# Copyright (c) 2013-2014 SUSE LLC
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of version 3 of the GNU General Public License as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.   See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, contact SUSE LLC.
#
# To contact SUSE about this file by physical or electronic mail,
# you may find current contact information at www.suse.com

class ShowTask
  def show(description, scopes, options = {})
    if options[:show_html]
      show_html(description)
    else
      show_console(description, scopes, options )
    end
  end

  private

  def show_html(description)
    begin
      LocalSystem.validate_existence_of_package("xdg-utils")
      Html.generate(description)
      html_path = SystemDescriptionStore.new.html_path(description.name)
      LoggedCheetah.run("xdg-open", html_path)
    rescue Cheetah::ExecutionFailed => e
      raise Machinery::Errors::OpenInBrowserFailed.new(
        "Could not open system description \"#{description.name}\" in the web browser.\n" \
          "Error: #{e}\n"
      )
    end
  end

  def show_console(description, scopes, options)
    missing_scopes = []
    output = ""

    scopes.map { |s| Renderer.for(s) }.each do |renderer|
      section = renderer.render(description, options)
      unless section.empty?
        output += section
      else
        missing_scopes << renderer.scope
      end
    end

    if missing_scopes.length > 0
      output += "# The following requested scopes were not inspected\n\n"
      missing_scopes.each do |scope|
        output += "  * #{Machinery::Ui.internal_scope_list_to_string(scope)}\n"
      end
    end

    Machinery::Ui.print_output(output, :no_pager => options[:no_pager])
  end
end