From 4e903b7bd19dd9daf7172ab06fe2e52b6b1fdb60 Mon Sep 17 00:00:00 2001
From: Sergey Nastich <nastich@users.noreply.github.com>
Date: Tue, 21 Aug 2018 18:17:13 -0400
Subject: Add json formats for country code and currency code (#197)

---
 src/main/scala/xyz/driver/core/json.scala     | 11 +++++++++
 src/test/scala/xyz/driver/core/JsonTest.scala | 34 +++++++++++++++++++++++++--
 2 files changed, 43 insertions(+), 2 deletions(-)

diff --git a/src/main/scala/xyz/driver/core/json.scala b/src/main/scala/xyz/driver/core/json.scala
index 959239e..e4a0cef 100644
--- a/src/main/scala/xyz/driver/core/json.scala
+++ b/src/main/scala/xyz/driver/core/json.scala
@@ -8,6 +8,7 @@ import akka.http.scaladsl.model.Uri.Path
 import akka.http.scaladsl.server.PathMatcher.{Matched, Unmatched}
 import akka.http.scaladsl.server._
 import akka.http.scaladsl.unmarshalling.Unmarshaller
+import com.neovisionaries.i18n.{CountryCode, CurrencyCode}
 import enumeratum._
 import eu.timepit.refined.api.{Refined, Validate}
 import eu.timepit.refined.collection.NonEmpty
@@ -19,6 +20,7 @@ import xyz.driver.core.domain.{Email, PhoneNumber}
 import xyz.driver.core.rest.errors._
 import xyz.driver.core.time.{Time, TimeOfDay}
 
+import scala.reflect.{ClassTag, classTag}
 import scala.reflect.runtime.universe._
 import scala.util.Try
 
@@ -234,6 +236,10 @@ object json {
       JsString(obj.getHostAddress)
   }
 
+  implicit val countryCodeFormat: JsonFormat[CountryCode] = javaEnumFormat[CountryCode]
+
+  implicit val currencyCodeFormat: JsonFormat[CurrencyCode] = javaEnumFormat[CurrencyCode]
+
   object enumeratum {
 
     def enumUnmarshaller[T <: EnumEntry](enum: Enum[T]): Unmarshaller[String, T] =
@@ -281,6 +287,11 @@ object json {
     }
   }
 
+  def javaEnumFormat[T <: java.lang.Enum[_]: ClassTag]: JsonFormat[T] = {
+    val values = classTag[T].runtimeClass.asInstanceOf[Class[T]].getEnumConstants
+    new EnumJsonFormat[T](values.map(v => v.name() -> v): _*)
+  }
+
   class ValueClassFormat[T: TypeTag](writeValue: T => BigDecimal, create: BigDecimal => T) extends JsonFormat[T] {
     def write(valueClass: T) = JsNumber(writeValue(valueClass))
     def read(json: JsValue): T = json match {
diff --git a/src/test/scala/xyz/driver/core/JsonTest.scala b/src/test/scala/xyz/driver/core/JsonTest.scala
index 2c85560..330f6ed 100644
--- a/src/test/scala/xyz/driver/core/JsonTest.scala
+++ b/src/test/scala/xyz/driver/core/JsonTest.scala
@@ -2,11 +2,12 @@ package xyz.driver.core
 
 import java.net.InetAddress
 
+import com.neovisionaries.i18n.{CountryCode, CurrencyCode}
 import enumeratum._
 import eu.timepit.refined.collection.NonEmpty
 import eu.timepit.refined.numeric.Positive
 import eu.timepit.refined.refineMV
-import org.scalatest.{FlatSpec, Matchers}
+import org.scalatest.{FlatSpec, Inspectors, Matchers}
 import xyz.driver.core.json._
 import xyz.driver.core.time.provider.SystemTimeProvider
 import spray.json._
@@ -19,7 +20,7 @@ import xyz.driver.core.time.TimeOfDay
 
 import scala.collection.immutable.IndexedSeq
 
-class JsonTest extends FlatSpec with Matchers {
+class JsonTest extends FlatSpec with Matchers with Inspectors {
   import DefaultJsonProtocol._
 
   "Json format for Id" should "read and write correct JSON" in {
@@ -348,4 +349,33 @@ class JsonTest extends FlatSpec with Matchers {
     written should be("{\"identifier\":\"someone@nowhere.com\",\"password\":\"nopassword\"}".parseJson)
 
   }
+
+  "CountryCode format" should "read and write correct JSON" in {
+    val samples = Seq(
+      "US" -> CountryCode.US,
+      "CN" -> CountryCode.CN,
+      "AT" -> CountryCode.AT
+    )
+
+    forAll(samples) {
+      case (serialized, enumValue) =>
+        countryCodeFormat.write(enumValue) shouldBe JsString(serialized)
+        countryCodeFormat.read(JsString(serialized)) shouldBe enumValue
+    }
+  }
+
+  "CurrencyCode format" should "read and write correct JSON" in {
+    val samples = Seq(
+      "USD" -> CurrencyCode.USD,
+      "CNY" -> CurrencyCode.CNY,
+      "EUR" -> CurrencyCode.EUR
+    )
+
+    forAll(samples) {
+      case (serialized, enumValue) =>
+        currencyCodeFormat.write(enumValue) shouldBe JsString(serialized)
+        currencyCodeFormat.read(JsString(serialized)) shouldBe enumValue
+    }
+  }
+
 }
-- 
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