UGCSystemLibrary = UGCSystemLibrary or {}

UGCSystemLibrary.IsServer = nil
-- 缓存的资产
UGCSystemLibrary.CacheAsset = {}




------------------------------------------------ 获取本地信息 ------------------------------------------------

function UGCSystemLibrary.GetLocalPlayerController()
    if not UE.IsValid(UGCSystemLibrary.LocalController) and UGCGameSystem.GameState then
        UGCSystemLibrary.LocalController = STExtraGameplayStatics.GetFirstPlayerController(UGCGameSystem.GameState)
    end
    return UGCSystemLibrary.LocalController
end

function UGCSystemLibrary.GetLocalPlayerKey() return UGCSystemLibrary.GetLocalPlayerController().PlayerKey end

function UGCSystemLibrary.GetLocalPlayerPawn() return UGCGameSystem.GetPlayerPawnByPlayerKey(UGCSystemLibrary.GetLocalPlayerKey()) end

function UGCSystemLibrary.GetGameTime()
    if UGCGameSystem.GameState then
        return KismetSystemLibrary.GetGameTimeInSeconds(UGCGameSystem.GameState)
    else
        return 0.
    end
end

---------------------------------------------- 获取本地信息 End ----------------------------------------------


--- 通过资产路径去获取场景唯一实例
---@param AssetPath string
function UGCSystemLibrary.GetUniqueInstanceFromPath(AssetPath)
    local ObjClass = UE.LoadClass(AssetPath)
    if UE.IsValid(ObjClass) then
        local AllActor = ScriptGameplayStatics.GetActorsOfClass(UGCGameSystem.GameState, ObjClass)
        for i, v in pairs(AllActor) do return v end
    end
    return nil
end



local RootPackagePath = UGCMapInfoLib.GetRootLongPackagePath()

function UGCSystemLibrary.GetFullPath(InPath)
    if type(InPath) ~= "string" then return "" end

    if #RootPackagePath > #InPath or string.sub(InPath, 1, #RootPackagePath) ~= RootPackagePath then
        InPath = RootPackagePath..InPath
    end

    return InPath
end


------------------------------------------ Load ------------------------------------------
--- {URL = Asset}
UGCSystemLibrary.DownloadImageAsset = {}
--- 下载图像
function UGCSystemLibrary.DownloadImage(URL, bSaveAsset, CallBackFunc, Obj)
    if UE.IsValid(UGCSystemLibrary.DownloadImageAsset[URL]) then
        if Obj then
            CallBackFunc(Obj, UGCSystemLibrary.DownloadImageAsset[URL])
        else
            CallBackFunc(UGCSystemLibrary.DownloadImageAsset[URL])
        end
    else

        local ResHandle = AsyncTaskDownloadImage.DownloadImage(URL)
        --ResHandle.OnSuccess:Add(CallBackFunc, Obj)
        --ResHandle.OnFail:Add(CallBackFunc, Obj)
        ResHandle.OnSuccess:Add(CallBackFunc)
        ResHandle.OnFail:Add(CallBackFunc)
        if bSaveAsset then
            ResHandle.OnSuccess:Add(
                function(Texture)
                    UGCSystemLibrary.DownloadImageAsset[URL] = Texture
                end
            )
        end
    end
end


--- 下载图像至UImage
---@param Image UImage*
---@param URL string
function UGCSystemLibrary.DownloadImageToUImage(Image, URL)
    UGCSystemLibrary.DownloadImage(URL, true,
        function(Texture)
            if UE.IsValid(Texture) then
                Image:SetBrushFromTextureDynamic(Texture)
            else
                UGCLogSystem.LogError("[UGCSystemLibrary_DownloadImageToUImage] Download Texture Failure. URL: %s", URL)
            end
        end
    )
end

