<?php

namespace Catalyst\MenuBundle\DependencyInjection;

use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Extension\Extension;
use Symfony\Component\DependencyInjection\Loader\YamlFileLoader;
use Symfony\Component\Config\FileLocator;

use Catalyst\MenuBundle\Menu\Collection;
use Catalyst\MenuBundle\Menu\Item;


class CatalystMenuExtension extends Extension
{
    const ORDER_DEFAULT     = 100;

    public function load(array $configs, ContainerBuilder $container)
    {
        $loader = new YamlFileLoader(
            $container,
            new FileLocator(__DIR__ . '/../Resources/config')
        );
        $loader->load('services.yaml');

        // NOTE: cannot use processConfiguration here since having the key as an identifier
        //       will break across multiple configuration files.
        //       Issue can be found here: https://github.com/symfony/symfony/issues/29817

		$data = $this->processConfigs($configs);

        // set acl data for main acl generator
        // $def = $container->getDefinition('catalyst_menu.generator');
        $def = $container->getDefinition('Catalyst\\MenuBundle\\Service\\Generator');
        // $def->replaceArgument('$menu_data', $configs);
        $def->replaceArgument('$menu_data', $data);
    }

    protected function processConfigs($data)
    {
        $pdata = [];

        // error_log(print_r($data, true));

        // manual array merge
        // first layer contains all the instances in config
        foreach ($data as $instance_data)
        {
            // 2nd layer are the groups and the parents
            foreach ($instance_data as $group => $group_data)
            {
				// initialize group data
                if (!isset($pdata[$group]))
                    $pdata[$group] = $group_data;
                else
                {
                    // append to group data
                    foreach ($group_data as $menu_data)
                        $pdata[$group][] = $menu_data;
                }
            }
        }

        // sort group data according to display priority
        foreach ($pdata as $group => $group_data)
        {
            usort($pdata[$group], function($a, $b) {
                if (isset($a['order']))
                    $a_order = $a['order'];
                else
                    $a_order = self::ORDER_DEFAULT;

                if (isset($b['order']))
                    $b_order = $b['order'];
                else
                    $b_order = self::ORDER_DEFAULT;

                return $a_order - $b_order;
            });
        }

        return $pdata;
    }
}