feat: implement Story 1.4 — recent view and drag-and-drop organization
Add sortOrder column to diagrams, extend PATCH endpoint with projectId and sortOrder fields, add POST /diagrams/reorder bulk endpoint with ownership verification and duplicate ID validation. Enhance RecentList with lastAiMessage preview subtitle. Implement @dnd-kit drag-and-drop in ProjectTree sidebar with cross-project moves, intra-project reorder, optimistic updates, drag overlay, drop indicators, and keyboard/pointer sensor support. Context-aware GET ordering: sortOrder for project views, updatedAt for recent/all views. 141 tests pass. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Alejandro Gutiérrez
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# Story 1.4: Recent View & Drag-and-Drop Organization
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Status: done
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<!-- Note: Validation is optional. Run validate-create-story for quality check before dev-story. -->
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## Story
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As a user,
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I want to see my recent diagrams with conversation context and reorder my workspace via drag-and-drop,
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so that I can quickly resume work and keep my projects organized.
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## Acceptance Criteria
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1. **Given** I have interacted with multiple diagrams, **When** I open the "Recent" tab in the sidebar, **Then** diagrams are sorted by last interaction (most recent first), **And** each item shows the diagram title, type icon, and the last AI chat message as a preview subtitle (truncated to ~60 chars).
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2. **Given** I am in the Projects tree view, **When** I drag a diagram from one project to another (or from unorganized to a project), **Then** the diagram's `projectId` is updated via API call, **And** the sidebar tree reflects the new organization immediately with optimistic UI update.
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3. **Given** I am viewing diagrams within a project in the sidebar, **When** I drag to reorder diagrams, **Then** the `sortOrder` is updated for affected diagrams, **And** the new order persists on page reload.
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4. **Given** I have no diagrams yet, **When** I view the dashboard, **Then** I see an empty state with a call-to-action: "Create your first diagram" button and a brief description of what domaingraph does.
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## Tasks / Subtasks
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- [x] Task 1: Add `sortOrder` column to diagram table and extend PATCH endpoint (AC: #2, #3)
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- [x] 1.1: Add `sortOrder: integer().default(0)` column to `diagram` table in `packages/db/src/schema/diagram.ts`
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- [x] 1.2: Generate and apply Drizzle migration
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- [x] 1.3: Extend `updateDiagramBodySchema` to accept `projectId` (string, optional) and `sortOrder` (integer, optional) in addition to `title`
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- [x] 1.4: Add bulk reorder endpoint: `POST /diagrams/reorder` accepting `{ items: [{ id, sortOrder }] }` for batch sortOrder updates
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- [x] Task 2: Enhance RecentList with AI preview subtitle (AC: #1)
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- [x] 2.1: Modify `RecentList.tsx` to display `lastAiMessage` truncated to ~60 chars as a subtitle below each diagram title
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- [x] 2.2: Add muted text styling for the subtitle line
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- [x] 2.3: Ensure the list is sorted by `updatedAt` descending (already the case from the API)
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- [x] Task 3: Install @dnd-kit and implement drag-and-drop in sidebar (AC: #2, #3)
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- [x] 3.1: Install `@dnd-kit/core`, `@dnd-kit/sortable`, `@dnd-kit/utilities` in `apps/web`
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- [x] 3.2: Wrap `ProjectTree` content with `DndContext` + `SortableContext` providers
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- [x] 3.3: Make diagram items in expanded projects sortable with `useSortable` hook
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- [x] 3.4: Implement cross-project drag: detect when a diagram is dropped on a different project node → call PATCH to update `projectId` with optimistic React Query update
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- [x] 3.5: Implement intra-project reorder: detect sort order changes within a project → call `POST /diagrams/reorder` with new sort orders
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- [x] 3.6: Add drag overlay component showing the diagram title being dragged
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- [x] 3.7: Add visual drop indicators (highlight target project on dragover)
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- [x] Task 4: Update DiagramGrid to show diagrams in sortOrder (AC: #3)
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- [x] 4.1: Update the GET `/diagrams` endpoint to order by `sortOrder ASC, updatedAt DESC` (sortOrder as primary, updatedAt as tiebreaker)
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- [x] 4.2: Ensure DiagramGrid respects the API ordering
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- [x] Task 5: Verify empty state (AC: #4)
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- [x] 5.1: Confirm `EmptyDiagrams` component renders when no diagrams exist (already implemented — verify integration)
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- [x] Task 6: Tests (AC: all)
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- [x] 6.1: API tests for extended `updateDiagramBodySchema` (projectId and sortOrder fields)
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- [x] 6.2: API tests for `POST /diagrams/reorder` endpoint (batch update, ownership check)
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- [x] 6.3: Verify existing 120 tests still pass (139 tests pass)
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## Dev Notes
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### DB Schema Change — Add `sortOrder` to Diagrams
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Modify `packages/db/src/schema/diagram.ts`:
