CallbackProvider mixin

Mixin for auth providers that handle custom callback flows.

Implement this mixin on custom providers (like Telegram) that don't follow standard OAuth or email flows. The handleCallback method will be called by the auth route dispatcher when the callback URL is accessed.

Example

class TelegramProvider extends AuthProvider with CallbackProvider {
  @override
  Future<CallbackResult> handleCallback(
    AuthContext ctx,
    Map<String, String> params,
  ) async {
    // Verify HMAC signature from Telegram
    final profile = verifyAndParseCallback(params);
    final user = mapProfile(profile);
    return CallbackResult.success(user, redirect: '/profile');
  }
}

Superclass constraints

• AuthProvider

Mixin applications

• TelegramProvider

Properties

hashCode → int

The hash code for this object.

no setter, inherited

id → String

Provider identifier used in callback routes.

final, inherited

name → String

Human-readable provider name.

final, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

type → AuthProviderType

Provider category.

final, inherited

Methods

authenticationMethodInventory(AuthStore store) → AuthAuthenticationMethodInventoryContributor?

Builds this provider's authoritative usable-method inventory.

inherited

handleCallback(AuthContext ctx, Map<String, String> params) → FutureOr<CallbackResult>

Handles the callback request from the external provider.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

redacted() → AuthProvider

Creates a provider metadata projection safe for events and audit logs.

inherited

toJson() → Map<String, dynamic>

Summary payload used by /auth/providers.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited