49 lines
1.8 KiB
Python
49 lines
1.8 KiB
Python
#!/usr/bin/env python3
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import logging
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from typing import Optional
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import requests
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from praw.models import Submission
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from bdfr.exceptions import SiteDownloaderError
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from bdfr.resource import Resource
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from bdfr.site_authenticator import SiteAuthenticator
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from bdfr.site_downloaders.base_downloader import BaseDownloader
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logger = logging.getLogger(__name__)
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class Gallery(BaseDownloader):
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def __init__(self, post: Submission):
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super().__init__(post)
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def find_resources(self, authenticator: Optional[SiteAuthenticator] = None) -> list[Resource]:
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try:
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image_urls = self._get_links(self.post.gallery_data['items'])
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except (AttributeError, TypeError):
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try:
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image_urls = self._get_links(self.post.crosspost_parent_list[0]['gallery_data']['items'])
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except (AttributeError, IndexError, TypeError, KeyError):
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logger.error(f'Could not find gallery data in submission {self.post.id}')
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logger.exception('Gallery image find failure')
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raise SiteDownloaderError('No images found in Reddit gallery')
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if not image_urls:
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raise SiteDownloaderError('No images found in Reddit gallery')
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return [Resource(self.post, url, Resource.retry_download(url)) for url in image_urls]
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@ staticmethod
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def _get_links(id_dict: list[dict]) -> list[str]:
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out = []
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for item in id_dict:
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image_id = item['media_id']
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possible_extensions = ('.jpg', '.png', '.gif', '.gifv', '.jpeg')
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for extension in possible_extensions:
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test_url = f'https://i.redd.it/{image_id}{extension}'
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response = requests.head(test_url)
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if response.status_code == 200:
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out.append(test_url)
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break
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return out
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