backend/app/services/post_import_previewer.rb

@@ -1,3 +1,4 @@
+require 'time'
 require 'timeout'
 
 class PostImportPreviewer
@@ -86,7 +87,8 @@ class PostImportPreviewer
 
     if row[:metadata_url].present? && row[:metadata_url] != url_for_metadata
       clear_automatic_values!(attributes, provenance, tag_sources)
-      clear_fetch_warnings!(field_warnings)
+      field_warnings = { }
+      base_warnings = [ ]
     end
 
     if validation_errors.blank? && normal_url.present? && existing_post
@@ -248,7 +250,8 @@ class PostImportPreviewer
   def sanitise_metadata_time value
     return nil unless value.is_a?(String)
 
-    Time.zone.parse(value)&.iso8601
+    time = Time.iso8601(value)
+    time.nsec.zero? ? time.iso8601 : time.iso8601(9)
   rescue ArgumentError, TypeError
     nil
   end

backend/app/services/post_import_row_normaliser.rb

@@ -78,8 +78,12 @@ class PostImportRowNormaliser
   private_class_method :normalise_source_row!
 
   def self.normalise_url! value
-    raise ArgumentError, 'URL の形式が不正です．' unless value.is_a?(String)
-    raise ArgumentError, 'URL が長すぎます．' if value.bytesize > PostImportUrlListParser::MAX_URL_BYTES
+    unless value.is_a?(String)
+      raise ArgumentError, 'URL の形式が不正です．'
+    end
+    if value.bytesize > PostImportUrlListParser::MAX_URL_BYTES
+      raise ArgumentError, 'URL が長すぎます．'
+    end
   end
   private_class_method :normalise_url!
 
@@ -112,20 +116,32 @@ class PostImportRowNormaliser
   private_class_method :normalise_attributes!
 
   def self.normalise_provenance! provenance
-    raise ArgumentError, 'provenance の形式が不正です．' unless provenance.is_a?(Hash)
+    unless provenance.is_a?(Hash)
+      raise ArgumentError, 'provenance の形式が不正です．'
+    end
 
     allowed = ATTRIBUTE_FIELDS + ['url']
-    raise ArgumentError, '値の由来が不正です．' unless (provenance.keys - allowed).empty?
-    raise ArgumentError, '値の由来が不正です．' unless provenance.values.all? { ORIGINS.include?(_1) }
+    unless (provenance.keys - allowed).empty?
+      raise ArgumentError, '値の由来が不正です．'
+    end
+    unless provenance.values.all? { ORIGINS.include?(_1) }
+      raise ArgumentError, '値の由来が不正です．'
+    end
   end
   private_class_method :normalise_provenance!
 
   def self.normalise_tag_sources! tag_sources
     return if tag_sources.nil?
 
-    raise ArgumentError, 'タグ由来の形式が不正です．' unless tag_sources.is_a?(Hash)
-    raise ArgumentError, 'タグ由来の形式が不正です．' unless (tag_sources.keys - ORIGINS).empty?
-    raise ArgumentError, 'タグ由来の形式が不正です．' unless tag_sources.values.all? { _1.is_a?(String) }
+    unless tag_sources.is_a?(Hash)
+      raise ArgumentError, 'タグ由来の形式が不正です．'
+    end
+    unless (tag_sources.keys - ORIGINS).empty?
+      raise ArgumentError, 'タグ由来の形式が不正です．'
+    end
+    unless tag_sources.values.all? { _1.is_a?(String) }
+      raise ArgumentError, 'タグ由来の形式が不正です．'
+    end
     if tag_sources.values.any? { _1.bytesize > PostImportUrlListParser::MAX_URL_BYTES }
       raise ArgumentError, 'タグ由来が大きすぎます．'
     end
@@ -143,7 +159,9 @@ class PostImportRowNormaliser
       raise ArgumentError, '警告の形式が不正です．'
     end
     field_warnings&.each do |key, values|
-      raise ArgumentError, '警告の形式が不正です．' unless ATTRIBUTE_FIELDS.include?(key) || key == 'url'
+      unless ATTRIBUTE_FIELDS.include?(key) || key == 'url'
+        raise ArgumentError, '警告の形式が不正です．'
+      end
       unless values.is_a?(Array) && values.all? { _1.is_a?(String) }
         raise ArgumentError, '警告の形式が不正です．'
       end

backend/app/services/post_import_runner.rb

@@ -26,7 +26,8 @@ class PostImportRunner
     attributes = row.fetch('attributes', { }).transform_keys { _1.to_s.underscore }
     return { source_row: row['source_row'],
              status: 'failed',
-             errors: preview[:validation_errors] } if preview[:validation_errors].present?
+             errors: preview[:validation_errors],
+             recoverable: true } if preview[:validation_errors].present?
     if preview[:skip_reason] == 'existing'
       return { source_row: row['source_row'],
                status: 'skipped',
@@ -45,8 +46,13 @@ class PostImportRunner
                existing_post_id: existing_post.id }
     end
 
