优化导入功能

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

@@ -78,7 +78,7 @@ object BookshelfController {
         val book = GSON.fromJsonObject<Book>(postData)
         val returnData = ReturnData()
         if (book != null) {
-            App.db.bookDao().insert(book)
+            App.db.bookDao().update(book)
             if (ReadBook.book?.bookUrl == book.bookUrl) {
                 ReadBook.book = book
                 ReadBook.durChapterIndex = book.durChapterIndex

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

@@ -161,7 +161,7 @@ class BookInfoViewModel(application: Application) : BaseViewModel(application) {
             )
             book.durChapterTitle = chapters[book.durChapterIndex].title
             if (inBookshelf) {
-                App.db.bookDao().insert(book)
+                App.db.bookDao().update(book)
                 App.db.bookChapterDao().insert(*chapters.toTypedArray())
             }
             bookData.postValue(book)
@@ -179,7 +179,11 @@ class BookInfoViewModel(application: Application) : BaseViewModel(application) {
                     book.durChapterPos = it.durChapterPos
                     book.durChapterTitle = it.durChapterTitle
                 }
+                if (App.db.bookDao().getBook(book.bookUrl) != null) {
+                    App.db.bookDao().update(book)
+                } else {
                     App.db.bookDao().insert(book)
+                }
                 if (ReadBook.book?.name == book.name && ReadBook.book?.author == book.author) {
                     ReadBook.book = book
                 }