feat(songs): auto-select default arrangement on song match

app/Services/SongMatchingService.php

@@ -31,8 +31,17 @@ public function autoMatch(ServiceSong $serviceSong): bool
             return false;
         }
 
+        // Find default arrangement: is_default → name='normal' → first
+        $defaultArrangement = $song->arrangements()
+            ->where('is_default', true)
+            ->first() ?? $song->arrangements()
+            ->where('name', 'normal')
+            ->first() ?? $song->arrangements()
+            ->first();
+
         $serviceSong->update([
             'song_id' => $song->id,
+            'song_arrangement_id' => $defaultArrangement?->id,
             'matched_at' => Carbon::now(),
             'use_translation' => $song->has_translation,
         ]);
@@ -43,14 +52,30 @@ public function autoMatch(ServiceSong $serviceSong): bool
     /**
      * Manually assign a song to a service song.
      * Overwrites any existing assignment.
+     * Only sets arrangement if currently null (preserves existing selection).
      */
     public function manualAssign(ServiceSong $serviceSong, Song $song): void
     {
-        $serviceSong->update([
+        $updateData = [
             'song_id' => $song->id,
             'matched_at' => Carbon::now(),
             'use_translation' => $song->has_translation,
-        ]);
+        ];
+
+        // Only set arrangement if currently null
+        if ($serviceSong->song_arrangement_id === null) {
+            // Find default arrangement: is_default → name='normal' → first
+            $defaultArrangement = $song->arrangements()
+                ->where('is_default', true)
+                ->first() ?? $song->arrangements()
+                ->where('name', 'normal')
+                ->first() ?? $song->arrangements()
+                ->first();
+
+            $updateData['song_arrangement_id'] = $defaultArrangement?->id;
+        }
+
+        $serviceSong->update($updateData);
     }
 
     /**

tests/Feature/SongMatchingTest.php

@@ -4,6 +4,7 @@
 use App\Models\Service;
 use App\Models\ServiceSong;
 use App\Models\Song;
+use App\Models\SongArrangement;
 use App\Models\User;
 use App\Services\SongMatchingService;
 use Illuminate\Support\Facades\Mail;
@@ -104,6 +105,80 @@
     expect($serviceSong->song_id)->toBe($existingSong->id);
 });
 
+test('autoMatch setzt song_arrangement_id auf Standard-Arrangement', function () {
+    $song = Song::factory()->create(['ccli_id' => '7115744']);
+    $defaultArrangement = SongArrangement::factory()->create([
+        'song_id' => $song->id,
+        'name' => 'normal',
+        'is_default' => false,
+    ]);
+
+    $serviceSong = ServiceSong::factory()->create([
+        'cts_ccli_id' => '7115744',
+        'song_id' => null,
+        'song_arrangement_id' => null,
+    ]);
+
+    $service = app(SongMatchingService::class);
+    $result = $service->autoMatch($serviceSong);
+
+    expect($result)->toBeTrue();
+    $serviceSong->refresh();
+    expect($serviceSong->song_arrangement_id)->toBe($defaultArrangement->id);
+});
+
+test('autoMatch bevorzugt is_default=true Arrangement', function () {
+    $song = Song::factory()->create(['ccli_id' => '7115744']);
+    $normalArrangement = SongArrangement::factory()->create([
+        'song_id' => $song->id,
+        'name' => 'normal',
+        'is_default' => false,
+    ]);
+    $defaultArrangement = SongArrangement::factory()->create([
+        'song_id' => $song->id,
+        'name' => 'Standard',
+        'is_default' => true,
+    ]);
+
+    $serviceSong = ServiceSong::factory()->create([
+        'cts_ccli_id' => '7115744',
+        'song_id' => null,
+        'song_arrangement_id' => null,
+    ]);
+
+    $service = app(SongMatchingService::class);
+    $service->autoMatch($serviceSong);
+
+    $serviceSong->refresh();
+    expect($serviceSong->song_arrangement_id)->toBe($defaultArrangement->id);
+});
+
+test('autoMatch nutzt erstes Arrangement wenn kein Standard vorhanden', function () {
+    $song = Song::factory()->create(['ccli_id' => '7115744']);
+    $firstArrangement = SongArrangement::factory()->create([
+        'song_id' => $song->id,
+        'name' => 'Erste',
+        'is_default' => false,
+    ]);
+    SongArrangement::factory()->create([
+        'song_id' => $song->id,
+        'name' => 'Zweite',
+        'is_default' => false,
+    ]);
+
+    $serviceSong = ServiceSong::factory()->create([
+        'cts_ccli_id' => '7115744',
+        'song_id' => null,
+        'song_arrangement_id' => null,
+    ]);
+
+    $service = app(SongMatchingService::class);
+    $service->autoMatch($serviceSong);
+
+    $serviceSong->refresh();
+    expect($serviceSong->song_arrangement_id)->toBe($firstArrangement->id);
+});
+
 test('manualAssign ordnet Song manuell zu', function () {
     $song = Song::factory()->create(['has_translation' => true]);
     $serviceSong = ServiceSong::factory()->create([
@@ -138,6 +213,51 @@
     expect($serviceSong->matched_at)->not->toBeNull();
 });
 
+test('manualAssign setzt song_arrangement_id wenn null', function () {
+    $song = Song::factory()->create();
+    $arrangement = SongArrangement::factory()->create([
+        'song_id' => $song->id,
+        'name' => 'normal',
+    ]);
+
+    $serviceSong = ServiceSong::factory()->create([
+        'song_id' => null,
+        'song_arrangement_id' => null,
+    ]);
+
+    $service = app(SongMatchingService::class);
+    $service->manualAssign($serviceSong, $song);
+
+    $serviceSong->refresh();
+    expect($serviceSong->song_arrangement_id)->toBe($arrangement->id);
+});
+
+test('manualAssign behält bestehende song_arrangement_id bei', function () {
+    $oldSong = Song::factory()->create();
+    $oldArrangement = SongArrangement::factory()->create([
+        'song_id' => $oldSong->id,
+        'name' => 'old',
+    ]);
+
+    $newSong = Song::factory()->create();
+    $newArrangement = SongArrangement::factory()->create([
+        'song_id' => $newSong->id,
+        'name' => 'new',
+    ]);
+
+    $serviceSong = ServiceSong::factory()->create([
+        'song_id' => $oldSong->id,
+        'song_arrangement_id' => $oldArrangement->id,
+    ]);
+
+    $service = app(SongMatchingService::class);
+    $service->manualAssign($serviceSong, $newSong);
+
+    $serviceSong->refresh();
+    expect($serviceSong->song_id)->toBe($newSong->id);
+    expect($serviceSong->song_arrangement_id)->toBe($oldArrangement->id);
+});
+
 test('requestCreation sendet E-Mail und setzt request_sent_at', function () {
     Mail::fake();