package me.libraryaddict.disguise;

import com.comphenix.protocol.reflect.FieldAccessException;
import com.comphenix.protocol.wrappers.WrappedDataWatcher;
import com.comphenix.protocol.wrappers.WrappedWatchableObject;
import me.libraryaddict.disguise.commands.CloneDisguiseCommand;
import me.libraryaddict.disguise.commands.DisguiseCommand;
import me.libraryaddict.disguise.commands.DisguiseViewSelf;
import me.libraryaddict.disguise.commands.EntityDisguiseCommand;
import me.libraryaddict.disguise.commands.HelpDisguiseCommand;
import me.libraryaddict.disguise.commands.LibsDisguisesCommand;
import me.libraryaddict.disguise.commands.PlayerDisguiseCommand;
import me.libraryaddict.disguise.commands.RadiusDisguiseCommand;
import me.libraryaddict.disguise.commands.UndisguiseCommand;
import me.libraryaddict.disguise.commands.UndisguiseEntityCommand;
import me.libraryaddict.disguise.commands.UndisguisePlayerCommand;
import me.libraryaddict.disguise.commands.UndisguiseRadiusCommand;
import me.libraryaddict.disguise.disguisetypes.DisguiseType;
import me.libraryaddict.disguise.disguisetypes.FlagWatcher;
import me.libraryaddict.disguise.disguisetypes.watchers.AgeableWatcher;
import me.libraryaddict.disguise.disguisetypes.watchers.GuardianWatcher;
import me.libraryaddict.disguise.disguisetypes.watchers.HorseWatcher;
import me.libraryaddict.disguise.disguisetypes.watchers.LivingWatcher;
import me.libraryaddict.disguise.disguisetypes.watchers.MinecartWatcher;
import me.libraryaddict.disguise.disguisetypes.watchers.SlimeWatcher;
import me.libraryaddict.disguise.disguisetypes.watchers.TameableWatcher;
import me.libraryaddict.disguise.disguisetypes.watchers.ZombieWatcher;
import me.libraryaddict.disguise.utilities.DisguiseSound;
import me.libraryaddict.disguise.utilities.DisguiseUtilities;
import me.libraryaddict.disguise.utilities.DisguiseValues;
import me.libraryaddict.disguise.utilities.FakeBoundingBox;
import me.libraryaddict.disguise.utilities.Metrics;
import me.libraryaddict.disguise.utilities.PacketsManager;
import me.libraryaddict.disguise.utilities.ReflectionManager;
import org.bukkit.Bukkit;
import org.bukkit.entity.Ageable;
import org.bukkit.entity.Damageable;
import org.bukkit.entity.Entity;
import org.bukkit.entity.LivingEntity;
import org.bukkit.entity.Tameable;
import org.bukkit.entity.Zombie;
import org.bukkit.event.HandlerList;
import org.bukkit.plugin.java.JavaPlugin;

import java.io.IOException;
import java.lang.reflect.Field;

public class LibsDisguises extends JavaPlugin {

    private static LibsDisguises instance;
    private DisguiseListener listener;

    @Override
    public void onEnable() {
        getLogger().info("Discovered MC version: " + ReflectionManager.getBukkitVersion());
        saveDefaultConfig();

        PacketsManager.init(this);
        DisguiseUtilities.init(this);
        DisguiseConfig.initConfig(getConfig());

        PacketsManager.addPacketListeners();
        listener = new DisguiseListener(this);
        Bukkit.getPluginManager().registerEvents(listener, this);
        getCommand("disguise").setExecutor(new DisguiseCommand());
        getCommand("undisguise").setExecutor(new UndisguiseCommand());
        getCommand("disguiseplayer").setExecutor(new PlayerDisguiseCommand());
        getCommand("undisguiseplayer").setExecutor(new UndisguisePlayerCommand());
        getCommand("undisguiseentity").setExecutor(new UndisguiseEntityCommand());
        getCommand("disguiseentity").setExecutor(new EntityDisguiseCommand());
        getCommand("disguiseradius").setExecutor(new RadiusDisguiseCommand(getConfig().getInt("DisguiseRadiusMax")));
        getCommand("undisguiseradius").setExecutor(new UndisguiseRadiusCommand(getConfig().getInt("UndisguiseRadiusMax")));
        getCommand("disguisehelp").setExecutor(new HelpDisguiseCommand());
        getCommand("disguiseclone").setExecutor(new CloneDisguiseCommand());
        getCommand("libsdisguises").setExecutor(new LibsDisguisesCommand());
        getCommand("disguiseviewself").setExecutor(new DisguiseViewSelf());
        registerValues();
        instance = this;
        try {
            Metrics metrics = new Metrics(this);
            metrics.start();
        } catch (IOException e) {
        }
    }

