TableHelper = TableHelper or {}

---@param obj table
---@return table
function TableHelper.DeepCopy(obj)
    if obj == nil then return {}; end

    local InTable = {};
    local function Func(obj)
        if type(obj) ~= "table" then   --判断表中是否有表
            return obj;
        end
        local NewTable = {};  --定义一个新表
        InTable[obj] = NewTable;  --若表中有表，则先把表给InTable，再用NewTable去接收内嵌的表
        for k,v in pairs(obj) do  --把旧表的key和Value赋给新表
            NewTable[Func(k)] = Func(v);
        end
        return setmetatable(NewTable, getmetatable(obj))--赋值元表
    end
    return Func(obj) --若表中有表，则把内嵌的表也复制了
end

---@param InSelf table
---@param InTable table
function TableHelper.CopyToTable(InSelf, InTable)
    if InSelf == nil or InTable == nil then return end

    for i, v in pairs(InTable) do
        if type(v) == 'table' then
            TableHelper.CopyToTable(InSelf[i], v);
        else
            InSelf[i] = v;
        end
    end
end

---@param Tab table
---@return table
function TableHelper.CopyTable(Tab)
    local NewTab = {}
    for k, v in pairs(Tab) do
        NewTab[k] = v
    end

    return NewTab
end

---@param TableData table
---@return table
function TableHelper.DeepCopyTable(TableData)
    if TableData == nil then
        UGCLogSystem.LogError("表格为空，不能复制");
        return {};
    end

    local TmpTab = {};
    for k, v in pairs(TableData) do
        if type(v) == "table" then
            local SubTab = TableHelper.DeepCopyTable(v);
            TmpTab[k] = SubTab;
        -- elseif type(v) == "userdata" then
        --     TmpTab[k] = v:Copy();
        else
            TmpTab[k] = v;
        end
    end

    return TmpTab;
end


--- 返回值的下标，没有返回-1
---@param tab table
---@param val any
---@return bool, int32
function TableHelper.GetValueIndex(tab, val)
    for k, v in pairs(tab) do
        if v == val then return true, k; end
    end

    return false, -1;
end

---@param tab table
---@param val any
function TableHelper.RemoveByValue(tab, val)
    for i, Val in pairs(tab) do
        if Val == val then
            table.remove(tab, i);
            break;
        end
    end
end


function TableHelper.Contains(tab, val)
    for i, Val in pairs(tab) do
        if Val == val then return true; end
    end
    return false;
end

function TableHelper.GetName(Actor)
    if UE.IsValid(Actor) then
        return UE.GetPathName(Actor);
    elseif Actor ~= nil then
        return type(Actor)
    end
    return "[NullActor]";
end


function TableHelper.Length(InTable)
    if InTable == nil then return 0; end

    local Count = 0
    for _ in pairs(InTable) do Count = Count + 1; end
    return Count;
end


function TableHelper.AppendToTable(OriginalTable, NewTable)
    if OriginalTable == nil or NewTable == nil then return; end
    for k, v in pairs(NewTable) do table.insert(OriginalTable, v); end
end


function TableHelper.ArrayToLuaTable(Array)
    local Tab = {};
    for k, v in pairs(Array) do Tab[k] = v; end
    
    return Tab;
end

function class(classname, super)
    local superType = type(super)
    local cls

    if superType ~= "function" and superType ~= "table" then
        superType = nil
        super = nil
    end

    if superType == "function" or (super and super.__ctype == 1) then
        -- inherited from native C++ Object
        cls = {}

        if superType == "table" then
            -- copy fields from super
            for k, v in pairs(super) do cls[k] = v end
            cls.__create = super.__create
            cls.super = super
        else
            cls.__create = super
            cls.Ctor = function()
            end
        end

        cls.__cname = classname
        cls.__ctype = 1

        function cls.New(...)
            local instance = cls.__create(...)
            -- copy fields from class to native object
            for k, v in pairs(cls) do instance[k] = v end
            instance.class = cls
            instance:Ctor(...)
            return instance
        end

    else
        -- inherited from Lua Object
        if super then
            cls = {}
            setmetatable(cls, { __index = super })
            cls.super = super
        else
            cls = {
                Ctor = function() end
            }
        end

        cls.__cname = classname
        cls.__ctype = 2 -- lua
        cls.__index = cls

        function cls.New(...)
            local instance = setmetatable({}, cls)
            instance.class = cls
            instance:Ctor(...)
            return instance
        end
    end

    return cls
end

return TableHelper;