优化

app/src/main/java/io/legado/app/data/AppDatabase.kt

@@ -20,7 +20,7 @@ val appDb by lazy {
 }
 
 @Database(
-    version = 55,
+    version = 56,
     exportSchema = true,
     entities = [Book::class, BookGroup::class, BookSource::class, BookChapter::class,
         ReplaceRule::class, SearchBook::class, SearchKeyword::class, Cookie::class,
@@ -39,7 +39,8 @@ val appDb by lazy {
         AutoMigration(from = 51, to = 52),
         AutoMigration(from = 52, to = 53),
         AutoMigration(from = 53, to = 54),
-        AutoMigration(from = 54, to = 55, spec = DatabaseMigrations.Migration_44_45::class)
+        AutoMigration(from = 54, to = 55, spec = DatabaseMigrations.Migration_54_55::class),
+        AutoMigration(from = 55, to = 56),
     ]
 )
 abstract class AppDatabase : RoomDatabase() {

app/src/main/java/io/legado/app/data/DatabaseMigrations.kt

@@ -325,7 +325,7 @@ object DatabaseMigrations {
 
 
     @Suppress("ClassName")
-    class Migration_44_45 : AutoMigrationSpec {
+    class Migration_54_55 : AutoMigrationSpec {
 
         override fun onPostMigrate(db: SupportSQLiteDatabase) {
             db.execSQL(

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

@@ -64,8 +64,8 @@ data class Book(
     // 自定义字符集名称(仅适用于本地书籍)
     var charset: String? = null,
     // 类型,详见BookType
-    @ColumnInfo(defaultValue = "1")
-    var type: Int = 0,
+    @ColumnInfo(defaultValue = "0")
+    var type: Int = BookType.text,
     // 自定义分组索引号
     @ColumnInfo(defaultValue = "0")
     var group: Long = 0,

app/src/main/java/io/legado/app/help/BookExtensions.kt

@@ -18,6 +18,9 @@ val Book.isImage: Boolean
 
 val Book.isLocal: Boolean
     get() {
+        if (type == 0) {
+            return origin == BookType.localTag || origin.startsWith(BookType.webDavTag)
+        }
         return type and BookType.local > 0
     }