slack status updater

slack_status

#!/usr/bin/ruby

require 'net/http'
require 'optparse'
require 'json'
require 'date'

API_TOKEN = ENV['SLACK_TOKEN']

OPTS = Hash[ ARGV.join(' ').scan(/--?([^=\s]+)(?: (\S+))?/) ] # regex to arrange args in hash
ARGS = ARGV - OPTS.keys.map{|k| "--#{k}"}
URL = 'https://slack.com/api/users.profile.set'
HEADERS = {
    'Authorization'=> "Bearer #{API_TOKEN}",
    'Content-Type' =>'application/json; charset=ISO-8859-1',
    'Accept'=>'application/json'
}

SIGNED_OFF = {
    profile: {
        status_text: "Signed off, call if urgent.",
        status_emoji: ":mobile_phone_off:",
        status_expiration: DateTime.new( DateTime.now.year,  DateTime.now.month,  DateTime.now.day, 23, 59, 59, DateTime.now.zone).to_time.to_i
    },
}

LUNCH = {
    profile: {
        status_text: "Lunch",
        status_emoji: ":pizza:",
        status_expiration: DateTime.new( DateTime.now.year,  DateTime.now.month,  DateTime.now.day, 15, 00, 00, DateTime.now.zone).to_time.to_i
    },
}

uri = URI(URL)

STATUS_MAPS = {
    signed_off: SIGNED_OFF,
    lunch: LUNCH
}

unless ARGS[0]
    STDERR.puts "Require additional status parameter from - [#{STATUS_MAPS.keys.join(', ')}]"
    Kernel.exit(1)
end

status_to_update = STATUS_MAPS[ARGS[0].to_sym]
puts status_to_update

req = Net::HTTP::Post.new(uri, HEADERS)
req.body = status_to_update.to_json
res = Net::HTTP.start(uri.hostname, uri.port, :use_ssl => uri.scheme == 'https') do |http|
  http.request(req)
end

puts JSON.parse(res.body)

Obtaining token (source: https://github.com/yuya373/emacs-slack#how-to-get-token):

1. Go to https://my.slack.com/customize
2. Open developer tools
3. Go to the console and enter: window.prompt("your api token is: ", TS.boot_data.api_token)
4. create env variable SLACK_TOKEN and set it to the token

Example usage (crontab)

# Slack update lunch during weekdays 2:30 PM - 3:00 PM.
30 14 * * 1-5 bash -lc "slack_status lunch 1>&2"
# slack sign off weekdays 8:30 PM till midnight.
30 20 * * 1-5 bash -lc "slack_status signed_off 1>&2"