feat(catalog): class template editing

Templates were delete-and-recreate only. Adds PUT
/v1/catalog/class-templates/{id} across repository, service (sharing
the create-time validation), route, spec, and client; the classes tab
gets a pencil action that loads the row into the form with a
save/cancel affordance.

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

apps/backend/internal/api/server.go

@@ -998,6 +998,26 @@ func NewServer(cfg config.Config, pools *db.Pools) (*Server, error) {
 		}
 		c.JSON(http.StatusCreated, response)
 	})
+	protected.PUT("/catalog/class-templates/:templateID", func(c *gin.Context) {
+		var request domain.UpsertClassTemplateRequest
+		if err := c.ShouldBindJSON(&request); err != nil {
+			c.JSON(http.StatusBadRequest, gin.H{"error": "invalid_request"})
+			return
+		}
+		response, err := catalogService.UpdateClassTemplate(c.Request.Context(), auth.PrincipalFromContext(c), c.Param("templateID"), request)
+		if err != nil {
+			status := http.StatusInternalServerError
+			switch {
+			case errors.Is(err, catalog.ErrTenantMembership), errors.Is(err, catalog.ErrClassTemplateNotFound):
+				status = http.StatusNotFound
+			case errors.Is(err, catalog.ErrInvalidInput):
+				status = http.StatusBadRequest
+			}
+			c.JSON(status, gin.H{"error": err.Error()})
+			return
+		}
+		c.JSON(http.StatusOK, response)
+	})
 	protected.DELETE("/catalog/class-templates/:templateID", func(c *gin.Context) {
 		err := catalogService.DeleteClassTemplate(c.Request.Context(), auth.PrincipalFromContext(c), c.Param("templateID"))
 		if err != nil {

apps/backend/internal/catalog/service.go

@@ -1050,15 +1050,9 @@ func (s *Service) CreateClassTemplate(ctx context.Context, principal domain.Prin
 		return domain.ClassTemplate{}, ErrTenantMembership
 	}
 
-	title := strings.TrimSpace(req.Title)
-	if len(title) < 1 || len(title) > 120 {
-		return domain.ClassTemplate{}, fmt.Errorf("%w: title must be between 1 and 120 characters", ErrInvalidInput)
-	}
-	if req.DurationMinutes < 1 || req.DurationMinutes > 1440 {
-		return domain.ClassTemplate{}, fmt.Errorf("%w: durationMinutes must be between 1 and 1440", ErrInvalidInput)
-	}
-	if req.Capacity < 1 || req.Capacity > 500 {
-		return domain.ClassTemplate{}, fmt.Errorf("%w: capacity must be between 1 and 500", ErrInvalidInput)
+	title, err := validateClassTemplateInput(req)
+	if err != nil {
+		return domain.ClassTemplate{}, err
 	}
 
 	rec, err := s.repo.CreateClassTemplate(ctx, db.CreateClassTemplateParams{
@@ -1372,3 +1366,48 @@ func (s *Service) sendBookingEmail(booking db.BookingRecord, promoted bool) {
 		s.notificationService.SendBookingCancellation(ctx, data)
 	}
 }
+
+func (s *Service) UpdateClassTemplate(ctx context.Context, principal domain.Principal, templateID string, req domain.UpsertClassTemplateRequest) (domain.ClassTemplate, error) {
+	membership, err := s.repo.GetTenantMembershipBySubject(ctx, principal.Subject)
+	if err != nil {
+		return domain.ClassTemplate{}, ErrTenantMembership
+	}
+	if err := s.requireTenantClassTemplate(ctx, membership.Tenant.ID, templateID); err != nil {
+		return domain.ClassTemplate{}, err
+	}
+	title, err := validateClassTemplateInput(req)
+	if err != nil {
+		return domain.ClassTemplate{}, err
+	}
+	rec, err := s.repo.UpdateClassTemplate(ctx, templateID, db.CreateClassTemplateParams{
+		TenantID:        membership.Tenant.ID,
+		Title:           title,
+		DurationMinutes: req.DurationMinutes,
+		Capacity:        req.Capacity,
+	})
+	if err != nil {
+		return domain.ClassTemplate{}, err
+	}
+	return domain.ClassTemplate{
+		ID:              rec.ID,
+		TenantID:        rec.TenantID,
+		Title:           rec.Title,
+		DurationMinutes: rec.DurationMinutes,
+		Capacity:        rec.Capacity,
+		CreatedAt:       rec.CreatedAt,
+	}, nil
+}
+
+func validateClassTemplateInput(req domain.UpsertClassTemplateRequest) (string, error) {
+	title := strings.TrimSpace(req.Title)
+	if len(title) < 1 || len(title) > 120 {
+		return "", fmt.Errorf("%w: title must be between 1 and 120 characters", ErrInvalidInput)
+	}
+	if req.DurationMinutes < 1 || req.DurationMinutes > 1440 {
+		return "", fmt.Errorf("%w: durationMinutes must be between 1 and 1440", ErrInvalidInput)
+	}
+	if req.Capacity < 1 || req.Capacity > 500 {
+		return "", fmt.Errorf("%w: capacity must be between 1 and 500", ErrInvalidInput)
+	}
+	return title, nil
+}

