Add Translate and Dictionary options to text selection in ReaderFragment

app/src/main/java/org/cis_india/wsreader/MyneApp.kt

@@ -33,6 +33,7 @@ import dagger.hilt.android.HiltAndroidApp
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.MainScope
 import okhttp3.OkHttpClient
+import org.cis_india.wsreader.api.BookAPI
 import java.io.File
 import java.util.concurrent.TimeUnit
 
@@ -58,6 +59,9 @@ class MyneApp : Application(), ImageLoaderFactory {
     lateinit var bookRepository: BookRepository
         private set
 
+    lateinit var bookApi: BookAPI
+        private set
+
     lateinit var bookshelf: Bookshelf
         private set
 
@@ -81,6 +85,8 @@ class MyneApp : Application(), ImageLoaderFactory {
 
         bookRepository = BookRepository(database.booksDao())
 
+        bookApi = BookAPI(this)
+
         val downloadsDir = File(cacheDir, "downloads")
 
         // Cleans the download dir.
@@ -108,7 +114,8 @@ class MyneApp : Application(), ImageLoaderFactory {
             this@MyneApp,
             readium,
             bookRepository,
-            navigatorPreferences
+            navigatorPreferences,
+            bookApi
         )
     }
 

app/src/main/java/org/cis_india/wsreader/data/BookRepository.kt

@@ -83,7 +83,8 @@ class BookRepository(
         mediaType: MediaType,
         publication: Publication,
         cover: File,
-        wdIdentifier: String? = null
+        wdIdentifier: String? = null,
+        bookLanguageCode: String? = null
     ): Long {
         val book = Book(
             creation = Date().time,
@@ -93,11 +94,19 @@ class BookRepository(
             identifier = wdIdentifier?: publication.metadata.identifier ?: "",
             mediaType = mediaType,
             progression = "{}",
-            cover = cover.path
+            cover = cover.path,
+            languageCode = bookLanguageCode ?: "en"
         )
         return booksDao.insertBook(book)
     }
 
+    suspend fun updateBookLanguage(bookId: Long, languageCode: String) =
+        booksDao.updateBookLanguage(bookId, languageCode)
+
+    fun getBookLanguage(bookId: Long): Flow<String?> {
+        return booksDao.getBookLanguage(bookId)
+    }
+
     suspend fun deleteBook(id: Long) =
         booksDao.deleteBook(id)
 }

app/src/main/java/org/cis_india/wsreader/data/db/AppDatabase.kt

@@ -19,7 +19,7 @@ import org.cis_india.wsreader.data.model.Highlight
 
 @Database(
     entities = [Book::class, Bookmark::class, Highlight::class, Catalog::class],
-    version = 1,
+    version = 2,
     exportSchema = false
 )
 @TypeConverters(
@@ -45,7 +45,9 @@ abstract class AppDatabase : RoomDatabase() {
                     context.applicationContext,
                     AppDatabase::class.java,
                     "database"
-                ).build()
+                )
+                .addMigrations(MIGRATION_1_2)
+                .build()
                 INSTANCE = instance
                 return instance
             }

app/src/main/java/org/cis_india/wsreader/data/db/BooksDao.kt

@@ -123,4 +123,10 @@ interface BooksDao {
         "UPDATE " + Book.TABLE_NAME + " SET " + Book.PROGRESSION + " = :locator WHERE " + Book.ID + "= :id"
     )
     suspend fun saveProgression(locator: String, id: Long)
+
+    @Query("UPDATE " + Book.TABLE_NAME + " SET language_code = :languageCode WHERE " + Book.ID + " = :bookId")
+    suspend fun updateBookLanguage(bookId: Long, languageCode: String)
+
+    @Query("SELECT language_code FROM books WHERE id = :bookId LIMIT 1")
+    fun getBookLanguage(bookId: Long): Flow<String?>
 }

app/src/main/java/org/cis_india/wsreader/data/db/Migrations.kt

@@ -0,0 +1,11 @@
+package org.cis_india.wsreader.data.db
+
+import androidx.room.migration.Migration
+import androidx.sqlite.db.SupportSQLiteDatabase
+
+val MIGRATION_1_2 = object : Migration(1, 2) {
+    override fun migrate(database: SupportSQLiteDatabase) {
+        // Add the new column language_code with default value
+        database.execSQL("ALTER TABLE books ADD COLUMN language_code TEXT NOT NULL DEFAULT 'auto'")
+    }
+}

app/src/main/java/org/cis_india/wsreader/data/model/Book.kt

@@ -35,6 +35,8 @@ data class Book(
     val rawMediaType: String,
     @ColumnInfo(name = COVER)
     val cover: String,
+    @ColumnInfo(name = LANGUAGE_CODE)
+    val languageCode: String
 ) {
 
