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julien ee51efb688 feat(portal): /api/me/capabilities + cross-app menu links + real role label (#151)
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## Summary

PR 3 of 3 — final piece of the user-menu / profile / cross-app chantier. Closes the loop with the BFF capabilities endpoint, symmetric cross-app entries in both user menus, and a real role label in place of the hardcoded "Anonymous" widget on the portal-shell sidebar.

| PR | Périmètre |
| --- | --- |
| PR 1  | Shared `UserMenu` dropdown + integration. |
| PR 2  | `/profile` pages on both apps. |
| **PR 3 (this one)** | `GET /api/me/capabilities` + real sidebar role label + cross-app menu entries. |

## What lands

### BFF — `GET /api/me/capabilities`

New [`MeModule`](apps/portal-bff/src/me/me.module.ts) wiring a single endpoint:

```ts
GET /api/me/capabilities → { canAccessAdmin: boolean }
```

Resolved against the user-portal session ([`portal_session`](apps/portal-bff/src/me/me.controller.ts) — the path-routed session middleware in `main.ts` already maps `/api/me/*` to that session). Returns 401 if no session is present, consistent with `/api/auth/me`. 5 specs cover the four state combinations + a regression-fence asserting the curated view never leaks the raw `roles` array.

### ADR-0009 amendment

[`docs/decisions/0009-auth-flow-oidc-pkce-msal-node.md`](docs/decisions/0009-auth-flow-oidc-pkce-msal-node.md) — new **"Curated public view"** section codifies the design stance the user picked when we agreed the staging:

> The `/auth/me` payload exposes a deliberately narrow projection of the session: `oid`, `tid`, `username`, `displayName`. **The raw `roles` claim is _not_ part of `/auth/me`** — it stays server-side […]. The SPA derives binary UX hints from a dedicated companion endpoint […]. The shape is intentional: the SPA can never reconstruct the raw role names from the curated view, so introducing additional internal-only roles […] does not widen the SPA-side surface.

The routes table grows a row for `/me/capabilities`.

### Portal-shell — capabilities-driven UI

- **New service** [`CapabilitiesService`](apps/portal-shell/src/app/services/capabilities.service.ts) (app-local, not in `feature-auth` — the admin app has its own roles channel via `/api/admin/auth/me` and would never use this). Signals: `capabilities`, `canAccessAdmin`. Fires `GET /me/capabilities` reactively via an `effect` that watches `auth.currentUser()`. Anonymous sessions short-circuit to the all-false default without a fetch — the BFF would 401 anyway.
- **Header** ([`header.ts`](apps/portal-shell/src/app/components/header/header.ts)) — `userMenuItems` is now a `computed`. Profile + Settings stay unconditional; **"Open Portal Admin"** appears only when `canAccessAdmin()` flips true, with `href = environment.adminAppUrl`. Per ADR-0020 the two SPAs live on distinct origins, so this is a raw cross-origin anchor, not a routerLink.
- **Sidebar** ([`sidebar.ts`](apps/portal-shell/src/app/components/sidebar/sidebar.ts) + [`sidebar.html`](apps/portal-shell/src/app/components/sidebar/sidebar.html)) — the hardcoded `Role: Anonymous` widget is replaced by a derived computed:
  - `Anonymous` when no session.
  - `Administrator` when `canAccessAdmin()` is true.
  - `User` otherwise (signed-in, no admin).

  The aria-label gains a `role` placeholder so screen readers hear the live value.

### Portal-admin — symmetric cross-app entry

- **Header** ([`header.ts`](apps/portal-admin/src/app/components/header/header.ts)) — adds an unconditional `Open Portal Shell` row pointing at `environment.shellAppUrl`. Anyone able to reach portal-admin can reach portal-shell, so no capabilities check needed; admins always benefit from a one-click jump back to the end-user surface.

### Environments

`adminAppUrl` and `shellAppUrl` added to the respective [`environment.ts`](apps/portal-shell/src/environments/environment.ts) files (dev defaults: `:4300` for admin, `:4200` for shell). Per-env siblings (staging / prod) will override the host once they exist, per ADR-0018.

### i18n

| Key | EN source | FR target |
| --- | --- | --- |
| `header.userMenu.openAdmin` | Open Portal Admin | Ouvrir Administration APF Portal |
| `sidebar.role.administrator` | Administrator | Administrateur |
| `sidebar.role.user` | User | Utilisateur |
| `sidebar.role.aria` | reshaped with `{role}` placeholder | reshaped likewise |

Admin-side strings stay in English source per ADR-0020.

