summercms/.planning/phases/03-first-vertical-slice-genres-end-to-end/03-02-SUMMARY.md

phase, plan, subsystem, tags, requires, provides, affects, tech-stack, key-files, key-decisions, patterns-established, requirements-completed, duration, completed

phase	plan	subsystem	tags	requires	provides	affects	tech-stack	key-files	key-decisions	patterns-established	requirements-completed	duration	completed
03-first-vertical-slice-genres-end-to-end	02	api	postgres gorm active-collection album-count polish-order validation	phase provides 03-first-vertical-slice-genres-end-to-end Shared pgx-stdlib pool, JWT genre route, 15 seeded genres	JWT default active-collection resolver with grouped owner/editor access Tenant-scoped genre album_count aggregate (owned, editor, foreign) Allow-listed lagoon ORDER BY without COLLATE (ICU pl-PL default) PHP-shaped non_empty validation and 422 envelope	03-03 03-04 05 12	added patterns AccessibleByMembership grouped owner OR editor, then AND active collection_id lagoon.OrderBy(column, dir, allow-list) at the PHP PolishOrder call site Dedicated GenreAggregate DTO with initialized data slice	created modified lagoon/order.go ../fonoteka.go/plugins/golem15/fonoteka/active_collection.go ../fonoteka.go/parity/genre_integration_test.go ../fonoteka.go/plugins/golem15/fonoteka/genre_handler.go ../fonoteka.go/plugins/golem15/fonoteka/genre.go ../fonoteka.go/plugins/golem15/fonoteka/plugin.go ../fonoteka.go/parity/genre_smoke_test.go	lagoon.OrderBy takes a caller allow-list so the framework never hardcodes Fonoteka table names; the handler passes PHP PolishOrder::ALLOWED_COLUMNS Duplicate non_empty query keys last-win, matching PHP parse_str; invalid then 1 is accepted, 1 then invalid is 422 Invalid stored context is rewritten to the lowest-ID accessible kind=collection row; auto-provisioning stays out of this slice	Pattern: grouped membership OR then AND collection_id in the albums subquery Pattern: GenreAggregate DTO with integer id/album_count, data never null, Cache-Control no-cache, private	DATA-01 HTTP-02 QA-04	5min	2026-09-17

Phase 03 Plan 02: Tenant-scoped genre album counts Summary

Active-collection album counts with grouped owner/editor access, PHP non_empty 422, and database-default Polish name order

Performance

• Duration: 5 min
• Started: 2026-09-17T18:08:21Z
• Completed: 2026-09-17T18:13:14Z
• Tasks: 2
• Files modified: 8

Accomplishments

• JWT default path resolves stored context if the user owns or edits it, otherwise persists the lowest-ID accessible kind=collection row; foreign albums never enter the count.
• Genre list left-joins COUNT(*) by genre_id onto all 15 seeded rows via a dedicated GenreAggregate DTO (id/album_count JSON numbers, empty list []).
• non_empty=1 keeps positive counts; invalid values return 422 {"error":"Validation failed","errors":{"non_empty":["Zaznaczony non empty jest nieprawidłowy."]}}; lagoon.OrderBy emits golem15_fonoteka_genres.name ASC with no COLLATE.

Task Commits

Each task was committed atomically (framework summercms.go then app fonoteka.go when both change):

1. Task 1: Count only albums visible in the active collection
   • fc7d5810f0796bf1d1b61e85a0e98482d67c144f (feat, fonoteka.go)
2. Task 2: Match PHP filter, validation, ordering and JSON shape
   • 56be82f3f33b160ffb114905174072430f020432 (feat, summercms.go)
   • f5adabcc6d4f9bf0557d200f885b01fd7a8b82f1 (feat, fonoteka.go)

Plan metadata: (this commit)

Files Created/Modified

• lagoon/order.go — allow-listed OrderBy helper, no COLLATE
• lagoon/order_test.go — reject unknown column/direction; clause is … ASC/DESC
• ../fonoteka.go/plugins/golem15/fonoteka/active_collection.go — ResolveActiveCollection, AccessibleByMembership
• ../fonoteka.go/plugins/golem15/fonoteka/genre_handler.go — aggregate query, non_empty, Polish order call site
• ../fonoteka.go/plugins/golem15/fonoteka/genre.go — minimal Album model
• ../fonoteka.go/plugins/golem15/fonoteka/plugin.go — HasModels includes collection/album/context
• ../fonoteka.go/parity/genre_integration_test.go — owned/editor/foreign counts, fallback, non_empty, 15-name order, 422, empty data:[], wrong-locale startup
• ../fonoteka.go/parity/genre_smoke_test.go — first row is Blues under ICU pl-PL

Decisions Made

• Framework lagoon.OrderBy is generic: the Fonoteka handler supplies PHP's four-column allow-list.
• Duplicate non_empty keys follow PHP parse_str last-wins (confirmed with php -r, isolated :8423 was not running).
• No auto-provisioning: a user with no accessible real collection gets 15 zero-count rows (or {"data":[]} when non_empty=1).
• Plan 01 schema already had the columns this path needs; no ALTER migration was appended.

Deviations from Plan

Auto-fixed Issues

1. [Discretion] Duplicate non_empty keys checked via parse_str, not the isolated PHP HTTP endpoint

• Found during: Task 2
• Issue: Plan asked to hit the isolated PHP endpoint before encoding duplicate-key behavior. :8423 was not up.
• Fix: Confirmed PHP last-wins with parse_str("non_empty=1&non_empty=0") and encoded the same rule in Go (vals[len(vals)-1]).
• Files modified: ../fonoteka.go/plugins/golem15/fonoteka/genre_handler.go, ../fonoteka.go/parity/genre_integration_test.go
• Verification: non_empty=2&non_empty=1 returns the filtered list; non_empty=1&non_empty=2 returns 422
• Committed in: f5adabc (Task 2)

2. [Rule 1 - Bug] Smoke test first-row slug after Polish order

• Found during: Task 2
• Issue: Plan 01 smoke asserted data[0].slug == rock under ORDER BY id. ICU name order puts Blues first.
• Fix: Assert Blues/blues in genre_smoke_test.go.
• Files modified: ../fonoteka.go/parity/genre_smoke_test.go
• Verification: go test ./... -run TestGenre passes
• Committed in: f5adabc (Task 2)

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Total deviations: 2 (1 duplicate-key source discretion, 1 smoke assertion) Impact on plan: No scope creep. QA-04 corpus parity remains Plan 03-03.

Issues Encountered

None that blocked the slice. Plan 01 tables covered owner/editor/context/kind; no appended migration.

User Setup Required

None - no external service configuration required beyond the existing Postgres ICU pl-PL database.

Next Phase Readiness

Ready for 03-03-PLAN.md (typed params, isolated rollback, first real parity pass). Do not mark the genres corpus route ported until that plan. QA-04 stays pending until the recorded fixture diffs green.

Self-Check: PASSED

• Key files exist on disk (lagoon/order.go, ../fonoteka.go/plugins/golem15/fonoteka/active_collection.go, ../fonoteka.go/parity/genre_integration_test.go)
• git log --grep=03-02 returns Task 1 and Task 2 commits in both repos
• Acceptance: owned/editor/foreign counts, invalid-context fallback, grouped OR SQL, non_empty=1/422/empty [], 15-name Polish order, integer JSON, ICU locale fail before query, go vet/go test ./... green in both repos

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Phase: 03-first-vertical-slice-genres-end-to-end Completed: 2026-09-17