Miner Update Manager

local args = {...}
local sides = rs.getSides()

function clearTerm()
    term.clear()
    term.setCursorPos(1, 1)
end

function getChannel(t)
    if t == "motor" then
        return "coms_turtles_motor"
    elseif t == "miner" then
        return "coms_turtles_miner"
    elseif t == "master" then
        return "coms_turtles_master"
    end

    return nil
end

for i = 1, #sides do
    if peripheral.isPresent(sides[i]) and peripheral.getType(sides[i]) == "modem" then
        rednet.open(sides[i])
        break
    end
end

if #args < 3 then
    print("Usage: update [turtle-type] [program-name] [paste-code]")
else
    clearTerm()

    turtle_channel = getChannel(args[1])
    programName = args[2]
    pasteCode = args[3]

    if not turtle_channel then
        print("Invalid turtle type. Use motor|miner")
        return
    end

    print("Updating over protocol: " .. turtle_channel)
    shell.run("pastebin get " .. pasteCode .. " program")
    print("Program downloaded.")
    sleep(1.5)

    rednet.broadcast("UPDATE", turtle_channel)

    while(true) do
        print("Waiting for ready response from turtles..")
        id, msg, proto = rednet.receive(turtle_channel, 2)
        if not proto then
            clearTerm()
            term.setTextColor(colors.red)
            print("No turtle was listening to update request.")
            break
        end

        if msg == "UPDATE_READY" then
            f = fs.open("program", "r")
            packet = textutils.serialize(
            {
                name = programName,
                content = f.readAll()
            })
            f.close()

            print("Sending program packet.")
            rednet.broadcast(packet, "coms_turtles_payload")

            sleep(1.5)
            clearTerm()
            term.setTextColor(colors.green)
            print("Update complete.")
            break
        end
    end

    fs.delete("program")
end