/*global Java, base, module, exports, require*/
var nmsChatSerializerClass;
var nmsChatSerializerMethod;
var packetTypeConstructor;
var nmsChatMessageTypeClass;
var chatMessageTypes;

var RemapUtils;

var playerConnectionFieldName;
var sendPacketMethod;

var downgrade = false;
/**
 * 获取NMS版本
 */
//@ts-ignore
var nmsVersion = org.bukkit.Bukkit.server.class.name.split('.')[3];
/**
 * 获取NMS类
 */
function nmsCls(name) {
    return base.getClass(['net.minecraft.server', nmsVersion, name].join('.'))
}

function remapMethod(clazz: any, origin: string, test: string, params) {
    try {
        return clazz.getMethod(origin, params)
    } catch (ex) {
        if (RemapUtils) {
            return clazz.getMethod(RemapUtils.mapMethod(clazz, origin, params), params)
        } else {
            return clazz.getMethod(test, params)
        }
    }
}

function remapFieldName(clazz: any, origin: string, test: string) {
    try {
        return clazz.getField(origin)
    } catch (ex) {
        if (RemapUtils) {
            return clazz.getField(RemapUtils.mapFieldName(clazz, origin))
        } else {
            return clazz.getField(test)
        }
    }
}

function init() {
    try {
        RemapUtils = Java.type('catserver.server.remapper.RemapUtils');
    } catch (ex) {
    }
    nmsChatSerializerClass = nmsCls(nmsVersion.split("_")[1] > 7 ? "IChatBaseComponent$ChatSerializer" : "ChatSerializer");
    nmsChatSerializerMethod = remapMethod(nmsChatSerializerClass, 'a', 'func_150699_a', base.getClass('java.lang.String'))
    var packetTypeClass = nmsCls("PacketPlayOutChat");
    Java.from(packetTypeClass.constructors).forEach(function(c) {
        if (c.parameterTypes.length === 2) {
            packetTypeConstructor = c
        }
    });
    nmsChatMessageTypeClass = packetTypeConstructor.parameterTypes[1];
    if (nmsChatMessageTypeClass.isEnum()) {
        chatMessageTypes = nmsChatMessageTypeClass.getEnumConstants();
    } else {
        switch (nmsChatMessageTypeClass.name) {
            case "int":
                //@ts-ignore
                nmsChatMessageTypeClass = java.lang.Integer;
                break;
            case "byte":
                //@ts-ignore
                nmsChatMessageTypeClass = java.lang.Byte;
                break;
        }
    }
    var entityPlayerClass = nmsCls('EntityPlayer');
    var packetClass = nmsCls('Packet');
    var playerConnectionField = remapFieldName(entityPlayerClass, 'playerConnection', 'field_71135_a')
    playerConnectionFieldName = playerConnectionField.getName()
    sendPacketMethod = remapMethod(playerConnectionField.getType(), 'sendPacket', 'func_179290_a', packetClass)
}

function json(sender, json) {
    if (downgrade) {
        return '/tellraw ' + sender.name + ' ' + json
    } else {
        send(sender, json, 0);
        return false;
    }
}

function send(sender, json, type) {
    //@ts-ignore
    sendPacket(sender, packetTypeConstructor.newInstance(nmsChatSerializerMethod.invoke(null, json), chatMessageTypes == null ? nmsChatMessageTypeClass.valueOf(java.lang.String.valueOf(type)) : chatMessageTypes[type]))
}

function sendPacket(player, p) {
    sendPacketMethod.invoke(player.handle[playerConnectionFieldName], p)
}

try {
    init();
} catch (ex) {
    org.bukkit.Bukkit.getConsoleSender().sendMessage(`§6[§cMS§6][§bbukkit§6][§achat§6] §cNMS Inject Error §4${ex} §cDowngrade to Command Mode...`)
    downgrade = true;
}

let chat = {
    json
}

export default chat