36 lines
1.4 KiB
Kotlin
36 lines
1.4 KiB
Kotlin
package com.cubetiqs.money
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object MoneyExchangeUtils {
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fun exchange(exchangeFrom: StdMoney, exchangeToCurrency: StdMoney.Currency): StdMoney {
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val rateFrom = MoneyConfig.getRate(exchangeFrom.getCurrency())
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val rateTo = MoneyConfig.getRate(exchangeToCurrency)
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return Money(value = computeRate(rateFrom, rateTo, amountFrom = exchangeFrom.getValue()), currency = exchangeToCurrency)
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}
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private fun computeRate(rateFrom: Double, rateTo: Double, baseRate: Double = 1.0, amountFrom: Double = 1.0): Double {
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return amountFrom * ((baseRate / rateFrom) / (baseRate / rateTo))
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}
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fun getBaseCurrency(): StdMoney.Currency {
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return StdMoney.USD
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}
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/**
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* Compute the Base Exchange Price / Converter to any Rates.
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* Multiple differentiate exchange relation computation.
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* Example: A -> B -> C meant You can with all variables, but must find the based MEANT of its.
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*
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* Sample Explanation: Matrix Multiply
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* 1 USD -> 0.90 EUR
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* 1 USD -> 4000 KHR
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* If I want to exchange from EUR to KHR, I need.
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* 1 EUR -> 1 * (1 / 0.90) / (1 / 4000)
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*
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* @author sombochea
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* @since 1.0
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*/
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fun computeFromBaseRate(amountFrom: Double = 1.0, baseRate: Double = 1.0, rateFrom: Double, rateTo: Double): Double {
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// amount * ((baseRate / rateFrom) / (baseRate / rateTo))
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return amountFrom.times((baseRate.div(rateFrom)).div(baseRate.div(rateTo)))
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}
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} |