Merge: t-paliad-349 docforge slice 6b — authoring HTTP endpoints (m/paliad#157)

This commit is contained in:
mAi
2026-05-29 16:08:46 +02:00
2 changed files with 281 additions and 0 deletions

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@@ -755,6 +755,14 @@ func Register(mux *http.ServeMux, client *auth.Client, giteaAPIToken string, svc
protected.HandleFunc("GET /api/admin/backups/{id}", adminGate(users, handleAdminGetBackup))
protected.HandleFunc("GET /api/admin/backups/{id}/file", adminGate(users, handleAdminDownloadBackup))
// t-paliad-349 docforge slice 6 — template authoring surface
// (upload base .docx → place variable slots → save). Admin-only,
// firm-shared catalog like submission_bases.
protected.HandleFunc("GET /api/admin/templates", adminGate(users, handleListTemplates))
protected.HandleFunc("POST /api/admin/templates", adminGate(users, handleUploadTemplate))
protected.HandleFunc("GET /api/admin/templates/{id}", adminGate(users, handleGetTemplateAuthoring))
protected.HandleFunc("POST /api/admin/templates/{id}/slots", adminGate(users, handlePlaceTemplateSlot))
protected.HandleFunc("GET /api/admin/users", adminGate(users, handleAdminListUsers))
protected.HandleFunc("POST /api/admin/users", adminGate(users, handleAdminCreateUser))
protected.HandleFunc("POST /api/admin/users/full", adminGate(users, handleAdminCreateFullUser))

