Improved Discord slot list message

- Wraps no longer only to squads, but to slots
- Removed unnecessary new lines
- Removed unnecessary spaces

src/main/java/de/webalf/slotbot/model/dtos/referenceless/EventReferencelessDto.java

@@ -1,12 +1,14 @@
 package de.webalf.slotbot.model.dtos.referenceless;
 
 import de.webalf.slotbot.model.dtos.AbstractEventDto;
+import de.webalf.slotbot.util.ListUtils;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.experimental.SuperBuilder;
 import net.dv8tion.jda.api.entities.Message;
 
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 
 /**
@@ -33,11 +35,27 @@ public List<String> getSlotList() {
 		List<String> messages = new ArrayList<>();
 		for (SquadReferencelessDto squad : getSquadList()) {
 			final StringBuilder squadText = squad.toSlotList();
-			if (slotListText.length() + 2 + squadText.length() > Message.MAX_CONTENT_LENGTH) {
+			//Existing message size + 2 new line + new line may not exceed maximum discord message size
+			if ((slotListText.length() + 2 + squadText.length() > Message.MAX_CONTENT_LENGTH) && slotListText.length() + 2 <= Message.MAX_CONTENT_LENGTH) {
+				slotListText.append("\n"); //New squad
+
+				final List<String> splitSquadText = new ArrayList<>(Arrays.asList(squadText.toString().split("\\n"))); //Split squad text on every slot
+				String nextSlotText = ListUtils.shift(splitSquadText);
+				//noinspection ConstantConditions We know the squadText is bigger than the content length, nextSlotText will exist before reaching null values
+				while (slotListText.length() + 1 + nextSlotText.length() < Message.MAX_CONTENT_LENGTH) { //Add slots until there is no more space in the message
+					slotListText.append("\n").append(nextSlotText);
+					nextSlotText = ListUtils.shift(splitSquadText);
+				}
+
 				messages.add(slotListText.toString());
-				slotListText = new StringBuilder();
+				slotListText = new StringBuilder(nextSlotText).append("\n").append(String.join("\n", splitSquadText)); //Next slot list message must contain the rest of the squad
+			} else {
+				//First squad in new message doesn't need a leading new line
+				if (slotListText.length() != 0) {
+					slotListText.append("\n\n");
+				}
+				slotListText.append(squadText);
 			}
-			slotListText.append("\n\n").append(squadText);
 		}
 		messages.add(slotListText.toString());
 

src/main/java/de/webalf/slotbot/model/dtos/referenceless/SlotReferencelessDto.java

@@ -48,13 +48,13 @@ StringBuilder toSlotList() {
 			slotText.append("**");
 		}
 
-		slotText.append(": ");
+		slotText.append(":");
 
 		final boolean isBlocked = !isEmpty && LongUtils.parseLong(getUser().getId()) == User.DEFAULT_USER_ID;
 		if (!isEmpty && !isBlocked) {
-			slotText.append("**").append(MentionUtils.getUserAsMention(getUser().getId())).append("**");
+			slotText.append(" **").append(MentionUtils.getUserAsMention(getUser().getId())).append("**");
 		} else if (isBlocked) {
-			slotText.append("*").append(getReplacementText()).append("*");
+			slotText.append(" *").append(getReplacementText()).append("*");
 		}
 		return slotText;
 	}