Fix AdventCalender only in December, Reduce code duplication

src/de/steamwar/lobby/listener/InventoryInteraction.java

@@ -21,6 +21,7 @@ package de.steamwar.lobby.listener;
 
 import de.steamwar.lobby.LobbySystem;
 import de.steamwar.lobby.command.ModifyCommand;
+import de.steamwar.lobby.special.advent.AdventsCalendar;
 import org.bukkit.Bukkit;
 import org.bukkit.Material;
 import org.bukkit.event.EventHandler;
@@ -33,9 +34,6 @@ import org.bukkit.event.player.PlayerPickupItemEvent;
 import org.bukkit.event.player.PlayerSwapHandItemsEvent;
 import org.bukkit.inventory.ItemStack;
 
-import java.time.LocalDate;
-import java.time.Month;
-
 public class InventoryInteraction extends BasicListener {
 
     @EventHandler
@@ -46,9 +44,7 @@ public class InventoryInteraction extends BasicListener {
 
         if(item.getType() == Material.FIREWORK_ROCKET && (event.getAction() == Action.RIGHT_CLICK_AIR || event.getAction() == Action.RIGHT_CLICK_BLOCK)) {
             int offset;
-            LocalDate localDate = LocalDate.now();
-            Month month = localDate.getMonth();
-            if (month == Month.NOVEMBER || month == Month.DECEMBER || month == Month.JANUARY) {
+            if (AdventsCalendar.active()) {
                 offset = -1;
             } else {
                 offset = 0;

src/de/steamwar/lobby/listener/PlayerSpawn.java

@@ -21,6 +21,7 @@ package de.steamwar.lobby.listener;
 
 import de.steamwar.lobby.LobbySystem;
 import de.steamwar.lobby.boatrace.BoatRace;
+import de.steamwar.lobby.special.advent.AdventsCalendar;
 import de.steamwar.lobby.util.ItemBuilder;
 import de.steamwar.network.NetworkSender;
 import de.steamwar.network.packets.client.ImALobbyPacket;
@@ -36,9 +37,6 @@ import org.bukkit.inventory.EquipmentSlot;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.inventory.PlayerInventory;
 
-import java.time.LocalDate;
-import java.time.Month;
-
 public class PlayerSpawn extends BasicListener {
 
     public static final int FIREWORK_SLOT = 2;
@@ -75,9 +73,7 @@ public class PlayerSpawn extends BasicListener {
         inventory.setItem(EquipmentSlot.CHEST, ELYTRA);
 
         int offset = 0;
-        LocalDate localDate = LocalDate.now();
-        Month month = localDate.getMonth();
-        if (month == Month.NOVEMBER || month == Month.DECEMBER || month == Month.JANUARY) {
+        if (AdventsCalendar.active()) {
             offset = -1;
         }
 

src/de/steamwar/lobby/special/advent/AdventCommand.java

@@ -29,8 +29,6 @@ import de.steamwar.sql.SteamwarUser;
 import org.bukkit.Material;
 import org.bukkit.entity.Player;
 
-import java.time.LocalDate;
-import java.time.Month;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Random;
@@ -59,13 +57,11 @@ public class AdventCommand extends SWCommand {
 
     @Register
     public void genericCommand(Player player, String... args) {
-        LocalDate localDate = LocalDate.now();
-        Month month = localDate.getMonth();
-        if (month != Month.NOVEMBER && month != Month.DECEMBER && month != Month.JANUARY) {
+        if (!AdventsCalendar.active()) {
             return;
         }
 
-        Random random = new Random(localDate.getYear());
+        Random random = new Random();
 
         List<SWListInv.SWListEntry<Present>> itemList = new ArrayList<>();
         SteamwarUser steamwarUser = SteamwarUser.get(player.getUniqueId());

src/de/steamwar/lobby/special/advent/AdventListener.java

@@ -28,9 +28,6 @@ import org.bukkit.event.player.PlayerInteractEvent;
 import org.bukkit.event.player.PlayerJoinEvent;
 import org.bukkit.inventory.ItemStack;
 
-import java.time.LocalDate;
-import java.time.Month;
-
 public class AdventListener extends BasicListener {
 
     public static final int ADVENT_SLOT = 7;
@@ -52,9 +49,7 @@ public class AdventListener extends BasicListener {
 
     @EventHandler(priority = EventPriority.HIGH)
     public void onJoin(PlayerJoinEvent e) {
-        LocalDate localDate = LocalDate.now();
-        Month month = localDate.getMonth();
-        if (month != Month.NOVEMBER && month != Month.DECEMBER && month != Month.JANUARY) {
+        if (!AdventsCalendar.active()) {
             return;
         }
         e.getPlayer().getInventory().setItem(ADVENT_SLOT, ADVENT.getItemStack());

src/de/steamwar/lobby/special/advent/AdventsCalendar.java

@@ -26,6 +26,8 @@ import org.bukkit.configuration.file.YamlConfiguration;
 
 import java.io.File;
 import java.io.IOException;
+import java.time.LocalDate;
+import java.time.Month;
 import java.util.ArrayList;
 import java.util.List;
 
@@ -70,4 +72,10 @@ public class AdventsCalendar {
         }
         System.out.println("Save time: " + (System.currentTimeMillis() - time) + "ms");
     }
+
+    public static boolean active() {
+        LocalDate localDate = LocalDate.now();
+        Month month = localDate.getMonth();
+        return month == Month.DECEMBER;
+    }
 }

src/de/steamwar/lobby/special/advent/PresentClickListener.java

@@ -29,7 +29,6 @@ import org.bukkit.event.player.PlayerInteractEvent;
 import org.bukkit.event.player.PlayerJoinEvent;
 
 import java.time.LocalDate;
-import java.time.Month;
 
 public class PresentClickListener extends BasicListener {
 
@@ -37,9 +36,8 @@ public class PresentClickListener extends BasicListener {
     public void onPlayerJoin(PlayerJoinEvent event) {
         LocalDate localDate = LocalDate.now();
         int day = localDate.getDayOfMonth();
-        Month month = localDate.getMonth();
 
-        if (month != Month.DECEMBER) {
+        if (!AdventsCalendar.active()) {
             return;
         }
         AdventsCalendar.getPresentList().forEach(present -> {
@@ -56,9 +54,8 @@ public class PresentClickListener extends BasicListener {
 
         LocalDate localDate = LocalDate.now();
         int day = localDate.getDayOfMonth();
-        Month month = localDate.getMonth();
 
-        if (month != Month.DECEMBER) {
+        if (!AdventsCalendar.active()) {
             return;
         }