    /**
     * Reloads the config with new config options.
     */
    public void reload() {
        HandlerList.unregisterAll(listener);
        reloadConfig();
        DisguiseConfig.initConfig(getConfig());
    }

    /**
     * Here we create a nms entity for each disguise. Then grab their default values in their datawatcher. Then their sound volume for mob noises. As well as setting their watcher class and entity size.
     */
    private void registerValues() {
        for (DisguiseType disguiseType : DisguiseType.values()) {
            if (disguiseType.getEntityType() == null) {
                continue;
            }
            Class watcherClass;
            try {
                switch (disguiseType) {
                    case MINECART_CHEST:
                    case MINECART_COMMAND:
                    case MINECART_FURNACE:
                    case MINECART_HOPPER:
                    case MINECART_MOB_SPAWNER:
                    case MINECART_TNT:
                        watcherClass = MinecartWatcher.class;
                        break;
                    case DONKEY:
                    case MULE:
                    case UNDEAD_HORSE:
                    case SKELETON_HORSE:
                        watcherClass = HorseWatcher.class;
                        break;
                    case ZOMBIE_VILLAGER:
                    case PIG_ZOMBIE:
                        watcherClass = ZombieWatcher.class;
                        break;
                    case MAGMA_CUBE:
                        watcherClass = SlimeWatcher.class;
                        break;
                    case ELDER_GUARDIAN:
                        watcherClass = GuardianWatcher.class;
                        break;
                    case ENDERMITE:
                        watcherClass = LivingWatcher.class;
                        break;
                    default:
                        watcherClass = Class.forName("me.libraryaddict.disguise.disguisetypes.watchers."
                                + toReadable(disguiseType.name()) + "Watcher");
                        break;
                }
            } catch (ClassNotFoundException ex) {
                // There is no explicit watcher for this entity.
                Class entityClass = disguiseType.getEntityType().getEntityClass();
                if (entityClass != null) {
                    if (Tameable.class.isAssignableFrom(entityClass)) {
                        watcherClass = TameableWatcher.class;
                    } else if (Ageable.class.isAssignableFrom(entityClass)) {
                        watcherClass = AgeableWatcher.class;
                    } else if (LivingEntity.class.isAssignableFrom(entityClass)) {
                        watcherClass = LivingWatcher.class;
                    } else {
                        watcherClass = FlagWatcher.class;
                    }
                } else {
                    watcherClass = FlagWatcher.class; //Disguise is unknown type
                }
            }
            disguiseType.setWatcherClass(watcherClass);
            if (DisguiseValues.getDisguiseValues(disguiseType) != null) {
                continue;
            }
            String nmsEntityName = toReadable(disguiseType.name());
            switch (disguiseType) {
                case WITHER_SKELETON:
                case ZOMBIE_VILLAGER:
                case DONKEY:
                case MULE:
                case UNDEAD_HORSE:
                case SKELETON_HORSE:
                    continue;
                case PRIMED_TNT:
                    nmsEntityName = "TNTPrimed";
                    break;
                case MINECART_TNT:
                    nmsEntityName = "MinecartTNT";
                    break;
                case MINECART:
                    nmsEntityName = "MinecartRideable";
                    break;
                case FIREWORK:
                    nmsEntityName = "Fireworks";
                    break;
                case SPLASH_POTION:
                    nmsEntityName = "Potion";
                    break;
                case GIANT:
                    nmsEntityName = "GiantZombie";
                    break;
                case DROPPED_ITEM:
                    nmsEntityName = "Item";
                    break;
                case FIREBALL:
                    nmsEntityName = "LargeFireball";
                    break;
                case LEASH_HITCH:
                    nmsEntityName = "Leash";
                    break;
                case ELDER_GUARDIAN:
                    nmsEntityName = "Guardian";
                    break;
                default:
                    break;
            }
            try {
                if (nmsEntityName.equalsIgnoreCase("Unknown")) {
                    DisguiseValues disguiseValues = new DisguiseValues(disguiseType, null, 0, 0);
                    disguiseValues.setAdultBox(new FakeBoundingBox(0, 0, 0));
                    DisguiseSound sound = DisguiseSound.getType(disguiseType.name());
                    if (sound != null) {
                        sound.setDamageAndIdleSoundVolume(1f);
                    }
                    continue;
                }
                Object nmsEntity = ReflectionManager.createEntityInstance(nmsEntityName);
                if (nmsEntity == null) {
                    getLogger().warning("Entity not found! (" + nmsEntityName + ")");
                    continue;
                }
                Entity bukkitEntity = ReflectionManager.getBukkitEntity(nmsEntity);
                int entitySize = 0;
                for (Field field : ReflectionManager.getNmsClass("Entity").getFields()) {
                    if (field.getType().getName().equals("EnumEntitySize")) {
                        Enum enumEntitySize = (Enum) field.get(nmsEntity);
                        entitySize = enumEntitySize.ordinal();
                        break;
                    }
                }
                DisguiseValues disguiseValues = new DisguiseValues(disguiseType, nmsEntity.getClass(), entitySize,
                        bukkitEntity instanceof Damageable ? ((Damageable) bukkitEntity).getMaxHealth() : 0);
                WrappedDataWatcher watcher = WrappedDataWatcher.getEntityWatcher(bukkitEntity);
                for (WrappedWatchableObject watch : watcher.getWatchableObjects()) {
                    disguiseValues.setMetaValue(watch.getIndex(), watch.getValue());
                    // Uncomment when I need to find the new datawatcher values for a class..
//                    System.out.print("Disguise: " + disguiseType + ", ID: " + watch.getIndex() + ", Class: "
//                     + (watch.getValue() == null ? "null" : watch.getValue().getClass()) + ", Value: " + watch.getValue());
                }
                DisguiseSound sound = DisguiseSound.getType(disguiseType.name());
                if (sound != null) {
                    Float soundStrength = ReflectionManager.getSoundModifier(nmsEntity);
                    if (soundStrength != null) {
                        sound.setDamageAndIdleSoundVolume(soundStrength);
                    }
                }

