julien b7093d61de
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feat(portal-bff): msal confidential client provider in AuthModule (#104)
Second step of ADR-0009 wiring. AuthModule now exposes the
`@azure/msal-node` confidential client alongside the parsed Entra
config — the building block the upcoming OIDC routes inject to issue
the auth-code URL, exchange the callback code for tokens, and
acquire downstream tokens on behalf of the user.

What lands:

- `@azure/msal-node` added as a direct dependency (^5.2.1).
- `apps/portal-bff/src/auth/msal-client.token.ts` — `MSAL_CLIENT`
  string token + `ConfidentialClientApplication` type re-export.
  Mirrors the `ENTRA_CONFIG` token shape from PR #102.
- AuthModule grows a factory provider for `MSAL_CLIENT`:
  - Injects `ENTRA_CONFIG` + nestjs-pino `Logger`.
  - Builds a `ConfidentialClientApplication` with `clientId`,
    `authority`, `clientSecret` from the parsed config.
  - Wires `system.loggerOptions.loggerCallback` to forward MSAL's
    internal log lines into the Pino stream (per ADR-0012) — Error
    → logger.error, Warning → logger.warn, Verbose / Trace →
    logger.debug, Info → logger.log. PII logging is disabled by
    default so tokens / user identifiers never leak into our
    structured log records.
  - Sets MSAL's `logLevel` to Info — Pino's own threshold
    re-filters from there.
  - All MSAL log lines carry the `msal` Pino context for easy
    isolation in log queries.
- `AuthModule.exports` extended to include `MSAL_CLIENT`.

Verification:

- `nx run-many -t lint test build --projects=portal-bff` — green.
- 30/30 specs (was 29; +1 covering MSAL client construction).
- New spec imports `nestjs-pino`'s `LoggerModule.forRoot({ pinoHttp:
  { level: 'silent' } })` to provide the same Logger the production
  app supplies via `ObservabilityModule`, without flooding test
  stdout. Two tests assert the provider tree resolves correctly
  (ENTRA_CONFIG + MSAL_CLIENT) and one re-checks the missing-env
  failure mode still propagates through the new factory.

Construction is cheap — MSAL Node defers authority discovery to the
first auth call — so the client is built eagerly at module init.
The factory is injection-only; no MSAL methods get invoked yet.
Routes land in the next PR.

<!--
PR title format — becomes the squash-merge subject on main, validated by commitlint.

  <type>(<scope>): <short description>

Examples:
  feat(portal-shell): add user-preferences panel skeleton
  fix(portal-bff): correct env var bracket access
  docs(decisions): add ADR-0018 for security baseline
  chore(deps): bump @nx/* to 22.7.2

Imperative mood, lowercase, no trailing period, target ≤ 70 chars.
See docs/development.md §5 for the full convention (types, scopes).
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## Summary

## Motivation

## Implementation notes

## Verification

- [ ] `pnpm ci:check` green locally
- [ ] `pnpm ci:audit` green (or pre-existing drift acknowledged)
- [ ] Tested manually:
- [ ] Architecture diagram updated (if `docs/architecture.md` was affected)
- [ ] ADR amended or added (if a decision changed)

## Related

---------

Co-authored-by: Julien Gautier <julien.gautier@apf.asso.fr>
Reviewed-on: #104
2026-05-12 10:34:23 +02:00

Documentation index

This is the entry point to all project documentation. It is maintained automatically: any addition, rename, or removal of a .md file under docs/ must be reflected here in the same change.

Conventions

  • Documentation is written in English.
  • One topic per file. Group related files into a folder when there are three or more.
  • Cross-reference with relative links so they keep working in GitHub, IDEs, and exported sites.
  • For architectural decisions, do not add them here — they belong in decisions/ as MADR 4.0.0 ADRs.

Sections

Daily development

  • development.md — repo layout, prerequisites, initial setup, daily commands, observability dev-loop (Jaeger UI, log ↔ trace correlation), dependency updates (Renovate), conventional commit cycle. Day-to-day reference for working on the project.

Architecture

  • architecture.md — cross-cutting Mermaid diagrams: C4 system context, C4 containers, Nx module boundaries, CI/CD pipeline. Single-decision diagrams (auth sequence, ERD, etc.) live inline in their ADR.

Onboarding & environment

Setup guides for new contributors:

Operations & runbooks

Empty — to be populated when we deploy.

Security, performance, accessibility

Empty — placeholders to be filled with rationale docs alongside their corresponding ADRs.

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