Computercraft Pastebin Updater

args = {...}
--Variable Configuration
-- 0 = pastebin override used - will not use config file | 1 = use config file for the pastebin code
files = 0
-- Pastebin file code
codeTxt = " "
prog = " "
-- Various variables - x is for error checking
x = 1
y = 1
z = 1
if args[1] == "Help" or args[1] == "help" or args[1] == "HELP" then
    term.clear()
    term.setCursorPos(1,1)
    term.setTextColor(colors.orange)
    print("Pastebin Updater Help - Page 1")
    print(" ")
    term.setTextColor(colors.white)
    print("Command Usage:")
    print("update [file name] [pastebin code]")
    print("The pastebin code is only needed if you want to use a different one than provided in the configuration file")
    print(" ")
    print("Press any key to continue")
    os.pullEvent( 'key' )
    term.clear()
    term.setCursorPos(1,1)
    term.setTextColor(colors.orange)
    print("Pastebin Updater Help - Page 2")
    print(" ")
    term.setTextColor(colors.white)
    print("If a config file isn't found for a program, the updater will make one and ask you to provide the pastebin code.")
    print(" ")
    print("The code is the text that comes after pastebin.com/")
    print(" ")
    print("If you incorrectly type the pastebin code, the only way to change it is to either edit the config file, or delete it and have the updater make a new one.")
    print(" ")
    print("Update files are named as \"program.pbu\"")
    print("For example, the update file for the program \"test\" would be \"test.pbu\"")
    print("Press any key to continue")
    os.pullEvent( 'key' )
    print("end of help segment")
    x = 0
end

if args[1] == nil then
    x = 0
    term.setTextColor(colors.red)
    print("Error: Missing Parameter! File name is required!")
else
    prog = args[1]
end
if args[2] ~= nil then
    print("Override parameter detected! Using this instead of config file.")
    codeTxt = args[2]
else
    files = 1
end


-- Updater
term.setTextColor(colors.white)
if x == 1 then
    term.clear()
    term.setCursorPos(1,1)
    -- checks if it is to use the config file or just use the override if provided
    if files == 1 then
        print("Checking for " .. prog .. "'s config file")
        -- Checks if the config file exists. If it doesn't, it creates one
        if not fs.exists(prog ..".pbu") then
            y = 0
            term.setTextColor(colors.red)
            print("Warning: Config file not found!")
            term.setTextColor(colors.white)
            print("We will now create one for future reference")
            -- Code Input Loop
            while y == 0 do
                term.setTextColor(colors.white)
                print("Please enter the pastebin code we will use to update this program:")
                codeTxt = read()
                z = 0
                -- Code Confirmation Loop
                while z == 0 do
                    term.setTextColor(colors.white)
                    print(codeTxt .. " - Is this code correct? y/n")
                    confirm = read()
                    if confirm == "n" then
                        z = 1
                    elseif confirm == "y" then
                        term.setTextColor(colors.green)
                        print("Code confirmed!")
                        term.setTextColor(colors.white)
                        y = 1
                        z = 1
                    else
                        term.setTextColor(colors.red)
                        print("Invalid input! Please try again.")
                    end
                end
            end
        print("Generating file and updating the program")
        config = fs.open(prog ..".pbu" , "w")
        config.write(codeTxt)
        config.close()
        print("Config file generated! Now updating your program")
        fs.delete(prog)
        shell.run("pastebin get " .. codeTxt .. " " .. prog)
        print("Program updated!")
        else
            print("Config file detected!")
            sleep(1)
            term.clear()
            term.setCursorPos(1,1)
            config = fs.open(prog .. ".pbu", "r")
            codeTxt = config.readLine()
            config.close()
            print("Pastebin code obtained!")
            print("Updating Program!")
            fs.delete(prog)
            shell.run("pastebin get " .. codeTxt .. " " .. prog)
            print("Program updated!")
        end
    else
        print("Updating progam using the override...")
        fs.delete(prog)
        shell.run("pastebin get " .. codeTxt .. " " .. prog)
        print("Program updated!")
    end
else
    print("Updater Terminated")
end