<?php

namespace app\admin\controller\service;

use app\common\controller\Backend;
use think\Db;

/**
 * 服务类目
 *
 * @icon fa fa-th-large
 */
class Cat extends Backend
{
    /**
     * Cat模型对象
     * @var \app\admin\model\service\Cat
     */
    protected $model = null;
    protected $searchFields = 'id,name';

    public function _initialize()
    {
        parent::_initialize();
        $this->model = new \app\admin\model\service\Cat;
        $this->view->assign("statusList", $this->model->getStatusList());
    }

    public function index()
    {
        $this->request->filter(['strip_tags', 'trim']);
        if (false === $this->request->isAjax()) {
            return $this->view->fetch();
        }
        if ($this->request->request('keyField')) {
            return $this->selectpage();
        }
        [$where, $sort, $order, $offset, $limit] = $this->buildparams();
        $list = $this->model
            ->where($where)
            ->order($sort, $order)
            ->paginate($limit);

        $rows = $list->items();
        if (!empty($rows)) {
            $catCountRows = Db::name('service')
                ->field('cat_id, count(id) as cnt')
                ->group('cat_id')
                ->select();
            $catCounts = [];
            foreach ($catCountRows as $cr) {
                $catCounts[(int)$cr['cat_id']] = (int)$cr['cnt'];
            }
            foreach ($rows as &$r) {
                $cid = (int)$r['id'];
                $r['goods_count'] = isset($catCounts[$cid]) ? (int)$catCounts[$cid] : 0;
            }
            unset($r);
        }

        return json(['total' => $list->total(), 'rows' => $rows]);
    }

    /**
     * 删除保护：类目下仍有关联商品时禁止物理删除
     */
    public function del($ids = null)
    {
        if (false === $this->request->isPost()) {
            $this->error(__('Invalid parameters'));
        }
        $ids = $ids ?: $this->request->post('ids');
        $idArr = array_values(array_filter(array_map('intval', explode(',', (string)$ids))));
        if (!$idArr) {
            $this->error(__('Parameter %s can not be empty', 'ids'));
        }
        $cnt = (int)Db::name('service')->where('cat_id', 'in', $idArr)->count();
        if ($cnt > 0) {
            $this->error('所选类目下仍包含 ' . $cnt . ' 种服务商品，请先迁移或删除下属商品后再操作');
        }
        return parent::del($ids);
    }
}