/**
 *   npm run user create     a short wizard: choose Admin or User
 *   npm run user list       show every account
 *
 */
import { createInterface } from 'node:readline';
import { Cancelled, createWizard, listLines, type Io } from '../src/cli/userWizard';
import { loadConfig } from '../src/config';
import { openDb } from '../src/db';
import { runMigrations } from '../src/db/migrate';

function makeIo(): { io: Io; close: () => void } {
  const rl = createInterface({ input: process.stdin, output: process.stdout });
  const queue: string[] = [];
  let waiting: ((line: string | null) => void) | null = null;
  let ended = false;

  rl.on('line', (line) => {
    if (waiting) {
      const w = waiting;
      waiting = null;
      w(line);
    } else {
      queue.push(line);
    }
  });
  rl.on('close', () => {
    ended = true;
    if (waiting) {
      const w = waiting;
      waiting = null;
      w(null);
    }
  });

  const io: Io = {
    async ask(question) {
      rl.setPrompt(question);
      rl.prompt();
      const line = queue.length > 0 ? queue.shift()! : ended ? null : await new Promise<string | null>((r) => (waiting = r));
      if (line === null) throw new Cancelled();
      return line.trim();
    },
    say(line = '') {
      console.log(line);
    },
  };
  return { io, close: () => rl.close() };
}

async function main(): Promise<number> {
  const command = process.argv[2];
  if (command !== 'create' && command !== 'list') {
    console.log('usage:');
    console.log('  npm run user create    create an admin or a user (a short wizard)');
    console.log('  npm run user list      show every account');
    return command ? 1 : 0;
  }

  const config = loadConfig();
  const db = openDb(config.dbPath);
  runMigrations(db);

  try {
    if (command === 'list') {
      for (const line of listLines(db)) console.log(line);
      return 0;
    }
    const { io, close } = makeIo();
    try {
      return await createWizard(db, io, config.defaultCountryCode);
    } finally {
      close();
    }
  } finally {
    db.close();
  }
}

main().then(
  (code) => process.exit(code),
  (err) => {
    console.error(String(err));
    process.exit(1);
  },
);