added changelog handler class

src/main/java/de/steev/bm/BetterMinecraft.java

@@ -5,89 +5,81 @@ import de.steev.bm.Listener.BedListener;
 import de.steev.bm.Listener.InteractListener;
 import de.steev.bm.Listener.KillListener;
 import de.steev.bm.Manager.GameManager;
-
+import de.steev.bm.utils.Config;
+import de.steev.bm.utils.exceptions.ConfigEntryExceptions;
 import org.bukkit.ChatColor;
 import org.bukkit.World;
-import org.bukkit.configuration.file.FileConfiguration;
-import org.bukkit.configuration.file.YamlConfiguration;
 import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.Listener;
 import org.bukkit.event.player.PlayerJoinEvent;
 import org.bukkit.plugin.java.JavaPlugin;
 
-import java.io.File;
 import java.io.IOException;
+import java.util.Objects;
 import java.util.UUID;
+import static de.steev.bm.utils.Constants.*;
 
 public class BetterMinecraft extends JavaPlugin implements Listener {
 
 	// Global Variables that might come helpfull later
 	public int playerInBed = 0;
 	public World world;
-	String version = "1.2";
 
 	// Custom Playerdata File
-	private File playerdata;
-	private FileConfiguration playerDataConfig;
-	private final String playerdatafilename = "playerdata.yml";
-	private static String prefix = ChatColor.GRAY + "[" + ChatColor.AQUA + "BetterMinecraft" + ChatColor.GRAY + "]";
-
+	private Config playerData = new Config(playerDataFilename, this);
 	private GameManager gameManager;
 
 	// Handles initialisation
 	public void onEnable() {
 		// Messaging
-		this.getLogger().info(prefix + ChatColor.WHITE + "Plugin Startet");
+		this.getLogger().info(prefix + ChatColor.WHITE + "Plugin Startup");
 		this.getLogger().info(prefix + ChatColor.WHITE + "Initializing Gamemanager");
 		gameManager = new GameManager(this);
 
 		// Registers Events
-		this.getLogger().info(prefix + ChatColor.WHITE + "Lade Events");
+		this.getLogger().info(prefix + ChatColor.WHITE + "Load Events");
 		this.getServer().getPluginManager().registerEvents(new BedListener(this.gameManager), this);
 		this.getServer().getPluginManager().registerEvents(new KillListener(this.gameManager), this);
 		this.getServer().getPluginManager().registerEvents(new InteractListener(this.gameManager), this);
 		this.getServer().getPluginManager().registerEvents(this, this);
 
-		this.getCommand("back").setExecutor(new back(this.gameManager));
+		Objects.requireNonNull(this.getCommand("back")).setExecutor(new back(this.gameManager));
 
 		// PlayerData
-		playerdata = new File(this.getDataFolder(), playerdatafilename);
-		playerDataConfig = YamlConfiguration.loadConfiguration(playerdata);
-		saveplayerdata();
+        try {
+            this.playerData.saveConfig(playerDataFilename);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
 
-		// More Messaging
-		this.getLogger().info(ChatColor.AQUA + "Ich bin Fertig :D");
+        // More Messaging
+		this.getLogger().info(ChatColor.AQUA + "Startup complete :D");
 	}
 
 	@EventHandler
 	void onPlayerJoin(PlayerJoinEvent e) {
 		Player p = (Player) e.getPlayer();
 		UUID uuid = p.getUniqueId();
-		// prevent this allways resetting the job count
-		if (this.playerDataConfig.get(uuid + "." + version + ".read") == null) {
-			p.sendMessage("================= Better Minecraft " + version + " =================");
-			p.sendMessage("Command: /back eingefügt");
-			p.sendMessage("=====================================================");
 
-			this.playerDataConfig.set(uuid + ".name", p.getName());
-			this.playerDataConfig.set(uuid + "." + version + ".read", "true");
-			saveplayerdata();
-		}
-	}
-
-	void saveplayerdata() {
 		try {
-			playerDataConfig.save(playerdata);
-		} catch (IOException e) {
-			this.getLogger().warning("Unable to save " + playerdatafilename); // shouldn't really happen, but save
-			// throws the exception
+			// prevent this allways resetting the job count
+			if (this.playerData.readBooleanFromConfig(uuid + "." + Version + ".read")) {
+				p.sendMessage("================= Better Minecraft " + Version + " =================");
+				p.sendMessage("Command: /back eingefügt");
+				p.sendMessage("=====================================================");
+
+				this.playerData.writeStringToConfig(uuid + ".name", p.getName());
+				this.playerData.writeStringToConfig(uuid + "." + Version + ".read", "true");
+				this.playerData.saveConfig(playerDataFilename);
+			}
+		} catch (ConfigEntryExceptions cee) {
+			this.getLogger().warning("reading config failed with error: " + cee.getMessage());
+		} catch (IOException ioe) {
+			throw new RuntimeException(ioe);
 		}
 	}
 
