Fix EHentai reading progress not carrying over

app/src/main/java/eu/kanade/tachiyomi/source/online/all/EHentai.kt

@@ -191,6 +191,8 @@ class EHentai(override val id: Long,
                 }!!.nextElementSibling().text()).time
             }
             // Build and append the rest of the galleries
+            if(DebugToggles.INCLUDE_ONLY_ROOT_WHEN_LOADING_EXH_VERSIONS.enabled) listOf(self)
+            else {
                 newDisplay.mapIndexed { index, newGallery ->
                     val link = newGallery.attr("href")
                     val name = newGallery.text()
@@ -202,6 +204,7 @@ class EHentai(override val id: Long,
                         this.date_upload = EX_DATE_FORMAT.parse(posted).time
                     }
                 }.reversed() + self
+            }
         }.toObservable()
     }
 

app/src/main/java/eu/kanade/tachiyomi/util/ChapterSourceSync.kt

@@ -6,6 +6,8 @@ import eu.kanade.tachiyomi.data.database.models.Manga
 import eu.kanade.tachiyomi.source.Source
 import eu.kanade.tachiyomi.source.model.SChapter
 import eu.kanade.tachiyomi.source.online.HttpSource
+import exh.EH_SOURCE_ID
+import exh.EXH_SOURCE_ID
 import java.util.*
 
 /**
@@ -118,6 +120,21 @@ fun syncChaptersWithSource(db: DatabaseHelper,
                     readded.add(c)
                 }
             }
+
+            // --> EXH (carry over reading progress)
+            if(manga.source == EH_SOURCE_ID || manga.source == EXH_SOURCE_ID) {
+                val finalAdded = toAdd.subtract(readded)
+                if(finalAdded.isNotEmpty()) {
+                    val max = dbChapters.maxBy { it.last_page_read }
+                    if (max != null && max.last_page_read > 0) {
+                        for (chapter in finalAdded) {
+                            chapter.last_page_read = max.last_page_read
+                        }
+                    }
+                }
+            }
+            // <-- EXH
+
             db.insertChapters(toAdd).executeAsBlocking()
         }
 

app/src/main/java/exh/debug/DebugToggles.kt

@@ -4,10 +4,16 @@ import eu.kanade.tachiyomi.data.preference.PreferencesHelper
 import uy.kohesive.injekt.injectLazy
 
 enum class DebugToggles(val default: Boolean) {
+    // Redirect to master version of gallery when encountering a gallery that has a parent/child that is already in the library
     ENABLE_EXH_ROOT_REDIRECT(true),
+    // Enable debug overlay (only available in debug builds)
     ENABLE_DEBUG_OVERLAY(true),
+    // Convert non-root galleries into root galleries when loading them
     PULL_TO_ROOT_WHEN_LOADING_EXH_MANGA_DETAILS(true),
-    RESTRICT_EXH_GALLERY_UPDATE_CHECK_FREQUENCY(true);
+    // Do not update the same gallery too often
+    RESTRICT_EXH_GALLERY_UPDATE_CHECK_FREQUENCY(true),
+    // Pretend that all galleries only have a single version
+    INCLUDE_ONLY_ROOT_WHEN_LOADING_EXH_VERSIONS(false);
 
     val prefKey = "eh_debug_toggle_${name.toLowerCase()}"
 

app/src/main/java/exh/eh/EHentaiUpdateHelper.kt

@@ -87,9 +87,7 @@ class EHentaiUpdateHelper(context: Context) {
                         .fold(accepted.chapters) { curChapters, chapter ->
                             val existing = curChapters.find { it.url == chapter.url }
 
-                            val newLastPageRead = chainsAsChapters.filter { it.date_upload < chapter.date_upload }.maxBy {
+                            val newLastPageRead = chainsAsChapters.maxBy { it.last_page_read }?.last_page_read
-                                it.last_page_read
-                            }?.last_page_read
 
                             if (existing != null) {
                                 existing.read = existing.read || chapter.read