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@@ -0,0 +1,273 @@
package handlers
// docforge template authoring handlers (t-paliad-349 slice 6).
//
// The admin-only authoring surface: upload a base .docx, see it rendered as
// run-addressable text, place {{variable}} slots into it, and save the
// result as a reusable template. Backed by docforge.TemplateStore
// (Postgres bytea carrier) + the docx authoring engine
// (ImportForAuthoring / InjectSlot).
//
// Endpoints (all under adminGate — templates are firm-shared, admin-
// authored, like submission_bases):
// GET /api/admin/templates — catalog list
// POST /api/admin/templates — multipart upload → create v1
// GET /api/admin/templates/{id} — authoring view (preview+slots)
// POST /api/admin/templates/{id}/slots — place a slot → new version
//
// Slot placement creates a new template version (immutable snapshot) per
// placement. That keeps the snapshot guarantee simple; batching a whole
// authoring session into one version on an explicit "save" is a documented
// future refinement (it trades the version-per-slot churn for a client- or
// session-held draft carrier).
//
// VERIFICATION CEILING: the live upload→render→select→inject→save flow
// needs the app running with DATABASE_URL + Supabase auth + Playwright; it
// is verified post-merge. The docx surgery (ImportForAuthoring/InjectSlot)
// and the store are unit/live-tested independently.
import (
"encoding/json"
"errors"
"fmt"
"io"
"net/http"
"mgit.msbls.de/m/paliad/pkg/docforge"
"mgit.msbls.de/m/paliad/pkg/docforge/docx"
)
// maxTemplateUpload bounds an uploaded .docx. Templates are firm letterhead
// + chrome — tens of KB in practice; 10 MB is a generous ceiling.
const maxTemplateUpload = 10 << 20
type templateMetaJSON struct {
ID string `json:"id"`
Slug string `json:"slug,omitempty"`
NameDE string `json:"name_de"`
NameEN string `json:"name_en"`
Kind string `json:"kind"`
SourceFormat string `json:"source_format"`
Firm string `json:"firm,omitempty"`
IsActive bool `json:"is_active"`
Version int `json:"version"`
}
type templateSlotJSON struct {
Key string `json:"key"`
Anchor string `json:"anchor"`
Label string `json:"label,omitempty"`
OrderIndex int `json:"order_index"`
}
type authoringViewJSON struct {
Template templateMetaJSON `json:"template"`
PreviewHTML string `json:"preview_html"`
Slots []templateSlotJSON `json:"slots"`
}
func metaJSON(m docforge.TemplateMeta) templateMetaJSON {
return templateMetaJSON{
ID: m.ID, Slug: m.Slug, NameDE: m.NameDE, NameEN: m.NameEN,
Kind: m.Kind, SourceFormat: m.SourceFormat, Firm: m.Firm,
IsActive: m.IsActive, Version: m.Version,
}
}
func slotsJSON(slots []docforge.TemplateSlot) []templateSlotJSON {
out := make([]templateSlotJSON, 0, len(slots))
for _, s := range slots {
out = append(out, templateSlotJSON{Key: s.Key, Anchor: s.Anchor, Label: s.Label, OrderIndex: s.OrderIndex})
}
return out
}
// writeTemplateError maps docforge's not-found sentinel to 404 and falls
// back to the shared service-error mapper.
func writeTemplateError(w http.ResponseWriter, err error) {
if errors.Is(err, docforge.ErrTemplateNotFound) {
writeJSON(w, http.StatusNotFound, map[string]string{"error": "template not found"})
return
}
writeServiceError(w, err)
}
func requireTemplateStore(w http.ResponseWriter) bool {
if !requireDB(w) {
return false
}
if dbSvc.templateStore == nil {
writeJSON(w, http.StatusServiceUnavailable, map[string]string{"error": "template store not configured"})
return false
}
return true
}
// handleListTemplates backs GET /api/admin/templates.
func handleListTemplates(w http.ResponseWriter, r *http.Request) {
if !requireTemplateStore(w) {
return
}
if _, ok := requireUser(w, r); !ok {
return
}
metas, err := dbSvc.templateStore.List(r.Context(), docforge.TemplateFilter{ActiveOnly: true})
if err != nil {
writeTemplateError(w, err)
return
}
out := make([]templateMetaJSON, 0, len(metas))
for _, m := range metas {
out = append(out, metaJSON(m))
}
writeJSON(w, http.StatusOK, map[string]any{"templates": out})
}
// handleUploadTemplate backs POST /api/admin/templates (multipart). Reads
// the uploaded .docx, validates it parses, detects any slots already in it,
// and creates the template at version 1.
func handleUploadTemplate(w http.ResponseWriter, r *http.Request) {
if !requireTemplateStore(w) {
return
}
uid, ok := requireUser(w, r)
if !ok {
return
}
if err := r.ParseMultipartForm(maxTemplateUpload); err != nil {
writeJSON(w, http.StatusBadRequest, map[string]string{"error": "invalid multipart form"})
return
}
file, _, err := r.FormFile("file")
if err != nil {
writeJSON(w, http.StatusBadRequest, map[string]string{"error": "file field required"})
return
}
defer file.Close()
carrier, err := io.ReadAll(io.LimitReader(file, maxTemplateUpload))
if err != nil {
writeJSON(w, http.StatusBadRequest, map[string]string{"error": "could not read uploaded file"})
return
}
nameDE := r.FormValue("name_de")
nameEN := r.FormValue("name_en")
if nameDE == "" || nameEN == "" {
writeJSON(w, http.StatusBadRequest, map[string]string{"error": "name_de and name_en required"})
return
}
// Validate + detect existing slots before persisting.
view, err := docx.ImportForAuthoring(carrier)
if err != nil {
writeJSON(w, http.StatusBadRequest, map[string]string{"error": "not a parseable .docx: " + err.Error()})
return
}
tmpl, err := dbSvc.templateStore.Create(r.Context(),
docforge.TemplateMetaInput{
Slug: r.FormValue("slug"),
NameDE: nameDE,
NameEN: nameEN,
Firm: r.FormValue("firm"),
CreatedBy: uid.String(),
},
docforge.TemplateVersionInput{
CarrierBytes: carrier,
Slots: view.Slots,
CreatedBy: uid.String(),
})
if err != nil {
writeTemplateError(w, err)
return
}
writeJSON(w, http.StatusCreated, authoringViewJSON{
Template: metaJSON(tmpl.TemplateMeta),
PreviewHTML: view.PreviewHTML,
Slots: slotsJSON(tmpl.Slots),
})
}
// handleGetTemplateAuthoring backs GET /api/admin/templates/{id} — the
// authoring view: current carrier rendered run-addressable + its slots.
func handleGetTemplateAuthoring(w http.ResponseWriter, r *http.Request) {
if !requireTemplateStore(w) {
return
}
if _, ok := requireUser(w, r); !ok {
return
}
tmpl, err := dbSvc.templateStore.Get(r.Context(), r.PathValue("id"))
if err != nil {
writeTemplateError(w, err)
return
}
view, err := docx.ImportForAuthoring(tmpl.CarrierBytes)
if err != nil {
writeJSON(w, http.StatusInternalServerError, map[string]string{"error": "stored carrier failed to parse: " + err.Error()})
return
}
writeJSON(w, http.StatusOK, authoringViewJSON{
Template: metaJSON(tmpl.TemplateMeta),
PreviewHTML: view.PreviewHTML,
Slots: slotsJSON(view.Slots),
})
}
type placeSlotInput struct {
RunIndex int `json:"run_index"`
SelectedText string `json:"selected_text"`
SlotKey string `json:"slot_key"`
}
// handlePlaceTemplateSlot backs POST /api/admin/templates/{id}/slots —
// inject a slot at the selection and persist as a new version.
func handlePlaceTemplateSlot(w http.ResponseWriter, r *http.Request) {
if !requireTemplateStore(w) {
return
}
uid, ok := requireUser(w, r)
if !ok {
return
}
var in placeSlotInput
if err := json.NewDecoder(r.Body).Decode(&in); err != nil {
writeJSON(w, http.StatusBadRequest, map[string]string{"error": "invalid JSON body"})
return
}
id := r.PathValue("id")
tmpl, err := dbSvc.templateStore.Get(r.Context(), id)
if err != nil {
writeTemplateError(w, err)
return
}
newCarrier, err := docx.InjectSlot(tmpl.CarrierBytes, in.RunIndex, in.SelectedText, in.SlotKey)
if err != nil {
// Injection failures are client-fixable (bad selection / key).
writeJSON(w, http.StatusBadRequest, map[string]string{"error": err.Error()})
return
}
// Re-detect slots from the new carrier so template_slots mirrors the
// carrier's actual {{tokens}} (single source of truth).
newView, err := docx.ImportForAuthoring(newCarrier)
if err != nil {
writeJSON(w, http.StatusInternalServerError, map[string]string{"error": fmt.Sprintf("post-inject parse: %v", err)})
return
}
updated, err := dbSvc.templateStore.AddVersion(r.Context(), id,
docforge.TemplateVersionInput{
CarrierBytes: newCarrier,
Stylemap: tmpl.Stylemap,
Slots: newView.Slots,
CreatedBy: uid.String(),
})
if err != nil {
writeTemplateError(w, err)
return
}
writeJSON(w, http.StatusOK, authoringViewJSON{
Template: metaJSON(updated.TemplateMeta),
PreviewHTML: newView.PreviewHTML,
Slots: slotsJSON(updated.Slots),
})
}