Grasscutter/src/main/java/emu/grasscutter/server/packet/recv/HandlerSetPlayerBirthdayReq.java

package emu.grasscutter.server.packet.recv;

import emu.grasscutter.net.packet.Opcodes;
import emu.grasscutter.net.packet.PacketHandler;
import emu.grasscutter.net.packet.PacketOpcodes;
import emu.grasscutter.net.proto.SetPlayerBirthdayReqOuterClass.SetPlayerBirthdayReq;
import emu.grasscutter.net.proto.SocialDetailOuterClass.SocialDetail;
import emu.grasscutter.server.game.GameSession;
import emu.grasscutter.server.packet.send.PacketGetPlayerSocialDetailRsp;
import emu.grasscutter.server.packet.send.PacketSetPlayerBirthdayRsp;

@Opcodes(PacketOpcodes.SetPlayerBirthdayReq)
public class HandlerSetPlayerBirthdayReq extends PacketHandler {
	@Override
	public void handle(GameSession session, byte[] header, byte[] payload) throws Exception {
		SetPlayerBirthdayReq req = SetPlayerBirthdayReq.parseFrom(payload);

		// RET_BIRTHDAY_CANNOT_BE_SET_TWICE = 7009
		if (session.getPlayer().hasBirthday()) {
			session.send(new PacketSetPlayerBirthdayRsp(7009));
			return;
		}

		int month = req.getBirthday().getMonth();
		int day = req.getBirthday().getDay();

		// RET_BIRTHDAY_FORMAT_ERROR = 7022
		if (!isValidBirthday(month, day)) {
			session.send(new PacketSetPlayerBirthdayRsp(7022));
			return;
		}

		// Update birthday value
		session.getPlayer().setBirthday(day, month);

		// Save birthday month and day
		session.getPlayer().save();
		SocialDetail.Builder detail = session.getPlayer().getSocialDetail();

		session.send(new PacketSetPlayerBirthdayRsp(session.getPlayer()));
		session.send(new PacketGetPlayerSocialDetailRsp(detail));
	}

	private boolean isValidBirthday(int month, int day) {

		switch (month) {
			case 1:
			case 3:
			case 5:
			case 7:
			case 8:
			case 10:
			case 12:
				return day > 0 & day <= 31;
			case 4:
			case 6:
			case 9:
			case 11:
				return day > 0 && day <= 30;
			case 2:
				return day > 0 & day <= 29;
		}

		return false;
	}

}