Update API methods to reflect errors

bungee/src/main/java/com/github/games647/fastlogin/bungee/PlayerConnectionListener.java

@@ -65,6 +65,8 @@ public class PlayerConnectionListener implements Listener {
                             }
                         }
                     }
+                } catch (Exception ex) {
+                    plugin.getLogger().log(Level.SEVERE, "Failed to check premium state", ex);
                 } finally {
                     preLoginEvent.completeIntent(plugin);
                 }

bungee/src/main/java/com/github/games647/fastlogin/bungee/hooks/BungeeAuthHook.java

@@ -25,7 +25,7 @@ public class BungeeAuthHook implements BungeeAuthPlugin {
     private final Tables databaseConnection = new Tables();
 
     @Override
-    public void forceLogin(final ProxiedPlayer player) {
+    public boolean forceLogin(final ProxiedPlayer player) {
 //https://github.com/MatteCarra/BungeeAuth/blob/master/src/me/vik1395/BungeeAuth/Login.java#L92-95
         Main.plonline.add(player.getName());
 
@@ -42,18 +42,21 @@ public class BungeeAuthHook implements BungeeAuthPlugin {
             ListenerClass.prelogin.get(player.getName()).cancel();
         } catch (Exception ex) {
             Main.plugin.getLogger().severe("[BungeeAuth] Error force loging in player");
+            return false;
         }
+
+        return true;
     }
 
     @Override
-    public boolean isRegistered(String playerName) {
+    public boolean isRegistered(String playerName) throws Exception {
         //https://github.com/MatteCarra/BungeeAuth/blob/master/src/me/vik1395/BungeeAuth/Register.java#L46
         //renamed t to databaseConnection
         return databaseConnection.checkPlayerEntry(playerName);
     }
 
     @Override
-    public void forceRegister(final ProxiedPlayer player, String password) {
+    public boolean forceRegister(final ProxiedPlayer player, String password) {
         //https://github.com/MatteCarra/BungeeAuth/blob/master/src/me/vik1395/BungeeAuth/Register.java#L102
         PasswordHandler ph = new PasswordHandler();
         Random rand = new Random();
@@ -84,7 +87,10 @@ public class BungeeAuthHook implements BungeeAuthPlugin {
             forceLogin(player);
         } catch (Exception ex) {
             Main.plugin.getLogger().severe("[BungeeAuth] Error when creating a new player in the Database");
+            return false;
         }
+
+        return true;
     }
 
     //pail ;(

bungee/src/main/java/com/github/games647/fastlogin/bungee/hooks/BungeeAuthPlugin.java

@@ -2,6 +2,9 @@ package com.github.games647.fastlogin.bungee.hooks;
 
 import net.md_5.bungee.api.connection.ProxiedPlayer;
 
+/**
+ * Represents a supporting authentication plugin in BungeeCord/Waterfall/... servers
+ */
 public interface BungeeAuthPlugin {
 
     /**
@@ -9,8 +12,9 @@ public interface BungeeAuthPlugin {
      * the player joined successfully a server.
      *
      * @param player the player that needs to be logged in
+     * @return if the operation was successful
      */
-    void forceLogin(ProxiedPlayer player);
+    boolean forceLogin(ProxiedPlayer player);
 
     /**
      * Checks whether an account exists for this player name.
@@ -24,8 +28,9 @@ public interface BungeeAuthPlugin {
      *
      * @param playerName player name
      * @return if the player has an account
+     * @throws Exception if an error occurred
      */
-    boolean isRegistered(String playerName);
+    boolean isRegistered(String playerName) throws Exception;
 
     /**
      * Forces a register in order to protect the paid account.
@@ -44,6 +49,7 @@ public interface BungeeAuthPlugin {
      *
      * @param player the premium account
      * @param password a strong random generated password
+     * @return if the operation was successful
      */
-    void forceRegister(ProxiedPlayer player, String password);
+    boolean forceRegister(ProxiedPlayer player, String password);
 }