using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;


using Newtonsoft.Json;


using ServerCore;
using ServerBase;


using META_ID = System.UInt32;
using USER_GUID = System.String;


namespace ServerCommon;

public abstract class SocialActionAttributeBase : EntityAttributeBase, ICopyEntityAttributeFromDoc, IMergeWithEntityAttribute
{
    [JsonProperty]
    public META_ID SocialActionMetaId { get; set; } = 0;

    [JsonProperty]
    public UInt16 EquipedPos { get; set; } = 0;


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

    public override void onClear()
    {
        SocialActionMetaId = 0;
        EquipedPos = 0;

        getAttributeState().reset();
    }

    public override async Task<(Result, DynamoDbDocBase?)> toDocBase(bool isForQuery = true)
    {
        var result = new Result();

        var owner = getOwner();

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

        USER_GUID user_guid = user_attribute.UserGuid;

        //=====================================================================================
        // Attribute => try pending Doc
        //=====================================================================================
        var try_pending_doc = getTryPendingDocBase() as SocialActionDoc;
        if (null == try_pending_doc)
        {
            var to_copy_doc = onCreateDocBase() as SocialActionDoc;
            NullReferenceCheckHelper.throwIfNull(to_copy_doc, () => $"to_copy_doc is null !!! - {owner.toBasicString()}");

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

            try_pending_doc = to_copy_doc;

            setTryPendingDocBase(try_pending_doc);
        }

        var social_action_attrib = try_pending_doc.getAttrib<SocialActionAttrib>();
        NullReferenceCheckHelper.throwIfNull(social_action_attrib, () => $"social_action_attrib is null !!! - {owner.toBasicString()}");

        social_action_attrib.SocialActionMetaId = SocialActionMetaId;
        social_action_attrib.EquipedPos = EquipedPos;

        if (false == isForQuery)
        {
            return (result, try_pending_doc);
        }

        //=====================================================================================
        // Doc QueryType 반영
        //=====================================================================================
        (result, var to_query_doc) = await applyDoc4Query(try_pending_doc);
        if (result.isFail())
        {
            return (result, null);
        }

        return (result, to_query_doc);
    }

    public bool copyEntityAttributeFromDoc(DynamoDbDocBase? docBase)
    {
        var err_msg = string.Empty;

        var to_cast_string = typeof(SocialActionDoc).Name;

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

        //=====================================================================================
        // New Doc => Origin Doc
        //=====================================================================================
        syncOriginDocBaseWithNewDoc<SocialActionAttributeBase>(social_action_doc);

        //=====================================================================================
        // Doc => Attribute
        //=====================================================================================
        var doc_attrib = social_action_doc.getAttrib<SocialActionAttrib>();
        ArgumentNullException.ThrowIfNull(doc_attrib);

        SocialActionMetaId = doc_attrib.SocialActionMetaId;
        EquipedPos = doc_attrib.EquipedPos;

        return true;
    }

    public Result onMerge(EntityAttributeBase otherEntityAttribute)
    {
        var owner = getOwner();
        NullReferenceCheckHelper.throwIfNull(owner, () => $"owner is null !!!");

        var result = new Result();
        var err_msg = string.Empty;

        if (null == otherEntityAttribute)
        {
            err_msg = $"Invalid Param !!!, otherEntityAttribute is null";
            result.setFail(ServerErrorCode.FunctionParamNull, err_msg);
            Log.getLogger().error(result.toBasicString());

            return result;
        }

        //=====================================================================================
        // OtherAttribute => Attribute
        //=====================================================================================
        var social_action_attribute = otherEntityAttribute as SocialActionAttributeBase;
        if (null == social_action_attribute)
        {
            err_msg = $"Failed to cast SocialActionAttribute !!!, social_action_attribute is null";
            result.setFail(ServerErrorCode.ClassTypeCastIsNull, err_msg);
            Log.getLogger().error(result.toBasicString());

            return result; 
        }

        SocialActionMetaId = social_action_attribute.SocialActionMetaId;
        EquipedPos = social_action_attribute.EquipedPos;

        //=====================================================================================
        // Attribute Try Pending Doc => Origin Doc
        //=====================================================================================
        var try_pending_doc = social_action_attribute.getTryPendingDocBase() as SocialActionDoc;
        if (null != try_pending_doc)
        {
            social_action_attribute.resetTryPendingDocBase();

            syncOriginDocBaseWithNewDoc<SocialActionAttributeBase>(try_pending_doc);
        }

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

        var social_action_attrib = origin_doc_base.getAttrib<SocialActionAttrib>();
        NullReferenceCheckHelper.throwIfNull(social_action_attrib, () => $"social_action_attrib is null !!! - {owner.toBasicString()}");

        social_action_attrib.SocialActionMetaId = SocialActionMetaId;
        social_action_attrib.EquipedPos = EquipedPos;

        return result;
    }
}

public class SocialActionAttributeBaseTransactor<TSocialActionAttributeBase> : EntityAttributeTransactorBase<TSocialActionAttributeBase>
    where TSocialActionAttributeBase : SocialActionAttributeBase
{
    public SocialActionAttributeBaseTransactor(EntityBase owner)
        : base(owner)
    {
    }
}