chore: Remove unused utility modules and related test files

- Remove currency, logger, validation utilities, and base/test provider logic
- Delete associated tests and TypeScript definitions for deprecated modules
- Clean up exports in `src/utils` to reflect module removals
This commit is contained in:
2025-09-15 21:07:22 +02:00
parent b3368ba34f
commit 7fb45570a7
8 changed files with 1 additions and 999 deletions

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@@ -1,6 +1,6 @@
{ {
"name": "@xtr-dev/payload-billing", "name": "@xtr-dev/payload-billing",
"version": "0.1.1", "version": "0.1.2",
"description": "PayloadCMS plugin for billing and payment provider integrations with tracking and local testing", "description": "PayloadCMS plugin for billing and payment provider integrations with tracking and local testing",
"license": "MIT", "license": "MIT",
"type": "module", "type": "module",

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@@ -1,283 +0,0 @@
import type { TestProviderConfig} from '../types';
import { TestPaymentProvider } from '../providers/test/provider'
import { PaymentStatus } from '../types'
describe('TestPaymentProvider', () => {
let provider: TestPaymentProvider
let config: TestProviderConfig
beforeEach(() => {
config = {
autoComplete: true,
defaultDelay: 0,
enabled: true,
}
provider = new TestPaymentProvider(config)
})
afterEach(() => {
provider.clearStoredData()
})
describe('createPayment', () => {
it('should create a payment with succeeded status when autoComplete is true', async () => {
const payment = await provider.createPayment({
amount: 2000,
currency: 'USD',
description: 'Test payment',
})
expect(payment).toMatchObject({
amount: 2000,
currency: 'USD',
description: 'Test payment',
provider: 'test',
status: 'succeeded',
})
expect(payment.id).toBeDefined()
expect(payment.createdAt).toBeDefined()
expect(payment.updatedAt).toBeDefined()
expect(payment.providerData?.testMode).toBe(true)
})
it('should create a payment with pending status when autoComplete is false', async () => {
config.autoComplete = false
provider = new TestPaymentProvider(config)
const payment = await provider.createPayment({
amount: 1500,
currency: 'EUR',
})
expect(payment).toMatchObject({
amount: 1500,
currency: 'EUR',
status: 'pending',
})
})
it('should create a failed payment when simulateFailure is true', async () => {
const payment = await provider.createPayment({
amount: 1000,
currency: 'USD',
metadata: {
test: { simulateFailure: true },
},
})
expect(payment.status).toBe('failed')
expect(payment.providerData?.simulatedFailure).toBe(true)
})
it('should apply delay when specified', async () => {
const startTime = Date.now()
await provider.createPayment({
amount: 1000,
currency: 'USD',
metadata: {
test: { delayMs: 100 },
},
})
const endTime = Date.now()
expect(endTime - startTime).toBeGreaterThanOrEqual(100)
})
it('should store payment data', async () => {
const payment = await provider.createPayment({
amount: 2000,
currency: 'USD',
})
const stored = provider.getStoredPayment(payment.id)
expect(stored).toEqual(payment)
})
})
describe('retrievePayment', () => {
it('should retrieve an existing payment', async () => {
const payment = await provider.createPayment({
amount: 2000,
currency: 'USD',
})
const retrieved = await provider.retrievePayment(payment.id)
expect(retrieved).toEqual(payment)
})
it('should throw error for non-existent payment', async () => {
await expect(provider.retrievePayment('non-existent')).rejects.toThrow(
'Payment non-existent not found'
)
})
})
describe('cancelPayment', () => {
it('should cancel a pending payment', async () => {
config.autoComplete = false
provider = new TestPaymentProvider(config)
const payment = await provider.createPayment({
amount: 2000,
currency: 'USD',
})
const canceled = await provider.cancelPayment(payment.id)
expect(canceled.status).toBe('canceled')
expect(canceled.updatedAt).not.toBe(payment.updatedAt)
})
it('should not cancel a succeeded payment', async () => {
const payment = await provider.createPayment({
amount: 2000,
currency: 'USD',
})
await expect(provider.cancelPayment(payment.id)).rejects.toThrow(
'Cannot cancel a succeeded payment'
)
})
it('should throw error for non-existent payment', async () => {
await expect(provider.cancelPayment('non-existent')).rejects.toThrow(
'Payment non-existent not found'
)
})
})
describe('refundPayment', () => {
it('should create a full refund for succeeded payment', async () => {
const payment = await provider.createPayment({
amount: 2000,
currency: 'USD',
})
const refund = await provider.refundPayment(payment.id)
expect(refund).toMatchObject({
amount: 2000,
currency: 'USD',
paymentId: payment.id,
status: 'succeeded',
})
expect(refund.id).toBeDefined()
expect(refund.createdAt).toBeDefined()
// Check payment status is updated
const updatedPayment = await provider.retrievePayment(payment.id)
expect(updatedPayment.status).toBe('refunded')
})
it('should create a partial refund', async () => {
const payment = await provider.createPayment({
amount: 2000,
currency: 'USD',
})
const refund = await provider.refundPayment(payment.id, 1000)
expect(refund.amount).toBe(1000)
// Check payment status is updated to partially_refunded
const updatedPayment = await provider.retrievePayment(payment.id)
expect(updatedPayment.status).toBe('partially_refunded')
})
it('should not refund a non-succeeded payment', async () => {
config.autoComplete = false
provider = new TestPaymentProvider(config)
const payment = await provider.createPayment({
amount: 2000,
currency: 'USD',
})
await expect(provider.refundPayment(payment.id)).rejects.toThrow(
'Can only refund succeeded payments'
)
})
it('should not refund more than payment amount', async () => {
const payment = await provider.createPayment({
amount: 2000,
currency: 'USD',
})
await expect(provider.refundPayment(payment.id, 3000)).rejects.toThrow(
'Refund amount cannot exceed payment amount'
)
})
})
describe('handleWebhook', () => {
it('should handle webhook event', async () => {
const mockRequest = {
text: () => Promise.resolve(JSON.stringify({
type: 'payment.succeeded',
data: { paymentId: 'test_pay_123' }
}))
} as Request
const event = await provider.handleWebhook(mockRequest)
expect(event).toMatchObject({
type: 'payment.succeeded',
data: { paymentId: 'test_pay_123' },
provider: 'test',
verified: true,
})
expect(event.id).toBeDefined()
})
it('should throw error for invalid JSON', async () => {
const mockRequest = {
text: () => Promise.resolve('invalid json')
} as Request
await expect(provider.handleWebhook(mockRequest)).rejects.toThrow(
'Invalid JSON in webhook body'
)
})
it('should throw error when provider is disabled', async () => {
config.enabled = false
provider = new TestPaymentProvider(config)
const mockRequest = {
text: () => Promise.resolve('{}')
} as Request
await expect(provider.handleWebhook(mockRequest)).rejects.toThrow(
'Test provider is not enabled'
)
})
})
describe('data management', () => {
it('should clear all stored data', async () => {
await provider.createPayment({ amount: 1000, currency: 'USD' })
expect(provider.getAllPayments()).toHaveLength(1)
provider.clearStoredData()
expect(provider.getAllPayments()).toHaveLength(0)
expect(provider.getAllRefunds()).toHaveLength(0)
})
it('should return all payments and refunds', async () => {
const payment1 = await provider.createPayment({ amount: 1000, currency: 'USD' })
const payment2 = await provider.createPayment({ amount: 2000, currency: 'EUR' })
const refund = await provider.refundPayment(payment1.id)
const payments = provider.getAllPayments()
const refunds = provider.getAllRefunds()
expect(payments).toHaveLength(2)
expect(refunds).toHaveLength(1)
expect(refunds[0]).toEqual(refund)
})
})
})

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@@ -1,63 +0,0 @@
import type { CreatePaymentOptions, Payment, PaymentProvider, Refund, WebhookEvent } from '../../types'
export abstract class BasePaymentProvider implements PaymentProvider {
abstract name: string
protected formatAmount(amount: number, currency: string): number {
this.validateAmount(amount)
this.validateCurrency(currency)
return amount
}
protected log(level: 'error' | 'info' | 'warn', message: string, data?: Record<string, unknown>): void {
const logData = {
message,
provider: this.name,
...data,
}
console[level](`[${this.name.toUpperCase()}]`, logData)
}
protected validateAmount(amount: number): void {
if (amount <= 0 || !Number.isInteger(amount)) {
throw new Error('Amount must be a positive integer in cents')
}
}
protected validateCurrency(currency: string): void {
if (!currency || currency.length !== 3) {
throw new Error('Currency must be a valid 3-letter ISO currency code')
}
}
