-- 技能任务脚本，实际技能效果实现在此
local SimpleSkillTask = LuaClass("SimpleSkillTask")

SimpleSkillTask.OwnerSkill = nil
SimpleSkillTask.SkillName = ESkillName.Default
SimpleSkillTask.TaskName = ""
SimpleSkillTask.SkillLevel = 1

SimpleSkillTask.CasterPawn = nil
SimpleSkillTask.DurationPolicy = ETaskDurationPolicy.Instant
SimpleSkillTask.Duration = 0
SimpleSkillTask.DurationTimer = 0
SimpleSkillTask.Period = 0
SimpleSkillTask.ExecuteOnApply = true

SimpleSkillTask.IsActivated = false

SimpleSkillTask.EffectId = 0
SimpleSkillTask.TaskTimer = nil
SimpleSkillTask.Selector = nil

SimpleSkillTask.SkillEffects = {}
SimpleSkillTask.TargetPawns = {}

function SimpleSkillTask:ctor(OwnerSkill)
    self.OwnerSkill = OwnerSkill
    self.SkillName = OwnerSkill.SkillName
    self.SkillLevel = OwnerSkill.SkillLevel
end

function SimpleSkillTask:UpdateSkillLevel(NewSkillLevel)
    self.SkillLevel = NewSkillLevel
end

function SimpleSkillTask:InitTaskFromData(TaskData, CasterPawn)
    self.CasterPawn = CasterPawn
    self.DurationPolicy = TaskData.DurationPolicy
    self.Duration = TaskData.Duration
    self.Period = TaskData.Period
    self.ExecuteOnApply = TaskData.ExecuteOnApply
    self.EffectId = TaskData.EffectId

    self.IsActivated = false
end

--子类实现
function SimpleSkillTask:ActivateTask()
    if self.IsActivated then
        return
    end

    UE.Log("[SimpleSkillTask] [%s][%s] Task Activated", KismetSystemLibrary.GetObjectName(self.CasterPawn), self.TaskName)

    if self.DurationPolicy == ETaskDurationPolicy.HasDuration and self.Duration > 0 then
        self.IsActivated = true
        
        if self.Period > 0 then
            if self.ExecuteOnApply then
                self:ActivateTaskInTimer()
                self:PlaySkillSound(self.CasterPawn)
            end

            self.TaskTimer = EventSystem.SetTimerLoop(self.CasterPawn, function()
                self:ActivateTaskInTimer()
                self:PlaySkillSound(self.CasterPawn)
                self.DurationTimer = self.DurationTimer + self.Period
                UE.Log("[SimpleSkillTask] [%s][%s] DurationTimer = %.2f", KismetSystemLibrary.GetObjectName(self.CasterPawn), self.TaskName, self.DurationTimer)
                if self.DurationTimer >= self.Duration then
                    self:EndTask()
                end
            end, self.Period)
        else
            --- 如果Period小于等于0,则直接执行一次任务,在Duration后进行移除
            self:ActivateTaskInTimer()
            self:PlaySkillSound(self.CasterPawn)
            self.TaskTimer = EventSystem.SetTimer(self.CasterPawn, function()
                self:EndTask()
            end, self.Duration)
        end
    else
        self:PlaySkillSound(self.CasterPawn)
    end
end

function SimpleSkillTask:EndTask()
    UE.Log("[SimpleSkillTask] [%s][%s] Task End", KismetSystemLibrary.GetObjectName(self.CasterPawn), self.TaskName)
    if self.TaskTimer ~= nil then
        EventSystem.StopTimer(self.TaskTimer)
    end

    self:DeactivateTask()

    self.IsActivated = false
end

-- 子类实现,非瞬时的技能任务结束时执行
function SimpleSkillTask:DeactivateTask()
end

-- 如果Task需要周期性执行,则子类需将Task执行逻辑实现
function SimpleSkillTask:ActivateTaskInTimer()
end

