ComputerCraft Quarry Turtle

term.clear();
term.setCursorPos(1,1)
print("Turtle Mining Client")
print("Starting...");
print("Setting Up Modem");
local run = false;

local hasModem = false;
local modemSide;
local modemProtocol = "mining"
local modemHostname;

if peripheral.getType("right") == "modem" then hasModem = true; modemSide = "right";
elseif peripheral.getType("left") == "modem" then hasModem= true; modemSide = "left";
elseif peripheral.getType("front") == "modem" then hasModem= true; modemSide = "front";
elseif peripheral.getType("back") == "modem" then hasModem= true; modemSide = "back";
elseif peripheral.getType("top") == "modem" then hasModem= true; modemSide = "top";
elseif peripheral.getType("bottom") == "modem" then hasModem= true; modemSide = "bottom";
else term.setTextColor(colors.red); print("Error: No Modem Found! Please ensure that a modem is connected to the turtle."); term.setTextColor(colors.white); os.exit()
end

rednet.open(modemSide);
for i=1, 25, 1 do
    rednet.unhost(modemProtocol, "MiningTurtle" .. i) --Ensures that turtle does not already have this hostname.
    local checkForTurtle = rednet.lookup(modemProtocol, "MiningTurtle" .. i);
    if checkForTurtle == nil then modemHostname = "MiningTurtle" .. i; rednet.host(modemProtocol, "MiningTurtle" .. i); run = true; break; end
end
if run == false then
    term.setTextColor(colors.red);
    print("There Seems to be no slot available...Exiting");
    term.setTextColor(colors.white);
    os.exit();
else
    term.setTextColor(colors.green);
    print("Set hostname to " .. modemHostname);
    term.setTextColor(colors.white);
end

while true do
    sleep(0)
    local event, key = os.pullEvent("key") -- limit os.pullEvent to the 'key' event
    if key == keys.space then break; end
end



--Ending Program
print("Exiting Program...Please do not turn off system.\n")