JSONApi

import java.lang.reflect.Constructor;
import java.util.ArrayList;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.bukkit.Bukkit;
import org.bukkit.entity.Player;

public class JSONMessage {

    public enum ClickAction{
        RUN_COMMAND, SUGGEST_COMMAND, OPEN_URL
    }

    public enum HoverAction{
        SHOW_TEXT
    }

    private static final String version = Bukkit.getServer().getClass().getPackage().getName().split("\\.")[3];
    private static final Pattern pattern = Pattern.compile("([&|§][a-fA-F0-9k-oK-orR]){1}");
    private ArrayList<String> partes;
    private String json = "";

    public JSONMessage(){
        json += "[\"\",";
        partes = new ArrayList<>();
    }

    public JSONMessage parseToJSON(String text){
        Matcher matcher = pattern.matcher(text);
        if(matcher.find()){
            String cor = "";
            String palavra = "";
            String geral = "";
            char[] array = text.toCharArray();
            for(int j = 0; j<array.length; j++){
                if(j+1 != array.length && pattern.matcher(String.valueOf(array[j]) + String.valueOf(array[j+1])).matches()){
                    cor += String.valueOf(array[j]) + String.valueOf(array[j+1]);
                    j+=1;
                }else{
                    palavra += array[j];
                    if(j+1 != array.length){
                        if(String.valueOf(array[j+1]).matches("&|§")){
                            /*json += "{\"text\":\"" + palavra + "\"";
                            json += getFormat(cor);
                            json += "},";*/
                            geral += "{\"text\":\"" + palavra + "\"" + getFormat(cor) + "},";
                            partes.add(geral);
                            cor = "";
                            palavra = "";
                            geral = "";
                        }
                    }else{
                        /*json += "{\"text\":\"" + palavra + "\"";
                        json += getFormat(cor);
                        json += "},";*/
                        geral += "{\"text\":\"" + palavra + "\"" + getFormat(cor) + "},";
                        partes.add(geral);
                        geral = "";
                    }
                }
            }
        }
        return this;
    }

    private String getFormat(String cor){
        String retornar = "";
        if(cor.matches("(.+)?([&§]0)(.+)?")) retornar += ",\"color\":\"black\"";
        if(cor.matches("(.+)?([&§]1)(.+)?")) retornar += ",\"color\":\"dark_blue\"";
        if(cor.matches("(.+)?([&§]2)(.+)?")) retornar += ",\"color\":\"dark_green\"";
        if(cor.matches("(.+)?([&§]3)(.+)?")) retornar += ",\"color\":\"dark_aqua\"";
        if(cor.matches("(.+)?([&§]4)(.+)?")) retornar += ",\"color\":\"dark_red\"";
        if(cor.matches("(.+)?([&§]5)(.+)?")) retornar += ",\"color\":\"dark_purple\"";
        if(cor.matches("(.+)?([&§]6)(.+)?")) retornar += ",\"color\":\"gold\"";
        if(cor.matches("(.+)?([&§]7)(.+)?")) retornar += ",\"color\":\"gray\"";
        if(cor.matches("(.+)?([&§]8)(.+)?")) retornar += ",\"color\":\"dark_gray\"";
        if(cor.matches("(.+)?([&§]9)(.+)?")) retornar += ",\"color\":\"blue\"";
        if(cor.matches("(.+)?([&§]a)(.+)?")) retornar += ",\"color\":\"green\"";
        if(cor.matches("(.+)?([&§]b)(.+)?")) retornar += ",\"color\":\"aqua\"";
        if(cor.matches("(.+)?([&§]c)(.+)?")) retornar += ",\"color\":\"red\"";
        if(cor.matches("(.+)?([&§]d)(.+)?")) retornar += ",\"color\":\"light_purple\"";
        if(cor.matches("(.+)?([&§]e)(.+)?")) retornar += ",\"color\":\"yellow\"";
        if(cor.matches("(.+)?([&§]f)(.+)?")) retornar += ",\"color\":\"white\"";
        if(cor.matches("(.+)?([&§]k)(.+)?")) retornar += ",\"obfuscated\":true";
        if(cor.matches("(.+)?([&§]l)(.+)?")) retornar += ",\"bold\":true";
        if(cor.matches("(.+)?([&§]m)(.+)?")) retornar += ",\"strikethrough\":true";
        if(cor.matches("(.+)?([&§]n)(.+)?")) retornar += ",\"underlined\":true";
        if(cor.matches("(.+)?([&§]o)(.+)?")) retornar += ",\"italic\":true";
        return retornar;
    }

    public JSONMessage addText(String text){
        if(partes.size()>0){
            for(String parte : partes){
                json += parte;
            }
            partes.clear();
        }
        Matcher matcher = pattern.matcher(text);
        if(matcher.find()){
            parseToJSON(text);
        }else{
            json += "{\"text\":\"" + text + "\"},";
        }
        return this;
    }

    public JSONMessage withHoverAction(HoverAction hoveraction, String value){
        for(int i = 0; i<partes.size(); i++){
            String parte = partes.get(i);
            if(parte.endsWith("},")) parte = parte.substring(0, parte.length()-2);
            parte += ",\"hoverEvent\":{\"action\":\"" + hoveraction.name().toLowerCase() + "\",\"value\":\"" + value + "\"}},";
            partes.set(i, parte);
        }
        return this;
    }

    public JSONMessage withClickAction(ClickAction clickaction, String value){
        for(int i = 0; i<partes.size(); i++){
            String parte = partes.get(i);
            if(parte.endsWith("},")) parte = parte.substring(0, parte.length()-2);
            parte += ",\"clickEvent\":{\"action\":\"" + clickaction.name().toLowerCase() + "\",\"value\":\"" + value + "\"}},";
            partes.set(i, parte);
        }
        return this;
    }

    public JSONMessage removeLastElement(){
        if(partes.size()>0){
            for(String parte : partes){
                json += parte;
            }
            partes.clear();
        }
        this.json = json.substring(0, json.lastIndexOf("{\"text\":\""));
        return this;
    }

    @Override
    public String toString(){
        return this.json;
    }

    public void sendJson(Player p){
        try {
            if(partes.size()>0){
                for(String parte : partes){
                    json += parte;
                }
                partes.clear();
            }
            if(json.endsWith(",")) json = json.substring(0, json.length()-1);
            if(!json.endsWith("]")) json += "]";
            Class<?> chatSerializer = Class.forName("net.minecraft.server." + version + ".IChatBaseComponent$ChatSerializer");
            Class<?> chatComponent = Class.forName("net.minecraft.server." + version + ".IChatBaseComponent");
            Class<?> packet = Class.forName("net.minecraft.server." + version + ".PacketPlayOutChat");
            Constructor<?> constructor = packet.getConstructor(chatComponent);

            Object text = chatSerializer.getMethod("a", String.class).invoke(chatSerializer, json);
            Object packetFinal = constructor.newInstance(text);

            Object handle = p.getClass().getMethod("getHandle").invoke(p);
            Object playerConnection = handle.getClass().getField("playerConnection").get(handle);
            playerConnection.getClass().getMethod("sendPacket", Class.forName("net.minecraft.server." + version + ".Packet")).invoke(playerConnection, packetFinal);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}