stockpile-installer

local VERSION_FILE = "/stockpile/version"

function parseVersion(v)
  local version = {}
  for i in string.gmatch(v, "%d+") do
    table.insert(version, i)
  end
  return version
end

function isNewerVersion(v1, v2)
  for i = 1, #v1 do
    if v1[i] > v2[i] then
      return true
    elseif v1[i] < v2[i] then
      return false
    end
  end
  return false
end

local runInstall = false

if fs.exists(VERSION_FILE) then
  local handle = fs.open(VERSION_FILE, "r")
  local rawVersion = handle.readAll()
  handle.close()

  local currentVersion = parseVersion(rawVersion)

  handle = http.get("https://raw.githubusercontent.com/LordHelmchen/stockpile/master" .. VERSION_FILE)
  local rawRemoteVersion = handle.readAll()
  handle.close()
  local remoteVersion = parseVersion(rawRemoteVersion)

  if not isNewerVersion(remoteVersion, currentVersion) then
    print("Already at newest version (" .. rawVersion .. ")! Continue update anyway?")
    print("(y)es / (n)o")
    io.write("> ")

    while true do
      local sEvent, key = os.pullEvent("key")

      if key == keys.y then
        runInstall = true
        break
      elseif key == keys.n then
        print("Aborting.")
        break
      end
    end
  else
    runInstall = true
  end
else
  runInstall = true
end

if runInstall then
  shell.run("pastebin get wPtGKMam github")
  shell.run("github LordHelmchen stockpile /downloads")
  shell.run("/downloads/stockpile/bootstrap")
end