import * as plugins from './plugins.js';

export const normalizeFileStem = (valueArg: string) => {
  return valueArg
    .trim()
    .toLowerCase()
    .replace(/[^a-z0-9]+/g, '-')
    .replace(/^-+|-+$/g, '') || 'new-item';
};

export const getHelpText = () => `smarthome.exchange CLI

Usage:
  shx help
  shx init [name]
  shx open
  shx agent new <name>
  shx automation new <name>
`;

export const runCli = async (argvArg = process.argv.slice(2)) => {
  const [command, subcommand, nameArg] = argvArg;

  if (!command || command === 'help' || command === '--help' || command === '-h') {
    console.log(getHelpText());
    return;
  }

  if (command === 'init') {
    await initHome(subcommand || 'birch-lane');
    return;
  }

  if (command === 'open') {
    console.log('Open http://localhost:8080 after starting @smarthome.exchange/hub.');
    return;
  }

  if (command === 'agent' && subcommand === 'new') {
    await createAgent(nameArg || 'custom-agent');
    return;
  }

  if (command === 'automation' && subcommand === 'new') {
    await createAutomation(nameArg || 'new-automation');
    return;
  }

  throw new Error(`Unknown command: ${argvArg.join(' ')}`);
};

export const initHome = async (nameArg: string) => {
  const homeName = normalizeFileStem(nameArg);
  await plugins.fs.mkdir('.shx/agents', { recursive: true });
  await plugins.fs.mkdir('.shx/automations', { recursive: true });
  await plugins.fs.mkdir('.shx/dashboards', { recursive: true });
  await plugins.fs.writeFile(
    '.shx/config.json',
    `${JSON.stringify({ name: homeName, createdAt: new Date().toISOString() }, null, 2)}\n`
  );
  console.log(`Initialized .shx home: ${homeName}`);
};

export const createAgent = async (nameArg: string) => {
  const fileStem = normalizeFileStem(nameArg);
  const targetPath = plugins.path.join('.shx', 'agents', `${fileStem}.ts`);
  await plugins.fs.mkdir(plugins.path.dirname(targetPath), { recursive: true });
  await plugins.fs.writeFile(
    targetPath,
    `import type { data } from '@smarthome.exchange/interfaces';\n\nexport const agent: data.IAgentDefinition = {\n  id: '${fileStem}',\n  name: '${nameArg}',\n  role: 'Custom household agent',\n  glyph: 'custom',\n  color: '#60a5fa',\n  mode: 'ask',\n  model: 'local:small',\n  scopes: ['*.read'],\n  systemPrompt: 'Describe the agent behavior here.',\n  enabled: true,\n};\n`
  );
  console.log(`Created ${targetPath}`);
};

export const createAutomation = async (nameArg: string) => {
  const fileStem = normalizeFileStem(nameArg);
  const targetPath = plugins.path.join('.shx', 'automations', `${fileStem}.ts`);
  await plugins.fs.mkdir(plugins.path.dirname(targetPath), { recursive: true });
  await plugins.fs.writeFile(
    targetPath,
    `import { on, devices } from '@smarthome.exchange/sdk';\n\non({ id: 'manual:${fileStem}', kind: 'manual', expression: '${fileStem}' }, async () => {\n  await devices.read('climate.office');\n});\n`
  );
  console.log(`Created ${targetPath}`);
};

if (process.argv[1]?.endsWith('/cli.js') || process.argv[1]?.endsWith('\\cli.js')) {
  runCli().catch((errorArg) => {
    console.error(errorArg.message);
    process.exit(1);
  });
}