1 files changed, 78 insertions, 0 deletions
diff --git a/src/scalevalapokalypsi/UI/Printer.scala b/src/scalevalapokalypsi/UI/Printer.scala
new file mode 100644
index 0000000..a33864f
--- /dev/null
+++ b/src/scalevalapokalypsi/UI/Printer.scala
@@ -0,0 +1,78 @@
+package scalevalapokalypsi.UI
+import scalevalapokalypsi.Client.GameEvent
+import java.lang.System.currentTimeMillis
+import scalevalapokalypsi.utils.isPrintable
+
+/** A singleton for printing. Keeps track about the "action query" at the start
+  * of lines and has a helper function "pryntGameEvent".
+  */
+object Printer:
+	var inputIndicatorAtStartOfLine = false
+	var queriedLineToSing = false
+	var singStartTime: Option[Long] = None
+
+	/** Prints the given game event.
+	  *
+	  * @param gameEvent the event to print
+	  */
+	def printGameEvent(gameEvent: GameEvent): Unit =
+
+		val actions = gameEvent.actions.map(_.mkString("\n"))
+		val roomState = gameEvent.roomState.map(_.toString)
+		val lineToSing = gameEvent.lineToSing
+
+		if
+			inputIndicatorAtStartOfLine &&
+			(actions.isDefined ||
+			roomState.isDefined ||
+			lineToSing.isDefined)
+		then
+			this.printLn("")
+
+		actions.foreach(this.printLn(_))
+
+		roomState.foreach(this.printLn(_))
+
+		lineToSing match
+			case Some(l) =>
+				if this.singStartTime.isEmpty then
+					this.singStartTime = Some(currentTimeMillis() / 1000)
+					print(s"Laula: “$l”\n        ")
+				val timeSpent = this.singStartTime.map((t: Long) =>
+					(currentTimeMillis / 1000 - t).toString
+				).getOrElse("?")
+				print(this.timeIndicatorUpdater(timeSpent))
+			case None =>
+				this.singStartTime = None
+
+		val timeLeft = s"${gameEvent.timeToNextTurn.getOrElse("∞")}"
+
+		if
+			gameEvent.playerCanAct &&
+			lineToSing.isEmpty &&
+			!inputIndicatorAtStartOfLine
+		then
+			this.inputIndicatorAtStartOfLine = true
+			print(s"[$timeLeft s]> ")
+
+		if gameEvent.playerCanAct && lineToSing.isEmpty then
+			print(this.timeIndicatorUpdater(timeLeft))
+	
+	end printGameEvent
+
+	/** Prints the given string with a trailing newline added. Should be used
+	  * instead of ordinary println because printing outside of the Printer
+	  * might cause weird-looking output.
+	  *
+	  * @param s the line to print
+	  */
+	def printLn(s: String): Unit =
+		if isPrintable(s) then
+			println(s)
+		else
+			println("Virhe: epätavallinen merkki havaittu tulosteessa.")
+		this.inputIndicatorAtStartOfLine = false
+	
+	private def timeIndicatorUpdater(t: String): String =
+		s"\u001b7\u001b[0E[$t s]> \u001b8"
+