auto_update

--auto_updater
gist_id = "2b62c39644f9bd1c18128a12688c6386"
current_name = "auto_update"
check_counter = 100

--small change
print("small change")
os.sleep(1)

function readAll(file)
    local f = io.lines(file)
    local content = ""
    for y in f do
        content = content .. y
    end
return content
end


function my_print(message)
    print(message)
    rednet.open("right")
    rednet.send(61,message)
end

count = 1
while(true) do
count = count + 1
my_print("check for updates")
    if count % check_counter == count - math.floor(count/check_counter)*check_counter then
        print("checking for differences")
        if(fs.exists("new_file")) then
            shell.run("rm new_file")
        end
        shell.run("turtlegist get " .. gist_id .. " new_file")
        old_file = readAll(current_name)
        new_file = readAll("new_file")
        if old_file == new_file then
            print(new_file)
            print ("files match no need to update. will try again later.")
            os.sleep(5)
        else
            print ("differences found... will update and restart automatically")
            file = io.open("rewriter", "w")
            file:write("os.sleep(10)\nshell.run('rm auto_update')\nshell.run('cp new_file " .. current_name .. "')\nshell.run('bg " .. current_name .."')\n")
            io.close(file)
            shell.run("bg rewriter")
            return
        end
    end
  --os.sleep(1)
end