microblog.pub/app/utils/indieauth.py

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from dataclasses import dataclass
from typing import Any
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from urllib.parse import urlparse
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from app.utils import microformats
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from app.utils.url import make_abs
@dataclass
class IndieAuthClient:
logo: str | None
name: str
url: str
def _get_prop(props: dict[str, Any], name: str, default=None) -> Any:
if name in props:
items = props.get(name)
if isinstance(items, list):
return items[0]
return items
return default
async def get_client_id_data(url: str) -> IndieAuthClient | None:
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# Don't fetch localhost URL
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if urlparse(url).hostname == "localhost":
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return IndieAuthClient(
logo=None,
name=url,
url=url,
)
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maybe_data_and_html = await microformats.fetch_and_parse(url)
if maybe_data_and_html is not None:
data: dict[str, Any] = maybe_data_and_html[0]
for item in data["items"]:
if "h-x-app" in item["type"] or "h-app" in item["type"]:
props = item.get("properties", {})
print(props)
logo = _get_prop(props, "logo")
return IndieAuthClient(
logo=make_abs(logo, url) if logo else None,
name=_get_prop(props, "name"),
url=_get_prop(props, "url", url),
)
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return IndieAuthClient(
logo=None,
name=url,
url=url,
)