Made /reload and loading the offline players in onEnable asynchronous, added some more feedback (#33, #23)

src/main/java/com/gmail/artemis/the/gr8/playerstats/Main.java

@@ -36,20 +36,20 @@ public class Main extends JavaPlugin {
         ConfigHandler config = new ConfigHandler(this);
         MessageFactory messageFactory = new MessageFactory(config, this);
         OfflinePlayerHandler offlinePlayerHandler = new OfflinePlayerHandler(config);
-        getLogger().info("Amount of offline players: " + offlinePlayerHandler.getOfflinePlayerCount());
+        ThreadManager threadManager = new ThreadManager(this, adventure(), config, offlinePlayerHandler, messageFactory);
 
         //register the commands
         PluginCommand statcmd = this.getCommand("statistic");
         if (statcmd != null) {
-            statcmd.setExecutor(new StatCommand(adventure(), config, offlinePlayerHandler, messageFactory, this));
+            statcmd.setExecutor(new StatCommand(threadManager, adventure(),offlinePlayerHandler, messageFactory));
             statcmd.setTabCompleter(new TabCompleter(offlinePlayerHandler));
         }
         PluginCommand reloadcmd = this.getCommand("statisticreload");
-        if (reloadcmd != null) reloadcmd.setExecutor(new ReloadCommand(config, offlinePlayerHandler, this));
+        if (reloadcmd != null) reloadcmd.setExecutor(new ReloadCommand(threadManager));
 
         //register the listener
         Bukkit.getPluginManager().registerEvents(new JoinListener(offlinePlayerHandler), this);
-        logTimeTaken("Time", "taken", time);
+        logTimeTaken("onEnable", "time taken", time);
         this.getLogger().info("Enabled PlayerStats!");
     }
 
@@ -59,12 +59,11 @@ public class Main extends JavaPlugin {
             adventure.close();
             adventure = null;
         }
-
         this.getLogger().info("Disabled PlayerStats!");
     }
 
     public long logTimeTaken(String className, String methodName, long previousTime) {
-        getLogger().info(className + " " + methodName + ": " + (System.currentTimeMillis() - previousTime) + "ms");
+        getLogger().info(className + ", " + methodName + ": " + (System.currentTimeMillis() - previousTime) + "ms");
         return System.currentTimeMillis();
     }
 }

src/main/java/com/gmail/artemis/the/gr8/playerstats/ReloadThread.java

@@ -0,0 +1,66 @@
+package com.gmail.artemis.the.gr8.playerstats;
+
+import com.gmail.artemis.the.gr8.playerstats.filehandlers.ConfigHandler;
+import com.gmail.artemis.the.gr8.playerstats.statistic.StatThread;
+import com.gmail.artemis.the.gr8.playerstats.utils.MessageFactory;
+import com.gmail.artemis.the.gr8.playerstats.utils.OfflinePlayerHandler;
+import org.bukkit.ChatColor;
+import org.bukkit.command.CommandSender;
+import org.jetbrains.annotations.Nullable;
+
+public class ReloadThread extends Thread {
+
+    private final ConfigHandler config;
+    private final OfflinePlayerHandler offlinePlayerHandler;
+    private final Main plugin;
+
+    private final StatThread statThread;
+    private final CommandSender sender;
+    private final boolean firstTimeLoading;
+
+    public ReloadThread(ConfigHandler c, OfflinePlayerHandler o, Main p, @Nullable StatThread s, @Nullable CommandSender se, boolean firstTime) {
+        config = c;
+        offlinePlayerHandler = o;
+        plugin = p;
+
+        statThread = s;
+        sender = se;
+        firstTimeLoading = firstTime;
+
+        plugin.getLogger().info("ReloadThread created");
+    }
+
+    @Override
+    public void run() {
+        long time = System.currentTimeMillis();
+
+        if (!firstTimeLoading) {
+            if (statThread != null && statThread.isAlive()) {
+                try {
+                    plugin.getLogger().info("Waiting for statThread to finish up...");
+                    statThread.join();
+                } catch (InterruptedException e) {
+                    plugin.getLogger().warning(e.toString());
+                    throw new RuntimeException(e);
+                }
+            }
+            plugin.getLogger().info("Reloading!");
+            if (config.reloadConfig()) {
+                offlinePlayerHandler.updateOfflinePlayerList();
+
+                plugin.getLogger().info("Amount of relevant players: " + offlinePlayerHandler.getOfflinePlayerCount());
+                plugin.logTimeTaken("ReloadThread", "loading offline players", time);
+                if (sender != null) {
+                    sender.sendMessage(MessageFactory.getPluginPrefix() + ChatColor.GREEN + "Config reloaded!");
+                }
+            }
+        }
+        else {
+            plugin.getLogger().info("Loading offline players...");
+            offlinePlayerHandler.updateOfflinePlayerList();
+            plugin.getLogger().info("Amount of relevant players: " + offlinePlayerHandler.getOfflinePlayerCount());
+            plugin.logTimeTaken("ReloadThread", "loading offline players", time);
+            ThreadManager.recordCalcTime(System.currentTimeMillis() - time);
+        }
+    }
+}

