handle when title is changing properly

server/src/main/kotlin/eu/kanade/tachiyomi/source/LocalSource.kt

@@ -2,7 +2,6 @@ package eu.kanade.tachiyomi.source
 
 // import com.github.junrar.Archive
 // import java.util.zip.ZipFile
-import com.google.gson.JsonParser
 import eu.kanade.tachiyomi.source.model.Filter
 import eu.kanade.tachiyomi.source.model.FilterList
 import eu.kanade.tachiyomi.source.model.MangasPage
@@ -170,7 +169,7 @@ class LocalSource(override val baseUrl: String = "") : HttpSource() {
                 url = mangaDir.name
 
                 // Try to find the cover
-                val cover = File("${applicationDirs.localMangaRoot}/$title/cover.jpg")
+                val cover = File("${applicationDirs.localMangaRoot}/$url/cover.jpg")
                 if (cover.exists()) {
                     thumbnail_url = "http://${cover.absolutePath}"
                 }
@@ -209,7 +208,6 @@ class LocalSource(override val baseUrl: String = "") : HttpSource() {
             ?.apply {
                 val obj = json.decodeFromStream<JsonObject>(inputStream())
 
-
                 manga.title = obj["title"]?.jsonPrimitive?.contentOrNull ?: manga.title
                 manga.author = obj["author"]?.jsonPrimitive?.contentOrNull ?: manga.author
                 manga.artist = obj["artist"]?.jsonPrimitive?.contentOrNull ?: manga.artist

server/src/main/kotlin/suwayomi/tachidesk/manga/impl/Chapter.kt

@@ -18,9 +18,9 @@ import org.jetbrains.exposed.sql.select
 import org.jetbrains.exposed.sql.transactions.transaction
 import org.jetbrains.exposed.sql.update
 import suwayomi.tachidesk.manga.impl.Manga.getManga
-import suwayomi.tachidesk.manga.impl.Page.getChapterDir
 import suwayomi.tachidesk.manga.impl.Page.getPageName
 import suwayomi.tachidesk.manga.impl.util.GetHttpSource.getHttpSource
+import suwayomi.tachidesk.manga.impl.util.getChapterDir
 import suwayomi.tachidesk.manga.impl.util.lang.awaitSingle
 import suwayomi.tachidesk.manga.impl.util.storage.CachedImageResponse
 import suwayomi.tachidesk.manga.model.dataclass.ChapterDataClass

server/src/main/kotlin/suwayomi/tachidesk/manga/impl/Manga.kt

@@ -24,6 +24,7 @@ import suwayomi.tachidesk.manga.impl.util.lang.awaitSingle
 import suwayomi.tachidesk.manga.impl.util.network.await
 import suwayomi.tachidesk.manga.impl.util.storage.CachedImageResponse.clearCachedImage
 import suwayomi.tachidesk.manga.impl.util.storage.CachedImageResponse.getCachedImageResponse
+import suwayomi.tachidesk.manga.impl.util.updateMangaDownloadDir
 import suwayomi.tachidesk.manga.model.dataclass.MangaDataClass
 import suwayomi.tachidesk.manga.model.dataclass.toGenreList
 import suwayomi.tachidesk.manga.model.table.MangaMetaTable
@@ -75,7 +76,13 @@ object Manga {
 
             transaction {
                 MangaTable.update({ MangaTable.id eq mangaId }) {
+
+                    if (fetchedManga.title != mangaEntry[MangaTable.title]) {
+                        val canUpdateTitle = updateMangaDownloadDir(mangaId, fetchedManga.title)
+
+                        if (canUpdateTitle)
                             it[MangaTable.title] = fetchedManga.title
+                    }
                     it[MangaTable.initialized] = true
 
                     it[MangaTable.artist] = fetchedManga.artist

server/src/main/kotlin/suwayomi/tachidesk/manga/impl/Page.kt

@@ -17,10 +17,10 @@ import org.kodein.di.DI
 import org.kodein.di.conf.global
 import org.kodein.di.instance
 import suwayomi.tachidesk.manga.impl.util.GetHttpSource.getHttpSource
+import suwayomi.tachidesk.manga.impl.util.getChapterDir
 import suwayomi.tachidesk.manga.impl.util.lang.awaitSingle
 import suwayomi.tachidesk.manga.impl.util.storage.CachedImageResponse
 import suwayomi.tachidesk.manga.impl.util.storage.CachedImageResponse.getCachedImageResponse
-import suwayomi.tachidesk.manga.impl.util.storage.SafePath
 import suwayomi.tachidesk.manga.model.table.ChapterTable
 import suwayomi.tachidesk.manga.model.table.MangaTable
 import suwayomi.tachidesk.manga.model.table.PageTable
@@ -92,21 +92,4 @@ object Page {
     private fun formatPageName(index: Int) = String.format("%03d", index)
 
