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Interactive Cognito MFA/challenge support at loginΒ #22

Description

@ctopherwilliams

Problem / motivation

Traeger.login() (traeger_client.py) only implements the USER_PASSWORD_AUTH Cognito flow. Accounts with MFA enabled on the Traeger app account fail at the initial login with no clear path forward β€” refresh()/reauth() already handle long-running renewal fine, but there's no way to complete a first login that requires an MFA challenge response.

Proposed solution

  • Detect a Cognito challenge response (e.g. ChallengeName in the InitiateAuth response, such as SMS_MFA or SOFTWARE_TOKEN_MFA) instead of assuming AuthenticationResult is always present.
  • Prompt interactively for the code (CLI input(), matching the project's terminal-native style β€” no new UI surface) and complete the flow via Cognito's RespondToAuthChallenge API.
  • Keep this opt-in/graceful: accounts without MFA must see zero behavior change.

Alternatives considered

Documenting MFA as unsupported (current state, in SECURITY.md's "Known limitations") β€” acceptable as a stopgap, but excludes anyone who (reasonably) has MFA on their Traeger account.

Activity

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