Chapter Fetch Improvements (#754)

* Chapter fetch improvements

* Update previous date uploads

* Lint

* Fix backup inserts

* Remove extra maxSeenUploadDate

* Port downloaded over

* Make sure to set isDownloaded on all inserts

server/src/main/kotlin/eu/kanade/tachiyomi/util/chapter/ChapterSanitizer.kt

@@ -0,0 +1,45 @@
+package eu.kanade.tachiyomi.util.chapter
+
+object ChapterSanitizer {
+    fun String.sanitize(title: String): String {
+        return trim()
+            .removePrefix(title)
+            .trim(*CHAPTER_TRIM_CHARS)
+    }
+
+    private val CHAPTER_TRIM_CHARS =
+        arrayOf(
+            // Whitespace
+            ' ',
+            '\u0009',
+            '\u000A',
+            '\u000B',
+            '\u000C',
+            '\u000D',
+            '\u0020',
+            '\u0085',
+            '\u00A0',
+            '\u1680',
+            '\u2000',
+            '\u2001',
+            '\u2002',
+            '\u2003',
+            '\u2004',
+            '\u2005',
+            '\u2006',
+            '\u2007',
+            '\u2008',
+            '\u2009',
+            '\u200A',
+            '\u2028',
+            '\u2029',
+            '\u202F',
+            '\u205F',
+            '\u3000',
+            // Separators
+            '-',
+            '_',
+            ',',
+            ':',
+        ).toCharArray()
+}

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

@@ -7,17 +7,21 @@ package suwayomi.tachidesk.manga.impl
  * 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 com.google.common.cache.Cache
+import com.google.common.cache.CacheBuilder
 import eu.kanade.tachiyomi.source.model.SChapter
 import eu.kanade.tachiyomi.source.model.SManga
 import eu.kanade.tachiyomi.source.online.HttpSource
 import eu.kanade.tachiyomi.util.chapter.ChapterRecognition
+import eu.kanade.tachiyomi.util.chapter.ChapterSanitizer.sanitize
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
 import kotlinx.serialization.Serializable
 import mu.KotlinLogging
 import org.jetbrains.exposed.dao.id.EntityID
 import org.jetbrains.exposed.sql.Op
 import org.jetbrains.exposed.sql.ResultRow
 import org.jetbrains.exposed.sql.SortOrder
-import org.jetbrains.exposed.sql.SortOrder.ASC
 import org.jetbrains.exposed.sql.SqlExpressionBuilder.inList
 import org.jetbrains.exposed.sql.and
 import org.jetbrains.exposed.sql.batchInsert
@@ -41,7 +45,11 @@ import suwayomi.tachidesk.manga.model.table.MangaTable
 import suwayomi.tachidesk.manga.model.table.PageTable
 import suwayomi.tachidesk.manga.model.table.toDataClass
 import suwayomi.tachidesk.server.serverConfig
+import java.lang.Long
 import java.time.Instant
+import java.util.TreeSet
+import java.util.concurrent.TimeUnit
+import kotlin.math.max
 
 object Chapter {
     private val logger = KotlinLogging.logger { }
@@ -109,7 +117,15 @@ object Chapter {
         }
     }
 
+    val map: Cache<Int, Mutex> =
+        CacheBuilder.newBuilder()
+            .expireAfterAccess(10, TimeUnit.MINUTES)
+            .build()
+
     suspend fun fetchChapterList(mangaId: Int): List<SChapter> {
+        val mutex = map.get(mangaId) { Mutex() }
+        val chapterList =
+            mutex.withLock {
                 val manga = getManga(mangaId)
                 val source = getCatalogueSourceOrStub(manga.sourceId.toLong())
 
