AI: address review on PR #465

backend/app/services/post_tag_search.rb

@@ -3,8 +3,8 @@ class PostTagSearch
   def self.literals(locale, raw)
     tokens = raw.split.reject { _1.downcase == 'type:or' }
     names = tokens.map { _1.sub(/\Anot:/i, '') }
-    registered = matching_names(TagName.where(language_code: locale.language_code),
+    registered = TagName.where(language_code: locale.language_code, name: names)
-        names, 'tag_names.name', :tag_id).to_h
+        .pluck(:name, :tag_id).to_h
     primary = TagName.where(language_code: locale.language_code,
         tag_id: registered.values, primary_flg: true).pluck(:tag_id, :name).to_h
     tokens.zip(names).map do |token, name|
@@ -19,25 +19,12 @@ class PostTagSearch
 
   def self.references_for(locale, literals)
     names = literals.map { _1[:name] }.uniq
-    internal = matching_names(TagName.where(language_code: locale.language_code),
+    internal = TagName.where(language_code: locale.language_code, name: names)
-        names, 'tag_names.name', :tag_id).group_by(&:first)
+        .pluck(:name, :tag_id).group_by(&:first)
-    external = matching_names(ExternalTag.all, names,
+    external = names.empty? ? {} : ExternalTag.where(
-        "CONCAT(external_tags.platform, ':', external_tags.name)", :id).group_by(&:first)
+        "CONCAT(platform, ':', name) IN (?)", names)
+        .pluck(Arel.sql("CONCAT(platform, ':', name)"), :id).group_by(&:first)
     names.to_h { |name| [name, [internal.fetch(name, []).map(&:last).uniq,
                               external.fetch(name, []).map(&:last).uniq]] }
   end
-
-  def self.matching_names(scope, names, expression, identifier)
-    return [] if names.empty?
-
-    queries = names.uniq.map do |name|
-      scope.klass.sanitize_sql_array(['SELECT ? AS name', name])
-    end
-    # Return the input spelling so Ruby does not recheck database equivalence.
-    scope.joins(<<~SQL).pluck(Arel.sql('search_names.name'), identifier)
-      INNER JOIN (#{ queries.join(' UNION ALL ') }) AS search_names
-        ON #{ expression } = search_names.name COLLATE utf8mb4_0900_ai_ci
-    SQL
-  end
-  private_class_method :matching_names
 end

backend/spec/requests/posts_spec.rb

@@ -206,25 +206,6 @@ RSpec.describe 'Posts API', type: :request do
     end
 
     context 'when q is provided' do
-      ['SPEC_TAG', 'SpEc_TaG', 'spec_tág', 'MANKO', 'MaNkO', 'mánko'].each do |name|
-        it "matches #{ name } using database collation" do
-          get '/posts', params: { locale: 'ja', tags: name }
-
-          expect(response).to have_http_status(:ok)
-          expect(json.fetch('count')).to eq(2)
-          expect(json.fetch('posts').map { _1.fetch('id') })
-              .to contain_exactly(post_record.id, hit_post.id)
-        end
-
-        it "excludes #{ name } using database collation" do
-          get '/posts', params: { locale: 'ja', tags: "not:#{ name }" }
-
-          expect(response).to have_http_status(:ok)
-          expect(json.fetch('count')).to eq(1)
-          expect(json.fetch('posts').map { _1.fetch('id') }).to eq([miss_post.id])
-        end
-      end
-
       it 'filters posts by q (hit case)' do
         get '/posts', params: { tags: 'spec_tag' }
 
@@ -285,26 +266,6 @@ RSpec.describe 'Posts API', type: :request do
         PostExternalTag.create!(post: miss_post, external_tag:)
       end
 
-      ['NICO:SEARCH_EXTERNAL', 'NiCo:SeArCh_ExTeRnAl', 'nico:séarch_external'].each do |name|
-        it "matches #{ name } using database collation" do
-          get '/posts', params: { locale: 'ja', tags: name }
-
-          expect(response).to have_http_status(:ok)
-          expect(json.fetch('count')).to eq(2)
-          expect(json.fetch('posts').map { _1.fetch('id') })
-              .to contain_exactly(miss_post.id, both_post.id)
-        end
-
-        it "excludes #{ name } using database collation" do
-          get '/posts', params: { locale: 'ja', tags: "not:#{ name }" }
-
-          expect(response).to have_http_status(:ok)
-          expect(json.fetch('count')).to eq(2)
-          expect(json.fetch('posts').map { _1.fetch('id') })
-              .to contain_exactly(post_record.id, hit_post.id)
-        end
-      end
-
       it 'keeps internal name searches independent of colliding external ids' do
         get '/posts', params: { tags: primary_tag_name_for(tag, 'ja').name }
 

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')> (),
-  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 = {
+	  title, tags, parentPostIds,
 	  duration: videoFlg ? duration : null,
-		      originalCreatedFrom, originalCreatedBefore },
+	  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