From 640aa297303a5dafc4643b5426a3ab3bf4dc75e4 Mon Sep 17 00:00:00 2001
From: hoodie13 <74173949+hoodie13@users.noreply.github.com>
Date: Sat, 6 Mar 2021 20:51:48 +0800
Subject: [PATCH] =?UTF-8?q?epub=E4=B9=A6=E7=B1=8D=E5=A2=9E=E5=8A=A0cache?=
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有些epub书籍一本书只使用了一个html，加载将近10S，做成与网文一样存到本地cache，加速2次加载时间
---
 .../main/java/io/legado/app/help/BookHelp.kt  | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

diff --git a/app/src/main/java/io/legado/app/help/BookHelp.kt b/app/src/main/java/io/legado/app/help/BookHelp.kt
index 803d11a9a..69ea5ff42 100644
--- a/app/src/main/java/io/legado/app/help/BookHelp.kt
+++ b/app/src/main/java/io/legado/app/help/BookHelp.kt
@@ -148,7 +148,7 @@ object BookHelp {
 
     fun getChapterFiles(book: Book): List<String> {
         val fileNameList = arrayListOf<String>()
-        if (book.isLocalBook()) {
+        if (book.isLocalTxt()) {
             return fileNameList
         }
         FileUtils.createFolderIfNotExist(
@@ -162,7 +162,7 @@ object BookHelp {
 
     // 检测该章节是否下载
     fun hasContent(book: Book, bookChapter: BookChapter): Boolean {
-        return if (book.isLocalBook()) {
+        return if (book.isLocalTxt()) {
             true
         } else {
             FileUtils.exists(
@@ -175,8 +175,19 @@ object BookHelp {
     }
 
     fun getContent(book: Book, bookChapter: BookChapter): String? {
-        if (book.isLocalBook()) {
+        if (book.isLocalTxt()) {
             return LocalBook.getContext(book, bookChapter)
+        } else if (book.isEpub() && !hasContent(book, bookChapter)) {
+            val string = LocalBook.getContext(book, bookChapter)
+            string?.let {
+                FileUtils.createFileIfNotExist(
+                    downloadDir,
+                    cacheFolderName,
+                    book.getFolderName(),
+                    bookChapter.getFileName(),
+                ).writeText(it)
+            }
+            return string
         } else {
             val file = FileUtils.getFile(
                 downloadDir,
@@ -211,7 +222,7 @@ object BookHelp {
     }
 
     fun delContent(book: Book, bookChapter: BookChapter) {
-        if (book.isLocalBook()) {
+        if (book.isLocalTxt()) {
             return
         } else {
             FileUtils.createFileIfNotExist(