post-receive-campfire

#!/usr/bin/env ruby

require 'rubygems'
gem     'broach'
require 'broach'
require 'yaml'
require 'time'

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

Broach.settings = {
  'account' => config['campfire_account'],
  'token'   => config['campfire_api_token'],
  'use_ssl' => config['campfire_use_ssl'] ||= true
}
room = Broach::Room.find_by_name(config['campfire_room'])
repository = config['repository'] ||= File.basename(Dir.getwd, ".git")
url = "#{config['gitweb_url']}/#{repository}.git/commit/" unless config['use_url'] == false

GIT = `which git`.strip

# Call to pre-speak hook
load File.join(File.dirname(__FILE__), 'pre-speak') if File.exist?(File.join(File.dirname(__FILE__), 'pre-speak'))

# Write in a file the timestamp of the last commit already posted to the room.
filename = File.join(File.dirname(__FILE__), repository[/[\w.]+/] + ".log")
if File.exist?(filename)
  last_revision = Time.parse(File.open(filename) { |f| f.read.strip })
else
  # TODO: Skip error message if push includes first commit?
  # Commenting out noisy error message for now
  # room.speak("Warning: Couldn't find the previous push timestamp.")
  last_revision = Time.now - 120
end

revtime = last_revision.strftime("%Y %b %d %H:%M:%S %Z")
File.open(filename, "w+") { |f| f.write Time.now.utc }

if config['message_format'] == "edouard"
  text = `#{GIT} log --all --since='#{revtime}' --reverse`
  lines = text.split("\n\ncommit ")

  if lines.any?
    room.speak "Repository #{repository} has been pushed with the following commits:", :type => :text
    lines.each do |line|
      revision       = line[/([a-f0-9]{40})/]
      commit_author  = `#{GIT} show --pretty=format:"%an" #{revision} | sed q`.chomp
      commit_log     = `#{GIT} show --pretty=format:"%s" #{revision}  | sed q`.chomp
      commit_date    = `#{GIT} show --pretty=format:"%aD" #{revision} | sed q`.chomp
      commit_changed = `#{GIT} diff-tree --name-status #{revision}    | sed -n '$p'`
      commit_changes = commit_changed.split("\n").inject([]) do |memo, line| 
        if line.strip =~ /(\w)\s+(.*)/
          memo << [$1, $2]
        end
      end.to_yaml
      room.speak "#{commit_author} commited “#{commit_log}”. #{url + revision}", :type => text
    end
  end

elsif config['message_format'] == "git-log"
  commit_changes = `#{GIT} log --name-status --since='#{revtime}' --reverse`
  unless commit_changes.empty?
    revision       = commit_changes[/([a-f0-9]{40})/]
    message = "Repository #{repository} has been pushed with the following commits:\n\n"
    message += commit_changes
    message += "\n"
    message += "View commit at: #{url + revision}\n" unless config['use_url'] == false
    room.speak("#{message}", :type => :paste)
  end
end

# Call to post-speak hook
load File.join(File.dirname(__FILE__), 'post-speak') if File.exist?(File.join(File.dirname(__FILE__), 'post-speak'))