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


using Google.Protobuf.WellKnownTypes;


using ServerCore; using ServerBase;


namespace ServerCommon;

public static class ClientMessageHelper
{
    public static global::Item toItemData4Client(this ItemBase item)
    {
        var parent = item.getRootParent();
        NullReferenceCheckHelper.throwIfNull(parent, () => $"parent is null !!!");

        var item_attribute = item.getEntityAttribute<ItemAttributeBase>();
        NullReferenceCheckHelper.throwIfNull(item_attribute, () => $"item_attribute is null !!! - {parent.toBasicString()}");

        return item_attribute.toItemData4Client();
    }

    public static global::Item toItemData4Client(this ItemAttributeBase itemAttributeBase)
    {
        var owner = itemAttributeBase.getOwner();
        NullReferenceCheckHelper.throwIfNull(owner, () => $"owner is null !!!");
        
        var parent = owner.getRootParent();
        NullReferenceCheckHelper.throwIfNull(parent, () => $"parent is null !!! - {owner.toBasicString()}");
        
        var item_4_client = new global::Item();

        item_4_client.ItemGuid = itemAttributeBase.ItemGuid;
        item_4_client.ItemId = (Int32)itemAttributeBase.ItemMetaId;
        item_4_client.Count = itemAttributeBase.ItemStackCount;
        item_4_client.Slot = itemAttributeBase.EquipedPos;
        item_4_client.Level = itemAttributeBase.Level;
        item_4_client.Attributeids.AddRange(itemAttributeBase.Attributes.Select<UInt16, Int32>(x => x).ToList());

        (var result, DynamoDbDocBase? doc_base) = itemAttributeBase.toDocBase(false).GetAwaiter().GetResult();
        if(result.isFail())
        {
            var err_msg = $"Failed to toDocBase() !!!, in toItemData4Client() : {result.toBasicString()} - {owner.toBasicString()}, {parent.toBasicString()}";
            Log.getLogger().error(err_msg);
            return item_4_client;
        }
        NullReferenceCheckHelper.throwIfNull(doc_base, () => $"doc_base is null !!! - {itemAttributeBase.toBasicString()}");

        item_4_client.CreateTime = doc_base.getCreatedDateTime().ProcessedTime.ToTimestamp();
        item_4_client.CreateTime = doc_base.getUpdatedDateTime().ProcessedTime.ToTimestamp();

        return item_4_client;
    }
}