clear_hipchat.rb

#!/usr/bin/env ruby

# Modified from https://gist.github.com/jpr5/4260656

# Usage:
#  HIPCHAT_USER="user@company.com" HIPCHAT_PASS="secret" bundle exec ./clear_hipchat.rb

require 'mechanize'
require 'chronic'

account = {
  email:     ENV['HIPCHAT_USER'],
  password:  ENV['HIPCHAT_PASS'],
}

agent = Mechanize.new
site = agent.post("https://www.hipchat.com/sign_in", account).uri.host

# Get our user id
results = agent.get("https://#{site}/account").search('img[alt="Your photo"]')

if results && !results.empty?
  member_id = results.first["src"].match(%r{photos/(\d+)})[1]
else
  $stderr.puts "ERROR: You need to put a photo in your profile in order to get your member's ID."
  exit 1
end

$stdout.puts "==> Your HIPCHAT member ID: #{member_id}"

# Determine our Signup date and the actual date
registered_around = agent.
  get("https://#{site}/people/show/#{member_id}").
  search('li:contains("Signed up")').
  text.
  sub(/Signed up: /, '')

registered_on = Chronic.parse(registered_around).to_date
intervals = (registered_on..Date.today).map { |d| d.strftime("/%Y/%m/%d") }

# Identify all users ids
members = agent.
  get("https://#{site}/people").
  search("ul.members").
  children.
  search("a").
  map { |m| m.attributes["href"].value }.
  reject { |m| m =~ /#{member_id}/ }

# Get and delete all messages between the users and you
members.each do |member|
  real_member_id = member.match('/[0-9]*/')[0]
  total = 0

  $stdout.puts ''
  $stdout.puts "==> Deleting messages for member: #{member}"
  intervals.each do |interval|
    messages = []
    messages += agent.
      get("https://#{site}/history/member#{real_member_id}#{interval}").
      search("input[name=message_id]").
      map { |m| m["value"] }

    messages.each do |msg_id|
      agent.post(
        "https://#{site}/history/member#{real_member_id}",
        { action: "delete", message_id: msg_id }
      )

      $stdout.write '.'
      total += 1
    end
  end
  $stdout.puts "--> Deleted #{total} messages"
end

$stdout.puts "==> All messages deleted."

Gemfile

# A sample Gemfile
source "https://rubygems.org"

gem 'mechanize'
gem 'chronic'