# Copyright (C) 2011 RightScale, Inc, All Rights Reserved Worldwide.
#
# THIS PROGRAM IS CONFIDENTIAL AND PROPRIETARY TO RIGHTSCALE
# AND CONSTITUTES A VALUABLE TRADE SECRET. Any unauthorized use,
# reproduction, modification, or disclosure of this program is
# strictly prohibited. Any use of this program by an authorized
# licensee is strictly subject to the terms and conditions,
# including confidentiality obligations, set forth in the applicable
# License Agreement between RightScale.com, Inc. and
# the licensee

module RightConf

  class PackageInstaller

    include Singleton
    include ProgressReporter

    # Install given packages
    #
    # === Parameters
    # packages(String|Array):: Package name or Packages list
    # opts[:abort_on_failure](String):: Optional, abort configuration
    #   and display given error message if install fails when set
    # opts[:report](TrueClass|FalseClass):: Whether to report installation
    #
    # === Return
    # true:: Always return true
    def install(packages, opts=nil)
      packages = [ packages ].flatten
      report = opts && opts.delete(:report)
      report_check("Installing the following packages:\n#{packages.join(' ')}\nThis could take a while") if report
      Platform.dispatch(packages, opts) { :install }
      report_success if report
    end

    protected

    # Install debian packages
    #
    # === Return
    # true:: Always return true
    def install_linux_ubuntu(packages, opts)
      return if packages.nil? 
      args = packages.dup 
      args << opts if opts
      Command.sudo('apt-get', 'install', '-y', *args)
    end
    alias :install_linux_debian :install_linux_ubuntu

    # Install yum packages
    #
    # === Return
    # true:: Always return true
    def install_linux_centos(packages, opts)
      return if packages.nil?
      args = packages.dup 
      args << opts if opts
      Command.sudo('yum', 'install', '-y', *args)
    end
    alias :install_linux_redhat :install_linux_centos

    # Use brew on Mac OS X
    #
    # === Return
    # true:: Always return true
    def install_darwin(packages, opts)
      return if packages.nil?
      BrewInstaller.check_and_install
      packages.each do |p|
        args = [ p ]
        args << opts if opts
        Command.execute('brew', 'install', *args)
      end
    end
    
    # Install Windows software
    #
    # === Return
    # true:: Always return true
    def install_windows(packages, opts)
      # TBD
    end

  end
end