feat: add cross device sync

app/build.gradle.kts

@@ -248,6 +248,9 @@ dependencies {
     implementation(libs.compose.materialmotion)
     implementation(libs.swipe)
 
+    implementation(libs.google.api.services.drive)
+    implementation(libs.google.api.client.oauth)
+
     // Logging
     implementation(libs.logcat)
 

app/proguard-rules.pro

@@ -126,6 +126,12 @@
 -keep class com.google.firebase.installations.** { *; }
 -keep interface com.google.firebase.installations.** { *; }
 
+# Google Drive
+-keep class com.google.api.services.** { *; }
+
+# Google OAuth
+-keep class com.google.api.client.** { *; }
+
 # SY -->
 # SqlCipher
 -keepclassmembers class net.zetetic.database.sqlcipher.SQLiteCustomFunction { *; }
@@ -260,6 +266,9 @@
  -keep,allowoptimization class * extends uy.kohesive.injekt.api.TypeReference
  -keep,allowoptimization public class io.requery.android.database.sqlite.SQLiteConnection { *; }
 
+ # Keep apache http client
+ -keep class org.apache.http.** { *; }
+
 # Suggested rules
 -dontwarn com.oracle.svm.core.annotate.AutomaticFeature
 -dontwarn com.oracle.svm.core.annotate.Delete
@@ -272,4 +281,16 @@
 -dontwarn org.slf4j.impl.StaticLoggerBinder
 -dontwarn java.lang.Module
 -dontwarn org.graalvm.nativeimage.hosted.RuntimeResourceAccess
--dontwarn org.jspecify.annotations.NullMarked
+-dontwarn org.jspecify.annotations.NullMarked
+-dontwarn javax.naming.InvalidNameException
+-dontwarn javax.naming.NamingException
+-dontwarn javax.naming.directory.Attribute
+-dontwarn javax.naming.directory.Attributes
+-dontwarn javax.naming.ldap.LdapName
+-dontwarn javax.naming.ldap.Rdn
+-dontwarn org.ietf.jgss.GSSContext
+-dontwarn org.ietf.jgss.GSSCredential
+-dontwarn org.ietf.jgss.GSSException
+-dontwarn org.ietf.jgss.GSSManager
+-dontwarn org.ietf.jgss.GSSName
+-dontwarn org.ietf.jgss.Oid

app/src/main/AndroidManifest.xml

@@ -188,6 +188,20 @@
                 <data android:host="shikimori-auth" />
             </intent-filter>
         </activity>
+        <activity
+            android:name=".ui.setting.track.GoogleDriveLoginActivity"
+            android:label="GoogleDrive"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+
+                <data
+                    android:scheme="eu.kanade.google.oauth" />
+            </intent-filter>
+        </activity>
 
         <activity
             android:name="exh.ui.login.EhLoginActivity"

app/src/main/assets/client_secrets.json

@@ -0,0 +1 @@
+{"installed":{"client_id":"1046609911130-tbp79niehhuii976ekep1us06e9a8lne.apps.googleusercontent.com","project_id":"tachiyomi","auth_uri":"https://accounts.google.com/o/oauth2/auth","token_uri":"https://oauth2.googleapis.com/token","auth_provider_x509_cert_url":"https://www.googleapis.com/oauth2/v1/certs"}}

app/src/main/java/eu/kanade/domain/chapter/model/Chapter.kt

@@ -39,4 +39,5 @@ fun Chapter.toDbChapter(): DbChapter = ChapterImpl().also {
     it.date_upload = dateUpload
     it.chapter_number = chapterNumber.toFloat()
     it.source_order = sourceOrder.toInt()
+    it.last_modified = lastModifiedAt
 }

