minnestar / sessionizer

  def index

    unless Settings.show_schedule? || params[:force]

      redirect_to home_page_path

      return

    end

    @event = Event.current_event

    render layout: 'schedule'

  end

  def ical

    event = Event.current_event

    sessions = event.sessions.includes([:room, :timeslot])

    cal = Icalendar::Calendar.new

    # Set up timezone

    cal.timezone do |t|

      t.tzid = "America/Chicago"

      t.daylight do |d|

        d.tzoffsetfrom = "-0600"

        d.tzoffsetto   = "-0500"

        d.tzname       = "CDT"

        d.dtstart      = "19700308T020000"

        d.rrule        = "FREQ=YEARLY;BYMONTH=3;BYDAY=2SU"

      end

      t.standard do |s|

        s.tzoffsetfrom = "-0500"

        s.tzoffsetto   = "-0600"

        s.tzname       = "CST"

        s.dtstart      = "19701101T020000"

        s.rrule        = "FREQ=YEARLY;BYMONTH=11;BYDAY=1SU"

      end

    end

    sessions.each do |session|

      next if session.timeslot.nil?

      cal.event do |e|

        e.summary     = session.title

        e.organizer   = Icalendar::Values::CalAddress.new('', cn: session.presenter_names.join("\\, "))

        e.description = session.summary

        e.dtstart     = session.timeslot.starts_at.to_datetime

        e.dtend       = session.timeslot.ends_at.to_datetime

        e.location    = session.room.name

      end

    end

    render plain: cal.to_ical, :content_type => 'text/calendar'

  end

  def event_timeslots

    @event_timeslots ||= load_event.timeslots

  end

  helper_method :event_timeslots

  private

end