5be0616e78
- 支持提供商级别和渠道级别手续费率配置（FEE_RATE_PROVIDER_* / FEE_RATE_*） - 用户多付手续费，到账金额不变（充值 ¥100 + 1.6% = 实付 ¥101.60） - 前端显示手续费明细和实付金额 - 退款时按实付金额退款，余额扣减到账金额
105 lines
3.4 KiB
TypeScript
105 lines
3.4 KiB
TypeScript
import { prisma } from '@/lib/db';
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import { getEnv } from '@/lib/config';
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import { initPaymentProviders, paymentRegistry } from '@/lib/payment';
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import { getMethodFeeRate } from './fee';
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/**
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* 获取指定支付渠道的每日全平台限额（0 = 不限制）。
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* 优先级：环境变量显式配置 > provider 默认值 > process.env 兜底 > 0
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*/
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export function getMethodDailyLimit(paymentType: string): number {
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const env = getEnv();
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const key = `MAX_DAILY_AMOUNT_${paymentType.toUpperCase()}` as keyof typeof env;
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const val = env[key];
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if (typeof val === 'number') return val; // 明确配置（含 0）
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// 尝试从已注册的 provider 取默认值
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initPaymentProviders();
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const providerDefault = paymentRegistry.getDefaultLimit(paymentType);
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if (providerDefault?.dailyMax !== undefined) return providerDefault.dailyMax;
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// 兜底：process.env（支持未在 schema 中声明的动态渠道）
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const raw = process.env[`MAX_DAILY_AMOUNT_${paymentType.toUpperCase()}`];
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if (raw !== undefined) {
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const num = Number(raw);
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return Number.isFinite(num) && num >= 0 ? num : 0;
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}
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return 0; // 默认不限制
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}
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/**
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* 获取指定支付渠道的单笔限额（0 = 使用全局 MAX_RECHARGE_AMOUNT）。
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* 优先级：process.env MAX_SINGLE_AMOUNT_* > provider 默认值 > 0
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*/
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export function getMethodSingleLimit(paymentType: string): number {
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const raw = process.env[`MAX_SINGLE_AMOUNT_${paymentType.toUpperCase()}`];
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if (raw !== undefined) {
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const num = Number(raw);
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if (Number.isFinite(num) && num >= 0) return num;
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}
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initPaymentProviders();
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const providerDefault = paymentRegistry.getDefaultLimit(paymentType);
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if (providerDefault?.singleMax !== undefined) return providerDefault.singleMax;
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return 0; // 使用全局 MAX_RECHARGE_AMOUNT
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}
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export interface MethodLimitStatus {
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/** 每日限额，0 = 不限 */
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dailyLimit: number;
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/** 今日已使用金额 */
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used: number;
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/** 剩余每日额度，null = 不限 */
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remaining: number | null;
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/** 是否还可使用（false = 今日额度已满） */
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available: boolean;
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/** 单笔限额，0 = 使用全局配置 MAX_RECHARGE_AMOUNT */
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singleMax: number;
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/** 手续费率百分比，0 = 无手续费 */
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feeRate: number;
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}
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/**
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* 批量查询多个支付渠道的今日使用情况。
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* 一次 DB groupBy 完成，调用方按需传入渠道列表。
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*/
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export async function queryMethodLimits(
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paymentTypes: string[],
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): Promise<Record<string, MethodLimitStatus>> {
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const todayStart = new Date();
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todayStart.setUTCHours(0, 0, 0, 0);
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const usageRows = await prisma.order.groupBy({
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by: ['paymentType'],
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where: {
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paymentType: { in: paymentTypes },
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status: { in: ['PAID', 'RECHARGING', 'COMPLETED'] },
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paidAt: { gte: todayStart },
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},
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_sum: { amount: true },
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});
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const usageMap = Object.fromEntries(
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usageRows.map((r) => [r.paymentType, Number(r._sum.amount ?? 0)]),
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);
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const result: Record<string, MethodLimitStatus> = {};
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for (const type of paymentTypes) {
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const dailyLimit = getMethodDailyLimit(type);
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const singleMax = getMethodSingleLimit(type);
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const feeRate = getMethodFeeRate(type);
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const used = usageMap[type] ?? 0;
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const remaining = dailyLimit > 0 ? Math.max(0, dailyLimit - used) : null;
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result[type] = {
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dailyLimit,
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used,
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remaining,
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available: dailyLimit === 0 || used < dailyLimit,
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singleMax,
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feeRate,
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};
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}
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return result;
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}
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