module Prosody

# File lib/diaspora-prosody-config.rb, line 35
def self.start
  if check_sanity.nil?
    @prosody_pid = Process.spawn("#{find_binary} --config #{WRAPPERCFG}")
    # Prosody was forked into background
    # Let's wait till the Wrapper
    # will be killed or prosody itself
    Process.waitpid(@prosody_pid)
  end
end

# File lib/diaspora-prosody-config.rb, line 45
def self.update_configuration(opts = {})
  # update prosody cfg in diaspora config dir
  gemcfg = "#{WRAPPERCFG}.tpl"
  unless File.exist?(DIASPORACFG)
    FileUtils.cp(gemcfg, DIASPORACFG)
  end

  config = File.read(DIASPORACFG)
  config_params(opts).each do |k, v|
    config.gsub!(/\#\{#{k}\}/, "#{v}")
  end
  File.open(WRAPPERCFG, 'w') {|f| f.write(config) }
  # check if prosody is available
  check_sanity
end

# File lib/diaspora-prosody-config.rb, line 82
  def self.check_sanity
    # check if configuration is matching
    usrcfg = Digest::MD5.hexdigest(File.read(DIASPORACFG))
    gemcfg = Digest::MD5.hexdigest(File.read("#{WRAPPERCFG}.tpl"))
    unless usrcfg.eql?(gemcfg)
      abort <<-eos
FATAL:
*****************************************************************

#{usrcfg} != #{gemcfg}

You modified #{DIASPORACFG}
Please run:
  cp config/prosody.cfg.lua $(bundle show diaspora-prosody-config)/etc/prosody.cfg.lua.tpl

Otherwise your configuration changes will not take effect!
*****************************************************************
      eos
    end
    # check on bcrypt and warn
    bcrypt_so = %x(find /usr/local/lib -name bcrypt.so) rescue ''
    if bcrypt_so.empty?
      warn("#{NAME}: bcrypt is required for diaspora authentication")
    end
    # check prosody version
    about = %x(#{find_binary}ctl --config #{WRAPPERCFG} about)
    version_string = begin
      about.match(/prosody\s(\d+\.\d+\.\d+)/i).captures[0]
    rescue
      abort "#{NAME}: #{about}"
    end
    version = Gem::Version.new(version_string)
    if version < Gem::Version.new('0.9.0')
      abort "#{NAME}: Your're prosody version should be >= 0.9.0"
    end
  end

# File lib/diaspora-prosody-config.rb, line 119
def self.config_params(opts)
  db = Rails.application.config.database_configuration[Rails.env]
  hostname = AppConfig.environment.url
    .gsub(/^http(s){0,1}:\/\/|\/$/, '')
    .to_s rescue 'localhost'

  opts[:virtualhost_ssl_key] = "#{opts[:certs]}/#{hostname}.key"
  opts[:virtualhost_ssl_crt] = "#{opts[:certs]}/#{hostname}.crt"

  opts[:plugin_path] = "#{GEMDIR}/modules"
  opts[:virtualhost_hostname] =
    hostname.gsub(/^http(s){0,1}:\/\/|\/$/, '').to_s rescue 'localhost'

  opts[:virtualhost_driver] =
    case opts[:virtualhost_driver]
    when 'mysql2' then 'MySQL'
    when 'postgresql' then 'PostgreSQL'
    else 'SQLite3'
    end
  opts
end

# File lib/diaspora-prosody-config.rb, line 61
  def self.find_binary
    ENV['PATH'].split(':').each do |p|
      prosodybin = "#{p}/prosody"
      return prosodybin if File.exist?(prosodybin)
    end
    abort <<-eos
FATAL:
*****************************************************************
#{NAME} wasn't able to find your prosody binary.
Have you installed prosody (http://prosody.im/download/start)?

If you run Prosody or any other XMPP server by yourself you can
disable #{NAME} by editing your diaspora.yml:
configuration:
  chat:
    server:
      enabled: false
*****************************************************************
    eos
  end

# File lib/diaspora-prosody-config.rb, line 141
def self.shutdown
  unless @prosody_pid.nil?
    Process.kill(9, @prosody_pid)
  end
end