sysmocom Deutsche Post DHL Shipping Calculator
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# AGPLv3 sysmocom s.f.m.c. GmbH
module Spree
class Calculator::SysmocomScBaseCalculator < Calculator
def total_value_no_tax(o)
item_total = o.line_items.map(&:amount).sum
item_total
end
def total_weight(o)
weight = 0
o.line_items.each do |li|
weight += li.quantity * li.variant.weight
end
return weight
end
def extract_iso_code(o)
if o.kind_of?(Spree::Shipment)
return o.address.country.iso
end
return o.ship_address.country.iso
end
def extract_dst_dadr(o)
if o.kind_of?(Spree::Shipment)
return o.address
end
return o.ship_address
end
def cbrt(x)
return x ** (1.0/3)
end
def estimate_dimensions(weight_kg, density_kg_per_dm3)
volume_dm3 = weight_kg.to_f / density_kg_per_dm3.to_f
volume_cm3 = 1000.0 * volume_dm3
# assuming l=3x, w=2x, h1x -> x=6
x = cbrt(volume_cm3 / 6)
return 3.0 * x, 2.0 * x, 1.0 * x
end
def sc_compute(carrier, service, object)
# This could be more than an order but not right now
weight = total_weight(object)
dst = extract_dst_addr(object)
length, width, height = estimate_dimensions(weight, 0.5)
quote = Shipcloud::ShipmentQuote.create(
carrier: carrier,
service: service,
to: {
street: dst.address1,
zip_code: dst.zipcode,
city: dst.city,
country: dst.country.iso,
},
from: {
street: "Alt-Moabit",
street_no: "93",
zip_code: "10559",
city: "Berlin",
country: "DE",
},
package: {
weight: weight,
width: width,
length: length,
height: height,
},
)
return quote.price
end
def available?(object)
# use 'compute' to determine availability
begin
price = sc_compute(object)
rescue =>
return false
else
return true
end
end
end
class Calculator::SysmocomScUpsStdCalculator < SysmocomScBaseCalculator
def self.description
I18n.t(:sysmocom_ups_standard)
end
def compute(object)
return sc_compute('ups', 'standard')
end
end
class Calculator::SysmocomScUpsExpressCalculator < SysmocomScBaseCalculator
def self.description
I18n.t(:sysmocom_ups_express)
end
def compute(object)
return sc_compute('ups', 'one_day')
end
end
class Calculator::SysmocomScUpsExpeditedCalculator < SysmocomScBaseCalculator
def self.description
I18n.t(:sysmocom_ups_expedited)
end
def compute(object)
return sc_compute('ups', 'ups_expedited')
end
end
end