<?php

namespace App\Providers;

use Illuminate\Support\ServiceProvider;
use Route;
use Auth;

/**
 * 從Config檔案建立Menu Item，並註冊相關Route
 *
 * Class AdminMenuServiceProvider
 * @package App\Providers
 */
class AdminMenuServiceProvider extends ServiceProvider
{
    protected $namespace = '\\';

    /**
     * Register services.
     *
     * @return void
     */
    public function register()
    {
    }

    /**
     * Bootstrap services.
     *
     * @return void
     */
    public function boot()
    {
        /** 從Config建Admin Menu物件內容 */
        Route::group(['prefix' => config('admin.route') . '/main', 'middleware' => ['web', 'admin.area', 'admin.menu'], 'as' => config('admin.route_name_prefix')], function(){

            //Config的Menu組態設定
            $menuItems = config('admin.menuItems');
            //Menu Route Name的前綴
            $menuRouteNamePrefix = config('admin.menu.route_name_prefix');
            //MenuItemContoller的Route處理函式
            $menuItemControllerHandlingMethod = 'handle';

            /**
             * MenuItem的處理物件，為全域Singleton物件
             * @var \App\Services\Admin\MainMenuItemService $adminMenu
             */
            $adminMenu = app('AdminMenu');

            foreach ($menuItems as $menuItem) {
                if($menuItem['type'] == 'item') {
                    if(class_exists($menuItem['controller'])) {
                        /**
                         * @var \App\Http\Controllers\Admin\Menu\BaseMenuItemController $parentItem
                         */
                        $parentItem  = new $menuItem['controller'];
                        if(!$parentItem->isValid()) {
                            continue;
                        }
                        $hasChildren = !empty($menuItem['children']);
                        $routeName   = false;
                        $link = '#';
                        if(!$hasChildren) {
                            $routeName = "{$menuRouteNamePrefix}{$parentItem->getSlug()}";
                            $action = "{$menuItem['controller']}@$menuItemControllerHandlingMethod";
                            //註冊Route
                            Route::get($parentItem->getSlug(), $action)->name($routeName);
                        }
                        //註冊選單項目
                        $adminMenu->addItem([
                            'type'       => 'item',
                            'parentSlug' => false,
                            'routeName'  => $routeName,
                        ], $parentItem);
                        if($hasChildren) {
                            foreach((array)$menuItem['children'] as $childMenuItem) {
                                if(class_exists($childMenuItem)) {
                                    /**
                                     * @var \App\Http\Controllers\Admin\Menu\BaseMenuItemController $childItem
                                     */
                                    $childItem = new $childMenuItem;
                                    if(!$childItem->isValid()) {
                                        continue;
                                    }
                                    $routeName = "{$menuRouteNamePrefix}{$parentItem->getSlug()}.{$childItem->getSlug()}";
                                    $action = "$childMenuItem@$menuItemControllerHandlingMethod";
                                    //註冊Route
                                    Route::get("{$parentItem->getSlug()}/{$childItem->getSlug()}", $action)->name($routeName);
                                    //註冊選單項目
                                    $adminMenu->addItem([
                                        'type'       => 'item',
                                        'parentSlug' => $parentItem->getSlug(),
                                        'routeName'  => $routeName,
                                    ], $childItem);
                                }
                            }
                        }
                    }
                } elseif($menuItem['type'] == 'title') {
                    $adminMenu->addItem([
                        'type' => 'title',
                        'name' => $menuItem['name']
                    ]);
                } elseif($menuItem['type'] == 'divider') {
                    $adminMenu->addItem([
                        'type' => 'divider',
                    ]);
                }
            }
        });
    }
}