Repair Drone Software

local program = [[
textutils.slowPrint("Repair Drone Software")
textutils.slowPrint("(C) 1989 KillaVanilla Industries")
textutils.slowPrint("Running on drone ID: "..os.computerID())
textutils.slowPrint("Starting...")
rednet.open("right")
textutils.slowPrint("Press SPACEBAR to initate refueling.")
while true do
    local event, id, msg = os.pullEvent()
    if event == "key" then
        if id == keys.space then
            for i=1, 16 do
                if turtle.getItemCount(i) > 0 then
                    turtle.select(i)
                    turtle.refuel()
                end
            end
        end
    elseif event == "rednet_message" then
        if msg == "FORWARD" then
            turtle.forward()
        elseif msg == "BACK" then
            turtle.back()
        elseif msg == "TURNLEFT" then
            turtle.turnLeft()
        elseif msg == "TURNRIGHT" then
            turtle.turnRight()
        elseif msg == "UP" then
            turtle.up()
        elseif msg == "DOWN" then
            turtle.down()
        elseif string.sub(msg,1,5) == "PLACE" then
            for i=1, 16 do
                if turtle.getItemCount(i) > 0 then
                    turtle.select(i)
                    break
                end
            end
            turtle.placeDown(string.sub(msg,6))
        end
        local material = 0
        for i=1, 16 do
            material = material + turtle.getItemCount(i)
        end
        rednet.send(id, textutils.serialize({turtle.getFuelLevel(), material}))
    end
end
]]

if turtle then
    if not fs.exists("startup") then
        textutils.slowPrint("Installing: Repair Drone Software")
        local handle = fs.open("startup", "w")
        handle.write(program)
        handle.close()
        os.sleep(0.5)
        textutils.slowPrint("Installation complete, rebooting...")
        os.reboot()
    elseif fs.exists("startup") then
        shell.run("startup")
    end
end