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```typescript
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export const diagram = pgTable("diagram", {
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id: text().primaryKey().notNull().$defaultFn(generateId),
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title: text().notNull(),
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type: diagramTypeEnum().notNull(),
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graphData: jsonb().$type<object>().default({}),
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userId: text()
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.references(() => user.id, { onDelete: "cascade" })
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.notNull(),
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projectId: text(),
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sortOrder: integer().default(0), // ← NEW
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lastAiMessage: text(),
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deletedAt: timestamp(),
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createdAt: timestamp().defaultNow(),
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updatedAt: timestamp().$onUpdate(() => new Date()),
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});
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```
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After adding the column:
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```bash
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pnpm --filter @turbostarter/db generate
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pnpm --filter @turbostarter/db migrate
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```
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### API — Extend PATCH and Add Reorder Endpoint
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**Extend `updateDiagramBodySchema`** in `packages/api/src/modules/diagram/router.ts`:
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```typescript
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export const updateDiagramBodySchema = z
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.object({
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title: z.string().min(1).max(255).optional(),
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projectId: z.string().nullable().optional(),
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sortOrder: z.number().int().min(0).optional(),
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})
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.refine(
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(data) => data.title !== undefined || data.projectId !== undefined || data.sortOrder !== undefined,
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{ message: "At least one field must be provided" },
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);
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```
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**Add bulk reorder endpoint:**
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```typescript
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const reorderDiagramsSchema = z.object({
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items: z.array(z.object({
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id: z.string(),
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sortOrder: z.number().int().min(0),
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})).min(1).max(100),
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});
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.post(
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"/reorder",
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enforceAuth,
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validate("json", reorderDiagramsSchema),
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async (c) => {
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const { items } = c.req.valid("json");
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// Verify all diagrams belong to the user
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const diagramIds = items.map((i) => i.id);
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const owned = await db.select({ id: diagram.id })
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.from(diagram)
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.where(and(
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inArray(diagram.id, diagramIds),
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eq(diagram.userId, c.var.user.id),
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isNull(diagram.deletedAt),
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));
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if (owned.length !== diagramIds.length) {
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throw new HttpException(HttpStatusCode.FORBIDDEN, {
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code: "error.forbidden",
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message: "One or more diagrams not found or not owned",
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});
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}
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// Batch update sortOrders
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await db.transaction(async (tx) => {
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for (const item of items) {
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await tx.update(diagram)
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.set({ sortOrder: item.sortOrder })
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.where(eq(diagram.id, item.id));
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}
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});
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return c.json({ data: { success: true } });
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},
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)
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```
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**IMPORTANT:** The `/reorder` route must be registered BEFORE `/:id` routes to avoid route matching conflicts. Place it right after the `GET /` and `POST /` routes.
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**Update GET `/` ordering:**
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```typescript
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.orderBy(asc(diagram.sortOrder), desc(diagram.updatedAt))
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```
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Import `asc` from `drizzle-orm` alongside existing imports.
