bot: Add a little script to post about recent development activity from a handful of RSS feeds I've gathered.

tools/buttfeed.py

@@ -0,0 +1,55 @@
+#!/usr/bin/env python3
+
+import argparse
+import feedparser
+import json
+import time
+
+parser = argparse.ArgumentParser()
+parser.add_argument('--state_file', help = 'Path to a file in which to store state.')
+args = parser.parse_args()
+
+k_feeds = {
+    'tildefriends': 'https://dev.tildefriends.net/cory/tildefriends.rss',
+    'erlbutt': 'https://github.com/cmoid/erlbutt/commits/main.atom',
+    'habitat': 'https://gitlab.com/quickdudley/habitat/-/commits/main.atom',
+    'habitat': 'https://gitlab.com/quickdudley/habitat/-/commits/internet.atom',
+    'manyverse': 'https://gitlab.com/staltz/manyverse/-/commits/master?format=atom',
+    'ahau': 'https://gitlab.com/ahau/ahau/-/commits/master.atom',
+}
+
+def fix_title(entry):
+    if entry.summary.startswith('<a href=') and '\n' in entry.summary and entry.summary and '\n' in entry.summary:
+        return entry.summary.split('\n')[1]
+    return entry.title.split('\n')[0]
+
+def get_entries():
+    results = []
+    for name, url in k_feeds.items():
+        feed = feedparser.parse(url)
+        for entry in feed.entries:
+            results.append((time.mktime(entry.get('updated_parsed')), name, entry.link, fix_title(entry)))
+    results.sort()
+    results.reverse()
+    return results
+
+state = {}
+if args.state_file:
+    try:
+        with open(args.state_file, 'r') as f:
+            state = json.load(f)
+    except:
+        pass
+cutoff = state.get('last_update') or (time.time() - 2 * 7 * 24 * 60 * 60)
+
+entries = get_entries()
+if entries:
+    text = '# Recent Secure Scuttlebutt Development Activity\n\n' + '\n'.join([f' * [{entry[1]}] [{entry[3]}]({entry[2]})' for entry in entries if entry[0] > cutoff])
+    state['last_update'] = entries[0][0]
+    if args.state_file:
+        with open(args.state_file, 'w') as f:
+            json.dump(state, f)
+        content = json.dumps({'type': 'post', 'text': text, 'mentions': []})
+        subprocess.check_call(['out/debug/tildefriends', 'publish', '--user', 'cory', '--identity', '@DnYDqFfmxdNkYQlpflF9Wkltk2HIhJ5u1MW5njKPLzM=.ed25519', '--content', content])
+    else:
+        print(text)