Class: Statistics::RestaurantWorker

Inherits:
ApplicationWorker
  • Object
show all
Defined in:
app/workers/statistics/restaurant_worker.rb

Overview

typed: ignore frozen_string_literal: true

Instance Method Summary collapse

Instance Method Details

#perform ⇒ Object 



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# File 'app/workers/statistics/restaurant_worker.rb', line 17

def perform
  ::Restaurant.find_each do |restaurant|
    update_reservations_count restaurant, 3
  rescue StandardError => e
    APMErrorHandler.report(e, restaurant_id: restaurant.id)
  end
  update_top_restaurants
end

#update_reservations_count(restaurant, days_ago = 30) ⇒ Object

update total reservations based on few X days ago



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# File 'app/workers/statistics/restaurant_worker.rb', line 7

def update_reservations_count(restaurant, days_ago = 30)
  date = days_ago.days.ago.to_date
  # Use ClickHouse replica for reading data, but maintain exact same query structure
  clickhouse_restaurant = restaurant.clickhouse_replica
  return unless clickhouse_restaurant

  count = clickhouse_restaurant.reservations.where('created_at >= ?', date).exclude_temporary.count
  restaurant.update reservations_count: count
end

#update_top_restaurants ⇒ Object 



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# File 'app/workers/statistics/restaurant_worker.rb', line 26

def update_top_restaurants
  today = Date.today
  revenue_data = HhClickHouseRestaurant.select('restaurants.id, SUM(reservation_properties.revenue) as revenue').
    joins(reservations: :property).
    where('restaurants.active = ? AND expiry_date >= ?', 1, today).
    where('reservations.created_at >= ? AND reservations.created_at <= ?', today - 3.days, today).
    group('restaurants.id').
    order('revenue DESC')

  # Extract restaurant IDs and their corresponding top_order values
  restaurant_updates = revenue_data.each_with_index.map do |result, index|
    { id: result.id, top_order: index }
  end

  # True batch update using a single SQL statement with CASE
  # This is secure because we're using parameterized values, not string interpolation
  if restaurant_updates.any?
    restaurant_ids = restaurant_updates.pluck(:id)

    # Build parameterized CASE statement - secure because values are bound parameters
    case_conditions = restaurant_updates.map.with_index do |_update, _index|
      'WHEN id = ? THEN ?'
    end.join(' ')

    # Flatten the parameters: [id1, top_order1, id2, top_order2, ...]
    case_params = restaurant_updates.flat_map { |update| [update[:id], update[:top_order]] }

    # Single secure SQL update with bound parameters
    Restaurant.where(id: restaurant_ids).update_all(
      ["top_order = CASE #{case_conditions} END"] + case_params,
    )
  end
end