using System.Collections.Generic;
using System;


using Amazon.S3.Model;


using ServerCore; using ServerBase;
using ServerCommon;
using MetaAssets;


using static ClientToGameReq.Types;


using META_ID = System.UInt32;
using static System.Runtime.InteropServices.JavaScript.JSType;


namespace GameServer;


[ChatCommandAttribute("additembyrandom", typeof(ChatCommandAddItemByRandom), AuthAdminLevelType.Developer, AuthAdminLevelType.GmNormal, AuthAdminLevelType.GmSuper)]
internal class ChatCommandAddItemByRandom : ChatCommandBase
{
    public override async Task invoke(Player player, string token, string[] args)
    {
        Log.getLogger().info($"Call additembyrandom !!! - {player.toBasicString()}");

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

        if (args.Length < 1)
        {
            err_msg = $"Not enough argument !!! : argCount:{args.Length} == 2 - {player.toBasicString()}";
            Log.getLogger().error(err_msg);
            return;
        }

        if (int.TryParse(args[0], out int count) == false)
        {
            err_msg = $"Invalid argument !!! - {player.toBasicString()}";
            Log.getLogger().error(err_msg);
            return;
        }
        
        if(count > 1000)
        {
            err_msg = $"Invalid item random creation count limit over !!! : 1000 >= {count} - {player.toBasicString()}";
            Log.getLogger().error(err_msg);
            return;
        }

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

        var server_logic = GameServerApp.getServerLogic();

        var total_items = new Dictionary<META_ID, List<Item>>();

        var fn_item_add_by_random = async delegate ()
        {
            var result = new Result();
            var err_msg = string.Empty;

            var picked_item_metas = new List<ItemMetaData>();

            // 1. random 으로 n개의 ItemMetaData 정보를 얻는다.
            var item_meta_count_random = new Random();
            var random_picked_item_meta_datas = MetaData.Instance._ItemTable
                .OrderBy(x => item_meta_count_random.Next())
                .Take(count)
                .ToList();

            var batch_count = 100;
            var total_count = random_picked_item_meta_datas.Count;

            // 2. 추출된 ItemMetaData 정보를 참조하여 모든 아이템을 지급을 시도 한다.
            for (int i = 0; i < total_count; i += batch_count)
            {
                // 2.1. 현재 배치 처리할 범위 계산 및 지급할 ItemMetaData를 구성 한다.
                int current_batch_count = Math.Min(batch_count, total_count - i);
                var current_item_meta_datas = random_picked_item_meta_datas.GetRange(i, current_batch_count);

                err_msg = $"Start batch ItemMeta TakeIn !!! - at index {i} with {current_batch_count} items - {player.toBasicString()}";
                Log.getLogger().info(err_msg);

                // 2.2. 선택된 구간의 ItemMetaData의 아이텝 지급을 시도 한다.
                foreach (var each in current_item_meta_datas)
                {
                    var item_count_random = new Random();

                    var item_meta_id = each.Key;
                    var item_meta_data = each.Value;

                    int to_add_count = item_count_random.Next(1, item_meta_data.StackMaxCount);  // 1 이상 StackMaxCount이하의 숫자 -> 즉, 1부터 StackMaxCount까지

                    err_msg = $"Begin - tryTakalbleToBag() : ItemMetaId:{item_meta_id}, toAddCount:{to_add_count} - {player.toBasicString()}";
                    Log.getLogger().info(err_msg);

                    (result, var add_or_updated_items) = await inventory_action_base.tryTakalbleToBag((META_ID)item_meta_id, (ushort)to_add_count);
                    if (result.isFail())
                    {
                        err_msg = $"Failed to tryTakalbleToBag() !!! : {result.toBasicString()} - {player.toBasicString()}";
                        Log.getLogger().error(err_msg);
                        return result;
                    }

                    err_msg = $"End - tryTakalbleToBag() : ItemMetaId:{item_meta_id}, toAddCount:{to_add_count} - {player.toBasicString()}";
                    Log.getLogger().info(err_msg);
                    inventory_action_base.writeLog();