---播放技能特效: 默认SpawnLocationType为Attach
---@param Pawn APawn    玩家
---@param ActorList BP_MonsterBase_C[]  目标怪物
---@param SpawnLocationType EEffectSpawnLocationType    位置类型
---@param BoneName string   绑定骨骼名称
function SimpleSkillTask:EnableSkillEffect(Pawn, ActorList, SpawnLocationType, BoneName)
    UE.Log("[SimpleSkillTask:EnableSkillEffect] SkillName: %d", self.SkillName)
    if SpawnLocationType == nil then
        SpawnLocationType = EEffectSpawnLocationType.Attach
    end
    local Duration = 0
    if self.DurationPolicy == ETaskDurationPolicy.HasDuration and self.Duration > 0 then
        Duration = self.Duration
    end
    local InstanceId = GameDataManager.GetEffectInstanceId()
    local EffectId = self.EffectId
    UnrealNetwork.CallUnrealRPC_Multicast(self.CasterPawn, "Client_MulticastRPC_PlayEffect", InstanceId, EffectId, Pawn, ActorList, Duration, SpawnLocationType, BoneName)
end

---@param EffectId number                               特效实例ID
---@param Pawn APawn                                    特效起始
---@param ActorList APawn[]                             特效终点(若为空,则需填入指定旋转)
---@param Duration number                               持续时间(默认0,自动销毁)
---@param SpawnLocationType EEffectSpawnLocationType    位置类型(默认为Bottom)
---@param BoneName string                               绑定骨骼名称
function SimpleSkillTask:EnableEffectWithId(EffectId, Pawn, ActorList, Duration, SpawnLocationType, BoneName)
    UE.Log("[SimpleSkillTask:EnableEffectWithId] SkillName: %d", self.SkillName)
    if SpawnLocationType == nil then
        SpawnLocationType = EEffectSpawnLocationType.Bottom
    end
    if Duration == nil then
        Duration = 0
    end
    local InstanceId = GameDataManager.GetEffectInstanceId()
    UnrealNetwork.CallUnrealRPC_Multicast(self.CasterPawn, "Client_MulticastRPC_PlayEffect", InstanceId, EffectId, Pawn, ActorList, Duration, SpawnLocationType, BoneName)
end

---播放指向型特效(InstanceId, EffectId, CasterActor, DestActor, Duration, Rotation)
---@param EffectId number       特效实例ID
---@param CasterActor APawn     特效起始
---@param DestActor APawn       特效终点(若为空,则需填入指定旋转)
---@param Duration number       持续时间(默认0,自动销毁)
---@param Rotation FRotator     指定旋转(DestActor为空时才生效)
function SimpleSkillTask:EnableDirectionalEffect(EffectId, CasterActor, DestActor, Duration, Rotation)
    UE.Log("[SimpleSkillTask:EnableDirectionalEffect] SkillName: %d", self.SkillName)
    local InstanceId = GameDataManager.GetEffectInstanceId()
    UnrealNetwork.CallUnrealRPC_Multicast(self.CasterPawn, "Client_MulticastRPC_PlayDirectionalEffect", InstanceId, EffectId, CasterActor, DestActor, Duration, Rotation)
end

---生成技能Actor
function SimpleSkillTask:SpawnSkillActor(BPClassPath, CasterActor, Location, Rotation)
    local Class = UE.LoadClass(BPClassPath)
    local SkillActor = UGCGameSystem.SpawnActor(CasterActor, Class, Location, Rotation, VectorHelper.ScaleOne(), nil)
    if not SkillActor then
        return nil
    end
    SkillActor:SetOwner(CasterActor)
    SkillActor:SetCasterPawn(CasterActor)
    SkillActor:SetLevel(self.SkillLevel)

    return SkillActor
end

---播放技能音效
function SimpleSkillTask:PlaySkillSound(CasterActor)
    SoundManager.MulticastPlaySoundAtLocation(100 + self.SkillName, CasterActor:K2_GetActorLocation(), CasterActor:K2_GetActorRotation())
end

---获取目标Pawn
---@return TargetPawns[]
function SimpleSkillTask:GetTargetPawns()
    self.OwnerSkill.TargetPawns = self.OwnerSkill:GetTargetPawns()

    return self.OwnerSkill.TargetPawns
end

return SimpleSkillTask;