102 lines
3.0 KiB
Python
102 lines
3.0 KiB
Python
import traceback
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import json
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import requests
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import traceback
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import json
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import feedparser
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import requests
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import logging
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from datetime import datetime
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from time import mktime
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from typing import Annotated
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from fastapi import Depends, APIRouter
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from settings.defaults import Settings, get_settings
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router = APIRouter()
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logger = logging.getLogger(__name__)
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@router.get("/hn", summary="Hacker News RSS")
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async def update(settings: Annotated[Settings, Depends(get_settings)]):
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feed_url = settings.feeds['hn']['url']
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mastodon_server = settings.mastodon_server
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mastodon_aid = settings.feeds['hn']['account_id']
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mastodon_token = str(settings.feeds['hn']['token'])
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mastodon_get_statuses_url=f'{mastodon_server}/api/v1/accounts/{mastodon_aid}/statuses'
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mastodon_post_statuses_url=f'{mastodon_server}/api/v1/statuses'
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try:
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last_status_timestamp=datetime.fromisoformat(load_last_status(mastodon_get_statuses_url, mastodon_token)['created_at'])
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new_entries=load_feed_rss(feed_url, last_status_timestamp)
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logger.info(f'Found {len(new_entries)} new entries since {last_status_timestamp}')
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if (len(new_entries) == 0):
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return {
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"status": 200,
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"body": {
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"posted_entries": 0,
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"successful": True
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}
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}
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posted_entries=list(map(lambda x: post_rss_entry_to_mastodon(mastodon_post_statuses_url, mastodon_token, x), new_entries))
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return {
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"status": 200,
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"body": {
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"posted_entries": len(posted_entries),
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"successful": True
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}
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}
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except Exception:
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return {
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"status": 501,
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"body": {
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"posted_entries": 0,
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"message": ''.join(traceback.format_exception_only()),
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"successful": False
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}
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}
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def load_last_status(url, token):
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response=requests.get(url + '?limit=1', headers={ 'Authorization' : f'Bearer {token}' })
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if response.status_code != 200:
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raise Exception('Failed to contact Mastodon', response.text)
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return json.loads(response.text)[0]
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def post_rss_entry_to_mastodon(url, token, entry):
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title = entry.title
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link = entry.link
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message = f"{title}\n\n{link}"
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headers = {
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'Authorization': f'Bearer {token}',
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'Content-type': 'application/x-www-form-urlencoded',
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'User-Agent': 'Serverless Feed'
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}
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params = {
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'status': message,
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'language': 'en',
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'visibility': 'public'
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}
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logger.info('posting to', url)
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response = requests.post(url, data=params, headers=headers)
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if response.status_code != 200:
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logger.error('Failed to post message', response)
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return response
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def load_feed_rss(url, since):
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feed=feedparser.parse(url)
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return [entry for entry in feed.entries if datetime.fromtimestamp(mktime(entry.published_parsed)) > since.replace(tzinfo=datetime.fromtimestamp(mktime(entry.published_parsed)).tzinfo)]
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