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


using ServerCommon;


using SESSION_ID = System.Int32;
using WORLD_META_ID = System.UInt32;
using META_ID = System.UInt32;
using ENTITY_GUID = System.String;
using ACCOUNT_ID = System.String;
using OWNER_GUID = System.String;
using USER_GUID = System.String;
using CHARACTER_GUID = System.String;
using ITEM_GUID = System.String;
using ServerCore; using ServerBase;
using MetaAssets;
using Amazon.S3.Model;
using static ServerCommon.MetaHelper;


namespace GameServer
{
    public class ItemAction : EntityActionBase
    {
        public ItemAction(ItemBase owner)
            : base(owner) 
        {

        }

        public override async Task<Result> onInit()
        {
            var owner = getOwner();
            NullReferenceCheckHelper.throwIfNull(owner, () => $"owner is null !!!");
            var parent = owner.getRootParent();
            NullReferenceCheckHelper.throwIfNull(parent, () => $"parent is null !!! - {owner.toBasicString()}");

            var result = new Result();

            var alert_action = owner.getEntityAction<EntityAlertAction>();
            NullReferenceCheckHelper.throwIfNull(alert_action, () => $"alert_action is null !!! - {owner.toBasicString()}, {parent.toBasicString()}");

            alert_action.attachAlertFunction(EntityAlertTriggerType.ItemExpireWarningBefore, onAlertItemExpireWaringBefore);
            alert_action.attachAlertFunction(EntityAlertTriggerType.ItemExpire, onAlertItemExpire);

            return await Task.FromResult(result);
        }

        public override void onClear()
        {
            return;
        }

        public async Task<(Result, List<DynamoDbDocBase>, EntityAlertMethodType)> onAlertItemExpireWaringBefore(EntityAlertTriggerType triggerType)
        {
            var owner = getOwner() as Item;
            NullReferenceCheckHelper.throwIfNull(owner, () => $"owner is null !!!");
            var parent = owner.getRootParent();
            NullReferenceCheckHelper.throwIfNull(parent, () => $"parent is null !!! - {owner.toBasicString()}");

            var err_msg = string.Empty;
            var result = new Result();
            var doc_bases = new List<DynamoDbDocBase>();

            Player? player = null;
            if (parent is Player root_player)
            {
                player = root_player;
            }
            else if (parent is UgcNpc ugc_npc)
            {
                player = ugc_npc.onGetMasterEntity() as Player;
            }

            if (null == player)
            {
                err_msg = $"Failed to cast Player !!!, in ItemAction.onTick() - {owner.toBasicString()}, {parent.toBasicString()}";
                result.setFail(ServerErrorCode.ClassTypeCastIsNull, err_msg);
                Log.getLogger().error(result.toBasicString());
                return (result, doc_bases, EntityAlertMethodType.None);
            }

            var system_mail_key = "Item_Expiring_Soon";
            if (MetaData.Instance.SystemMailMetaData.TryGetValue(system_mail_key, out var systemMailMetaData) == false)
            {
                err_msg = $"Not found SystemMailMeta !!! : mailKey:{system_mail_key} - {owner.toBasicString()}, {parent.toBasicString()}";
                result.setFail(ServerErrorCode.SystemMailMetaDataNotFound, err_msg);
                Log.getLogger().error(err_msg);
                return (result, doc_bases, EntityAlertMethodType.None);
            }

            var item_meta = owner.getItemMeta();
            NullReferenceCheckHelper.throwIfNull(item_meta, () => $"item_meta is null !!! - {parent.toBasicString()}");

            var meta_id = (META_ID)item_meta.ItemId;
            var user_nickname = player.getUserNickname();

            var contents_arguments = new List<string>();
            contents_arguments.Add(item_meta.getStringKeyOfItemName());

