using Google.Protobuf;
using Google.Protobuf.WellKnownTypes;


using ServerCore;
using ServerBase;
using ServerCommon;
using ServerCommon.BusinessLogDomain;
using MetaAssets;


namespace GameServer;

internal partial class LocationAction : EntityActionBase
{
    LocationCacheRequest? m_location_cache_request_nullable;

    private BaseLoaction? m_current_loaction;

    public LocationAction(Player owner)
        : base(owner)
    { }

    public override async Task<Result> onInit()
    {
        await Task.CompletedTask;

        var result = new Result();
        return result;
    }

    public override void onClear()
    {
        return;
    }

    public async Task<Result> tryLoadEntityAttributeFromCache()
    {
        var result = new Result();
        var err_msg = string.Empty;

        var server_logic = GameServerApp.getServerLogic();

        var player = getOwner() as Player;
        NullReferenceCheckHelper.throwIfNull(player, () => "player is null !!!");

        var location_cache_request = new LocationCacheRequest(player, server_logic.getRedisConnector());
        result = await location_cache_request.fetchLocation();
        if (result.isFail())
        {
            err_msg = $"Failed to fetchLocation() !!! : {this.getTypeName()}";
            Log.getLogger().error(err_msg);

            return result;
        }

        var location_cache = location_cache_request.getLocationCache();
        NullReferenceCheckHelper.throwIfNull(location_cache, () => $"location_cache is null !!! - {player.toBasicString()}");

        var location_attribute = player.getEntityAttribute<LocationAttribute>();
        NullReferenceCheckHelper.throwIfNull(location_attribute, () => $"location_attribute is null !!! - {player.toBasicString()}");

        location_attribute.copyEntityAttributeFromCache(location_cache);

        m_location_cache_request_nullable = location_cache_request;

        return result;
    }

    public async Task<Result> trySaveLoactionToDB()
    {
        var result = new Result();
        var err_msg = string.Empty;

        var server_logic = GameServerApp.getServerLogic();

        var player = getOwner() as Player;
        NullReferenceCheckHelper.throwIfNull(player, () => "player is null !!!");

        var nickname_action = player.getEntityAction<NicknameAction>();
        NullReferenceCheckHelper.throwIfNull(nickname_action, () => $"nickname_action is null !!! - {player.toBasicString()}");

        if (!nickname_action.isCreatedNickname())
            return result;

        var location_attribute = player.getEntityAttribute<LocationAttribute>();
        NullReferenceCheckHelper.throwIfNull(location_attribute, () => $"location_attribute is null !!! - {player.toBasicString()}");

        var server_type = server_logic.getServerType().toServerType();
        switch (server_type)
        {
            case ServerType.Channel:
                {
                    var game_login_action = player.getEntityAction<GameLoginAction>();
                    NullReferenceCheckHelper.throwIfNull(game_login_action, () => $"game_login_action is null !!! - {player.toBasicString()}");

                    if (!game_login_action.isServerConnectSwitching())
                    {
                        location_attribute.LastestChannelServerLocation = location_attribute.CurrentChannelServerLoaction;
                        location_attribute.modifiedEntityAttribute();
                    }
                }
                break;

            case ServerType.Indun:
                break;

            default:
                {
                    err_msg = $"ServerType invalid !!! : {server_type.ToString()}";
                    result.setFail(ServerErrorCode.ServerTypeInvalid, err_msg);
                    Log.getLogger().error(result.toBasicString());

                    return result;
                }
        }

        (result, var location_doc) = await location_attribute.toDocBase();
        if (result.isFail() || null == location_doc)
        {
            return result;
        }

        var dynamo_db_client = server_logic.getDynamoDbClient();
        NullReferenceCheckHelper.throwIfNull(dynamo_db_client, () => $"dynamo_db_client is null !!! - {player.toBasicString()}");

        result = await dynamo_db_client.simpleUpsertDocumentWithDocType(location_doc);
        if (result.isFail())
        {
            err_msg = $"Failed to simpleUpsertDocumentWithDocType() !!! : {location_doc.toBasicString()} - {player.toBasicString()}";
            Log.getLogger().error(err_msg);
            return result;
        }

        return result;
    }

    public Result tryUpdateCurrentLocationAtLogin(bool isFirstLogin)
    {
        var result = new Result();
        var err_msg = string.Empty;

