Bank Server Controller

--Must be called control.lua--

term.clear()
term.setCursorPos(1, 1)

local ATM = "server"
local drive = "bottom"

while true do
    term.setTextColor(colors.yellow)
    print("For balance type 1, for deposit type 2")
    print("For withdraw type 3, for transfer type 4")
    print("For add account type 5")
    term.setTextColor(1)
    local txt = read()
    if txt == "1" or txt == "2" or txt == "3" or txt == "4" or txt == "5" then
        print("Please enter the card")
        while disk.isPresent(drive) == false do
            sleep(0.1)
        end
        local id = disk.getID(drive)
        disk.eject(drive)
        if id == nil then
            printError("Must be valid card")
        else
            print("Please enter 5 number pin")
            local pin = read("*")
            if (tonumber(pin)) then
                if string.len(pin) ~= 5 then
                    printError("Must be 5 numbers")
                else
                    if txt == "1" then
                        print(bankAPI.balance(id, ATM, pin))
                    elseif txt == "2" then
                        print("Please enter deposit amount")
                        local amount = read()
                        if (tonumber(amount)) then
                            amount = tonumber(amount)
                            print(bankAPI.deposit(id, amount, ATM, pin))
                        else
                            printError("Must be a number")
                        end
                    elseif txt == "3" then
                        print("Please enter withdraw amount")
                        local amount = read()
                        if (tonumber(amount)) then
                            amount = amount tonumber(amount)
                            print(bankAPI.withdraw(id, amount, ATM, pin))
                        else
                            printError("Must be a number")
                        end
                    elseif txt == "4" then
                        print("Please enter the amount")
                        local amount = read()
                        if (tonumber(amount)) then
                            print("Please enter id to transfer to")
                            local id2 = read()
                            if (tonumber(id2)) then
                                id2 = tonumber(id2)
                                print(bankAPI.transfer(id, id2, amount, ATM, pin))
                            else
                                printError("Must be a valid id")
                            end

                        else
                            printError("Must be a number")
                        end
                    elseif txt == "5" then
                        print(bankAPI.create(id, ATM, pin))
                    end
                end
            else
                printError("Must be a number")
            end
        end
    else
        printError("Must be a number from the list")
    end
end