local _VERSION = '0.1.0';

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 --version');
  print('  ai-helloworld --help');
  print();
  print('settings required:');
  print('  opencc.proxy_url');
  print('  opencc.proxy_token');
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 ~= nil and command ~= '' then
  printUsage();
  return;
end

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

print(result.reply);