abstract cancelPayment(id: string): Promise<Payment>
abstract createPayment(options: CreatePaymentOptions): Promise<Payment>
abstract handleWebhook(request: Request, signature?: string): Promise<WebhookEvent>
abstract refundPayment(id: string, amount?: number): Promise<Refund>
abstract retrievePayment(id: string): Promise<Payment>
}
export function createProviderRegistry() {
const providers = new Map<string, PaymentProvider>()
return {
register(provider: PaymentProvider): void {
providers.set(provider.name, provider)
},
get(name: string): PaymentProvider | undefined {
return providers.get(name)
},
getAll(): PaymentProvider[] {
return Array.from(providers.values())
},
has(name: string): boolean {
return providers.has(name)
}
}
}
export const providerRegistry = createProviderRegistry()

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@@ -1,225 +0,0 @@
import type {
CreatePaymentOptions,
Payment,
PaymentStatus,
Refund,
TestProviderConfig,
WebhookEvent
} from '../../types';
import {
RefundStatus
} from '../../types'
import { BasePaymentProvider } from '../base/provider'
interface TestPaymentData {
delayMs?: number
failAfterMs?: number
simulateFailure?: boolean
}
export class TestPaymentProvider extends BasePaymentProvider {
private config: TestProviderConfig
private payments = new Map<string, Payment>()
private refunds = new Map<string, Refund>()
name = 'test'
constructor(config: TestProviderConfig) {
super()
this.config = config
}
private sleep(ms: number): Promise<void> {
return new Promise(resolve => setTimeout(resolve, ms))
}
async cancelPayment(id: string): Promise<Payment> {
const payment = this.payments.get(id)
if (!payment) {
throw new Error(`Payment ${id} not found`)
}
if (payment.status === 'succeeded') {
throw new Error('Cannot cancel a succeeded payment')
}
const canceledPayment = {
...payment,
status: 'canceled' as PaymentStatus,
updatedAt: new Date().toISOString()
}
this.payments.set(id, canceledPayment)
this.log('info', 'Payment canceled', { paymentId: id })
return canceledPayment
}
clearStoredData(): void {
this.payments.clear()
this.refunds.clear()
this.log('info', 'Test data cleared')
}
async createPayment(options: CreatePaymentOptions): Promise<Payment> {
const testData = options.metadata?.test as TestPaymentData || {}
const delay = testData.delayMs ?? this.config.defaultDelay ?? 0
if (delay > 0) {
await this.sleep(delay)
}
const shouldFail = testData.simulateFailure ??
(this.config.simulateFailures && Math.random() < (this.config.failureRate ?? 0.1))
const paymentId = `test_pay_${Date.now()}_${Math.random().toString(36).substring(7)}`
const payment: Payment = {
id: paymentId,
amount: options.amount,
createdAt: new Date().toISOString(),
currency: options.currency,
customer: options.customer,
description: options.description,
metadata: options.metadata,
provider: this.name,
providerData: {
autoCompleted: this.config.autoComplete,
delayApplied: delay,
simulatedFailure: shouldFail,
testMode: true
},
status: shouldFail ? 'failed' : (this.config.autoComplete ? 'succeeded' : 'pending'),
updatedAt: new Date().toISOString()
}
this.payments.set(paymentId, payment)
this.log('info', 'Payment created', {
amount: options.amount,
currency: options.currency,
paymentId,
status: payment.status
})
// Simulate async status updates if configured
if (testData.failAfterMs && !shouldFail) {
setTimeout(() => {
const updatedPayment = { ...payment, status: 'failed' as PaymentStatus, updatedAt: new Date().toISOString() }
this.payments.set(paymentId, updatedPayment)
this.log('info', 'Payment failed after delay', { paymentId })
}, testData.failAfterMs)
}
return payment
}
getAllPayments(): Payment[] {
return Array.from(this.payments.values())
}
getAllRefunds(): Refund[] {
return Array.from(this.refunds.values())
}
// Test-specific methods
getStoredPayment(id: string): Payment | undefined {
return this.payments.get(id)
}
getStoredRefund(id: string): Refund | undefined {
return this.refunds.get(id)
}
async handleWebhook(request: Request, signature?: string): Promise<WebhookEvent> {
if (!this.config.enabled) {
throw new Error('Test provider is not enabled')
}
// For test provider, we'll simulate webhook events
const body = await request.text()
let eventData: Record<string, unknown>
try {
eventData = JSON.parse(body)
} catch (error) {
throw new Error('Invalid JSON in webhook body')
}
