local Behaviour = {}
local RNG = Random.new()

function Behaviour:FindAllInRange(NPC,FindClosest,Range)
    local InRange = {}

    for _,Turret in pairs(workspace.Turrets:GetChildren()) do
        local Distance = (NPC.HumanoidRootPart.Position-Turret.PrimaryPart.Position).Magnitude
        local Config = Turret:FindFirstChild("Configuration")
        local Human = Turret:FindFirstChildOfClass("Humanoid")
        local CurrentlyTargeting = NPC:FindFirstChild("CurrentlyTargeting")

        -- Note to self: add checks for health as well --
        if Distance <= Range then
            if Human and Config and CurrentlyTargeting then
                if Human.Health > 0 then
                    if FindClosest then
                        Range = Distance
                        InRange = Turret
                    else
                        -- If the Zombie isn't currently targeting anything --
                        if CurrentlyTargeting.Value == nil then
                            table.insert(InRange, Turret)
                        end
                    end
                end
            end
        end
    end
    return InRange
end

function Behaviour:GetTurretStates(NPC)
    -- Checks the "Targeted" state of all turrets --
    -- Returns false if not all Turrets are targeted --

    local Result = true
    local TurretTable = Behaviour:FindAllInRange(NPC,false,1000)

    for _,Turret in pairs(TurretTable) do
        local Config = Turret:FindFirstChild("Configuration")
        local Human = Turret:FindFirstChildOfClass("Humanoid")

        if Config and Human then
            if Config.Targeted.Value == false then
                Result = false
            end
        end
    end

    return Result
end

function Behaviour:FindTurret(NPC)
    local AllTurretsAreTargeted = Behaviour:GetTurretStates(NPC)
    local CurrentlyTargeting = NPC:FindFirstChild("CurrentlyTargeting")

    -- If every turret is targeted --
    if AllTurretsAreTargeted and CurrentlyTargeting then
        -- Get random turret from a table with all turrets in range of 30 studs --
        local Turrets = Behaviour:FindAllInRange(NPC,false,30)
        local ChosenTurret = Turrets[RNG:NextInteger(1,#Turrets)]
        CurrentlyTargeting.Value = ChosenTurret
        return ChosenTurret

    -- If not every turret is targeted --
    elseif not AllTurretsAreTargeted then
        -- If this runs, it'll just get the closest untargetted turret --
        return Behaviour:FindAllInRange(NPC,true,30)
    end
end

return Behaviour