#399

backend/app/controllers/posts_controller.rb

@@ -216,7 +216,8 @@ class PostsController < ApplicationController
 
     preflight = PostCreatePreflight.new(
         attributes: post_create_attributes,
-        thumbnail: params[:thumbnail]).run
+        thumbnail: params[:thumbnail],
+        host: request.base_url).run
     return render json: dry_run_json(preflight) if bool?(:dry)
     if preflight[:existing_post_id].present?
       post = Post.new(url: preflight[:url])
@@ -273,7 +274,11 @@ class PostsController < ApplicationController
     return head :payload_too_large if request.content_length.to_i > MAX_BULK_REQUEST_BYTES
     posts = parse_bulk_posts_manifest
     thumbnails = parse_bulk_thumbnails(posts.length)
-    result = PostBulkCreator.new(actor: current_user, posts:, thumbnails:).run
+    result = PostBulkCreator.new(
+        actor: current_user,
+        posts:,
+        thumbnails:,
+        host: request.base_url).run
     render json: result
   rescue JSON::ParserError
     render_bad_request 'posts manifest の JSON が不正です．'
@@ -627,7 +632,7 @@ class PostsController < ApplicationController
     return nil if post_id.blank?
 
     post = Post.with_attached_thumbnail.find_by(id: post_id)
-    PostCompactRepr.base(post)
+    PostCompactRepr.base(post, host: request.base_url)
   end
 
   def dry_run_json preflight

backend/app/representations/post_compact_repr.rb

@@ -4,11 +4,11 @@
 module PostCompactRepr
   module_function
 
-  def base post
+  def base post, host: nil
     return nil if post.nil?
 
     PostRepr
-        .common(post)
+        .common(post, host:)
         .slice(
             'id',
             'title',

backend/app/representations/post_repr.rb

@@ -17,8 +17,13 @@ module PostRepr
 
   module_function
 
-  def base post, current_user = nil
-    json = common(post)
+  def base post, current_user = nil, host: nil
+    json =
+        if host.present?
+          common(post, host:)
+        else
+          common(post)
+        end
     json['tags'] = tag_json(post)
     json['uploaded_user'] = post.uploaded_user && UserRepr.base(post.uploaded_user)
     json['viewed'] = current_user ? current_user.viewed?(post) : false
@@ -26,31 +31,59 @@ module PostRepr
   end
 
   def detail post, current_user = nil, parent_posts: [], child_posts: [],
-             sibling_posts: { }, related: []
-    base(post, current_user).merge(
-        'parent_posts' => cards(parent_posts),
-        'child_posts' => cards(child_posts),
-        'sibling_posts' => sibling_posts.transform_keys(&:to_s).transform_values { |posts|
-          cards(posts)
-        },
-        'related' => cards(related))
+             sibling_posts: { }, related: [], host: nil
+    if host.present?
+      base(post, current_user, host:).merge(
+          'parent_posts' => cards(parent_posts, host:),
+          'child_posts' => cards(child_posts, host:),
+          'sibling_posts' => sibling_posts.transform_keys(&:to_s).transform_values { |posts|
+            cards(posts, host:)
+          },
+          'related' => cards(related, host:))
+    else
+      base(post, current_user).merge(
+          'parent_posts' => cards(parent_posts),
+          'child_posts' => cards(child_posts),
+          'sibling_posts' => sibling_posts.transform_keys(&:to_s).transform_values { |posts|
+            cards(posts)
+          },
+          'related' => cards(related))
+    end
   end
 
-  def card post
-    common(post).merge('parent_posts' => [], 'child_posts' => [])
+  def card post, host: nil
+    if host.present?
+      common(post, host:).merge('parent_posts' => [], 'child_posts' => [])
+    else
+      common(post).merge('parent_posts' => [], 'child_posts' => [])
+    end
   end
 
-  def cards posts
-    posts.map { |post| card(post) }
+  def cards posts, host: nil
+    if host.present?
+      posts.map { |post| card(post, host:) }
+    else
+      posts.map { |post| card(post) }
+    end
   end
 
