[ BUG ] no webp support, includes fix

[KawaiiUser-chan]

Describe the Bug

Can't download webp images

---

Steps To Reproduce

try to get images from #538703

System Information

OS Name	Build No.	Python Version	App Version
REDACTED	REDACTED	REDACTED	REDACTED

Error message & warnings

  File "d:\prg\saveArt\server\hentai.py", line 788, in image_urls
    return [image.url for image in self.pages]
                                   ^^^^^^^^^^
  File "d:\prg\saveArt\server\hentai.py", line 781, in pages
    return [Page(image_url(num + 1), Extension.convert(_['t']), _['w'], _['h']) for num, _ in enumerate(pages)]
                 ^^^^^^^^^^^^^^^^^^
  File "d:\prg\saveArt\server\hentai.py", line 780, in <lambda>
    image_url = lambda num: f"https://i.nhentai.net/galleries/{self.media_id}/{num}{extension(num-1)}"
                                                                                    ^^^^^^^^^^^^^^^^
  File "d:\prg\saveArt\server\hentai.py", line 779, in <lambda>
    extension = lambda num: Extension.convert(pages[num]['t'])
                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "d:\prg\saveArt\server\hentai.py", line 401, in convert
    return f".{cls(key).name.lower()}"
               ^^^^^^^^
  File "C:\Python312\Lib\enum.py", line 757, in __call__
    return cls.__new__(cls, value)
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Python312\Lib\enum.py", line 1171, in __new__
    raise ve_exc
ValueError: 'w' is not a valid Extension

Code samples

    for u in doujin.image_urls:
        nh_img_url.append(u)

Expected behavior

Images download like usual with jpg, png formats

Additional context

Just add WEBP = 'w' to line 385 like this:

@unique
class Extension(Enum):
"""
Known file extensions used by nhentai images.
"""
JPG = 'j'
PNG = 'p'
GIF = 'g'
WEBP = 'w'

...

[hentai-chan]

I will be getting to it soon

[xinmans]

same issue，when to fix？ any workaround solution?

[hentai-chan]

I will continue working on this project this weekend, I also wanted to clean up some of the code and maybe modernize the packaging with uv. The unit test need also some major rewriting, because the reference doijin (177013) is no longer available on nhentai, which prompted me to rethink the testing methodology in this project. It's no big deal, but that also throws away all prospects of a quick fix for this particular issues.

[xinmans]

538703

Have Just add WEBP = 'w' to line 385 ,but download failure.

test.py

from hentai import Utils, Sort, Option, Tag
from pathlib import Path

# store custom meta data as JSON file to disk
popular_group = Utils.search_by_query('chinese', sort=Sort.PopularWeek)
custom = [Option.ID, Option.Title, Option.Language]
g_json = Utils.export(popular_group, filename=Path('popular_group.json'), options=custom)

print(g_json)
#for id, title in g_json:
Utils.download(doujins=popular_group, delay=0.5, progressbar=True, zip_dir="./test”)

Download #548097:   0%|                                                                               | 0/53 [00:14<?, ?page/s]
#<built-in function id>: 404 Client Error: Not Found for url: https://i.nhentai.net/galleries/3183333/1.webp
Download #547844:   0%|   

[xinmans]

Maybe will work when id <=53xxxxx, can’t work when id >=54xxxxxx

X@ubuntu-play:~/mydev/lanraragi$ hentai download --id 548655
Download #548655:   0%|                                                                               | 0/60 [00:00<?, ?page/s]
#<built-in function id>: 404 Client Error: Not Found for url: https://i.nhentai.net/galleries/3186567/1.jpg
X@ubuntu-play:~/mydev/lanraragi$ hentai download --id 548656
Download #548656:   0%|                                                                               | 0/28 [00:01<?, ?page/s]
#<built-in function id>: 404 Client Error: Not Found for url: https://i.nhentai.net/galleries/3186571/1.webp
X@ubuntu-play:~/mydev/lanraragi$ hentai download --id 549033
Download #549033:   0%|                                                                               | 0/39 [00:00<?, ?page/s]
#<built-in function id>: 404 Client Error: Not Found for url: https://i.nhentai.net/galleries/3188806/1.webp
X@ubuntu-play:~/mydev/lanraragi$ hentai download --id 519033
Download #519033:   3%|○                                                                     | 5/199 [00:08<05:16,  1.63s/page]Download #519033:   3%|○                                                                     | 5/199 [00:32<20:46,  6.43s/page]

[ExyXyz]

i've tried to change the url
from
https://i.nhentai.net/galleries/3188806/1.webp

to
https://i2.nhentai.net/galleries/3188806/1.webp

and its working
just change line 779
from
https://i.nhentai.net/galleries/

to
https://i2.nhentai.net/galleries/

try it maybe it will work for you

[xinmans]

thanks，that's can work