local SimpleSkillTask = require("Script.SimpleSkill.Task.SimpleSkillTask")
local SimpleSkillTask_Exhaust = LuaClass("SimpleSkillTask_Exhaust", SimpleSkillTask)
local SimpleSkillSelectorFactory = require("Script.SimpleSkill.Factory.SimpleSkillSelectorFactory")


function SimpleSkillTask_Exhaust:ctor(OwnerSkill)
    SimpleSkillTask_Exhaust.super.ctor(self, OwnerSkill)
end

function SimpleSkillTask_Exhaust:InitTaskFromData(TaskData, CasterPawn)
    SimpleSkillTask.InitTaskFromData(self, TaskData, CasterPawn)

    self.TaskName = "Exhaust"

    local SelectorData = {
        LimitNum = 0,
        ForwardOffset = 0,
        Param_Float = 0,
        Param_Vector = VectorHelper.VectorZero(),
    }
    local SelectorClass = SimpleSkillSelectorFactory.GetSelectorByType(ESkillSelectorType.SelfPawn)
    self.MonsterSelector = SelectorClass.New()
    self.MonsterSelector:InitSelectorFromData(SelectorData, self.CasterPawn)

    self.MonsterClass = UE.LoadClass(BPClassPath.MonsterBase)
    self.AffectedMonsters = {}
end

function SimpleSkillTask_Exhaust:ActivateTask()
    SimpleSkillTask.ActivateTask(self)
    
    self:EnableSkillEffect(self.CasterPawn, nil)
end

function SimpleSkillTask_Exhaust:ActivateTaskInTimer()
    self.LoopTimerHandle = EventSystem.SetTimerLoop(self.CasterPawn, function() 
        if self.MonsterSelector == nil then
            return
        end

        local AttackMonsters = UGCGameSystem.GameState:GetAttackWaveSpawner().SpawnedMonsters
        local HangUpRoomMonsters = UGCGameSystem.GameState:GetSpawnerByPlayerKey(self.CasterPawn.PlayerKey).SpawnedMonsters

        for _, Monster in pairs(HangUpRoomMonsters) do
            table.insert(AttackMonsters, Monster)
        end

        for _, Monster in pairs(AttackMonsters) do
            if Monster ~= nil and UE.IsValid(Monster) and UGCSimpleCharacterSystem.GetHealth(Monster) > 0 then
                local MonsterLoc = Monster:K2_GetActorLocation()
                local PlayerLoc = self.CasterPawn:K2_GetActorLocation()
                if VectorHelper.GetDistance2D(MonsterLoc, PlayerLoc) <= 300.0 then
                    Monster:AddModifyDamageDelegationFun(
                        "ActivateExhaust"..KismetSystemLibrary.GetObjectName(self.CasterPawn),
                        function (DamageAmount, DamageEvent, EventInstigator, DamageCauser)
                            return DamageAmount * 1.3
                        end
                    )
                    table.insert(self.AffectedMonsters, Monster)
                else
                    Monster:RemoveModifyDamageDelegation("ActivateExhaust"..KismetSystemLibrary.GetObjectName(self.CasterPawn))
                    table.removeValue(self.AffectedMonsters, Monster)
                end
            end
        end
    end, 0.2)
end

function SimpleSkillTask_Exhaust:DeactivateTask()
    if self.LoopTimerHandle ~= nil then
        EventSystem.StopTimer(self.LoopTimerHandle)

        for _, Monster in pairs(self.AffectedMonsters) do
            if Monster ~= nil and UE.IsValid(Monster) and UGCSimpleCharacterSystem.GetHealth(Monster) > 0 then
                Monster:RemoveModifyDamageDelegation("ActivateExhaust"..KismetSystemLibrary.GetObjectName(self.CasterPawn))
            end
        end

        self.AffectedMonsters = {}
    end
end

return SimpleSkillTask_Exhaust;