const event: WebhookEvent = {
id: `test_evt_${Date.now()}_${Math.random().toString(36).substring(7)}`,
type: (eventData.type as string) || 'payment.status_changed',
data: eventData,
provider: this.name,
verified: true // Test provider always considers webhooks verified
}
this.log('info', 'Webhook received', {
type: event.type,
dataKeys: Object.keys(event.data),
eventId: event.id
})
return event
}
async refundPayment(id: string, amount?: number): Promise<Refund> {
const payment = this.payments.get(id)
if (!payment) {
throw new Error(`Payment ${id} not found`)
}
if (payment.status !== 'succeeded') {
throw new Error('Can only refund succeeded payments')
}
const refundAmount = amount ?? payment.amount
if (refundAmount > payment.amount) {
throw new Error('Refund amount cannot exceed payment amount')
}
const refundId = `test_ref_${Date.now()}_${Math.random().toString(36).substring(7)}`
const refund: Refund = {
id: refundId,
amount: refundAmount,
createdAt: new Date().toISOString(),
currency: payment.currency,
paymentId: id,
providerData: {
autoCompleted: this.config.autoComplete,
testMode: true
},
status: this.config.autoComplete ? 'succeeded' : 'pending'
}
this.refunds.set(refundId, refund)
// Update payment status
const newPaymentStatus: PaymentStatus = refundAmount === payment.amount ? 'refunded' : 'partially_refunded'
const updatedPayment = {
...payment,
status: newPaymentStatus,
updatedAt: new Date().toISOString()
}
this.payments.set(id, updatedPayment)
this.log('info', 'Refund created', {
amount: refundAmount,
paymentId: id,
refundId,
status: refund.status
})
return refund
}
async retrievePayment(id: string): Promise<Payment> {
const payment = this.payments.get(id)
if (!payment) {
throw new Error(`Payment ${id} not found`)
}
return payment
}
}

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@@ -1,130 +0,0 @@
/**
* Currency utility functions for payment processing
*/
// Common currency configurations
export const CURRENCY_CONFIG = {
AUD: { name: 'Australian Dollar', decimals: 2, symbol: 'A$' },
CAD: { name: 'Canadian Dollar', decimals: 2, symbol: 'C$' },
CHF: { name: 'Swiss Franc', decimals: 2, symbol: 'Fr' },
DKK: { name: 'Danish Krone', decimals: 2, symbol: 'kr' },
EUR: { name: 'Euro', decimals: 2, symbol: '€' },
GBP: { name: 'British Pound', decimals: 2, symbol: '£' },
JPY: { name: 'Japanese Yen', decimals: 0, symbol: '¥' },
NOK: { name: 'Norwegian Krone', decimals: 2, symbol: 'kr' },
SEK: { name: 'Swedish Krona', decimals: 2, symbol: 'kr' },
USD: { name: 'US Dollar', decimals: 2, symbol: '$' },
} as const
export type SupportedCurrency = keyof typeof CURRENCY_CONFIG
/**
* Validates if a currency code is supported
*/
export function isSupportedCurrency(currency: string): currency is SupportedCurrency {
return currency in CURRENCY_CONFIG
}
/**
* Validates currency format (3-letter ISO code)
*/
export function isValidCurrencyCode(currency: string): boolean {
return /^[A-Z]{3}$/.test(currency)
}
/**
* Converts amount from cents to major currency unit
*/
export function fromCents(amount: number, currency: string): number {
if (!isValidCurrencyCode(currency)) {
throw new Error(`Invalid currency code: ${currency}`)
}
const config = CURRENCY_CONFIG[currency as SupportedCurrency]
if (!config) {
// Default to 2 decimals for unknown currencies
return amount / 100
}
return config.decimals === 0 ? amount : amount / Math.pow(10, config.decimals)
}
/**
* Converts amount from major currency unit to cents
*/
export function toCents(amount: number, currency: string): number {
if (!isValidCurrencyCode(currency)) {
throw new Error(`Invalid currency code: ${currency}`)
}
const config = CURRENCY_CONFIG[currency as SupportedCurrency]
if (!config) {
// Default to 2 decimals for unknown currencies
return Math.round(amount * 100)
}
return config.decimals === 0
? Math.round(amount)
: Math.round(amount * Math.pow(10, config.decimals))
}
/**
* Formats amount for display with currency symbol
*/
export function formatAmount(amount: number, currency: string, options?: {
showCode?: boolean
showSymbol?: boolean
}): string {
const { showCode = false, showSymbol = true } = options || {}
if (!isValidCurrencyCode(currency)) {
throw new Error(`Invalid currency code: ${currency}`)
}
const majorAmount = fromCents(amount, currency)
const config = CURRENCY_CONFIG[currency as SupportedCurrency]
