Handlers for server and client events.

server-side-events

Server-Side Events

The following events are triggered by the rendered form:

• "update_changeset" - Form data has changed.
• "start_registration" - The user wants to create a new account.
• "start_authentication" - The user wants to sign in as an existing user.

While the update_changeset event handler extracts data from the params argument, start_registration and start_authentication ignore the params argument, pulling state from the socket assigns instead.

client-side-events

Client-Side Events

WebAuthnLiveComponent uses a Javascript (JS) hook to interact with the client-side WebAuthn API.

The following events are triggered by the WebAuthn JS hook:

• "webauthn_supported" - The JS hook as reported whether webauthn is supported.
• "user_token" - A token stored in the client's sessionStorage.
• "register_attestation" - A WebAuthn registration attestation created by the client.
• "authenticate_attestation" - A WebAuthn authentication attestation created by the client.

Ensure required assigns are present, falling back to default values where necessary.

Render the WebAuthn form.

update/2 is used here to catch the found_user assign once it's placed by the parent LiveView.