local LOCAL_MANIFEST_PATH = '/trapos/manifest.json';

local function readLocalManifest()
  if not fs.exists(LOCAL_MANIFEST_PATH) then return nil end
  local f = fs.open(LOCAL_MANIFEST_PATH, 'r');
  if not f then return nil end
  local data = f.readAll();
  f.close();
  if not data or data == '' then return nil end
  return textutils.unserializeJSON(data);
end

local manifest = readLocalManifest();
if not manifest then return end

local name = manifest.name or 'TrapOS';
local version = manifest.version or '?';
local branch = manifest.branch or 'master';
local isBeta = branch == 'next';

local hasColor = term.isColor and term.isColor();
local previousColor;

if hasColor then
  previousColor = term.getTextColor();
  if isBeta then
    term.setTextColor(colors.orange);
  else
    term.setTextColor(colors.lime);
  end
end

if isBeta then
  print(name .. ' v' .. version .. ' [BETA]');
else
  print(name .. ' v' .. version);
end

if hasColor and previousColor then
  term.setTextColor(previousColor);
end

print();