From b7eff33f90a0782e791066a75e91f11fafe6be18 Mon Sep 17 00:00:00 2001
From: Sergey Katsubo <skatsubo@gmail.com>
Date: Fri, 17 Apr 2026 15:56:39 +0300
Subject: [PATCH] chore(web): refactor date section of asset viewer (#24514)

Co-authored-by: Daniel Dietzler <mail@ddietzler.dev>
---
 .../web/asset-viewer/detail-panel.e2e-spec.ts | 42 ++++++++-
 e2e/test-assets                               |  2 +-
 .../asset-viewer/detail-panel-date.svelte     | 86 +++++++++++++++++++
 .../asset-viewer/detail-panel.svelte          | 84 +-----------------
 4 files changed, 131 insertions(+), 83 deletions(-)
 create mode 100644 web/src/lib/components/asset-viewer/detail-panel-date.svelte

diff --git a/e2e/src/specs/web/asset-viewer/detail-panel.e2e-spec.ts b/e2e/src/specs/web/asset-viewer/detail-panel.e2e-spec.ts
index 2f90e4e3d8..bbe0ef328f 100644
--- a/e2e/src/specs/web/asset-viewer/detail-panel.e2e-spec.ts
+++ b/e2e/src/specs/web/asset-viewer/detail-panel.e2e-spec.ts
@@ -1,7 +1,9 @@
 import { AssetMediaResponseDto, LoginResponseDto, SharedLinkType } from '@immich/sdk';
 import { expect, test } from '@playwright/test';
+import { readFile } from 'node:fs/promises';
+import { basename, join } from 'node:path';
 import type { Socket } from 'socket.io-client';
-import { utils } from 'src/utils';
+import { testAssetDir, utils } from 'src/utils';
 