            (result, var new_mail_doc) = await Mail.createSystemMailWithMeta( player.getUserGuid(), user_nickname, systemMailMetaData, contents_arguments
                                                                            , new List<ServerCommon.MailItem>(), GameConfigMeta.SystemMailStoragePeriod );
            if (result.isFail())
            {
                err_msg = $"Failed to createSystemMailWithMeta() !!! : {result.toBasicString()} - {owner.toBasicString()}, {parent.toBasicString()}";
                Log.getLogger().error(err_msg);
                return (result, doc_bases, EntityAlertMethodType.None);
            }
            NullReferenceCheckHelper.throwIfNull(new_mail_doc, () => $"new_mail_doc is null !!! - {player.toBasicString()}");

            doc_bases.Add(new_mail_doc);

            var item_attribute_base = owner.getEntityAttribute<ItemAttributeBase>();
            NullReferenceCheckHelper.throwIfNull(item_attribute_base, () => $"item_attribute_base is null !!! - {player.toBasicString()}");

            var alert_record_attribute = owner.getEntityAttribute<EntityAlertRecordAttribute>();
            NullReferenceCheckHelper.throwIfNull(alert_record_attribute, () => $"alert_record_attribute is null !!! - {player.toBasicString()}");

            alert_record_attribute.AlertKey = EntityAlertRecordDoc.makeALERT_KEY(triggerType, meta_id);
            alert_record_attribute.AlertedTime = DateTimeHelper.Current;
            alert_record_attribute.OwnerEntityType = owner.onGetOwnerEntityType();
            alert_record_attribute.OwnerGuid = item_attribute_base.ItemGuid;
            alert_record_attribute.EntityAlertTriggerType = triggerType;
            alert_record_attribute.MetaId = meta_id;
            alert_record_attribute.modifiedEntityAttribute(true);

            return (result, doc_bases, EntityAlertMethodType.Mail);
        }

        public async Task<(Result, List<DynamoDbDocBase>, EntityAlertMethodType)> onAlertItemExpire(EntityAlertTriggerType triggerType)
        {
            var owner = getOwner() as Item;
            NullReferenceCheckHelper.throwIfNull(owner, () => $"owner is null !!!");
            var parent = owner.getRootParent();
            NullReferenceCheckHelper.throwIfNull(parent, () => $"parent is null !!! - {owner.toBasicString()}");

            var err_msg = string.Empty;
            var result = new Result();
            var doc_bases = new List<DynamoDbDocBase>();

            Player? player = null;
            if (parent is Player root_player)
            {
                player = root_player;
            }
            else if (parent is UgcNpc ugc_npc)
            {
                player = ugc_npc.onGetMasterEntity() as Player;
            }

            if (null == player)
            {
                err_msg = $"Failed to cast Player !!!, in ItemAction.onTick() - {owner.toBasicString()}, {parent.toBasicString()}";
                result.setFail(ServerErrorCode.ClassTypeCastIsNull, err_msg);
                Log.getLogger().error(result.toBasicString());
                return (result, doc_bases, EntityAlertMethodType.None);
            }

            var system_mail_key = "Item_Expired_Deleted";
            if (MetaData.Instance.SystemMailMetaData.TryGetValue(system_mail_key, out var systemMailMetaData) == false)
            {
                err_msg = $"Not found SystemMailMeta !!! : mailKey:{system_mail_key} - {owner.toBasicString()}, {parent.toBasicString()}";
                result.setFail(ServerErrorCode.SystemMailMetaDataNotFound, err_msg);
                Log.getLogger().error(err_msg);
                return (result, doc_bases, EntityAlertMethodType.None);
            }

            var item_meta = owner.getItemMeta();
            NullReferenceCheckHelper.throwIfNull(item_meta, () => $"item_meta is null !!! - {parent.toBasicString()}");

            var meta_id = (META_ID)item_meta.ItemId;
            var user_nickname = player.getUserNickname();

            var contents_arguments = new List<string>();
            contents_arguments.Add(item_meta.getStringKeyOfItemName());

