require 'rho_connect_install_constants'
require 'rho_connect_install_checkers'

include Checkers

module Installers
  # configure_passenger
  # This method installs items that were retrieved via wget as well as passenger
  def configure_passenger(options)
    raise "Please stop the web server and then reinstall the package." if check_web_server_running

    @options=options
    print_header "Configuring passenger ..."
    if @options[:web_server]
      if @options[:web_server] == "apache2"
        print_header "Configuring apache2 to work with passenger ..."
        cmd "yes | #{@options[:prefix]}/bin/passenger-install-#{ @options[:web_server] }-module"
      elsif @options[:web_server] == "nginx"
        nginx_version = Constants::Nginx
        print_header "Downloading http://nginx.org/download/#{nginx_version}.tar.gz ..."
        cmd "cd #{@options[:prefix]}; wget http://nginx.org/download/#{nginx_version}.tar.gz -o /dev/null; tar -xzvf #{nginx_version}.tar.gz"        
        print_header "Configuring and compiling Nginx to work with passenger ..."
        cmd "#{@options[:prefix]}/bin/passenger-install-nginx-module --auto --prefix=/opt/nginx \
        --nginx-source-dir=#{@options[:prefix]}/#{nginx_version} \
        --extra-configure-flags='--with-http_ssl_module --with-http_gzip_static_module --user=nginx --group=nginx'"
      else
        raise "Unsupported web server."   
      end
    end
    raise "Nginx installation failed." if $? != 0
  end
    
  # install_all_gems
  # This method installs all gems specified in the GEMS list defined in the
  # Constants file
  def install_all_gems
    @gem_path = "#{@options[:prefix]}/bin/gem"

    # Update the RubyGems system software 
    cmd "#{@gem_path} update --system" 

    Constants::GEMS.each do |gem|
      install_gem gem
    end
  end

  # install_gem
  # This method installs the given gem unless it is already installed
  def install_gem(gem)
    cmd "#{@gem_path} install #{gem} --no-ri --no-rdoc" unless check_gem(gem, @gem_path)
    raise "#{gem} installation failed." if $? != 0
  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
    print_header "Installing redis ..."

    Dir.chdir("#{@options[:prefix]}/#{Constants::REDIS}/src")
    cmd "make 2>&1; make PREFIX=#{@options[:prefix]} install"
    raise "Redis installation failed." if $? != 0

    `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 #install_redis

  # install_sqlite
  # This method instaqll sqlite
  def install_sqlite
    print_header "Installing sqlite3 libs ..."
    Dir.chdir("#{@options[:prefix]}/#{Constants::SQLITE3}")
    cmd "./configure --prefix=#{@options[:prefix]}"
    cmd "make 2>&1; make install"
    raise "Installation if sqlite3 libraries failed." if $? != 0
  end #install_sqlite

  # install_rhoconnect
  # This method installs rhoconnect
  def install_rhoconnect
    print_header "Installing rhoconnect ..."
    Dir.chdir(@options[:start_dir])

    cmd "#{@options[:prefix]}/bin/bundle config build.sqlite3 " +
        "--with-sqlite3-include=#{@options[:prefix]}/include " +
        "--with-sqlite3-lib=#{@options[:prefix]}/lib" if @options[:pkg_mgr]  =~ /yum/ # CentOS

    gem_name = (Dir.glob "rhoconnect-*.gem")[0]
    if gem_name && File.exists?(gem_name)
      install_gem gem_name
    else
      cmd "#{@options[:prefix]}/bin/bundle install --system --binstubs=/opt/rhoconnect/bin --without=test development"
      # PATH=/opt/rhoconnect/bin:$PATH rake build
      cmd "PATH=#{@options[:prefix]}/bin:$PATH rake build"
      cmd "#{@gem_path} install pkg/rhoconnect-*.gem --no-ri --no-rdoc"
      raise "Gem installation failed." if $? != 0
      #`rm -f pkg/rhoconnect-*.gem`
    end
  end
end