using System.Collections.Concurrent;


using Newtonsoft.Json;


using ServerCore;
using ServerBase;


using USER_GUID = System.String;


namespace ServerCommon;

public class SwitchingPropAttribute : EntityAttributeBase, ICopyEntityAttributeFromDoc, IMergeWithEntityAttribute
{
    [JsonProperty()] public ConcurrentDictionary<Int32, Int32> m_switching_props { get; set; } = new();

    public SwitchingPropAttribute(EntityBase owner)
        : base(owner)
    {
    }

    public override void onClear()
    {
        m_switching_props.Clear();
    }

    public override async Task<(Result, DynamoDbDocBase?)> toDocBase(bool isForQuery = true)
    {
        var player = getOwner();
        NullReferenceCheckHelper.throwIfNull(player, () => $"player is null !!!");


        var switching_prop_attribute = player.getEntityAttribute<SwitchingPropAttribute>();
        NullReferenceCheckHelper.throwIfNull(switching_prop_attribute, () => $"switching_prop_attribute is null !!! - {player.toBasicString()}");
        
        var user_attribute = player.getRootParent().getEntityAttribute<UserAttribute>();
        NullReferenceCheckHelper.throwIfNull(user_attribute, () => $"user_attribute is null !!! - {player.toBasicString()}");

        USER_GUID user_guid = user_attribute.UserGuid;
        
        //=====================================================================================
        // Attribute => try pending Doc
        //=====================================================================================
        var try_pending_doc = getTryPendingDocBase() as SwitchingPropDoc;
        if (null == try_pending_doc)
        {
            var to_copy_doc = new SwitchingPropDoc(user_guid);

            var origin_doc = getOriginDocBase<SwitchingPropAttribute>();
            if (null != origin_doc)
            {
                to_copy_doc.copyTimestampsFromOriginDocBase(origin_doc);
            }

            try_pending_doc = to_copy_doc;

            setTryPendingDocBase(try_pending_doc);
        }

        var to_copy_attrib = try_pending_doc.getAttrib<SwitchingPropAttrib>();
        NullReferenceCheckHelper.throwIfNull(to_copy_attrib, () => $"SwitchingPropAttrib is null !!! - {player.toBasicString()}");

        to_copy_attrib.m_switching_props.Clear();
        foreach (var prop in switching_prop_attribute.m_switching_props)
        {
            to_copy_attrib.m_switching_props.AddOrUpdate(prop.Key, prop.Value, (key, old) => prop.Value);
        }
        
        //=====================================================================================
        // Doc QueryType 반영
        //=====================================================================================
        (var result, var to_query_doc) = await applyDoc4Query(try_pending_doc);
        if (result.isFail())
        {
            return (result, null);
        }
        
        return (result, to_query_doc);
    }

    public override EntityAttributeBase onCloned()
    {
        var cloned = new SwitchingPropAttribute(getOwner());
        cloned.deepCopyFromBase(this);

        foreach (var prop in m_switching_props)
        {
            Int32 prop_id = prop.Key;
            Int32 prop_state = prop.Value;

            if (false == cloned.m_switching_props.TryAdd(prop_id, prop_state))
            {
                Log.getLogger().error($"SwitchingPropAttribute try add Fail!!! propid : {prop_id}, state : {prop_state}, player : {getOwner().toBasicString()}");
            }
        }

        return cloned;
    }

    

    public Result onMerge(EntityAttributeBase otherEntityAttribute)
    {
        var result = new Result();
        var err_msg = string.Empty;

        if (getAttributeState().hasFlag(StateType.Removed))
        {
            return result;
        }
        
        var player = getOwner();
        
        
        var other_attribute = otherEntityAttribute as SwitchingPropAttribute;
        if (null == other_attribute)
        {
            err_msg = $"Failed to cast SwitchingPropAttribute !!!, other_attribute is null";
            result.setFail(ServerErrorCode.ClassTypeCastIsNull, err_msg);
            Log.getLogger().error(result.toBasicString());

            return result;
        }
        
        
        //=====================================================================================
        // OtherAttribute => Attribute
        //=====================================================================================
        foreach (var prop in other_attribute.m_switching_props)
        {
            m_switching_props.TryAdd(prop.Key, prop.Value);
        }
        
        
        //=====================================================================================
        // Attribute Try Pending Doc => Origin Doc
        //=====================================================================================
        var try_pending_doc = other_attribute.getTryPendingDocBase() as SwitchingPropDoc;
        if (null != try_pending_doc)
        {
            other_attribute.resetTryPendingDocBase();

            syncOriginDocBaseWithNewDoc<SwitchingPropAttribute>(try_pending_doc);
        }

        var origin_doc_base = getOriginDocBase<SwitchingPropAttribute>();
        if (null == origin_doc_base)
        {
            // DB 에 저장되어 있지 않는 경우 OriginDoc은 null 이다 !!!
            return result;
        }

        var switching_prop_attrib = origin_doc_base.getAttrib<SwitchingPropAttrib>();
        NullReferenceCheckHelper.throwIfNull(switching_prop_attrib, () => $"switching_prop_attrib is null !!! - {player.toBasicString()}");

        switching_prop_attrib.m_switching_props.Clear();
        foreach (var prop in m_switching_props)
        {
            switching_prop_attrib.m_switching_props.AddOrUpdate(prop.Key, prop.Value, (key, old) => prop.Value);
        }

        return result;
    }
    
    
    public bool copyEntityAttributeFromDoc(DynamoDbDocBase customDoc)
    {
        var err_msg = string.Empty;

        var to_cast_string = typeof(SwitchingPropDoc).Name;

        var switching_prop_doc = customDoc as SwitchingPropDoc;
        if (null == switching_prop_doc)
        {
            err_msg = $"Failed to copyEntityAttributeFromDoc() !!!, switching_prop_doc is null :{to_cast_string}";
            Log.getLogger().error(err_msg);
            return false;
        }

        //=====================================================================================
        // New Doc => Origin Doc
        //=====================================================================================
        syncOriginDocBaseWithNewDoc<SwitchingPropAttribute>(switching_prop_doc);

        //=====================================================================================
        // Doc => Attribute
        //=====================================================================================
        var switching_prop_attrib = switching_prop_doc.getAttrib<SwitchingPropAttrib>();
        NullReferenceCheckHelper.throwIfNull(switching_prop_attrib, () => $"switching_prop_attrib is null !!!");

        foreach (var prop in switching_prop_attrib.m_switching_props)
        {
            m_switching_props.AddOrUpdate(prop.Key, prop.Value, (key, old) => prop.Value);
        }

        return true;
    }
    
    public override IEntityAttributeTransactor onNewEntityAttributeTransactor()
    {
        return new SwitchingPropTransactor(getOwner());
    }
}

public class SwitchingPropTransactor : EntityAttributeTransactorBase<SwitchingPropAttribute>
{
    public SwitchingPropTransactor(EntityBase owner)
        : base(owner)
    {
    }

    public bool copyEntityAttributeTransactorBaseFromEntityAttribute(EntityAttributeBase? entityAttributeBase)
    {
        return true;
    }
}