---------------------------------------- Load End ----------------------------------------


function UGCSystemLibrary.BindBeginOverlapFunc(CollisionComponent, Func, Obj) CollisionComponent.OnComponentBeginOverlap:Add(Func, Obj) end

function UGCSystemLibrary.BindEndOverlapFunc(CollisionComponent, Func, Obj) CollisionComponent.OnComponentEndOverlap:Add(Func, Obj) end


function UGCSystemLibrary.formatTime(seconds, ShowMinutes, ShowHours, ShowRemainingSeconds)
    if ShowMinutes == nil then ShowMinutes = false end
    if ShowHours == nil then ShowHours = false end
    if ShowRemainingSeconds == nil then ShowRemainingSeconds = false end
    local hours = math.floor(seconds / 3600)
    local minutes = math.floor((seconds - hours * 3600) / 60)
    local remainingSeconds = seconds - hours * 3600 - minutes * 60
    local ResTime = ""
    ResTime = ResTime .. ((hours > 0 or ShowHours) and string.format("%02d:", hours) or "")
    ResTime = ResTime .. ((minutes > 0 or hours > 0 or ShowHours or ShowMinutes) and string.format("%02d:", minutes) or "")
    ResTime = ResTime .. (ShowRemainingSeconds and string.format("%02.3f", remainingSeconds) or string.format("%02.0f", remainingSeconds))
    return ResTime
end

---@param AssetPath:string
---@param CallBackFunc:fun(LoadObject:UObject,resID:int32)
---@param Obj:table CallBackFunc拥有者
---@param SaveAsset:bool 是否保存
function UGCSystemLibrary.AsyncLoadAsset(AssetPath, CallBackFunc, Obj, SaveAsset)
    if not UE.IsValid(UGCSystemLibrary.CacheAsset[AssetPath]) then
        local softObjPath = KismetSystemLibrary.MakeSoftObjectPath(AssetPath);
        STExtraBlueprintFunctionLibrary.GetAssetByAssetReferenceAsync(softObjPath,
                ObjectExtend.CreateDelegate(UGCGameSystem.GameState, function(LoadObject, resID)
                    if CallBackFunc then
                        if Obj ~= nil then CallBackFunc(Obj, LoadObject) else CallBackFunc(LoadObject) end
                    end
                    if UE.IsValid(LoadObject) and SaveAsset then UGCSystemLibrary.CacheAsset[AssetPath] = LoadObject end
                end), true);
    else
        if CallBackFunc then
            if Obj ~= nil then CallBackFunc(Obj, UGCSystemLibrary.CacheAsset[AssetPath]) else CallBackFunc(UGCSystemLibrary.CacheAsset[AssetPath]) end
        end
    end
end

---@param AssetPath:string
---@param SaveAsset:bool 是否保存
function UGCSystemLibrary.LoadAsset(AssetPath, SaveAsset)
    if SaveAsset == nil then SaveAsset = true end
    if not UE.IsValid(UGCSystemLibrary.CacheAsset[AssetPath]) then
        local TargetAsset = UE.LoadObject(AssetPath)
        if SaveAsset and UE.IsValid(TargetAsset) then UGCSystemLibrary.CacheAsset[AssetPath] = TargetAsset end
        return TargetAsset
    else
        return UGCSystemLibrary.CacheAsset[AssetPath]
    end
end

--- 通过ItemID获取item类型
---@param ItemID int
---@return int
function UGCSystemLibrary.GetItemTypeID(ItemID) return ItemID // 1000 end

--- 输入PlayerKey获取活着的玩家，若玩家已死亡或者不存在PlayerKey对应的Pawn时则返回nil
---@param PlayerKey uint
---@return PlayerPawn
function UGCSystemLibrary.GetAlivePlayerPawnByPlayerKey(PlayerKey)
    local PlayerPawn = UGCGameSystem.GetPlayerPawnByPlayerKey(PlayerKey)
    return (UE.IsValid(PlayerPawn) and PlayerPawn:IsAlive()) and PlayerPawn or nil
end



