draw the rest of the owl

app/routes/threads.py

@@ -1,31 +1,35 @@
 from flask import (
     Blueprint, render_template, request, redirect, url_for, flash,
-    abort,
+    abort, current_app,
     )
 from .users import login_required, mod_only, get_active_user, is_logged_in
 from ..db import db
 from ..models import Threads, Topics, Posts, Subscriptions, Reactions
 from ..constants import InfoboxKind
+from ..lib.render_atom import render_atom_template
 from .posts import create_post
 from slugify import slugify
+from app import cache
 import math
 import time
 
 bp = Blueprint("threads", __name__, url_prefix = "/threads/")
 
 
-def get_post_url(post_id, _anchor=False):
+def get_post_url(post_id, _anchor=False, external=False):
     post = Posts.find({'id': post_id})
     if not post:
         return ""
 
     thread = Threads.find({'id': post.thread_id})
 
-    res = url_for('threads.thread', slug=thread.slug, after=post_id)
-    if not _anchor:
-        return res
+    anchor = None if not _anchor else f'post-{post_id}'
 
-    return f"{res}#post-{post_id}"
+    return url_for('threads.thread', slug=thread.slug, after=post_id, _external=external, _anchor=anchor)
+    # if not _anchor:
+    #     return res
+
+    # return f"{res}#post-{post_id}"
 
 
 @bp.get("/<slug>")
@@ -80,9 +84,25 @@ def thread(slug):
         is_subscribed = is_subscribed,
         Reactions = Reactions,
         unread_count = unread_count,
+        __feedlink = url_for('.thread_atom', slug=slug, _external=True),
+        __feedtitle = f'replies to {thread.title}',
     )
 
 
+@bp.get("/<slug>/feed.atom")
+@cache.cached(timeout=5 * 60, unless=lambda: current_app.config.get('DEBUG', False))
+def thread_atom(slug):
+    thread = Threads.find({"slug": slug})
+    if not thread:
+        abort(404) # TODO throw an atom friendly 404
+        return
+
+    topic = Topics.find({'id': thread.topic_id})
+    posts = thread.get_posts_rss()
+
+    return render_atom_template('threads/thread.atom', thread=thread, topic=topic, posts=posts, get_post_url=get_post_url)
+
+
 @bp.post("/<slug>")
 @login_required
 def reply(slug):