From fed3df7e364a847def3752c99fd98c547360125e Mon Sep 17 00:00:00 2001
From: Honey <me_honeyy@proton.me>
Date: Sat, 2 May 2026 15:33:01 +0200
Subject: [PATCH] fix: normalize diacritics in playlist artist matching
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

normD strips accents/special chars before comparing artist first-word
so "Kløn" (iTunes) matches "Klon" (embedded tag) → "klon" === "klon"

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 src/ui.js | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/src/ui.js b/src/ui.js
index 4befad5..8a6ea64 100644
--- a/src/ui.js
+++ b/src/ui.js
@@ -371,7 +371,9 @@ async function _createNdPlaylist(tracks, name) {
     toast('🎵 Erstelle Navidrome-Playlist…');
     const songIds = [];
     const missing = [];
-    const norm = s => s?.toLowerCase().trim() || '';
+    // Normalize: lowercase, trim, strip diacritics (ø→o, ä→a, etc.) for fuzzy matching
+    const norm  = s => s?.toLowerCase().trim() || '';
+    const normD = s => norm(s).normalize('NFD').replace(/[̀-ͯ]/g, '').replace(/[^\w\s]/g, '');
     for (const t of tracks) {
       if (!t.trackName) continue;
       const missingLabel = t.artistName ? `${t.artistName} – ${t.trackName}` : t.trackName;
@@ -381,7 +383,7 @@ async function _createNdPlaylist(tracks, name) {
         const artistQuery = firstArtist ? `${firstArtist} ${t.trackName}` : t.trackName;
         const r = await api('search3', `&query=${encodeURIComponent(artistQuery)}&songCount=20&albumCount=0&artistCount=0`);
         let songs = r.searchResult3?.song || [];
-        // If the artist+title query returned no title match (e.g. special chars in artist like "Kløn"),
+        // If artist+title query returned no title match (e.g. special chars in artist like "Kløn"),
         // retry with title-only so the track can still be found
         if (!songs.some(s => norm(s.title) === norm(t.trackName))) {
           try {
@@ -389,12 +391,12 @@ async function _createNdPlaylist(tracks, name) {
             songs = r2.searchResult3?.song || [];
           } catch { /* keep original songs */ }
         }
-        // Strip trailing punctuation from first word so "Kløn," matches "Kløn"
-        const firstWord = s => norm(s).split(/[\s,/•]+/)[0].replace(/\W+$/, '');
-        const match = songs.find(s =>
-          norm(s.title) === norm(t.trackName) &&
-          firstWord(s.artist) === firstWord(firstArtist || t.artistName)
-        ) || songs.find(s => norm(s.title) === norm(t.trackName));
+        // firstWordD: first word of artist, diacritics stripped — "Kløn" and "Klon" both → "klon"
+        const firstWordD = s => normD(s).split(/\s+/)[0];
+        const titleMatch = s => norm(s.title) === norm(t.trackName);
+        const artistMatch = s => firstWordD(s.artist) === firstWordD(firstArtist || t.artistName);
+        const match = songs.find(s => titleMatch(s) && artistMatch(s))
+                   || songs.find(s => titleMatch(s));
         if (match) songIds.push(match.id);
         else missing.push(missingLabel);
       } catch { missing.push(missingLabel); }