From aaf3c6aea823921d05ed438e727e744c5593c1ae Mon Sep 17 00:00:00 2001
From: chhoeung-mengsreang <chheoungmengsreang789@gmail.com>
Date: Tue, 30 Nov 2021 17:01:43 +0700
Subject: [PATCH] Task: add computeFromBaseRate function in money-modules

---
 .../com/cubetiqs/money/MoneyExchangeUtils.kt  | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/src/main/kotlin/com/cubetiqs/money/MoneyExchangeUtils.kt b/src/main/kotlin/com/cubetiqs/money/MoneyExchangeUtils.kt
index 19a7ceb..c869938 100644
--- a/src/main/kotlin/com/cubetiqs/money/MoneyExchangeUtils.kt
+++ b/src/main/kotlin/com/cubetiqs/money/MoneyExchangeUtils.kt
@@ -14,4 +14,23 @@ object MoneyExchangeUtils {
     fun getBaseCurrency(): StdMoney.Currency {
         return StdMoney.USD
     }
+
+    /**
+     * Compute the Base Exchange Price / Converter to any Rates.
+     * Multiple differentiate exchange relation computation.
+     * Example: A -> B -> C meant You can with all variables, but must find the based MEANT of its.
+     *
+     * Sample Explanation: Matrix Multiply
+     * 1 USD -> 0.90 EUR
+     * 1 USD -> 4000 KHR
+     * If I want to exchange from EUR to KHR, I need.
+     * 1 EUR -> 1 * (1 / 0.90) / (1 / 4000)
+     *
+     * @author sombochea
+     * @since 1.0
+     */
+    fun computeFromBaseRate(amountFrom: Double = 1.0, baseRate: Double = 1.0, rateFrom: Double, rateTo: Double): Double {
+        // amount * ((baseRate / rateFrom) / (baseRate / rateTo))
+        return amountFrom.times((baseRate.div(rateFrom)).div(baseRate.div(rateTo)))
+    }
 }
\ No newline at end of file