src/main/java/buttondevteam/core/MainPlugin.java

@@ -1,13 +1,22 @@
 package buttondevteam.core;
 
+import java.io.File;
+import java.io.IOException;
+import java.util.Arrays;
+import java.util.List;
 import java.util.logging.Logger;
 
+import org.bukkit.Bukkit;
+import org.bukkit.configuration.ConfigurationSection;
+import org.bukkit.configuration.InvalidConfigurationException;
+import org.bukkit.configuration.file.YamlConfiguration;
 import org.bukkit.plugin.PluginDescriptionFile;
 import org.bukkit.plugin.RegisteredServiceProvider;
 import org.bukkit.plugin.java.JavaPlugin;
 
 import buttondevteam.lib.TBMCCoreAPI;
 import buttondevteam.lib.chat.TBMCChatAPI;
+import buttondevteam.lib.player.ChromaGamerBase;
 import buttondevteam.lib.player.TBMCPlayerBase;
 import net.milkbowl.vault.permission.Permission;
 
@@ -18,6 +27,7 @@ public class MainPlugin extends JavaPlugin {
 
 	private PluginDescriptionFile pdfFile;
 	private Logger logger;
+	private int C = 0, keep = 0;
 
 	@Override
 	public void onEnable() {
@@ -33,6 +43,45 @@ public class MainPlugin extends JavaPlugin {
 		TBMCCoreAPI.RegisterEventsForExceptions(new PlayerListener(), this);
 		TBMCCoreAPI.RegisterUserClass(TBMCPlayerBase.class);
 		logger.info(pdfFile.getName() + " has been Enabled (V." + pdfFile.getVersion() + ").");
+		Arrays.stream(new File(ChromaGamerBase.TBMC_PLAYERS_DIR).listFiles(f -> !f.isDirectory())).map(f -> {
+			YamlConfiguration yc = new YamlConfiguration();
+			try {
+				yc.load(f);
+			} catch (IOException | InvalidConfigurationException e) {
+				TBMCCoreAPI.SendException("Error while converting player data!", e);
+			}
+			f.delete();
+			return yc;
+		}).forEach(yc -> {
+			try {
+				int flairtime = yc.getInt("flairtime"), fcount = yc.getInt("fcount"), fdeaths = yc.getInt("fdeaths");
+				String flairstate = yc.getString("flairstate");
+				List<String> usernames = yc.getStringList("usernames");
+				boolean flaircheater = yc.getBoolean("flaircheater");
+				final String uuid = yc.getString("uuid");
+				C++;
+				if ((fcount == 0 || fdeaths == 0)
+						&& (flairstate == null || "NoComment".equals(flairstate) || flairtime <= 0))
+					return; // Those who received no Fs yet will also get their stats reset if no flair
+				final File file = new File(ChromaGamerBase.TBMC_PLAYERS_DIR + "minecraft", uuid + ".yml");
+				YamlConfiguration targetyc = YamlConfiguration.loadConfiguration(file);
+				targetyc.set("PlayerName", yc.getString("playername"));
+				targetyc.set("minecraft_id", uuid);
+				ConfigurationSection bc = targetyc.createSection("ButtonChat");
+				bc.set("FlairTime", "NoComment".equals(flairstate) ? -3 : flairtime); // FlairTimeNone: -3
+				bc.set("FCount", fcount);
+				bc.set("FDeaths", fdeaths);
+				bc.set("FlairState", flairstate);
+				bc.set("UserNames", usernames);
+				bc.set("FlairCheater", flaircheater);
+				targetyc.save(file);
+				keep++;
+			} catch (Exception e) {
+				TBMCCoreAPI.SendException("Error while converting player data!", e);
+			}
+		});
+		Bukkit.getScheduler().runTask(this, () -> logger.info("Converted " + keep + " player data from " + C));
+		//TODO: Remove once ran it at least once
 	}
 
 	@Override

src/main/java/buttondevteam/lib/player/ChromaGamerBase.java

@@ -1,7 +1,6 @@
 package buttondevteam.lib.player;
 
 import java.io.File;
-import java.io.IOException;
 import java.util.HashMap;
 import java.util.Map.Entry;
 import java.util.function.Consumer;
@@ -85,24 +84,21 @@ public abstract class ChromaGamerBase implements AutoCloseable {
 	 */
 	@Override
 	public void close() throws Exception {
-		save_();
+		if (plugindata.getKeys(false).size() > 0)
+			plugindata.save(new File(TBMC_PLAYERS_DIR + getFolder(), getFileName() + ".yml"));
 	}
 
 	/**
-	 * Saves the player. It'll send all exceptions that may happen. To catch the exception, use {@link #close()} instead.
+	 * Saves the player. It'll handle all exceptions that may happen. To catch the exception, use {@link #close()} instead.
 	 */
 	public void save() {
 		try {
-			save_();
+			close();
 		} catch (Exception e) {
 			TBMCCoreAPI.SendException("Error while saving player to " + getFolder() + "/" + getFileName() + ".yml!", e);
 		}
 	}
 
-	private void save_() throws IOException {
-		plugindata.save(new File(TBMC_PLAYERS_DIR + getFolder(), getFileName() + ".yml"));
-	}
-
 	/**
 	 * Connect two accounts. Do not use for connecting two Minecraft accounts or similar. Also make sure you have the "id" tag set
 	 * 

src/main/java/buttondevteam/lib/player/TBMCPlayerBase.java

@@ -2,6 +2,7 @@ package buttondevteam.lib.player;
 
 import java.util.Iterator;
 import java.util.Map.Entry;
+import java.util.Set;
 import java.util.UUID;
 import java.util.concurrent.ConcurrentHashMap;
 
@@ -209,4 +210,11 @@ public abstract class TBMCPlayerBase extends ChromaGamerBase {
 		else
 			return null;
 	}
+
+	@Override
+	public void close() throws Exception {
+		Set<String> keys = plugindata.getKeys(false);
+		if (keys.size() > 1) // PlayerName is always saved, but we don't need a file for just that
+			super.close();
+	}
 }