using ServerCommon;
using ServerCore; using ServerBase;
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace GameServer
{
    internal class ItemFirstPurchaseHistoryAgentAction : EntityActionBase
    {
        ConcurrentDictionary<int, ItemFirstPurchaseHistory> m_item_first_purchase_histories = new();

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

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

            var result = new Result();

            return result;
        }

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

        public List<ItemFirstPurchaseHistory> getItemFirstPurchaseHistories()
        {
            return m_item_first_purchase_histories.Select(x => x.Value).ToList();
        }

        public bool isItemFirstPurchase(int itemMetaId)
        {
            return !m_item_first_purchase_histories.ContainsKey(itemMetaId);
        }

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

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

            ItemFirstPurchaseHistory item_first_purchase_history = new(player);
            await item_first_purchase_history.onInit();

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

            if (!item_first_purchase_history_attribute.copyEntityAttributeFromDoc(itemFirstPurchaseHistoryDoc))
            {
                err_msg = $"Failed to copyEntityAttributeFromDoc() !!! to:{item_first_purchase_history_attribute.getTypeName()}, from:{itemFirstPurchaseHistoryDoc.getTypeName()} : {this.getTypeName()}";
                result.setFail(ServerErrorCode.DynamoDbDocCopyToEntityAttributeFailed, err_msg);
                Log.getLogger().error(result.toBasicString());

                return result;
            }

            if (!m_item_first_purchase_histories.TryAdd((int)item_first_purchase_history_attribute.ItemMetaId, item_first_purchase_history))
            {
                err_msg = $"Failed to TryAdd() !!! : {item_first_purchase_history.toBasicString()} : {this.getTypeName()}";
                result.setFail(ServerErrorCode.ItemFirstPurchaseHistoryDocLoadDuplicatedItem, err_msg);
                Log.getLogger().error(result.toBasicString());

                return result;
            }

            return result;
        }

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

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

            if (!MetaData.Instance._ItemTable.TryGetValue(itemMetaId, out var itemMetaData))
            {
                err_msg = $"Failed to TryGetValue() !!! : itemMetaId:{itemMetaId} : {this.getTypeName()}";
                result.setFail(ServerErrorCode.ItemMetaDataNotFound, err_msg);
                Log.getLogger().error(result.toBasicString());

                return result;
            }

            if (itemMetaData.Buy_Discount_Rate == 0)
                return result;

            ItemFirstPurchaseHistory item_first_purchase_history = new(player);
            await item_first_purchase_history.onInit();

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

            item_first_purchase_history_attribute.ItemMetaId = (uint)itemMetaId;
            item_first_purchase_history_attribute.FirstPurchaseTime = DateTime.UtcNow;
            item_first_purchase_history_attribute.newEntityAttribute();

            if (!m_item_first_purchase_histories.TryAdd((int)item_first_purchase_history_attribute.ItemMetaId, item_first_purchase_history))
            {
                err_msg = $"Failed to TryAdd() !!! : {item_first_purchase_history.toBasicString()} : {this.getTypeName()}";
                result.setFail(ServerErrorCode.ItemFirstPurchaseHistoryAlreadyExist, err_msg);
                Log.getLogger().error(result.toBasicString());

                return result;
            }

            return result;
        }
    }
}