        var server_logic = GameServerApp.getServerLogic();

        var player = getOwner() as Player;
        NullReferenceCheckHelper.throwIfNull(player, () => "player is null !!!");

        var user_create_or_load_action = player.getEntityAction<UserCreateOrLoadAction>();
        NullReferenceCheckHelper.throwIfNull(user_create_or_load_action, () => $"user_create_or_load_action is null !!! - {player.toBasicString()}");

        var location_attribute = player.getEntityAttribute<LocationAttribute>();
        NullReferenceCheckHelper.throwIfNull(location_attribute, () => $"location_attribute is null !!! - {player.toBasicString()}");

        var server_type = server_logic.getServerType().toServerType();
        switch (server_type)
        {
            case ServerType.Channel:
                {
                    if(user_create_or_load_action.isTestUser() == true && isFirstLogin == true)
                    {
                        var lastest_pos = new Pos();
                        location_attribute.LastestChannelServerLocation.toPos(lastest_pos);

                        location_attribute.CurrentChannelServerLoaction.ServerName = server_logic.getServerName();
                        location_attribute.CurrentChannelServerLoaction.WorldMetaId = (int)server_logic.getWorldId();
                        location_attribute.CurrentChannelServerLoaction.fromPos(lastest_pos);
                        setCurrentLocation(location_attribute.CurrentChannelServerLoaction);
                        break;
                    }

                    if (false == user_create_or_load_action.hasUserCreateTrigger())
                    {
                        Pos? start_pos;
                        var lastest_pos = new Pos();
                        location_attribute.LastestChannelServerLocation.toPos(lastest_pos);
                        
                        if (isFirstLogin)
                        {
                            if (!server_logic.getMap().GetNearestStartPoint(lastest_pos, out start_pos))
                            {
                                start_pos = lastest_pos;
                            }
                        }
                        else
                        {
                            start_pos = lastest_pos;
                        }

                        location_attribute.CurrentChannelServerLoaction.ServerName = server_logic.getServerName();
                        location_attribute.CurrentChannelServerLoaction.WorldMetaId = (int)server_logic.getWorldId();
                        location_attribute.CurrentChannelServerLoaction.fromPos(start_pos);
                        setCurrentLocation(location_attribute.CurrentChannelServerLoaction);
                    }
                    else
                    {
                        if (!server_logic.getMap().getAccountStartPoint(out var start_pos))
                        {
                            err_msg = $"Failed to getAccountStartPoint : {this.getTypeName()}";
                            result.setFail(ServerErrorCode.InstanceMetaDataNotFound, err_msg);
                            Log.getLogger().error(result.toBasicString());

                            return result;
                        }

                        location_attribute.CurrentChannelServerLoaction.ServerName = server_logic.getServerName();
                        location_attribute.CurrentChannelServerLoaction.WorldMetaId = (int)server_logic.getWorldId();
                        location_attribute.CurrentChannelServerLoaction.fromPos(start_pos);
                        setCurrentLocation(location_attribute.CurrentChannelServerLoaction);
                    }
                }
                break;
            case ServerType.Indun:
                {
                    location_attribute.CurrentIndunLocation = location_attribute.EnterIndunLocation.clone();
                    setCurrentLocation(location_attribute.CurrentIndunLocation);
                }
                break;
            default:
                {
                    err_msg = $"ServerType invalid !!! : {server_type.ToString()}";
                    result.setFail(ServerErrorCode.ServerTypeInvalid, err_msg);
                    Log.getLogger().error(result.toBasicString());

                    return result;
                }
        }

        return result;
    }

    public void setCurrentLocation(BaseLoaction loaction) { m_current_loaction = loaction; }

    public BaseLoaction getCurrentLocation()
    {
        NullReferenceCheckHelper.throwIfNull(m_current_loaction, () => $"m_current_location is null !!! - {getOwner().toBasicString()}");

        return m_current_loaction;
    }
    

    public Pos getCurrentPos()
    {
        NullReferenceCheckHelper.throwIfNull(m_current_loaction, () => $"m_current_location is null !!! - {getOwner().toBasicString()}");

