Adds a command for un-waxing a sign

src/main/java/net/knarcraft/placeholdersigns/PlaceholderSigns.java

@@ -5,6 +5,7 @@ import net.knarcraft.knarlib.formatting.Translator;
 import net.knarcraft.knarlib.property.ColorConversion;
 import net.knarcraft.placeholdersigns.command.CopySignCommand;
 import net.knarcraft.placeholdersigns.command.EditSignCommand;
+import net.knarcraft.placeholdersigns.command.UnWaxSignCommand;
 import net.knarcraft.placeholdersigns.command.ViewSignCommand;
 import net.knarcraft.placeholdersigns.config.PlaceholderSignMessage;
 import net.knarcraft.placeholdersigns.handler.PlaceholderSignHandler;
@@ -95,6 +96,7 @@ public final class PlaceholderSigns extends JavaPlugin {
         registerCommand("setSignLine", new EditSignCommand());
         registerCommand("viewSign", new ViewSignCommand());
         registerCommand("copySign", new CopySignCommand());
+        registerCommand("unWaxSign", new UnWaxSignCommand());
     }
 
     @Override

src/main/java/net/knarcraft/placeholdersigns/command/UnWaxSignCommand.java

@@ -0,0 +1,52 @@
+package net.knarcraft.placeholdersigns.command;
+
+import net.knarcraft.knarlib.formatting.StringFormatter;
+import net.knarcraft.placeholdersigns.PlaceholderSigns;
+import net.knarcraft.placeholdersigns.config.PlaceholderSignMessage;
+import org.bukkit.block.Block;
+import org.bukkit.block.Sign;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandSender;
+import org.bukkit.command.TabExecutor;
+import org.bukkit.entity.Player;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * A command for removing the wax on a sign
+ */
+public class UnWaxSignCommand implements TabExecutor {
+
+    @Override
+    public boolean onCommand(@NotNull CommandSender commandSender, @NotNull Command command, @NotNull String s,
+                             @NotNull String[] strings) {
+        StringFormatter stringFormatter = PlaceholderSigns.getInstance().getStringFormatter();
+        if (!(commandSender instanceof Player player)) {
+            stringFormatter.displayErrorMessage(commandSender, PlaceholderSignMessage.ERROR_PLAYER_ONLY);
+            return false;
+        }
+
+        Block targetBlock = player.getTargetBlockExact(7);
+        if (targetBlock == null || !(targetBlock.getState() instanceof Sign sign)) {
+            stringFormatter.displayErrorMessage(commandSender, PlaceholderSignMessage.ERROR_NOT_LOOKING_AT_SIGN);
+            return false;
+        }
+
+        sign.setWaxed(false);
+        sign.update();
+
+        stringFormatter.displaySuccessMessage(commandSender, PlaceholderSignMessage.SUCCESS_SIGN_UN_WAXED);
+        return true;
+    }
+
+    @Nullable
+    @Override
+    public List<String> onTabComplete(@NotNull CommandSender commandSender, @NotNull Command command, @NotNull String s,
+                                      @NotNull String[] strings) {
+        return new ArrayList<>();
+    }
+
+}

src/main/java/net/knarcraft/placeholdersigns/command/ViewSignCommand.java

@@ -85,8 +85,8 @@ public class ViewSignCommand implements TabExecutor {
     /**
      * Prints the current contents of a sign to a player
      *
-     * @param sign             <p>The sign to print</p>
-     * @param player           <p>The player to display the contents to</p>
+     * @param sign   <p>The sign to print</p>
+     * @param player <p>The player to display the contents to</p>
      */
     private void printSign(@NotNull Sign sign, @NotNull Player player, boolean showRawText, boolean showPlaceholders) {
         Location location = sign.getLocation();
@@ -161,8 +161,10 @@ public class ViewSignCommand implements TabExecutor {
         }
 
         Map<Integer, String> placeholders = placeholderSign.placeholders().get(side);
-        for (Map.Entry<Integer, String> entry : placeholders.entrySet()) {
-            lines[entry.getKey()] = entry.getValue();
+        if (placeholders != null) {
+            for (Map.Entry<Integer, String> entry : placeholders.entrySet()) {
+                lines[entry.getKey()] = entry.getValue();
+            }
         }
 
         return getSignText(lines, raw);

src/main/java/net/knarcraft/placeholdersigns/config/PlaceholderSignMessage.java

@@ -62,6 +62,11 @@ public enum PlaceholderSignMessage implements TranslatableMessage {
      * The message displayed when a protection plugin cancels the sign change event
      */
     ERROR_CANCELLED_BY_PROTECTION,
+
+    /**
+     * The message displayed when a sign has been successfully un-waxed
+     */
+    SUCCESS_SIGN_UN_WAXED,
     ;
 
     @Override

src/main/java/net/knarcraft/placeholdersigns/listener/SignClickListener.java

@@ -130,11 +130,11 @@ public class SignClickListener implements Listener {
     /**
      * Gets the final lines from a sign side, after inserting placeholders and running a sign change event
      *
-     * @param sign <p>The sign that's changed</p>
-     * @param signSide <p>The side of the sign to get lines from</p>
-     * @param side <p>The side that's processed</p>
+     * @param sign            <p>The sign that's changed</p>
+     * @param signSide        <p>The side of the sign to get lines from</p>
+     * @param side            <p>The side that's processed</p>
      * @param placeholderSign <p>The placeholder sign corresponding to the sign, if any</p>
-     * @param player <p>The player attempting to paste the sign</p>
+     * @param player          <p>The player attempting to paste the sign</p>
      * @return <p>The final lines, or null if the event was cancelled</p>
      */
     @Nullable