begin
 require 'rubygems'
 require 'twitter'
rescue LoadError
  %x{echo "repo:#{ARGV[0]} rev: #{ARGV[1]}" > /tmp/svn-hooks.log}
  %x{echo "Error: #{$!} trace:#{caller}" >> /tmp/svn-hooks.log}
end

def gather_and_post(repo_path, revision)
  svnlook = '/usr/bin/svnlook'

  commit_dirs_changed = `#{svnlook} dirs-changed #{repo_path} -r #{revision}`
  return unless commit_dirs_changed.split(/\n/)[0] =~ /trunk/

  commit_author  = `#{svnlook} author #{repo_path} -r #{revision}`.chop
  commit_log     = `#{svnlook} log #{repo_path} -r #{revision}`
  commit_changed = `#{svnlook} changed #{repo_path} -r #{revision}`

  changed_count = commit_changed.split("\n").length

  message =  "SVN: Rev. #{revision.to_s} by #{commit_author}"
  message << " \"#{commit_log}\" (#{changed_count} Change(s))"

  # TODO set the email and password below.
  Twitter::Base.new(TWITTER_EMAIL, TWITTER_PASS).post(message)
end

begin
  gather_and_post(ARGV[0], ARGV[1])
rescue
  %x{echo "repo:#{ARGV[0]} rev: #{ARGV[1]}" > /tmp/svn-hooks.log}
  %x{echo "Error: #{$!} trace:#{caller}" >> /tmp/svn-hooks.log}
end