serialize date to json as object with three fields

2 files changed, 7 insertions, 21 deletions

diff --git a/src/main/scala/xyz/driver/core/date.scala b/src/main/scala/xyz/driver/core/date.scala
index 0cf8986..b954749 100644
--- a/src/main/scala/xyz/driver/core/date.scala
+++ b/src/main/scala/xyz/driver/core/date.scala
@@ -5,7 +5,7 @@ import java.util.Calendar
 object date {
 
   type Month = Int @@ Month.type
-  private[date] def tagMonth(value: Int): Month = value.asInstanceOf[Month]
+  private[core] def tagMonth(value: Int): Month = value.asInstanceOf[Month]
 
   object Month {
     val JANUARY   = tagMonth(Calendar.JANUARY)
@@ -22,7 +22,6 @@ object date {
   }
 
   final case class Date(year: Int, month: Month, day: Int) {
-    def iso8601: String = f"$year%04d-${month + 1}%02d-$day%02d"
     def toJavaSqlDate   = new java.sql.Date(toJavaDate.getTime)
     def toJavaDate: java.util.Date = {
       val cal = Calendar.getInstance()
@@ -34,11 +33,6 @@ object date {
   }
 
   object Date {
-    def parseIso(iso: String): Option[Date] = {
-      util.Try(iso.split("-").map(_.toInt)).toOption collect {
-        case Array(year, month, day) => Date(year, tagMonth(month), day)
-      }
-    }
     def fromJavaDate(date: java.util.Date) = {
       val cal = Calendar.getInstance()
       cal.setTime(date)
diff --git a/src/main/scala/xyz/driver/core/json.scala b/src/main/scala/xyz/driver/core/json.scala
index ecd7cce..fee7341 100644
--- a/src/main/scala/xyz/driver/core/json.scala
+++ b/src/main/scala/xyz/driver/core/json.scala
@@ -7,7 +7,7 @@ import akka.http.scaladsl.unmarshalling.Unmarshaller
 import spray.json.{DeserializationException, JsNumber, _}
 import xyz.driver.core.revision.Revision
 import xyz.driver.core.time.Time
-import xyz.driver.core.date.Date
+import xyz.driver.core.date.Month
 
 import scala.reflect.runtime.universe._
 
@@ -67,19 +67,11 @@ object json {
     }
   }
 
-  implicit val dateFormat = new RootJsonFormat[Date] {
-    def write(date: Date) = JsObject("calendarDate" -> JsString(date.iso8601))
-
-    def read(value: JsValue): Date = value match {
-      case JsObject(fields) =>
-        fields
-          .get("calendarDate")
-          .flatMap {
-            case JsString(iso) => Date.parseIso(iso)
-            case _             => None
-          }
-          .getOrElse(throw DeserializationException("Date expects YYYY-MM-DD"))
-      case _ => throw DeserializationException("Date expects YYYY-MM-DD")
+  implicit val dateFormat = new RootJsonFormat[Month] {
+    def write(month: Month) = JsNumber(month)
+    def read(value: JsValue): Month = value match {
+      case JsNumber(month) if 0 <= month && month <= 11 => date.tagMonth(month.toInt)
+      case _ => throw DeserializationException("Month is a 0-based number")
     }
   }