#!/usr/bin/env ruby

require 'uri'
require 'net/http'
require 'open3'
require 'yaml'

class Options
  def initialize(args)
    @args = args
  end

  def verb
    @args[0]
  end

  def hipchat_token
    ci_config["hipchat_token"]
  end

  def hipchat_room
    ci_config["hipchat_room"]
  end

  def matchers
    ci_config["matchers"]
  end

  def url_prefix
    ci_config["url_prefix"]
  end

  def valid?
    [ "fail", "success" ].include?(verb) && !ci_config.nil? &&
    hipchat_token && hipchat_room && matchers
  end

  private

  def ci_config
    config_file_name = "./ci/config.yml"
    if File.exists?(config_file_name)
      @ci_config ||= YAML.load_file("./ci/config.yml")
    else
      nil
    end
  end
end

class Git
  def initialize(matchers)
    @matchers = matchers
  end

  def last_comitter_name
    map_comitter_name `git log -1 "--pretty=format:%an"`
  end

  def last_commit_sha
    `git log -1 "--pretty=format:%h"`
  end

  def last_commit_time
    `git log -1 "--pretty=format:%ai"`
  end

  private

  def map_comitter_name(name)
    @matchers.each { |regex, value|
      return value if regex.match(name)
    }
    return "Юзернейм"
  end
end

class TalkingRamil
  class << self

    def announce(what, hero, url_prefix=nil)
      puts "Announcing #{what} for #{hero}"
      send_ramil_request(url_prefix || "http://192.168.10.32:8082/build", what, hero: hero)
    end

    private

    def send_ramil_request(url_prefix, verb, params={})
      Net::HTTP.post_form(URI.parse("#{url_prefix}/#{verb}"), params)
    end
  end
end

class Hipchat
  class << self
    def announce(token, room, what, moment, hash, hero)
      send("announce_#{what}", token, room, moment, hash, hero)
    end

    private

    def announce_success(token, room, moment, hash, hero)
      message = %Q|<b>#{hash}  #{hero} @ #{moment}</b><br />Зелёный билд, дамы и господа!|
      send_hipchat(token, room, "green", message)
    end

    def announce_fail(token, room, moment, hash, hero)
      message = %Q|<b>#{hash}  #{hero} @ #{moment}</b><br />Билд безнадёжно сломан!|
      send_hipchat(token, room, "red", message)
    end

    def send_hipchat(token, room, color, text)
      stdin, stdout_and_stderr, wait_thr = Open3.popen2e(File.expand_path("../hipchat_room_message", __FILE__),
                                                         "-t", token, "-f", "CI", "-c", color, "-r", room, "-n")
      stdin.write(text)
      stdin.close
      stdout_and_stderr.close
    end
  end
end

opts = Options.new(ARGV)
unless opts.valid?
  puts "usage: uniq-ci-report success|fail"
  puts "\nci/config.yml must contain: 'hipchat_token', 'hipchat_room' and 'matchers' keys"
  exit(-1)
end

git = Git.new(opts.matchers)
Hipchat.announce(opts.hipchat_token, opts.hipchat_room, opts.verb, git.last_commit_time, git.last_commit_sha, git.last_comitter_name)
TalkingRamil.announce(opts.verb, git.last_comitter_name, opts.url_prefix)

case opts.verb
  when "success"
    exit(0)
  when "fail"
    exit(1)
  else
    raise "Unknown verb: #{opts.verb}"
end