<?php

namespace App\Models\Customer;

use App\Exceptions\ModelException;
use App\Models\Base\CustomerBaseModel;

class CustomerUserExtendModel extends CustomerBaseModel
{

    protected $table = 'customer_user_extend';
    protected $primaryKey = 'uid';

    protected $fillable = [
        'uid',
        'is_active',
        'fans_num',
        'follow_num',
        'updated_at',
    ];

    //是否活跃用户
    const IS_ACTIVE_YES = 1;
    const IS_ACTIVE_NO = 2;
    const IS_ACTIVE = [
        self::IS_ACTIVE_YES => '活跃',
        self::IS_ACTIVE_NO => '不活跃',
    ];

    //增加用户扩展信息
    function addExtend($aItem): \Illuminate\Database\Eloquent\Model|\Illuminate\Database\Eloquent\Builder|array|null
    {
        if(empty($aItem['uid'])) throw new ModelException('uid error');
        if($this->findItem($aItem['uid'],['uid'])) return null;    //已存在
        $sDateTime = date('Y-m-d H:i:s');
        $aItem['updated_at'] = $sDateTime;
        return $this->addItem($aItem);
    }

    //增加当前粉丝总数
    function incrFansNum($uid): int
    {
        $oExtend = $this->findItem($uid,'uid');
        if(!$oExtend) throw new ModelException('user extend not found');
        return $this->newQuery()->where('uid',$uid)->increment('fans_num');
    }

    //减去当前追随者总数
    function decrFansNum($uid): int
    {
        $oExtend = $this->findItem($uid,'uid');
        if(!$oExtend) throw new ModelException('user extend not found');
        return $this->newQuery()->where('uid',$uid)->decrement('fans_num');
    }

    //增加当前订阅总数
    function incrFollowNum($uid): int
    {
        $oExtend = $this->findItem($uid,'uid');
        if(!$oExtend) throw new ModelException('user extend not found');
        return $this->newQuery()->where('uid',$uid)->increment('follow_num');
    }

    //减去当前订阅总数
    function decrFollowNum($uid): int
    {
        $oExtend = $this->findItem($uid,'uid');
        if(!$oExtend) throw new ModelException('user extend not found');
        return $this->newQuery()->where('uid',$uid)->decrement('follow_num');
    }

}