apps/backend/internal/catalog/service_test.go

@@ -640,3 +640,43 @@ func TestCancelBookingPromotesWaitlist(t *testing.T) {
 		t.Fatalf("expected second waiter promoted, got %q", booking.Status)
 	}
 }
+
+func TestUpdateClassTemplate(t *testing.T) {
+	repo := db.NewMemoryRepository()
+	svc := newCatalogService(repo)
+	ctx := context.Background()
+
+	created, err := svc.CreateClassTemplate(ctx, owner, domain.UpsertClassTemplateRequest{
+		Title: "Yin Yoga", DurationMinutes: 75, Capacity: 10,
+	})
+	if err != nil {
+		t.Fatalf("create template: %v", err)
+	}
+
+	updated, err := svc.UpdateClassTemplate(ctx, owner, created.ID, domain.UpsertClassTemplateRequest{
+		Title: "Yin Yoga (večer)", DurationMinutes: 90, Capacity: 12,
+	})
+	if err != nil {
+		t.Fatalf("update template: %v", err)
+	}
+	if updated.Title != "Yin Yoga (večer)" || updated.DurationMinutes != 90 || updated.Capacity != 12 {
+		t.Fatalf("unexpected updated template: %+v", updated)
+	}
+
+	if _, err := svc.UpdateClassTemplate(ctx, owner, created.ID, domain.UpsertClassTemplateRequest{
+		Title: "", DurationMinutes: 90, Capacity: 12,
+	}); !errors.Is(err, ErrInvalidInput) {
+		t.Fatalf("expected ErrInvalidInput, got %v", err)
+	}
+	stranger := domain.Principal{Subject: "someone-else", Role: "staff"}
+	if _, err := svc.UpdateClassTemplate(ctx, stranger, created.ID, domain.UpsertClassTemplateRequest{
+		Title: "X", DurationMinutes: 60, Capacity: 5,
+	}); !errors.Is(err, ErrTenantMembership) {
+		t.Fatalf("expected ErrTenantMembership, got %v", err)
+	}
+	if _, err := svc.UpdateClassTemplate(ctx, owner, "00000000-0000-0000-0000-000000000099", domain.UpsertClassTemplateRequest{
+		Title: "X", DurationMinutes: 60, Capacity: 5,
+	}); !errors.Is(err, ErrClassTemplateNotFound) {
+		t.Fatalf("expected ErrClassTemplateNotFound, got %v", err)
+	}
+}

apps/backend/internal/db/classes.go

@@ -71,6 +71,24 @@ func (r *PGRepository) CreateClassTemplate(ctx context.Context, params CreateCla
 	return record, err
 }
 
+func (r *PGRepository) UpdateClassTemplate(ctx context.Context, templateID string, params CreateClassTemplateParams) (ClassTemplateRecord, error) {
+	var record ClassTemplateRecord
+	err := r.pool.QueryRow(ctx, `
+		UPDATE class_templates
+		SET title = $2, duration_minutes = $3, capacity = $4
+		WHERE id = $1
+		RETURNING `+classTemplateColumns+`
+	`, templateID, params.Title, params.DurationMinutes, params.Capacity).Scan(
+		&record.ID,
+		&record.TenantID,
+		&record.Title,
+		&record.DurationMinutes,
+		&record.Capacity,
+		&record.CreatedAt,
+	)
+	return record, err
+}
+
 func (r *PGRepository) DeleteClassTemplate(ctx context.Context, templateID string) error {
 	_, err := r.pool.Exec(ctx, `DELETE FROM class_templates WHERE id = $1`, templateID)
 	return err

