Lychee v3 redirect

app/Http/Kernel.php

@@ -108,5 +108,6 @@ class Kernel extends HttpKernel
 		'resolve_album_slug' => \App\Http\Middleware\ResolveAlbumSlug::class,
 		'response_cache' => \App\Http\Middleware\Caching\ResponseCache::class,
 		'album_cache_refresher' => \App\Http\Middleware\Caching\AlbumRouteCacheRefresher::class,
+		'legacy_id_redirect' => \App\Http\Middleware\LegacyLocalIdRedirect::class,
 	];
 }

app/Http/Middleware/LegacyLocalIdRedirect.php

@@ -0,0 +1,47 @@
+<?php
+
+/**
+ * SPDX-License-Identifier: MIT
+ * Copyright (c) 2017-2018 Tobias Reich
+ * Copyright (c) 2018-2026 LycheeOrg.
+ */
+
+namespace App\Http\Middleware;
+
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Schema;
+use function Safe\preg_match;
+use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
+
+class LegacyLocalIdRedirect
+{
+	/**
+	 * Handles redirection from old albums (Lychee v3 format).
+	 *
+	 * @param \Illuminate\Http\Request $request
+	 * @param \Closure                 $next
+	 *
+	 * @return mixed
+	 */
+	public function handle(Request $request, \Closure $next)
+	{
+		// Also skip if the column does not exists.
+		// That way we don't crash on database which had this column removed.
+		$album_id = $request->route('albumId');
+		if ($album_id !== null &&
+			preg_match('/^\d{14}$/', (string) $album_id) === 1 &&
+			Schema::hasColumn('base_albums', 'legacy_id')
+		) {
+			$album = DB::table('base_albums')->where('legacy_id', '=', $album_id)->first();
+			if ($album === null) {
+				throw new NotFoundHttpException();
+			}
+
+			// redirect to new gallery route with the resolved id
+			return redirect()->route('gallery', $album->id, 301);
+		}
+
+		return $next($request);
+	}
+}

database/migrations/2025_05_27_081037_drop_legacy_id.php

@@ -31,8 +31,9 @@ public function up(): void
 		Schema::table('photos', function (Blueprint $table) {
 			$table->dropColumn(self::LEGACY_ID_NAME);
 		});
+
 		Schema::table('base_albums', function (Blueprint $table) {
-			$table->dropColumn(self::LEGACY_ID_NAME);
+			$table->unsignedBigInteger(self::LEGACY_ID_NAME)->nullable(true)->change();
 		});
 
 		DB::table('configs')
@@ -45,9 +46,12 @@ public function up(): void
 	 */
 	public function down(): void
 	{
-		Schema::table('base_albums', function (Blueprint $table) {
-			$table->unsignedBigInteger('legacy_id')->after('id')->nullable(false);
-		});
+		// Do not re-add the column... if it already exists.
+		if (!Schema::hasColumn('base_albums', self::LEGACY_ID_NAME)) {
+			Schema::table('base_albums', function (Blueprint $table) {
+				$table->unsignedBigInteger('legacy_id')->after('id')->nullable(false);
+			});
+		}
 
 		Schema::table('photos', function (Blueprint $table) {
 			$table->unsignedBigInteger('legacy_id')->after('id')->nullable(false);

routes/web_v2.php

@@ -55,7 +55,7 @@
 Route::get('/', VueController::class)->name('home')->middleware(['migration:complete']);
 Route::get('/home', VueController::class)->name('homepage')->middleware(['migration:complete']);
 Route::get('/flow/{albumId?}/{photoId?}', [VueController::class, 'gallery'])->name('flow')->middleware(['migration:complete', 'unlock_with_password', 'resolve_album_slug']);
-Route::get('/gallery/{albumId?}/{photoId?}', [VueController::class, 'gallery'])->name('gallery')->middleware(['migration:complete', 'unlock_with_password', 'resolve_album_slug']);
+Route::get('/gallery/{albumId?}/{photoId?}', [VueController::class, 'gallery'])->name('gallery')->middleware(['migration:complete', 'legacy_id_redirect', 'unlock_with_password', 'resolve_album_slug']);
 Route::get('/frame/{albumId?}', [VueController::class, 'gallery'])->name('frame')->middleware(['migration:complete', 'resolve_album_slug']);
 Route::get('/map/{albumId?}', [VueController::class, 'gallery'])->name('map')->middleware(['migration:complete', 'resolve_album_slug']);
 Route::get('/search/{albumId?}/{photoId?}', [VueController::class, 'gallery'])->name('search')->middleware(['migration:complete', 'resolve_album_slug']);