Computer read message

local myid = os.computerID()
local turtlelist = { 0, 5, 6 } -- Enter the ID of all your Mining Turtles Here --
local turtlename = { "DIGGE01", "DIGGE02", "DIGGE03" } -- Enter the Name/ Label you have given your turtle here --

mon=peripheral.wrap("left")
print("Turtle Monitor Terminal")
rednet.open("top") -- Edit to what ever side you modem is on --


print("Computer id for Monitor Terminal is "..tostring(myid))

function findIndexForId(id)
for i,v in ipairs(turtlelist) do
if id == v then
return i
end
end
return 0
end

function checkTurtleForName(id,tlabel)
local i = findIndexForId(id)
if i == 0 then
return -1
end
if turtlename == tlabel then
return 1
else
return 0
end
end

local isValid = 0

while true do
local timeString = textutils.formatTime(os.time(),false)
senderId, message, distance = rednet.receive()
isValid = checkTurtleForName(senderId, message)

if isValid == -1 then
print("A Turtle"..senderId.." sent us a request but is not in our list")
elseif isValid == 1 then
rednet.send(senderId, "Valid")
mon.scroll(1)
mon.setCursorPos(1,5)
mon.write("Mining Complete: "..senderId.." "..message.." at "..timeString)
else
rednet.send(senderId, "Not Valid")
mon.scroll(1)
mon.setCursorPos(1,5)
mon.write("Error from "..senderId.." "..message.." at "..timeString)
end
end