Implement upsert label flow and use-based mark gone handling

tests/api/stock.test.js

@@ -0,0 +1,161 @@
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+
+const apiRequestMock = vi.fn();
+
+vi.mock('../../src/api/client.js', () => ({
+  getPath(key) {
+    const paths = {
+      items: 'kitchen/items',
+      changes: 'kitchen/changes',
+    };
+    return paths[key];
+  },
+  apiRequest: (...args) => apiRequestMock(...args),
+}));
+
+const {
+  applyItemUpsert,
+  listKitchenChanges,
+  previewItemUpsert,
+  useStockItem,
+} = await import('../../src/api/stock.js');
+
+describe('api/stock', () => {
+  beforeEach(() => {
+    apiRequestMock.mockReset();
+  });
+
+  it('listKitchenChanges returns normalized changes payload', async () => {
+    apiRequestMock.mockResolvedValueOnce({
+      since: 'cursor-1',
+      next_cursor: 'cursor-2',
+      changes: [{ type: 'item', action: 'upsert', timestamp: '2026-04-10T10:00:00Z' }],
+    });
+
+    const result = await listKitchenChanges({ config: { database: 'db' } }, { limit: 10 });
+
+    expect(result).toEqual({
+      since: 'cursor-1',
+      nextCursor: 'cursor-2',
+      changes: [{ type: 'item', action: 'upsert', timestamp: '2026-04-10T10:00:00Z' }],
+    });
+    expect(apiRequestMock).toHaveBeenCalledWith(
+      { config: { database: 'db' } },
+      'kitchen/changes',
+      { query: { since: undefined, limit: 10 } },
+    );
+  });
+
+  it('listKitchenChanges falls back to empty shape when changes are missing', async () => {
+    apiRequestMock.mockResolvedValueOnce({});
+
+    const result = await listKitchenChanges({ config: { database: 'db' } }, {});
+
+    expect(result).toEqual({
+      since: null,
+      nextCursor: null,
+      changes: [],
+    });
+  });
+
+  it('previewItemUpsert normalizes preview response', async () => {
+    apiRequestMock.mockResolvedValueOnce({
+      status: 'ok',
+      mode: 'preview',
+      operation: 'update',
+      match_type: 'uuid_b64',
+      matched_item: { uuid_b64: 'abc', name: 'Rice' },
+      payload: { name: 'Rice' },
+    });
+
+    const response = await previewItemUpsert({ config: { database: 'db' } }, { item: { name: 'Rice' } });
+
+    expect(response).toEqual({
+      status: 'ok',
+      mode: 'preview',
+      operation: 'update',
+      matchType: 'uuid_b64',
+      matchedItem: { uuid_b64: 'abc', name: 'Rice' },
+      item: null,
+      payload: { name: 'Rice' },
+    });
+    expect(apiRequestMock).toHaveBeenCalledWith(
+      { config: { database: 'db' } },
+      'kitchen/items/upsert',
+      {
+        method: 'POST',
+        body: { item: { name: 'Rice' } },
+        query: { mode: 'preview' },
+      },
+    );
+  });
+
+  it('applyItemUpsert normalizes apply response', async () => {
+    apiRequestMock.mockResolvedValueOnce({
+      status: 'ok',
+      mode: 'apply',
+      operation: 'create',
+      match_type: null,
+      item: { uuid_b64: 'new1', name: 'Beans' },
+    });
+
+    const response = await applyItemUpsert({ config: { database: 'db' } }, { item: { name: 'Beans' } });
+
+    expect(response).toEqual({
+      status: 'ok',
+      mode: 'apply',
+      operation: 'create',
+      matchType: null,
+      matchedItem: null,
+      item: { uuid_b64: 'new1', name: 'Beans' },
+      payload: null,
+    });
+  });
+
+  it('useStockItem returns used on 204', async () => {
+    apiRequestMock.mockResolvedValueOnce(null);
+
+    const result = await useStockItem({ config: { database: 'db' } }, 'item-1');
+
+    expect(result).toEqual({ status: 'used' });
+    expect(apiRequestMock).toHaveBeenCalledWith(
+      { config: { database: 'db' } },
+      'kitchen/items/item-1/use',
+      { method: 'POST' },
+    );
+  });
+
+  it('useStockItem returns already_gone on 409', async () => {
+    apiRequestMock.mockRejectedValueOnce({ status: 409, message: 'Item is out of stock.' });
+
+    const result = await useStockItem({ config: { database: 'db' } }, 'item-1');
+
+    expect(result).toEqual({ status: 'already_gone' });
+  });
+
+  it('useStockItem falls back to delete on 404/405', async () => {
+    apiRequestMock
+      .mockRejectedValueOnce({ status: 404 })
+      .mockResolvedValueOnce(null);
+
+    const result = await useStockItem({ config: { database: 'db' } }, 'item-1');
+
+    expect(result).toEqual({ status: 'fallback_delete' });
+    expect(apiRequestMock).toHaveBeenNthCalledWith(
+      2,
+      { config: { database: 'db' } },
+      'kitchen/items/item-1',
+      { method: 'DELETE' },
+    );
+  });
+
+  it('useStockItem does not fallback on unrelated client errors', async () => {
+    apiRequestMock.mockRejectedValueOnce({ status: 422, message: 'validation_error' });
+
+    await expect(useStockItem({ config: { database: 'db' } }, 'item-1')).rejects.toMatchObject({
+      status: 422,
+      message: 'validation_error',
+    });
+    expect(apiRequestMock).toHaveBeenCalledTimes(1);
+  });
+});