module Strikeiron

# File lib/strikeiron2.rb, line 20
def client
  @@client ||= nil
  return @@client if !@@client.nil?
  raise Strikeiron::ConfigurationException, 'You must set up your configuration before making requests' if configuration.nil?
  @@client = Client.new configuration
end

# File lib/strikeiron2.rb, line 15
def configure
  self.configuration ||= Configuration.new
  yield configuration
end

# File lib/strikeiron2.rb, line 62
def remaining_hits
  response = self.client.request :get_remaining_hits
  response.body[:si_subscription_info][:remaining_hits].to_i
end

# File lib/strikeiron2.rb, line 27
def sales_tax(options={})
  options = options.inject({}) { |hsh,(k,v)| hsh[k.to_sym] = v; hsh }
  required_options = [:from, :to, :tax_values]
  
  # Raise an error if a required option is not defined
  raise ArgumentError, "You must pass all required options: #{required_options}" if (required_options - options.keys).length > 0
  
  data = {
    'ShipFrom' => options[:from].to_soap,
    'ShipTo' => options[:to].to_soap,
    'TaxValueRequests' => { 'TaxValueRequest' => options[:tax_values].collect(&:to_soap) }
  }
  
  response = self.client.request :get_sales_tax_value, data
  response_code = response.body[:get_sales_tax_value_response][:get_sales_tax_value_result][:service_status][:status_nbr].to_i
  
  case response_code
  when 401 then raise Strikeiron::AddressException, 'Invalid From address.'
  when 402 then raise Strikeiron::AddressException, 'Invalid To address.'
  when 403 then raise Strikeiron::TaxCategoryException, 'Invalid Taxability category.'
  when 500 then raise Strikeiron::InternalError, 'Internal Strikeiron server error.'
  end
  
  TaxResult.from_soap(response.body[:get_sales_tax_value_response][:get_sales_tax_value_result][:service_result])
end

# File lib/strikeiron2.rb, line 53
def tax_categories
  response = self.client.request :get_sales_tax_categories
  
  # Return an empty array if the response was not successful
  return [] if response.body[:get_sales_tax_categories_response][:get_sales_tax_categories_result][:service_status][:status_nbr].to_i != 200
  
  response.body[:get_sales_tax_categories_response][:get_sales_tax_categories_result][:service_result][:sales_tax_category]
end