<?php

namespace App\Admin\Extensions\Form\Product;

use Dcat\Admin\Form\Field;

class SelectAttr extends Field
{
    protected $view = 'admin.form.product-select-attr';

    protected $listen = '';

    protected static $js = [
        '/vendor/vue/vue.js',
        // 'https://cdn.jsdelivr.net/npm/vue/dist/vue.js'    // 这里可以将vue.js下载下来引入
    ];

    public function listen($listen = '')
    {
        $this->listen = $listen;
        return $this;
    }

    public function render()
    {
        $this->addVariables(['listen' => $this->listen]);
        return parent::render();
    }

    /**
     * 格式化保存值
     *
     * @param [type] $data
     * @return void
     */
    protected function prepareInputValue($value)
    {
        $attrs = $value;
        //过滤空值；
        if ($attrs) {
            $attrs =json_decode($attrs, true);
            foreach ($attrs as $key=> &$attr) {
                $attr['attrs'] = array_filter(array_map(function ($item) {
                    if (!empty($item['value'])) {
                        return $item;
                    }
                }, $attr['attrs']));
                //如果该组无值，则删除该组
                if (count($attr['attrs']) < 1) {
                    unset($attrs[$key]);
                }
            }
        }
        return $attrs;
    }

    /**
      * 格式化渲染值
      *
      * @param [type] $value
      * @return void
      */
    protected function formatFieldData($data)
    {
        $value = parent::formatFieldData($data);
        // dd($value);
        return json_encode($value);
    }
}