Better design for room URLs

app/helpers/events_helper.rb

@@ -173,6 +173,24 @@ module EventsHelper
     )
   end
 
+  def join_event_link(event, current_user)
+    return unless event.url.present? && current_user
+
+    conference = event.conference
+    is_today = event.time&.today?
+    if current_user.roles.where(id: conference.roles).any?
+      # Show Pre-Event links for any memeber of the conference team.
+      link_to("Join Live Event #{'(Pre-Event)' unless is_today}",
+                      event.url, target: '_blank')
+    elsif current_user.registered_to_event?(conference)
+      if is_today
+        link_to('Join Live Event', event.url, target: '_blank')
+      else
+        link_to('Live Event Link Coming Soon', '#')
+      end
+    end
+  end
+
   private
 
   def active_dropdown(selection, options)

app/models/event.rb

@@ -31,6 +31,8 @@ class Event < ApplicationRecord
   belongs_to :track
   belongs_to :difficulty_level
   belongs_to :program
+  belongs_to :room
+  delegate :url, to: :room, allow_nil: true
 
   accepts_nested_attributes_for :event_users, allow_destroy: true
   accepts_nested_attributes_for :speakers, allow_destroy: true

app/views/proposals/show.html.haml

@@ -16,9 +16,8 @@
           %br
           %small
             = @event.subtitle
-      - if @event.room&.url && @conference.user_registered?(current_user)
-        %h3
-          = link_to('Join Event', @event.room.url, target: '_blank')
+      %h3
+        = join_event_link(@event, current_user)
     .col-md-2
       %p{style: "margin-top: 20px"}
         - if can?(:update, @event) && @event.require_registration?

app/views/schedules/_event.html.haml

@@ -17,11 +17,11 @@
     %h4
       - if(event.speakers.any?)
         presented by #{event.speaker_names}
-    - if event.room&.url && @conference.user_registered?(current_user)
-      %p
-        = link_to('Join Event', event.room.url, target: '_blank')
+    %h5
+      = join_event_link(event, current_user)
     %p
       = markdown(truncate(event.abstract, length: 400))
+      -# TODO: More informative text or aria-label.
       = link_to 'more', conference_program_proposal_path(@conference.short_title, event.id) if event.abstract.length > 400
     - if event_schedule.present?
       %span.track