-  def many posts, current_user = nil
-    posts.map { |p| base(p, current_user) }
+  def many posts, current_user = nil, host: nil
+    if host.present?
+      posts.map { |p| base(p, current_user, host:) }
+    else
+      posts.map { |p| base(p, current_user) }
+    end
   end
 
-  def common post
+  def common post, host: nil
     BASE_FIELDS.to_h { |field| [field.to_s, post.public_send(field)] }
-               .merge('thumbnail' => thumbnail_url(post))
+               .merge(
+                   'thumbnail' =>
+                       if host.present?
+                         thumbnail_url(post, host:)
+                       else
+                         thumbnail_url(post)
+                       end)
   end
 
   def tag_json post
@@ -65,10 +98,13 @@ module PostRepr
     }
   end
 
-  def thumbnail_url post
+  def thumbnail_url post, host: nil
     return nil unless post.thumbnail.attached?
 
-    Rails.application.routes.url_helpers.rails_blob_url(post.thumbnail, only_path: false)
+    options = { only_path: false }
+    options[:host] = host if host.present?
+
+    Rails.application.routes.url_helpers.rails_storage_proxy_url(post.thumbnail, **options)
   rescue ActionController::UrlGenerationError, ArgumentError, URI::InvalidURIError => e
     Rails.logger.warn(
         "PostRepr.thumbnail_url failed post_id=#{post.id} " \

backend/app/services/post_bulk_creator.rb

@@ -1,8 +1,9 @@
 class PostBulkCreator
-  def initialize actor:, posts:, thumbnails:
+  def initialize actor:, posts:, thumbnails:, host: nil
     @actor_id = actor.id
     @posts = posts
     @thumbnails = thumbnails
+    @host = host
   end
 
   def run
@@ -64,7 +65,8 @@ class PostBulkCreator
     preflight =
         PostCreatePreflight.new(
             attributes: attributes,
-            thumbnail: thumbnail_for(index, attributes)).run
+            thumbnail: thumbnail_for(index, attributes),
+            host: @host).run
     if preflight[:existing_post_id].present?
       return {
           status: 'skipped',
@@ -195,6 +197,6 @@ class PostBulkCreator
   end
 
   def compact_existing_post post
-    PostCompactRepr.base(post)
+    PostCompactRepr.base(post, host: @host)
   end
 end

backend/app/services/post_create_preflight.rb

@@ -9,9 +9,10 @@ class PostCreatePreflight
     end
   end
 
-  def initialize attributes:, thumbnail: nil
+  def initialize attributes:, thumbnail: nil, host: nil
     @attributes = attributes.symbolize_keys
     @thumbnail = thumbnail
+    @host = host
   end
 
   def run
@@ -124,7 +125,7 @@ class PostCreatePreflight
     return nil if post_id.blank?
 
     post = Post.with_attached_thumbnail.find_by(id: post_id)
-    PostCompactRepr.base(post)
+    PostCompactRepr.base(post, host: @host)
   end
 
   def final_field_warnings field_warnings

frontend/src/App.tsx

@@ -1,8 +1,9 @@
 import { AnimatePresence, LayoutGroup, MotionConfig, motion } from 'framer-motion'
 import { Fragment, useEffect, useMemo, useState } from 'react'
-import { BrowserRouter,
+import { createBrowserRouter,
 	 Navigate,
 	 Route,
+	 RouterProvider,
 	 Routes,
 	 useLocation } from 'react-router-dom'
 
@@ -154,7 +155,7 @@ const PostDetailRoute = ({ user }: { user: User | null }) => {
 }
 
