From a4dd609bbef58f631f5ceaa1f034deb0ecf12db1 Mon Sep 17 00:00:00 2001
From: Zach Smith <zach@driver.xyz>
Date: Tue, 6 Mar 2018 15:00:16 -0800
Subject: Add DayOfWeek type

---
 src/main/scala/xyz/driver/core/date.scala       | 16 ++++++++++++++++
 src/main/scala/xyz/driver/core/generators.scala |  4 +++-
 src/main/scala/xyz/driver/core/json.scala       |  5 ++++-
 3 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/src/main/scala/xyz/driver/core/date.scala b/src/main/scala/xyz/driver/core/date.scala
index d6f64e4..fe35c91 100644
--- a/src/main/scala/xyz/driver/core/date.scala
+++ b/src/main/scala/xyz/driver/core/date.scala
@@ -5,6 +5,7 @@ import java.util.Calendar
 import scala.util.Try
 
 import scalaz.std.anyVal._
+import scalaz.Scalaz.stringInstance
 import scalaz.syntax.equal._
 
 /**
@@ -14,6 +15,21 @@ import scalaz.syntax.equal._
   */
 object date {
 
+  sealed trait DayOfWeek
+  object DayOfWeek {
+    case object Monday    extends DayOfWeek
+    case object Tuesday   extends DayOfWeek
+    case object Wednesday extends DayOfWeek
+    case object Thursday  extends DayOfWeek
+    case object Friday    extends DayOfWeek
+    case object Saturday  extends DayOfWeek
+    case object Sunday    extends DayOfWeek
+
+    val All: Set[DayOfWeek] = Set(Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday)
+
+    def fromString(day: String): Option[DayOfWeek] = All.find(_.toString === day)
+  }
+
   type Day = Int @@ Day.type
 
   object Day {
diff --git a/src/main/scala/xyz/driver/core/generators.scala b/src/main/scala/xyz/driver/core/generators.scala
index e842dd2..e3ff326 100644
--- a/src/main/scala/xyz/driver/core/generators.scala
+++ b/src/main/scala/xyz/driver/core/generators.scala
@@ -4,7 +4,7 @@ import java.math.MathContext
 import java.util.UUID
 
 import xyz.driver.core.time.{Time, TimeRange}
-import xyz.driver.core.date.Date
+import xyz.driver.core.date.{Date, DayOfWeek}
 
 import scala.reflect.ClassTag
 import scala.util.Random
@@ -80,6 +80,8 @@ object generators {
 
   def nextDate(): Date = nextTime().toDate(java.util.TimeZone.getTimeZone("UTC"))
 
+  def nextDayOfWeek(): DayOfWeek = oneOf(DayOfWeek.All)
+
   def nextBigDecimal(multiplier: Double = 1000000.00, precision: Int = 2): BigDecimal =
     BigDecimal(multiplier * nextDouble, new MathContext(precision))
 
diff --git a/src/main/scala/xyz/driver/core/json.scala b/src/main/scala/xyz/driver/core/json.scala
index e338638..02a35fd 100644
--- a/src/main/scala/xyz/driver/core/json.scala
+++ b/src/main/scala/xyz/driver/core/json.scala
@@ -12,7 +12,7 @@ import akka.http.scaladsl.marshalling.{Marshaller, Marshalling}
 import akka.http.scaladsl.unmarshalling.Unmarshaller
 import spray.json._
 import xyz.driver.core.auth.AuthCredentials
-import xyz.driver.core.date.{Date, Month}
+import xyz.driver.core.date.{Date, DayOfWeek, Month}
 import xyz.driver.core.domain.{Email, PhoneNumber}
 import xyz.driver.core.time.Time
 import eu.timepit.refined.refineV
@@ -80,6 +80,9 @@ object json {
     }
   }
 
+  implicit val dayOfWeekFormat: JsonFormat[DayOfWeek] =
+    new EnumJsonFormat[DayOfWeek](DayOfWeek.All.map(w => w.toString -> w)(collection.breakOut): _*)
+
   implicit val dateFormat = new RootJsonFormat[Date] {
     def write(date: Date) = JsString(date.toString)
     def read(value: JsValue): Date = value match {
-- 
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