            (result, var new_mail_doc) = await Mail.createSystemMailWithMeta(player.getUserGuid(), user_nickname, systemMailMetaData, contents_arguments
                                                                            , new List<ServerCommon.MailItem>(), GameConfigMeta.SystemMailStoragePeriod);
            if (result.isFail())
            {
                err_msg = $"Failed to createSystemMailWithMeta() !!! : {result.toBasicString()} - {owner.toBasicString()}, {parent.toBasicString()}";
                Log.getLogger().error(err_msg);
                return (result, doc_bases, EntityAlertMethodType.None);
            }
            NullReferenceCheckHelper.throwIfNull(new_mail_doc, () => $"new_mail_doc is null !!! - {player.toBasicString()}");

            doc_bases.Add(new_mail_doc);

            var item_attribute_base = owner.getEntityAttribute<ItemAttributeBase>();
            NullReferenceCheckHelper.throwIfNull(item_attribute_base, () => $"item_attribute_base is null !!! - {player.toBasicString()}");

            var alert_record_attribute = owner.getEntityAttribute<EntityAlertRecordAttribute>();
            NullReferenceCheckHelper.throwIfNull(alert_record_attribute, () => $"alert_record_attribute is null !!! - {player.toBasicString()}");

            alert_record_attribute.AlertKey = EntityAlertRecordDoc.makeALERT_KEY(triggerType, meta_id);
            alert_record_attribute.AlertedTime = DateTimeHelper.Current;
            alert_record_attribute.OwnerEntityType = owner.onGetOwnerEntityType();
            alert_record_attribute.OwnerGuid = item_attribute_base.ItemGuid;
            alert_record_attribute.EntityAlertTriggerType = triggerType;
            alert_record_attribute.MetaId = meta_id;
            alert_record_attribute.modifiedEntityAttribute(true);

            return (result, doc_bases, EntityAlertMethodType.Mail);
        }

        public async Task<(Result, bool, List<Item>?)> tryLevelUpByTattoo()
        {
            var result = new Result();
            var err_msg = string.Empty;

            var owner = getOwner() as Item;
            ArgumentNullException.ThrowIfNull(owner);

            var parent = owner.getRootParent();
            ArgumentNullException.ThrowIfNull(parent);

            var inventory_action = parent.getEntityAction<InventoryActionBase>();
            ArgumentNullException.ThrowIfNull(inventory_action);

            inventory_action.getEquipInvens().TryGetValue(InvenEquipType.Tattoo, out var found_equip_inven);
            var tattoo_inven = found_equip_inven as TattooEquipInven;
            ArgumentNullException.ThrowIfNull(tattoo_inven);

            var tattoo_inven_data = tattoo_inven.getData();
            ArgumentNullException.ThrowIfNull(tattoo_inven_data);

            var item_attribute = owner.getEntityAttribute<ItemAttributeBase>();
            ArgumentNullException.ThrowIfNull(item_attribute);

            bool is_equiped_tatoo_slot = false;
            var tattoo_slot_type = (TattooSlotType)item_attribute.EquipedPos;
            var found_using_tattoo_slot = tattoo_inven_data.findEntityBaseInSlotType(tattoo_slot_type) as Item;
            if (null != found_using_tattoo_slot)
            {
                is_equiped_tatoo_slot = true;
            }

            var item_meta = owner.getItemMeta();
            ArgumentNullException.ThrowIfNull(item_meta);

            var curr_level = item_attribute.Level;
            var next_level = item_attribute.Level + 1;