@@ -127,14 +143,20 @@ object Chapter {
                     (source as? HttpSource)?.prepareNewChapter(chapter, sManga)
                     val chapterNumber = ChapterRecognition.parseChapterNumber(manga.title, chapter.name, chapter.chapter_number.toDouble())
                     chapter.chapter_number = chapterNumber.toFloat()
+                    chapter.name = chapter.name.sanitize(manga.title)
+                    chapter.scanlator = chapter.scanlator?.ifBlank { null }
                 }
 
                 val now = Instant.now().epochSecond
+                // Used to not set upload date of older chapters
+                // to a higher value than newer chapters
+                var maxSeenUploadDate = 0L
+
                 val chaptersInDb =
                     transaction {
                         ChapterTable.select { ChapterTable.manga eq mangaId }
                             .map { ChapterTable.toDataClass(it) }
-                    .toSet()
+                            .toList()
                     }
 
                 val chaptersToInsert = mutableListOf<ChapterDataClass>()
@@ -156,24 +178,83 @@ object Chapter {
                         )
 
                     if (chapterEntry == null) {
-                chaptersToInsert.add(chapterData)
+                        val newChapterData =
+                            if (chapterData.uploadDate == 0L) {
+                                val altDateUpload = if (maxSeenUploadDate == 0L) now else maxSeenUploadDate
+                                chapterData.copy(uploadDate = altDateUpload)
                             } else {
-                chaptersToUpdate.add(chapterData)
+                                maxSeenUploadDate = max(maxSeenUploadDate, chapterData.uploadDate)
+                                chapterData
+                            }
+                        chaptersToInsert.add(newChapterData)
+                    } else {
+                        val newChapterData =
+                            if (chapterData.uploadDate == 0L) {
+                                chapterData.copy(uploadDate = chapterEntry.uploadDate)
+                            } else {
+                                chapterData
+                            }
+                        chaptersToUpdate.add(newChapterData)
+                    }
+                }
+
+                val deletedChapterNumbers = TreeSet<Float>()
+                val deletedReadChapterNumbers = TreeSet<Float>()
+                val deletedBookmarkedChapterNumbers = TreeSet<Float>()
+                val deletedDownloadedChapterNumbers = TreeSet<Float>()
+                val deletedChapterNumberDateFetchMap = mutableMapOf<Float, kotlin.Long>()
+
+                // clear any orphaned/duplicate chapters that are in the db but not in `chapterList`
+                val dbChapterCount = chaptersInDb.count()
+                if (dbChapterCount > chapterList.size) { // we got some clean up due
+                    val chapterUrls = chapterList.map { it.url }.toSet()
+
+                    val chaptersIdsToDelete =
+                        chaptersInDb.mapNotNull { dbChapter ->
+                            if (!chapterUrls.contains(dbChapter.url)) {
+                                if (dbChapter.read) deletedReadChapterNumbers.add(dbChapter.chapterNumber)
+                                if (dbChapter.bookmarked) deletedBookmarkedChapterNumbers.add(dbChapter.chapterNumber)
+                                if (dbChapter.downloaded) deletedDownloadedChapterNumbers.add(dbChapter.chapterNumber)
+                                deletedChapterNumbers.add(dbChapter.chapterNumber)
+                                deletedChapterNumberDateFetchMap[dbChapter.chapterNumber] = dbChapter.fetchedAt
+                                dbChapter.id
+                            } else {
+                                null
+                            }
+                        }
+
+                    transaction {
+                        PageTable.deleteWhere { PageTable.chapter inList chaptersIdsToDelete }
+                        ChapterTable.deleteWhere { ChapterTable.id inList chaptersIdsToDelete }
                     }
                 }
 
