#!/usr/bin/env ruby
require 'rubocop'

def prepare_msg(ticket_number, commit_message, path_to_commit_msg)
  return if ticket_number.blank?

  prefix_regexp = Regexp.new("^(\\[#{ticket_number}\\]|fixup!|squash!)")
  return if commit_message.match(prefix_regexp)

  File.write(path_to_commit_msg, "[#{ticket_number}] #{commit_message}")
end

path_to_commit_msg = ARGV[0]
init_commit_message = File.read(path_to_commit_msg)
ticket_number = %x(git symbolic-ref --short HEAD | grep -i -o -E '(TZN|TKXEL|CORE|TRA|BACKTES|INTEG|GROWTH)-[0-9]+' | tr '[:lower:]' '[:upper:] | xargs').to_s.chomp

prepare_msg(ticket_number, init_commit_message, path_to_commit_msg)

exit 0