local SimpleSkillTask = require("Script.SimpleSkill.Task.SimpleSkillTask")
local SimpleSkillTask_Crack = LuaClass("SimpleSkillTask_Crack", SimpleSkillTask)

SimpleSkillTask_Crack.CrackTargetLimitNumTable = {1, 2, 3, 4}
SimpleSkillTask_Crack.CurCrackTargetLimitNum = 0

SimpleSkillTask_Crack.BindWeapon = nil

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

function SimpleSkillTask_Crack:InitTaskFromData(TaskData, CasterPawn)
    SimpleSkillTask.InitTaskFromData(self, TaskData, CasterPawn)
    self.TaskName = "Crack"
end

function SimpleSkillTask_Crack:UpdateSkillLevel(NewSkillLevel)
    SimpleSkillTask.UpdateSkillLevel(self, NewSkillLevel)

    self.CurCrackTargetLimitNum = self.CrackTargetLimitNumTable[NewSkillLevel]
end

function SimpleSkillTask_Crack:ActivateTask()
    SimpleSkillTask.ActivateTask(self)

    local CasterPawnWeapon = self.CasterPawn:GetWeaponComponent()
    if CasterPawnWeapon ~= nil and UE.IsValid(CasterPawnWeapon) then
        self.BindWeapon = CasterPawnWeapon
        self.BindWeapon.OnFireDelegate:Add(self.OnCasterPawnFire, self)
    else
        self.CasterPawn.OnWeaponSpawnedDelegate:Add(self.OnWeaponSpawned, self)
    end
end

function SimpleSkillTask_Crack:DeactivateTask()
    self.CasterPawn.OnWeaponSpawnedDelegate:Remove(self.OnWeaponSpawned, self)

    if self.BindWeapon ~= nil and UE.IsValid(self.BindWeapon) then
        self.BindWeapon.OnFireDelegate:Remove(self.OnCasterPawnFire, self)
        self.BindWeapon = nil
    end
end

function SimpleSkillTask_Crack:OnWeaponSpawned(Pawn)
    if Pawn ~= self.CasterPawn then
        return
    end

    local CasterPawnWeapon = self.CasterPawn:GetWeaponComponent()
    if CasterPawnWeapon ~= nil and UE.IsValid(CasterPawnWeapon) then
        self.BindWeapon = CasterPawnWeapon
        self.BindWeapon.OnFireDelegate:Add(self.OnCasterPawnFire, self)
    end
end

function SimpleSkillTask_Crack:OnCasterPawnFire(Weapon, BaseDamage)
    if self.BindWeapon ~= Weapon then
        return
    end

    local ShootTarget = Weapon.TargetMonster
    local SphereLoc = ShootTarget:K2_GetActorLocation()
    SphereLoc.Z = SphereLoc.Z - ShootTarget.CapsuleComponent.CapsuleHalfHeight
    
    local ObjectTypes = {}
    local ActorClassFilter = UE.LoadClass(BPClassPath.MonsterBase)
    local ActorsToIgnore = {self.CasterPawn, ShootTarget}
    local Radius = 200
    local RetVal, OutActors = KismetSystemLibrary.SphereOverlapActors(self.CasterPawn, SphereLoc, Radius, ObjectTypes, ActorClassFilter, ActorsToIgnore)
    
    if GlobalConfigs.OpenDebug then
        UnrealNetwork.CallUnrealRPC_Multicast(self.CasterPawn, "DrawDebugSphere", VectorHelper.ToLuaTable(SphereLoc), {1,0,0,1}, Radius)
    end

    local NearbyPawns = {}
    if RetVal then
        local PickedMonsterNum = 0
        for _, Monster in pairs(OutActors) do
            if PickedMonsterNum >= self.CurCrackTargetLimitNum then
                break
            end
            
            if Monster ~= nil and UE.IsValid(Monster) and UGCSimpleCharacterSystem.GetHealth(Monster) > 0 then
                table.insert(NearbyPawns, Monster)
                PickedMonsterNum = PickedMonsterNum + 1
            end
        end
    end
    if not table.isEmpty(NearbyPawns) then
        local DamageAmount = BaseDamage * 0.25
        local EventInstigator = UGCGameSystem.GetPlayerControllerByPlayerKey(self.CasterPawn.PlayerKey)
        for _, Monster in pairs(NearbyPawns) do
            UGCGameSystem.ApplyDamage(Monster, DamageAmount, EventInstigator, self.CasterPawn, EDamageType.ShootDamage)
        end
        self:EnableSkillEffect(self.CasterPawn, NearbyPawns, EEffectSpawnLocationType.Middle)
    end
end

return SimpleSkillTask_Crack;