 test.describe('Detail Panel', () => {
   let admin: LoginResponseDto;
@@ -83,4 +85,42 @@ test.describe('Detail Panel', () => {
     await utils.waitForWebsocketEvent({ event: 'assetUpdate', id: asset.id });
     await expect(textarea).toHaveValue('new description');
   });
+
+  test.describe('Date editor', () => {
+    test('displays inferred asset timezone', async ({ context, page }) => {
+      const test = {
+        filepath: 'metadata/dates/datetimeoriginal-gps.jpg',
+        expected: {
+          dateTime: '2025-12-01T11:30',
+          // Test with a timezone which is NOT the first among timezones with the same offset
+          // This is to check that the editor does not simply fall back to the first available timezone with that offset
+          // America/Denver (-07:00) is not the first among timezones with offset -07:00
+          timeZoneWithOffset: 'America/Denver (-07:00)',
+        },
+      };
+
+      const asset = await utils.createAsset(admin.accessToken, {
+        assetData: {
+          bytes: await readFile(join(testAssetDir, test.filepath)),
+          filename: basename(test.filepath),
+        },
+      });
+
+      await utils.waitForWebsocketEvent({ event: 'assetUpload', id: asset.id });
+
+      // asset viewer -> detail panel -> date editor
+      await utils.setAuthCookies(context, admin.accessToken);
+      await page.goto(`/photos/${asset.id}`);
+      await page.waitForSelector('#immich-asset-viewer');
+
+      await page.getByRole('button', { name: 'Info' }).click();
+      await page.getByTestId('detail-panel-edit-date-button').click();
+      await page.waitForSelector('[role="dialog"]');
+
+      const datetime = page.locator('#datetime');
+      await expect(datetime).toHaveValue(test.expected.dateTime);
+      const timezone = page.getByRole('combobox', { name: 'Timezone' });
+      await expect(timezone).toHaveValue(test.expected.timeZoneWithOffset);
+    });
+  });
 });
diff --git a/e2e/test-assets b/e2e/test-assets
index 163c251744..0eac5a3738 160000
--- a/e2e/test-assets
+++ b/e2e/test-assets
@@ -1 +1 @@
-Subproject commit 163c251744e0a35d7ecfd02682452043f149fc2b
+Subproject commit 0eac5a37384c151be88381b41f9e28d8d59a4466
diff --git a/web/src/lib/components/asset-viewer/detail-panel-date.svelte b/web/src/lib/components/asset-viewer/detail-panel-date.svelte
new file mode 100644
index 0000000000..f5e85112bc
--- /dev/null
+++ b/web/src/lib/components/asset-viewer/detail-panel-date.svelte
@@ -0,0 +1,86 @@
+<script lang="ts">
+  import { authManager } from '$lib/managers/auth-manager.svelte';
+  import AssetChangeDateModal from '$lib/modals/AssetChangeDateModal.svelte';
+  import { locale } from '$lib/stores/preferences.store';
+  import { fromISODateTime, fromISODateTimeUTC, toTimelineAsset } from '$lib/utils/timeline-util';
+  import { type AssetResponseDto } from '@immich/sdk';
+  import { Icon, modalManager } from '@immich/ui';
+  import { mdiCalendar, mdiPencil } from '@mdi/js';
+  import { t } from 'svelte-i18n';
+
+  type Props = {
+    asset: AssetResponseDto;
+  };
+
+  const { asset }: Props = $props();
+
+  const timeZone = $derived(asset.exifInfo?.timeZone ?? undefined);
+  const dateTime = $derived(
+    timeZone && asset.exifInfo?.dateTimeOriginal
+      ? fromISODateTime(asset.exifInfo.dateTimeOriginal, timeZone)
+      : fromISODateTimeUTC(asset.localDateTime),
+  );
+  const isOwner = $derived(authManager.authenticated && asset.ownerId === authManager.user.id);
+
+  const handleChangeDate = async () => {
+    if (!isOwner) {
+      return;
+    }
+
+    await modalManager.show(AssetChangeDateModal, {
+      asset: toTimelineAsset(asset),
+      initialDate: dateTime,
+      initialTimeZone: timeZone,
+    });
+  };
+</script>
+
+{#if dateTime}
+  <button
+    type="button"
+    class="flex w-full text-start justify-between place-items-start gap-4 py-4"
+    onclick={handleChangeDate}
+    title={isOwner ? $t('edit_date') : ''}
+    class:hover:text-primary={isOwner}
+    data-testid="detail-panel-edit-date-button"
+  >
+    <div class="flex gap-4">
+      <Icon icon={mdiCalendar} size="24" />
+
+      <div>
+        <p>
+          {dateTime.toLocaleString({ month: 'short', day: 'numeric', year: 'numeric' }, { locale: $locale })}
+        </p>
+        <div class="flex gap-2 text-sm">
+          <p>
+            {dateTime.toLocaleString(
+              {
+                weekday: 'short',
+                hour: 'numeric',
+                minute: '2-digit',
+                second: '2-digit',
+                timeZoneName: timeZone ? 'longOffset' : undefined,
+              },
+              { locale: $locale },
+            )}
+          </p>
+        </div>
+      </div>
+    </div>
+
+    {#if isOwner}
+      <div class="p-1">
+        <Icon icon={mdiPencil} size="20" />
+      </div>
+    {/if}
+  </button>
+{:else if !dateTime && isOwner}
+  <div class="flex justify-between place-items-start gap-4 py-4">
+    <div class="flex gap-4">
+      <Icon icon={mdiCalendar} size="24" />
+    </div>
+    <div class="p-1">
+      <Icon icon={mdiPencil} size="20" />
+    </div>
+  </div>
+{/if}
diff --git a/web/src/lib/components/asset-viewer/detail-panel.svelte b/web/src/lib/components/asset-viewer/detail-panel.svelte
index 7cb486c5a6..ed31a4b44f 100644
--- a/web/src/lib/components/asset-viewer/detail-panel.svelte
+++ b/web/src/lib/components/asset-viewer/detail-panel.svelte
@@ -1,5 +1,6 @@
 <script lang="ts">
   import { goto } from '$app/navigation';
+  import DetailPanelDate from '$lib/components/asset-viewer/detail-panel-date.svelte';
   import DetailPanelDescription from '$lib/components/asset-viewer/detail-panel-description.svelte';
   import DetailPanelLocation from '$lib/components/asset-viewer/detail-panel-location.svelte';
   import DetailPanelRating from '$lib/components/asset-viewer/detail-panel-star-rating.svelte';
@@ -8,7 +9,6 @@
   import { assetViewerManager } from '$lib/managers/asset-viewer-manager.svelte';
   import { authManager } from '$lib/managers/auth-manager.svelte';
   import { featureFlagsManager } from '$lib/managers/feature-flags-manager.svelte';
-  import AssetChangeDateModal from '$lib/modals/AssetChangeDateModal.svelte';
   import { Route } from '$lib/route';
   import { boundingBoxesArray } from '$lib/stores/people.store';
   import { locale } from '$lib/stores/preferences.store';
@@ -16,7 +16,6 @@
   import { delay, getDimensions } from '$lib/utils/asset-utils';
   import { getByteUnitString } from '$lib/utils/byte-units';
   import { handleError } from '$lib/utils/handle-error';
-  import { fromISODateTime, fromISODateTimeUTC, toTimelineAsset } from '$lib/utils/timeline-util';
   import { getParentPath } from '$lib/utils/tree-utils';
   import {
     AssetMediaSize,
@@ -25,9 +24,8 @@
     type AlbumResponseDto,
     type AssetResponseDto,
   } from '@immich/sdk';
-  import { Icon, IconButton, LoadingSpinner, modalManager, Text } from '@immich/ui';
+  import { Icon, IconButton, LoadingSpinner, Text } from '@immich/ui';
   import {
-    mdiCalendar,
     mdiCamera,
     mdiCameraIris,
     mdiClose,
@@ -59,12 +57,6 @@
   let people = $derived(asset.people || []);
   let unassignedFaces = $derived(asset.unassignedFaces || []);
   let showingHiddenPeople = $state(false);
-  let timeZone = $derived(asset.exifInfo?.timeZone ?? undefined);
-  let dateTime = $derived(
-    timeZone && asset.exifInfo?.dateTimeOriginal
-      ? fromISODateTime(asset.exifInfo.dateTimeOriginal, timeZone)
-      : fromISODateTimeUTC(asset.localDateTime),
-  );
   let latlng = $derived(
     (() => {
       const lat = asset.exifInfo?.latitude;
@@ -126,18 +118,6 @@
     // Remove the last part of the path to get the parent path
     return Route.folders({ path: getParentPath(asset.originalPath) });
   };
-
-  const handleChangeDate = async () => {
-    if (!isOwner) {
-      return;
-    }
-
-    await modalManager.show(AssetChangeDateModal, {
-      asset: toTimelineAsset(asset),
-      initialDate: dateTime,
-      initialTimeZone: timeZone,
-    });
-  };
 </script>
 
