some fixes for local manga

app/src/main/java/eu/kanade/tachiyomi/source/LocalSource.kt

@@ -49,7 +49,7 @@ class LocalSource(private val context: Context) : CatalogueSource {
             val cover = File("${dir.absolutePath}/${manga.url}", COVER_NAME)
 
             // It might not exist if using the external SD card
-            cover.parentFile.mkdirs()
+            cover.parentFile?.mkdirs()
             input.use {
                 cover.outputStream().use {
                     input.copyTo(it)
@@ -140,7 +140,8 @@ class LocalSource(private val context: Context) : CatalogueSource {
     override fun fetchLatestUpdates(page: Int) = fetchSearchManga(page, "", LATEST_FILTERS)
 
     override fun fetchMangaDetails(manga: SManga): Observable<SManga> {
-        getBaseDirectories(context).mapNotNull { File(it, manga.url).listFiles()?.toList() }
+        val baseDirs = getBaseDirectories(context)
+        baseDirs.mapNotNull { File(it, manga.url).listFiles()?.toList() }
             .flatten().filter { it.extension.equals("json") }.firstOrNull()?.apply {
                 val json = Gson().fromJson(
                     Scanner(this).useDelimiter("\\Z").next(),
@@ -154,6 +155,28 @@ class LocalSource(private val context: Context) : CatalogueSource {
                     ?: manga.genre
                 manga.status = json["status"]?.asInt ?: manga.status
             }
+        val url = manga.url
+        // Try to find the cover
+        for (dir in baseDirs) {
+            val cover = File("${dir.absolutePath}/$url", COVER_NAME)
+            if (cover.exists()) {
+                manga.thumbnail_url = cover.absolutePath
+                break
+            }
+        }
+
+        // Copy the cover from the first chapter found.
+        if (manga.thumbnail_url == null) {
+            val chapters = fetchChapterList(manga).toBlocking().first()
+            if (chapters.isNotEmpty()) {
+                try {
+                    val dest = updateCover(chapters.last(), manga)
+                    manga.thumbnail_url = dest?.absolutePath
+                } catch (e: Exception) {
+                    Timber.e(e)
+                }
+            }
+        }
         return Observable.just(manga)
     }
 

app/src/main/java/eu/kanade/tachiyomi/ui/manga/MangaDetailsPresenter.kt

@@ -84,7 +84,9 @@ class MangaDetailsPresenter(
         downloadManager.addListener(this)
         LibraryUpdateService.setListener(this)
         tracks = db.getTracks(manga).executeAsBlocking()
-        if (!manga.initialized) {
+        if (manga.source == LocalSource.ID) {
+            refreshAll()
+        } else if (!manga.initialized) {
             isLoading = true
             controller.setRefresh(true)
             controller.updateHeader()
@@ -368,7 +370,7 @@ class MangaDetailsPresenter(
 
     /** Refresh Manga Info and Chapter List (not tracking) */
     fun refreshAll() {
-        if (controller.isNotOnline()) return
+        if (controller.isNotOnline() && manga.source != LocalSource.ID) return
         scope.launch {
             isLoading = true
             var mangaError: java.lang.Exception? = null

app/src/main/res/layout/edit_manga_dialog.xml

@@ -16,6 +16,7 @@
             android:id="@+id/manga_cover"
             android:layout_width="wrap_content"
             android:adjustViewBounds="true"
+            android:minWidth="50dp"
             android:layout_height="150dp"
             android:contentDescription="@string/cover_of_image"
             android:background="@drawable/image_border_background"