 
-const App: FC = () => {
+const RoutedApp: FC = () => {
   const [user, setUser] = useState<User | null> (null)
   const [status, setStatus] = useState (200)
   const behaviourSettings = useClientBehaviourSettings ()
@@ -253,42 +254,46 @@ const App: FC = () => {
   }
 
   return (
-      <>
-	<RouteBlockerOverlay/>
-	{import.meta.env.DEV && <DevModeWatermark/>}
+      <DialogueProvider>
+	<UnsavedChangesGuardProvider>
+	  <KeyboardShortcutsProvider>
+	  <MotionConfig
+	      reducedMotion={
+		  animationMode === 'normal'
+		  ? 'never'
+		  : animationMode === 'reduced'
+		    ? 'user'
+		    : 'always'
+	      }>
+	    <LayoutWrapper>
+	      <motion.div
+		  layout={animationMode === 'off' ? false : 'position'}
+		  transition={{ layout: appLayoutTransition }}
+		  className="relative flex h-dvh w-full flex-col overflow-y-hidden">
+		<TopNav user={user}/>
+		<RouteTransitionWrapper
+		    animationMode={animationMode}
+		    user={user}
+		    setUser={setUser}/>
+	      </motion.div>
+	    </LayoutWrapper>
+	  </MotionConfig>
 
-	<BrowserRouter>
-	  <DialogueProvider>
-	    <UnsavedChangesGuardProvider>
-	      <KeyboardShortcutsProvider>
-	      <MotionConfig
-		  reducedMotion={
-		      animationMode === 'normal'
-		      ? 'never'
-		      : animationMode === 'reduced'
-			? 'user'
-			: 'always'
-		  }>
-		<LayoutWrapper>
-		  <motion.div
-		      layout={animationMode === 'off' ? false : 'position'}
-		      transition={{ layout: appLayoutTransition }}
-		      className="relative flex flex-col h-dvh w-full overflow-y-hidden">
-		    <TopNav user={user}/>
-		    <RouteTransitionWrapper
-			animationMode={animationMode}
-			user={user}
-			setUser={setUser}/>
-		  </motion.div>
-		</LayoutWrapper>
-	      </MotionConfig>
-
-	      <Toaster/>
-	      </KeyboardShortcutsProvider>
-	    </UnsavedChangesGuardProvider>
-	  </DialogueProvider>
-	</BrowserRouter>
-      </>)
+	  <Toaster/>
+	  </KeyboardShortcutsProvider>
+	</UnsavedChangesGuardProvider>
+      </DialogueProvider>)
 }
 
+const router = createBrowserRouter ([{
+    path: '*',
+    element: <RoutedApp/> }])
+
+const App: FC = () => (
+    <>
+      <RouteBlockerOverlay/>
+      {import.meta.env.DEV && <DevModeWatermark/>}
+      <RouterProvider router={router}/>
+    </>)
+
 export default App

frontend/src/components/PrefetchLink.tsx

@@ -6,7 +6,6 @@ import { createPath, useNavigate } from 'react-router-dom'
 import { useOverlayStore } from '@/components/RouteBlockerOverlay'
 import { prefetchForURL } from '@/lib/prefetchers'
 import { useClientBehaviourSettings } from '@/lib/useClientBehaviourSettings'
-import { useUnsavedChangesGuard } from '@/lib/useUnsavedChangesGuard'
 import { cn } from '@/lib/utils'
 
 import type { AnchorHTMLAttributes, MouseEvent, TouchEvent } from 'react'
@@ -36,7 +35,6 @@ export default forwardRef<HTMLAnchorElement, Props> (({
   const navigate = useNavigate ()
   const qc = useQueryClient ()
   const behaviourSettings = useClientBehaviourSettings ()
-  const { confirmDiscardNavigation } = useUnsavedChangesGuard ()
   const linkPreloadMode = behaviourSettings.linkPreload ?? 'intent'
   const path = useMemo (
       () => typeof to === 'string' ? to : createPath (to),
@@ -45,10 +43,6 @@ export default forwardRef<HTMLAnchorElement, Props> (({
   const url = useMemo (() => {
     return (new URL (path, window.location.origin)).toString ()
   }, [path])
-  const nextPathname = useMemo (
-      () => (new URL (path, window.location.origin)).pathname,
-      [path],
-  )
   const setOverlay = useOverlayStore (s => s.setActive)
 
   const doPrefetch = async () => {
@@ -93,13 +87,6 @@ export default forwardRef<HTMLAnchorElement, Props> (({
 
       ev.preventDefault ()
 
