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# A class responsible for building PromotionCodes
class ::Spree::PromotionCode::CodeBuilder
attr_reader :promotion, :num_codes, :base_code
class_attribute :random_code_length
self.random_code_length = 6
# Requres a +promotion+, +base_code+ and +num_codes+
#
# +promotion+ Must be a Spree::Promotion.
# +base_code+ Must be a String.
# +num_codes+ Must be a positive integer greater than zero.
def initialize(promotion, base_code, num_codes)
@base_code = base_code
@num_codes = num_codes
@promotion = promotion
end
# Builds and returns an array of Spree::PromotionCode's
def build_promotion_codes
codes.map do |code|
promotion.codes.build(value: code)
end
end
private
def codes
if num_codes > 1
generate_random_codes
else
[base_code]
end
end
def generate_random_codes
valid_codes = Set.new
while valid_codes.size < num_codes
new_codes = Array.new(num_codes) { generate_random_code }.to_set
valid_codes += get_unique_codes(new_codes)
end
valid_codes.to_a.take(num_codes)
end
def generate_random_code
suffix = Array.new(self.class.random_code_length) do
sample_characters.sample
end.join
"#{@base_code}_#{suffix}"
end
def sample_characters
@sample_characters ||= ('a'..'z').to_a
end
def get_unique_codes(code_set)
code_set - Spree::PromotionCode.where(value: code_set.to_a).pluck(:value)
end
end
Version data entries
21 entries across 21 versions & 1 rubygems