Add information about last time manga and chapters were fetched from source

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

@@ -100,6 +100,10 @@ object Chapter {
                     }
                 }
             }
+
+            MangaTable.update({ MangaTable.id eq mangaId }) {
+                it[MangaTable.chaptersLastFetchedAt] = Instant.now().epochSecond
+            }
         }
 
         // clear any orphaned/duplicate chapters that are in the db but not in `chapterList`

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

@@ -42,6 +42,7 @@ import uy.kohesive.injekt.injectLazy
 import java.io.File
 import java.io.IOException
 import java.io.InputStream
+import java.time.Instant
 
 object Manga {
     private fun truncate(text: String?, maxLength: Int): String? {
@@ -90,6 +91,8 @@ object Manga {
                     it[MangaTable.realUrl] = runCatching {
                         (source as? HttpSource)?.mangaDetailsRequest(sManga)?.url?.toString()
                     }.getOrNull()
+
+                    it[MangaTable.lastFetchedAt] = Instant.now().epochSecond
                 }
             }
 
@@ -117,6 +120,8 @@ object Manga {
                 getSource(mangaEntry[MangaTable.sourceReference]),
                 getMangaMetaMap(mangaId),
                 mangaEntry[MangaTable.realUrl],
+                mangaEntry[MangaTable.lastFetchedAt],
+                mangaEntry[MangaTable.chaptersLastFetchedAt],
                 true
             )
         }
@@ -142,6 +147,8 @@ object Manga {
         getSource(mangaEntry[MangaTable.sourceReference]),
         getMangaMetaMap(mangaId),
         mangaEntry[MangaTable.realUrl],
+        mangaEntry[MangaTable.lastFetchedAt],
+        mangaEntry[MangaTable.chaptersLastFetchedAt],
         false
     )
 

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

@@ -88,6 +88,8 @@ object MangaList {
                         0,
                         meta = getMangaMetaMap(mangaId),
                         realUrl = mangaEntry[MangaTable.realUrl],
+                        lastFetchedAt = mangaEntry[MangaTable.lastFetchedAt],
+                        chaptersLastFetchedAt = mangaEntry[MangaTable.chaptersLastFetchedAt],
                         freshData = true
                     )
                 } else {
@@ -111,6 +113,8 @@ object MangaList {
                         mangaEntry[MangaTable.inLibraryAt],
                         meta = getMangaMetaMap(mangaId),
                         realUrl = mangaEntry[MangaTable.realUrl],
+                        lastFetchedAt = mangaEntry[MangaTable.lastFetchedAt],
+                        chaptersLastFetchedAt = mangaEntry[MangaTable.chaptersLastFetchedAt],
                         freshData = false
                     )
                 }

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

@@ -9,6 +9,7 @@ package suwayomi.tachidesk.manga.model.dataclass
 
 import suwayomi.tachidesk.manga.impl.util.lang.trimAll
 import suwayomi.tachidesk.manga.model.table.MangaStatus
+import java.time.Instant
 
 data class MangaDataClass(
     val id: Int,
@@ -33,11 +34,16 @@ data class MangaDataClass(
     val meta: Map<String, String> = emptyMap(),
 
     val realUrl: String? = null,
+    var lastFetchedAt: Long? = 0,
+    var chaptersLastFetchedAt: Long? = 0,
 
     val freshData: Boolean = false,
     var unreadCount: Int? = null,
     var downloadCount: Int? = null,
-    var chapterCount: Int? = null
+    var chapterCount: Int? = null,
+
+    val age: Long? = if (lastFetchedAt == null) 0 else Instant.now().epochSecond.minus(lastFetchedAt),
+    val chaptersAge: Long? = if (chaptersLastFetchedAt == null) null else Instant.now().epochSecond.minus(chaptersLastFetchedAt)
 )
 
 data class PagedMangaListDataClass(

server/src/main/kotlin/suwayomi/tachidesk/manga/model/table/MangaTable.kt

@@ -38,6 +38,9 @@ object MangaTable : IntIdTable() {
 
     /** the real url of a manga used for the "open in WebView" feature */
     val realUrl = varchar("real_url", 2048).nullable()
+
+    val lastFetchedAt = long("last_fetched_at").default(0)
+    val chaptersLastFetchedAt = long("chapters_last_fetched_at").default(0)
 }
 
 fun MangaTable.toDataClass(mangaEntry: ResultRow) =
@@ -59,7 +62,9 @@ fun MangaTable.toDataClass(mangaEntry: ResultRow) =
         mangaEntry[inLibrary],
         mangaEntry[inLibraryAt],
         meta = getMangaMetaMap(mangaEntry[id].value),
-        realUrl = mangaEntry[realUrl]
+        realUrl = mangaEntry[realUrl],
+        lastFetchedAt = mangaEntry[lastFetchedAt],
+        chaptersLastFetchedAt = mangaEntry[chaptersLastFetchedAt]
     )
 
 enum class MangaStatus(val value: Int) {

server/src/main/kotlin/suwayomi/tachidesk/server/database/migration/M0020_AddMangaLastFetchedAtColumns.kt

@@ -0,0 +1,18 @@
+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 M0020_AddMangaLastFetchedAtColumns : SQLMigration() {
+    override val sql = """
+        ALTER TABLE Manga ADD COLUMN last_fetched_at BIGINT DEFAULT 0;
+        ALTER TABLE Manga ADD COLUMN chapters_last_fetched_at BIGINT DEFAULT 0;
+    """.trimIndent()
+}