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Author SHA1 Message Date
senke
44349ec444 feat(search): faceted filters (genre/key/BPM/year) + FacetSidebar UI (W4 Day 18)
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Backend
- services/search_service.go : new SearchFilters struct (Genre,
  MusicalKey, BPMMin, BPMMax, YearFrom, YearTo) + appendTrackFacets
  helper that composes additional AND clauses onto the existing FTS
  WHERE condition. Filters apply ONLY to the track query — users +
  playlists ignore them silently (no relevant columns).
- handlers/search_handlers.go : new parseSearchFilters reads + bounds-
  checks query params (BPM in [1,999], year in [1900,2100], min<=max).
  Search() now passes filters into the service ; OTel span attribute
  search.filtered surfaces whether facets were applied.
- elasticsearch/search_service.go : signature updated to match the
  interface ; ES path doesn't translate facets yet (different filter
  DSL needed) — logs a warning when facets arrive on this path.
- handlers/search_handlers_test.go : MockSearchService.Search updated
  + 4 mock.On call sites pass mock.Anything for the new filters arg.

Frontend
- services/api/search.ts : new SearchFacets shape ; searchApi.search
  accepts an opts.facets bag. When non-empty, bypasses orval's typed
  getSearch (its GetSearchParams pre-dates the new query params) and
  uses apiClient.get directly with snake_case keys matching the
  backend's parseSearchFilters().
- features/search/components/FacetSidebar.tsx (new) : sidebar with
  genre + musical_key inputs (datalist suggestions), BPM min/max
  pair, year from/to pair. Stateless ; SearchPage owns state.
  data-testids on every control for E2E.
- features/search/components/search-page/useSearchPage.ts : facets
  state stored in URL (genre, musical_key, bpm_min, bpm_max,
  year_from, year_to) so deep links reproduce the result set.
  300 ms debounce on facet changes.
- features/search/components/search-page/SearchPage.tsx : layout
  switches to a 2-column grid (sidebar + results) when query is
  non-empty ; discovery view keeps the full width when empty.

Collateral cleanup
- internal/api/routes_users.go : removed unused strconv + time
  imports that were blocking the build (pre-existing dead imports
  surfaced by the SearchServiceInterface signature change).

E2E
- tests/e2e/32-faceted-search.spec.ts : 4 tests. (36) backend rejects
  bpm_min > bpm_max with 400. (37) out-of-range BPM rejected. (38)
  valid range returns 200 with a tracks array. (39) UI — typing in
  the sidebar updates URL query params within the 300 ms debounce.

Acceptance (Day 18) : promtool not relevant ; backend test suite
green for handlers + services + api ; TS strict pass ; E2E spec
covers the gates the roadmap acceptance asked for. The 'rock + BPM
120-130 = restricted results' assertion needs seed data with measurable
BPM (none today) — flagged in the spec as a follow-up to un-skip
once seed BPM data lands.

W4 progress : Day 16 done · Day 17 done · Day 18 done · Day 19
(HAProxy sticky WS) pending · Day 20 (k6 nightly) pending.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-29 10:33:35 +02:00