<?php

namespace app\admin\model\course;

use think\Model;

class GroupBind extends Model
{


    // 表名
    protected $name = 'course_bind_group';

    // 自动写入时间戳字段
    protected $autoWriteTimestamp = 'integer';

    // 定义时间戳字段名
    protected $createTime = 'createtime';
    protected $updateTime = false;
    protected $deleteTime = false;

    // 追加属性
    protected $append = [

    ];


    public function course()
    {
        return $this->belongsTo('Course', 'course_id', 'id', [], 'RIGHT')->setEagerlyType(0);
    }

    /**
     * 通过内容ID设置绑定
     * @param $courseId 内容ID
     * @param $column 专栏
     * @return void
     */
    public function setCourseBindGroup($courseId,$groupIds){

        //删除旧的
        $courseBindGroupIds = $this->getCourseBindGroup($courseId);
        if(!empty($courseBindGroupIds)){
            foreach ($courseBindGroupIds as $groupId){
                if(!in_array($groupId,$groupIds)){
                    self::where([
                        'group_id'=>$groupId,
                        'course_id'=>$courseId,
                    ])->delete();
                }
            }
        }


        //添加新的
        if(!empty($groupIds)){
            foreach ($groupIds as $groupId){
                $this->setGroupBindCourse($groupId,[$courseId]);
            }
        }
    }

    /**
     * 通过分组ID设置绑定
     * @param $courseId 内容ID
     * @param $column 专栏
     * @return void
     */
    public function setGroupBindCourse($groupId,$courseIds){
        $bindCourseId = $this->getGroupBindCourse($groupId);
        if(!empty($courseIds)){
            foreach ($courseIds as $item){
                if(!in_array($item,$bindCourseId)){
                    $row = [
                        'uniacid'=>UNIACID,
                        'course_id'=>$item,
                        'group_id'=>$groupId,
                        'createtime'=>time(),
                    ];
                    $row['sort']=$this->defineSort($groupId);
                    self::insert($row);
                }
            }
        }
        return true;
    }

    /**
     *  获取排序
     * @return void
     */
    public function defineSort($columnId){
        $maxItem = self::where([
            'group_id'=>$columnId
        ])->field("sort")->order("sort desc")->find();

        if(!$maxItem){
            return 0;
        }

        return $maxItem['sort'] + 1;
    }

    /**
     * 获取内容绑定分组
     * @param $courseId
     * @return array
     */
    public function getCourseBindGroup($courseId){

        $groupIds = self::where(['course_id'=>$courseId])->field('group_id')->select();

        if(!$groupIds){
            return [];
        }

        $ids = [];
        foreach ($groupIds as $id){
            $ids[] = $id['group_id'];
        }

        return $ids;
    }

    /**
     * 获取分组绑定内容
     * @param $courseId
     * @return array
     */
    public function getGroupBindCourse($groupId){

        $courseIds = self::where(['group_id'=>$groupId])->field('course_id')->select();

        if(!$courseIds){
            return [];
        }

        $ids = [];
        foreach ($courseIds as $id){
            $ids[] = $id['course_id'];
        }

        return $ids;
    }

    /**
     * 获取分组绑定内容数量
     * @param $courseId
     * @return mixed
     */
    public function groupGetCourseBindCount($groupId){
        return self::where(['group_id'=>$groupId])->count();
    }

    /**
     * 取消某分组绑定的内容(全部)
     * @param $groupId
     * @return mixed
     */
    public function groupDelCourseBind($groupId){
        return self::where(['group_id'=>$groupId])->delete();
    }

    /**
     * 取消分组与内容的绑定(单个)
     * @param $groupId
     * @return mixed
     */
    public function groupCancelCourse($groupId,$courseId){
        return self::where(['group_id'=>$groupId,'course_id'=>$courseId])->delete();
    }
}