Adds some more code for getting closer to a working plugin

Loads signs from disk when executing the reload command
Adds code for sign registration
Saves signs when adding/removing a sign
Makes sure to initialize the translator
Adds a check for whether a sign is registered

src/main/java/net/knarcraft/permissionsigns/PermissionSigns.java

@@ -4,6 +4,7 @@ import net.knarcraft.permissionsigns.command.PermissionSignsCommand;
 import net.knarcraft.permissionsigns.command.PermissionSignsTabCompleter;
 import net.knarcraft.permissionsigns.container.PermissionSign;
 import net.knarcraft.permissionsigns.container.SignCreationRequest;
+import net.knarcraft.permissionsigns.formatting.Translator;
 import net.knarcraft.permissionsigns.thread.SignCreationRequestTimeoutThread;
 import org.bukkit.Bukkit;
 import org.bukkit.command.PluginCommand;
@@ -27,6 +28,7 @@ public final class PermissionSigns extends JavaPlugin {
     /**
      * Instantiates the permission signs class
      */
+    @SuppressWarnings("unused")
     public PermissionSigns() {
         super();
         instance = this;
@@ -128,8 +130,9 @@ public final class PermissionSigns extends JavaPlugin {
         //TODO: Start sign creation when the create command is used and save the data until an empty sign is right-clicked
 
         //TODO: Check for existence of old permission signs when clicked and register them as new permission signs. If 
-        // it has the permissionSigns header and a name matching contents in signdata.yml, add it.
+        // it has the permissionSigns header and a name matching contents in signs.yml, add it.
 
+        Translator.loadLanguages("en");
         registerCommands();
         BukkitScheduler scheduler = Bukkit.getScheduler();
         scheduler.runTaskTimer(this, new SignCreationRequestTimeoutThread(signCreationRequests), 0L, 100L);

src/main/java/net/knarcraft/permissionsigns/SignManager.java

@@ -25,12 +25,13 @@ public class SignManager {
     private static final File signsFile = new File(PermissionSigns.getInstance().getDataFolder(), "signs.yml");
 
     /**
-     * Gets a copy of all managed signs
+     * Gets the permission sign at the given location
      *
-     * @return <p>All managed signs</p>
+     * @param signLocation <p>The location of the permission sign to get</p>
+     * @return <p>The permission sign at the given location, or null if no such sign exists</p>
      */
-    public static Map<Location, PermissionSign> getSigns() {
+    public static PermissionSign getSign(Location signLocation) {
-        return new HashMap<>(managedSigns);
+        return managedSigns.get(signLocation);
     }
 
     /**
@@ -40,15 +41,17 @@ public class SignManager {
      */
     public static void addSign(PermissionSign sign) {
         managedSigns.put(sign.getSignLocation(), sign);
+        save();
     }
 
     /**
      * Removes a sign
      *
-     * @param sign <p>The sign to remove</p>
+     * @param location <p>The location of the sign to remove</p>
      */
-    public static void removeSign(PermissionSign sign) {
+    public static void removeSign(Location location) {
-        managedSigns.remove(sign.getSignLocation());
+        managedSigns.remove(location);
+        save();
     }
 
     /**
@@ -91,6 +94,18 @@ public class SignManager {
                         e.getMessage());
             }
         }
+        //TODO: Might want to re-draw signs here in case any signs have changed
+    }
+
+    /**
+     * Tries to save signs and handles any errors
+     */
+    private static void save() {
+        try {
+            saveSigns();
+        } catch (IOException e) {
+            PermissionSigns.getInstance().getLogger().log(Level.SEVERE, "Unable to save signs: " + e.getMessage());
+        }
     }
 
     /**

src/main/java/net/knarcraft/permissionsigns/command/CreateCommand.java

@@ -40,6 +40,8 @@ public class CreateCommand implements CommandExecutor {
             return false;
         }
         PermissionSigns.addSignCreationRequest((Player) sender, newSign);
+        //TODO: Tell the user that the creation request has been created and that they need to right-click an empty 
+        // sign within 60 seconds to register the permissions sign
         return true;
     }
 

src/main/java/net/knarcraft/permissionsigns/command/ReloadCommand.java

@@ -1,5 +1,6 @@
 package net.knarcraft.permissionsigns.command;
 