     private val applicationDirs by DI.global.instance<ApplicationDirs>()
-
-    fun getChapterDir(mangaId: Int, chapterId: Int): String {
-        val mangaEntry = transaction { MangaTable.select { MangaTable.id eq mangaId }.first() }
-        val source = getHttpSource(mangaEntry[MangaTable.sourceReference])
-        val chapterEntry = transaction { ChapterTable.select { ChapterTable.id eq chapterId }.first() }
-
-        val sourceDir = source.toString()
-        val mangaDir = SafePath.buildValidFilename(mangaEntry[MangaTable.title])
-        val chapterDir = SafePath.buildValidFilename(
-            when {
-                chapterEntry[ChapterTable.scanlator] != null -> "${chapterEntry[ChapterTable.scanlator]}_${chapterEntry[ChapterTable.name]}"
-                else -> chapterEntry[ChapterTable.name]
-            }
-        )
-
-        return "${applicationDirs.mangaRoot}/$sourceDir/$mangaDir/$chapterDir"
-    }
 }

server/src/main/kotlin/suwayomi/tachidesk/manga/impl/util/DirName.kt

@@ -0,0 +1,66 @@
+package suwayomi.tachidesk.manga.impl.util
+
+/*
+ * Copyright (C) Contributors to the Suwayomi project
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+import org.jetbrains.exposed.sql.select
+import org.jetbrains.exposed.sql.transactions.transaction
+import org.kodein.di.DI
+import org.kodein.di.conf.global
+import org.kodein.di.instance
+import suwayomi.tachidesk.manga.impl.util.storage.SafePath
+import suwayomi.tachidesk.manga.model.table.ChapterTable
+import suwayomi.tachidesk.manga.model.table.MangaTable
+import suwayomi.tachidesk.server.ApplicationDirs
+import java.io.File
+
+
+private val applicationDirs by DI.global.instance<ApplicationDirs>()
+
+fun getMangaDir(mangaId: Int): String {
+    val mangaEntry = transaction { MangaTable.select { MangaTable.id eq mangaId }.first() }
+    val source = GetHttpSource.getHttpSource(mangaEntry[MangaTable.sourceReference])
+
+    val sourceDir = source.toString()
+    val mangaDir = SafePath.buildValidFilename(mangaEntry[MangaTable.title])
+
+    return "$applicationDirs.mangaRoot}/$sourceDir/$mangaDir"
+}
+
+fun getChapterDir(mangaId: Int, chapterId: Int): String {
+    val chapterEntry = transaction { ChapterTable.select { ChapterTable.id eq chapterId }.first() }
+
+    val chapterDir = SafePath.buildValidFilename(
+        when {
+            chapterEntry[ChapterTable.scanlator] != null -> "${chapterEntry[ChapterTable.scanlator]}_${chapterEntry[ChapterTable.name]}"
+            else -> chapterEntry[ChapterTable.name]
+        }
+    )
+
+    return getMangaDir(mangaId) + "/$chapterDir"
+}
+
+/** return value says if rename/move was successful */
+fun updateMangaDownloadDir(mangaId: Int, newTitle: String): Boolean {
+    val mangaEntry = transaction { MangaTable.select { MangaTable.id eq mangaId }.first() }
+    val source = GetHttpSource.getHttpSource(mangaEntry[MangaTable.sourceReference])
+
+    val sourceDir = source.toString()
+    val mangaDir = SafePath.buildValidFilename(mangaEntry[MangaTable.title])
+
+    val newMangaDir = SafePath.buildValidFilename(newTitle)
+
+    val oldDir = "${applicationDirs.mangaRoot}/$sourceDir/$mangaDir"
+    val newDir = "${applicationDirs.mangaRoot}/$sourceDir/$newMangaDir"
+
+    val oldDirFile = File(oldDir)
+    val newDirFile = File(newDir)
+
+    return if (oldDirFile.exists())
+        oldDirFile.renameTo(newDirFile)
+    else true
+}