[feat]Splashpage will display happening next event if no event is happening now

app/controllers/conferences_controller.rb

@@ -61,11 +61,7 @@ class ConferencesController < ApplicationController
         @booths = @conference.confirmed_booths.order('title')
       end
       if splashpage.include_happening_now
-        events_schedules_list = get_happening_now_events_schedules(@conference)
-        @events_schedules_limit = EVENTS_PER_PAGE
-        @events_schedules_length = events_schedules_list.length
-        @pagy, @events_schedules = pagy_array(events_schedules_list, items: @events_schedules_limit, link_extra: 'data-remote="true"')
-        @happening_now_url = happening_now_conference_schedule_path(conference_id: @conference.short_title, format: :json)
+        load_happening_now
       end
     end
     if splashpage.include_registrations || splashpage.include_tickets
@@ -151,4 +147,17 @@ class ConferencesController < ApplicationController
   def current_user_has_unpaid_tickets?
     current_user && current_user_tickets.unpaid.any?
   end
+
+  def load_happening_now
+    events_schedules_list = get_happening_now_events_schedules(@conference)
+    @is_happening_next = false
+    if events_schedules_list.empty?
+      events_schedules_list = get_happening_next_events_schedules(@conference)
+      @is_happening_next = true
+    end
+    @events_schedules_limit = EVENTS_PER_PAGE
+    @events_schedules_length = events_schedules_list.length
+    @pagy, @events_schedules = pagy_array(events_schedules_list, items: @events_schedules_limit, link_extra: 'data-remote="true"')
+    @happening_now_url = happening_now_conference_schedule_path(conference_id: @conference.short_title, format: :json)
+  end
 end

app/helpers/conference_helper.rb

@@ -85,4 +85,20 @@ module ConferenceHelper
     events_schedules ||= []
     events_schedules
   end
+
+  def get_happening_next_events_schedules(conference)
+    events_schedules = conference.program.selected_event_schedules(
+      includes: [:room, { event: %i[track event_type speakers submitter] }]
+    ).select(&:happening_next?)
+
+    if events_schedules.empty?
+      return []
+    end
+
+    # events_schedules have been sorted by start_time in selected_event_schedules
+    happening_next_time = events_schedules[0].start_time
+    events_schedules = events_schedules.select { |s| s.start_time == happening_next_time }
+
+    events_schedules
+  end
 end

app/models/event_schedule.rb

@@ -70,6 +70,14 @@ class EventSchedule < ApplicationRecord
     event_time_range.overlaps?(now_range)
   end
 
+  def happening_next?
+    # TODO: Save start_time with local timezone info when making an event schedule
+    in_tz_start = start_time.in_time_zone(timezone)
+    in_tz_start -= in_tz_start.utc_offset
+
+    in_tz_start >= Time.now
+  end
+
   def self.withdrawn_or_canceled_event_schedules(schedule_ids)
     EventSchedule
       .unscoped

app/views/conferences/_about_and_happening_now.haml

@@ -3,7 +3,8 @@
     = render 'happening_now', conference: conference,
       events_schedules: events_schedules, pagy: pagy,
       events_schedules_length: events_schedules_length,
-      events_schedules_limit: events_schedules_limit
+      events_schedules_limit: events_schedules_limit,
+      is_happening_next: is_happening_next
 
 = content_for :about do
   #about

app/views/conferences/_happening_now.haml

@@ -1,7 +1,11 @@
 - if conference.splashpage.include_program && conference.splashpage.include_happening_now
   - if events_schedules.any?
     .row
-      %h2.text-center{ style: 'margin-bottom:30px' } Happening Now
+      %h2.text-center{ style: 'margin-bottom:30px' } 
+        - if is_happening_next
+          Happening Next
+        - else
+          Happening Now
     - events_schedules.each do |event_schedule|
       = render 'schedules/event', conference: conference, event_schedule: event_schedule, event: event_schedule.event, is_brief: true
     - if events_schedules_length > events_schedules_limit

app/views/conferences/show.html.haml

@@ -49,7 +49,8 @@
     = render 'about_and_happening_now', conference: @conference,
       events_schedules: @events_schedules, pagy: @pagy,
       events_schedules_length: @events_schedules_length,
-      events_schedules_limit: @events_schedules_limit
+      events_schedules_limit: @events_schedules_limit,
+      is_happening_next: @is_happening_next
 
   -# calls for content, or program
   - if @conference.splashpage.include_cfp

lib/tasks/demo_data_for_development.rake

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 require 'webmock'
 
 namespace :data do