CalculatorScript

local CalculatorFrame = script.Parent:WaitForChild("CalculatorFrame")
local ButtonsFrame = CalculatorFrame:WaitForChild("ButtonsFrame")
local ListFrame = ButtonsFrame:WaitForChild("ListLayout")
local Input = CalculatorFrame:WaitForChild("Input")
local SymbolData = require(script.SymbolData)
local CalculateModule = require(script.MainModule)
local Number
local Calculation = ""

Input.Text = ""

function Calculate(String)
    local Ran, Num = pcall( CalculateModule, String )
    if not Ran then Input.Text = "Invalid Calculation" return end
    return Num
end

for _, Button in pairs(ListFrame:GetChildren()) do
    if not Button:IsA("TextButton") then continue end
    Button.MouseButton1Click:Connect(function()
        if tonumber(Button.Name) then
            if tonumber(Input.Text) then
                Input.Text = Input.Text..Button.Name
            else
                Input.Text = Button.Name
            end
            if Number == nil then
                Number = tostring(tonumber(Button.Name))
            else
                Number = Number..tostring(tonumber(Button.Name))
            end
            Calculation = Calculation..tostring(Button.Name)
        elseif Button.Name == "=" then
            Input.Text = Calculate(Calculation)
        elseif Button.Name == "C"then
            Calculation = ""
            Number = nil
            Input.Text = ""
        else
            if Number == nil then return end
            local CodeSymbol = SymbolData[Button.Name]
            if Calculation == nil then
                return
            else
                Calculation = Calculation..CodeSymbol
            end
            Number = nil
            Input.Text = Button.Name
        end
    end)
end