<?php
/**
 *【线下培训-后台】班级成员删除
 * @author: houyingcai
 * @email:     594609175@qq.com
 * @date :  2017-08-29 10:03:53
 * @version $Id$
 */

namespace Apicp\Controller\Team;

use Common\Service\EducationService;
use Common\Service\RightUsersService;
use Common\Service\SignService;

class DeleteController extends \Apicp\Controller\AbstractController
{

    // 用户报名状态：未报名
    const SIGN_NO = 0;
    // 用户报名状态：报名成功
    const SIGN_SUCCESS = 1;

    public function Index_post()
    {

        $ru_ids = I('post.ru_ids');
        $right_users_server = new RightUsersService();
        $sign_server = new SignService();
        // 班级人员ID不能为空
        if (empty($ru_ids)) {

            E('_EMPTY_RU_IDS');
        }

        $right_cond = [
            'ru_id' => $ru_ids
        ];

        $right_users = $right_users_server->list_by_conds($right_cond);

        $ed_id = 0;
        try {

            // 事务开始
            $right_users_server->start_trans();

            // 执行删除操作
            $rows = $right_users_server->delete($ru_ids);
            // 如果删除成功，更新培训表中的已参与人员数量
            if ($rows) {
                $ed_id = $right_users[0]['ed_id'];
                $education_service = new EducationService();
                // 获取培训数据
                $education = $education_service->get($ed_id);
                $count = 0;
                $ed_join_count = 0;
                foreach ($right_users as $value) {
                    $ed_join_count++;
                    // 用户报名状态
                    $sign_up_status = $right_users_server->get_sign_up_status($education, $value);
                    if (self::SIGN_SUCCESS == $sign_up_status) {

                        $count++;
                    }
                }
                // 删除签到记录
                $del_uids = array_column($right_users, 'ru_uid');
                if (!empty($del_uids)) {
                    // 根据用户ID和培训ID删除签到记录
                    $where = [
                        'ed_id' => $ed_id,
                        'sign_uid' => $del_uids
                    ];

                    $del_count = $sign_server->count_by_conds($where);
                    // 如果记录存在，进行删除
                    if ($del_count) {
                        $sign_server->delete_by_conds($where);
                    }
                }

                // 根据培训ID更新应参加人数
                $conds = ['ed_id' => $ed_id];
                // 更新应参与人数
                $update_data['ed_join_count'] = $education['ed_join_count'] - $ed_join_count;
                $education_service->update_by_conds($conds, $update_data);

                // 已参与人数减去删除人数不为负数
                if ($count && ($education['ed_joined_count'] - $count >= 0)) {

                    // 待更新数据
                    $update_data = [
                        'ed_joined_count' => $education['ed_joined_count'] - $count
                    ];
                    // 更新培训已参与人数
                    $education_service->update($ed_id, $update_data);
                }

            }

            // 提交事务
            $right_users_server->commit();

        } catch (\Exception $e) {

            $right_users_server->rollback();

            return false;
        }

        if ($ed_id) {
            // 更新首页推荐权限
            $right_users_server->recommender($ed_id);
        }

        return true;
    }
}