        Pos pos = new();
        m_current_loaction.toPos(pos);

        return pos;
    }

    public int getCurrentMapMId()
    {
        var mapMId = 0;
        var server_logic = GameServerApp.getServerLogic();

        if (server_logic.getServerType().toServerType() == ServerType.Channel)
        {
            var location = m_current_loaction as ChannelServerLocation;
            NullReferenceCheckHelper.throwIfNull(location, () => "ChannelServerLocation is null !!");

            mapMId = location.WorldMetaId;
        }
        else
        {
            var location = m_current_loaction as IndunLocation;
            NullReferenceCheckHelper.throwIfNull(location, () => "IndunLocation is null !!");

            mapMId = location.InstanceMetaId;
        }

        return mapMId;
    }

    public Result tryUpdateCurrentPos(Pos newPos)
    {
        var result = new Result();
        var err_msg = string.Empty;

        var server_logic = GameServerApp.getServerLogic();
        var server_type = server_logic.getServerType().toServerType();

        var player = getOwner() as Player;
        NullReferenceCheckHelper.throwIfNull(player, () => "player is null !!!");

        var location_attribute = player.getEntityAttribute<LocationAttribute>();
        NullReferenceCheckHelper.throwIfNull(location_attribute, () => $"location_attribute is null !!! - {player.toBasicString()}");

        switch(server_type)
        {
            case ServerType.Channel:
                {
                    location_attribute.CurrentChannelServerLoaction.fromPos(newPos);
                    location_attribute.modifiedEntityAttribute();
                }
                break;
            case ServerType.Indun:
                {
                    location_attribute.CurrentIndunLocation.fromPos(newPos);
                }
                break;
            default:
                {
                    err_msg = $"ServerType Invalid !!! - type:{server_type} - {player.toBasicString()}";
                    result.setFail(ServerErrorCode.ServerTypeInvalid, err_msg);
                    Log.getLogger().error(result.toBasicString());
                    return result;
                }
        }

        return result;
    }

    public Result tryModifyCurrentPos(Pos newPos)
    {
        var result = new Result();
        var err_msg = string.Empty;
        
        if (m_current_loaction == null)
        {
            err_msg = $"m_current_loaction is null : {this.getTypeName()}";
            result.setFail(ServerErrorCode.InstanceMetaDataNotFound, err_msg);
            Log.getLogger().error(result.toBasicString());

            return result;
        }

        m_current_loaction.fromPos(newPos);

        return result;
    }

    public async Task<Result> tryMoveToChannel(string? serverName = null, int? worldId = null, Pos? pos = null)
    {
        var result = new Result();
        var err_msg = string.Empty;

        var server_logic = GameServerApp.getServerLogic();

        var player = getOwner() as Player;
        NullReferenceCheckHelper.throwIfNull(player, () => "player is null !!!");

        var location_attribute = player.getEntityAttribute<LocationAttribute>();
        NullReferenceCheckHelper.throwIfNull(location_attribute, () => $"location_attribute is null !!! - {player.toBasicString()}");

        NullReferenceCheckHelper.throwIfNull(m_current_loaction, () => "Current Location is null !!");
        NullReferenceCheckHelper.throwIfNull(m_location_cache_request_nullable, () => "Current Location Cache is null !!");

        if (serverName != null)
        {
            location_attribute.LastestChannelServerLocation.ServerName = serverName;
        }

        if (worldId != null)
        {
            location_attribute.LastestChannelServerLocation.WorldMetaId = (int)worldId;
        }

        if (null != pos)
        {
            var location = new BaseLoaction();
            location.fromPos(pos);

            location_attribute.LastestChannelServerLocation.SpawnPos = location.SpawnPos;
            location_attribute.LastestChannelServerLocation.ForwardAngle = location.ForwardAngle;
        }

        location_attribute.ReJoinIndunLocation.clear();
        location_attribute.ReturnIndunLocations.Clear();
        location_attribute.EnterIndunLocation.clear();
        location_attribute.CurrentIndunLocation.clear();
        location_attribute.modifiedEntityAttribute();

        var location_cache = m_location_cache_request_nullable.getLocationCache();
        NullReferenceCheckHelper.throwIfNull(location_cache, () => $"location_cache is null !!! - {player.toBasicString()}");

        location_cache.copyCacheFromEntityAttribute(location_attribute);

