SoLMISS Installer v2

local mode = (select(1, ...) or "--client"):sub(3)

local function color(...)
  for i, arg in ipairs({...}) do
    if type(arg) == "number" then
      term.setTextColor(arg)
    else
      write(arg)
    end
  end
end

term.clear()
term.setCursorPos(1,1)
color(colors.yellow, "SoLMISS Installer\n")
if mode ~= "client" and mode ~= "server" then
  printError("invalid mode '"..mode.."'; must be 'client' or 'server'")
  return
end
color(colors.white, "Running in ", colors.lightBlue, mode, colors.white, " mode\n")

local url = "https://raw.githubusercontent.com/ocawesome101/solmiss/primary/"

local function dl(f)
  local hand, err = http.get(url..f, nil, true)
  if not hand then
    return
  end

  local data = hand.readAll()
  hand.close()

  return data
end

color(colors.white, "Downloading files... ")
local common = dl("solmiss/common.lua")
local special = dl(mode == 'server' and "server.lua" or "client.lua")
if not (common and special) then
  printError("failed")
  return
end

color(colors.lime, "success\n")

fs.makeDir("/solmiss")
io.open("/solmiss/common.lua", "w"):write(common):close()
io.open("/startup.lua", "w"):write(special):close()

local function at(x, y, c)
  term.setCursorPos(x, y)
  term.setTextColor(c)
  return term
end

local function progress(y, a, b)
  local progress = a/100
  if b then progress = a/b end

  local w = term.getSize()
  at(1, y, colors.yellow).write("[")
  at(2, y, colors.white).write(("#"):rep(math.ceil(progress * (w - 2))))
  at(w, y, colors.yellow).write("]")
  term.setTextColor(colors.white)
end

color(colors.white, "Done. Restarting into setup screen.\n")
local finish = os.epoch("utc") + 3000
local _, y = term.getCursorPos()
while os.epoch("utc") < finish do
  sleep(0)
  progress(y, os.epoch("utc") - finish + 3000, 3000)
end

os.reboot()