     constructor(
@@ -47,6 +49,7 @@ data class Book(
         progression: String? = null,
         mediaType: MediaType,
         cover: String,
+        languageCode: String,
     ) : this(
         id = id,
         creation = creation,
@@ -56,7 +59,8 @@ data class Book(
         identifier = identifier,
         progression = progression,
         rawMediaType = mediaType.toString(),
-        cover = cover
+        cover = cover,
+        languageCode = languageCode
     )
 
     val url: AbsoluteUrl get() = AbsoluteUrl(href)!!
@@ -81,5 +85,6 @@ data class Book(
         const val PROGRESSION = "progression"
         const val MEDIA_TYPE = "media_type"
         const val COVER = "cover"
+        const val LANGUAGE_CODE = "language_code"
     }
 }

app/src/main/java/org/cis_india/wsreader/domain/Bookshelf.kt

@@ -52,10 +52,11 @@ class Bookshelf(
 
     fun importPublicationFromStorage(
         uri: Uri,
-        wdIdentifier: String? = null
+        wdIdentifier: String? = null,
+        bookLanguageCode: String? = null
     ) {
         coroutineScope.launch {
-            addBookFeedback(publicationRetriever.retrieveFromStorage(uri),wdIdentifier)
+            addBookFeedback(publicationRetriever.retrieveFromStorage(uri),wdIdentifier, bookLanguageCode)
         }
     }
 
@@ -93,10 +94,11 @@ class Bookshelf(
 
     private suspend fun addBookFeedback(
         retrieverResult: Try<PublicationRetriever.Result, ImportError>,
-        wdIdentifier: String? = null
+        wdIdentifier: String? = null,
+        bookLanguageCode: String? = null
     ) {
         retrieverResult
-            .map { addBook(it.publication.toUrl(), it.format, it.coverUrl, wdIdentifier) }
+            .map { addBook(it.publication.toUrl(), it.format, it.coverUrl, wdIdentifier, bookLanguageCode) }
             .onSuccess { channel.send(Event.ImportPublicationSuccess) }
             .onFailure { channel.send(Event.ImportPublicationError(it)) }
     }
@@ -116,7 +118,8 @@ class Bookshelf(
         url: AbsoluteUrl,
         format: Format? = null,
         coverUrl: AbsoluteUrl? = null,
-        wdIdentifier: String? = null
+        wdIdentifier: String? = null,
+        bookLanguageCode: String? = null
     ): Try<Unit, ImportError> {
         val asset =
             if (format == null) {
@@ -148,7 +151,8 @@ class Bookshelf(
                 asset.format.mediaType,
                 publication,
                 coverFile,
-                wdIdentifier
+                wdIdentifier,
+                bookLanguageCode,
             )
             if (id == -1L) {
                 coverFile.delete()

app/src/main/java/org/cis_india/wsreader/reader/ReaderRepository.kt

@@ -24,6 +24,7 @@ import org.readium.r2.shared.util.DebugError
 import org.readium.r2.shared.util.Try
 import org.readium.r2.shared.util.getOrElse
 import org.cis_india.wsreader.Readium
+import org.cis_india.wsreader.api.BookAPI
 import org.cis_india.wsreader.data.BookRepository
 import org.cis_india.wsreader.domain.PublicationError
 import org.cis_india.wsreader.reader.preferences.AndroidTtsPreferencesManagerFactory
@@ -46,6 +47,7 @@ class ReaderRepository(
     private val readium: Readium,
     private val bookRepository: BookRepository,
     private val preferencesDataStore: DataStore<JetpackPreferences>,
+    private val bookApi: BookAPI
 ) {
 
     private val coroutineQueue: CoroutineQueue =
@@ -73,6 +75,9 @@ class ReaderRepository(
 
         val book = checkNotNull(bookRepository.get(bookId)) { "Cannot find book in database." }
 
+        //Update book language if not set in books entity in room db
+        updateBookLanguageIfAuto(bookId, book.identifier, book.languageCode)
+
         val asset = readium.assetRetriever.retrieve(
             book.url,
             book.mediaType
@@ -124,6 +129,19 @@ class ReaderRepository(
         }
     }
 
+    private suspend fun updateBookLanguageIfAuto(bookId: Long, identifier: String, currentLang: String) {
+        if(currentLang != "auto") return
+
+        try {
+            val bookSet = bookApi.getBookById(identifier).getOrNull()!!
+            val language = bookSet.books.firstOrNull()?.languages?.firstOrNull()?:"en"
+
+            bookRepository.updateBookLanguage(bookId, language)
+        } catch (e: Exception) {
+
+        }
+    }
+
     private suspend fun openAudio(
         bookId: Long,
         publication: Publication,

app/src/main/java/org/cis_india/wsreader/reader/ReaderViewModel.kt

@@ -125,6 +125,11 @@ class ReaderViewModel(
         bookRepository.deleteBookmark(id)
     }
 
+
+    val bookLanguage: Flow<String> = bookRepository
+        .getBookLanguage(bookId)
+        .map { it ?: "en" }
+
     // Highlights
 
     val highlights: Flow<List<Highlight>> by lazy {