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### Frontend — RecentList Enhancement
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Modify `apps/web/src/modules/diagram/components/sidebar/RecentList.tsx`:
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Add `lastAiMessage` preview below each diagram title:
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```tsx
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<button key={d.id} className="flex w-full items-start gap-2 rounded-md px-2 py-1.5 text-sm hover:bg-accent/50 cursor-pointer"
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onClick={() => router.push(pathsConfig.dashboard.user.diagram(d.id))}
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>
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<TypeIcon className={`h-4 w-4 shrink-0 mt-0.5 ${config.color}`} />
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<div className="flex-1 min-w-0">
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<span className="block truncate text-left">{d.title}</span>
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{d.lastAiMessage && (
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<span className="block truncate text-xs text-muted-foreground">
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{d.lastAiMessage.length > 60 ? `${d.lastAiMessage.slice(0, 60)}...` : d.lastAiMessage}
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</span>
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)}
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</div>
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<span className="shrink-0 text-xs text-muted-foreground mt-0.5">
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{d.updatedAt ? timeAgo(new Date(d.updatedAt)) : "just now"}
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</span>
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</button>
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```
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Key changes: `items-center` → `items-start`, add subtitle div, add `mt-0.5` alignment.
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### Frontend — @dnd-kit Drag-and-Drop in ProjectTree
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**Install dependencies:**
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```bash
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pnpm --filter web add @dnd-kit/core @dnd-kit/sortable @dnd-kit/utilities
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```
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**Implementation approach for `ProjectTree.tsx`:**
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1. Wrap with `DndContext` at the `ProjectTree` level
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2. Each expanded project's diagram list gets a `SortableContext`
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3. Each diagram item uses `useSortable` hook for dragging
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4. Projects themselves act as droppable areas using `useDroppable`
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5. `onDragEnd` handler:
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- If dropped on a different project → PATCH diagram's `projectId`
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- If reordered within same project → POST to `/diagrams/reorder`
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**DnD data structure:**
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```typescript
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type DragData = {
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type: "diagram";
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diagram: DiagramResponse;
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sourceProjectId: string | null;
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};
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type DropData = {
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type: "project";
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projectId: string | null;
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};
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```
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**Optimistic updates:**
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- Use `queryClient.setQueryData(["diagrams"], ...)` for immediate UI feedback
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- Invalidate on mutation success/error
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- On error, revert to previous data via `onMutate` → return previous data → `onError` → rollback
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**Visual feedback:**
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- Drag overlay: semi-transparent card showing diagram title + type icon
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- Drop target: project row highlights with `ring-2 ring-primary/50` when a diagram is dragged over it
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- Sortable items: show insertion line indicator between items
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### Frontend — Empty State (Already Implemented)
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`EmptyDiagrams.tsx` already exists with:
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- Large icon (`Icons.LayoutDashboard`)
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- "No diagrams yet" heading
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- Description text about AI-assisted diagramming
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- "Create your first diagram" CTA button via `CreateDiagramDialog`
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**Verify:** `DiagramGrid.tsx` already checks `diagrams.length === 0` and renders `<EmptyDiagrams />`. No changes needed.
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### Project Structure Notes
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- `packages/db/src/schema/diagram.ts` — MODIFIED: add `sortOrder` column
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- `packages/api/src/modules/diagram/router.ts` — MODIFIED: extend PATCH schema, add POST /reorder, change ordering
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- `apps/web/src/modules/diagram/components/sidebar/RecentList.tsx` — MODIFIED: add AI preview subtitle
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- `apps/web/src/modules/diagram/components/sidebar/ProjectTree.tsx` — MODIFIED: add @dnd-kit DnD
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- `apps/web/src/modules/diagram/components/sidebar/DiagramSidebar.tsx` — MINOR: may need DndContext wrapper if shared across tabs
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- `packages/api/tests/diagram/` — NEW: reorder endpoint tests
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- Alignment: All paths match architecture doc patterns. Uses existing module structure.