                 transaction {
                     if (chaptersToInsert.isNotEmpty()) {
-                ChapterTable.batchInsert(chaptersToInsert) {
+                        ChapterTable.batchInsert(chaptersToInsert) { chapter ->
-                    this[ChapterTable.url] = it.url
+                            this[ChapterTable.url] = chapter.url
-                    this[ChapterTable.name] = it.name
+                            this[ChapterTable.name] = chapter.name
-                    this[ChapterTable.date_upload] = it.uploadDate
+                            this[ChapterTable.date_upload] = chapter.uploadDate
-                    this[ChapterTable.chapter_number] = it.chapterNumber
+                            this[ChapterTable.chapter_number] = chapter.chapterNumber
-                    this[ChapterTable.scanlator] = it.scanlator
+                            this[ChapterTable.scanlator] = chapter.scanlator
-                    this[ChapterTable.sourceOrder] = it.index
+                            this[ChapterTable.sourceOrder] = chapter.index
-                    this[ChapterTable.fetchedAt] = it.fetchedAt
+                            this[ChapterTable.fetchedAt] = chapter.fetchedAt
-                    this[ChapterTable.manga] = it.mangaId
+                            this[ChapterTable.manga] = chapter.mangaId
-                    this[ChapterTable.realUrl] = it.realUrl
+                            this[ChapterTable.realUrl] = chapter.realUrl
+                            this[ChapterTable.isRead] = false
+                            this[ChapterTable.isBookmarked] = false
+                            this[ChapterTable.isDownloaded] = false
+
+                            // is recognized chapter number
+                            if (chapter.chapterNumber >= 0f && chapter.chapterNumber in deletedChapterNumbers) {
+                                this[ChapterTable.isRead] = chapter.chapterNumber in deletedReadChapterNumbers
+                                this[ChapterTable.isBookmarked] = chapter.chapterNumber in deletedBookmarkedChapterNumbers
+                                this[ChapterTable.isDownloaded] = chapter.chapterNumber in deletedDownloadedChapterNumbers
+                                // Try to use the fetch date of the original entry to not pollute 'Updates' tab
+                                deletedChapterNumberDateFetchMap[chapter.chapterNumber]?.let {
+                                    this[ChapterTable.fetchedAt] = it
+                                }
+                            }
                         }
                     }
 
@@ -203,40 +284,13 @@ object Chapter {
                             .orderBy(ChapterTable.sourceOrder to SortOrder.DESC).toList()
                     }
 
-        // clear any orphaned/duplicate chapters that are in the db but not in `chapterList`
-        val dbChapterCount = newChapters.count()
-        if (dbChapterCount > chapterList.size) { // we got some clean up due
-            val dbChapterList =
-                transaction {
-                    ChapterTable.select { ChapterTable.manga eq mangaId }
-                        .orderBy(ChapterTable.url to ASC).toList()
-                }
-
-            val chapterUrls = chapterList.map { it.url }.toSet()
-
-            val chaptersIdsToDelete =
-                dbChapterList.mapIndexedNotNull { index, dbChapter ->
-                    val isOrphaned = !chapterUrls.contains(dbChapter[ChapterTable.url])
-                    val isDuplicate =
-                        index < dbChapterList.lastIndex && dbChapter[ChapterTable.url] == dbChapterList[index + 1][ChapterTable.url]
-                    val deleteChapter = isOrphaned || isDuplicate
-                    if (deleteChapter) {
-                        dbChapter[ChapterTable.id].value
-                    } else {
-                        null
-                    }
-                }
-
-            transaction {
-                PageTable.deleteWhere { PageTable.chapter inList chaptersIdsToDelete }
-                ChapterTable.deleteWhere { ChapterTable.id inList chaptersIdsToDelete }
-            }
-        }
-
                 if (manga.inLibrary) {
                     downloadNewChapters(mangaId, numberOfCurrentChapters, newChapters)
                 }
 
+                chapterList
+            }
+
         return chapterList
     }
 

server/src/main/kotlin/suwayomi/tachidesk/manga/impl/backup/proto/ProtoBackupImport.kt

@@ -22,6 +22,7 @@ import okio.buffer
 import okio.gzip
 import okio.source
 import org.jetbrains.exposed.sql.and
+import org.jetbrains.exposed.sql.batchInsert
 import org.jetbrains.exposed.sql.insert
 import org.jetbrains.exposed.sql.insertAndGetId
 import org.jetbrains.exposed.sql.select
@@ -294,23 +295,25 @@ object ProtoBackupImport : ProtoBackupBase() {
 
