feat: 优化代码

app/src/main/java/io/legado/app/model/localBook/AnalyzeTxtFile.kt

@@ -20,7 +20,7 @@ object AnalyzeTxtFile {
     private const val BUFFER_SIZE = 512 * 1024
     //没有标题的时候，每个章节的最大长度
     private const val MAX_LENGTH_WITH_NO_CHAPTER = 10 * 1024
-    private val cacheFolder: File by lazy {
+    val cacheFolder: File by lazy {
         val rootFile = App.INSTANCE.getExternalFilesDir(null)
             ?: App.INSTANCE.externalCacheDir
             ?: App.INSTANCE.cacheDir

app/src/main/java/io/legado/app/model/localBook/LocalBook.kt

@@ -1,8 +1,10 @@
 package io.legado.app.model.localBook
 
+import android.net.Uri
 import androidx.documentfile.provider.DocumentFile
 import io.legado.app.App
 import io.legado.app.data.entities.Book
+import io.legado.app.utils.FileUtils
 
 
 object LocalBook {
@@ -27,4 +29,16 @@ object LocalBook {
         }
     }
 
+    fun deleteBook(book: Book, deleteOriginal: Boolean) {
+        if (book.isTxt()) {
+            val bookFile =
+                FileUtils.getFile(AnalyzeTxtFile.cacheFolder, book.originName, subDirs = *arrayOf())
+            bookFile.delete()
+        }
+
+        if (deleteOriginal) {
+            val uri = Uri.parse(book.bookUrl)
+            DocumentFile.fromSingleUri(App.INSTANCE, uri)?.delete()
+        }
+    }
 }

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

@@ -20,6 +20,9 @@ import io.legado.app.data.entities.BookChapter
 import io.legado.app.help.BlurTransformation
 import io.legado.app.help.ImageLoader
 import io.legado.app.help.IntentDataHelp
+import io.legado.app.lib.dialogs.alert
+import io.legado.app.lib.dialogs.noButton
+import io.legado.app.lib.dialogs.okButton
 import io.legado.app.ui.audio.AudioPlayActivity
 import io.legado.app.ui.book.group.GroupSelectDialog
 import io.legado.app.ui.book.info.edit.BookInfoEditActivity
@@ -186,9 +189,7 @@ class BookInfoActivity :
         }
         tv_shelf.onClick {
             if (viewModel.inBookshelf) {
-                viewModel.delBook {
-                    upTvBookshelf()
-                }
+                deleteBook()
             } else {
                 viewModel.addToBookshelf {
                     upTvBookshelf()
@@ -223,6 +224,32 @@ class BookInfoActivity :
         }
     }
 
+    private fun deleteBook() {
+        viewModel.bookData.value?.let {
+            if (it.isLocalBook()) {
+                alert(
+                    titleResource = R.string.sure,
+                    messageResource = R.string.sure_delete_book_file
+                ) {
+                    okButton {
+                        viewModel.delBook(true) {
+                            finish()
+                        }
+                    }
+                    noButton {
+                        viewModel.delBook(false) {
+                            finish()
+                        }
+                    }
+                }
+            } else {
+                viewModel.delBook {
+                    upTvBookshelf()
+                }
+            }
+        }
+    }
+
     private fun openChapterList() {
         if (viewModel.chapterListData.value.isNullOrEmpty()) {
             toast(R.string.chapter_list_empty)
@@ -320,7 +347,7 @@ class BookInfoActivity :
                 }
             } else {
                 if (!viewModel.inBookshelf) {
-                    viewModel.delBook(null)
+                    viewModel.delBook()
                 }
             }
         }

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

@@ -11,6 +11,7 @@ import io.legado.app.data.entities.BookChapter
 import io.legado.app.help.BookHelp
 import io.legado.app.model.WebBook
 import io.legado.app.model.localBook.AnalyzeTxtFile
+import io.legado.app.model.localBook.LocalBook
 import kotlinx.coroutines.Dispatchers.IO
 
 class BookInfoViewModel(application: Application) : BaseViewModel(application) {
@@ -198,9 +199,12 @@ class BookInfoViewModel(application: Application) : BaseViewModel(application) {
         }
     }
 
-    fun delBook(success: (() -> Unit)?) {
+    fun delBook(deleteOriginal: Boolean = false, success: (() -> Unit)? = null) {
         execute {
             bookData.value?.let {
+                if (it.isLocalBook()) {
+                    LocalBook.deleteBook(it, deleteOriginal)
+                }
                 App.db.bookDao().delete(it)
             }
             inBookshelf = false

app/src/main/res/values/strings.xml

@@ -630,4 +630,5 @@
     <string name="plus">加</string>
     <string name="other_aloud_setting">其它朗读设置</string>
     <string name="system_typeface">系统内置字体样式</string>
+    <string name="sure_delete_book_file">是否删除源文件</string>
 </resources>