-      if (nextPathname !== window.location.pathname)
-	{
-	  const confirmed = await confirmDiscardNavigation ()
-	  if (!(confirmed))
-	    return
-	}
-
       flushSync (() => {
 	setOverlay (true)
       })

frontend/src/components/posts/import/PostImportRowForm.tsx

@@ -10,8 +10,8 @@ import { hasThumbnailBaseValue, hasVideoTag } from '@/lib/postImportRows'
 
 import type { FC } from 'react'
 
-import type { PostImportEditableDraft, PostImportRow } from '@/lib/postImportSession'
 import type { DialogueFormControls } from '@/lib/dialogues/useDialogue'
+import type { PostImportEditableDraft, PostImportRow } from '@/lib/postImportTypes'
 
 type Draft = PostImportEditableDraft
 

frontend/src/components/posts/import/PostImportRowSummary.tsx

@@ -4,13 +4,16 @@ import { Button } from '@/components/ui/button'
 import PostImportThumbnailPreview from '@/components/posts/import/PostImportThumbnailPreview'
 import PostImportStatusBadge from '@/components/posts/import/PostImportStatusBadge'
 import { displayPostImportStatus } from '@/components/posts/import/postImportRowStatus'
-import { hasVideoTag } from '@/lib/postImportSession'
-import { canEditReviewRow, canRetryResultRow } from '@/lib/postImportSession'
+import {
+    canEditReviewRow,
+    canRetryResultRow,
+    hasVideoTag,
+} from '@/lib/postImportRows'
 import { cn, originalCreatedAtString } from '@/lib/utils'
 
 import type { FC } from 'react'
 
-import type { PostImportRow } from '@/lib/postImportSession'
+import type { PostImportRow } from '@/lib/postImportTypes'
 
 type Props = {
     row:              PostImportRow

frontend/src/components/posts/import/postImportRowStatus.ts

@@ -1,4 +1,4 @@
-import type { PostImportRow } from '@/lib/postImportSession'
+import type { PostImportRow } from '@/lib/postImportTypes'
 
 export type PostImportDisplayStatus =
     'ready'

frontend/src/lib/postImportRows.ts

@@ -226,11 +226,6 @@ export const buildNextEditedRow = (
 	    ? 'manual'
 	    : (editingRow.provenance[field] ?? 'automatic')
     })
-    if (nextProvenance.duration === 'manual')
-      {
-	nextAttributes.videoMs = ''
-	nextProvenance.videoMs = 'manual'
-      }
     nextAttributes.tags = draft.tags
     if (isManualChange (editingRow.attributes.tags, draft.tags))
       {

frontend/src/lib/postImportSession.ts

@@ -1,4 +0,0 @@
-export * from '@/lib/postImportTypes'
-export * from '@/lib/postImportStorage'
-export * from '@/lib/postImportSourceValidation'
-export * from '@/lib/postImportRows'

frontend/src/lib/useKeyboardShortcuts.tsx

@@ -25,7 +25,6 @@ import {
     getEffectiveKeyBindings,
     setClientKeyboardSettings,
 } from '@/lib/settings'
-import { useUnsavedChangesGuard } from '@/lib/useUnsavedChangesGuard'
 
 import type {
     KeyBinding,
@@ -97,7 +96,6 @@ const focusSearchTarget = (): void => {
 export const KeyboardShortcutsProvider = ({ children }: PropsWithChildren) => {
   const location = useLocation ()
   const navigate = useNavigate ()
-  const { confirmDiscardNavigation } = useUnsavedChangesGuard ()
 
   const [keyboardSettings, setKeyboardSettingsState] =
       useState<ClientKeyboardSettings> (() => getClientKeyboardSettings ())
@@ -149,11 +147,8 @@ export const KeyboardShortcutsProvider = ({ children }: PropsWithChildren) => {
   }, [])
 
