post-receive-hipchat

#! /usr/bin/env ruby

require 'rubygems'
require 'hipchat-api'
require 'yaml'
require 'time'

config = YAML::load(File.open(File.join(File.dirname(__FILE__), 'config.yml')))

# Exit if pushing to repo listed for exclusion in config file
repository = config['repository'] ||= File.basename(Dir.getwd, ".git")
exit if config['exclude_repos'].include?(repository)

message = ""
branches = []
tags = []

# Loop through STDIN, sort into branches and tags
STDIN.read.each do |line|
  oldrev, newrev, ref = line.split(' ')
  parsed_ref = ref.split('/')
  if parsed_ref[1] == "heads"
    revhash = { :oldrev => oldrev, :newrev => newrev, :branch => parsed_ref[2] }
    branches.push revhash
  elsif parsed_ref[1] == "tags"
    taghash = { :tag => parsed_ref[2], :rev => newrev }
    tags.push taghash
  else
    # ignore
  end
end

chat = HipChat::API.new(config['hipchat_token'])
url = "#{config['gitweb_url']}/#{repository}.git/commit/" unless config['use_url'] == false
GIT = `which git`.strip

# Loop through ref/heads/* and print commit messages
if branches.any?
  message += "<strong>#{repository}</strong> has been pushed commits:<br>"
  branches.each do |b|
    
    message += "To branch <strong>#{b[:branch]}</strong>:<br>"
    # Generate array of all new commits
    commit_log = `#{GIT} log --branches=#{b[:branch]} #{b[:oldrev]}..#{b[:newrev]} --reverse`
    commits = commit_log.split("\n\ncommit ")

    commits.each do |com| 
      revision = com[/([a-f0-9]{40})/]
      commit_author  = `#{GIT} show --pretty=format:"%an" #{revision} | sed q`.chomp 
      commit_msg     = `#{GIT} show --pretty=format:"%s" #{revision}  | sed q`.chomp
      if config['use_url']
        rev_info = "<a href=\"#{url + revision}\">#{revision[0,6]}</a>"
      else
        rev_info = revision[0,6]
      end
      message += "&nbsp;&nbsp;- (#{rev_info}) #{commit_author}: #{commit_msg}<br>"
    end
  end
end

# Loop through ref/tags/* and print tag names & annotations
if tags.any?
  message += "<strong>#{repository}</strong> has been pushed tags:<br>"
  tags.each do |t|
    message += "Tag <strong>#{t[:tag]}</strong>:<br>"
    tag_msg = `#{GIT} show #{t[:tag]} | sed -n 5p`.chomp
    if config['use_url']
      rev_info = "<a href=\"#{url + t[:rev]}\">#{t[:rev][0,6]}</a>"
    else
      rev_info = t[:rev][0,6]
    end
    message += "&nbsp;&nbsp;- (#{rev_info}) #{tag_msg}<br>"
  end
end

# Speak!
chat.rooms_message(config['hipchat_room_id'], config['hipchat_name'], message, notify = 0)