优化

app/src/main/java/io/legado/app/api/controller/BookController.kt

@@ -139,7 +139,7 @@ object BookController {
         val book = GSON.fromJsonObject<Book>(postData)
         val returnData = ReturnData()
         if (book != null) {
-            appDb.bookDao.insert(book)
+            book.save()
             if (ReadBook.book?.bookUrl == book.bookUrl) {
                 ReadBook.book = book
                 ReadBook.durChapterIndex = book.durChapterIndex

app/src/main/java/io/legado/app/data/dao/BookDao.kt

@@ -65,6 +65,9 @@ interface BookDao {
     @get:Query("select max(`order`) from books")
     val maxOrder: Int
 
+    @Query("select 1 from books where bookUrl = :bookUrl")
+    fun has(bookUrl: String): Boolean?
+
     @Insert(onConflict = OnConflictStrategy.REPLACE)
     fun insert(vararg book: Book)
 

app/src/main/java/io/legado/app/data/entities/Book.kt

@@ -240,6 +240,14 @@ data class Book(
         )
     }
 
+    fun save() {
+        if (appDb.bookDao.has(bookUrl) == true) {
+            appDb.bookDao.update(this)
+        } else {
+            appDb.bookDao.insert(this)
+        }
+    }
+
     companion object {
         const val hTag = 2L
         const val rubyTag = 4L

app/src/main/java/io/legado/app/ui/book/info/BookInfoViewModel.kt

@@ -201,7 +201,7 @@ class BookInfoViewModel(application: Application) : BaseViewModel(application) {
                     book.durChapterPos = it.durChapterPos
                     book.durChapterTitle = it.durChapterTitle
                 }
-                appDb.bookDao.insert(book)
+                book.save()
                 if (ReadBook.book?.name == book.name && ReadBook.book?.author == book.author) {
                     ReadBook.book = book
                 }
@@ -231,7 +231,7 @@ class BookInfoViewModel(application: Application) : BaseViewModel(application) {
                     book.durChapterPos = it.durChapterPos
                     book.durChapterTitle = it.durChapterTitle
                 }
-                appDb.bookDao.insert(book)
+                book.save()
             }
             chapterListData.value?.let {
                 appDb.bookChapterDao.insert(*it.toTypedArray())

app/src/main/java/io/legado/app/ui/main/bookshelf/BookshelfViewModel.kt

@@ -49,7 +49,7 @@ class BookshelfViewModel(application: Application) : BaseViewModel(application)
                     WebBook(bookSource).getBookInfo(this, book)
                         .onSuccess(IO) {
                             it.order = appDb.bookDao.maxOrder + 1
-                            appDb.bookDao.insert(it)
+                            it.save()
                             successCount++
                         }.onError {
                             throw Exception(it.localizedMessage)
@@ -120,7 +120,7 @@ class BookshelfViewModel(application: Application) : BaseViewModel(application)
                         if (groupId > 0) {
                             book.group = groupId
                         }
-                        appDb.bookDao.insert(book)
+                        book.save()
                     }
                 }
             }