package message;

import org.json.*;

import server.Connection;
import java.util.HashMap;
import java.util.Map;

public abstract class RequestMessage {
    private static final Map<String, Class<? extends RequestMessage>> handlerMap =
            new HashMap<String, Class<? extends RequestMessage>>();

    static {
        handlerMap.put("hello", HelloRequestMessage.class);
        handlerMap.put("goodbye", GoodbyeRequestMessage.class);
        handlerMap.put("join", JoinRequestMessage.class);
        handlerMap.put("leave", LeaveRequestMessage.class);
        handlerMap.put("ban", BanRequestMessage.class);
        handlerMap.put("invite", InviteRequestMessage.class);
        handlerMap.put("kick", KickRequestMessage.class);
        handlerMap.put("promote", PromoteRequestMessage.class);
        handlerMap.put("undo", UndoRequestMessage.class);
        handlerMap.put("roomset", SetRoomSettingsRequestMessage.class);
        handlerMap.put("text", TextRequestMessage.class);
    }

    public static final RequestMessage getFromInput(Connection conn, String request)
            throws JSONException, ReflectiveOperationException {
        JSONObject jobj = new JSONObject(request);
        String type = jobj.getString("message");
        Class<? extends RequestMessage> constr = handlerMap.get(type);
        if(constr == null)
            return null;
        return constr.getDeclaredConstructor(RequestMessage.class).newInstance(conn, jobj);
    }

    public RequestMessage(Connection conn, JSONObject jobj) { };
    public abstract void process();
}