Emil
95 lines
2.3 KiB
TypeScript
95 lines
2.3 KiB
TypeScript
/**
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* Receipt utility functions (client-safe)
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*
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* These functions can be used in both client and server components.
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*/
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// Known Swedish merchants for special handling
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export const SYSTEMBOLAGET_PATTERNS = [
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'systembolaget',
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'systemet',
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'bolaget',
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]
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export const RESTAURANT_MCC_CODES = [5812, 5813, 5814]
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export const RESTAURANT_PATTERNS = [
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'restaurang',
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'restaurant',
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'café',
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'cafe',
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'bistro',
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'pizzeria',
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'sushi',
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'thai',
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'wok',
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'grill',
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'bar',
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'pub',
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'krog',
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'brasserie',
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'trattoria',
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'osteria',
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'matsal',
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'lunch',
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'middag',
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]
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/**
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* Check if a transaction MCC code indicates restaurant
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*/
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export function isRestaurantMCC(mccCode: number | null): boolean {
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if (!mccCode) return false
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return RESTAURANT_MCC_CODES.includes(mccCode)
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}
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/**
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* Calculate restaurant representation limits
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*
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* Swedish rules (2024):
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* - Max 60 kr/person för intern representation (lunch/middag)
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* - Max 180 kr/person för extern representation
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* - Max 180 kr/person för representationsgåvor
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*
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* For simplicity, we use 60 kr as the safe deductible limit per person
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*/
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export function calculateRepresentationLimits(
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totalAmount: number,
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persons: number
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): {
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deductibleAmount: number
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nonDeductibleAmount: number
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perPersonAmount: number
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maxDeductiblePerPerson: number
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} {
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const MAX_DEDUCTIBLE_PER_PERSON = 60
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const perPersonAmount = totalAmount / persons
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const deductiblePerPerson = Math.min(perPersonAmount, MAX_DEDUCTIBLE_PER_PERSON)
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const deductibleAmount = deductiblePerPerson * persons
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const nonDeductibleAmount = totalAmount - deductibleAmount
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return {
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deductibleAmount: Math.round(deductibleAmount * 100) / 100,
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nonDeductibleAmount: Math.round(nonDeductibleAmount * 100) / 100,
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perPersonAmount: Math.round(perPersonAmount * 100) / 100,
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maxDeductiblePerPerson: MAX_DEDUCTIBLE_PER_PERSON,
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}
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}
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/**
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* Detect if merchant is Systembolaget
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*/
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export function detectSystembolaget(merchantName: string): boolean {
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const name = merchantName.toLowerCase()
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return SYSTEMBOLAGET_PATTERNS.some((pattern) => name.includes(pattern))
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}
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/**
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* Detect if merchant is a restaurant
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*/
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export function detectRestaurant(merchantName: string): boolean {
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const name = merchantName.toLowerCase()
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return RESTAURANT_PATTERNS.some((pattern) => name.includes(pattern))
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}
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