import { readConfig, mutateConfig, resolveUser, userLabel } from '../config.js';

// tangy user list
export async function userListCommand() {
  const config = await readConfig();
  const entries = Object.entries(config.users);
  if (entries.length === 0) {
    console.log('No users are logged in. Run `tangy login <handle>` first.');
    return;
  }
  for (const [did, u] of entries) {
    const marker = did === config.defaultUser ? '*' : ' ';
    console.log(`${marker} ${u.handle || '(unknown handle)'} (${did})`);
    console.log(`    root: ${u.root ?? '(unset)'}`);
  }
  if (!config.defaultUser && entries.length > 1) {
    console.log(
      '\nNo default user set — pass -u <user> or run `tangy user default <user>`.',
    );
  }
}

// tangy user default [user] — show the default user, or set it when given one.
export async function userDefaultCommand(userArg, opts = {}) {
  const selector = userArg ?? opts.user;
  const config = await readConfig();

  if (!selector) {
    if (config.defaultUser && config.users[config.defaultUser]) {
      const u = config.users[config.defaultUser];
      console.log(`${u.handle || config.defaultUser} (${config.defaultUser})`);
    } else {
      console.log('No default user set.');
    }
    return;
  }

  const user = resolveUser(config, selector);
  await mutateConfig((c) => {
    c.defaultUser = user.did;
  });
  console.log(`✓ Default user is now ${userLabel(user)}.`);
}