### Hapi Basic Authentication Setup

Source: https://github.com/hapijs/basic/blob/master/API.md

Demonstrates how to configure and use the @hapi/basic plugin for basic HTTP authentication in a hapi server. Includes user validation logic using Bcrypt for password comparison.

```javascript
const Bcrypt = require('bcrypt');
const Hapi = require('@hapi/hapi');

const users = {
    john: {
        username: 'john',
        password: '$2a$10$iqJSHD.BGr0E2IxQwYgJmeP3NvhPrXAeLSaGCj6IR/XU5QtjVu5Tm',   // 'secret'
        name: 'John Doe',
        id: '2133d32a'
    }
};

const validate = async (request, username, password, h) => {

    if (username === 'help') {
        return { response: h.redirect('https://hapijs.com/help') };     // custom response
    }

    const user = users[username];
    if (!user) {
        return { credentials: null, isValid: false };
    }

    const isValid = await Bcrypt.compare(password, user.password);
    const credentials = { id: user.id, name: user.name };

    return { isValid, credentials };
};

const main = async () => {

    const server = Hapi.server({ port: 4000 });

    await server.register(require('@hapi/basic'));

    server.auth.strategy('simple', 'basic', { validate });
    server.auth.default('simple');

    server.route({
        method: 'GET',
        path: '/',
        handler: function (request, h) {

            return 'welcome';
        }
    });

    await server.start();

    return server;
};

main()
.then((server) => console.log(`Server listening on ${server.info.uri}`))
.catch((err) => {

    console.error(err);
    process.exit(1);
});

```

--------------------------------

### Hapi Basic Authentication Scheme Options

Source: https://github.com/hapijs/basic/blob/master/API.md

Details the configuration options for the 'basic' authentication scheme in hapi, including the required `validate` function and optional parameters.

```APIDOC
'basic' Authentication Scheme Options:

Options:
  - validate: (required) a user lookup and password validation function.
    Signature: [async] function(request, username, password, h)
    Parameters:
      - request: The hapi request object.
      - username: The username received from the client.
      - password: The password received from the client.
      - h: The response toolkit.
    Returns: An object { isValid, credentials, response }
      - isValid: boolean - true if authentication is successful, false otherwise.
      - credentials: object - Passed back to the application in request.auth.credentials.
      - response: object (optional) - A takeover response (e.g., redirect).
    Note: Throwing an error from this function replaces the default Boom.unauthorized error.

  - allowEmptyUsername: (optional) boolean - if true, allows requests with an empty username. Defaults to false.

  - unauthorizedAttributes: (optional) object - Passed directly to Boom.unauthorized if no custom error is thrown. Useful for setting realm attribute in WWW-Authenticate header. Defaults to undefined.

```

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