LibsDisguises/src/me/libraryaddict/disguise/utilities/ReflectionFlagWatchers.java

package me.libraryaddict.disguise.utilities;

import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;

import org.apache.commons.lang.StringUtils;
import org.bukkit.Art;
import org.bukkit.block.BlockFace;
import org.bukkit.entity.Horse;
import org.bukkit.entity.Llama;
import org.bukkit.entity.Ocelot;
import org.bukkit.entity.Rabbit;
import org.bukkit.entity.Villager;
import org.bukkit.inventory.ItemStack;
import org.bukkit.potion.PotionEffectType;

import com.comphenix.protocol.wrappers.BlockPosition;
import com.mojang.authlib.GameProfile;

import me.libraryaddict.disguise.disguisetypes.AnimalColor;
import me.libraryaddict.disguise.disguisetypes.Disguise;
import me.libraryaddict.disguise.disguisetypes.DisguiseType;
import me.libraryaddict.disguise.disguisetypes.FlagWatcher;

public class ReflectionFlagWatchers {
    public static class ParamInfo {
        private Class paramClass;
        private String name;
        private String[] enums;
        private String description;

        public ParamInfo(Class paramClass, String name, String description) {

            this.name = name;
            this.description = description;
            this.paramClass = paramClass;

            Enum[] enums = (Enum[]) paramClass.getEnumConstants();

            if (enums != null) {
                this.enums = new String[enums.length];

                for (int i = 0; i < enums.length; i++) {
                    this.enums[i] = enums[i].name();
                }
            }
        }

        public ParamInfo(Class paramClass, Enum[] enums, String name, String description) {
            this.name = name;
            this.enums = new String[enums.length];
            this.description = description;
            this.paramClass = paramClass;

            for (int i = 0; i < enums.length; i++) {
                this.enums[i] = enums[i].name();
            }
        }

        public ParamInfo(Class paramClass, String name, String description, String[] enums) {
            this.name = name;
            this.enums = enums;
            this.description = description;
            this.paramClass = paramClass;
        }

        public boolean isEnums() {
            return enums != null;
        }

        public Class getParamClass() {
            return paramClass;
        }

        public String getName() {
            return name;
        }

        public String getDescription() {
            return description;
        }

        public String[] getEnums() {
            return enums;
        }
    }

    private static ArrayList<ParamInfo> paramList = new ArrayList<ParamInfo>();

    public static ArrayList<ParamInfo> getParamInfos() {
        return paramList;
    }

    public static ParamInfo getParamInfo(Class c) {
        for (ParamInfo info : getParamInfos()) {
            if (info.getParamClass() != c)
                continue;

            return info;
        }

        return null;
    }

    public static ParamInfo getParamInfo(DisguiseType disguiseType, String methodName) {
        for (Method method : getDisguiseWatcherMethods(disguiseType.getWatcherClass())) {
            if (!method.getName().toLowerCase().equals(methodName.toLowerCase()))
                continue;

            if (method.getParameterTypes().length != 1)
                continue;

            if (method.getAnnotation(Deprecated.class) != null)
                continue;

            return getParamInfo(method.getParameterTypes()[0]);
        }

        return null;
    }

    static {
        paramList.add(new ParamInfo(AnimalColor.class, "Animal Color", "View all the colors you can use for an animal color"));
        paramList.add(new ParamInfo(Art.class, "Art", "View all the paintings you can use for a painting disguise"));
        paramList.add(new ParamInfo(Llama.Color.class, "Llama Color", "View all the colors you can use for a llama color"));
        paramList.add(new ParamInfo(Horse.Color.class, "Horse Color", "View all the colors you can use for a horses color"));
        paramList.add(new ParamInfo(Ocelot.Type.class, "Ocelot Type", "View all the ocelot types you can use for ocelots"));
        paramList.add(new ParamInfo(Villager.Profession.class, "Villager Profession",
                "View all the professions you can set on a villager"));
        paramList.add(new ParamInfo(BlockFace.class, Arrays.copyOf(BlockFace.values(), 5), "Direction",
                "View the five directions usable on player setSleeping disguise"));
        paramList.add(new ParamInfo(Rabbit.Type.class, "Rabbit Type", "View the kinds of rabbits you can turn into"));

        ArrayList<String> potionEnums = new ArrayList<String>();

        for (PotionEffectType effectType : PotionEffectType.values()) {
            if (effectType == null)
                continue;

            potionEnums.add(toReadable(effectType.getName()));
        }

        paramList.add(new ParamInfo(PotionEffectType.class, "Potion Effect", "View all the potion effects you can add",
                potionEnums.toArray(new String[0])));
        paramList.add(new ParamInfo(String.class, "Text", "A line of text"));
        paramList.add(new ParamInfo(boolean.class, "True/False", "True or False", new String[] {
                "true", "false"
        }));
        paramList.add(new ParamInfo(int.class, "Number", "A whole number, no decimcals"));
        paramList.add(new ParamInfo(double.class, "Number", "A number which can have decimals"));
        paramList.add(new ParamInfo(float.class, "Number", "A number which can have decimals"));
        paramList.add(new ParamInfo(ItemStack.class, "Item (id:damage)", "An ItemStack compromised of ID:Durability"));
        paramList.add(
                new ParamInfo(ItemStack[].class, "Four ItemStacks (id:damage,id:damage..)", "Four ItemStacks seperated by an ,"));
        paramList.add(new ParamInfo(Horse.Style.class, "Horse Style", "Horse style which is the patterns on the horse"));
        paramList.add(new ParamInfo(int[].class, "number,number,number...", "Numbers seperated by an ,"));
        paramList.add(new ParamInfo(BlockPosition.class, "Block Position (num,num,num)", "Three numbers seperated by an ,"));
        paramList.add(new ParamInfo(GameProfile.class, "GameProfile",
                "Get the gameprofile here https://sessionserver.mojang.com/session/minecraft/profile/PLAYER_UUID_GOES_HERE?unsigned=false"));
    }

    public static Method[] getDisguiseWatcherMethods(Class<? extends FlagWatcher> watcherClass) {
        ArrayList<Method> methods = new ArrayList<Method>(Arrays.asList(watcherClass.getMethods()));

        Iterator<Method> itel = methods.iterator();

        while (itel.hasNext()) {
            Method method = itel.next();

            if (method.getParameterTypes().length != 1) {
                itel.remove();
            }
            else if (method.getName().startsWith("get")) {
                itel.remove();
            }
            else if (method.getAnnotation(Deprecated.class) != null) {
                itel.remove();
            }
            else if (getParamInfo(method.getParameterTypes()[0]) == null) {
                itel.remove();
            }
            else if (!method.getReturnType().equals(Void.TYPE)) {
                itel.remove();
            }
        }

        for (String methodName : new String[] {
                "setViewSelfDisguise", "setHideHeldItemFromSelf", "setHideArmorFromSelf", "setHearSelfDisguise"
        }) {
            try {
                methods.add(Disguise.class.getMethod(methodName, boolean.class));
            }
            catch (Exception ex) {
                ex.printStackTrace();
            }
        }

        return methods.toArray(new Method[0]);
    }

    private static String toReadable(String string) {
        String[] split = string.split("_");

        for (int i = 0; i < split.length; i++) {
            split[i] = split[i].substring(0, 1) + split[i].substring(1).toLowerCase();
        }

        return StringUtils.join(split, "_");
    }
}