VRFS-1693 resque job to schedule recurring music sessions

db/manifest

@@ -169,3 +169,4 @@ periodic_emails.sql
 remember_extra_scoring_data.sql
 indexing_for_regions.sql
 latency_tester.sql
+scheduled_sessions_next_session_scheduled.sql

db/up/scheduled_sessions_next_session_scheduled.sql

@@ -0,0 +1 @@
+alter table music_sessions add column next_session_scheduled BOOLEAN default null;

ruby/lib/jam_ruby/models/music_session.rb

@@ -62,6 +62,69 @@ module JamRuby
       self.comments.size
     end
 
+    # copies all relevant info for the recurring session
+    def copy
+
+      MusicSession.transaction do
+        # copy base music_session data
+        new_session = MusicSession.new
+        new_session.description = self.description
+        new_session.user_id = self.user_id
+        new_session.band_id = self.band_id
+        new_session.fan_access = self.fan_access
+        # TODO: confirm this logic
+        new_session.scheduled_start = self.scheduled_start + self.scheduled_duration
+        new_session.scheduled_duration = self.scheduled_duration
+        new_session.musician_access = self.musician_access
+        new_session.approval_required = self.approval_required
+        new_session.fan_chat = self.fan_chat
+        new_session.genre_id = self.genre_id
+        new_session.legal_policy = self.legal_policy
+        new_session.language = self.language
+        new_session.name = self.name
+        new_session.recurring_mode = self.recurring_mode
+        new_session.timezone = self.timezone
+        new_session.open_rsvps = self.open_rsvps
+        new_session.save
+      
+        # copy rsvp_slots
+        RsvpSlot.find_each(:conditions => "music_session_id = '#{self.id}'") do |slot|
+          new_slot = RsvpSlot.new
+          new_slot.instrument_id = slot.instrument_id
+          new_slot.proficiency_level = slot.proficiency_level
+          new_slot.music_session_id = new_session.id
+          new_slot.save
+        end
+
+        # copy music_notations
+        MusicNotation.find_each(:conditions => "music_session_id = '#{self.id}'") do |notation|
+          new_notation = MusicNotation.new
+          new_notation.user_id = notation.user_id
+          new_notation.music_session_id = new_session.id
+          new_notation.file_url = notation.file_url
+          new_notation.size = notation.size
+          new_notation.save
+        end
+
+        # copy invitations
+        Invitation.find_each(:conditions => "music_session_id = '#{self.id}'") do |invitation|
+          new_invitation = Invitation.new
+          new_invitation.sender_id = invitation.sender_id
+          new_invitation.receiver_id = invitation.receiver_id
+          new_invitation.music_session_id = new_session.id
+          new_invitation.save
+
+          user = User.find(new_invitation.receiver_id)
+          Notification.send_scheduled_session_invitation(new_session, user)
+        end
+
+        # mark the next session as scheduled
+        self.next_session_scheduled = true
+        self.save
+      end
+
+    end
+
     def grouped_tracks
       tracks = []
       self.music_session_user_histories.each do |msuh|

ruby/lib/jam_ruby/resque/scheduled/music_session_scheduler.rb

@@ -0,0 +1,39 @@
+require 'json'
+require 'resque'
+require 'resque-retry'
+require 'net/http'
+require 'digest/md5'
+
+module JamRuby
+
+  class MusicSessionScheduler
+    extend Resque::Plugins::LonelyJob
+
+    @queue = :music_session_scheduler
+
+    @@log = Logging.logger[MusicSessionScheduler]
+
+    def self.lock_timeout
+      120
+    end
+
+    def self.perform
+      @@log.debug("waking up")
+
+      JamWebEventMachine.run_wait_stop do
+        MusicSessionScheduler.new.run
+      end
+
+      @@log.debug("done")
+    end
+
+    def run
+      # get all weekly sessions that have ended in the last 15 minutes
+      criteria = "recurring_mode = 'weekly' AND session_removed_at is not null AND next_session_scheduled = false"
+      MusicSession.find_each(:conditions => criteria) do |music_session|
+        music_session.copy
+      end
+    end
+
+  end
+end

web/config/scheduler.yml

@@ -39,3 +39,7 @@ NewMusicianEmailer:
   class: "JamRuby::NewMusicianEmailer"
   description: "Sends weekly emails of new users with good latency"
 
+MusicSessionScheduler:
+  cron: "0 */5 0 * *"
+  class: "JamRuby::MusicSessionScheduler"
+  description: "Schedules music sessions that are marked as recurring"