apps/backend/internal/db/repository.go

@@ -32,6 +32,7 @@ type Repository interface {
 	ListClassTemplatesByTenant(ctx context.Context, tenantID string) ([]ClassTemplateRecord, error)
 	GetClassTemplateByID(ctx context.Context, templateID string) (ClassTemplateRecord, error)
 	CreateClassTemplate(ctx context.Context, params CreateClassTemplateParams) (ClassTemplateRecord, error)
+	UpdateClassTemplate(ctx context.Context, templateID string, params CreateClassTemplateParams) (ClassTemplateRecord, error)
 	DeleteClassTemplate(ctx context.Context, templateID string) error
 	ListBookingsByTenantBetween(ctx context.Context, tenantID string, from time.Time, to time.Time) ([]BookingRecord, error)
 	CreateBooking(ctx context.Context, params CreateBookingParams) (CreatedBooking, error)
@@ -1311,6 +1312,18 @@ func (r *MemoryRepository) CreateClassTemplate(_ context.Context, params CreateC
 	return record, nil
 }
 
+func (r *MemoryRepository) UpdateClassTemplate(_ context.Context, templateID string, params CreateClassTemplateParams) (ClassTemplateRecord, error) {
+	for index := range r.classTemplates {
+		if r.classTemplates[index].ID == templateID {
+			r.classTemplates[index].Title = params.Title
+			r.classTemplates[index].DurationMinutes = params.DurationMinutes
+			r.classTemplates[index].Capacity = params.Capacity
+			return r.classTemplates[index], nil
+		}
+	}
+	return ClassTemplateRecord{}, pgx.ErrNoRows
+}
+
 func (r *MemoryRepository) DeleteClassTemplate(_ context.Context, templateID string) error {
 	for i, template := range r.classTemplates {
 		if template.ID == templateID {

apps/backend/openapi/bookra.openapi.yaml

@@ -1099,6 +1099,31 @@ paths:
         "400":
           description: Invalid request
   /v1/catalog/class-templates/{templateID}:
+    put:
+      tags: [Catalog]
+      operationId: updateClassTemplate
+      security:
+        - bearerAuth: []
+      parameters:
+        - in: path
+          name: templateID
+          required: true
+          schema:
+            type: string
+            format: uuid
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              $ref: "#/components/schemas/UpsertClassTemplateRequest"
+      responses:
+        "200":
+          description: Updated class template
+        "400":
+          description: Invalid input
+        "404":
+          description: Template not found
     delete:
       tags: [Catalog]
       operationId: deleteClassTemplate

apps/frontend/src/components/dashboard/icons.tsx

@@ -114,6 +114,12 @@ export const PlusIcon = () => (
   </svg>
 );
 
+export const PencilIcon = () => (
+  <svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+    <path d="M12 20h9"/><path d="M16.5 3.5a2.121 2.121 0 0 1 3 3L7 19l-4 1 1-4L16.5 3.5"/>
+  </svg>
+);
+
 export const ScissorsIcon = () => (
   <svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round">
     <circle cx="6" cy="6" r="3"/><path d="M8.12 8.12 12 12"/><path d="M20 4 8.12 15.88"/><circle cx="6" cy="18" r="3"/><path d="M14.8 14.8 20 20"/>

apps/frontend/src/providers/i18n-provider.tsx

@@ -411,6 +411,7 @@ const dictionaries = {
     "dashboard.class.templates": "Šablony lekcí",
     "dashboard.class.sessions": "Naplánované lekce",
     "dashboard.class.addTemplate": "Nová šablona",
+    "dashboard.class.saveChanges": "Uložit změny",
     "dashboard.class.addSession": "Naplánovat lekci",
     "dashboard.class.title": "Název",
     "dashboard.class.titlePlaceholder": "např. Jóga pro začátečníky",
@@ -986,6 +987,7 @@ const dictionaries = {
     "dashboard.class.templates": "Class templates",
     "dashboard.class.sessions": "Scheduled sessions",
     "dashboard.class.addTemplate": "New template",
+    "dashboard.class.saveChanges": "Save changes",
     "dashboard.class.addSession": "Schedule session",
     "dashboard.class.title": "Title",
     "dashboard.class.titlePlaceholder": "e.g. Beginner yoga",