+import net.knarcraft.permissionsigns.SignManager;
 import net.knarcraft.permissionsigns.formatting.StringFormatter;
 import net.knarcraft.permissionsigns.formatting.TranslatableMessage;
 import net.knarcraft.permissionsigns.formatting.Translator;
@@ -8,12 +9,16 @@ import org.bukkit.command.CommandExecutor;
 import org.bukkit.command.CommandSender;
 import org.jetbrains.annotations.NotNull;
 
+/**
+ * The command used to reload this plugin
+ */
 public class ReloadCommand implements CommandExecutor {
 
     @Override
     public boolean onCommand(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label, @NotNull String[] args) {
         if (sender.hasPermission("permissionsigns.admin.reload")) {
             //TODO: Perform a reload from disk
+            SignManager.loadSigns();
         } else {
             sender.sendMessage(StringFormatter.formatErrorMessage(Translator.getTranslatedMessage(TranslatableMessage.COMMAND_PERMISSION_DENIED)));
         }

src/main/java/net/knarcraft/permissionsigns/formatting/Translator.java

@@ -13,7 +13,7 @@ import java.util.logging.Level;
 /**
  * A tool to get strings translated to the correct language
  */
-public class Translator {
+public final class Translator {
 
     private static Map<TranslatableMessage, String> translatedMessages;
     private static Map<TranslatableMessage, String> backupTranslatedMessages;
@@ -21,9 +21,9 @@ public class Translator {
     /**
      * Loads the languages used by this translator
      */
-    public Translator() {
+    public static void loadLanguages(String selectedLanguage) {
         backupTranslatedMessages = loadTranslatedMessages("en");
-        translatedMessages = loadTranslatedMessages("en");
+        translatedMessages = loadTranslatedMessages(selectedLanguage);
     }
 
     /**

src/main/java/net/knarcraft/permissionsigns/listener/SignListener.java

@@ -1,6 +1,8 @@
 package net.knarcraft.permissionsigns.listener;
 
 import net.knarcraft.permissionsigns.PermissionSigns;
+import net.knarcraft.permissionsigns.SignManager;
+import net.knarcraft.permissionsigns.container.PermissionSign;
 import net.knarcraft.permissionsigns.container.SignCreationRequest;
 import net.knarcraft.permissionsigns.formatting.TranslatableMessage;
 import net.knarcraft.permissionsigns.formatting.Translator;
@@ -48,9 +50,15 @@ public class SignListener implements Listener {
         }
     }
 
+    /**
+     * Handles the left click of a sign that might be a permission sign
+     *
+     * @param sign   <p>The clicked sign</p>
+     * @param player <p>The player that clicked the sign</p>
+     * @param event  <p>The triggered interaction event</p>
+     */
     private void handleSignLeftClick(Sign sign, Player player, PlayerInteractEvent event) {
-        //TODO: Check if the sign is a registered permissions sign
+        boolean registered = SignManager.getSign(sign.getLocation()) != null;
-        boolean registered = true;
         if (!registered) {
             return;
         }
@@ -58,7 +66,7 @@ public class SignListener implements Listener {
             event.setCancelled(true);
             player.sendMessage(Translator.getTranslatedMessage(TranslatableMessage.PERMISSION_SIGN_DESTROY_DENY));
         } else {
-            //TODO: Un-register the permissions sign
+            SignManager.removeSign(sign.getLocation());
             player.sendMessage(Translator.getTranslatedMessage(TranslatableMessage.PERMISSION_SIGN_REMOVED));
         }
     }
@@ -72,7 +80,10 @@ public class SignListener implements Listener {
     private void handleSignRightClick(Sign sign, Player player) {
         String[] lines = sign.getLines();
 
-        //TODO: Check if the sign is a registered permissions sign
+        if (SignManager.getSign(sign.getLocation()) != null) {
+            //TODO: Perform the permission payment/granting
+            return;
+        }
 
         //Don't allow non-empty signs to be overwritten
         if (!Arrays.stream(lines).allMatch(String::isEmpty)) {
@@ -84,7 +95,18 @@ public class SignListener implements Listener {
             return;
         }
 
-        //TODO: Register the sign and remove the request
+        //Register the sign and remove the request
+        PermissionSign permissionSign = request.getPermissionSign();
+        permissionSign.setSignLocation(sign.getLocation());
+        SignManager.addSign(permissionSign);
+        PermissionSigns.cancelSignCreationRequest(player.getUniqueId());
+
+        //Display the permission sign information on the sign
+        String[] signLines = permissionSign.getSignLines();
+        for (int i = 0; i < signLines.length; i++) {
+            sign.setLine(i, signLines[i]);
+        }
+        sign.update();
     }
 
 }