   const guardedNavigate = useCallback ((path: string) => {
-    confirmDiscardNavigation ().then (confirmed => {
-      if (confirmed)
-	navigate (path)
-    })
-  }, [confirmDiscardNavigation, navigate])
+    navigate (path)
+  }, [navigate])
 
   const builtinHandlers = useMemo<ShortcutHandlers> (
       () => ({

frontend/src/lib/useUnsavedChangesGuard.tsx

@@ -7,7 +7,7 @@ import {
     useRef,
     useState,
 } from 'react'
-import { useBlocker, useLocation } from 'react-router-dom'
+import { useBlocker } from 'react-router-dom'
 
 import { useDialogue } from '@/lib/dialogues/useDialogue'
 
@@ -22,12 +22,11 @@ type UseUnsavedChangesGuardOptions = {
     onDiscard?: () => void | Promise<void> }
 
 type UnsavedChangesGuardContextValue = {
-    hasUnsavedChanges:             boolean
-    registerUnsavedChangesSource:  (
-	source: UnsavedChangesSource | null,
-    ) => void
-    confirmDiscardNavigation:      () => Promise<boolean>
-    allowNextNavigation:           () => void }
+    hasUnsavedChanges:            boolean
+    registerUnsavedChangesSource: (
+        source: UnsavedChangesSource,
+    ) => () => void
+    allowNextNavigation:          () => void }
 
 const UnsavedChangesGuardContext =
     createContext<UnsavedChangesGuardContextValue | null> (null)
@@ -35,67 +34,119 @@ const UnsavedChangesGuardContext =
 
 export const UnsavedChangesGuardProvider: FC<PropsWithChildren> = ({ children }) => {
   const dialogue = useDialogue ()
-  const location = useLocation ()
-  const [source, setSource] = useState<UnsavedChangesSource | null> (null)
-  const bypassNextNavigationRef = useRef (false)
+  const sourcesRef = useRef (new Map<symbol, UnsavedChangesSource> ())
+  const bypassNextNavigationRef = useRef<symbol | null> (null)
+  const [revision, setRevision] = useState (0)
+  const dialogueOpenRef = useRef (false)
 
   const registerUnsavedChangesSource = useCallback ((
-      nextSource: UnsavedChangesSource | null,
-  ) => {
-    setSource (nextSource)
+      source: UnsavedChangesSource,
+  ): (() => void) => {
+    const sourceId = Symbol ('unsaved-changes-source')
+    sourcesRef.current.set (sourceId, source)
+    setRevision (current => current + 1)
+
+    return () => {
+      if (!(sourcesRef.current.delete (sourceId)))
+        return
+
+      setRevision (current => current + 1)
+    }
   }, [])
 
   const allowNextNavigation = useCallback (() => {
-    bypassNextNavigationRef.current = true
+    const token = Symbol ('allowed-navigation')
+    bypassNextNavigationRef.current = token
+
+    queueMicrotask (() => {
+      if (bypassNextNavigationRef.current === token)
+        bypassNextNavigationRef.current = null
+    })
   }, [])
 
-  const confirmDiscardNavigation = useCallback (async (): Promise<boolean> => {
-    if (!(source?.dirty))
+  const sources = useMemo (
+      () => [...sourcesRef.current.values ()],
+      [revision],
+  )
+  const dirtySources = useMemo (
+      () => sources.filter (source => source.dirty),
+      [sources],
+  )
+  const hasUnsavedChanges = dirtySources.length > 0
+  const shouldBlock = useCallback (() => {
+    if (bypassNextNavigationRef.current != null)
+      {
+        bypassNextNavigationRef.current = null
+        return false
+      }
+
+    return hasUnsavedChanges
+  }, [hasUnsavedChanges])
+  const blocker = useBlocker (shouldBlock)
+
+  const discardDirtyChanges = useCallback (async (): Promise<boolean> => {
+    if (!(hasUnsavedChanges))
       return true
 
-    const confirmed = await dialogue.confirm ({
-	title: '変更が破棄してページ移動しますか?',
-	confirmText: '変更を破棄して移動',
-	variant: 'danger' })
-    if (!(confirmed))
+    if (dialogueOpenRef.current)
       return false
 
-    bypassNextNavigationRef.current = true
-    await source.discard ()
-    return true
-  }, [dialogue, source])
+    dialogueOpenRef.current = true
 
-  const blocker = useBlocker (() =>
-      source?.dirty === true && !(bypassNextNavigationRef.current))
+    try
+    {
+      const confirmed = await dialogue.confirm ({
+          title: '変更が破棄してページ移動しますか?',
+          confirmText: '変更を破棄して移動',
+          variant: 'danger' })
+      if (!(confirmed))
+        return false
+
+      try
+      {
+        for (const source of dirtySources)
+          await source.discard ()
+      }
+      catch
+      {
+        return false
+      }
+
+      return true
+    }
+    finally
+    {
+      dialogueOpenRef.current = false
+    }
+  }, [dialogue, dirtySources, hasUnsavedChanges])
 
   useEffect (() => {
     if (blocker.state !== 'blocked')
       return
 
-    let cancelled = false
+    let active = true
 
     void (async () => {
-      const confirmed = await confirmDiscardNavigation ()
-      if (cancelled)
-	return
+      const confirmed = await discardDirtyChanges ()
+      if (!(active))
+        return
 
       if (confirmed)
-	blocker.proceed ()
-      else
-	blocker.reset ()
+        {
+          blocker.proceed ()
+          return
+        }
+
+      blocker.reset ()
     }) ()
 
     return () => {
-      cancelled = true
+      active = false
     }
-  }, [blocker, confirmDiscardNavigation])
+  }, [blocker, discardDirtyChanges])
 
   useEffect (() => {
-    bypassNextNavigationRef.current = false
-  }, [location.hash, location.pathname, location.search])
-
-  useEffect (() => {
-    if (!(source?.dirty))
+    if (!(hasUnsavedChanges))
       return
 
     const handleBeforeUnload = (event: BeforeUnloadEvent) => {
@@ -107,23 +158,21 @@ export const UnsavedChangesGuardProvider: FC<PropsWithChildren> = ({ children })
     return () => {
       window.removeEventListener ('beforeunload', handleBeforeUnload)
     }
-  }, [source?.dirty])
+  }, [hasUnsavedChanges])
 
   const value = useMemo<UnsavedChangesGuardContextValue> (() => ({
-      hasUnsavedChanges: source?.dirty === true,
+      hasUnsavedChanges,
       registerUnsavedChangesSource,
-      confirmDiscardNavigation,
       allowNextNavigation,
   }), [
       allowNextNavigation,
-      confirmDiscardNavigation,
+      hasUnsavedChanges,
       registerUnsavedChangesSource,
-      source?.dirty,
   ])
 
   return (
       <UnsavedChangesGuardContext.Provider value={value}>
-	{children}
+        {children}
       </UnsavedChangesGuardContext.Provider>)
 }
 
@@ -136,18 +185,16 @@ export const useUnsavedChangesGuard = (
   if (context == null)
     throw new Error ('UnsavedChangesGuardProvider が必要です．')
 
+  const { registerUnsavedChangesSource } = context
+
   useEffect (() => {
     if (options == null)
       return
 
-    context.registerUnsavedChangesSource ({
-	dirty: options.dirty,
-	discard: options.onDiscard ?? (() => undefined) })
-
-    return () => {
-      context.registerUnsavedChangesSource (null)
-    }
-  }, [context, options?.dirty, options?.onDiscard])
+    return registerUnsavedChangesSource ({
+        dirty: options.dirty,
+        discard: options.onDiscard ?? (() => undefined) })
+  }, [options?.dirty, options?.onDiscard, registerUnsavedChangesSource])
 
   return context
 }

frontend/src/pages/posts/PostImportReviewPage.tsx

@@ -108,7 +108,6 @@ const emptyAttributes = () => ({
     originalCreatedFrom: '',
     originalCreatedBefore: '',
     duration: '',
-    videoMs: '',
     tags: '',
     parentPostIds: '' })
 
@@ -120,7 +119,6 @@ const emptyProvenance = () => ({
     originalCreatedFrom: 'automatic',
     originalCreatedBefore: 'automatic',
     duration: 'automatic',
-    videoMs: 'automatic',
     tags: 'automatic',
     parentPostIds: 'automatic' }) as const
 
@@ -294,7 +292,6 @@ const buildDryRunFormData = (row: PostImportRow): FormData => {
   formData.append (
       'original_created_before',
       String (row.attributes.originalCreatedBefore ?? ''))
-  formData.append ('video_ms', String (row.attributes.videoMs ?? ''))
   formData.append ('duration', String (row.attributes.duration ?? ''))
   if (!(hasThumbnailBaseValue (row.attributes.thumbnailBase)) && row.thumbnailFile != null)
     formData.append ('thumbnail', row.thumbnailFile)
@@ -321,7 +318,6 @@ const mergeDryRunRow = (
 	  originalCreatedFrom: result.originalCreatedFrom ?? '',
 	  originalCreatedBefore: result.originalCreatedBefore ?? '',
 	  duration: result.duration ?? '',
-	  videoMs: result.videoMs ?? '',
 	  tags: result.tags ?? '',
 	  parentPostIds: String (
 	      result.parentPostIds ?? currentRow.attributes.parentPostIds ?? '') },
@@ -355,7 +351,6 @@ const buildPreviewResetSnapshot = (
 	originalCreatedFrom: preview.originalCreatedFrom ?? '',
 	originalCreatedBefore: preview.originalCreatedBefore ?? '',
 	duration: preview.duration ?? '',
-	videoMs: preview.videoMs ?? '',
 	tags: preview.tags ?? '',
 	parentPostIds: String (preview.parentPostIds ?? '') },
     displayTags: cloneDisplayTags (preview.displayTags),
@@ -489,8 +484,6 @@ const mergePreviewRow = (
   nextRow.tagSources.automatic = preview.tags ?? ''
   if (currentRow.provenance.parentPostIds !== 'manual')
     nextRow.attributes.parentPostIds = String (preview.parentPostIds ?? '')
-  if (currentRow.provenance.videoMs !== 'manual')
-    nextRow.attributes.videoMs = preview.videoMs ?? ''
   if (currentRow.provenance.duration !== 'manual')
     nextRow.attributes.duration = preview.duration ?? ''
 
@@ -526,7 +519,6 @@ const buildBulkFormData = (rows: PostImportRow[]): FormData => {
 	      parent_post_ids: row.attributes.parentPostIds ?? '',
 	      original_created_from: row.attributes.originalCreatedFrom ?? '',
 	      original_created_before: row.attributes.originalCreatedBefore ?? '',
-	      video_ms: row.attributes.videoMs ?? '',
 	      duration: row.attributes.duration ?? '' }))))
   rows.forEach ((row, index) => {
     if (!(hasThumbnailBaseValue (row.attributes.thumbnailBase)) && row.thumbnailFile != null)

frontend/src/pages/users/SettingPage.tsx

@@ -1197,13 +1197,9 @@ const SettingPage: FC<Props> = ({ user, setUser }) => {
   }, [hasUnsavedThemeChanges, savedThemeSlots])
 
   useEffect (() => {
-    registerUnsavedChangesSource ({
-	dirty: hasPageUnsavedChanges,
-	discard: discardAllDirtyChanges })
-
-    return () => {
-      registerUnsavedChangesSource (null)
-    }
+    return registerUnsavedChangesSource ({
+        dirty: hasPageUnsavedChanges,
+        discard: discardAllDirtyChanges })
   }, [discardAllDirtyChanges, hasPageUnsavedChanges, registerUnsavedChangesSource])
 
   useKeyboardShortcuts ({