<?php

namespace app\admin\controller\app\testpaper;

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

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

    public function _initialize()
    {
        parent::_initialize();
        $this->model = new \app\admin\model\app\testpaper\Group;
        $this->testpaperModel = new \app\admin\model\app\testpaper\Testpaper;
    }


    /**
     * 列表
     */
    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();

        $list = $this->model
            ->where($where)
            ->order($sort, $order)
            ->paginate($limit);


        $rows = $list->items();

        $ids = $this->model->field('id')->column('id');

        $default = [
            'id'=>0,
            'name'=>'未分组',
            'testpaper_count'=>$this->testpaperModel->where(['group_id'=>['NOT IN',$ids]])->count()
        ];

        array_unshift($rows,$default);

        $result = array("total" => $list->total(), "rows" => $rows,'group_ids'=>implode(",",$ids));

        return $this->success("获取成功",$result);
    }


    /**
     * 删除题库分组
     * @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);
        }
        $list = $this->model->where($pk, 'in', $ids)->select();

        $count = 0;
        Db::startTrans();
        try {
            foreach ($list as $item) {
                $this->testpaperModel->where([
                    'group_id'=>$item->id
                ])->update(['group_id'=>0]);
                $count += $item->delete();
            }
            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'));
    }
}