222e5bb11a
完整的管理系统，包含账户管理、卡片管理、套餐管理、财务管理等功能模块。 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
120 lines
2.8 KiB
TypeScript
120 lines
2.8 KiB
TypeScript
/**
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* 业务计算工具函数
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*/
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/**
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* 计算佣金
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* @param amount 交易金额（分）
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* @param rate 佣金比例（0-100）
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* @param type 佣金类型：percentage-百分比, fixed-固定金额
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*/
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export function calculateCommission(
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amount: number,
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rate: number,
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type: 'percentage' | 'fixed' = 'percentage'
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): number {
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if (type === 'fixed') {
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return rate
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}
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return Math.floor((amount * rate) / 100)
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}
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/**
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* 计算折扣价
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* @param originalPrice 原价（分）
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* @param discount 折扣（0-100）
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*/
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export function calculateDiscountPrice(originalPrice: number, discount: number): number {
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return Math.floor((originalPrice * discount) / 100)
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}
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/**
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* 计算流量使用率
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* @param used 已用流量（MB）
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* @param total 总流量（MB）
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*/
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export function calculateFlowUsageRate(used: number, total: number): number {
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if (total === 0) return 0
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return Math.min(100, Math.round((used / total) * 100))
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}
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/**
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* 计算剩余天数
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* @param expireTime 过期时间
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*/
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export function calculateRemainingDays(expireTime: string): number {
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const now = new Date().getTime()
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const expire = new Date(expireTime).getTime()
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const diff = expire - now
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if (diff <= 0) return 0
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return Math.ceil(diff / (1000 * 60 * 60 * 24))
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}
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/**
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* 计算环比增长率
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* @param current 当前值
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* @param previous 上期值
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*/
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export function calculateGrowthRate(current: number, previous: number): number {
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if (previous === 0) return current > 0 ? 100 : 0
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return Math.round(((current - previous) / previous) * 100)
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}
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/**
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* 计算平均值
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* @param values 数值数组
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*/
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export function calculateAverage(values: number[]): number {
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if (values.length === 0) return 0
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const sum = values.reduce((acc, val) => acc + val, 0)
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return Math.round((sum / values.length) * 100) / 100
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}
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/**
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* 计算提现手续费
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* @param amount 提现金额（分）
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* @param feeRate 手续费率（0-100）
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* @param feeType 手续费类型：percentage-百分比, fixed-固定
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*/
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export function calculateWithdrawalFee(
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amount: number,
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feeRate: number,
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feeType: 'percentage' | 'fixed' = 'percentage'
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): number {
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if (feeType === 'fixed') {
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return feeRate
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}
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return Math.floor((amount * feeRate) / 100)
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}
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/**
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* 计算实际到账金额
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* @param amount 提现金额（分）
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* @param fee 手续费（分）
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*/
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export function calculateActualAmount(amount: number, fee: number): number {
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return Math.max(0, amount - fee)
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}
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/**
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* 计算分页偏移量
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* @param page 当前页
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* @param pageSize 每页数量
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*/
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export function calculateOffset(page: number, pageSize: number): number {
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return (page - 1) * pageSize
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}
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/**
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* 计算总页数
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* @param total 总记录数
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* @param pageSize 每页数量
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*/
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export function calculateTotalPages(total: number, pageSize: number): number {
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return Math.ceil(total / pageSize)
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}
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