src/main/java/com/gmail/artemis/the/gr8/playerstats/ThreadManager.java

@@ -0,0 +1,53 @@
+package com.gmail.artemis.the.gr8.playerstats;
+
+import com.gmail.artemis.the.gr8.playerstats.filehandlers.ConfigHandler;
+import com.gmail.artemis.the.gr8.playerstats.statistic.StatRequest;
+import com.gmail.artemis.the.gr8.playerstats.statistic.StatThread;
+import com.gmail.artemis.the.gr8.playerstats.utils.MessageFactory;
+import com.gmail.artemis.the.gr8.playerstats.utils.OfflinePlayerHandler;
+import net.kyori.adventure.platform.bukkit.BukkitAudiences;
+import org.bukkit.command.CommandSender;
+
+
+public class ThreadManager {
+
+    private final Main plugin;
+    private final BukkitAudiences adventure;
+    private final ConfigHandler config;
+    private final OfflinePlayerHandler offlinePlayerHandler;
+    private final MessageFactory messageFactory;
+
+    private ReloadThread reloadThread;
+    private StatThread statThread;
+    private static long lastRecordedCalcTime;
+
+    public ThreadManager(Main p, BukkitAudiences b, ConfigHandler c, OfflinePlayerHandler o, MessageFactory m) {
+        plugin = p;
+        adventure = b;
+        config = c;
+        offlinePlayerHandler = o;
+        messageFactory = m;
+
+        startReloadThread(null, true);
+    }
+
+    public void startReloadThread(CommandSender sender, boolean firstTimeLoading) {
+        reloadThread = new ReloadThread(config, offlinePlayerHandler, plugin, statThread, sender, firstTimeLoading);
+        reloadThread.start();
+    }
+
+    public void startStatThread(StatRequest request) {
+        statThread = new StatThread(request, reloadThread, adventure, config, offlinePlayerHandler, messageFactory, plugin);
+        statThread.start();
+    }
+
+    //store the time in milliseconds that the last top-stat-lookup took (or loading the offline-player-list if no look-ups have been done yet)
+    public static void recordCalcTime(long time) {
+        lastRecordedCalcTime = time;
+    }
+
+    //returns the time in milliseconds the last top-stat-lookup took (or loading the offline-player-list if no look-ups have been done yet)
+    public static long getLastRecordedCalcTime() {
+        return lastRecordedCalcTime;
+    }
+}

src/main/java/com/gmail/artemis/the/gr8/playerstats/commands/ReloadCommand.java

@@ -1,11 +1,7 @@
 package com.gmail.artemis.the.gr8.playerstats.commands;
 
-import com.gmail.artemis.the.gr8.playerstats.Main;
-import com.gmail.artemis.the.gr8.playerstats.filehandlers.ConfigHandler;
-import com.gmail.artemis.the.gr8.playerstats.utils.OfflinePlayerHandler;
-import com.gmail.artemis.the.gr8.playerstats.utils.MessageFactory;
+import com.gmail.artemis.the.gr8.playerstats.ThreadManager;
 
-import org.bukkit.ChatColor;
 import org.bukkit.command.Command;
 import org.bukkit.command.CommandExecutor;
 import org.bukkit.command.CommandSender;
@@ -13,26 +9,15 @@ import org.jetbrains.annotations.NotNull;
 
 public class ReloadCommand implements CommandExecutor {
 
-    private final ConfigHandler config;
-    private final OfflinePlayerHandler offlinePlayerHandler;
-    private final Main plugin;
+    private final ThreadManager threadManager;
 
