energy state change

local modem = peripheral.find("modem") or error("No modem attached!")
local monitor = peripheral.wrap("monitor_2") or print("Monitor unavailable.. Status wont be indicated.")
modem.open(43)

print("This is a secure environment! Please enter the password.")
local input = read()
if input == "verysecurepassword123" then
    print("What would you like to do? SHUTDOWN or OPERATE")
    local toDo = read()
    if toDo == "SHUTDOWN" then
        if monitor then
            monitor.clear()
            monitor.setCursorPos(1,1)
            monitor.write("SHUTDOWN SEQUENCE")
        end
        print("SHUTDOWN sequence initiated!")
        sleep(1)
        modem.transmit(43, 43, "SHUTDOWN")
        while true do
            local event, side, channel, replyChannel, message, distance = os.pullEvent("modem_message")
            if channel == 45 then
                local identifier, action = message:match("^(%w+)%s+(%d+)$")
                if action == "SHUTDOWN" then
                    if monitor then
                        local cx, cy = monitor.getCursorPos()
                        monitor.setCursorPos(cx + 1, cy + 1)
                        monitor.write(identifier .. " HAS SHUT DOWN")
                    end
                    print(identifier .. " HAS SHUT DOWN")
                end
            end
            sleep(0.5)
        end
    elseif toDo == "OPERATE" then
        if monitor then
            monitor.clear()
            monitor.setCursorPos(1,1)
            monitor.write("OPERATE SEQUENCE")
        end
        print("OPERATE sequence initiated!")
        sleep(1)
        modem.transmit(43, 43, "OPERATE")
        while true do
            local event, side, channel, replyChannel, message, distance = os.pullEvent("modem_message")
            if channel == 43 then
                local identifier, action = message:match("^(%w+)%s+(%d+)$")
                if action == "OPERATIVE" then
                    if monitor then
                        local cx, cy = monitor.getCursorPos()
                        monitor.setCursorPos(cx + 1, cy + 1)
                        monitor.write(identifier .. " IS OPERATIVE")
                    end
                    print(identifier .. " IS OPERATIVE")
                end
            end
            sleep(0.5)
        end
    end
end