apps/frontend/src/routes/dashboard/zones-page.tsx

@@ -2,7 +2,7 @@ import { For, Show, createResource, createSignal } from "solid-js";
 import { apiClient } from "../../lib/api-client";
 import { Input } from "../../components/ui/input";
 import { Select } from "../../components/ui/select";
-import { MapPinIcon, PlusIcon, BanIcon, ClockIcon, SparklesIcon, Trash2Icon, UsersIcon } from "../../components/dashboard/icons";
+import { MapPinIcon, PlusIcon, BanIcon, ClockIcon, SparklesIcon, Trash2Icon, UsersIcon, PencilIcon } from "../../components/dashboard/icons";
 import { DashboardLayout, useDashboardData } from "./layout";
 
 function ZonesPage() {
@@ -24,6 +24,7 @@ function ZonesPage() {
   const [newTemplateDuration, setNewTemplateDuration] = createSignal(60);
   const [newTemplateCapacity, setNewTemplateCapacity] = createSignal(8);
   const [templateSaving, setTemplateSaving] = createSignal(false);
+  const [editingTemplateId, setEditingTemplateId] = createSignal<string | null>(null);
   const [newSessionTemplateId, setNewSessionTemplateId] = createSignal("");
   const [newSessionLocationId, setNewSessionLocationId] = createSignal("");
   const [newSessionStartsAt, setNewSessionStartsAt] = createSignal("");
@@ -211,18 +212,25 @@ function ZonesPage() {
     }
   };
 
-  const handleAddTemplate = async () => {
+  const resetTemplateForm = () => {
+    setNewTemplateTitle(""); setNewTemplateDuration(60); setNewTemplateCapacity(8); setEditingTemplateId(null);
+  };
+
+  const handleSaveTemplate = async () => {
     const bearer = data.token();
     if (!newTemplateTitle().trim()) return;
     if (!bearer || bearer.startsWith("demo.")) { data.setDemoNotice(cs() ? "V demo režimu nelze ukládat." : "Cannot save in demo mode."); return; }
     setTemplateSaving(true);
     try {
-      await (apiClient as any).POST("/v1/catalog/class-templates", {
-        ...authHeaders(),
-        body: { title: newTemplateTitle().trim(), durationMinutes: newTemplateDuration(), capacity: newTemplateCapacity() },
-      });
-      setNewTemplateTitle(""); setNewTemplateDuration(60); setNewTemplateCapacity(8);
-      void refetchTemplates();
+      const body = { title: newTemplateTitle().trim(), durationMinutes: newTemplateDuration(), capacity: newTemplateCapacity() };
+      const editing = editingTemplateId();
+      if (editing) {
+        await (apiClient as any).PUT(`/v1/catalog/class-templates/${editing}`, { ...authHeaders(), body });
+      } else {
+        await (apiClient as any).POST("/v1/catalog/class-templates", { ...authHeaders(), body });
+      }
+      resetTemplateForm();
+      void refetchTemplates(); void refetchSessions();
     } catch {
       data.setDemoNotice(cs() ? "Uložení selhalo." : "Save failed.");
     } finally {
@@ -230,6 +238,13 @@ function ZonesPage() {
     }
   };
 
