pingme - A simple way to ping a Mattermost webhook from the command line and send STDIN

pingme.rb

#!/usr/bin/env ruby

# Sends a ping to a Mattermost webhook and can include stdin as a code block
#
#
# Options
#  -c, --channel <channel_name> - Name of channel to post to. Use @username to send a DM
#  -u, --username <username> - username to post as, if the webhook allows it
#  -i, --icon_url <icon_url> - URL of user icon to use

require 'net/https'
require 'uri'
require 'json'
require 'pp'
require 'slop'

opts = Slop.parse do |o|
	o.string '-c', '--channel', 'channel_name'
	o.string '-u', '--username', 'username'
	o.string '-i', '--icon_url', 'icon_url'
end

data = opts.to_hash

# TODO: Read this from something configurable. Or even better, make this an API call
webhook_url = "https://mattermost.example.com/hooks/n4kkjnksf9s9jfn49sokdfj48n"

text = 'Ping!'

if opts.arguments.length > 0
	text = opts.arguments.join(' ')
end

# Grab STDIN if it's not a TTY and add it as a code block
if ! $stdin.tty?
	std_input = $stdin.read

	if std_input.length > 0
		text += "\n"
		text += "```\n"
		text += std_input
		text += "\n"
		text += "```"
	end	
end

data[:text] = text

json_headers = {"Content-Type" => "application/json",
                "Accept" => "application/json"}

uri = URI.parse(webhook_url)
http = Net::HTTP.new(uri.host, uri.port)

http.use_ssl = true
http.verify_mode = OpenSSL::SSL::VERIFY_NONE

response = http.post(uri.path, data.to_json, json_headers)

if response.body() != 'ok'
	puts "Pingme error: #{response.code} #{response.body()}"
end