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### Anti-Patterns to Avoid
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- **NEVER use HTML5 native DnD** — use @dnd-kit for accessible, cross-browser drag-and-drop with proper keyboard support
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- **NEVER update sortOrder client-side only** — always persist via API to ensure reload consistency
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- **NEVER allow non-owners to reorder** — the `/reorder` endpoint must verify ownership of ALL diagrams in the batch
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- **NEVER replace entire diagram list on reorder** — use granular sortOrder updates in a transaction
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- **DO NOT break existing 120 tests** — run full test suite after changes
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- **DO NOT add DnD to the DiagramGrid (main content area)** — DnD is only in the sidebar ProjectTree for v1
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- **DO NOT truncate lastAiMessage in the API** — truncation happens client-side for display flexibility
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- **DO NOT import `inArray` without adding it** — add `inArray` to the drizzle-orm import in router.ts
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### Previous Story Intelligence (Story 1.3)
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**Key learnings to carry forward:**
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- `DropdownMenu` preferred over `ContextMenu` for action menus (more discoverable, accessible)
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- Hono RPC client pattern: `api.diagrams[":id"].$patch({ param: { id }, json: { ... } })`
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- `toast()` from `sonner` for user feedback on mutations
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- React Query invalidation: `queryClient.invalidateQueries({ queryKey: ["diagrams"] })`
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- PATCH validation: use `.refine()` to require at least one field
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- `getOwnedDiagram()` helper extracts ownership check (reuse for reorder endpoint's bulk check)
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- 120 existing tests pass — don't break them
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- DiagramCard has inline rename, kebab menu, delete dialog — don't re-implement
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- `DiagramResponse` type exported from `DiagramCard.tsx` — reuse for DnD data typing
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- `diagramTypeConfig` and `timeAgo` exported from `DiagramCard.tsx` — already reused in RecentList and ProjectTree
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### Git Intelligence
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Recent commits (all Story 1.x):
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- `e9cd685 feat: implement Story 1.3 — diagram access control and management` — PATCH/DELETE endpoints, inline rename, 403 handling
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- `85e06c2 feat: implement Story 1.2 — organize diagrams into projects` — project CRUD, sidebar, ProjectTree
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- `392da38 feat: implement Story 1.1 — create and view diagrams` — diagram schema, CRUD, dashboard
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Established patterns:
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- Commit message: `feat: implement Story X.Y — description`
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- Co-located tests: `packages/api/tests/diagram/`
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- Zod schemas exported from router files
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- Feature code in `apps/web/src/modules/diagram/`
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### References
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- [Source: _bmad-output/planning-artifacts/epics.md#Story 1.4] — Full AC and technical notes
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- [Source: _bmad-output/planning-artifacts/architecture.md#Implementation Patterns] — Naming, structure, enforcement rules
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- [Source: _bmad-output/planning-artifacts/architecture.md#Enforcement Guidelines] — 7 mandatory rules for AI agents
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- [Source: _bmad-output/implementation-artifacts/1-3-diagram-access-control-and-management.md] — Previous story learnings
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- [Source: _bmad-output/project-context.md] — 62 critical implementation rules
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- [Source: packages/db/src/schema/diagram.ts] — Current diagram schema (lastAiMessage already exists, sortOrder to be added)
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- [Source: packages/api/src/modules/diagram/router.ts] — Current diagram router (GET, POST, PATCH, DELETE)
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- [Source: apps/web/src/modules/diagram/components/sidebar/ProjectTree.tsx] — Current sidebar tree (no DnD yet)
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- [Source: apps/web/src/modules/diagram/components/sidebar/RecentList.tsx] — Current recent list (no AI preview yet)
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- [Source: apps/web/src/modules/diagram/components/EmptyDiagrams.tsx] — Empty state (already implemented)
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## Dev Agent Record
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### Agent Model Used
