Hubot script that will send a direct message to any person that gets assigned to a pull request.

notify_on_pr_assignments.coffee

# Description
#   Hubot script that will send a direct message to any person that gets assigned to a pull request.
#   This came out of a discussion where a customer received too many GitHub notifications and wanted something
#   succinct for the pull request assignment event.
#
# Dependencies:
#   This script was tested with the slack adapter.
#   In order to make use of it, you would have to put into Hubot's script folder and setup a GitHub webhook that points to
#   <hubot deployment url>/hubot-pr and is delivering at least the pull requests events of the repositories you are interested 
#
# Author:
#   jonico

module.exports = (robot) ->

  robot.router.post '/hubot-pr', (req, res) ->
    switch req.headers['x-github-event']
      when "pull_request"
        if req.body.action is "assigned"
          assignee = req.body.pull_request.assignee.login
          pr_number = req.body.number
          pr_title = req.body.pull_request.title
          pr_url = req.body.pull_request.url
          robot.messageRoom assignee, "You got assigned to pull request ##{pr_number} #{pr_title}: #{pr_url}"
        res.writeHead 204, {'content-type': 'application/json' }
        return res.end(JSON.stringify({message: "PR processed from #{robot.name}. :D"}))
      else
        res.writeHead 204, {'content-type': 'application/json' }
        return res.end(JSON.stringify({message: "Received but not processed."}))