fix: scanner would not ignore hidden directories properly

komga/src/main/kotlin/org/gotson/komga/domain/service/FileSystemScanner.kt

@@ -45,7 +45,7 @@ class FileSystemScanner(
         object : FileVisitor<Path> {
           override fun preVisitDirectory(dir: Path, attrs: BasicFileAttributes?): FileVisitResult {
             logger.trace { "preVisit: $dir" }
-            if (!Files.isHidden(dir) && komgaProperties.librariesScanDirectoryExclusions.any { exclude ->
+            if (Files.isHidden(dir) || komgaProperties.librariesScanDirectoryExclusions.any { exclude ->
               dir.toString().contains(exclude, true)
             }
             ) return FileVisitResult.SKIP_SUBTREE

komga/src/test/kotlin/org/gotson/komga/domain/service/FileSystemScannerTest.kt

@@ -129,6 +129,29 @@ class FileSystemScannerTest {
     }
   }
 
+  @Test
+  fun `given directory structure with hidden directories when scanning then hidden directories are not returned`() {
+    Jimfs.newFileSystem(Configuration.unix()).use { fs ->
+      // given
+      val root = fs.getPath("/root")
+      Files.createDirectory(root)
+
+      val dir1 = makeSubDir(root, "dir1", listOf("comic.cbz"))
+      makeSubDir(dir1, "subdir1", listOf("comic2.cbz"))
+      val hidden = makeSubDir(root, ".hidden", listOf("hidden.cbz"))
+      makeSubDir(hidden, "subhidden", listOf("hidden2.cbz"))
+
+      // when
+      val scan = scanner.scanRootFolder(root)
+
+      // then
+      assertThat(scan).hasSize(2)
+
+      assertThat(scan.keys.map { it.name }).containsExactlyInAnyOrder("dir1", "subdir1")
+      assertThat(scan.values.flatMap { list -> list.map { it.name } }).containsExactlyInAnyOrder("comic", "comic2")
+    }
+  }
+
   @Test
   fun `given directory structure with hidden files when scanning then hidden files are not returned`() {
     Jimfs.newFileSystem(Configuration.unix()).use { fs ->