<?php

namespace app\admin\controller\attachment;

use app\common\controller\Backend;
use think\Db;
/**
 * 文件分组
 *
 * @icon fa fa-circle-o
 */
class Group extends Backend
{

    /**
     * AttachmentGroup模型对象
     * @var \app\admin\model\attachment\AttachmentGroup
     */
    protected $model = null;

    protected $noNeedRight = ['index'];

    public function _initialize()
    {
        parent::_initialize();
        $this->model = new \app\admin\model\attachment\AttachmentGroup;
        $this->attachmentModel = new \app\common\model\Attachment;
    }


    /**
     * 查看
    */
    public function index()
    {
       //当前是否为关联查询
       $this->relationSearch = false;
       //设置过滤方法
       $this->request->filter(['strip_tags', 'trim']);
       //如果发送的来源是Selectpage，则转发到Selectpage
       if ($this->request->request('keyField')) {
           return $this->selectpage();
       }
       list($where, $sort, $order, $offset, $limit) = $this->buildparams();
       $limit = 10000;
       $list = $this->model
          ->where($where)
          ->order($sort, $order)
          ->paginate($limit);

       
       $result = array("total" => $list->total(), "rows" => $list->items());
       
       return $this->success("获取成功",$result);
    }

    /**
     * 删除
     *
     * @param $ids
     * @return void
     * @throws DbException
     * @throws DataNotFoundException
     * @throws ModelNotFoundException
     */
    public function del($ids = null)
    {
        if (false === $this->request->isPost()) {
            $this->error(__("Invalid parameters"));
        }
        $ids = $ids ?: $this->request->post("ids");
        if (empty($ids)) {
            $this->error(__('Parameter %s can not be empty', 'ids'));
        }
        $pk = $this->model->getPk();
        $adminIds = $this->getDataLimitAdminIds();
        if (is_array($adminIds)) {
            $this->model->where($this->dataLimitField, 'in', $adminIds);
        }

        $allIds = $this->getAllChildId($ids);

        $list = $this->model->where($pk, 'in', $allIds)->select();

        $count = 0;
        Db::startTrans();
        try {
            foreach ($list as $item) {
                $count += $item->delete();
                //重置文件分组id
                $this->attachmentModel->where(['attachment_group'=>$item->id])->update(['attachment_group'=>0]);
            }
            Db::commit();
        } catch (PDOException|Exception $e) {
            Db::rollback();
            $this->error($e->getMessage());
        }
        if ($count) {
            $this->success("操作成功");
        }
        $this->error(__('No rows were deleted'));
    }

    protected $allChildIds = [];

    /**
     * 获取所有子分组 id
     * @param $ids
     * @return mixed
     */
    public function getAllChildId($ids,$depth=0)
    {
        if($depth>2){
            return $this->allChildIds;
        }
        if(!is_array($ids)){
            $ids = [$ids];
        }

        $this->allChildIds = array_merge($this->allChildIds, $ids);

        $childIds = $this->model->where('p_id', 'in', $ids)->column('id');

        if(!$childIds){
            return $this->allChildIds;
        }

        return $this->getAllChildId($childIds,++$depth);
    }
    
}