<?php

namespace app\model;

class SaleLog extends Base
{
    protected $createTime = false;
    protected $updateTime = false;

    public static function getPageList($size = 20)
    {
        return self::alias('sl')
        ->join('goods g', 'g.id = sl.goods_id')
        ->order('sl.id desc')
        ->field('sl.*, g.name as goods_name')
        ->paginate([
            'list_rows'=> $size,
            'var_page' => 'page',
        ]);
    }

    //获取销售金额统计
    public static function getSales($start, $end)
    {
        if(empty($start) || empty($end)){
            return [];
        }

        return self::alias('sl')
        ->join('goods g', 'g.id = sl.goods_id')
        ->where('sl.sold_at', '>=', $start)
        ->where('sl.sold_at', '<=', $end)
        ->field('sl.sold_at, sum(sl.total_price) as total_sales')
        ->group('sl.sold_at')
        ->select();
    }

    public static function getSalesGoods($start, $end, $order = 'total_sales')
    {
        if(empty($start) || empty($end)){
            return [];
        }

        return self::alias('sl')
        ->join('goods g', 'g.id = sl.goods_id')
        ->where('sl.sold_at', '>=', $start)
        ->where('sl.sold_at', '<=', $end)
        ->field('g.name as goods_name, sum(sl.total_price) as total_sales, sum(sl.num) as total_num, sum(sl.num_small) as total_num_small')
        ->order("{$order} asc")
        ->group('sl.goods_id')
        ->select();
    }
}