-    { source_row: row['source_row'], status: 'failed', errors: e.record.errors.to_hash }
-  rescue ActiveRecord::RecordNotUnique
+    { source_row: row['source_row'],
+      status: 'failed',
+      errors: e.record.errors.to_hash,
+      recoverable: true }
+  rescue ActiveRecord::RecordNotUnique => e
+    raise unless url_record_not_unique?(e)
+
     existing_post = existing_post_for_race(row)
     raise unless existing_post
 
@@ -56,15 +62,23 @@ class PostImportRunner
   rescue Tag::NicoTagNormalisationError
     { source_row: row['source_row'],
       status: 'failed',
-      errors: { tags: ['ニコニコ・タグは直接指定できません．'] } }
+      errors: { tags: ['ニコニコ・タグは直接指定できません．'] },
+      recoverable: true }
   rescue Tag::DeprecatedTagNormalisationError
     { source_row: row['source_row'],
       status: 'failed',
-      errors: { tags: ['廃止済みタグは付与できません．'] } }
+      errors: { tags: ['廃止済みタグは付与できません．'] },
+      recoverable: true }
+  rescue PostCreator::VideoMsParseError
+    { source_row: row['source_row'],
+      status: 'failed',
+      errors: { duration: ['動画時間の記法が不正です．'] },
+      recoverable: true }
   rescue ArgumentError
     { source_row: row['source_row'],
       status: 'failed',
-      errors: { base: ['入力値が不正です．'] } }
+      errors: { base: ['入力値が不正です．'] },
+      recoverable: true }
   rescue StandardError => e
     Rails.logger.error("post_import_runner_failure #{ { error: e.class.name,
                                                         message: e.message }.to_json }")
@@ -83,4 +97,8 @@ class PostImportRunner
 
     Post.find_by(url: normal_url)
   end
+
+  def url_record_not_unique? error
+    error.message.include?('index_posts_on_url')
+  end
 end

backend/app/services/post_metadata_fetcher.rb

@@ -1,3 +1,5 @@
+require 'time'
+
 class PostMetadataFetcher
   TIMESTAMP_PATTERN =
       Regexp.new(
@@ -26,8 +28,8 @@ class PostMetadataFetcher
     { title: metadata[:title],
       thumbnail_base:
           Preview::KnownSiteExtractor.thumbnail_url(uri) || metadata[:image_url],
-      original_created_from: created_range&.first&.iso8601,
-      original_created_before: created_range&.last&.iso8601,
+      original_created_from: serialise_time(created_range&.first),
+      original_created_before: serialise_time(created_range&.last),
       duration: duration&.to_f&.then { _1.positive? ? (_1 * 1_000).round : nil },
       tags: platform_tags.join(' ') }
   end
@@ -114,9 +116,16 @@ class PostMetadataFetcher
     Rational(value.to_i, 10**value.length)
   end
 
+  def self.serialise_time value
+    return nil if value.nil?
+
+    value.nsec.zero? ? value.iso8601 : value.iso8601(9)
+  end
+
   private_class_method :platform_tags,
                        :original_created_range,
                        :parse_timestamp_range,
                        :parse_offset,
-                       :fractional_seconds
+                       :fractional_seconds,
+                       :serialise_time
 end

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

@@ -73,7 +73,7 @@ const PostImportRowDialog: FC<Props> = (
     const [resetRequested, setResetRequested] = useState (false)
 
     useEffect (() => {
-	if (open && row)
+	if (open && row != null)
 	  {
 	    setDraft (buildDraft (row))
 	    setResetRequested (false)
@@ -90,7 +90,7 @@ const PostImportRowDialog: FC<Props> = (
 	value: Draft[Key],
     ) => {
 	setDraft (current =>
-	    current ? { ...current, [key]: value } : current)
+	    current != null ? { ...current, [key]: value } : current)
     }
 
     const save = async () => {

frontend/src/lib/postImportRows.ts

@@ -14,6 +14,9 @@ const buildResetSnapshot = (row: PostImportRow) => ({
     tagSources: {
 	automatic: row.tagSources?.automatic ?? '',
 	manual: row.tagSources?.manual ?? '' },
+    fieldWarnings: Object.fromEntries (
+	Object.entries (row.fieldWarnings).map (([key, values]) => [key, [...values]])),
+    baseWarnings: [...row.baseWarnings],
     metadataUrl: row.metadataUrl })
 
