local _VERSION = '0.2.0';

local createAiHelloWorld = require('/apis/libaihelloworld');

local args = table.pack(...);
local command = args[1];

local function printUsage()
  print('ai-helloworld usage:');
  print();
  print('  ai-helloworld');
  print('  ai-helloworld --new');
  print('  ai-helloworld --sessions');
  print('  ai-helloworld --version');
  print('  ai-helloworld --help');
  print();
  print('settings required:');
  print('  opencc.server_url');
  print();
  print('settings optional:');
  print('  opencc.username   (default: opencode)');
  print('  opencc.password   (Basic Auth password)');
  print('  opencc.session_id (auto-managed)');
end

if command == '--version' or command == '-version' or command == 'version' then
  print('ai-helloworld v' .. _VERSION);
  return;
end

if command == '--help' or command == '-help' or command == 'help' then
  printUsage();
  return;
end

local ai = createAiHelloWorld();

if command == '--new' then
  ai.clearSession();
elseif command == '--sessions' then
  local ok, result = ai.listSessions();
  if not ok then
    print(result);
    return;
  end
  if #result == 0 then
    print('no sessions');
  else
    for _, s in ipairs(result) do
      print((s.id or '?') .. '  ' .. (s.title or '(untitled)'));
    end
  end
  return;
elseif command ~= nil and command ~= '' then
  printUsage();
  return;
end

local ok, result = ai.askHello();
if not ok then
  print(result);
  return;
end

print(result.reply);