module FoxyCart

# File lib/foxycart.rb, line 26
def self.api_url(url='')
  @api_base + url
end

# File lib/foxycart.rb, line 37
def self.request(method, url, api_key, params={}, headers={})
  unless api_key ||= @api_key
    raise AuthenticationError.new('No API key provided. ' +
      'Set your API key using "FoxyCart.api_key = <API-KEY>".')
  end

  url = api_url(url)

  case method.to_s.downcase.to_sym
  when :get, :head, :delete
    # Make params into GET parameters
    url += "#{URI.parse(url).query ? '&' : '?'}#{uri_encode(params)}" if params && params.any?
    payload = nil
  else
    payload = uri_encode(params)
  end

  # post(url, data: post_data, headers: FoxyCart.headers)
  request_opts = {
    :headers => request_headers(api_key).update(headers),
    :method => method, 
    :open_timeout => 30,
    :payload => payload, 
    :url => url, 
    :timeout => 80
  }

  execute_request(request_opts)
end

# File lib/foxycart.rb, line 30
def self.request_headers(api_key)
  {
    'FOXYCART-API-VERSION' => '1', 
    'Authorization' => "Bearer #{api_key}",
  }
end

# File lib/foxycart.rb, line 74
def self.execute_request(opts)
  RestClient::Request.execute(opts)
end

# File lib/foxycart.rb, line 69
def self.uri_encode(params)
  Util.flatten_params(params).
    map { |k,v| "#{k}=#{Util.url_encode(v)}" }.join('&')
end