                    total_items[(META_ID)item_meta_id] = add_or_updated_items;
                }

                var batch = new QueryBatchEx<QueryRunnerWithDocument>( player, LogActionType.CheatCommandItem
                                                                   , server_logic.getDynamoDbClient());
                {
                    batch.addQuery(new DBQWriteToAttributeAllWithTransactionRunner());
                }

                result = await QueryHelper.sendQueryAndBusinessLog(batch);
                if (result.isFail())
                {
                    return result;
                }

                err_msg = $"End batch ItemMeta TakeIn !!! - at index {i} with {current_batch_count} items - {player.toBasicString()}";
                Log.getLogger().info(err_msg);
            }

            foreach (var each in total_items)
            {
                var item_meta_id = each.Key;
                var added_or_updated_items = each.Value;

                ClientToGame clientToGame = new();
                clientToGame.Response = new();
                clientToGame.Response.AddItemRes = new();

                if(false == MetaData.Instance._ItemTable.TryGetValue((int)item_meta_id, out var itemMetaData) || null == itemMetaData)
                {
                    continue;
                }
                
                (result, _, var bag_tab_type) = inventory_action_base.toBagTypeAndTabType(itemMetaData);
                clientToGame.Response.AddItemRes.Index = (int)bag_tab_type + 1;
                foreach (var item in added_or_updated_items)
                {
                    clientToGame.Response.AddItemRes.Item.Add(item.toItemData4Client());
                }

                player.sendPacket(clientToGame);
            }

            return result;
        };

        result = await player.runTransactionRunnerSafely(TransactionIdType.PrivateContents, "Cheat.ItemAddByRandom", fn_item_add_by_random);
        if (result.isFail())
        {
            err_msg = $"Failed to runTransactionRunnerSafely()!!! : {result.toBasicString()} - {player.toBasicString()}";
            Log.getLogger().error(err_msg);
        }

        inventory_action_base.writeLog();

        foreach (var each in total_items)
        {
            var item_meta_id = each.Key;

            await QuestManager.It.QuestCheck(player, new QuestItem(EQuestEventTargetType.ITEM, EQuestEventNameType.BOUGHT, (int)item_meta_id));
        }
    }
}

[ChatCommandAttribute("delitembyrandom", typeof(ChatCommandDelItemByRandom), AuthAdminLevelType.Developer, AuthAdminLevelType.GmNormal, AuthAdminLevelType.GmSuper)]
internal class ChatCommandDelItemByRandom : ChatCommandBase
{
    public override async Task invoke(Player player, string token, string[] args)
    {
        Log.getLogger().info($"Call delitembyrandom !!! - {player.toBasicString()}");

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

        if (args.Length < 1)
        {
            err_msg = $"Not enough argument !!! : argCount:{args.Length} == 2 - {player.toBasicString()}";
            Log.getLogger().error(err_msg);
            return;
        }

        if (int.TryParse(args[0], out int count) == false)
        {
            err_msg = $"Invalid argument !!! - {player.toBasicString()}";
            Log.getLogger().error(err_msg);
            return;
        }

        if (count > 1000)
        {
            err_msg = $"Invalid item random delete count limit over !!! : 1000 >= {count} - {player.toBasicString()}";
            Log.getLogger().error(err_msg);
            return;
        }

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

        var server_logic = GameServerApp.getServerLogic();

        var total_items = new Dictionary<META_ID, List<Item>>();

        var fn_item_delete_by_random = async delegate ()
        {
            var result = new Result();
            var err_msg = string.Empty;

            var picked_item_metas = new List<ItemMetaData>();

            // 1. random 으로 n개의 ItemMetaData 정보를 얻는다.
            var item_meta_count_random = new Random();
            var random_picked_item_meta_datas = MetaData.Instance._ItemTable
                .OrderBy(x => item_meta_count_random.Next())
                .Take(count)
                .ToList();

            var batch_count = 100;
            var total_count = random_picked_item_meta_datas.Count;