-
-    public ReloadCommand(ConfigHandler c, OfflinePlayerHandler of, Main p) {
-        offlinePlayerHandler = of;
-        config = c;
-        plugin = p;
+    public ReloadCommand(ThreadManager t) {
+        threadManager = t;
     }
 
     @Override
     public boolean onCommand(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label, String[] args) {
-        if (config.reloadConfig()) {
-            offlinePlayerHandler.updateOfflinePlayerList();
-
-            plugin.getLogger().info("Amount of players: " + offlinePlayerHandler.getOfflinePlayerCount());
-            sender.sendMessage(MessageFactory.getPluginPrefix() + ChatColor.GREEN + "Config reloaded!");
+        threadManager.startReloadThread(sender, false);
         return true;
     }
-        return false;
-    }
 }

src/main/java/com/gmail/artemis/the/gr8/playerstats/commands/StatCommand.java

@@ -1,10 +1,10 @@
 package com.gmail.artemis.the.gr8.playerstats.commands;
 
 import com.gmail.artemis.the.gr8.playerstats.Main;
+import com.gmail.artemis.the.gr8.playerstats.ThreadManager;
 import com.gmail.artemis.the.gr8.playerstats.filehandlers.ConfigHandler;
 import com.gmail.artemis.the.gr8.playerstats.utils.EnumHandler;
-import com.gmail.artemis.the.gr8.playerstats.StatRequest;
-import com.gmail.artemis.the.gr8.playerstats.StatThread;
+import com.gmail.artemis.the.gr8.playerstats.statistic.StatRequest;
 import com.gmail.artemis.the.gr8.playerstats.utils.OfflinePlayerHandler;
 import com.gmail.artemis.the.gr8.playerstats.utils.MessageFactory;
 import net.kyori.adventure.platform.bukkit.BukkitAudiences;
@@ -19,18 +19,16 @@ import org.jetbrains.annotations.NotNull;
 
 public class StatCommand implements CommandExecutor {
 
+    private final ThreadManager threadManager;
     private final BukkitAudiences adventure;
-    private final ConfigHandler config;
     private final OfflinePlayerHandler offlinePlayerHandler;
     private final MessageFactory messageFactory;
-    private final Main plugin;
 
-    public StatCommand(BukkitAudiences b, ConfigHandler c, OfflinePlayerHandler of, MessageFactory o, Main p) {
+    public StatCommand(ThreadManager t, BukkitAudiences b, OfflinePlayerHandler of, MessageFactory o) {
+        threadManager = t;
         adventure = b;
-        config = c;
         offlinePlayerHandler = of;
         messageFactory = o;
-        plugin = p;
     }
 
     @Override
@@ -41,14 +39,12 @@ public class StatCommand implements CommandExecutor {
 
             //part 2: sending the information to the StatThread, or give feedback if request is invalid
             if (isValidStatRequest(request)) {
-                StatThread statThread = new StatThread(request, adventure, config, offlinePlayerHandler, messageFactory, plugin);
-                statThread.start();
+                threadManager.startStatThread(request);
                 return true;
             }
 
             else {
                 adventure.sender(sender).sendMessage(getRelevantFeedback(request));
-                //adventure.sender(sender).sendMessage(messageFactory.getHelpMsg());
                 return false;
             }
         }
@@ -60,7 +56,7 @@ public class StatCommand implements CommandExecutor {
         }
     }
 
-    private TextComponent getRelevantFeedback(StatRequest request) {
+    private TextComponent getRelevantFeedback(@NotNull StatRequest request) {
         if (request.getStatName() == null) {
             return messageFactory.missingStatName();
         }
@@ -102,7 +98,6 @@ public class StatCommand implements CommandExecutor {
                     if (request.getSubStatEntry() == null) request.setSubStatEntry(arg);
                 }
             }
-
             else if (arg.equalsIgnoreCase("top")) {
                 request.setTopFlag(true);
             }

src/main/java/com/gmail/artemis/the/gr8/playerstats/statistic/StatRequest.java

@@ -1,4 +1,4 @@
-package com.gmail.artemis.the.gr8.playerstats;
+package com.gmail.artemis.the.gr8.playerstats.statistic;
 
 import com.gmail.artemis.the.gr8.playerstats.utils.EnumHandler;
 import org.bukkit.Statistic;

src/main/java/com/gmail/artemis/the/gr8/playerstats/statistic/StatThread.java

@@ -1,5 +1,8 @@
-package com.gmail.artemis.the.gr8.playerstats;
+package com.gmail.artemis.the.gr8.playerstats.statistic;
 
