Sync current page in reader. Closes #124

Upping versionCode to 68

app/src/main/java/org/zotero/android/database/requests/StorePageForItemDbRequest.kt

@@ -0,0 +1,39 @@
+package org.zotero.android.database.requests
+
+import io.realm.Realm
+import io.realm.kotlin.createObject
+import io.realm.kotlin.where
+import org.zotero.android.database.DbRequest
+import org.zotero.android.database.objects.RObjectChange
+import org.zotero.android.database.objects.RPageIndex
+import org.zotero.android.database.objects.RPageIndexChanges
+import org.zotero.android.database.objects.UpdatableChangeType
+import org.zotero.android.sync.LibraryIdentifier
+
+class StorePageForItemDbRequest(
+    private val key: String,
+    private val libraryId: LibraryIdentifier,
+    private val page: String,
+): DbRequest {
+    override val needsWrite: Boolean
+        get() = true
+
+    override fun process(database: Realm) {
+        val pageIndex: RPageIndex
+        val existing = database.where<RPageIndex>().key(this.key, this.libraryId).findFirst()
+        if (existing != null) {
+            if (existing.index == this.page) {
+                return
+            }
+            pageIndex = existing
+        } else {
+            pageIndex = database.createObject<RPageIndex>()
+            pageIndex.key = this.key
+            pageIndex.libraryId = this.libraryId
+        }
+
+        pageIndex.index = this.page
+        pageIndex.changes.add(RObjectChange.create(listOf(RPageIndexChanges.index)))
+        pageIndex.changeType = UpdatableChangeType.user.name
+    }
+}

app/src/main/java/org/zotero/android/pdf/reader/PdfReaderViewModel.kt

@@ -59,6 +59,7 @@ import org.greenrobot.eventbus.EventBus
 import org.greenrobot.eventbus.Subscribe
 import org.greenrobot.eventbus.ThreadMode
 import org.json.JSONObject
+import org.zotero.android.ZoteroApplication
 import org.zotero.android.api.network.CustomResult
 import org.zotero.android.api.pojo.sync.KeyBaseKeyPair
 import org.zotero.android.architecture.BaseViewModel2
@@ -84,6 +85,7 @@ import org.zotero.android.database.requests.EditTagsForItemDbRequest
 import org.zotero.android.database.requests.MarkObjectsAsDeletedDbRequest
 import org.zotero.android.database.requests.ReadAnnotationsDbRequest
 import org.zotero.android.database.requests.ReadDocumentDataDbRequest
+import org.zotero.android.database.requests.StorePageForItemDbRequest
 import org.zotero.android.database.requests.key
 import org.zotero.android.ktx.annotation
 import org.zotero.android.ktx.baseColor
@@ -624,6 +626,8 @@ class PdfReaderViewModel @Inject constructor(
                     )
                 }
 
+                this.fragment.pageIndex = page
+
                 if (selectedData != null) {
                     val (key, location) = selectedData
                     updateState {
@@ -1591,6 +1595,7 @@ class PdfReaderViewModel @Inject constructor(
             .forEach {
                 this.document.annotationProvider.removeAnnotationFromPage(it)
             }
+        submitPendingPage(fragment.pageIndex)
         super.onCleared()
     }
 
@@ -2531,6 +2536,27 @@ class PdfReaderViewModel @Inject constructor(
         }
     }
 
+    private fun submitPendingPage(page: Int) {
+        store(page = page)
+    }
+
+    private fun store(page: Int) {
+        val request = StorePageForItemDbRequest(
+            key = viewState.key,
+            libraryId = viewState.library.identifier,
+            page = "$page"
+        )
+        ZoteroApplication.instance.applicationScope.launch {
+            perform(
+                dbWrapper = dbWrapper,
+                request = request
+            ).ifFailure {
+                Timber.e(it, "PDFReaderViewModel: can't store page")
+                return@launch
+            }
+        }
+    }
+
 }
 
 data class PdfReaderViewState(

buildSrc/src/main/kotlin/BuildConfig.kt

@@ -4,7 +4,7 @@ object BuildConfig {
     const val compileSdkVersion = 34
     const val targetSdk = 33
 
-    val versionCode = 67 // Must be updated on every build
+    val versionCode = 68 // Must be updated on every build
     val version = Version(
         major = 1,
         minor = 0,