            // 다음 레벨에 해당하는 메타 데이터를 참조 한다.
            if (false == MetaData.Instance._ItemLevelEnchantMetaTable.TryGetValue(next_level, out var found_new_item_level_enchant_meta))
            {
                err_msg = $"Not found new ItemLevelEchantMeta !!!, current level is Max : newLevel:{next_level}, currLevel:{curr_level} - {owner.toBasicString()}, {parent.toBasicString()}";
                result.setFail(ServerErrorCode.ItemLevelCurrentMax, err_msg);

                return (result, false, null);
            }

            var found_new_enchant = found_new_item_level_enchant_meta?.GetConsumeItem(item_meta.Rarity);
            if (found_new_enchant == null)
            {
                err_msg = $"Not found next Enchant Data !!! : itemRarity:{item_meta.Rarity} - {owner.toBasicString()}, {parent.toBasicString()}";
                result.setFail(ServerErrorCode.ItemEnchantNotFoundInMeta, err_msg);

                return (result, false, null);
            }

            (result, var deleted_items) = await inventory_action.tryDeleteItemByMetaId((META_ID)found_new_enchant.ConsumeItemID, (UInt16)found_new_enchant.ConsumeItemCount);
            if(result.isFail())
            {
                return (result, false, null);
            }

            var is_success_enchant = false;

            if (found_new_enchant.Probability >= RandomHelper.next(0, 10000) == true)
            {
                if(true == is_equiped_tatoo_slot)
                {
                    var ability_action = parent.getEntityAction<AbilityAction>();
                    ArgumentNullException.ThrowIfNull(ability_action);

                    result = await ability_action.setAbilities(owner, (Int16)next_level, false);
                    if (result.isFail())
                    {
                        return (result, false, null);
                    }

                    await ability_action.setAbilities(owner, (Int16)(item_attribute.Level), true);
                }

                is_success_enchant = true;
                item_attribute.Level = (UInt16)next_level;
                item_attribute.modifiedEntityAttribute();
            }

            var updated_items = new List<Item>();
            updated_items.AddRange(deleted_items);
            updated_items.Add(owner);

            return (result, is_success_enchant, updated_items);
        }

       public async Task<(Result, List<Item>?)> tryChangeAttributeByTattoo(Int16 targetSlotIndex)
        {
            var result = new Result();
            var err_msg = string.Empty;

            var owner = getOwner() as Item;
            ArgumentNullException.ThrowIfNull(owner);

            var parent = owner.getRootParent();
            ArgumentNullException.ThrowIfNull(parent);

            var inventory_action = parent.getEntityAction<InventoryActionBase>();
            ArgumentNullException.ThrowIfNull(inventory_action);

            inventory_action.getEquipInvens().TryGetValue(InvenEquipType.Tattoo, out var found_equip_inven);
            var tattoo_inven = found_equip_inven as TattooEquipInven;
            ArgumentNullException.ThrowIfNull(tattoo_inven);

            var tattoo_inven_data = tattoo_inven.getData();
            ArgumentNullException.ThrowIfNull(tattoo_inven_data);

            var item_attribute = owner.getEntityAttribute<ItemAttributeBase>();
            ArgumentNullException.ThrowIfNull(item_attribute);

            bool is_equiped_tatoo_slot = false;
            var tattoo_slot_type = (TattooSlotType)item_attribute.EquipedPos;
            var found_using_tattoo_slot = tattoo_inven_data.findEntityBaseInSlotType(tattoo_slot_type) as Item;
            if (null != found_using_tattoo_slot)
            {
                is_equiped_tatoo_slot = true;
            }

            var item_meta = owner.getItemMeta();
            ArgumentNullException.ThrowIfNull(item_meta, $"item_meta is null !!! - {parent.toBasicString()}");

            if (false == MetaData.Instance.Meta.AttributeEnchantMetaTable.AttributeEnchantMetaDataListbyRarity.TryGetValue(item_meta.Rarity, out var found_attribute_enchant_meta))
            {
                err_msg = $"Not found AttributeEnchantMeta !!! : itemRarity:{item_meta.Rarity} - {owner.toBasicString()}, {parent.toBasicString()}";
                result.setFail(ServerErrorCode.ItemAttributeEnchantMetaNotFound, err_msg);

