Fetching from harmonie servers

src/main/scala/fetchDMI/FileName.scala

@@ -0,0 +1,36 @@
+package fetchDMI
+
+import java.time.{ZoneOffset, ZonedDateTime}
+
+object FileName {
+  def main(args: Array[String]): Unit = {
+    println("-------- FileName")
+
+    val nowUTC = ZonedDateTime.now(ZoneOffset.UTC)
+    val referenceTime = getClosestReferenceTime(nowUTC)
+    val timeList = generateTimeList(referenceTime)
+
+    timeList.foreach(println)
+
+  }
+
+  def getClosestReferenceTime(time: ZonedDateTime): ZonedDateTime = {
+    val referenceHours = Vector(0, 3, 6, 9, 12, 15, 18, 21)
+    val currentHour = time.getHour
+    val closestHour = referenceHours
+      .filter(h => h <= currentHour)
+      .maxOption
+      .getOrElse(21) // actually should not be such case
+
+    time
+      .withHour(closestHour)
+      .withMinute(0)
+      .withSecond(0)
+      .withNano(0)
+  }
+
+  // TODO make default count to 62 or 60
+  def generateTimeList(initialTime: ZonedDateTime, interval: Int = 1, count: Int = 5): List[ZonedDateTime] = {
+    (0 until count).map(id => initialTime.plusHours(id * interval)).toList
+  }
+}