ManageIQ/manageiq-ui-classic

class ApplicationController
  module Timezone
    extend ActiveSupport::Concern

    included do
      helper_method :get_timezone_abbr, :get_timezone_offset
      helper_method :server_timezone
    end

    # return timezone abbreviation
    def get_timezone_abbr(user = nil)
      time = user ? Time.zone.now : Time.now.in_time_zone(server_timezone)
      time.strftime("%Z")
    end

    # returns utc_offset of timezone
    def get_timezone_offset(user = nil, formatted = false)
      tz = user ? user.get_timezone : server_timezone
      tz = ActiveSupport::TimeZone::MAPPING[tz]
      ActiveSupport::TimeZone.all.each do |a|
        if ActiveSupport::TimeZone::MAPPING[a.name] == tz
          if formatted
            return a.formatted_offset
          else
            return a.utc_offset
          end
        end
      end
    end

    def server_timezone
      MiqServer.my_server.server_timezone
    end
  end
end