88 lines
3.3 KiB
Python
88 lines
3.3 KiB
Python
#!/usr/bin/env python3
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import json
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import re
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from typing import Optional
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import requests
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from cachetools import TTLCache, cached
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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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class Redgifs(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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media_urls = self._get_link(self.post.url)
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return [Resource(self.post, m, Resource.retry_download(m), None) for m in media_urls]
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@staticmethod
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@cached(cache=TTLCache(maxsize=5, ttl=82080))
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def _get_auth_token() -> str:
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token = json.loads(Redgifs.retrieve_url("https://api.redgifs.com/v2/auth/temporary").text)["token"]
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return token
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@staticmethod
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def _get_id(url: str) -> str:
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try:
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if url.endswith("/"):
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url = url.removesuffix("/")
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redgif_id = re.match(r".*/(.*?)(?:#.*|\?.*|\..{0,})?$", url).group(1).lower()
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if redgif_id.endswith("-mobile"):
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redgif_id = redgif_id.removesuffix("-mobile")
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except AttributeError:
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raise SiteDownloaderError(f"Could not extract Redgifs ID from {url}")
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return redgif_id
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@staticmethod
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def _get_link(url: str) -> set[str]:
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redgif_id = Redgifs._get_id(url)
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auth_token = Redgifs._get_auth_token()
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if not auth_token:
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raise SiteDownloaderError("Unable to retrieve Redgifs API token")
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headers = {
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"referer": "https://www.redgifs.com/",
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"origin": "https://www.redgifs.com",
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"content-type": "application/json",
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"Authorization": f"Bearer {auth_token}",
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}
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content = Redgifs.retrieve_url(f"https://api.redgifs.com/v2/gifs/{redgif_id}", headers=headers)
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if content is None:
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raise SiteDownloaderError("Could not read the page source")
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try:
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response_json = json.loads(content.text)
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except json.JSONDecodeError as e:
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raise SiteDownloaderError(f"Received data was not valid JSON: {e}")
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out = set()
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try:
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if response_json["gif"]["type"] == 1: # type 1 is a video
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if requests.head(response_json["gif"]["urls"]["hd"], headers=headers, timeout=10).ok:
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out.add(response_json["gif"]["urls"]["hd"])
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else:
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out.add(response_json["gif"]["urls"]["sd"])
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elif response_json["gif"]["type"] == 2: # type 2 is an image
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if response_json["gif"]["gallery"]:
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content = Redgifs.retrieve_url(
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f'https://api.redgifs.com/v2/gallery/{response_json["gif"]["gallery"]}'
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)
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response_json = json.loads(content.text)
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out = {p["urls"]["hd"] for p in response_json["gifs"]}
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else:
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out.add(response_json["gif"]["urls"]["hd"])
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else:
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raise KeyError
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except (KeyError, AttributeError):
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raise SiteDownloaderError("Failed to find JSON data in page")
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return out
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