                return (result, null);
            }

            if (false == MetaData.Instance._ItemLevelEnchantMetaTable.TryGetValue(item_attribute.Level, out var found_item_level_enchant_meta))
            {
                err_msg = $"Not found new ItemLevelEchantMeta !!! : newLevel:{item_attribute.Level} - {owner.toBasicString()}, {parent.toBasicString()}";
                result.setFail(ServerErrorCode.ItemLevelEnchantNotFoundInMeta, err_msg);

                return (result, null);
            }

            var found_enchant = found_item_level_enchant_meta.GetConsumeItem(item_meta.Rarity);
            if (found_enchant == null)
            {
                err_msg = $"Not found new Enchant Data !!! : itemRarity:{item_meta.Rarity} - {owner.toBasicString()}, {parent.toBasicString()}";
                result.setFail(ServerErrorCode.ItemEnchantNotFoundInMeta, err_msg);

                return (result, null);
            }

            (result, var deleted_items) = await inventory_action.tryDeleteItemByMetaId((META_ID)found_attribute_enchant_meta.ItemID, (UInt16)found_attribute_enchant_meta.ItemCount);
            if(result.isFail())
            {
                return (result, null);
            }

            if(0 == targetSlotIndex)
            {
                result = owner.fillupMakeAttributeIds(item_meta, out var selected_attribute_ids);
                if(result.isFail())
                {
                    return (result, null);
                }

                if(true == is_equiped_tatoo_slot)
                {
                    var ability_action = parent.getEntityAction<AbilityAction>();
                    ArgumentNullException.ThrowIfNull(ability_action);

                    result = await ability_action.setAbilities(owner, (Int16)item_attribute.Level, true);
                    if(result.isFail())
                    {
                        return (result, null);
                    }

                    item_attribute.Attributes = selected_attribute_ids;
                    result = await ability_action.setAbilities(owner, (Int16)item_attribute.Level, false);
                    if (result.isFail())
                    {
                        return (result, null);
                    }
                }
                else
                {
                    item_attribute.Attributes = selected_attribute_ids;
                }
            }
            else
            {
                (result, var change_attribute_id) = await owner.fillupChangeAttributeIds();
                if (result.isFail())
                {
                    return (result, null);
                }

                if (true == is_equiped_tatoo_slot)
                {
                    var ability_action = parent.getEntityAction<AbilityAction>();
                    ArgumentNullException.ThrowIfNull(ability_action);

                    var attriubte_id = item_attribute.Attributes[targetSlotIndex];
                    result = await ability_action.changeAbilities( owner
                                                                 , new Dictionary<int, int>() { { targetSlotIndex, attriubte_id } }
                                                                 , true );
                    if(result.isFail())
                    {
                        return (result, null);
                    }

                    item_attribute.Attributes[targetSlotIndex] = (UInt16)change_attribute_id;
                    result = await ability_action.changeAbilities( owner
                                                                 , new Dictionary<int, int>() { { targetSlotIndex, change_attribute_id } }
                                                                 , false );
                    if(result.isFail())
                    {
                        return (result, null);
                    }
                }
                else
                {
                    item_attribute.Attributes[targetSlotIndex] = (UInt16)change_attribute_id;
                }
            }

            item_attribute.modifiedEntityAttribute();

            var updated_items = new List<Item>();
            updated_items.AddRange(deleted_items);
            updated_items.Add(owner);

            return (result, updated_items);
        }

        public async Task<bool> isExpiredItem()
        {
            var owner = getOwner() as Item;
            ArgumentNullException.ThrowIfNull(owner);

            var parent = owner.getRootParent();
            ArgumentNullException.ThrowIfNull(parent);

            var item_meta = owner.getItemMeta();
            NullReferenceCheckHelper.throwIfNull(item_meta, () => $"item_meta is null !!! - {parent.toBasicString()}");

            if(   EExpireType.DELAY != item_meta.ExpireType
               || 0 >= item_meta.ExpireTimeSec )
            {
                return false;
            }

