discord4j.gateway.json.Opcode Maven / Gradle / Ivy

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/*
 * This file is part of Discord4J.
 *
 * Discord4J is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Discord4J is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Discord4J. If not, see .
 */
package discord4j.gateway.json;

import discord4j.gateway.json.dispatch.Dispatch;
import reactor.util.annotation.Nullable;

public final class Opcode {

    public static final Opcode DISPATCH = newOp(0, Dispatch.class);
    public static final Opcode HEARTBEAT = newOp(1, Heartbeat.class);
    public static final Opcode IDENTIFY = newOp(2, Identify.class);
    public static final Opcode STATUS_UPDATE = newOp(3, StatusUpdate.class);
    public static final Opcode VOICE_STATE_UPDATE = newOp(4, VoiceStateUpdate.class);
    public static final Opcode VOICE_SERVER_PING = newOp(5, null);
    public static final Opcode RESUME = newOp(6, Resume.class);
    public static final Opcode RECONNECT = newOp(7, null);
    public static final Opcode REQUEST_GUILD_MEMBERS = newOp(8, RequestGuildMembers.class);
    public static final Opcode INVALID_SESSION = newOp(9, InvalidSession.class);
    public static final Opcode HELLO = newOp(10, Hello.class);
    public static final Opcode HEARTBEAT_ACK = newOp(11, null);

    private final int rawOp;
    private final Class payloadType;

    private Opcode(int rawOp, @Nullable Class payloadType) {
        this.rawOp = rawOp;
        this.payloadType = payloadType;
    }

    @Nullable
    public static Opcode forRaw(int rawOp) {
        switch (rawOp) {
            case 0: return DISPATCH;
            case 1: return HEARTBEAT;
            case 2: return IDENTIFY;
            case 3: return STATUS_UPDATE;
            case 4: return VOICE_STATE_UPDATE;
            case 5: return VOICE_SERVER_PING;
            case 6: return RESUME;
            case 7: return RECONNECT;
            case 8: return REQUEST_GUILD_MEMBERS;
            case 9: return INVALID_SESSION;
            case 10: return HELLO;
            case 11: return HEARTBEAT_ACK;
            default: return null;
        }
    }

    private static  Opcode newOp(int rawOp, @Nullable Class payloadType) {
        return new Opcode<>(rawOp, payloadType);
    }

    public int getRawOp() {
        return rawOp;
    }

    @Nullable
    public Class getPayloadType() {
        return payloadType;
    }

    @Override
    public String toString() {
        return Integer.toString(getRawOp());
    }
}