class Slack::Notifier::Util::HTTPClient

def call
  http_obj.request(request_obj).tap do |response|
    unless response.is_a?(Net::HTTPSuccess)
      raise Slack::Notifier::APIError, <<-MSG
k API returned an error: #{response.body} (HTTP Code #{response.code})
e "Handling Errors" section on https://api.slack.com/incoming-webhooks for more information
    end
  end
end

def http_obj
  http = Net::HTTP.new uri.host, uri.port
  http.use_ssl = (uri.scheme == "https")
  http_options.each do |opt, val|
    if http.respond_to? "#{opt}="
      http.send "#{opt}=", val
    else
      warn "Net::HTTP doesn't respond to `#{opt}=`, ignoring that option"
    end
  end
  http
end

def initialize uri, params
  @uri          = uri
  @http_options = params.delete(:http_options) || {}
  @params       = params
end

def post uri, params
  HTTPClient.new(uri, params).call
end

def request_obj
  req = Net::HTTP::Post.new uri.request_uri
  req.set_form_data params
  req
end