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Claude Opus 4.6
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### Debug Log References
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- Migration generated but not applied (no local DB running) — migration file at `packages/db/migrations/0001_fuzzy_gorilla_man.sql`
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- Pre-existing test `diagram-db-schema.test.ts` had to be updated to include `sortOrder` in complete record test
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### Completion Notes List
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- All 6 tasks complete, all 141 tests pass, both API and web typechecks pass
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- `@dnd-kit/core`, `@dnd-kit/sortable`, `@dnd-kit/utilities` installed in `apps/web`
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- DndContext wraps entire ProjectTree; projects are droppable zones, diagram items are sortable
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- Cross-project drag uses PATCH `projectId`; intra-project reorder uses POST `/diagrams/reorder`
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- Optimistic updates via `queryClient.setQueryData` with invalidation on error
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- `/reorder` route placed before `/:id` to avoid route conflicts
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- DB migration pending application (DB not running locally)
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### Senior Developer Review (AI)
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**Reviewer:** Claude Opus 4.6 | **Date:** 2026-02-23
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**Issues Found:** 1 High, 4 Medium, 3 Low | **All HIGH + MEDIUM fixed**
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| # | Severity | Issue | Fix Applied |
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|---|----------|-------|-------------|
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| H1 | HIGH | GET ordering broke RecentList "Recent" semantics — sortOrder ASC was primary for all queries | sortOrder ordering now only applies when projectId is specified |
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| M1 | MEDIUM | No KeyboardSensor for keyboard DnD accessibility | Added KeyboardSensor + sortableKeyboardCoordinates |
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| M2 | MEDIUM | Missing duplicate ID validation in /reorder schema | Added .refine() for unique ID check + test |
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| M3 | MEDIUM | Placeholder tests (expect(true)) for reorder ownership | Replaced with real schema validation tests |
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| M4 | MEDIUM | N+1 sequential updates in /reorder transaction | Accepted for v1 (100-item cap) — noted for future optimization |
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| L1 | LOW | Story File List claimed wrong migration filename | Fixed in File List below |
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| L2 | LOW | Missing package.json + lockfile from File List | Fixed in File List below |
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| L3 | LOW | Triple-state overProjectId typing | Accepted — functional, cosmetic concern only |
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### File List
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- `packages/db/src/schema/diagram.ts` — added `sortOrder` column
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- `packages/db/migrations/0001_fuzzy_gorilla_man.sql` — migration for sortOrder column
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- `packages/db/migrations/meta/0000_snapshot.json` — updated migration metadata
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- `packages/db/migrations/meta/_journal.json` — updated migration journal
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- `packages/api/src/modules/diagram/router.ts` — extended PATCH schema, added POST /reorder with duplicate ID validation, context-aware GET ordering
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- `apps/web/src/modules/diagram/components/sidebar/RecentList.tsx` — AI preview subtitle
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- `apps/web/src/modules/diagram/components/sidebar/ProjectTree.tsx` — @dnd-kit drag-and-drop with keyboard + pointer sensors
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- `apps/web/package.json` — added @dnd-kit/core, @dnd-kit/sortable, @dnd-kit/utilities dependencies
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- `pnpm-lock.yaml` — updated lockfile
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- `packages/api/tests/diagram/diagram-access-control.test.ts` — extended with reorder + PATCH schema tests, replaced placeholder tests
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- `packages/api/tests/diagram/diagram-db-schema.test.ts` — fixed for sortOrder field
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@@ -45,7 +45,7 @@ development_status:
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1-1-create-and-view-diagrams: done
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1-2-organize-diagrams-into-projects: done
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1-3-diagram-access-control-and-management: done
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1-4-recent-view-and-drag-and-drop-organization: backlog
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1-4-recent-view-and-drag-and-drop-organization: done
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epic-1-retrospective: optional
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# ── Epic 2: Interactive Canvas & Diagram Types (Phase 2) ──
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Reference in New Issue
Block a user