import { newEnforcer } from 'casbin';
import { Client } from 'pg';
import { BasicAdapter } from 'casbin-basic-adapter';

async function myFunction() {
  // Initialize a Basic adapter and use it in a Node-Casbin enforcer:
  // The adapter can not automatically create database.
  // But the adapter will automatically and use the table named "casbin_rule".
  const a = await BasicAdapter.newAdapter('pg',
    new Client({
      user: 'postgres',
      database: 'postgres',
      password: 'postgres',
    }));

  const e = await newEnforcer('examples/rbac_model.conf', a);

  // Check the permission.
  e.enforce('alice', 'data1', 'read');

  // Modify the policy.
  // await e.addPolicy(...);
  // await e.removePolicy(...);

  // Save the policy back to DB.
  await e.savePolicy();