                // Get the bounding box
                disguiseValues.setAdultBox(ReflectionManager.getBoundingBox(bukkitEntity));
                if (bukkitEntity instanceof Ageable) {
                    ((Ageable) bukkitEntity).setBaby();
                    disguiseValues.setBabyBox(ReflectionManager.getBoundingBox(bukkitEntity));
                } else if (bukkitEntity instanceof Zombie) {
                    ((Zombie) bukkitEntity).setBaby(true);
                    disguiseValues.setBabyBox(ReflectionManager.getBoundingBox(bukkitEntity));
                }
                disguiseValues.setEntitySize(ReflectionManager.getSize(bukkitEntity));
            } catch (SecurityException | IllegalArgumentException | IllegalAccessException | FieldAccessException ex) {
                System.out.print("[LibsDisguises] Uh oh! Trouble while making values for the disguise " + disguiseType.name()
                        + "!");
                System.out.print("[LibsDisguises] Before reporting this error, "
                        + "please make sure you are using the latest version of LibsDisguises and ProtocolLib.");
                System.out
                        .print("[LibsDisguises] Development builds are available at (ProtocolLib) "
                                + "http://ci.dmulloy2.net/job/ProtocolLib/ and (LibsDisguises) http://server.o2gaming.com:8080/job/LibsDisguises%201.9+/");

                ex.printStackTrace(System.out);
            }
        }
    }

    private String toReadable(String string) {
        StringBuilder builder = new StringBuilder();
        for (String s : string.split("_")) {
            builder.append(s.substring(0, 1)).append(s.substring(1).toLowerCase());
        }
        return builder.toString();
    }

    public DisguiseListener getListener() {
        return listener;
    }

    /**
     * External APIs shouldn't actually need this instance.
     * DisguiseAPI should be enough to handle most cases.
     *
     * @return The instance of this plugin
     */
    public static LibsDisguises getInstance() {
        return instance;
    }
}