if (!file_exists($path)) {
+            $path = $basePath . 'info.php';
+
+            // does module has info.php? If not, throw error, because we have no info about this module
+            if (!file_exists($path)) {
+                throw new FileNotFoundException('Missing config file. Create /Config/config.php or /info.php (for module with submodules) in ' . $basePath);
+            }
+        }
+
         // we cannot rely on config() helper, because this module does not have to be published
-        $config = @include($this->modulesPath . DIRECTORY_SEPARATOR . $this->moduleName . DIRECTORY_SEPARATOR . 'Config' . DIRECTORY_SEPARATOR . 'config.php');
+        $config = @include($path);
 
         return $config;
     }
@@ -83,7 +99,7 @@ class InstallModule extends Command
      */
     private function checkMandatoryFields($config)
     {
-        $fields = ['providers', 'handler', 'name', 'files', 'alias'];
+        $fields = ['name'];
         foreach ($fields as $field) {
             if (!isset($config[$field])) {
                 throw new MissingMandatoryParametersException('Missing *' . $field . '* in config file! Cannot install ' . $this->moduleName);
@@ -107,25 +123,51 @@ class InstallModule extends Command
     {
         $name = isset($config['translatedName']) ? $config['translatedName'] : $config['name'];
         $description = isset($config['translatedDescription']) ? $config['translatedDescription'] : null;
+        $alias = isset($config['alias']) ? $config['alias'] : null;
+        $handler = isset($config['handler']) ? $config['handler'] : null;
+        $providers = isset($config['providers']) ? $config['providers'] : [];
 
         // check if module is not installed yet
-        $exists = Module::where('handler', $config['handler'])
+        $exists = Module::where('handler', $handler)
+                        ->where('name', $config['name'])
                         ->exists();
 
+        if (!isset($config['hasSubmodules']) || !$config['hasSubmodules']) {
             if ($exists) {
                 throw new \Exception('Module ' . $config['name'] . ' already exists in database.');
             }
 
+            // insert module into database
             $settings = [
                 'staticName' => $this->moduleName,
-            'providers'  => $config['providers'],
+                'providers'  => $providers,
                 'aliases'    => isset($config['aliases']) ? $config['aliases'] : [],
                 'order'      => isset($config['order']) ? $config['order'] : 0,
-            'files'      => $config['files']
-
+                'files'      => isset($config['files']) ? $config['files'] : []
             ];
-        $module = Module::install($name, $config['alias'], $description, $config['handler'], $settings);
 
-        return $module;
+            $module = Module::install($name, $alias, $description, $handler, $settings);
+        }
+
+        // try to install submodules
+        if (isset($config['hasSubmodules']) && $config['hasSubmodules']) {
+            $this->installSubmodules($this->modulesPath . DIRECTORY_SEPARATOR . $this->moduleName);
+        }
+    }
+
+    /**
+     * Crawl all subdirectories in module and try to install submodules
+     *
+     * @param $path string path to module base directory
+     */
+    private function installSubmodules($path)
+    {
+        $submodules = File::directories($path);
+
+        foreach ($submodules as $submodulePath) {
+            $submodule = str_replace($this->modulesPath . DIRECTORY_SEPARATOR, '', $submodulePath);
+
+            $this->call('install-module', ['name' => $submodule]);
+        }
     }
 }

app/Models/Module.php

@@ -2,10 +2,8 @@
 
 namespace App\Models;
 
-use App\Handlers\Contracts\AppHandler;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Support\Facades\App;
-use Modules\Blog\Article\Handlers\Article;
 
 /**
  * Class Module
@@ -44,7 +42,7 @@ class Module extends Model
             throw new \ErrorException('Modules can be installed only via Artisan!');
         }
 
-        $managesContent = in_array('App\Handlers\Contracts\AppHandler', class_implements($handler));
+        $managesContent = $handler ? in_array('App\Handlers\Contracts\AppHandler', class_implements($handler)) : false;
         $supportCategories = $managesContent ? call_user_func([$handler, 'supportCategories']) : false;
 
         // insert module into database
@@ -60,7 +58,9 @@ class Module extends Model
                                  ]);
 
         // install something module-specific
+        if ($handler) {
             call_user_func([$handler, 'install']);
+        }
 
         return $module;
     }