#422

backend/app/services/wiki/commit.rb

@@ -57,9 +57,6 @@ module Wiki
       line_shas = lines.map { |line| Digest::SHA256.hexdigest(line) }
       tree_sha = Digest::SHA256.hexdigest(line_shas.join(','))
 
-      line_id_by_sha = upsert_lines!(lines, line_shas)
-      line_ids = line_shas.map { |sha| line_id_by_sha.fetch(sha) }
-
       ActiveRecord::Base.transaction do
         @page.lock!
 
@@ -72,6 +69,8 @@ module Wiki
           end
         end
 
+        line_id_by_sha = upsert_lines!(lines, line_shas)
+        line_ids = line_shas.map { |sha| line_id_by_sha.fetch(sha) }
         @page.update!(body: normalised)
 
         WikiVersionRecorder.record!(
@@ -94,6 +93,7 @@ module Wiki
           { wiki_revision_id: rev.id, wiki_line_id: line_id, position: pos }
         end
         WikiRevisionLine.insert_all!(rows) if rows.any?
+        record_description!(rev, normalised)
 
         rev
       end
@@ -110,6 +110,26 @@ module Wiki
 
     private
 
+    def record_description! revision, body
+      tag = @page.tag_name.tag
+      return unless tag && @page.tag_name.language_code == 'ja'
+
+      tag.lock!
+      description = TagDescription.lock.find_by(tag_id: tag.id, language_code: 'ja')
+      version_no = description ? description.version_no + 1 : 1
+      TagDescriptionVersion.create!(
+          id: revision.id, tag_id: tag.id, language_code: 'ja', version_no:,
+          event_type: description ? 'update' : 'create', body:,
+          created_by_user_id: @created_user.id, created_at: revision.created_at)
+      if description
+        description.update!(body:, version_no:, updated_by_user_id: @created_user.id)
+      else
+        TagDescription.create!(
+            id: @page.id, tag_id: tag.id, language_code: 'ja', version_no:, body:,
+            created_by_user_id: @created_user.id, updated_by_user_id: @created_user.id)
+      end
+    end
+
     def split_lines(body) = body.split("\n")
 
     def upsert_lines! lines, line_shas