let formatted = majorAmount.toFixed(config?.decimals ?? 2)
if (showSymbol && config?.symbol) {
formatted = `${config.symbol}${formatted}`
}
if (showCode) {
formatted += ` ${currency}`
}
return formatted
}
/**
* Gets currency information
*/
export function getCurrencyInfo(currency: string) {
if (!isValidCurrencyCode(currency)) {
throw new Error(`Invalid currency code: ${currency}`)
}
return CURRENCY_CONFIG[currency as SupportedCurrency] || {
name: currency,
decimals: 2,
symbol: currency
}
}
/**
* Validates amount is positive and properly formatted
*/
export function validateAmount(amount: number): void {
if (!Number.isFinite(amount)) {
throw new Error('Amount must be a finite number')
}
if (amount <= 0) {
throw new Error('Amount must be positive')
}
if (!Number.isInteger(amount)) {
throw new Error('Amount must be an integer (in cents)')
}
}

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@@ -1,3 +0,0 @@
export * from './currency'
export * from './logger'
export * from './validation'

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@@ -1,113 +0,0 @@
/**
* Structured logging utilities for the billing plugin
*/
export type LogLevel = 'debug' | 'error' | 'info' | 'warn'
export interface LogContext {
[key: string]: unknown
amount?: number
currency?: string
customerId?: string
invoiceId?: string
paymentId?: string
provider?: string
refundId?: string
webhookId?: string
}
export interface Logger {
debug(message: string, context?: LogContext): void
error(message: string, context?: LogContext): void
info(message: string, context?: LogContext): void
warn(message: string, context?: LogContext): void
}
/**
* Creates a structured logger with consistent formatting
*/
export function createLogger(namespace: string = 'BILLING'): Logger {
const log = (level: LogLevel, message: string, context: LogContext = {}) => {
const timestamp = new Date().toISOString()
const logData = {
level: level.toUpperCase(),
message,
namespace,
timestamp,
...context,
}
// Use console methods based on log level
const consoleMethod = console[level] || console.log
consoleMethod(`[${namespace}] ${message}`, logData)
}
return {
debug: (message: string, context?: LogContext) => log('debug', message, context),
error: (message: string, context?: LogContext) => log('error', message, context),
info: (message: string, context?: LogContext) => log('info', message, context),
warn: (message: string, context?: LogContext) => log('warn', message, context),
}
}
/**
* Default logger instance for the plugin
*/
export const logger = createLogger('BILLING')
/**
* Creates a provider-specific logger
*/
export function createProviderLogger(providerName: string): Logger {
return createLogger(`BILLING:${providerName.toUpperCase()}`)
}
/**
* Log payment operations with consistent structure
*/
export function logPaymentOperation(
operation: string,
paymentId: string,
provider: string,
context?: LogContext
) {
logger.info(`Payment ${operation}`, {
operation,
paymentId,
provider,
...context,
})
}
/**
* Log webhook events with consistent structure
*/
export function logWebhookEvent(
provider: string,
eventType: string,
webhookId: string,
context?: LogContext
) {
logger.info(`Webhook received`, {
eventType,
provider,
webhookId,
...context,
})
}
/**
* Log errors with consistent structure
*/
export function logError(
error: Error,
operation: string,
context?: LogContext
) {
logger.error(`Operation failed: ${operation}`, {
error: error.message,
operation,
stack: error.stack,
...context,
})
}

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@@ -1,181 +0,0 @@
/**
* Validation utilities for billing data
*/
import { z } from 'zod'
import { isValidCurrencyCode } from './currency'
/**
* Zod schema for payment creation options
*/
export const createPaymentSchema = z.object({
amount: z.number().int().positive('Amount must be positive').min(1, 'Amount must be at least 1 cent'),
cancelUrl: z.string().url('Invalid cancel URL').optional(),
currency: z.string().length(3, 'Currency must be 3 characters').regex(/^[A-Z]{3}$/, 'Currency must be uppercase'),
customer: z.string().optional(),
description: z.string().max(500, 'Description too long').optional(),
metadata: z.record(z.unknown()).optional(),
returnUrl: z.string().url('Invalid return URL').optional(),
})
/**
* Zod schema for customer data
*/
export const customerSchema = z.object({
