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


using ServerCore; using ServerBase;
using ServerCommon;


using META_ID = System.UInt32;


namespace GameServer
{
    public class ToolAction : EntityBase
    {
        public ToolAction(EntityBase parent)
            : base(EntityType.ToolAction, parent)
        {
        }

        public override async Task<Result> onInit()
        {
            var direct_parent = getDirectParent();
            NullReferenceCheckHelper.throwIfNull(direct_parent, () => $"direct_parent is null !!!");

            addEntityAttribute(new ToolActionAttribute(this, direct_parent));

            return await base.onInit();
        }

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

            var direct_parent = getDirectParent();
            NullReferenceCheckHelper.throwIfNull(direct_parent, () => $"direct_parent is null !!!");
            var root_parent = getRootParent();
            NullReferenceCheckHelper.throwIfNull(root_parent, () => $"root_parent is null !!!");

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

            var tool_action_attribute = getEntityAttribute<ToolActionAttribute>();
            NullReferenceCheckHelper.throwIfNull(tool_action_attribute, () => $"tool_action_attribute is null !!! - {root_parent.toBasicString()}");

            var item_tool_meta_id = tool_action_attribute.ItemMetaId;
            if (0 != tool_action_attribute.ItemMetaId)
            {
                if (false == MetaData.Instance._ToolMetaTable.TryGetValue((Int32)item_tool_meta_id, out var old_tool_data))
                {
                    err_msg = $"Not found Item Tool Meta !!! : itemToolMetaId:{item_tool_meta_id} - {root_parent.toBasicString()}";
                    result.setFail(ServerErrorCode.ItemToolMetaDataNotFound, err_msg);
                    Log.getLogger().error(result.toBasicString());

                    return result;
                }

                var old_buff_meta_id = old_tool_data.ActivateBuffID;
                if (old_buff_meta_id != 0)
                {
                    if (MetaData.Instance._BuffTable.TryGetValue(old_buff_meta_id, out var BuffData) == false)
                    {
                        err_msg = $"Not found Buff Meta !!! : BuffMetaId:{old_buff_meta_id} - {root_parent.toBasicString()}";
                        result.setFail(ServerErrorCode.NotFoundBuffTableId, err_msg);
                        Log.getLogger().error(result.toBasicString());

                        return result;
                    }

                    if (BuffData.DurationTime == 0)
                    {
                        var buff_action = root_parent.getEntityAction<BuffAction>();
                        NullReferenceCheckHelper.throwIfNull(buff_action, () => $"buff_action is null !!! - {root_parent.toBasicString()}");

                        (result, var buff_attribute) = buff_action.DelBuffProcess((META_ID)old_buff_meta_id);
                        if (result.isFail())
                        {
                            return result;
                        }

                        NullReferenceCheckHelper.throwIfNull(tool_action_attribute, () => $"tool_action_attribute is null !!! - {root_parent.toBasicString()}");
                    }
                }

                tool_action_attribute.deleteEntityAttribute();
            }

            return result;
        }

        public async Task<Result> tryAactivateToolAction(Item foundItemTool, Int16 itemToolSlotIndex)
        {
            await Task.CompletedTask;

            var root_parent = getRootParent() as Player;
            NullReferenceCheckHelper.throwIfNull(root_parent, () => $"root_parent is null !!!");
            ArgumentNullReferenceCheckHelper.throwIfNull(foundItemTool, () => $"foundItemTool is null !!! - {root_parent.toBasicString()}");

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

            var new_item_tool_meta = foundItemTool.getItemMeta();
            NullReferenceCheckHelper.throwIfNull(new_item_tool_meta, () => $"new_item_tool_meta is null !!! - {root_parent.toBasicString()}");

            var new_item_tool_meta_id = new_item_tool_meta.ItemId;
            if (false == MetaData.Instance._ToolMetaTable.TryGetValue(new_item_tool_meta_id, out var new_tool_data))
            {
                err_msg = $"Not found new Item Tool Meta !!! : itemToolMetaId:{new_item_tool_meta_id} - {root_parent.toBasicString()}";
                result.setFail(ServerErrorCode.ItemToolMetaDataNotFound, err_msg);
                Log.getLogger().error(result.toBasicString());

                return result;
            }

            var new_buff_meta_id = new_tool_data.ActivateBuffID;
            if (new_buff_meta_id == 0)
            {
                err_msg = $"ActivateBuffID 0 setup !!! : toolMetaId:{new_item_tool_meta_id} - {root_parent.toBasicString()}";
                Log.getLogger().warn(err_msg);
            }
            else
            {
                var buff_action = root_parent.getEntityAction<BuffAction>();
                NullReferenceCheckHelper.throwIfNull(buff_action, () => $"buff_action is null !!! - {root_parent.toBasicString()}");

                (result, var add_buff_attribute, var del_buff_attribute) = buff_action.AddBuffProcess((META_ID)new_buff_meta_id);
                if (result.isFail())
                {
                    return result;
                }

                BuffNotifyHelper.send_S2C_NTF_DELETE_BUFF(root_parent, del_buff_attribute);
                BuffNotifyHelper.send_S2C_NTF_START_BUFF(root_parent, add_buff_attribute);
            }

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

            var tool_action_attribute = getEntityAttribute<ToolActionAttribute>();
            NullReferenceCheckHelper.throwIfNull(tool_action_attribute, () => $"tool_action_attribute is null !!! - {root_parent.toBasicString()}");

            tool_action_attribute.ItemGuid = item_attribute.ItemGuid;
            tool_action_attribute.ItemMetaId = item_attribute.ItemMetaId;
            tool_action_attribute.Step = 0;
            tool_action_attribute.newEntityAttribute();

            return result;
        }

        public bool isActivateToolAction(string itemGuid)
        {
            var root_parent = getRootParent();
            NullReferenceCheckHelper.throwIfNull(root_parent, () => $"root_parent is null !!!");

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

            var tool_action_attribute = getEntityAttribute<ToolActionAttribute>();
            NullReferenceCheckHelper.throwIfNull(tool_action_attribute, () => $"tool_action_attribute is null !!! - {root_parent.toBasicString()}");

            if(tool_action_attribute.ItemGuid == itemGuid)
            {
                return true;
            }

            return false;
        }

        public override string toBasicString()
        {
            return $"{this.getTypeName()}, ItemGuid:{getOriginEntityAttribute<ToolActionAttribute>()?.ItemGuid}, ItemMetaId:{getOriginEntityAttribute<ToolActionAttribute>()?.ItemMetaId}";
        }

        public override string toSummaryString()
        {
            return $"{this.getTypeName()}, {getOriginEntityAttribute<ToolActionAttribute>()?.toSummaryString()}";
        }
    }
}