Adds support for randomly selecting a time interval entry #11

src/main/java/net/knarcraft/blacksmith/formatting/TimeFormatter.java

@@ -6,6 +6,7 @@ import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.Random;
 
 import static net.knarcraft.blacksmith.formatting.StringFormatter.replacePlaceholder;
 
@@ -46,19 +47,38 @@ public final class TimeFormatter {
         List<TimeInterval> intervals = Arrays.stream(TimeInterval.values()).sorted().toList();
         for (TimeInterval interval : intervals) {
             if (seconds < interval.getIntervalMax()) {
-                //Use the set message, or use the default
-                //TODO: Check for commas in the message. If present, split on the comma and choose a random expression
-                String text = Translator.getTranslatedMessage(TranslatableMessage.valueOf(interval.name()));
-                if (text != null && !text.trim().isEmpty()) {
-                    return text;
-                } else {
-                    return interval.getDefaultText();
-                }
+                return getMessageFromInterval(interval);
             }
         }
         return TimeInterval.INTERVAL_MORE_THAN_5_MINUTES.getDefaultText();
     }
 
+    /**
+     * Gets the text string corresponding to the given time interval
+     *
+     * @param interval <p>The time interval to get text for</p>
+     * @return <p>Text describing the time interval</p>
+     */
+    private static String getMessageFromInterval(TimeInterval interval) {
+        String text = Translator.getTranslatedMessage(TranslatableMessage.valueOf(interval.name()));
+
+        //Choose a random entry if a comma-separated list is provided
+        if (text != null && text.contains(",")) {
+            String[] parts = text.split(",");
+            String randomPart = parts[new Random().nextInt(parts.length)];
+            if (randomPart != null) {
+                text = randomPart;
+            }
+        }
+
+        //Use the set message, or use the default
+        if (text != null && !text.trim().isEmpty()) {
+            return text;
+        } else {
+            return interval.getDefaultText();
+        }
+    }
+
     /**
      * Gets the string used for displaying this sign's duration
      *