name: z.string().max(100, 'Name too long').optional(),
address: z.object({
city: z.string().max(50).optional(),
country: z.string().length(2, 'Country must be 2 characters').regex(/^[A-Z]{2}$/, 'Country must be uppercase').optional(),
line1: z.string().max(100).optional(),
line2: z.string().max(100).optional(),
postal_code: z.string().max(20).optional(),
state: z.string().max(50).optional(),
}).optional(),
email: z.string().email('Invalid email address').optional(),
metadata: z.record(z.unknown()).optional(),
phone: z.string().max(20, 'Phone number too long').optional(),
})
/**
* Zod schema for invoice items
*/
export const invoiceItemSchema = z.object({
description: z.string().min(1, 'Description is required').max(200, 'Description too long'),
quantity: z.number().int().positive('Quantity must be positive'),
unitAmount: z.number().int().min(0, 'Unit amount must be non-negative'),
})
/**
* Zod schema for invoice creation
*/
export const invoiceSchema = z.object({
currency: z.string().length(3).regex(/^[A-Z]{3}$/),
customer: z.string().min(1, 'Customer is required'),
dueDate: z.string().datetime().optional(),
items: z.array(invoiceItemSchema).min(1, 'At least one item is required'),
metadata: z.record(z.unknown()).optional(),
notes: z.string().max(1000).optional(),
taxAmount: z.number().int().min(0).default(0),
})
/**
* Validates payment creation data
*/
export function validateCreatePayment(data: unknown) {
const result = createPaymentSchema.safeParse(data)
if (!result.success) {
throw new Error(`Invalid payment data: ${result.error.issues.map(i => i.message).join(', ')}`)
}
// Additional currency validation
if (!isValidCurrencyCode(result.data.currency)) {
throw new Error(`Unsupported currency: ${result.data.currency}`)
}
return result.data
}
/**
* Validates customer data
*/
export function validateCustomer(data: unknown) {
const result = customerSchema.safeParse(data)
if (!result.success) {
throw new Error(`Invalid customer data: ${result.error.issues.map(i => i.message).join(', ')}`)
}
return result.data
}
/**
* Validates invoice data
*/
export function validateInvoice(data: unknown) {
const result = invoiceSchema.safeParse(data)
if (!result.success) {
throw new Error(`Invalid invoice data: ${result.error.issues.map(i => i.message).join(', ')}`)
}
// Additional currency validation
if (!isValidCurrencyCode(result.data.currency)) {
throw new Error(`Unsupported currency: ${result.data.currency}`)
}
return result.data
}
/**
* Validates webhook signature format
*/
export function validateWebhookSignature(signature: string, provider: string): void {
if (!signature) {
throw new Error(`Missing webhook signature for ${provider}`)
}
switch (provider) {
case 'mollie':
if (signature.length < 32) {
throw new Error('Invalid Mollie webhook signature length')
}
break
case 'stripe':
if (!signature.startsWith('t=')) {
throw new Error('Invalid Stripe webhook signature format')
}
break
case 'test':
// Test provider accepts any signature
break
default:
throw new Error(`Unknown provider: ${provider}`)
}
}
/**
* Validates payment provider name
*/
export function validateProviderName(provider: string): void {
const validProviders = ['stripe', 'mollie', 'test']
if (!validProviders.includes(provider)) {
throw new Error(`Invalid provider: ${provider}. Must be one of: ${validProviders.join(', ')}`)
}
}
/**
* Validates payment amount and currency combination
*/
export function validateAmountAndCurrency(amount: number, currency: string): void {
if (!Number.isInteger(amount) || amount <= 0) {
throw new Error('Amount must be a positive integer')
}
if (!isValidCurrencyCode(currency)) {
throw new Error('Invalid currency code')
}
// Validate minimum amounts for different currencies
const minimums: Record<string, number> = {
EUR: 50, // €0.50
GBP: 30, // £0.30
JPY: 50, // ¥50
USD: 50, // $0.50
}
const minimum = minimums[currency] || 50
if (amount < minimum) {
throw new Error(`Amount too small for ${currency}. Minimum: ${minimum} cents`)
}
}
/**
* Validates refund amount against original payment
*/
export function validateRefundAmount(refundAmount: number, paymentAmount: number): void {
if (!Number.isInteger(refundAmount) || refundAmount <= 0) {
throw new Error('Refund amount must be a positive integer')
}
if (refundAmount > paymentAmount) {
throw new Error('Refund amount cannot exceed original payment amount')
}
}