 <OnEvents onAlbumAddAssets={() => (albums = refreshAlbums())} />
@@ -291,65 +271,7 @@
       <Text size="small" color="muted">{$t('no_exif_info_available')}</Text>
     {/if}
 
-    {#if dateTime}
-      <button
-        type="button"
-        class="flex w-full text-start justify-between place-items-start gap-4 py-4"
-        onclick={handleChangeDate}
-        title={isOwner ? $t('edit_date') : ''}
-        class:hover:text-primary={isOwner}
-      >
-        <div class="flex gap-4">
-          <div>
-            <Icon icon={mdiCalendar} size="24" />
-          </div>
-
-          <div>
-            <p>
-              {dateTime.toLocaleString(
-                {
-                  month: 'short',
-                  day: 'numeric',
-                  year: 'numeric',
-                },
-                { locale: $locale },
-              )}
-            </p>
-            <div class="flex gap-2 text-sm">
-              <p>
-                {dateTime.toLocaleString(
-                  {
-                    weekday: 'short',
-                    hour: 'numeric',
-                    minute: '2-digit',
-                    second: '2-digit',
-                    timeZoneName: timeZone ? 'longOffset' : undefined,
-                  },
-                  { locale: $locale },
-                )}
-              </p>
-            </div>
-          </div>
-        </div>
-
-        {#if isOwner}
-          <div class="p-1">
-            <Icon icon={mdiPencil} size="20" />
-          </div>
-        {/if}
-      </button>
-    {:else if !dateTime && isOwner}
-      <div class="flex justify-between place-items-start gap-4 py-4">
-        <div class="flex gap-4">
-          <div>
-            <Icon icon={mdiCalendar} size="24" />
-          </div>
-        </div>
-        <div class="p-1">
-          <Icon icon={mdiPencil} size="20" />
-        </div>
-      </div>
-    {/if}
+    <DetailPanelDate {asset} />
 
     <div class="flex gap-4 py-4">
       <div><Icon icon={mdiImageOutline} size="24" /></div>