            // 2. 추출된 ItemMetaData 정보를 참조하여 모든 아이템을 삭제를 시도 한다.
            for (int i = 0; i < total_count; i += batch_count)
            {
                // 2.1. 현재 배치 처리할 범위 계산 및 지급할 ItemMetaData를 구성 한다.
                int current_batch_count = Math.Min(batch_count, total_count - i);
                var current_item_meta_datas = random_picked_item_meta_datas.GetRange(i, current_batch_count);

                err_msg = $"Start batch ItemMeta TakeOut !!! - at index {i} with {current_batch_count} items - {player.toBasicString()}";
                Log.getLogger().info(err_msg);

                // 2.2. 선택된 ItemMetaData의 아이텝 삭제를 시도 한다.
                foreach (var each in current_item_meta_datas)
                {
                    var item_count_random = new Random();

                    var item_meta_id = each.Key;
                    var item_meta_data = each.Value;

                    var has_count = inventory_action_base.getItemCountAllByMetaId((META_ID)item_meta_id);
                    var max_random = has_count > item_meta_data.StackMaxCount ? has_count : item_meta_data.StackMaxCount;
                    var to_delete_count = item_count_random.Next(1, max_random);  // 1 이상 max_random 이하의 숫자 -> 즉, 1부터 max_random까지

                    err_msg = $"Begin - tryDeleteItemByMetaId() : ItemMetaId:{item_meta_id}, toDeleteCount:{to_delete_count} - {player.toBasicString()}";
                    Log.getLogger().info(err_msg);

                    (result, var deleted_items) = await inventory_action_base.tryDeleteItemByMetaId((META_ID)item_meta_id, (ushort)to_delete_count);
                    if (result.isFail())
                    {
                        err_msg = $"Failed to tryDeleteItemByMetaId() !!! : {result.toBasicString()} - {player.toBasicString()}";
                        Log.getLogger().error(err_msg);
                        return result;
                    }

                    err_msg = $"End - tryDeleteItemByMetaId() : ItemMetaId:{item_meta_id}, toAddCount:{to_delete_count} - {player.toBasicString()}";
                    Log.getLogger().info(err_msg);
                    inventory_action_base.writeLog();

                    total_items[(META_ID)item_meta_id] = deleted_items;
                }

                var batch = new QueryBatchEx<QueryRunnerWithDocument>( player, LogActionType.CheatCommandItem
                                                                   , server_logic.getDynamoDbClient());
                {
                    batch.addQuery(new DBQWriteToAttributeAllWithTransactionRunner());
                }

                result = await QueryHelper.sendQueryAndBusinessLog(batch);
                if (result.isFail())
                {
                    return result;
                }

                err_msg = $"End batch ItemMeta TakeOut !!! - at index {i} with {current_batch_count} items - {player.toBasicString()}";
                Log.getLogger().info(err_msg);
            }

            foreach (var each in total_items)
            {
                var item_meta_id = each.Key;
                var deleted_items = each.Value;

                ClientToGame clientToGame = new();
                clientToGame.Response = new();
                clientToGame.Response.RemoveItemsRes = new();

                if (false == MetaData.Instance._ItemTable.TryGetValue((int)item_meta_id, out var itemMetaData) || null == itemMetaData) continue;
                
                (result, _, var bag_tab_type) = inventory_action_base.toBagTypeAndTabType(itemMetaData);
                clientToGame.Response.AddItemRes.Index = (int)bag_tab_type + 1;
                foreach (var item in deleted_items)
                {
                    clientToGame.Response.RemoveItemsRes.Item.Add(item.toItemData4Client());
                }

                player.sendPacket(clientToGame);
            }

            return result;
        };

        result = await player.runTransactionRunnerSafely(TransactionIdType.PrivateContents, "Cheat.ItemDeleteByRandom", fn_item_delete_by_random);
        if (result.isFail())
        {
            err_msg = $"Failed to runTransactionRunnerSafely()!!! : {result.toBasicString()} - {player.toBasicString()}";
            Log.getLogger().error(err_msg);
        }

        inventory_action_base.writeLog();
    }
}