24 lines
850 B
Python
24 lines
850 B
Python
from django.core.cache import cache
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from django.template.defaultfilters import truncatewords
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from judge.jinja2.markdown import markdown
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from judge.jinja2.reference import reference
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def generate_opengraph(cache_key, data):
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metadata = cache.get(cache_key)
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if metadata is None:
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description = None
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tree = reference(markdown(data)).tree
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for p in tree.iterfind(".//p"):
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text = p.text_content().strip()
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if text:
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description = text
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break
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if description:
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for remove in (r"\[", r"\]", r"\(", r"\)"):
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description = description.replace(remove, "")
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img = tree.xpath(".//img")
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metadata = truncatewords(description, 60), img[0].get("src") if img else None
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cache.set(cache_key, metadata, 86400)
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return metadata
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