using ServerCore;
using ServerBase;
using ServerCommon;


namespace GameServer;

public static class GameZoneMoveHelper
{
    public static async Task<Result> moveToAnotherChannel(Player player, ServerInfo destServer, Pos? pos)
    {
        var server_logic = GameServerApp.getServerLogic();
        var server_name = ServerBase.ServerHelper.makeGameServerName(ServerType.Channel, destServer.WorldId, destServer.Channel); 
        var WORLD_META_ID =  destServer.WorldId;
        
        // 1. otp 생성
        var (result, reserved_to_switch_server) = await ServerConnectionSwitchHelper.startServerSwitch(player, server_logic.getRedisConnector(), server_name);
        if (result.isFail() || null == reserved_to_switch_server) return result;

        var game_login_action = player.getEntityAction<GameLoginAction>();
        NullReferenceCheckHelper.throwIfNull(game_login_action, () => $"game login action is null !!! - {player.toBasicString()}");

        var login_cache = game_login_action.getLoginCacheRequest()?.getLoginCache();
        NullReferenceCheckHelper.throwIfNull(login_cache, () => $"login cache is null !!! - player:{player.toBasicString()}");
        login_cache.ReservedToSwitchServer = reserved_to_switch_server;

        // 2. 이동 정보 저장
        var account_attribute = player.getEntityAttribute<AccountAttribute>();
        NullReferenceCheckHelper.throwIfNull(account_attribute, () => $"account attribute is null !!! - {player.toBasicString()}");
        
        account_attribute.ToConnectGameServerAddress = destServer.toNetworkAddress();
        account_attribute.ToConnectGameServerName = server_name;
        account_attribute.OtpForServerConnect = reserved_to_switch_server.OneTimeKey;
        account_attribute.modifiedEntityAttribute();
        
        // 3. Buff 정보 수정
        var buff_action = player.getEntityAction<BuffAction>();
        NullReferenceCheckHelper.throwIfNull(buff_action, () => $"buff action is null !!! - {player.toBasicString()}");
        
        result = await buff_action.MoveServer(EPlaceType.World);
        if (result.isFail()) return result;
        
        // 4. 위치 수정
        var location_action = player.getEntityAction<LocationAction>();
        NullReferenceCheckHelper.throwIfNull(location_action, () => $"location action is null !!! - {player.toBasicString()}");

        if (pos == null)
        {
            pos = location_action.getCurrentPos();
        }

        result = await location_action.tryMoveToChannel(server_name, WORLD_META_ID, pos);
        if (result.isFail())
        {
            var err_msg = $"Failed to tryMoveToChannel() !!! : {result.toBasicString()}";
            Log.getLogger().error(err_msg);
        }

        return result;
    }
}