class Quickbooks::Service::Invoice

def delete(invoice)
  delete_by_query_string(invoice)
end

def fetch_by_id(id, params = {})
  url = "#{url_for_base}/invoice/#{id}?minorversion=#{Quickbooks::Model::Invoice::MINORVERSION}"
  fetch_object(model, url, params)
end

def model
  Quickbooks::Model::Invoice
end

def pdf(invoice)
  url = "#{url_for_resource(model::REST_RESOURCE)}/#{invoice.id}/pdf"
  response = do_http_raw_get(url, {}, {'Accept' => 'application/pdf'})
  response.plain_body
end

def send(invoice, email_address=nil)
  query = email_address.present? ? "?sendTo=#{email_address}" : ""
  url = "#{url_for_resource(model::REST_RESOURCE)}/#{invoice.id}/send#{query}"
  response = do_http_post(url, "", {}, { 'Content-Type' => 'application/octet-stream' })
  if response.code.to_i == 200
    model.from_xml(parse_singular_entity_response(model, response.plain_body))
  else
    nil
  end
end

def url_for_query(query = nil, start_position = 1, max_results = 20, options = {})
  url = super(query, start_position, max_results, options)
  "#{url}&minorversion=#{Quickbooks::Model::Invoice::MINORVERSION}"
end

def url_for_resource(resource)
  url = super(resource)
end

def void(invoice, options = {})
  url = "#{url_for_resource(model::REST_RESOURCE)}?operation=void"
  xml = invoice.to_xml_ns(options)
  response = do_http_post(url, valid_xml_document(xml))
  if response.code.to_i == 200
    model.from_xml(parse_singular_entity_response(model, response.plain_body))
  else
    false
  end
end