Integration checkpoint for epic-email-password-login-auth-logic
epic-email-password-login-auth-logic-integration-task — Integration Task
Integration Purpose
Verify integration with dependent epics: epic-email-password-login-foundation
This integration checkpoint ensures proper coordination and compatibility between different epics. It verifies that all interfaces, data flows, and dependencies are correctly implemented before proceeding.
Integrates With Epics
Execution Context
Tier 2 - 518 tasks
Can start after Tier 1 completes
Handles integration between different epics or system components. Requires coordination across multiple development streams.
| Status | pending |
| Type | Integration |
| Estimated | 4h |
| Tier | 2 |
Supabase GoTrue returns HTTP error codes and string messages that may change between SDK versions. Incorrect or incomplete mapping could cause the wrong user-facing message to be shown (e.g., showing a generic error instead of a specific credential error), violating the plain-language feedback acceptance criteria and potentially exposing security-sensitive information.
Mitigation & Contingency
Mitigation: Pin the supabase_flutter SDK to a specific minor version in pubspec.yaml. Write integration tests that mock the Supabase HTTP layer and assert each error code maps to the correct domain exception. Document the mapping table as a constant in AuthService.
Contingency: If an unrecognized error code is received at runtime, catch it as an UnknownAuthException and display a generic safe message. Alert via crash reporting for triage and SDK update.
If the user taps the sign-in button multiple times rapidly, concurrent authentication requests could result in race conditions: duplicate network calls, out-of-order state emissions, or multiple session tokens being written to secure storage.
Mitigation & Contingency
Mitigation: Use bloc concurrency transformer (droppable or restartable) to ensure only one authentication event is processed at a time. The BLoC should guard against submission while in LoginLoading state.
Contingency: Add a UI-level disable on the submit button when loading state is active as a secondary guard independent of BLoC concurrency control.