fix(sanity): prevent unexpected release type picker mutation

packages/sanity/src/core/releases/__fixtures__/release.fixture.ts

@@ -10,7 +10,7 @@ export const activeScheduledRelease: ReleaseDocument = {
   metadata: {
     title: 'active Release',
     releaseType: 'scheduled',
-    intendedPublishAt: '2023-10-10T10:00:00Z',
+    intendedPublishAt: '2023-10-10T10:00:00.000Z',
     description: 'active Release description',
   },
 }

packages/sanity/src/core/releases/tool/detail/ReleaseTypePicker.tsx

@@ -71,7 +71,15 @@ export function ReleaseTypePicker(props: {release: NotArchivedRelease}): React.J
     if (open && !dialog) {
       const newRelease = {
         ...release,
-        metadata: {...release.metadata, intendedPublishAt: updatedDate, releaseType},
+        metadata: {
+          ...release.metadata,
+          releaseType,
+          ...(typeof updatedDate === 'undefined'
+            ? {}
+            : {
+                intendedPublishAt: updatedDate,
+              }),
+        },
       }
 
       if (!isEqual(newRelease, release)) {
@@ -127,12 +135,18 @@ export function ReleaseTypePicker(props: {release: NotArchivedRelease}): React.J
     return <ReleaseTime release={release} />
   }, [getReleaseTime, isPublishDateInPast, publishDate, release, tRelease])
 
-  const handleButtonReleaseTypeChange = useCallback((pickedReleaseType: ReleaseType) => {
-    setReleaseType(pickedReleaseType)
-    const nextPublishAt = pickedReleaseType === 'scheduled' ? startOfMinute(new Date()) : undefined
-    setIntendedPublishAt(nextPublishAt)
-    setIsIntendedScheduleDateInPast(true)
-  }, [])
+  const handleButtonReleaseTypeChange = useCallback(
+    (pickedReleaseType: ReleaseType) => {
+      setReleaseType(pickedReleaseType)
+      const nextPublishAt =
+        pickedReleaseType === 'scheduled'
+          ? (publishDate ?? startOfMinute(new Date()))
+          : (publishDate ?? undefined)
+      setIntendedPublishAt(nextPublishAt)
+      setIsIntendedScheduleDateInPast(true)
+    },
+    [publishDate],
+  )
 
   const handlePublishAtCalendarChange = useCallback(
     (date: Date | null) => {

packages/sanity/src/core/releases/tool/detail/__tests__/ReleaseTypePicker.test.tsx

@@ -183,13 +183,78 @@ describe('ReleaseTypePicker', () => {
         ...activeASAPRelease,
         metadata: expect.objectContaining({
           ...activeASAPRelease.metadata,
-          intendedPublishAt: undefined,
           releaseType: 'undecided',
         }),
       })
     })
   })
 
+  describe('noops if the release type is unchanged when the picker is closed', () => {
+    it('after returning to "ASAP" from "undecided"', async () => {
+      await renderComponent()
+
+      const pickerButton = screen.getByRole('button')
+      fireEvent.click(pickerButton)
+
+      const undecidedTab = within(screen.getByRole('tablist')).getByText('Undecided')
+      fireEvent.click(undecidedTab)
+
+      const asapTab = within(screen.getByRole('tablist')).getByText('ASAP')
+      fireEvent.click(asapTab)
+
+      fireEvent.click(screen.getByTestId('release-type-picker'))
+      fireEvent.click(pickerButton)
+
+      expect(mockUpdateRelease).not.toHaveBeenCalled()
+    })
+
+    it('after returning to "ASAP" from "at time"', async () => {
+      await renderComponent()
+
+      const pickerButton = screen.getByRole('button')
+      fireEvent.click(pickerButton)
+
+      const atTimeTab = within(screen.getByRole('tablist')).getByText('At time')
+      fireEvent.click(atTimeTab)
+
+      const asapTab = within(screen.getByRole('tablist')).getByText('ASAP')
+      fireEvent.click(asapTab)
+
+      fireEvent.click(screen.getByTestId('release-type-picker'))
+      fireEvent.click(pickerButton)
+
+      expect(mockUpdateRelease).not.toHaveBeenCalled()
+    })
+
+    it('after returning to "at time" from "ASAP" after the system time has incremented', async () => {
+      vi.useFakeTimers({shouldAdvanceTime: true})
+
+      const intendedPublishAt = new Date(activeScheduledRelease.metadata.intendedPublishAt ?? 0)
+
+      // 24 hours before `intendedPublishAt`.
+      vi.setSystemTime(new Date(intendedPublishAt.getTime() - 3_600 * 1_000 * 24))
+
+      await renderComponent(activeScheduledRelease)
+
+      const pickerButton = screen.getByRole('button')
+      fireEvent.click(pickerButton)
+
+      const asapTab = within(screen.getByRole('tablist')).getByText('ASAP')
+      fireEvent.click(asapTab)
+
+      // 23 hours before `intendedPublishAt` (one hour after picker opened).
+      vi.setSystemTime(new Date(intendedPublishAt.getTime() - 3_600 * 1_000 * 23))
+
+      const atTimeTab = within(screen.getByRole('tablist')).getByText('At time')
+      fireEvent.click(atTimeTab)
+
+      fireEvent.click(pickerButton)
+
+      expect(mockUpdateRelease).not.toHaveBeenCalled()
+      vi.useRealTimers()
+    })
+  })
+
   describe('picker behavior based on release state', () => {
     it('does not show button for picker when release is published state', async () => {
       await renderComponent(publishedASAPRelease)