xyzshop/helper/bonus/BonusAmount.php

<?php
/**
 * Created by PhpStorm.
 * User: stanley-king
 * Date: 2018/8/24
 * Time: 下午6:35
 */

namespace bonus;

use UnImplementsException;

class BonusAmount implements IMoneyCalc
{
    private $mDirty;
    private $mAmount;

    public function __construct($rates)
    {
        $this->mDirty = false;
        $this->mAmount = 0.00;

        $amount = 0.0;
        foreach ($rates as $key => $val) {
            $amount += $val;
        }
        $this->mAmount = intval(100 * $amount + 0.5) / 100;
    }

    public function add_bonuses($items)
    {
        foreach ($items as $item) {
            $bonus = \bonus\user_bonus::create_by_param($item);
            $amount = intval($bonus->remain_amount() * 100 + 0.5) / 100;

            if ($amount <= 0) continue;
            $this->mAmount += intval(100 * $amount + 0.5) / 100;
            $this->mDirty = true;
        }
    }

    public function is_enough(&$rate, $amount)
    {
        $rate = defaultBonusRate();
        $amount = intval($amount * 100 + 0.5);
        $tmp = intval($this->mAmount * 100 + 0.5);
        return $tmp >= $amount;
    }

    public function with_hold($rate, $amount)
    {
        $this->mAmount -= ($amount * 100 + 0.5) / 100;
        $this->mDirty = true;
    }

    public function find_rate($amount)
    {
        if ($this->is_enough($rate, $amount)) {
            return ['rate' => defaultBonusRate(), 'amount' => intval($amount * 100 + 0.5) / 100];
        } else {
            $amount = intval($amount * 100 + 0.5);
            return ['rate' => $rate, 'amount' => $amount / 100];
        }
    }

    public function format()
    {
        return [defaultBonusRate() => intval($this->mAmount * 100 + 0.5) / 100];
    }

    public function total()
    {
        return $this->mAmount;
    }

    public function dirty()
    {
        return $this->mDirty;
    }

    public function clean()
    {
        $this->mDirty = false;
    }

    public function calc_rates($amount)
    {
        throw new UnImplementsException(__METHOD__);
    }

    public function calc_money($price, &$rates)
    {
        throw new UnImplementsException(__METHOD__);
    }

    public function calc_price($price, &$rates)
    {
        throw new UnImplementsException(__METHOD__);
    }

    static function scale()
    {
        return (100 - self::PRED_RATE) / 100;
    }
}