From a816dcb27adc19a2b2912fc7a0f63e82947e473d Mon Sep 17 00:00:00 2001
From: Steppenstreuner <jazz.h@gmx.net>
Date: Fri, 28 Aug 2026 20:49:32 +0200
Subject: [PATCH] fix(import): name merged parts after their folder and clean
 up empty ones

---
 static/app.js             |  6 +++++-
 tests/test_import_flow.py | 34 ++++++++++++++++++++++++++++++++++
 wordarr/importer/mover.py | 13 ++++++++++---
 3 files changed, 49 insertions(+), 4 deletions(-)

diff --git a/static/app.js b/static/app.js
index de3d2d3..da169ba 100644
--- a/static/app.js
+++ b/static/app.js
@@ -816,7 +816,11 @@ $("#import-merge").addEventListener("click", () => {
     toast("Die Einträge liegen in verschiedenen Ordnern", true);
     return;
   }
-  const name = commonPrefix(chosen.map((it) => it.name)) || chosen[0].name;
+  // parts may share no prefix at all ("A - Sphinx", "B - Volk"): then the
+  // folder holding them carries the real title ("100 - Toteninsel")
+  const parentName = (chosen[0].rel_dir || "").split("/").filter(Boolean).pop();
+  const name =
+    commonPrefix(chosen.map((it) => it.name)) || parentName || chosen[0].name;
   const merged = {
     path: chosen[0].path.slice(0, chosen[0].path.length - chosen[0].name.length - 1) || chosen[0].path,
     name,
diff --git a/tests/test_import_flow.py b/tests/test_import_flow.py
index b8732d7..98fc5df 100644
--- a/tests/test_import_flow.py
+++ b/tests/test_import_flow.py
@@ -504,3 +504,37 @@ def test_merge_at_download_root_keeps_the_download_dir(client):
     assert res["ok"], res
     assert client.downloads.is_dir()
     assert not (client.downloads / "Teil 1").exists()
+
+
+def test_merged_parts_clean_up_nested_source_folders(client):
+    """"100 - Toteninsel/A - Sphinx/CD/*.mp3" - every emptied level below the
+    merged item goes away, the cover folder keeps its parent alive."""
+    lib_id = client.post("/api/libraries", json={
+        "name": "L", "media_type": "audiobook", "root_path": str(client.tmp_path / "l"),
+        "folder_template": "{Title}", "file_template": "{Title}",
+    }).json()["id"]
+    req_id = client.post("/api/requests",
+                         json={"library_id": lib_id, "title": "Toteninsel"}).json()["id"]
+
+    base = client.downloads / "100 - Toteninsel"
+    files = []
+    for part in ("A - Sphinx", "B - Volk", "C - Graeber"):
+        cd = base / part / "CD"
+        cd.mkdir(parents=True)
+        for i in (1, 2):
+            f = cd / f"{i:02d}.mp3"
+            f.write_bytes(b"")
+            files.append(str(f))
+    (base / "Cover").mkdir()
+    (base / "Cover" / "front.jpg").write_bytes(b"")
+
+    res = client.post("/api/import", json={"items": [{
+        "path": str(base), "is_dir": True, "files": files, "request_id": req_id,
+    }]}).json()["results"][0]
+    assert res["ok"], res
+    assert sorted(p.name for p in Path(res["dest"]).iterdir()) == [
+        f"Toteninsel - Part 0{i}.mp3" for i in range(1, 7)
+    ]
+    assert not (base / "A - Sphinx").exists()
+    assert not (base / "B - Volk").exists()
+    assert (base / "Cover" / "front.jpg").exists()
diff --git a/wordarr/importer/mover.py b/wordarr/importer/mover.py
index 1734c90..c553c59 100644
--- a/wordarr/importer/mover.py
+++ b/wordarr/importer/mover.py
@@ -27,10 +27,17 @@ def import_item(item_path: str, files: list[str], is_dir: bool, request, library
         # files (cover art, booklets) is left alone.
         src_dir = Path(item_path)
         download_root = Path(config.DOWNLOAD_DIR).resolve()
-        candidates = {src_dir} | {p.parent for p in paths}
+        # collect every folder the files came from, up to (and including) the
+        # item itself - "…/100 - Toteninsel/A - Sphinx/CD" contributes all three
+        candidates = {src_dir}
+        for p in paths:
+            d = p.parent
+            while d == src_dir or src_dir in d.parents:
+                candidates.add(d)
+                if d == src_dir:
+                    break
+                d = d.parent
         for d in sorted(candidates, key=lambda p: len(p.parts), reverse=True):
-            if d != src_dir and src_dir not in d.parents:
-                continue  # never touch anything outside the item
             if d.resolve() == download_root:
                 continue  # merged items can point at the download dir itself
             if d.is_dir() and not any(f.is_file() for f in d.rglob("*")):