Sha256: 16c212c10e309a5ceca011124c94ff70e39c54332ce07994e60d51db20ddb97e
Contents?: true
Size: 1.5 KB
Versions: 9
Compression:
Stored size: 1.5 KB
Contents
require 'httparty'
require 'open-uri'
module Momm
module Feeds
class ECB
FETCHING_URL = "http://www.ecb.europa.eu/stats/eurofxref/eurofxref-hist-90d.xml".freeze
#Hard coded for good
CURRENCIES = %w{USD JPY BGN CZK DKK GBP HUF LTL PLN RON SEK CHF
NOK HRK RUB TRY AUD BRL CAD CNY HKD IDR ILS INR KRW
MXN MYR NZD PHP SGD THB ZAR}.freeze
class << self
# Eager loading the instance of ECB
#
# == Returns
# self
#
def instance
@instance ||= self.send :new
end
end
# should be a singleton class
private_class_method :new
# Parse the XML data by Nokogiri
# == Returns
# Nokogiri Object
#
def parsed_content
# @TODO Refactoring Bad patterns
HTTParty.get(fetching_url, format: :xml)['Envelope']['Cube']['Cube']
end
# convert the nokogiri parsed data to array
#
# == Returns
# looks like [{date: Date.now, currency: :CNY, rate: 1.23} ...]
#
def currency_rates
parsed_content.map do |content|
date = Date.parse(content["time"])
cubes = content["Cube"]
cubes.map do |cube|
{
date: date,
currency: cube["currency"].to_sym,
rate: cube["rate"].to_f
}
end
end.flatten
end
def fetching_url
FETCHING_URL
end
def currencies
CURRENCIES
end
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems