AI: address review on PR #465

backend/app/controllers/tag_versions_controller.rb

@@ -69,11 +69,8 @@ class TagVersionsController < ApplicationController
 
       parent_tags =
           build_version_values(cur_parent_tag_ids, prev_parent_tag_ids, key: :tag_id)
-          .filter_map do |h|
+          .map do |h|
-            parent = parent_json[h[:tag_id]]
+            { tag: parent_json.fetch(h[:tag_id]),
-            next unless parent
-
-            { tag: parent,
               type: h[:type] }
           end
 

backend/spec/requests/tag_versions_spec.rb

@@ -215,36 +215,6 @@ RSpec.describe 'TagVersions API', type: :request do
       expect(first.fetch('created_at')).to eq(t_v1.iso8601)
     end
 
-    [:parent_shared, :parent_new, :parent_old].each do |parent_key|
-      it "omits deleted #{ parent_key } from parent diffs" do
-        deleted_parent = public_send(parent_key)
-        deleted_parent.tag_names.destroy_all
-        deleted_parent.destroy!
-
-        get '/tags/versions', params: { id: tag.id }
-
-        expect(response).to have_http_status(:ok)
-        expect(json.fetch('count')).to eq(2)
-
-        versions = json.fetch('versions')
-        expect(versions.map { _1.fetch('version_no') }).to eq([2, 1])
-
-        expected_parents = [
-            [parent_shared.id, 'context'],
-            [parent_new.id, 'added'],
-            [parent_old.id, 'removed']].reject { _1.first == deleted_parent.id }
-        expect(versions.first.fetch('parent_tags').map { |entry|
-          [entry.fetch('tag').fetch('id'), entry.fetch('type')]
-        }).to eq(expected_parents)
-
-        expected_first_parents = [parent_shared.id, parent_old.id]
-            .reject { _1 == deleted_parent.id }.map { [_1, 'added'] }
-        expect(versions.second.fetch('parent_tags').map { |entry|
-          [entry.fetch('tag').fetch('id'), entry.fetch('type')]
-        }).to eq(expected_first_parents)
-      end
-    end
-
     it 'returns empty when the specified tag has no versions' do
       fresh_tag = create(:tag, primary_name: 'no_versions_tag', category: :general)
 

frontend/src/components/PostEditForm.test.tsx

@@ -1,11 +1,13 @@
-import { fireEvent, screen, waitFor } from '@testing-library/react'
+import { act, fireEvent, screen, waitFor } from '@testing-library/react'
-import { describe, expect, it, vi } from 'vitest'
+import { beforeEach, describe, expect, it, vi } from 'vitest'
 
 import { textContentOf } from '@/test/text'
 import PostEditForm from '@/components/PostEditForm'
 import { buildPost, buildTag } from '@/test/factories'
 import { renderWithProviders as render } from '@/test/render'
 
+import type { DialogueAPI } from '@/lib/dialogues/useDialogue'
+
 const postsApi = vi.hoisted (() => ({
   updatePost: vi.fn (),
 }))
@@ -18,18 +20,27 @@ const toastApi = vi.hoisted (() => ({
   toast: vi.fn (),
 }))
 
+const dialogue = vi.hoisted (() => ({
+    confirm: vi.fn<DialogueAPI['confirm']> (),
+    choice: vi.fn () }))
+
 vi.mock ('@/lib/posts', () => postsApi)
 vi.mock ('@/lib/api', () => api)
 vi.mock ('@/components/ui/use-toast', () => toastApi)
 vi.mock ('@/lib/dialogues/useDialogue', async importOriginal => ({
-  ...await importOriginal<typeof import ('@/lib/dialogues/useDialogue')> (),
+    ...await importOriginal<typeof import ('@/lib/dialogues/useDialogue')> (),
-  default: () => ({
+    default: () => dialogue }))
-    choice: vi.fn (),
-  }),
-}))
 
 describe ('PostEditForm', () => {
+  beforeEach (() => {
+    vi.resetAllMocks ()
+  })
+
   it ('submits edited post fields with the current base version', async () => {
+    const confirm = vi.fn<(value: boolean) => void> ()
+    dialogue.confirm.mockReturnValueOnce (new Promise<boolean> (resolve => {
+      confirm.mockImplementation (resolve)
+    }))
     const onSave = vi.fn ()
     const post = buildPost ({
       id:        8,
@@ -55,6 +66,16 @@ describe ('PostEditForm', () => {
     fireEvent.change (parentIds, { target: { value: '3 4' } })
     fireEvent.submit (screen.getByRole ('button', { name: '更新' }).closest ('form')!)
 
+    expect (postsApi.updatePost).not.toHaveBeenCalled ()
+    expect (dialogue.confirm).toHaveBeenCalledTimes (1)
+    const difference = textContentOf (
+	dialogue.confirm.mock.calls[0][0].description)
+    expect (difference).toContain ('oldnew')
+    expect (difference).toContain ('23 4')
+    expect (difference).not.toContain ('general-tag')
+
+    await act (async () => { confirm (true) })
+
     await waitFor (() => {
       expect (postsApi.updatePost).toHaveBeenCalledWith (
           expect.objectContaining ({
@@ -71,6 +92,28 @@ describe ('PostEditForm', () => {
     expect (textContentOf (toastApi.toast.mock.calls[0][0].description)).toBe ('更新しました．')
   })
 
+  it ('keeps edited fields without submitting when confirmation is cancelled', async () => {
+    const onSave = vi.fn ()
+    dialogue.confirm.mockResolvedValueOnce (false)
+    render (<PostEditForm post={buildPost ()} onSave={onSave}/>)
+
+    const [title, parentIds] = screen.getAllByRole ('textbox')
+    fireEvent.change (title, { target: { value: 'new' } })
+    fireEvent.change (parentIds, { target: { value: '3 4' } })
+    const button = screen.getByRole ('button', { name: '更新' })
+    fireEvent.submit (button.closest ('form')!)
+
+    await waitFor (() => {
+      expect (button).toBeEnabled ()
+    })
+    expect (dialogue.confirm).toHaveBeenCalledTimes (1)
+    expect (postsApi.updatePost).not.toHaveBeenCalled ()
+    expect (onSave).not.toHaveBeenCalled ()
+    expect (toastApi.toast).not.toHaveBeenCalled ()
+    expect (title).toHaveValue ('new')
+    expect (parentIds).toHaveValue ('3 4')
+  })
+
   it ('preserves duration while the video tag is temporarily removed', () => {
     const post = buildPost ({
       videoMs: 180_500,
@@ -100,6 +143,7 @@ describe ('PostEditForm', () => {
       'shows deduplicated original-created endpoint errors on the shared datetime field',
       async () => {
     const post = buildPost ()
+    dialogue.confirm.mockResolvedValueOnce (true)
     api.isApiError.mockReturnValue (true)
     postsApi.updatePost.mockRejectedValueOnce ({
       response: {

frontend/src/components/PostEditForm.tsx

@@ -15,7 +15,7 @@ import { msToTime } from '@/lib/utils'
 import { useValidationErrors } from '@/lib/useValidationErrors'
 import { useUITranslation } from '@/lib/useUITranslation'
 
-import type { FC, FormEvent } from 'react'
+import type { FC, FormEvent, ReactNode } from 'react'
 
 import type { Post, TagWithSections } from '@/types'
 
@@ -23,6 +23,8 @@ type PostFormField =
     'parentPostIds' | 'tags' | 'videoMs'
     | 'originalCreatedAt' | 'originalCreatedFrom' | 'originalCreatedBefore'
 
+type PostEditData = Omit<Parameters<typeof updatePost>[0], 'id'>
+
 const groupedMessages = (...values: (string[] | undefined)[]): string[] =>
     [...new Set (values.flatMap (value => value ?? []))]
 
@@ -150,12 +152,63 @@ const PostEditForm: FC<Props> = ({ post, onSave }) => {
   const handleSubmit = async (e: FormEvent) => {
     e.preventDefault ()
 
+    if (disabled) return
+
     setDisabled (true)
     try
     {
-      await update ({ id: post.id, title, tags, parentPostIds,
+      const current: PostEditData = {
-		      duration: videoFlg ? duration : null,
+	  title, tags, parentPostIds,
-		      originalCreatedFrom, originalCreatedBefore },
+	  duration: videoFlg ? duration : null,
+	  originalCreatedFrom, originalCreatedBefore }
+      const fields: {
+	  [Key in keyof PostEditData]-?: {
+	      name: ReactNode
+	      prev: PostEditData[Key] } } = {
+	  title: { name: label ('shared:labels.title'), prev: post.title },
+	  parentPostIds: {
+	      name: label ('shared:labels.parentPosts'),
+	      prev: (post.parentPosts ?? []).map (parent => parent.id).join (' ') },
+	  tags: { name: label ('tags:title'), prev: tagsToStr (post.tags) },
+	  duration: {
+	      name: label ('shared:labels.duration'),
+	      prev: videoMsToDurationValue (post.videoMs) },
+	  originalCreatedFrom: {
+	      name: <>{label ('shared:labels.originalCreatedAt')}{' '}
+			{label ('shared:labels.since')}</>,
+	      prev: post.originalCreatedFrom },
+	  originalCreatedBefore: {
+	      name: <>{label ('shared:labels.originalCreatedAt')}{' '}
+			{label ('shared:labels.before')}</>,
+	      prev: post.originalCreatedBefore } }
+      const differences = (Object.keys (fields) as (keyof PostEditData)[])
+	  .map (key => ({ key, name: fields[key].name,
+	      prev: fields[key].prev ?? '', current: current[key] ?? '' }))
+	  .filter (row => row.prev !== row.current)
+
+      if (!(await dialogue.confirm ({
+	  title: label ('shared:actions.diff'),
+	  confirmText: label ('shared:actions.update'),
+	  description: (
+	      <dl className="max-h-[60dvh] overflow-y-auto space-y-3 text-left">
+		{differences.map (row => (
+		    <div key={row.key}>
+		      <dt className="font-semibold">{row.name}</dt>
+		      <dd className="whitespace-pre-wrap break-words">
+			{row.prev && (
+			    <del className="block text-red-600 dark:text-red-400">
+			      {row.prev}
+			    </del>)}
+			{row.current && (
+			    <ins className="block text-green-700 dark:text-green-400">
+			      {row.current}
+			    </ins>)}
+		      </dd>
+		    </div>))}
+	      </dl>) })))
+	return
+
+      await update ({ id: post.id, ...current },
 		    { baseVersionNo: post.versionNo })
     }
     finally