serialize date to ISO string rather than object

1 files changed, 11 insertions, 10 deletions

diff --git a/src/main/scala/xyz/driver/core/json.scala b/src/main/scala/xyz/driver/core/json.scala
index 039f650..9a7672e 100644
--- a/src/main/scala/xyz/driver/core/json.scala
+++ b/src/main/scala/xyz/driver/core/json.scala
@@ -7,14 +7,12 @@ 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, Month}
+import xyz.driver.core.date.Date
 
 import scala.reflect.runtime.universe._
 
 object json {
 
-  import DefaultJsonProtocol._
-
   def IdInPath[T]: PathMatcher1[Id[T]] = new PathMatcher1[Id[T]] {
     def apply(path: Path) = path match {
       case Path.Segment(segment, tail) => Matched(tail, Tuple1(Id[T](segment)))
@@ -69,16 +67,19 @@ object json {
     }
   }
 
-  implicit val monthFormat = 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("Expected a number from 0 to 11")
+  implicit val dateFormat = new JsonFormat[Date] {
+    def write(date: Date) = JsString(date.toString)
+    def read(value: JsValue): Date = value match {
+      case JsString(dateString) =>
+        Date
+          .fromString(dateString)
+          .getOrElse(
+            throw new DeserializationException(
+              s"Misformated ISO 8601 Date. Expected YYYY-MM-DD, but got $dateString."))
+      case _ => throw new DeserializationException(s"Date expects a string, but got $value.")
     }
   }
 
-  implicit val dateFormat = jsonFormat3(Date.apply)
-
   def RevisionInPath[T]: PathMatcher1[Revision[T]] =
     PathMatcher("""[\da-fA-F]{8}-[\da-fA-F]{4}-[\da-fA-F]{4}-[\da-fA-F]{4}-[\da-fA-F]{12}""".r) flatMap { string =>
       Some(Revision[T](string))