---
cover = head/meta[@property="og:image"]/@content [0]
***ID*** = re.search(r'knigavuhe.org/2/covers/(\d+)/', cover)

---
pagetitle = //div[@class="page_title"]/h1 [0]

#booktitle = //span[@class="book_title_elem book_title_name"] [0].text_content()
booktitle = //span[@itemprop="name"] [0].text_content()

bookauthor = //span[@itemprop="author"]/a [0].text_content()

---
cover = //div[@class="book_cover_wrap"]/div[@class="book_cover"]/img/@src [0]

#description = //div[@class="book_description"] [0].text_content()
description = //div[@itemprop="description"] [0].text_content()

---
lst = //div[@class="gm-scroll-view"]/div[@class="book_playlist_item"]
for i in lst:
***PART*** = /div[@class="book_playlist_item_name --text-overflow"] [0].text_content()

---
https://s10.knigavuhe.org/3/audio/***ID***/***PART***.mp3

---
POST https://knigavuhe.org/play/id/20977/progress/
trackIndex: 3 (part number in a playlist, from 0)
position: 1074.834395 (can be integer or float, from the beginning of part, in seconds)
speed: 1 (can be integer or float, from 0.5 to 3)
JSON response:
0: "flood" /* = pause */ or null /* = playing */
1: null /* = pause */ or 1 /* = playing */