Obtain file creation time

app/src/main/kotlin/org/koitharu/kotatsu/core/util/ext/File.kt

@@ -16,8 +16,10 @@ import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.fs.FileSequence
 import java.io.File
 import java.io.FileFilter
+import java.nio.file.attribute.BasicFileAttributes
 import java.util.zip.ZipEntry
 import java.util.zip.ZipFile
+import kotlin.io.path.readAttributes
 
 fun File.subdir(name: String) = File(this, name).also {
 	if (!it.exists()) it.mkdirs()
@@ -99,3 +101,10 @@ private suspend fun SequenceScope<File>.listFilesRecursiveImpl(root: File, filte
 fun File.children() = FileSequence(this)
 
 fun Sequence<File>.filterWith(filter: FileFilter): Sequence<File> = filter { f -> filter.accept(f) }
+
+val File.creationTime
+	get() = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+		toPath().readAttributes<BasicFileAttributes>().creationTime().toMillis()
+	} else {
+		lastModified()
+	}

app/src/main/kotlin/org/koitharu/kotatsu/local/data/input/LocalMangaDirInput.kt

@@ -5,6 +5,7 @@ import androidx.core.net.toUri
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.runInterruptible
 import org.koitharu.kotatsu.core.util.AlphanumComparator
+import org.koitharu.kotatsu.core.util.ext.creationTime
 import org.koitharu.kotatsu.core.util.ext.listFilesRecursive
 import org.koitharu.kotatsu.core.util.ext.longHashCode
 import org.koitharu.kotatsu.core.util.ext.toListSorted
@@ -62,7 +63,7 @@ class LocalMangaDirInput(root: File) : LocalMangaInput(root) {
 					name = f.nameWithoutExtension.toHumanReadable(),
 					number = i + 1,
 					source = MangaSource.LOCAL,
-					uploadDate = f.lastModified(),
+					uploadDate = f.creationTime,
 					url = f.toUri().toString(),
 					scanlator = null,
 					branch = null,

app/src/main/kotlin/org/koitharu/kotatsu/local/domain/model/LocalManga.kt

@@ -2,6 +2,7 @@ package org.koitharu.kotatsu.local.domain.model
 
 import androidx.core.net.toFile
 import androidx.core.net.toUri
+import org.koitharu.kotatsu.core.util.ext.creationTime
 import org.koitharu.kotatsu.parsers.model.Manga
 import org.koitharu.kotatsu.parsers.model.MangaTag
 import java.io.File
@@ -13,14 +14,7 @@ class LocalManga(
 
 	constructor(manga: Manga) : this(manga.url.toUri().toFile(), manga)
 
-	var createdAt: Long = -1L
+	val createdAt by lazy { file.creationTime }
-		private set
-		get() {
-			if (field == -1L) {
-				field = file.lastModified()
-			}
-			return field
-		}
 
 	fun isMatchesQuery(query: String): Boolean {
 		return manga.title.contains(query, ignoreCase = true) ||