 
@@ -73,8 +76,7 @@ export const mergeValidatedImportRows = (
 	if (
 	    previous.importStatus === 'created'
 	    || previous.importStatus === 'skipped'
-	    || previous.importStatus === 'failed'
-	)
+	    || previous.importStatus === 'failed')
 	  return previous
 
 	const row = validatedMap.get (previous.sourceRow)

frontend/src/lib/postImportStorage.ts

@@ -21,6 +21,7 @@ const ATTRIBUTE_KEYS = [
     'parentPostIds'] as const
 const PROVENANCE_KEYS = [...ATTRIBUTE_KEYS, 'url'] as const
 const TAG_SOURCE_KEYS = ['automatic', 'manual'] as const
+const WARNING_KEYS = [...ATTRIBUTE_KEYS, 'url'] as const
 
 
 const isPlainObject = (value: unknown): value is Record<string, unknown> =>
@@ -162,6 +163,14 @@ const sanitiseResetSnapshot = (value: unknown): PostImportResetSnapshot | null =
       return null
     if (!(Object.values (value.tagSources).every (_1 => typeof _1 === 'string')))
       return null
+    const fieldWarnings = ensureStringListRecord (value.fieldWarnings)
+    if (fieldWarnings == null)
+      return null
+    if (!(hasOnlyKeys (fieldWarnings, WARNING_KEYS)))
+      return null
+    if (!(Array.isArray (value.baseWarnings))
+	|| !(value.baseWarnings.every (_1 => typeof _1 === 'string')))
+      return null
     if (value.metadataUrl != null && typeof value.metadataUrl !== 'string')
       return null
 
@@ -170,6 +179,8 @@ const sanitiseResetSnapshot = (value: unknown): PostImportResetSnapshot | null =
 	attributes: value.attributes as Record<string, string | number>,
 	provenance: value.provenance as Record<string, PostImportOrigin>,
 	tagSources: value.tagSources as Record<PostImportOrigin, string>,
+	fieldWarnings,
+	baseWarnings: value.baseWarnings,
 	metadataUrl: value.metadataUrl as string | undefined }
 }
 

frontend/src/lib/postImportTypes.ts

@@ -14,6 +14,8 @@ export type PostImportResetSnapshot = {
     attributes:  Record<string, PostImportAttributeValue>
     provenance:  Record<string, PostImportOrigin>
     tagSources:  Record<PostImportOrigin, string>
+    fieldWarnings: Record<string, string[]>
+    baseWarnings: string[]
     metadataUrl?: string }
 
 export type PostImportRow = {
@@ -48,7 +50,8 @@ export type PostImportResultRow =
     | {
 	sourceRow: number
 	status:    'failed'
-	errors?:   Record<string, string[]> }
+	errors?:   Record<string, string[]>
+	recoverable?: boolean }
 
 export type PostImportSession = {
     version:    number

frontend/src/pages/posts/PostImportResultPage.tsx

@@ -120,10 +120,36 @@ const PostImportResultPage: FC<Props> = ({ user }) => {
 			provenance: target.provenance,
 			tagSources: target.tagSources,
 			metadataUrl: target.metadataUrl }] })
-	    setSession (current =>
-		current
-		? { ...current, rows: mergeImportResults (current.rows, result.rows) }
-		: current)
+	    const mergedRows = mergeImportResults (nextSession.rows, result.rows)
+	    const recoverableRows = result.rows.filter (row =>
+		row.status === 'failed'
+		&& row.recoverable
+		&& Object.keys (row.errors ?? { }).length > 0)
+	    const nextRows = mergedRows.map (row => {
+		const recoverable = recoverableRows.find (_1 => _1.sourceRow === row.sourceRow)
+		if (recoverable == null)
+		  return row
+		return {
+		    ...row,
+		    importStatus: 'pending',
+		    validationErrors: recoverable.errors ?? { },
+		    importErrors: undefined }
+	    })
+	    const recoverableTarget = nextRows.find (_1 => _1.sourceRow === sourceRow)
+	    const resultSession = {
+		...nextSession,
+		rows: nextRows,
+		repairMode: recoverableTarget == null ? 'all' as const : 'failed' as const }
+	    setSession (resultSession)
+	    if (recoverableTarget != null
+		&& Object.keys (recoverableTarget.validationErrors).length > 0)
+	      {
+		const saved = savePostImportSession (sessionId, resultSession, message =>
+		    toast ({ title: '取込状態を保存できませんでした', description: message }))
+		if (saved)
+		  navigate (`/posts/import/${ sessionId }/review?edit=${ sourceRow }`)
+		return
+	      }
 	}
 	catch
 	{

