Class: Centra::OrderStats

Inherits:
Object
  • Object
show all
Defined in:
lib/centra/order_stats.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(centra_data, order_filter = OrderFilter.new) ⇒ OrderStats

Returns a new instance of OrderStats.



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# File 'lib/centra/order_stats.rb', line 12

def initialize(centra_data, order_filter = OrderFilter.new)
  @data = centra_data
  @order_filter = order_filter
  @result = nil
end

Instance Attribute Details

#order_filter ⇒ Object (readonly)

Returns the value of attribute order_filter.



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# File 'lib/centra/order_stats.rb', line 10

def order_filter
  @order_filter
end

#result ⇒ Object (readonly)

Returns the value of attribute result.



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# File 'lib/centra/order_stats.rb', line 10

def result
  @result
end

Class Method Details

.calculate(centra_data) ⇒ Object 



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# File 'lib/centra/order_stats.rb', line 6

def self.calculate(centra_data)
  new(centra_data).calculate
end

Instance Method Details

#calculate ⇒ Object 



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# File 'lib/centra/order_stats.rb', line 18

def calculate
  return self if @result

  orders_per_email = Hash.new(0)
  currencies = Set.new
  payment_method_codes = Set.new
  billing_countries = Set.new
  total_revenue = 0
  total_pcs = 0
  first_order_date = Time.new(3000, 1, 1)
  last_order_date = Time.new(1, 1, 1)
  total_orders_in_stats = 0

  @data.each_order do |order|
    next unless order_filter.allow?(order)
    total_orders_in_stats += 1

    email = order.delivery_email
    orders_per_email[email] += 1

    currencies << order.currency
    payment_method_codes << order.payment_method_code
    billing_countries << order.billing_country

    order_date = order.order_date
    first_order_date = order_date if first_order_date > order_date
    last_order_date = order_date if last_order_date < order_date

    total_revenue += order.total_order_value_sek
    total_pcs += order.pcs
  end

  total_orders = @data.rows.length
  total_unique_emails = orders_per_email.keys.length
  total_currencies = currencies.length

  @result = {
    orders_per_email: orders_per_email,
    currencies: currencies,
    payment_method_codes: payment_method_codes,
    billing_countries: billing_countries,

    first_order_date: first_order_date,
    last_order_date: last_order_date,

    total_revenue: total_revenue,
    total_pcs: total_pcs,
    total_orders: total_orders,
    total_orders_in_stats: total_orders_in_stats,
    total_unique_emails: total_unique_emails,
    total_currencies: total_currencies,

    avg_order_value: total_revenue / total_orders.to_f,
    avg_value_per_email: total_revenue / total_unique_emails.to_f,
    avg_order_per_email: total_orders / total_unique_emails.to_f,
    avg_pcs_per_order: total_pcs / total_orders.to_f,
  }
  self
end