bridgy-fed/render.py

45 wiersze
1.5 KiB
Python
Czysty Zwykły widok Historia

# coding=utf-8
"""Renders mf2 proxy pages based on stored Activity entities."""
import datetime
from flask import request
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from granary import as2, atom, microformats2
from oauth_dropins.webutil import flask_util
from oauth_dropins.webutil.flask_util import error
from oauth_dropins.webutil.util import json_loads
from app import app, cache
import common
from models import Activity
CACHE_TIME = datetime.timedelta(minutes=15)
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@app.get('/render')
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@flask_util.cached(cache, CACHE_TIME)
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def render():
"""Fetches a stored Activity and renders it as HTML."""
source = flask_util.get_required_param('source')
target = flask_util.get_required_param('target')
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id = f'{source} {target}'
activity = Activity.get_by_id(id)
if not activity:
error(f'No stored activity for {id}', status=404)
if activity.source_mf2:
as1 = microformats2.json_to_object(json_loads(activity.source_mf2))
elif activity.source_as2:
as1 = as2.to_as1(json_loads(activity.source_as2))
elif activity.source_atom:
as1 = atom.atom_to_activity(activity.source_atom)
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else:
error(f'Stored activity for {id} has no data', status=404)
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# add HTML meta redirect to source page. should trigger for end users in
# browsers but not for webmention receivers (hopefully).
html = microformats2.activities_to_html([as1])
utf8 = '<meta charset="utf-8">'
refresh = f'<meta http-equiv="refresh" content="0;url={source}">'
return html.replace(utf8, utf8 + '\n' + refresh)