slack-send

#!/usr/bin/env python3
#
# How to get a slack API token
#
# From https://github.com/yuya373/emacs-slack/tree/1f6a40faec0d8d9c9de51c444508d05a3e995ccd#how-to-get-token
# - Using chrome or firefox, open and sign into the slack customization page, e.g. https://my.slack.com/customize
# - Right click anywhere on the page and choose "inspect" from the context menu. This will open the developer tools.
# - Find the console (it's one of the tabs in the developer tools window)
# - At the prompt ("> ") type the following: window.prompt("your api token is: ", TS.boot_data.api_token)
# - Copy the displayed token elsewhere, and close the window.

import argparse
import os
import sys

from slack_sdk import WebClient
from slack_sdk.errors import SlackApiError

client = WebClient(token=os.getenv("SLACK_TOKEN"))

parser = argparse.ArgumentParser(description="Send messages to slack channels")
parser.add_argument("channel", metavar="CHANNEL", nargs=1)
parser.add_argument("message", metavar="MESSAGE", nargs="*")
parser.add_argument("--split-lines", default=False, action='store_true')
parser.add_argument("--mono", default=False, action='store_true')
args = parser.parse_args()

def send(msg):
    if args.mono:
       msg = "```%s```" % msg
    try:
        response = client.chat_postMessage(channel=args.channel[0], text=msg)
    except SlackApiError as e:
        print("Got an error: " + e.response['error'], file=sys.stderr)

if args.message:
    send(" ".join(args.message))
else:
    if not args.split_lines:
        send(sys.stdin.read())
    else:
        for line in sys.stdin:
            send(line)