frontend/src/pages/posts/PostImportReviewPage.tsx

@@ -115,7 +115,7 @@ const PostImportReviewPage: FC<Props> = ({ user }) => {
 
     const updateSessionRows = (nextRows: PostImportRow[]) =>
 	setSession (current =>
-	    current ? { ...current, rows: nextRows } : current)
+	    current != null ? { ...current, rows: nextRows } : current)
 
     const saveDraft = async (
 	{ draft, resetRequested, resetSnapshot }: {
@@ -136,6 +136,10 @@ const PostImportReviewPage: FC<Props> = ({ user }) => {
 		attributes: { ...resetSnapshot.attributes },
 		provenance: { ...resetSnapshot.provenance },
 		tagSources: { ...resetSnapshot.tagSources },
+		fieldWarnings: Object.fromEntries (
+		    Object.entries (resetSnapshot.fieldWarnings)
+			.map (([key, values]) => [key, [...values]])),
+		baseWarnings: [...resetSnapshot.baseWarnings],
 		metadataUrl: resetSnapshot.metadataUrl }
 	    : editingRow
 	const urlChanged = draft.url !== baseRow.url
@@ -223,7 +227,37 @@ const PostImportReviewPage: FC<Props> = ({ user }) => {
 			provenance: row.provenance,
 			tagSources: row.tagSources,
 			metadataUrl: row.metadataUrl })) })
-	    const nextRows = mergeImportResults (mergedRows, result.rows)
+	    const mergedResults = mergeImportResults (mergedRows, result.rows)
+	    const recoverableRows = result.rows.filter (row =>
+		row.status === 'failed'
+		&& row.recoverable
+		&& Object.keys (row.errors ?? { }).length > 0)
+	    const nextRows = mergedResults.map (row => {
+		const recoverable = recoverableRows.find (_1 => _1.sourceRow === row.sourceRow)
+		if (recoverable == null)
+		  return row
+		return {
+		    ...row,
+		    importStatus: 'pending',
+		    validationErrors: recoverable.errors ?? { },
+		    importErrors: undefined }
+	    })
+	    const firstRecoverable = nextRows.find (row =>
+		Object.keys (row.validationErrors).length > 0
+		&& row.importStatus !== 'created')
+	    if (firstRecoverable != null)
+	      {
+		const repairSession = { ...session,
+					rows: nextRows,
+					repairMode: 'failed' as const }
+		setSession (repairSession)
+		setDialogMessageRow (firstRecoverable)
+		const saved = savePostImportSession (sessionId, repairSession, message =>
+		    toast ({ title: '取込状態を保存できませんでした', description: message }))
+		if (saved)
+		  setSearchParams ({ edit: String (firstRecoverable.sourceRow) })
+		return
+	      }
 	    const nextSession = { ...session, rows: nextRows, repairMode: 'all' as const }
 	    setSession (nextSession)
 	    const saved = savePostImportSession (sessionId, nextSession, message =>

frontend/src/pages/posts/PostImportSourcePage.tsx

@@ -56,9 +56,9 @@ const PostImportSourcePage: FC<Props> = ({ user }) => {
     const editedRef = useRef (false)
 
     const lineCount = countImportSourceLines (source)
-    const messages = sourceError ? [sourceError] : []
+    const messages = sourceError != null ? [sourceError] : []
     const sourceDescribedBy = [
-	sourceError ? SOURCE_ERROR_ID : null,
+	sourceError != null ? SOURCE_ERROR_ID : null,
 	sourceIssues.length > 0 ? SOURCE_ISSUES_ID : null]
 	.filter (_1 => _1 != null)
 	.join (' ')