fix: rebuilding posts and media fixed, also removed unnecessary thumbnail rebuild

Co-authored-by: Copilot <copilot@github.com>

lib/bds/frontmatter.ex

@@ -4,6 +4,7 @@ defmodule BDS.Frontmatter do
   alias BDS.Persistence
 
   @list_item_prefix "  - "
+  @block_scalar_indent "  "
 
   def serialize_document(fields, body) when is_list(fields) do
     frontmatter =
@@ -82,7 +83,14 @@ defmodule BDS.Frontmatter do
 
       String.contains?(line, ": ") ->
         [key, raw_value] = String.split(line, ": ", parts: 2)
-        parse_lines(rest, Map.put(acc, key, parse_scalar(key, raw_value)))
+
+        if block_scalar_indicator?(raw_value) do
+          {value_lines, remaining} = take_block_scalar_lines(rest, [])
+          value = parse_scalar(key, parse_block_scalar(raw_value, value_lines))
+          parse_lines(remaining, Map.put(acc, key, value))
+        else
+          parse_lines(rest, Map.put(acc, key, parse_scalar(key, raw_value)))
+        end
 
       true ->
         parse_lines(rest, acc)
@@ -100,6 +108,16 @@ defmodule BDS.Frontmatter do
 
   defp take_list_items([], items), do: {items, []}
 
+  defp take_block_scalar_lines([line | rest], lines) do
+    if String.starts_with?(line, @block_scalar_indent) do
+      take_block_scalar_lines(rest, [String.replace_prefix(line, @block_scalar_indent, "") | lines])
+    else
+      {Enum.reverse(lines), [line | rest]}
+    end
+  end
+
+  defp take_block_scalar_lines([], lines), do: {Enum.reverse(lines), []}
+
   defp parse_scalar(key, value) when is_binary(key) and is_binary(value) do
     trimmed = String.trim(value)
     parsed = parse_generic_scalar(trimmed)
@@ -153,6 +171,21 @@ defmodule BDS.Frontmatter do
 
   defp parse_string(value), do: value
 
+  defp block_scalar_indicator?(value) do
+    trimmed = String.trim(value)
+    String.starts_with?(trimmed, ">") or String.starts_with?(trimmed, "|")
+  end
+
+  defp parse_block_scalar(indicator, lines) do
+    trimmed = String.trim(indicator)
+
+    cond do
+      String.starts_with?(trimmed, ">") -> Enum.join(lines, " ")
+      String.starts_with?(trimmed, "|") -> Enum.join(lines, "\n")
+      true -> Enum.join(lines, "\n")
+    end
+  end
+
   defp serialize_scalar(_key, value) when is_boolean(value) do
     if(value, do: "true", else: "false")
   end

lib/bds/media.ex

@@ -393,7 +393,6 @@ defmodule BDS.Media do
     media
     |> Media.changeset(attrs)
     |> Repo.insert_or_update!()
-    |> tap(fn reloaded_media -> ensure_thumbnails(project, reloaded_media) end)
     |> tap(&Search.sync_media/1)
   end
 

test/bds/media_test.exs

@@ -196,7 +196,7 @@ defmodule BDS.MediaTest do
     thumbnail_paths = BDS.Media.thumbnail_paths(media)
 
     Enum.each(Map.values(thumbnail_paths), fn path ->
-      assert File.exists?(Path.join(temp_dir, path))
+      refute File.exists?(Path.join(temp_dir, path))
     end)
   end
 
@@ -240,6 +240,44 @@ defmodule BDS.MediaTest do
     assert media.updated_at == 1_773_847_870_146
   end
 
+  test "rebuild_media_from_files does not regenerate thumbnails", %{
+    project: project,
+    temp_dir: temp_dir
+  } do
+    media_dir = Path.join([temp_dir, "media", "2026", "04"])
+    File.mkdir_p!(media_dir)
+
+    binary_path = Path.join(media_dir, "asset.jpg")
+    sidecar_path = binary_path <> ".meta"
+
+    File.write!(binary_path, tiny_jpeg_binary())
+
+    File.write!(
+      sidecar_path,
+      [
+        "id: media-without-thumbnails",
+        "originalName: original.jpg",
+        "mimeType: image/jpeg",
+        "size: #{byte_size(tiny_jpeg_binary())}",
+        "width: 3",
+        "height: 2",
+        "title: Recovered",
+        "createdAt: 2024-03-30T21:20:00.000Z",
+        "updatedAt: 2024-03-31T21:20:00.000Z",
+        "tags:",
+        "  - alpha",
+        ""
+      ]
+      |> Enum.join("\n")
+    )
+
+    assert {:ok, [media]} = BDS.Media.rebuild_media_from_files(project.id)
+
+    Enum.each(Map.values(BDS.Media.thumbnail_paths(media)), fn path ->
+      refute File.exists?(Path.join(temp_dir, path))
+    end)
+  end
+
   test "import_media generates the four thumbnail files in bucketed thumbnail paths", %{
     project: project,
     temp_dir: temp_dir

test/bds/posts_test.exs

@@ -429,6 +429,85 @@ defmodule BDS.PostsTest do
     assert post.published_at == 1_036_497_600_000
   end
 