## Notes for the reviewer

- **Why `CapabilitiesService` in the app, not in `feature-auth`?** Only `portal-shell` will ever call `/api/me/capabilities` — the admin SPA hits `/api/admin/auth/me` which already returns `roles`. Putting the service in `feature-auth` would publish a tree-shakable `providedIn: 'root'` injectable that ships in both bundles. Keeping it app-local makes the boundary explicit.
- **Why a `computed` for `userMenuItems` rather than mutating an array in an `effect`?** Signals + computed = single source of truth. The shared `UserMenu` re-renders automatically when the items list changes (whenever capabilities flips). Less ceremony than maintaining a `WritableSignal<UserMenuItem[]>`.
- **Why the `flushPendingEffects` test helper?** Zoneless apps rely on the signals scheduler to dispatch `effect()` callbacks via micro-task scheduling. `fixture.detectChanges() + whenStable()` once is not enough: the chain is `meReq.flush()` → `_state.set()` → effect scheduled → effect fires → `http.get()` queued. The helper loops 4× to give the scheduler enough rounds to settle before `expectOne(CAPABILITIES_URL)` looks up the request.
- **Why no test for the dev URL values?** `environment.ts` is config that gets swapped at build time per ADR-0018; the values themselves are environmental. Asserting the dev value in a test would lock in a port (4200/4300) that's separately configured in `project.json`.

## Test plan

- [x] `pnpm nx test portal-bff` — **401 specs pass** (was 396, +5 for `MeController`).
- [x] `pnpm nx test portal-shell` — **40 specs pass** (was 35, +5: 3 sidebar role-label + 2 header admin-link).
- [x] `pnpm nx run-many -t lint test build --projects=portal-shell,portal-admin,portal-bff,shared-ui,shared-state,feature-auth` — 18/18 tasks green, including the i18n-strict `portal-shell:build:production`.
- [ ] Manual smoke (with a `Portal.Admin`-assigned account):
  - Sign in on portal-shell → sidebar reads `Role: Administrator`, user menu lists `Open Portal Admin` at the bottom (right above the Sign-out separator), clicking the link opens `localhost:4300`.
  - Sign in on portal-admin → user menu lists `Open Portal Shell`, clicking opens `localhost:4200`.
  - Sign in on portal-shell with a non-admin account → sidebar reads `Role: User`, `Open Portal Admin` is absent.
  - Sign out → sidebar reads `Role: Anonymous`, the menu collapses to its anonymous-state Sign-in button.

## What's next

Chantier closed. The user-menu shape is now stable; further entries (notifications inbox, theme override, locale switcher inside the menu rather than the footer) plug into the existing `items` API without re-shaping the component.

---------

Co-authored-by: Julien Gautier <julien.gautier@apf.asso.fr>
Reviewed-on: #151
2026-05-15 16:11:26 +02:00
Julien Gautier 4b8d0789b1 docs: add inline OIDC sequence diagram to ADR-0009
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Render the OAuth 2.0 Authorization Code + PKCE flow as a Mermaid
sequence diagram at the top of the Decision Outcome section. Five
participants (user, SPA, BFF, Entra, Redis), thirteen autonumbered
steps covering the authorize redirect, the user-side authentication
(with the Conditional Access MFA enforcement annotated), the
callback, the state verification, the token exchange, the id_token
validation pipeline (signature, iss against the tenant allowlist,
aud, exp/nbf, amr sanity-check, audience-claim mapping), the
encrypted session write to Redis, and the cookie set.

Inline rather than in docs/architecture.md per the convention stated
at the top of architecture.md: cross-cutting diagrams live in the
architecture file, single-decision diagrams live inside the ADR they
visualise. ADR-0009 IS the auth flow decision; the sequence diagram
belongs here.

Cross-references the related ADRs (0010 sessions, 0011 MFA, 0008
audience model) so the diagram reads as the integration point of
the security stack rather than as an isolated picture.
2026-04-30 21:02:08 +02:00
Julien Gautier 0e58e32d29 chore: relocate ADRs from decisions/ to docs/decisions/ to consolidate documentation
Move the ADR folder under docs/ alongside the rest of the project
documentation. Convention (flat folder, globally-sequential 4-digit
numbering, tags-based categorization, MADR 4.0.0 format) is unchanged
- only the path moved.

- git mv decisions docs/decisions preserves history for all 18 ADRs +
  README + template (19 files renamed in this commit).
- ADR-0001 amended in-place with a dated note documenting the
  relocation. Status remains 'accepted' - the location detail
  changed, the decision did not.
- All cross-references updated:
  - CLAUDE.md (~17 ADR links + 3 mentions of decisions/ in the Project
    rules section)
  - docs/README.md (now references decisions/ as a sibling under docs/)
  - docs/setup/03-angular-nx-monorepo.md (paths shortened from
    ../../decisions/ to ../decisions/, since setup/ and decisions/ are
    now both inside docs/)
  - docs/decisions/0003 ../CLAUDE.md adjusted to ../../CLAUDE.md
    (one extra level of nesting)
  - docs/decisions/template.md mention of the README path
  - notes/asvs-level-decision-briefing-rssi.md mention of the index

Sanity verified: every ADR link in CLAUDE.md, docs/setup/03, and
docs/decisions/0001 resolves to an existing file. pnpm nx run-many
-t lint passes on 8 projects.
2026-04-30 18:57:59 +02:00