complete level logic

src/main/java/me/xginko/villageroptimizer/models/WrappedVillager.java

@@ -136,7 +136,7 @@ public final class WrappedVillager {
      * @return The system time in millis when the villager was last optimized, 0L if the villager was never optimized.
      */
     public boolean canLevelUp(final long cooldown_millis) {
-        return dataContainer.has(Keys.LAST_LEVELUP.key(), PersistentDataType.LONG) && dataContainer.get(Keys.LAST_LEVELUP.key(), PersistentDataType.LONG) + cooldown_millis <= villager.getWorld().getFullTime();
+        return getLastLevelUpTime() + cooldown_millis <= villager.getWorld().getFullTime();
     }
 
     /**
@@ -155,4 +155,8 @@ public final class WrappedVillager {
     public long getLastLevelUpTime() {
         return dataContainer.has(Keys.LAST_LEVELUP.key(), PersistentDataType.LONG) ? dataContainer.get(Keys.LAST_LEVELUP.key(), PersistentDataType.LONG) : 0L;
     }
+
+    public long getLevelCooldownMillis(final long cooldown_millis) {
+        return dataContainer.has(Keys.LAST_LEVELUP.key(), PersistentDataType.LONG) ? (villager.getWorld().getFullTime() - (dataContainer.get(Keys.LAST_OPTIMIZE.key(), PersistentDataType.LONG) + cooldown_millis)) : cooldown_millis;
+    }
 }

src/main/java/me/xginko/villageroptimizer/modules/LevelVillagers.java

@@ -3,7 +3,12 @@ package me.xginko.villageroptimizer.modules;
 import me.xginko.villageroptimizer.VillagerOptimizer;
 import me.xginko.villageroptimizer.cache.VillagerManager;
 import me.xginko.villageroptimizer.config.Config;
+import me.xginko.villageroptimizer.enums.OptimizationType;
 import me.xginko.villageroptimizer.models.WrappedVillager;
+import me.xginko.villageroptimizer.utils.CommonUtils;
+import net.kyori.adventure.text.TextReplacementConfig;
+import org.bukkit.entity.EntityType;
+import org.bukkit.entity.Player;
 import org.bukkit.entity.Villager;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.EventPriority;
@@ -11,6 +16,9 @@ import org.bukkit.event.HandlerList;
 import org.bukkit.event.Listener;
 import org.bukkit.event.inventory.InventoryCloseEvent;
 import org.bukkit.event.inventory.InventoryType;
+import org.bukkit.event.player.PlayerInteractEntityEvent;
+import org.bukkit.potion.PotionEffect;
+import org.bukkit.potion.PotionEffectType;
 
 public class LevelVillagers implements VillagerOptimizerModule, Listener {
 
@@ -55,9 +63,33 @@ public class LevelVillagers implements VillagerOptimizerModule, Listener {
                 && event.getInventory().getHolder() instanceof Villager villager
         ) {
             WrappedVillager wVillager = villagerManager.getOrAdd(villager);
-            if (!wVillager.isOptimized()) return;
+            if (
+                    wVillager.isOptimized()
+                    && wVillager.canLevelUp(cooldown)
+                    && wVillager.calculateLevel() > villager.getVillagerLevel()
+            ) {
+                villager.addPotionEffect(new PotionEffect(PotionEffectType.SLOW, (int) (20 + (cooldown / 50L)), 120, false, false));
+                final OptimizationType previousOptimization = wVillager.getOptimizationType();
+                wVillager.setOptimization(OptimizationType.OFF);
+                villager.getScheduler().runDelayed(plugin, reOptimize -> {
+                    wVillager.setOptimization(previousOptimization);
+                    wVillager.saveLastLevelUp();
+                }, null, 100L);
+            }
+        }
+    }
 
-            // logic missing
+    @EventHandler(priority = EventPriority.NORMAL, ignoreCancelled = true)
+    private void onInteract(PlayerInteractEntityEvent event) {
+        if (!event.getRightClicked().getType().equals(EntityType.VILLAGER)) return;
+        WrappedVillager wVillager = villagerManager.getOrAdd((Villager) event.getRightClicked());
+        if (wVillager.isOptimized() && !wVillager.canLevelUp(cooldown)) {
+            event.setCancelled(true);
+            Player player = event.getPlayer();
+            String timeLeft = CommonUtils.formatTime(wVillager.getLevelCooldownMillis(cooldown));
+            VillagerOptimizer.getLang(player.locale()).villager_leveling_up.forEach(line -> player.sendMessage(line
+                    .replaceText(TextReplacementConfig.builder().matchLiteral("%time%").replacement(timeLeft).build())
+            ));
         }
     }
 }

src/main/java/me/xginko/villageroptimizer/modules/NametagOptimization.java

@@ -94,9 +94,9 @@ public class NametagOptimization implements VillagerOptimizerModule, Listener {
                 event.setCancelled(true);
                 wVillager.villager().shakeHead();
                 if (shouldNotifyPlayer) {
-                    final long optimizeCoolDown = wVillager.getOptimizeCooldownMillis(cooldown);
+                    final String time = CommonUtils.formatTime(wVillager.getOptimizeCooldownMillis(cooldown));
                     VillagerOptimizer.getLang(player.locale()).nametag_on_optimize_cooldown.forEach(line -> player.sendMessage(line
-                            .replaceText(TextReplacementConfig.builder().matchLiteral("%time%").replacement(CommonUtils.formatTime(optimizeCoolDown)).build())));
+                            .replaceText(TextReplacementConfig.builder().matchLiteral("%time%").replacement(time).build())));
                 }
             }
         } else {