--- 最多循环加50次
UGCSystemLibrary.LoopAddItemCountMax = 50
UGCSystemLibrary.LoopAddItemHandle = nil
UGCSystemLibrary.PlayerAddItemInfo = {} -- PlayerKey = {ItemID, Count, LoopNum}
---添加道具
---生效范围：服务器
---@return bool
---@param PlayerPawn UGCPlayerPawn_C* @玩家角色
---@param ItemID int32 @物品ID
---@param Count int32 @数量
function UGCSystemLibrary.AddItem(PlayerPawn, ItemID, Count)

    if UE.IsValid(PlayerPawn) then
        local bSucceed = UGCBackPackSystem.AddItem(PlayerPawn, ItemID, Count)
        if not bSucceed then
            UGCLogSystem.Log("[UGCSystemLibrary_AddItem]")
            if UGCSystemLibrary.PlayerAddItemInfo[PlayerPawn.PlayerKey] == nil then
                UGCSystemLibrary.PlayerAddItemInfo[PlayerPawn.PlayerKey] = {}
            end
            UGCSystemLibrary.PlayerAddItemInfo[PlayerPawn.PlayerKey][#UGCSystemLibrary.PlayerAddItemInfo[PlayerPawn.PlayerKey] + 1] = {ItemID =  ItemID, Count = Count, LoopNum = 0}
            if UGCSystemLibrary.LoopAddItemHandle == nil then
                UGCSystemLibrary.LoopAddItemHandle = UGCEventSystem.SetTimerLoop(UGCGameSystem.GameState,
                        function()
                            local PlayerKeys = table.getKeys(UGCSystemLibrary.PlayerAddItemInfo)
                            for _, PlayerKey in PlayerKeys do
                                local ItemInfos = table.DeepCopy(UGCSystemLibrary.PlayerAddItemInfo[PlayerKey])
                                local TargetPawn = UGCGameSystem.GetPlayerPawnByPlayerKey(PlayerKey)
                                if UE.IsValid(TargetPawn) then
                                    for i = #ItemInfos, 1, 1 do
                                        bSucceed = UGCBackPackSystem.AddItem(TargetPawn, ItemInfos[i].ItemID, ItemInfos[i].Count)
                                        -- 成功加入或者超过添加次数则移除
                                        if bSucceed then
                                            UGCSystemLibrary.PlayerAddItemInfo[PlayerKey][i] = nil
                                        else
                                            if ItemInfos[i].LoopNum >= UGCSystemLibrary.LoopAddItemCountMax then
                                                UGCLogSystem.LogError("[UGCSystemLibrary_AddItem] PlayerKey:%s,AddItem:%s  Failue", tostring(PlayerKey), tostring(ItemInfos[i].ItemID))
                                            else
                                                ItemInfos[i].LoopNum = ItemInfos[i].LoopNum + 1
                                            end
                                        end
                                    end
                                    if #UGCSystemLibrary.PlayerAddItemInfo[PlayerKey] == 0 then
                                        UGCSystemLibrary.PlayerAddItemInfo[PlayerKey] = nil
                                    end
                                else
                                    UGCSystemLibrary.PlayerAddItemInfo[PlayerKey] = nil
                                end
                            end
                            if table.getCount(UGCSystemLibrary.PlayerAddItemInfo) == 0 then
                                UGCEventSystem.StopTimer(UGCSystemLibrary.LoopAddItemHandle)
                            end
                            UGCLogSystem.Log("[UGCSystemLibrary_AddItem] Finish")
                        end,
                        0.1
                )
            end
        end
    else
        UGCLogSystem.LogError("[UGCSystemLibrary_AddItem] PlayerPawn is nil")
    end

end

--- 判断物体是否可以看到玩家
---@param ObjectContext UObject 目标物体
---@param EyePos FVector 物体开始检测的位置
---@param TargetPlayerPawn PlayerPawn 目标玩家
---@param LineTraceChannels table<ECollisionChannel> 检测的通道，默认为{ECollisionChannel.ECC_WorldStatic, ECollisionChannel.ECC_WorldDynamic, ECollisionChannel.ECC_Pawn}
function UGCSystemLibrary.CanSeePlayer(ObjectContext, EyePos, TargetPlayerPawn, LineTraceChannels)
    if not (UE.IsValid(ObjectContext) and UE.IsValid(TargetPlayerPawn)) then
        return
    end