+  test "rebuild_posts_from_files parses folded multiline title and slug scalars alongside translations" do
+    temp_dir =
+      Path.join(System.tmp_dir!(), "bds-post-rebuild-folded-#{System.unique_integer([:positive])}")
+
+    File.mkdir_p!(temp_dir)
+    on_exit(fn -> File.rm_rf(temp_dir) end)
+
+    assert {:ok, project} =
+             BDS.Projects.create_project(%{name: "Folded Rebuild", data_path: temp_dir})
+
+    posts_dir = Path.join([BDS.Projects.project_data_dir(project), "posts", "2010", "11"])
+    File.mkdir_p!(posts_dir)
+
+    File.write!(
+      Path.join(
+        posts_dir,
+        "introducing-thirty-ten-my-guide-to-creating-a-twenty-ten-child-theme-aaron-jorb-inaaron-jorb-in.md"
+      ),
+      [
+        "---",
+        "id: 66865ffe-c6d9-4379-a031-0581f33b68b4",
+        "title: >-",
+        "  Introducing Thirty Ten, my guide to creating a Twenty Ten Child Theme |",
+        "  aaron.jorb.inaaron.jorb.in",
+        "slug: >-",
+        "  introducing-thirty-ten-my-guide-to-creating-a-twenty-ten-child-theme-aaron-jorb-inaaron-jorb-in",
+        "status: published",
+        "createdAt: '2010-11-13T12:37:55.000Z'",
+        "updatedAt: '2026-03-03T12:31:37.661Z'",
+        "tags:",
+        "  - wordpress",
+        "categories:",
+        "  - aside",
+        "author: hugo",
+        "language: de",
+        "publishedAt: '2010-11-13T11:37:55.000Z'",
+        "---",
+        "Quelle",
+        ""
+      ]
+      |> Enum.join("\n")
+    )
+
+    File.write!(
+      Path.join(
+        posts_dir,
+        "introducing-thirty-ten-my-guide-to-creating-a-twenty-ten-child-theme-aaron-jorb-inaaron-jorb-in.en.md"
+      ),
+      [
+        "---",
+        "translationFor: 66865ffe-c6d9-4379-a031-0581f33b68b4",
+        "language: en",
+        "title: >-",
+        "  Introducing Thirty Ten, my guide to creating a Twenty Ten Child Theme |",
+        "  aaron.jorb.inaaron.jorb.in",
+        "---",
+        "Translated body",
+        ""
+      ]
+      |> Enum.join("\n")
+    )
+
+    assert {:ok, [post]} = BDS.Posts.rebuild_posts_from_files(project.id)
+    assert post.id == "66865ffe-c6d9-4379-a031-0581f33b68b4"
+
+    assert post.slug ==
+             "introducing-thirty-ten-my-guide-to-creating-a-twenty-ten-child-theme-aaron-jorb-inaaron-jorb-in"
+
+    assert post.title ==
+             "Introducing Thirty Ten, my guide to creating a Twenty Ten Child Theme | aaron.jorb.inaaron.jorb.in"
+
+    assert {:ok, [translation]} = BDS.Posts.list_post_translations(post.id)
+
+    assert translation.translation_for == post.id
+
+    assert translation.title ==
+             "Introducing Thirty Ten, my guide to creating a Twenty Ten Child Theme | aaron.jorb.inaaron.jorb.in"
+  end
+
   defp errors_on(changeset) do
     Ecto.Changeset.traverse_errors(changeset, fn {message, opts} ->
       Regex.replace(~r"%{(\w+)}", message, fn _, key ->

test/bds/real_blog_rebuild_diagnostic_test.exs

@@ -0,0 +1,46 @@
+defmodule BDS.RealBlogRebuildDiagnosticTest do
+  use ExUnit.Case, async: false
+
+  @real_blog_path System.get_env("BDS_REAL_BLOG_PATH")
+  @moduletag timeout: :infinity
+
+  if is_binary(@real_blog_path) and @real_blog_path != "" do
+    setup do
+      :ok = Ecto.Adapters.SQL.Sandbox.checkout(BDS.Repo, ownership_timeout: 600_000)
+
+      now = BDS.Persistence.now_ms()
+      unique = Integer.to_string(System.unique_integer([:positive]))
+
+      project =
+        %BDS.Projects.Project{}
+        |> BDS.Projects.Project.changeset(%{
+          id: "real-blog-#{unique}",
+          name: "Real Blog Diagnostic",
+          slug: "real-blog-diagnostic-#{unique}",
+          data_path: Path.expand(@real_blog_path),
+          created_at: now,
+          updated_at: now,
+          is_active: false
+        })
+        |> BDS.Repo.insert!()
+
+      %{project: project}
+    end
+
+    test "rebuilds posts from the external real blog path", %{project: project} do
+      assert {:ok, _posts} = BDS.Maintenance.rebuild_from_filesystem(project.id, "post")
+    end
+
+    test "rebuilds media from the external real blog path", %{project: project} do
+      assert {:ok, _media} = BDS.Maintenance.rebuild_from_filesystem(project.id, "media")
+    end
+  else
+    @tag skip: "BDS_REAL_BLOG_PATH not set"
+    test "rebuilds posts from the external real blog path" do
+    end
+
+    @tag skip: "BDS_REAL_BLOG_PATH not set"
+    test "rebuilds media from the external real blog path" do
+    end
+  end
+end