rss-bot: Support unordered RSS feeds

[Niloth-p]

Fixes: #831

I've tested the basic functionality (unordered feeds + max batch size), but I haven't tested every case thoroughly (yet).

Self-review checklist

• Self-reviewed the changes for clarity and maintainability
  (variable names, code reuse, readability, etc.).

Communicate decisions, questions, and potential concerns.

• Explains differences from previous plans (e.g., issue description).
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Completed manual review and testing of the following:

• Visual appearance of the changes.
• Responsiveness and internationalization.
• Strings and tooltips.
• End-to-end functionality of buttons, interactions and flows.
• Corner cases, error conditions, and easily imagined bugs.

[Niloth-p]

@Pritesh-30 Could you please help me manually test this PR?
We'd want to check that the following cases work fine:

• oldest-first / newest-first / especially unordered feeds
• with a max batch size (less than the number of new entries) and earliest entry age (less than the oldest unhashed entries)
• Entries without time tags

And let me know if you can find any missing edge cases.

[Pritesh-30]

@Pritesh-30 Could you please help me manually test this PR? We'd want to check that the following cases work fine:

• oldest-first / newest-first / especially unordered feeds
• with a max batch size (less than the number of new entries) and earliest entry age (less than the oldest unhashed entries)
• Entries without time tags

And let me know if you can find any missing edge cases.

@Niloth-p Sure, I can help with the manual testing. I’ll run this locally against a few feeds and the cases you have mentioned & report back with the results once I’m done.

[Pritesh-30]

@Niloth-p I manually tested using real RSS feeds. I used the following feeds for testing:

• https://uptime.com/rss
• https://blog.python.org/feeds/posts/default

The entries were posted to the test here stream.

I tested for :

• Newest-first feeds as well as unordered / oldest-first ones
• Behavior when the number of new entries is greater than max-batch-size
• earliest-entry-age by running against a fresh data directory
• Multiple consecutive runs to make sure entries aren’t duplicated and previously the feed that were not sent
  are getting posted making final run feed to zero
• Feeds where entries don’t have time tags

Observed behavior:

• Unordered feeds are getting scanned properly without stopping
• Hash persistence works correctly no duplicate feeds are sent
• I verified that max-batch-size behaves correctly when there are more new entries than the batch limit — entries that aren’t sent aren’t hashed and show up in the next run.
• Entry age filtering works as expected. I verified this by adjusting the cutoff — only entries within the specified age were sent.
• Entries without time tags are handled correctly and don’t cause the run to fail.

One edge case I encountered:

• Current script assumes that for every feed feed.title exist . Feeds without a feed.title cause the script to crash. So we have to add a fallback here. For my testing I changed this feed_name: str = data.feed.title or feed_url to
  feed_name: str = getattr(data.feed, "title", None) or feed_url

Overall, behavior looks correct from manual testing.

[Niloth-p]

Thank you for testing, @Pritesh-30!
Ah, is that so? I'd have expected feed.title to be provided by feedparser even if it doesn't exist. I'll have to check that. Which URL did that happen with?

(Marking this as draft because I want to discuss a couple of design decisions on CZO before proceeding.)

[Pritesh-30]

@Niloth-p It happend with this feed https://uptime.com/rss. I looked into it, it says feedparser handles if title is present and empty but not if the title tag is is not present.
Thanks! Let me know if there’s anything else I can help with!