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

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

            var created_time = doc_base.getCreatedDateTime().ProcessedTime;
            if (false == created_time.isValidTime())
            {
                var err_msg = $"Failed to isValidTime() !!!, in isExpiredItem() : {result.toBasicString()} - {owner.toBasicString()}, {parent.toBasicString()}";
                Log.getLogger().error(err_msg);
                return false;
            }

            var to_expire_date_time = created_time.AddSeconds(item_meta.ExpireTimeSec);

            if(false == DateTimeHelper.hasTimeReached(to_expire_date_time))
            {
                await onAlertItemExpireBeforeHourTime(created_time, to_expire_date_time);

                return false;
            }

            return true;
        }

        public async Task onAlertItemExpireBeforeHourTime(DateTime createdTime, DateTime toExpireTime)
        {
            var owner = getOwner() as Item;
            NullReferenceCheckHelper.throwIfNull(owner, () => $"owner is null !!! - {toBasicString()}");
            var parent = owner.getRootParent();
            NullReferenceCheckHelper.throwIfNull(parent, () => $"parent is null !!! - {owner.toBasicString()}");

            var past_time = MetaHelper.GameConfigMeta.ItemExpireAlertBeforeHourTime * -1;
            var alert_time = toExpireTime.AddHours(past_time);

            if (false == DateTimeHelper.hasTimeReached(alert_time))
            {
                return;
            }

            var entity_alert_auction = owner.getEntityAction<EntityAlertAction>();
            NullReferenceCheckHelper.throwIfNull(entity_alert_auction, () => $"entity_alert_auction is null !!! - {owner.toBasicString()}, {parent.toBasicString()}");

            await entity_alert_auction.onAlert(EntityAlertTriggerType.ItemExpireWarningBefore);
        }

        public override async Task onTick()
        {
            await Task.CompletedTask;

            var owner = getOwner() as Item;
            NullReferenceCheckHelper.throwIfNull(owner, () => $"owner is null !!! - {toBasicString()}");

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

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

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

            Player? player = null;
            if (parent is Player root_player)
            {
                player = root_player;
            }
            else if (parent is UgcNpc ugc_npc)
            {
                player = ugc_npc.onGetMasterEntity() as Player;
            }

            if (null == player)
            {
                err_msg = $"Failed to cast Player !!!, in ItemAction.onTick() - {owner.toBasicString()}, {parent.toBasicString()}";
                result.setFail(ServerErrorCode.ClassTypeCastIsNull, err_msg);
                Log.getLogger().error(result.toBasicString());
                return;
            }

            var target_item_guid = item_attribute_base.ItemGuid;
            var item_stack_count = item_attribute_base.ItemStackCount;

            if (true == await isExpiredItem())
            {
                var entity_alert_auction = owner.getEntityAction<EntityAlertAction>();
                NullReferenceCheckHelper.throwIfNull(entity_alert_auction, () => $"entity_alert_auction is null !!! - {owner.toBasicString()}, {parent.toBasicString()}");

                await entity_alert_auction.onAlert(EntityAlertTriggerType.ItemExpire);

                (result, _) = await PacketHandler.ItemDeletePacketHandler.tryDeleteItemWithTransactionRunner( player
                                                                                                            , target_item_guid
                                                                                                            , item_stack_count
                                                                                                            , LogActionType.ItemDestoryByExpiration );
                if (result.isFail())
                {
                    err_msg = $"Failed to tryDeleteItemWithTransactionRunner() !!!, in onTick() : {result.toBasicString()} - {owner.toBasicString()}, {parent.toBasicString()}";
                    Log.getLogger().error(err_msg);
                    return;
                }

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

                ItemNotifyHelper.send_S2C_NTF_ITEM_DELETE(player, target_item_guid, item_stack_count);
            }
        }
    }
}