From 315d2104c85ae06f3bd0a49a8789cd8115f517ce Mon Sep 17 00:00:00 2001
From: Sambo Chea <sombochea@cubetiqs.com>
Date: Wed, 26 Aug 2020 21:10:52 +0700
Subject: [PATCH] Add money config and builder pattern for its properties

---
 .../cubetiqs/libra/moneyutils/MoneyConfig.kt  | 50 +++++++++++++++++--
 src/test/kotlin/MoneyTests.kt                 | 14 ++++++
 2 files changed, 59 insertions(+), 5 deletions(-)

diff --git a/src/main/kotlin/com/cubetiqs/libra/moneyutils/MoneyConfig.kt b/src/main/kotlin/com/cubetiqs/libra/moneyutils/MoneyConfig.kt
index c41a90b..5b6c5ce 100644
--- a/src/main/kotlin/com/cubetiqs/libra/moneyutils/MoneyConfig.kt
+++ b/src/main/kotlin/com/cubetiqs/libra/moneyutils/MoneyConfig.kt
@@ -2,14 +2,12 @@ package com.cubetiqs.libra.moneyutils
 
 /**
  * Default money config in static object.
+ * Sample parse format: USD=1,KHR=4000,EUR=0.99
  *
  * @author sombochea
  * @since 1.0
  */
 object MoneyConfig {
-    private const val SPLIT_ORD_1 = ','
-    private const val SPLIT_ORD_2 = '='
-
     /**
      * All money currencies and its rate are stored in memory state for exchange or compute the value.
      *
@@ -18,6 +16,22 @@ object MoneyConfig {
      */
     private val config: MutableMap<String, Double> = mutableMapOf()
 
+    /**
+     * Money properties for money config format
+     */
+    private var properties: MoneyConfigProperties? = null
+
+    val propertiesBuilder = MoneyConfigProperties.MoneyConfigPropertiesBuilder()
+
+    private fun getProperties(): MoneyConfigProperties {
+        return properties ?: propertiesBuilder.build()
+    }
+
+    fun setProperties(properties: MoneyConfigProperties): MoneyConfig {
+        this.properties = properties
+        return MoneyConfig
+    }
+
     /**
      * Parse the config string to currency's map within rates
      * Key is money's currency (String)
@@ -27,9 +41,9 @@ object MoneyConfig {
         if (clearAllStates) {
             this.config.clear()
         }
-        val rates = config.split(SPLIT_ORD_1)
+        val rates = config.split(getProperties().deliSplit)
         rates.map { i ->
-            val temp = i.split(SPLIT_ORD_2)
+            val temp = i.split(getProperties().deliEqual)
             if (temp.size == 2) {
                 val currency = temp[0].toUpperCase()
                 val value = temp[1].toDouble()
@@ -52,4 +66,30 @@ object MoneyConfig {
         return getConfig()[currency.toUpperCase()]
             ?: throw MoneyCurrencyStateException("money currency $currency is not valid!")
     }
+
+    class MoneyConfigProperties(
+        val deliEqual: Char,
+        val deliSplit: Char,
+    ) {
+        class MoneyConfigPropertiesBuilder(
+            private var deliEqual: Char? = null,
+            private var deliSplit: Char? = null,
+        ) {
+            fun setDeliEqual(deliEqual: Char) = apply { this.deliEqual = deliEqual }
+
+            private fun getDeliEqual(): Char {
+                return deliEqual ?: '='
+            }
+
+            fun setDeliSplit(deliSplit: Char) = apply { this.deliSplit = deliSplit }
+
+            private fun getDeliSplit(): Char {
+                return deliSplit ?: ','
+            }
+
+            fun build(): MoneyConfigProperties {
+                return MoneyConfigProperties(deliEqual = getDeliEqual(), deliSplit = getDeliSplit())
+            }
+        }
+    }
 }
\ No newline at end of file
diff --git a/src/test/kotlin/MoneyTests.kt b/src/test/kotlin/MoneyTests.kt
index 2898aa1..7fef8b8 100644
--- a/src/test/kotlin/MoneyTests.kt
+++ b/src/test/kotlin/MoneyTests.kt
@@ -1,4 +1,5 @@
 import com.cubetiqs.libra.moneyutils.Money
+import com.cubetiqs.libra.moneyutils.MoneyConfig
 import com.cubetiqs.libra.moneyutils.plus
 import com.cubetiqs.libra.moneyutils.times
 import com.cubetiqs.libra.moneyutils.timesAssign
@@ -13,5 +14,18 @@ class MoneyTests {
         money *= money
         println((money + money2) * money2)
         Assert.assertEquals(10, 10)
+
+        val properties = MoneyConfig
+            .MoneyConfigProperties
+            .MoneyConfigPropertiesBuilder()
+            .setDeliEqual(':')
+            .setDeliSplit(',')
+            .build()
+
+        MoneyConfig
+            .setProperties(properties)
+            .parse("USD:1,KHR:4000")
+
+        println(MoneyConfig.getConfig())
     }
 }
\ No newline at end of file