+  const handleEditTemplate = (tpl: any) => {
+    setNewTemplateTitle(tpl.title);
+    setNewTemplateDuration(tpl.durationMinutes);
+    setNewTemplateCapacity(tpl.capacity);
+    setEditingTemplateId(tpl.id);
+  };
+
   const handleDeleteTemplate = async (id: string) => {
     const bearer = data.token();
     if (!bearer || bearer.startsWith("demo.")) { data.setDemoNotice(cs() ? "V demo režimu nelze mazat." : "Cannot delete in demo mode."); return; }
@@ -487,9 +502,14 @@ function ZonesPage() {
                 <Input type="number" label={data.i18n.t("dashboard.class.durationMin")} value={newTemplateDuration()} onInput={(e) => setNewTemplateDuration(parseInt(e.currentTarget.value) || 60)} />
                 <Input type="number" label={data.i18n.t("dashboard.zone.capacity")} value={newTemplateCapacity()} onInput={(e) => setNewTemplateCapacity(parseInt(e.currentTarget.value) || 8)} />
                 <div class="flex items-end">
-                  <button onClick={() => void handleAddTemplate()} disabled={templateSaving() || !newTemplateTitle().trim()} class="btn-primary text-sm w-full sm:w-auto disabled:opacity-60">
-                    {templateSaving() ? data.i18n.t("dashboard.saving") : data.i18n.t("dashboard.class.addTemplate")}
+                  <button onClick={() => void handleSaveTemplate()} disabled={templateSaving() || !newTemplateTitle().trim()} class="btn-primary text-sm w-full sm:w-auto disabled:opacity-60">
+                    {templateSaving() ? data.i18n.t("dashboard.saving") : editingTemplateId() ? data.i18n.t("dashboard.class.saveChanges") : data.i18n.t("dashboard.class.addTemplate")}
                   </button>
+                  <Show when={editingTemplateId()}>
+                    <button onClick={resetTemplateForm} class="text-sm text-ink-muted hover:text-ink px-3 py-2">
+                      {data.i18n.t("dashboard.cancel")}
+                    </button>
+                  </Show>
                 </div>
               </div>
             </div>
@@ -509,8 +529,11 @@ function ZonesPage() {
                           <p class="text-sm text-ink-muted">{tpl.durationMinutes} {data.i18n.t("dashboard.service.min")} &bull; {data.i18n.t("dashboard.zone.capacity")}: {tpl.capacity}</p>
                         </div>
                       </div>
+                      <div class="flex items-center gap-1">
+                        <button onClick={() => handleEditTemplate(tpl)} class="p-2 text-ink-subtle hover:text-accent hover:bg-accent-subtle rounded-lg transition-colors"><PencilIcon /></button>
                         <button onClick={() => void handleDeleteTemplate(tpl.id)} class="p-2 text-ink-subtle hover:text-red-600 hover:bg-red-50 rounded-lg transition-colors"><Trash2Icon /></button>
                       </div>
+                    </div>
                   )}
                 </For>
               </div>

packages/api-client/src/generated/types.ts

@@ -359,7 +359,7 @@ export interface paths {
             cookie?: never;
         };
         get?: never;
-        put?: never;
+        put: operations["updateClassTemplate"];
         post?: never;
         delete: operations["deleteClassTemplate"];
         options?: never;
@@ -2220,6 +2220,44 @@ export interface operations {
             };
         };
     };
+    updateClassTemplate: {
+        parameters: {
+            query?: never;
+            header?: never;
+            path: {
+                templateID: string;
+            };
+            cookie?: never;
+        };
+        requestBody: {
+            content: {
+                "application/json": components["schemas"]["UpsertClassTemplateRequest"];
+            };
+        };
+        responses: {
+            /** @description Updated class template */
+            200: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content?: never;
+            };
+            /** @description Invalid input */
+            400: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content?: never;
+            };
+            /** @description Template not found */
+            404: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content?: never;
+            };
+        };
+    };
     deleteClassTemplate: {
         parameters: {
             query?: never;

project.md

@@ -112,6 +112,10 @@
   - `CustomerBookingView` carries `waitlistPosition` for waitlisted class bookings; the manage page now shows a proper status badge for `waitlisted`/`cancelled` (previously both rendered as "Pending") plus a notice with the queue position and the auto-promotion explanation, in CS and EN
   - fixed invalid token names along the way (`--danger-soft`/`--warning-soft` do not exist; `--error-subtle`/`--warning-subtle` do)
   - remaining: live staging validation; manual waitlist promotion controls are still not exposed
+- `[done/partial]` Milestone 17: Class template editing
+  - `PUT /v1/catalog/class-templates/{id}` end-to-end: `UpdateClassTemplate` in both repositories, catalog service method sharing `validateClassTemplateInput` with create, route, OpenAPI path, regenerated client
+  - classes tab template rows gained a pencil edit action that loads the template into the form; the submit button switches to save-changes with a cancel affordance
+  - remaining: live staging validation
 
 ## Overview
 Bookra is a Czech-first booking SaaS for small local service businesses. It targets salons, massage therapists, small clinics, repair shops, and small studios/clubs that need a simple public booking flow, internal schedule management, reminders, and basic business reporting without becoming a full ERP.