import { PAIR as MSSQL_PAIR } from '../../providers/mssql/queries/posterminal.js';
import { PAIR as SQLITE_PAIR } from '../../providers/sqlite3/queries/posterminal.js';
import makeRunner from '../runner.js';

export default function pair(provider) {
  const sql = provider?.dialect === 'sqlite3' ? SQLITE_PAIR : MSSQL_PAIR;

  /**
   * Completes POS device pairing for a terminal.
   *
   * @param {number} id - The posterminal id.
   * @param {object} input
   * @param {string} input.token - The auth token for the paired device.
   * @param {string} [input.clientserial] - The client name or serial identifier.
   * @param {string} [input.pairedAt] - Timestamp when paired.
   * @param {object} [tx] - Optional transaction to run within.
   * @returns {Promise<{id: number, token: string, clientserial: string|null, pairedAt: string|null}>}
   */
  return async (id, { token, clientserial, pairedAt }, tx) => {
    await makeRunner(provider, tx).query(sql, {
      id,
      token,
      clientserial: clientserial ?? null,
      pairedAt: pairedAt ?? null,
    });

    return {
      id,
      token,
      clientserial: clientserial ?? null,
      pairedAt: pairedAt ?? null,
    };
  };
}