-	public FileConfiguration getPlayerDataConfig(){
-		return this.playerDataConfig;
-	}
 	public static String LoggerPrefix(){
 		return prefix;
 	}

src/main/java/de/steev/bm/utils/Changelog.java

@@ -0,0 +1,37 @@
+package de.steev.bm.utils;
+
+import de.steev.bm.Manager.GameManager;
+import org.bukkit.entity.Player;
+
+public class Changelog {
+    private GameManager plugin;
+
+    public Changelog(GameManager plugin) {
+        this.plugin = plugin;
+    }
+
+    /**
+     * handles getting changelog and sending it to the player
+     * @param player the receiving player
+     */
+    public void SendChangelog(Player player) {
+        player.sendMessage(createChangelog());
+    }
+
+    /**
+     * handles checking the playerdata if a player already saw the changelog
+     * @param player the player to lookup
+     * @return boolean which tells whether or not a player has seen the changelog
+     */
+    private boolean hasPlayerSeenChangelog(Player player) {
+        return false;
+    }
+
+    /***
+     * reads the set changlog file
+     * @return the resulting changelog as string
+     */
+    private String createChangelog() {
+        return "";
+    }
+}

src/main/java/de/steev/bm/utils/Config.java

@@ -0,0 +1,72 @@
+package de.steev.bm.utils;
+
+import de.steev.bm.BetterMinecraft;
+import de.steev.bm.utils.exceptions.ConfigEntryExceptions;
+import org.bukkit.configuration.file.FileConfiguration;
+import org.bukkit.configuration.file.YamlConfiguration;
+
+import java.io.File;
+import java.io.IOException;
+
+import static de.steev.bm.utils.Constants.playerDataFilename;
+
+public class Config {
+    private String name;
+    private File configFile;
+    private FileConfiguration fileConfiguration;
+    private BetterMinecraft plugin;
+
+    public Config(String name, BetterMinecraft plugin) {
+        this.name = name;
+        this.plugin = plugin;
+        configFile = new File(this.plugin.getDataFolder(), playerDataFilename);
+        fileConfiguration = YamlConfiguration.loadConfiguration(configFile);
+    }
+
+    public void saveConfig(String name) throws IOException {
+        try {
+            fileConfiguration.save(configFile);
+        } catch (IOException e) {
+            this.plugin.getLogger().warning("Unable to save " + playerDataFilename); // shouldn't really happen, but save
+            // throws the exception
+            throw e;
+        }
+    }
+
+    public void writeStringToConfig(String path, String value) {
+        this.fileConfiguration.set(path, value);
+    }
+
+    public String readStringFromConfig(String path) throws ConfigEntryExceptions {
+
+        if (this.fileConfiguration.get(path) == null) {
+            throw new ConfigEntryExceptions("entry at: " + path + " found null");
+        }
+
+        return this.fileConfiguration.getString(path);
+    }
+
+    public int readIntFromConfig(String path) throws ConfigEntryExceptions {
+        if (this.fileConfiguration.get(path) == null) {
+            throw new ConfigEntryExceptions("entry at: " + path + " found null");
+        }
+
+        return this.fileConfiguration.getInt(path);
+    }
+
+    public boolean readBooleanFromConfig(String path) throws ConfigEntryExceptions {
+        if (this.fileConfiguration.get(path) == null) {
+            throw new ConfigEntryExceptions("entry at: " + path + " found null");
+        }
+
+        return this.fileConfiguration.getBoolean(path);
+    }
+
+    public FileConfiguration getConfig() {
+        return this.fileConfiguration;
+    }
+
+    public String getName() {
+        return this.name;
+    }
+}

src/main/java/de/steev/bm/utils/Constants.java

@@ -0,0 +1,9 @@
+package de.steev.bm.utils;
+
+import org.bukkit.ChatColor;
+
+public class Constants {
+    public static final String prefix = ChatColor.GRAY + "[" + ChatColor.AQUA + "BetterMinecraft" + ChatColor.GRAY + "]";
+    public static final String playerDataFilename = "playerdata.yml";
+    public static final String Version = "1.2.2";
+}

src/main/java/de/steev/bm/utils/exceptions/ConfigEntryExceptions.java

@@ -0,0 +1,9 @@
+package de.steev.bm.utils.exceptions;
+
+public class ConfigEntryExceptions extends Exception {
+    public ConfigEntryExceptions() {}
+
+    public ConfigEntryExceptions(String message) {
+        super(message);
+    }
+}