text: #
  # Copyright (C) 2019 Michael Coughlin
  #
  # This program is free software; you can redistribute it and/or modify it
  # under the terms of the GNU General Public License as published by the
  # Free Software Foundation; either version 2 of the License, or (at your
  # option) any later version.
  #
  # This program is distributed in the hope that it will be useful, but
  # WITHOUT ANY WARRANTY; without even the implied warranty of
  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
  # Public License for more details.
  #
  # You should have received a copy of the GNU General Public License along
  # with this program; if not, write to the Free Software Foundation, Inc.,
  # 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  #
  """
  Some tools for parsing and composing slack messages.
  """
  __author__ = "Michael Coughlin <michael.coughlin@ligo.org>"
  
  from flask import render_template
  from slack import WebClient
  from celery.local import PromiseProxy
  
  from ..flask import app
  from . import celery
  from .. import models
  
  
  def get_client():
      return WebClient(token=app.config['SLACK_API_TOKEN'])
  
  
  client = PromiseProxy(get_client)
  
  
  @celery.task(ignore_result=True, shared=False)
  def slack_too(telescope, queue_name):
      body = render_template('too.email', telescope=telescope,
                             queue_name=queue_name)
  
      response = client.chat_postMessage(
          channel='#too-alerts',
          username='Grobot',
          as_user=False,
          icon_url='https://vignette.wikia.nocookie.net/mario/images/9/99/Grobot.png/revision/latest?cb=20130903151824',  # noqa: E501
          text=body)
  
      if not response["ok"]:
          raise RuntimeError('Slack ToO message failed...', response)
  
  
  @celery.task(ignore_result=True, shared=False)
  def slack_everyone(dateobs):
      event = models.Event.query.get(dateobs)
  
      body = render_template('event_new.email', event=event)
  
      response = client.chat_postMessage(
          channel='#too-alerts',
          username='Grobot',
          as_user=False,
          icon_url='https://vignette.wikia.nocookie.net/mario/images/9/99/Grobot.png/revision/latest?cb=20130903151824',  # noqa: E501
          text=body)
  
      if not response["ok"]:
          raise RuntimeError('Slack event message failed...', response)
  