+import com.gmail.artemis.the.gr8.playerstats.Main;
+import com.gmail.artemis.the.gr8.playerstats.ReloadThread;
+import com.gmail.artemis.the.gr8.playerstats.ThreadManager;
 import com.gmail.artemis.the.gr8.playerstats.filehandlers.ConfigHandler;
 import com.gmail.artemis.the.gr8.playerstats.utils.EnumHandler;
 import com.gmail.artemis.the.gr8.playerstats.utils.OfflinePlayerHandler;
@@ -9,6 +12,7 @@ import org.bukkit.OfflinePlayer;
 import org.bukkit.Statistic;
 import org.bukkit.command.CommandSender;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 import java.util.Comparator;
 import java.util.HashMap;
@@ -19,6 +23,7 @@ import java.util.stream.Collectors;
 public class StatThread extends Thread {
 
     private final StatRequest request;
+    private final ReloadThread reloadThread;
 
     private final BukkitAudiences adventure;
     private final ConfigHandler config;
@@ -27,8 +32,9 @@ public class StatThread extends Thread {
     private final Main plugin;
 
     //constructor (called on thread creation)
-    public StatThread(StatRequest s, BukkitAudiences b, ConfigHandler c, OfflinePlayerHandler of, MessageFactory o, Main p) {
+    public StatThread(StatRequest s, @Nullable ReloadThread r, BukkitAudiences b, ConfigHandler c, OfflinePlayerHandler of, MessageFactory o, Main p) {
         request = s;
+        reloadThread = r;
 
         adventure = b;
         config = c;
@@ -49,6 +55,16 @@ public class StatThread extends Thread {
         if (request == null) {
             throw new NullPointerException("No statistic request was found!");
         }
+        if (reloadThread != null && reloadThread.isAlive()) {
+            try {
+                plugin.getLogger().info("Waiting for reloadThread to finish up...");
+                adventure.sender(request.getCommandSender()).sendMessage(messageFactory.stillReloading());
+                reloadThread.join();
+            } catch (InterruptedException e) {
+                plugin.getLogger().warning(e.toString());
+                throw new RuntimeException(e);
+            }
+        }
 
         CommandSender sender = request.getCommandSender();
         String playerName = request.getPlayerName();
@@ -62,7 +78,7 @@ public class StatThread extends Thread {
                         messageFactory.formatPlayerStat(
                                 playerName, statName, subStatEntry, getStatistic(
                                         statName, subStatEntry, playerName)));
-                plugin.logTimeTaken("StatThread", "calculated individual stat", time);
+                plugin.logTimeTaken("StatThread", "calculating individual stat", time);
 
             } catch (Exception e) {
                 sender.sendMessage(messageFactory.formatExceptions(e.toString()));
@@ -70,11 +86,19 @@ public class StatThread extends Thread {
             }
 
         } else if (topFlag) {
+            if (ThreadManager.getLastRecordedCalcTime() > 30000) {
+                adventure.sender(sender).sendMessage(messageFactory.waitAMoment(true));
+            }
+            else if (ThreadManager.getLastRecordedCalcTime() > 2000) {
+                adventure.sender(sender).sendMessage(messageFactory.waitAMoment(false));
+            }
+
             try {
                 adventure.sender(sender).sendMessage(messageFactory.formatTopStats(
                         getTopStatistics(statName, subStatEntry), statName, subStatEntry));
 
-                plugin.logTimeTaken("StatThread", "calculated top stat", time);
+                plugin.logTimeTaken("StatThread", "calculating top stat", time);
+                ThreadManager.recordCalcTime(System.currentTimeMillis() - time);
 
             } catch (Exception e) {
                 sender.sendMessage(messageFactory.formatExceptions(e.toString()));
@@ -95,7 +119,6 @@ public class StatThread extends Thread {
         }
     }
 
-
     private LinkedHashMap<String, Integer> getTopStatistics(String statName, String subStatEntry) {
         try {
             Statistic stat = EnumHandler.getStatEnum(statName);

src/main/java/com/gmail/artemis/the/gr8/playerstats/utils/MessageFactory.java

@@ -22,7 +22,7 @@ public class MessageFactory {
     private static ConfigHandler config;
     private final Main plugin;
 
