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paliad/internal/handlers/submission_bases.go
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feat(submissions): Composer Slice A — base picker + read-only section list (m/paliad#141)
The first slice of the Submission generator v2 ("Composer") per the
design at docs/design-submission-generator-v2-2026-05-26.md §12 Slice A.
Ships the base concept + per-draft section seeding end-to-end with NO
change to the .docx render path — v1 export still works exactly as
today.

Schema (mig 146/147/148):
- paliad.submission_bases — catalog table; one row per template base
  (slug, firm, proceeding_family, label_de/en, gitea_path, section_spec
  jsonb, is_default_for[]). RLS: wide-open SELECT for authenticated
  users, mutations admin-only (handler-enforced, no RLS write paths).
  Seeded with 2 rows: hlc-letterhead → _firm-skeleton.docx; neutral →
  _skeleton.docx. Each section_spec carries the 10-section default
  (letterhead, caption, introduction, requests, facts, legal_argument,
  evidence, exhibits, closing, signature) with bilingual labels +
  bag-driven seed Markdown for caption/letterhead/signature.
- paliad.submission_drafts gains base_id (FK SET NULL, optional) +
  composer_meta jsonb (default '{}'). Purely additive; pre-Composer
  drafts keep base_id NULL → v1 fallback render path stays active.
- paliad.submission_sections — per-draft section rows (draft_id,
  section_key, order_index, kind ∈ {prose,requests,evidence},
  label_de/en, included, content_md_de/en). RLS mirrors
  submission_drafts (owner-scoped + can_see_project, four policies).

Backend:
- BaseService (read-only Slice A): List + GetByID + GetBySlug +
  GetDefaultForCode (firm/family fallback chain).
- SectionService: ListForDraft + Get + SeedFromSpec (transactional
  multi-INSERT).
- SubmissionDraftService.AttachComposer wires both; Create resolves
  the firm default base and seeds base_id + section rows in one tx.
  Composer wiring is additive — when bases==nil the service stays
  v1-shaped.
- Update accepts BaseID **uuid.UUID (set / clear / no-change).
- submissionDraftView gains BaseID, ComposerMeta, Sections fields.
- Routes: GET /api/submission-bases (catalog list). PATCH endpoints
  on both project-scoped and global drafts accept "base_id".

Frontend:
- submission-draft.tsx: base picker dropdown above language toggle
  (hidden until catalog loads); section-list pane above the preview
  (hidden when no rows).
- client/submission-draft.ts: loadBases() parallel-fetches on boot;
  paintBasePicker rebuilds <option> list on every paint; onBaseChange
  PATCHes base_id and repaints; paintSectionList renders each section
  read-only (label + kind chip + excluded badge + Markdown body).
- Per the brief: NO auto-upgrade of existing 11 drafts (that's Slice C).
  Pre-Composer drafts get the picker (catalog still loads) but the
  section pane stays hidden until they pick a base on a new draft.

Tests:
- TestFamilyOfCode + TestBaseSectionSpec_DecodeShape + _EmptyDecode
  (pure unit, no DB).
- TestComposerSeedFlow (live, TEST_DATABASE_URL-gated): asserts mig 146
  seeded 10 default sections on both bases; GetDefaultForCode picks
  hlc-letterhead for HLC/de.inf.lg.erwidg; new draft via Create seeds
  base_id + 10 section rows in tx with ascending order_index and
  bilingual labels populated.

NO behavior change to .docx export — the v1 path stays sole render
path this slice. Composer's anchor-based assembly engine + MD→OOXML
walker land in Slice B.

Build hygiene: go build/vet/test -short clean; bun run build clean
(2900 i18n keys, data-i18n scan clean).

t-paliad-313
2026-05-26 19:23:40 +02:00

97 lines
3.3 KiB
Go

package handlers
// Submission base catalog handler — Composer Slice A (t-paliad-313,
// m/paliad#141, design doc docs/design-submission-generator-v2-2026-05-26.md
// §5.1 / Slice A acceptance).
//
// Endpoint: GET /api/submission-bases → list of active bases visible
// to the requesting firm. The sidebar picker on the draft editor reads
// this once on page load and caches in-memory; the response shape is
// stable across the picker's lifetime.
//
// Visibility: the catalog is shared firm-wide (per the design + mig
// 146's wide-open RLS SELECT policy). The handler still requires
// authentication; anonymous users 401.
//
// Filtering: the response includes the firm's own bases AND the
// firm-agnostic ones (firm IS NULL). The Go service-side filter passes
// branding.Name as the firm hint; cross-firm cases (e.g. a future
// non-HLC deployment) get their own filtered slice naturally.
import (
"net/http"
"mgit.msbls.de/m/paliad/internal/branding"
"mgit.msbls.de/m/paliad/internal/services"
)
// submissionBaseRow is the on-the-wire shape returned by the list
// endpoint. Mirrors services.SubmissionBase but drops the raw bytes
// and exposes the parsed section spec inline so the picker can show a
// preview of the default section count without an extra round-trip.
type submissionBaseRow struct {
ID string `json:"id"`
Slug string `json:"slug"`
Firm *string `json:"firm,omitempty"`
ProceedingFamily *string `json:"proceeding_family,omitempty"`
LabelDE string `json:"label_de"`
LabelEN string `json:"label_en"`
DescriptionDE *string `json:"description_de,omitempty"`
DescriptionEN *string `json:"description_en,omitempty"`
GiteaPath string `json:"gitea_path"`
IsDefaultFor []string `json:"is_default_for"`
IsActive bool `json:"is_active"`
SectionCount int `json:"section_count"`
}
type submissionBaseListResponse struct {
Bases []submissionBaseRow `json:"bases"`
}
// handleListSubmissionBases backs GET /api/submission-bases.
func handleListSubmissionBases(w http.ResponseWriter, r *http.Request) {
if !requireDB(w) {
return
}
if _, ok := requireUser(w, r); !ok {
return
}
if dbSvc.submissionBase == nil {
writeJSON(w, http.StatusServiceUnavailable, map[string]string{
"error": "submission bases not configured",
})
return
}
rows, err := dbSvc.submissionBase.List(r.Context(), branding.Name)
if err != nil {
writeServiceError(w, err)
return
}
out := make([]submissionBaseRow, 0, len(rows))
for i := range rows {
out = append(out, baseRowFromService(&rows[i]))
}
writeJSON(w, http.StatusOK, submissionBaseListResponse{Bases: out})
}
// baseRowFromService projects a services.SubmissionBase into the
// on-the-wire row shape.
func baseRowFromService(b *services.SubmissionBase) submissionBaseRow {
return submissionBaseRow{
ID: b.ID.String(),
Slug: b.Slug,
Firm: b.Firm,
ProceedingFamily: b.ProceedingFamily,
LabelDE: b.LabelDE,
LabelEN: b.LabelEN,
DescriptionDE: b.DescriptionDE,
DescriptionEN: b.DescriptionEN,
GiteaPath: b.GiteaPath,
IsDefaultFor: b.IsDefaultFor,
IsActive: b.IsActive,
SectionCount: len(b.SectionSpec.Defaults),
}
}