fix: scanner should ignore hidden files

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

@@ -16,6 +16,7 @@ import java.nio.file.attribute.BasicFileAttributes
 import java.nio.file.attribute.FileTime
 import java.time.LocalDateTime
 import java.time.ZoneId
+import kotlin.io.path.isHidden
 import kotlin.streams.asSequence
 import kotlin.time.measureTime
 
@@ -72,6 +73,7 @@ class FileSystemScanner(
           val books = Files.list(dir).use { dirStream ->
             dirStream.asSequence()
               .onEach { logger.trace { "GetBooks file: $it" } }
+              .filterNot { Files.isHidden(it) }
               .filter { Files.isReadable(it) }
               .filter { Files.isRegularFile(it) }
               .filter { supportedExtensions.contains(FilenameUtils.getExtension(it.fileName.toString()).toLowerCase()) }

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

@@ -129,6 +129,27 @@ class FileSystemScannerTest {
     }
   }
 
+  @Test
+  fun `given directory structure with hidden files when scanning then hidden files 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", ".comic2.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 file with mixed-case extension when scanning then files are returned`() {
     Jimfs.newFileSystem(Configuration.unix()).use { fs ->