module Slack::Web::Faraday::Connection

def connection
  options = {
    headers: { 'Accept' => 'application/json; charset=utf-8', 'User-Agent' => user_agent },
    url: endpoint
  }
  ::Faraday::Connection.new(options) do |connection|
    connection.use ::Faraday::Request::Multipart
    connection.use ::Faraday::Request::UrlEncoded
    connection.use ::Faraday::Response::RaiseError
    connection.use ::Slack::Web::Faraday::Response::RaiseError
    connection.use ::FaradayMiddleware::ParseJson
    connection.adapter(::Faraday.default_adapter)
  end
end