app/src/main/java/eu/kanade/domain/sync/SyncPreferences.kt

@@ -0,0 +1,92 @@
+package eu.kanade.domain.sync
+
+import eu.kanade.domain.sync.models.SyncSettings
+import eu.kanade.tachiyomi.data.sync.models.SyncTriggerOptions
+import tachiyomi.core.common.preference.Preference
+import tachiyomi.core.common.preference.PreferenceStore
+import java.util.UUID
+
+class SyncPreferences(
+    private val preferenceStore: PreferenceStore,
+) {
+    fun clientHost() = preferenceStore.getString("sync_client_host", "https://sync.tachiyomi.org")
+    fun clientAPIKey() = preferenceStore.getString("sync_client_api_key", "")
+    fun lastSyncTimestamp() = preferenceStore.getLong(Preference.appStateKey("last_sync_timestamp"), 0L)
+
+    fun syncInterval() = preferenceStore.getInt("sync_interval", 0)
+    fun syncService() = preferenceStore.getInt("sync_service", 0)
+
+    fun googleDriveAccessToken() = preferenceStore.getString(
+        Preference.appStateKey("google_drive_access_token"),
+        "",
+    )
+
+    fun googleDriveRefreshToken() = preferenceStore.getString(
+        Preference.appStateKey("google_drive_refresh_token"),
+        "",
+    )
+
+    fun uniqueDeviceID(): String {
+        val uniqueIDPreference = preferenceStore.getString("unique_device_id", "")
+
+        // Retrieve the current value of the preference
+        var uniqueID = uniqueIDPreference.get()
+        if (uniqueID.isBlank()) {
+            uniqueID = UUID.randomUUID().toString()
+            uniqueIDPreference.set(uniqueID)
+        }
+
+        return uniqueID
+    }
+
+    fun isSyncEnabled(): Boolean {
+        return syncService().get() != 0
+    }
+
+    fun getSyncSettings(): SyncSettings {
+        return SyncSettings(
+            libraryEntries = preferenceStore.getBoolean("library_entries", true).get(),
+            categories = preferenceStore.getBoolean("categories", true).get(),
+            chapters = preferenceStore.getBoolean("chapters", true).get(),
+            tracking = preferenceStore.getBoolean("tracking", true).get(),
+            history = preferenceStore.getBoolean("history", true).get(),
+            appSettings = preferenceStore.getBoolean("appSettings", true).get(),
+            sourceSettings = preferenceStore.getBoolean("sourceSettings", true).get(),
+            privateSettings = preferenceStore.getBoolean("privateSettings", true).get(),
+        )
+    }
+
+    fun setSyncSettings(syncSettings: SyncSettings) {
+        preferenceStore.getBoolean("library_entries", true).set(syncSettings.libraryEntries)
+        preferenceStore.getBoolean("categories", true).set(syncSettings.categories)
+        preferenceStore.getBoolean("chapters", true).set(syncSettings.chapters)
+        preferenceStore.getBoolean("tracking", true).set(syncSettings.tracking)
+        preferenceStore.getBoolean("history", true).set(syncSettings.history)
+        preferenceStore.getBoolean("appSettings", true).set(syncSettings.appSettings)
+        preferenceStore.getBoolean("sourceSettings", true).set(syncSettings.sourceSettings)
+        preferenceStore.getBoolean("privateSettings", true).set(syncSettings.privateSettings)
+    }
+
+    fun getSyncTriggerOptions(): SyncTriggerOptions {
+        return SyncTriggerOptions(
+            syncOnChapterRead = preferenceStore.getBoolean("sync_on_chapter_read", false).get(),
+            syncOnChapterOpen = preferenceStore.getBoolean("sync_on_chapter_open", false).get(),
+            syncOnAppStart = preferenceStore.getBoolean("sync_on_app_start", false).get(),
+            syncOnAppResume = preferenceStore.getBoolean("sync_on_app_resume", false).get(),
+            syncOnLibraryUpdate = preferenceStore.getBoolean("sync_on_library_update", false).get(),
+        )
+    }
+
+    fun setSyncTriggerOptions(syncTriggerOptions: SyncTriggerOptions) {
+        preferenceStore.getBoolean("sync_on_chapter_read", false)
+            .set(syncTriggerOptions.syncOnChapterRead)
+        preferenceStore.getBoolean("sync_on_chapter_open", false)
+            .set(syncTriggerOptions.syncOnChapterOpen)
+        preferenceStore.getBoolean("sync_on_app_start", false)
+            .set(syncTriggerOptions.syncOnAppStart)
+        preferenceStore.getBoolean("sync_on_app_resume", false)
+            .set(syncTriggerOptions.syncOnAppResume)
+        preferenceStore.getBoolean("sync_on_library_update", false)
+            .set(syncTriggerOptions.syncOnLibraryUpdate)
+    }
+}

app/src/main/java/eu/kanade/domain/sync/models/SyncSettings.kt

@@ -0,0 +1,12 @@
+package eu.kanade.domain.sync.models
+
+data class SyncSettings(
+    val libraryEntries: Boolean = true,
+    val categories: Boolean = true,
+    val chapters: Boolean = true,
+    val tracking: Boolean = true,
+    val history: Boolean = true,
+    val appSettings: Boolean = true,
+    val sourceSettings: Boolean = true,
+    val privateSettings: Boolean = false,
+)

app/src/main/java/eu/kanade/presentation/library/components/LibraryToolbar.kt

@@ -38,6 +38,7 @@ fun LibraryToolbar(
     onClickRefresh: () -> Unit,
     onClickGlobalUpdate: () -> Unit,
     onClickOpenRandomManga: () -> Unit,
+    onClickSyncNow: () -> Unit,
     // SY -->
     onClickSyncExh: (() -> Unit)?,
     // SY <--
@@ -60,6 +61,7 @@ fun LibraryToolbar(
         onClickRefresh = onClickRefresh,
         onClickGlobalUpdate = onClickGlobalUpdate,
         onClickOpenRandomManga = onClickOpenRandomManga,
+        onClickSyncNow = onClickSyncNow,
         // SY -->
         onClickSyncExh = onClickSyncExh,
         // SY <--
@@ -77,6 +79,7 @@ private fun LibraryRegularToolbar(
     onClickRefresh: () -> Unit,
     onClickGlobalUpdate: () -> Unit,
     onClickOpenRandomManga: () -> Unit,
+    onClickSyncNow: () -> Unit,
     // SY -->
     onClickSyncExh: (() -> Unit)?,
     // SY <--
@@ -125,7 +128,10 @@ private fun LibraryRegularToolbar(
                         title = stringResource(MR.strings.action_open_random_manga),
                         onClick = onClickOpenRandomManga,
                     ),
-
+                    AppBar.OverflowAction(
+                        title = stringResource(MR.strings.sync_library),
+                        onClick = onClickSyncNow,
+                    ),
                 ).builder().apply {
                     // SY -->
                     if (onClickSyncExh != null) {

app/src/main/java/eu/kanade/presentation/more/settings/screen/SettingsAdvancedScreen.kt

@@ -60,7 +60,6 @@ import eu.kanade.tachiyomi.util.CrashLogUtil
 import eu.kanade.tachiyomi.util.storage.DiskUtil
 import eu.kanade.tachiyomi.util.system.isDevFlavor
 import eu.kanade.tachiyomi.util.system.isPreviewBuildType
-import eu.kanade.tachiyomi.util.system.isReleaseBuildType
 import eu.kanade.tachiyomi.util.system.isShizukuInstalled
 import eu.kanade.tachiyomi.util.system.powerManager
 import eu.kanade.tachiyomi.util.system.setDefaultSettings