---@class BP_Skill_ToxicRain_C:BP_Skill_Actor_C
--Edit Below--

local SkillActorBase = require('Script.Blueprint.SceneObject.SkillActor.BP_Skill_Actor')
local BP_Skill_ToxicRain = setmetatable(
    {
        AdditionDamageRateTable = {1.2, 1.8, 2.4, 3.0},
        DefenceReductionRateTable = {0.95, 0.90, 0.85, 0.75},
        CurDamageRate = 0.0,
        CurDefenceReductionRate = 0.0,
        AffectedMonster = {},

        TimerHandle = nil,
    },
    {
        __index = SkillActorBase,
        __metatable = SkillActorBase
    }
)


function BP_Skill_ToxicRain:ReceiveBeginPlay()
    SkillActorBase.ReceiveBeginPlay(self)
    self:SetSphereRadius(150)
end

function BP_Skill_ToxicRain:ReceiveEndPlay()
    for Monster, CachedDefence in pairs(self.AffectedMonster) do
        if Monster ~= nil and UE.IsValid(Monster) then
            Monster.PhysicalDefense = CachedDefence
        end
    end
    self.AffectedMonster = {}

    if self.TimerHandle then
        EventSystem.StopTimer(self.TimerHandle)
    end

    self.SuperClass.ReceiveEndPlay(self)
end

function BP_Skill_ToxicRain:SetLevel(NewLevel)
    SkillActorBase.SetLevel(self, NewLevel)

    self.CurDamageRate = self.AdditionDamageRateTable[NewLevel]
    self.CurDefenceReductionRate = self.DefenceReductionRateTable[NewLevel]
end

function BP_Skill_ToxicRain:OnMonsterBeginOverlap(Monster)
    if self.TimerHandle == nil then
        self:SetupTimer()
    end

    self.AffectedMonster[Monster] = Monster.PhysicalDefense
    Monster.PhysicalDefense = Monster.PhysicalDefense * self.CurDefenceReductionRate
end

function BP_Skill_ToxicRain:OnMonsterEndOverlap(Monster)
    if self.AffectedMonster[Monster] then
        Monster.PhysicalDefense = self.AffectedMonster[Monster]
    end
end

function BP_Skill_ToxicRain:SetupTimer()
    self.TimerHandle = EventSystem.SetTimerLoop(self, function()
        local DamageAmount = 120 + UGCGameSystem.GetPlayerStateByPlayerKey(self.CasterPawn.PlayerKey).Attributes[AttributeType.Base].Base_Attack * self.CurDamageRate
        local EventInstigator = UGCGameSystem.GetPlayerControllerByPlayerKey(self.CasterPawn.PlayerKey)
        
        for Monster, CachedDefence in pairs(self.AffectedMonster) do
            if Monster ~= nil and UE.IsValid(Monster) and UGCSimpleCharacterSystem.GetHealth(Monster) > 0 then
                UGCGameSystem.ApplyDamage(Monster, DamageAmount, EventInstigator, self.CasterPawn, EDamageType.ShootDamage)
            end
        end
    end, 1.0)
end

return BP_Skill_ToxicRain;