                 // insert chapter data
                 val chaptersLength = chapters.size
-                chapters.forEach { chapter ->
+                ChapterTable.batchInsert(chapters) { chapter ->
-                    ChapterTable.insert {
+                    this[ChapterTable.url] = chapter.url
-                        it[url] = chapter.url
+                    this[ChapterTable.name] = chapter.name
-                        it[name] = chapter.name
+                    if (chapter.date_upload == 0L) {
-                        it[date_upload] = chapter.date_upload
+                        this[ChapterTable.date_upload] = chapter.date_fetch
-                        it[chapter_number] = chapter.chapter_number
+                    } else {
-                        it[scanlator] = chapter.scanlator
+                        this[ChapterTable.date_upload] = chapter.date_upload
-
-                        it[sourceOrder] = chaptersLength - chapter.source_order
-                        it[ChapterTable.manga] = mangaId
-
-                        it[isRead] = chapter.read
-                        it[lastPageRead] = chapter.last_page_read
-                        it[isBookmarked] = chapter.bookmark
-
-                        it[fetchedAt] = TimeUnit.MILLISECONDS.toSeconds(chapter.date_fetch)
                     }
+                    this[ChapterTable.chapter_number] = chapter.chapter_number
+                    this[ChapterTable.scanlator] = chapter.scanlator
+
+                    this[ChapterTable.sourceOrder] = chaptersLength - chapter.source_order
+                    this[ChapterTable.manga] = mangaId
+
+                    this[ChapterTable.isRead] = chapter.read
+                    this[ChapterTable.lastPageRead] = chapter.last_page_read
+                    this[ChapterTable.isBookmarked] = chapter.bookmark
+
+                    this[ChapterTable.fetchedAt] = TimeUnit.MILLISECONDS.toSeconds(chapter.date_fetch)
                 }
 
                 // insert categories
@@ -350,7 +353,11 @@ object ProtoBackupImport : ProtoBackupBase() {
                         ChapterTable.insert {
                             it[url] = chapter.url
                             it[name] = chapter.name
+                            if (chapter.date_upload == 0L) {
+                                it[date_upload] = chapter.date_fetch
+                            } else {
                                 it[date_upload] = chapter.date_upload
+                            }
                             it[chapter_number] = chapter.chapter_number
                             it[scanlator] = chapter.scanlator
 

server/src/main/kotlin/suwayomi/tachidesk/manga/impl/download/fileProvider/ChaptersFilesProvider.kt

@@ -15,7 +15,7 @@ import java.io.InputStream
 
 /*
 * Base class for downloaded chapter files provider, example: Folder, Archive
-* */
+*/
 abstract class ChaptersFilesProvider(val mangaId: Int, val chapterId: Int) : DownloadedFilesProvider {
     abstract fun getImageImpl(index: Int): Pair<InputStream, String>
 

server/src/main/kotlin/suwayomi/tachidesk/manga/model/dataclass/ChapterDataClass.kt

@@ -56,7 +56,7 @@ data class ChapterDataClass(
                 name = sChapter.name,
                 uploadDate = sChapter.date_upload,
                 chapterNumber = sChapter.chapter_number,
-                scanlator = sChapter.scanlator ?: "",
+                scanlator = sChapter.scanlator,
                 index = index,
                 fetchedAt = fetchedAt,
                 realUrl = realUrl,

server/src/main/kotlin/suwayomi/tachidesk/server/database/migration/M0030_FixDateUpload.kt

@@ -0,0 +1,21 @@
+package suwayomi.tachidesk.server.database.migration
+
+/*
+ * 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 de.neonew.exposed.migrations.helpers.SQLMigration
+
+@Suppress("ClassName", "unused")
+class M0030_FixDateUpload : SQLMigration() {
+    // language=h2
+    override val sql =
+        """
+        UPDATE CHAPTER 
+        SET DATE_UPLOAD = (FETCHED_AT * 1000)
+        WHERE DATE_UPLOAD = 0;
+        """.trimIndent()
+}