-    private static final TextColor errorColor = TextColor.fromHexString("#55aaff");
+    private static final TextColor msgColor = TextColor.fromHexString("#55aaff");
     private static final String pluginPrefix = ChatColor.GRAY + "[" + ChatColor.GOLD + "PlayerStats" + ChatColor.GRAY + "] " + ChatColor.RESET;
 
     public MessageFactory(ConfigHandler c, Main p) {
@@ -34,12 +34,21 @@ public class MessageFactory {
         return pluginPrefix;
     }
 
+    public TextComponent stillReloading() {
+        return text(getPluginPrefix()).append(text("The plugin is reloading, your request will be processed when it is done!").color(msgColor));
+    }
+
+    public TextComponent waitAMoment(boolean longWait) {
+        return longWait ? text(getPluginPrefix()).append(text("Calculating statistics, this may take a minute...").color(msgColor))
+                : text(getPluginPrefix()).append(text("Calculating statistics, this may take a few moments...").color(msgColor));
+    }
+
     public String formatExceptions(String exception) {
         return getPluginPrefix() + exception;
     }
 
     public TextComponent missingStatName() {
-        return text(getPluginPrefix()).append(text("Please provide a valid statistic name!").color(errorColor));
+        return text(getPluginPrefix()).append(text("Please provide a valid statistic name!").color(msgColor));
     }
 
     public TextComponent missingSubStatName(Statistic.Type statType) {
@@ -48,15 +57,15 @@ public class MessageFactory {
                 .append(text("Please add a valid ")
                         .append(text(subStat))
                         .append(text(" to look up this statistic!")))
-                .color(errorColor);
+                .color(msgColor);
     }
 
     public TextComponent missingTarget() {
-        return text(getPluginPrefix()).append(text("Please add \"me\", \"player\" or \"top\"").color(errorColor));
+        return text(getPluginPrefix()).append(text("Please add \"me\", \"player\" or \"top\"").color(msgColor));
     }
 
     public TextComponent missingPlayerName() {
-        return text(getPluginPrefix()).append(text("Please specify a valid player-name!").color(errorColor));
+        return text(getPluginPrefix()).append(text("Please specify a valid player-name!").color(msgColor));
     }
 
     public TextComponent wrongSubStatType(Statistic.Type statType, String subStatEntry) {
@@ -67,11 +76,11 @@ public class MessageFactory {
                         .append(text("\""))
                         .append(text(" is not a valid "))
                         .append(text(subStat)))
-                .color(errorColor);
+                .color(msgColor);
     }
 
     public TextComponent unknownError() {
-        return text(getPluginPrefix()).append(text("Something went wrong with your input. Check /statistic for a usage explanation").color(errorColor));
+        return text(getPluginPrefix()).append(text("Something went wrong with your input. Check /statistic for a usage explanation").color(msgColor));
     }
 
     public TextComponent helpMsg() {

src/main/java/com/gmail/artemis/the/gr8/playerstats/utils/OfflinePlayerHandler.java

@@ -13,7 +13,7 @@ public class OfflinePlayerHandler {
 
     public OfflinePlayerHandler(ConfigHandler c) {
         config = c;
-        updateOfflinePlayerList();
+        //updateOfflinePlayerList();
     }
 
     public boolean isOfflinePlayerName(String playerName) {
@@ -40,12 +40,15 @@ public class OfflinePlayerHandler {
             offlinePlayerUUIDs.clear();
         }
 
+        for (int i = 0; i <100; i++) {
+            int finalI = i;
             Arrays.stream(Bukkit.getOfflinePlayers()).filter(offlinePlayer ->
                     offlinePlayer.getName() != null &&
                         (!excludeBanned || !offlinePlayer.isBanned()) &&
                         (!whitelistOnly || offlinePlayer.isWhitelisted()) &&
                         (lastPlayedLimit == 0 || UnixTimeHandler.hasPlayedSince(lastPlayedLimit, offlinePlayer.getLastPlayed())))
-                .forEach(offlinePlayer -> offlinePlayerUUIDs.put(offlinePlayer.getName(), offlinePlayer.getUniqueId()));
+                    .forEach(offlinePlayer -> offlinePlayerUUIDs.put((offlinePlayer.getName() + finalI), offlinePlayer.getUniqueId()));
+        }
     }
 
     public OfflinePlayer getOfflinePlayer(String playerName) {