Compute ticket statistics

And exclude admin/ConferencesController from rubocop_todo.yml

app/models/conference.rb

@@ -184,6 +184,59 @@ class Conference < ActiveRecord::Base
     result
   end
 
+  ##
+  # Returns an array with the summarized ticket sales per week.
+  #
+  # ====Returns
+  #  * +Array+ -> e.g. [0, 3, 3, 5] -> first week 0, second week 3 tickets sold
+  def get_tickets_sold_per_week
+    result = []
+
+    if tickets && ticket_purchases && registration_period
+      tickets_sold = ticket_purchases.paid.group(:week).sum(:quantity)
+      start_week = get_registration_start_week
+      weeks = registration_weeks
+      result = calculate_items_per_week(start_week, weeks, tickets_sold)
+    end
+    result
+  end
+
+  ##
+  # Returns an hash with ticket sales by ticket title
+  # per week.
+  #
+  # ====Returns
+  #  * +Array+ -> e.g. 'Free Access' => [0, 3, 3, 5]  -> first week 0 tickets sold, second week 3 tickets sold.
+  def get_tickets_data
+    result = {}
+    if tickets && ticket_purchases && registration_period
+      tickets_per_ticket_id_and_week = ticket_purchases.paid.group(:ticket_id, :week).sum(:quantity)
+
+      start_week = get_registration_start_week
+      weeks = registration_weeks
+
+      tickets_by_id_per_week = {}
+
+      tickets.each do |ticket|
+        tickets_by_id_per_week[ticket.id] = {}
+        (start_week...(start_week + weeks)).each do |week|
+          tickets_by_id_per_week[ticket.id][week] = 0
+        end
+      end
+
+      tickets_per_ticket_id_and_week.each do |ticket_week, value|
+        tickets_by_id_per_week[ticket_week[0]][ticket_week[1]] = value
+      end
+
+      tickets_by_id_per_week.each do |ticket, values|
+        result[Ticket.find(ticket).title] = pad_array_left_not_kumulative(start_week, values)
+      end
+
+      result['Weeks'] = weeks > 0 ? (1..weeks).to_a : 0
+    end
+    result
+  end
+
   ##
   # Calculates how many weeks the registration is.
   #
@@ -396,6 +449,46 @@ class Conference < ActiveRecord::Base
     calculate_user_distribution_hash(active_user, unconfirmed_user, dead_user)
   end
 
+  ##
+  # Returns a hash with per ticket sales => { "Title" => { value: number of tickets sold,
+  # color: generated from the title using a hash function }, ...}
+  #
+  # ====Returns
+  # * +hash+ -> hash
+  def tickets_sold_distribution
+    result = {}
+
+    if tickets && ticket_purchases
+      tickets.each do |ticket|
+        result[ticket.title] = {
+          'value' => ApplicationController.helpers.humanized_money(ticket.tickets_sold).delete(',').to_i,
+          'color' => "\##{Digest::MD5.hexdigest(ticket.title)[0..5]}"
+        }
+      end
+    end
+    result
+  end
+
+  ##
+  # Returns a hash with per ticket turnover => { "Title" => { value: ticket turnover,
+  # color: generated from the title using a hash function }, ...}
+  #
+  # ====Returns
+  # * +hash+ -> hash
+  def tickets_turnover_distribution
+    result = {}
+
+    if tickets && ticket_purchases
+      tickets.each do |ticket|
+        result[ticket.title] = {
+          'value' => ApplicationController.helpers.humanized_money(ticket.tickets_turnover).delete(',').to_i,
+          'color' => "\##{Digest::MD5.hexdigest(ticket.title)[0..5]}"
+        }
+      end
+    end
+    result
+  end
+
   ##
   # Calculates the overall program minutes
   #