Message System 2 Installer

local vers = "2.0"

term.clear()
term.setCursorPos(1,1)

--This is a function is part of Pastebin! I didn't write this--
--Well, I rewrote it to be used inside of a program rather than as a program itself--
function get(sCode,sFile)
    local sPath = shell.resolve( sFile )
    if fs.exists( sPath ) then
        return false
    end
    local response = http.get("http://pastebin.com/raw.php?i="..textutils.urlEncode( sCode ))
    if response then
        local sResponse = response.readAll()
        response.close()
        local file = fs.open( sPath, "w" )
        file.write( sResponse )
        file.close()
        return true
    else
        return false
    end
end

--Program--
if not http then
    error("Http API not enabled")
end
if not term.isColor() then
  print("NOTE: Message System 2 is designed for advanced computers. It will not run on regular computers")
  print(" ")
end
print("Messagesystem Installer v"..vers.." is ready!")
print("Press any key to continue...")
os.pullEvent("key")
print("Downloading MessageSystem...")
if fs.exists("ms2") then
  print("File conflict! Deleting...")
  shell.run("delete ms2")
  print("Fixed. Retrying...")
end
if get("npEnj7XD","ms2") then
  print("Message System 2 successfully downloaded")
else
  print("Something went wrong while downloading :/")
  return
end

print("Downloading background...")
if fs.exists("msbg") then
  print("File conflict! Deleting...")
  shell.run("delete msbg")
  print("Fixed. Retrying...")
end
if get("79HdkjG7","msbg") then
  print("Background successfully downloaded")
else
  print("Something went wrong while downloading :/")
  return
end

print("Install Completed")
print("Run Message System 2 now?")
print("y/n")
local event,par1
local run = false
while true do
  event,par1 = os.pullEvent("char")
  if par1 == "y" then
    print("Running...")
    run = true
    break
  elseif par1 == "n" then
    print("Thank you for using Message System :)")
    break
  end
end

if run then
  shell.run("ms2")
end