#!/opt/rhoconnect/bin/ruby

require 'rho_connect_install_constants'
require 'readline'

module Installers
  extend self
  # configure_passenger
  # This method installs items that were retrieved via wget as well as
  # passenger
  def configure_passenger(options)
    @options = options
    installs = 0
    print_header "Configuring Passenger"
    print_header "Configuring Nginx to work with Passenger"
    cmd "#{@options[:prefix]}/bin/passenger-install-#{@options[:web_server]}-module " + 
        "--auto --auto-download --prefix=/opt/rhoconnect/bin"
    if $? != 0
      log_print "Passenger not configured."
      exit
    end #if
  end #configure_passenger
  
  # install_all_gems
  # This method installs all gems specified in the GEMS list defined in the
  # Constants file
  def install_all_gems(options)
    @options = options
    @gem_path = "#{@options[:prefix]}/bin/gem"
    Constants::GEMS.each do |gem|
      install_gem gem
    end #do
  end #install_all_gems

  # install_gem
  # This method installs the given gem
  def install_gem(gem)
    cmd "#{@gem_path} install #{ gem } --no-ri --no-rdoc"
  end #install_gem

  # install_rubygems
  # This method installs rubygems which was downloaded and untarred earlier
  def install_rubygems
    print_header "Installing Rubygems"
    Dir.chdir("#{@options[:prefix]}/#{Constants::RUBYGEMS}")
    cmd "#{@options[:prefix]}/bin/ruby setup.rb --prefix=#{@options[:prefix]}/#{Constants::RUBYGEMS}"
    @gem_path = "#{@options[:prefix]}/bin/gem"
    cmd "sed -n '1 c\#!/opt/rhoconnect/bin/ruby' #{@options[:prefix]}/bin/gem"
  end #install_rubygems

  # install_redis
  # This method installs redis
  def install_redis(options)
    @options = options
    puts "\nWould you like to install Redis (yes / no)?"
    answer = STDIN.readline.strip.downcase
    while answer != "yes" &&
          answer != "no"
      puts "Please answer yes or no."
    end
    
    if answer == "yes"
      Dir.chdir("#{@options[:prefix]}/#{Constants::REDIS}/src")
      cmd "make; make PREFIX=#{@options[:prefix]} install"
      cmd "mkdir #{@options[:prefix]}/etc" unless File.exist? "#{@options[:prefix]}/etc"
      
      #cmd "cp ../redis.conf #{@options[:prefix]}etc"
      redis_conf_file = File.new("#{@options[:prefix]}/etc/redis.conf", 'w')
      File.foreach("../redis.conf") do |line|
        # daemonize no   --> daemonize yes
        # logfile stdout --> logfile /var/log/redis.log
        if line =~ /^daemonize/
          redis_conf_file << "daemonize yes" << "\n"
        elsif line =~ /^logfile/
          redis_conf_file << "logfile /var/log/redis.log"  << "\n"
        else
          redis_conf_file << line
        end
      end
      redis_conf_file.close
    end #if
  end #install_redis

  # install_sqlite
  # This method installs sqlite
  def install_sqlite(options)
    @options = options
    Dir.chdir("#{@options[:prefix]}/#{Constants::SQLITE3}")
    cmd "./configure --prefix=#{@options[:prefix]}"
    cmd "make; make install"
  end #install_sqlite

  # install_rhoconnect
  # This method installs rhoconnect
  def install_rhoconnect(options)
    @options = options
    print_header "Installing Rhoconnect"

    cmd "#{@gem_path} install rhoconnect-*.gem --no-ri --no-rdoc"
    cmd "rm -f rhoconnect-*.gem"

  end #install_rhoconnect
end #Installers