优化

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

@@ -124,6 +124,14 @@ data class Book(
         return readConfig!!
     }
 
+    fun setReverseToc(reverseToc: Boolean) {
+        config().reverseToc = reverseToc
+    }
+
+    fun getReverseToc(): Boolean {
+        return config().reverseToc
+    }
+
     fun setUseReplaceRule(useReplaceRule: Boolean) {
         config().useReplaceRule = useReplaceRule
     }
@@ -156,14 +164,6 @@ data class Book(
         config().imageStyle = imageStyle
     }
 
-    fun getDelParagraph(): Int {
-        return config().delParagraph
-    }
-
-    fun setDelParagraph(num: Int) {
-        config().delParagraph = num
-    }
-
     fun setDelTag(tag: Long) {
         config().delTag =
             if ((config().delTag and tag) == tag) config().delTag and tag.inv() else config().delTag or tag
@@ -208,17 +208,10 @@ data class Book(
         newBook.customTag = customTag
         newBook.canUpdate = canUpdate
         newBook.readConfig = readConfig
-        delete()
+        delete(this)
         appDb.bookDao.insert(newBook)
     }
 
-    fun delete() {
-        if (ReadBook.book?.bookUrl == bookUrl) {
-            ReadBook.book = null
-        }
-        appDb.bookDao.delete(this)
-    }
-
     fun upInfoFromOld(oldBook: Book?) {
         oldBook?.let {
             group = oldBook.group
@@ -241,15 +234,23 @@ data class Book(
         const val imgStyleDefault = "DEFAULT"
         const val imgStyleFull = "FULL"
         const val imgStyleText = "TEXT"
+
+        fun delete(book: Book?) {
+            book ?: return
+            if (ReadBook.book?.bookUrl == book.bookUrl) {
+                ReadBook.book = null
+            }
+            appDb.bookDao.delete(book)
+        }
     }
 
     @Parcelize
     data class ReadConfig(
+        var reverseToc: Boolean = false,
         var pageAnim: Int = -1,
         var reSegment: Boolean = false,
         var imageStyle: String? = null,
         var useReplaceRule: Boolean = AppConfig.replaceEnableDefault,// 正文使用净化替换规则
-        var delParagraph: Int = 0,//去除段首
         var delTag: Long = 0L,//去除标签
     ) : Parcelable
 

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

@@ -235,7 +235,7 @@ class BookInfoViewModel(application: Application) : BaseViewModel(application) {
     fun delBook(deleteOriginal: Boolean = false, success: (() -> Unit)? = null) {
         execute {
             bookData.value?.let {
-                it.delete()
+                Book.delete(it)
                 inBookshelf = false
                 if (it.isLocalBook()) {
                     LocalBook.deleteBook(it, deleteOriginal)

app/src/main/java/io/legado/app/ui/book/read/ReadBookViewModel.kt

@@ -262,7 +262,7 @@ class ReadBookViewModel(application: Application) : BaseViewModel(application) {
 
     fun removeFromBookshelf(success: (() -> Unit)?) {
         execute {
-            ReadBook.book?.delete()
+            Book.delete(ReadBook.book)
         }.onSuccess {
             success?.invoke()
         }

app/src/main/java/io/legado/app/ui/book/toc/TocViewModel.kt

@@ -24,12 +24,15 @@ class TocViewModel(application: Application) : BaseViewModel(application) {
 
     fun reverseToc() {
         execute {
-            val toc = appDb.bookChapterDao.getChapterList(bookUrl)
+            bookData.value?.let {
-            val newToc = toc.reversed()
+                it.setReverseToc(it.getReverseToc())
-            newToc.forEachIndexed { index, bookChapter ->
+                val toc = appDb.bookChapterDao.getChapterList(bookUrl)
-                bookChapter.index = index
+                val newToc = toc.reversed()
+                newToc.forEachIndexed { index, bookChapter ->
+                    bookChapter.index = index
+                }
+                appDb.bookChapterDao.insert(*newToc.toTypedArray())
             }
-            appDb.bookChapterDao.insert(*newToc.toTypedArray())
         }
     }