47 lines
1.7 KiB
Markdown
47 lines
1.7 KiB
Markdown
# Top Bar Integration
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## Purpose
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`TopBar` renders app-shell search, campus/role badges, notifications, and the profile menu (which delegates sign-out to the auth session) through the three-layer frontend architecture.
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```text
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View -> Business Logic -> API/Data Access -> Backend
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```
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TopBar does not own product content records. It owns shell UI state and delegates auth actions to the auth session.
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## Frontend Layers
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View:
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- `frontend/src/components/frameworks/TopBar.tsx`
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- `frontend/src/components/top-bar/TopBarView.tsx`
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- `frontend/src/components/top-bar/TopBarSearch.tsx`
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- `frontend/src/components/top-bar/TopBarBadges.tsx`
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- `frontend/src/components/top-bar/TopBarNotifications.tsx`
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- `frontend/src/components/top-bar/TopBarProfileMenu.tsx`
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Business logic:
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- `frontend/src/business/top-bar/hooks.ts`
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- `frontend/src/business/top-bar/selectors.ts`
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- `frontend/src/business/top-bar/types.ts`
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Shared config:
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- `frontend/src/shared/constants/topBar.ts`
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## Behavior
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- `TopBar.tsx` is a thin wrapper that reads auth session state and passes it into `useTopBarPage`.
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- `useTopBarPage` owns profile menu state, notifications menu state, search query state, and sign-out error state.
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- Selectors handle initials, campus label fallback, shared role labels, and unread notification count.
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- View components receive a prepared page model and do not call API/data access modules.
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- Profile and settings menu items are explicitly disabled until product workflows exist, instead of rendering silent no-op buttons.
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## Data Ownership Rules
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- Do not add notification seed data to frontend constants.
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- Keep TopBar constants limited to role badge classes and static menu labels.
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- Future persisted notifications should use a backend API and a dedicated business hook.
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