59 lines
1.8 KiB
JavaScript
59 lines
1.8 KiB
JavaScript
export function safeTruncate(num, decimals = 2) {
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if (Number.isNaN(num) || !Number.isFinite(num))
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return '0.00'
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const factor = 10 ** decimals
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const scaled = Math.trunc(num * factor)
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return (scaled / factor).toFixed(decimals)
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}
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function toTruncatedCents(num) {
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if (Number.isNaN(num) || !Number.isFinite(num))
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return 0
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return Math.trunc((num + Number.EPSILON) * 100)
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}
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function centsToFixed(cents) {
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return (cents / 100).toFixed(2)
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}
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function calculatePlatformOverpricingCost(price, config) {
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if (price <= config.p_pricing_standard)
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return 0
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return (price - config.p_pricing_standard) * config.p_overpricing_ratio
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}
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function calculateSuperiorOverpricingCost(price, config) {
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if (config.a_overpricing_ratio <= 0)
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return 0
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if (price <= config.a_pricing_standard)
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return 0
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if (config.a_pricing_end <= config.a_pricing_standard)
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return 0
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const superiorRangeAmount = Math.min(price, config.a_pricing_end) - config.a_pricing_standard
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return Math.max(0, superiorRangeAmount) * config.a_overpricing_ratio
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}
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export function calculatePromotionPricing(priceInput, config) {
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if (!config)
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return { costPrice: '0.00', promotionRevenue: '0.00' }
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const price = Number(priceInput)
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if (!Number.isFinite(price))
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return { costPrice: '0.00', promotionRevenue: '0.00' }
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const baseCost = Number(config.cost_price) || 0
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const platformOverpricingCost = calculatePlatformOverpricingCost(price, config)
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const superiorOverpricingCost = calculateSuperiorOverpricingCost(price, config)
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const totalCost = baseCost + platformOverpricingCost + superiorOverpricingCost
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const priceCents = toTruncatedCents(price)
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const costCents = toTruncatedCents(totalCost)
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const revenueCents = priceCents - costCents
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return {
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costPrice: centsToFixed(costCents),
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promotionRevenue: centsToFixed(revenueCents),
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}
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}
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