package com.ruoyi.system.utils;
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import java.time.LocalDateTime;
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import java.time.format.DateTimeFormatter;
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import java.util.concurrent.ThreadLocalRandom;
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/**
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* 订单号生成器
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*
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* @author mitao
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* @since 2025-12-16
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*/
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public class OrderCodeGenerator {
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private static final DateTimeFormatter ORDER_CODE_FORMATTER = DateTimeFormatter.ofPattern("yyyyMMddHHmmss");
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/**
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* 大礼包订单前缀
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*/
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public static final String PREFIX_BIG_GIFT = "BG";
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/**
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* 大礼包合并支付订单前缀
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*/
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public static final String PREFIX_BIG_GIFT_PAY = "BGP";
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/**
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* 实物商品订单前缀
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*/
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public static final String PREFIX_PHYSICAL_GOODS = "PG";
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/**
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* 大礼包尾款支付订单前缀
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*/
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public static final String PREFIX_BIG_GIFT_FINAL = "BGF";
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private OrderCodeGenerator() {
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// 私有构造函数，防止实例化
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}
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/**
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* 生成订单号
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*
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* @param prefix 订单号前缀
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* @return 订单号（格式：前缀 + yyyyMMddHHmmss + 4位随机数）
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*/
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public static String generate(String prefix) {
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String timestamp = LocalDateTime.now().format(ORDER_CODE_FORMATTER);
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int randomNum = ThreadLocalRandom.current().nextInt(1000, 10000);
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return prefix + timestamp + randomNum;
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}
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/**
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* 生成大礼包订单号
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*
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* @return 大礼包订单号
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*/
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public static String generateBigGiftOrderCode() {
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return generate(PREFIX_BIG_GIFT);
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}
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/**
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* 生成大礼包合并支付订单号
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*
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* @return 大礼包合并支付订单号
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*/
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public static String generateBigGiftPayOrderCode() {
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return generate(PREFIX_BIG_GIFT_PAY);
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}
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/**
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* 生成实物商品订单号
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*
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* @return 实物商品订单号
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*/
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public static String generatePhysicalGoodsOrderCode() {
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return generate(PREFIX_PHYSICAL_GOODS);
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}
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/**
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* 生成大礼包尾款支付订单号
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*
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* @return 大礼包尾款支付订单号
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*/
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public static String generateBigGiftFinalPayOrderCode() {
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return generate(PREFIX_BIG_GIFT_FINAL);
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}
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}
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