package utils

import (
	"fmt"
	"math/rand"
	"time"
)

func GenerateOrderNumber() string {
	const prefix = "order"
	const length = 24
	rand.Seed(time.Now().UnixNano())

	// 生成后缀的长度
	suffixLength := length - len(prefix)
	suffix := make([]byte, suffixLength)

	// 填充随机数字
	for i := 0; i < suffixLength; i++ {
		suffix[i] = byte(rand.Intn(10)) + '0'
	}

	return prefix + string(suffix)
}
func GenerateOrderRefundNumber() string {
	const prefix = "orderRefund"
	const length = 24
	rand.Seed(time.Now().UnixNano())

	// 生成后缀的长度
	suffixLength := length - len(prefix)
	suffix := make([]byte, suffixLength)

	// 填充随机数字
	for i := 0; i < suffixLength; i++ {
		suffix[i] = byte(rand.Intn(10)) + '0'
	}

	return prefix + string(suffix)
}

// ConvertCentsToYuan 将金额从分转换为元并保留两位小数 阿里支付用
func ConvertCentsToYuan(amountInCents int) string {
	amountInYuan := float64(amountInCents) / 100
	return fmt.Sprintf("%.2f", amountInYuan)
}