Support Slack Replies by allowing use of thread_timestamp

[AlexScotland]

Description:

This enhancement allows Slack notification plugin to accept timestamps of messages that it should reply too.

This allows Apprise to reply into multiple channel's messages, creating a chat thread for relevant notifications.

Syntax

Thread Timestamp (defined as {thread_ts} below can be added to defined elements using a colon : delimiter like so:

• slack://{tokenA}/{tokenB}/{tokenC}/#{channel}:{thread_ts}
• slack://{tokenA}/{tokenB}/{tokenC}/#{channel1}:{thread_ts}/#{channel2}:{thread_ts}/#{channelN}:{thread_ts}
• slack://{botname}@{tokenA}/{tokenB}/{tokenC}/+{encoded_id}:{thread_ts}
• slack://{botname}@{tokenA}/{tokenB}/{tokenC}/+{encoded_id1}:{thread_ts}/+{encoded_id2}:{thread_ts}/+{encoded_id3}:{thread_ts}
• slack://{botname}@{tokenA}/{tokenB}/{tokenC}/@{user_id}:{thread_ts}
• slack://{botname}@{tokenA}/{tokenB}/{tokenC}/@{user_id1}:{thread_ts}/@{user_id2}:{thread_ts}/@{user_id3}:{thread_ts}

New Service Completion Status

Not Applicable

Checklist

• The code change is tested and works locally.
• There is no commented out code in this PR.
• No lint errors (use flake8)
• 100% test coverage

Testing

Anyone can help test this source code as follows:

# Create a virtual environment to work in as follows:
python3 -m venv apprise

# Change into our new directory
cd apprise

# Activate our virtual environment
source bin/activate

# Install the branch
pip install git+https://github.com/caronc/apprise.git@<this.branch-name>

# Test out the changes with the following command:
apprise -t "Test Title" -b "Test Message" \
  slack://slack_bot_oauth/#channel1:timestamp1/channel2:timestamp2

[AlexScotland]

pushed changes for Walrus operator removal, as it was conflicting with the Docker build.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (c47de7f) 99.27% compared to head (92bde91) 99.27%.
Report is 4 commits behind head on master.

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Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1033      +/-   ##
==========================================
- Coverage   99.27%   99.27%   -0.01%     
==========================================
  Files         136      135       -1     
  Lines       17669    17563     -106     
  Branches     3603     3585      -18     
==========================================
- Hits        17541    17435     -106     
  Misses        119      119              
  Partials        9        9              

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[caronc]

That was fast! I'll review tomorrow 🚀🙂

[caronc]

I pushed a few changes to your code to handle some edge cases. Can you have a git pull in your branch and just double-check it's working okay for you?

Also, i'm curious if you could share/provide steps on how one can get the timestamp from Slack so that they can provide it into Apprise. Is it in the URL, or something they can copy and paste out of the message thread?

[AlexScotland]

I pushed a few changes to your code to handle some edge cases. Can you have a git pull in your branch and just double-check it's working okay for you?

Also, i'm curious if you could share/provide steps on how one can get the timestamp from Slack so that they can provide it into Apprise. Is it in the URL, or something they can copy and paste out of the message thread?

Just double checked, and seems the Regular expression is not matching on the CHANNEL_RE.search(channel) (line 568)

to answer your question, the slack api gives back a ts attribute on message send, which is the timestamp of the message. Some external storage tool could provide Apprise this data to send a thread.

It is also accessible on the slack frontend with some inspect element - slack uses the timestamp as the div's ID attribute

[AlexScotland]

Pushed a change to the regex that suits the naming schema a bit better - please verify if any adjustments are needed :)

[caronc]

Looks good! Great work! 🚀