        result = await m_location_cache_request_nullable.upsertLocation();
        if (result.isFail())
        {
            err_msg = $"Failed to upsertLocation() !!! : {this.getTypeName()}";
            Log.getLogger().error(err_msg);

            return result;
        }

        return result;
    }

    public async Task<Result> tryMoveToIndun(InstanceRoomInfo instanceRoomInfo, Pos? enterPos = null, bool isReturn = false)
    {
        var result = new Result();
        var err_msg = string.Empty;

        var player = getOwner() as Player;
        NullReferenceCheckHelper.throwIfNull(player, () => $"player is null !!!");

        var server_logic = GameServerApp.getServerLogic();
        
        var location_attribute = player.getEntityAttribute<LocationAttribute>();
        NullReferenceCheckHelper.throwIfNull(location_attribute, () => $"location_attribute is null !!! - {player.toBasicString()}");

        NullReferenceCheckHelper.throwIfNull(m_current_loaction, () => $"m_current_loaction is null !!! - {player.toBasicString()}");
        NullReferenceCheckHelper.throwIfNull(m_location_cache_request_nullable, () => "Current Location Cache is null !!");

        if (!MetaData.Instance._IndunTable.TryGetValue(instanceRoomInfo.InstanceId, out var indun_data))
        {
            err_msg = $"Failed to MetaData.TryGetValue() !!! : instanceMetaId:{instanceRoomInfo.InstanceId} - {player.toBasicString()}";
            result.setFail(ServerErrorCode.InstanceMetaDataNotFound, err_msg);
            Log.getLogger().error(result.toBasicString());

            return result;
        }

        if (server_logic.getServerType().toServerType() == ServerType.Channel)
        {
            location_attribute.LastestChannelServerLocation.ServerName = server_logic.getServerName();
            location_attribute.LastestChannelServerLocation.WorldMetaId = (int)server_logic.getWorldId();
            location_attribute.LastestChannelServerLocation.SpawnPos = m_current_loaction.SpawnPos;
            location_attribute.LastestChannelServerLocation.ForwardAngle = m_current_loaction.ForwardAngle;
            
            server_logic.getReturnManager().addReturnUser(player.getUserGuid());
        }
        else if (isReturn == false)
        {
            IndunLocation indun_location = new();

            indun_location.InstanceRoomId = location_attribute.CurrentIndunLocation.InstanceRoomId;
            indun_location.InstanceMetaId = location_attribute.CurrentIndunLocation.InstanceMetaId;
            indun_location.SpawnPos = m_current_loaction.SpawnPos;
            indun_location.ForwardAngle = m_current_loaction.ForwardAngle;

            location_attribute.ReturnIndunLocations.Add(indun_location);
            
            server_logic.getReturnManager().addReturnUser(player.getUserGuid());
        }

        if (enterPos != null)
        {
            enterPos.Z += 100;
        }

        location_attribute.EnterIndunLocation.InstanceRoomId = instanceRoomInfo.roomId;
        location_attribute.EnterIndunLocation.InstanceMetaId = instanceRoomInfo.InstanceId;
        location_attribute.EnterIndunLocation.fromPos(enterPos == null ? MapManager.Instance.GetStartPos(indun_data.RoomFile) : enterPos);
        location_attribute.modifiedEntityAttribute();

        var location_cache = m_location_cache_request_nullable.getLocationCache();
        NullReferenceCheckHelper.throwIfNull(location_cache, () => $"location_cache is null !!! - {player.toBasicString()}");

        location_cache.copyCacheFromEntityAttribute(location_attribute);

        result = await m_location_cache_request_nullable.upsertLocation();
        if (result.isFail())
        {
            err_msg = $"Failed to upsertLocation() !!! : {result.toBasicString()}";
            Log.getLogger().error(err_msg);

            return result;
        }

        return result;
    }

    public bool isInConcert()
    {
        var attribute = getOwner().getEntityAttribute<LocationAttribute>();
        NullReferenceCheckHelper.throwIfNull(attribute, () => $"location attribute is null !!! - {getOwner().toBasicString()}");

        if (!MetaData.Instance._IndunTable.TryGetValue(attribute.CurrentIndunLocation.InstanceMetaId, out var indun_data))
        {
            return false;
        }

        return indun_data.placeType() == EPlaceType.Concert;
    }
}