    if LineTraceChannels == nil then
        LineTraceChannels = {ECollisionChannel.ECC_WorldStatic, ECollisionChannel.ECC_WorldDynamic, ECollisionChannel.ECC_Pawn}
    end
    -- UGCLogSystem.Log("[UGCSystemLibrary_CanSeePlayer] TargetPlayerPawn:%s", KismetSystemLibrary.GetObjectName(TargetPlayerPawn))
    --local SkeletonSocketNames = {"head", "spine_01", "hand_l", "hand_r", "foot_r", "foot_l"}
    local PawnPos = TargetPlayerPawn:K2_GetActorLocation()
    local UpPawnPos = table.DeepCopy(PawnPos)
    local DownPawnPos = table.DeepCopy(PawnPos)
    UpPawnPos.Z = UpPawnPos.Z + 80
    DownPawnPos.Z = DownPawnPos.Z - 80
    --for i, SocketName in pairs(SkeletonSocketNames) do
    for i, EndPos in pairs({UpPawnPos, PawnPos, DownPawnPos}) do
        -- local BornSocketPos = TargetPlayerPawn.Mesh:GetSocketLocation(SocketName)
        --if BornSocketPos then
        ---@field LineTraceSingleForObjects fun(WorldContextObject:UObject,Start:FVector,End:FVector,ObjectTypes:ULuaArrayHelper,bTraceComplex:bool,ActorsToIgnore:ULuaArrayHelper,DrawDebugType:EDrawDebugTrace,OutHit:FHitResult,bIgnoreSelf:bool,TraceColor:FLinearColor,TraceHitColor:FLinearColor,DrawTime:float):bool,FHitResult
        local bSucceed, HitResult = KismetSystemLibrary.LineTraceSingleForObjects(ObjectContext, EyePos, EndPos, LineTraceChannels, false, {ObjectContext, })
        if bSucceed then
            local HitActor = HitResult.Actor:Get()
            if HitActor == TargetPlayerPawn then
                return true
            else
                UGCLogSystem.Log("[UGCSystemLibrary_CanSeePlayer]HitActorName:%s", KismetSystemLibrary.GetObjectName(HitActor))
            end
        end
        --else
        --    UGCLogSystem.LogError("[UGCSystemLibrary_CanSeePlayer] BornSocketPos is nil")
        --end
    end
    return false
end













--- 获取其他队伍的ID
---@param TeamID uint 忽略的队伍ID
---@return table<int32> 其他队伍ID
function UGCTeamSystem.GetOtherTeamIDs(TeamID)
    local TeamIDs = UGCTeamSystem.GetTeamIDs()
    local Res = {}
    for i, v in pairs(TeamIDs) do
        if v ~= TeamID then
            Res[#Res + 1] = v
        end
    end
    return Res
end

--- 获取其他队伍的玩家
---@param TeamID uint 忽略的队伍ID
---@return table<PlayerKey> 其他玩家PlayerKey
function UGCTeamSystem.GetOtherTeamPlayerKeys(TeamID)
    local OtherTeamIDs = UGCTeamSystem.GetOtherTeamIDs(TeamID)
    local Res = {}
    for i, v in pairs(OtherTeamIDs) do
        local OtherPlayerKeys = UGCTeamSystem.GetPlayerKeysByTeamID(v)
        for _, PlayerKey in pairs(OtherPlayerKeys) do
            Res[#Res + 1] = PlayerKey
        end
    end
    return Res
end

--- 获取队伍成员PlayerKey
---@return PlayerKeys table 队伍玩家PlayerKey
function UGCTeamSystem.GetTeammates(PlayerKey)
    local Res = {}
    local TeamID = UGCPlayerStateSystem.GetTeamID(PlayerKey)
    UGCLogSystem.Log("[UGCTeamSystem_GetTeammates] TeamID:%s", tostring(TeamID))
    local Teammates = UGCTeamSystem.GetPlayerKeysByTeamID(TeamID)
    for i, v in pairs(Teammates) do
        Res[#Res + 1] = v
    end
    return Res
end