#!/usr/bin/python3.8
#
# Simple script to send a notification to a Slack app's
# "Incoming Message Webhook". The configuration of that webhook
# determines where/how it will be distributed. This script
# doesn't care, and just uses the hook's default.
#

import sys
import configparser
import json
import argparse

import requests

CONFIG_FNAME = '/etc/homesvr/slack.conf'


def notify(args):
    cfg = configparser.ConfigParser()
    cfg.read(args.conf)

    if args.secondary:
        payload = {
            'text': f'{args.message} (more content)',
            'blocks': [
                {
                    'type': 'section',
                    'text': {
                        'type': 'mrkdwn',
                        'text': f'*{args.message}*',
                        },
                    },
                {
                    'type': 'section',
                    'text': {
                        'type': 'plain_text',
                        'text': args.secondary,
                        },
                    },
                ],
            }
    else:
        payload = {
            'text': args.message,
        }
    r = requests.post(cfg['webhook']['url'], json=payload)


if __name__ == '__main__':
    parser = argparse.ArgumentParser(description='Sent a notification to Slack.')
    parser.add_argument('--conf', default=CONFIG_FNAME,
                        help='Configuration file for Slack credentials/info.')
    parser.add_argument('-m', '--message', required=True,
                        help='Message to send to the Slack app/bot.')
    parser.add_argument('-s', '--secondary',
                        help='Secondary/subtitle message to send.')
    args = parser.parse_args()

    notify(args)