fix font error

.vscode/launch.json

@@ -2,12 +2,20 @@
   "version": "0.2.0",
   "configurations": [
     {
-      "name": "Debug download volume",
+      "name": "volume",
       "type": "go",
       "request": "launch",
       "mode": "auto",
       "program": "${workspaceFolder}",
       "args": ["download", "volume", "-n", "2013", "-v", "165880"]
+    },
+    {
+      "name": "novel",
+      "type": "go",
+      "request": "launch",
+      "mode": "auto",
+      "program": "${workspaceFolder}",
+      "args": ["download", "novel", "-n", "4325"]
     }
   ]
 }

downloader/bilinovel/bilinovel.go

@@ -413,7 +413,9 @@ func downloadChapterByPage(page, chapterIdx int, chapter *model.Chapter, outputP
 	content.Find(".cgo").Remove()
 	content.Find("center").Remove()
 	content.Find(".google-auto-placed").Remove()
-	content.Find("p").Last().AddClass("read-font")
+	if strings.Contains(resp.String(), `font-family: "read"`) {
+		content.Find("p").Last().AddClass("read-font")
+	}
 
 	content.Find("img").Each(func(i int, s *goquery.Selection) {
 		if err != nil {
@@ -427,15 +429,12 @@ func downloadChapterByPage(page, chapterIdx int, chapter *model.Chapter, outputP
 			}
 		}
 
-		fileName := filepath.Join(imgSavePath, fmt.Sprintf("%03v%s", i+1, path.Ext(imgUrl)))
+		fileName := filepath.Join(imgSavePath, fmt.Sprintf("%03v%s", len(chapter.ImageFullPaths)+1, path.Ext(imgUrl)))
 		err = DownloadImg(imgUrl, filepath.Join(outputPath, fileName))
 		if err == nil {
 			s.SetAttr("src", "../"+strings.TrimPrefix(fileName, "OEBPS/"))
 			s.RemoveAttr("class")
 			s.RemoveAttr("data-src")
-			if s.AttrOr("alt", "") == "" {
-				s.SetAttr("alt", fmt.Sprintf("image-%03d", i+1))
-			}
 			chapter.ImageFullPaths = append(chapter.ImageFullPaths, filepath.Join(outputPath, fileName))
 			chapter.ImageOEBPSPaths = append(chapter.ImageOEBPSPaths, strings.TrimPrefix(fileName, "OEBPS/"))
 		}