mandrill_endpoint.rb

Dir['./lib/**/*.rb'].each(&method(:require))

class MandrillEndpoint < EndpointBase::Sinatra::Base
  set :logging, true

  Honeybadger.configure do |config|
    config.api_key = ENV['HONEYBADGER_KEY']
    config.environment_name = ENV['RACK_ENV']
  end

  post '/send_email' do
    # convert variables into Mandrill array / hash format.
    #
    unless (@payload.key? 'email')
      add_value :payload_inspect, @payload.inspect
      result 500, 'No Email Key found in Payload'
    end

    global_merge_vars = @payload['email'].fetch('variables', []).map do |name, value|
      { 'name' => name, 'content' => value }
    end

    template       = @payload['email']['template']
    merge_language = @payload['email']['merge_language']
    to_addr        = @payload['email']['to']
    from_addr      = @payload['email']['sender_email'] || @payload['email']['from']
    from_name      = @payload['email']['sender_name'] || from_addr
    subject        = @payload['email']['subject']
    bcc_address    = @payload['email']['bcc_address'] || ''
    send_at        = @payload['email']['send_at'] || ''

    # create Mandrill request
    #
    request_body = {
      key: @config['mandrill_api_key'],
      template_name: template,
      message: {
        from_email: from_addr,
        from_name: from_name,
        to: to_addr.to_s.split(',').map { |email| { email: email } },
        bcc_address: bcc_address,
        subject: subject,
        global_merge_vars: global_merge_vars
      },
      send_at: send_at,
      template_content: [ name: 'User 1', content: 'Content 1' ]
    }

    # merge_language is optional
    request_body[:message][:merge_language] = merge_language if merge_language.present?

    # send request to Mandrill API
    #
    response = HTTParty.post('https://mandrillapp.com/api/1.0/messages/send-template.json',
                             body: request_body.to_json,
                             timeout: 240,
                             headers: { 'Content-Type'   => 'application/json' })

    #ugly because it could be a hash or an array
    #https://mandrillapp.com/api/docs/messages.html
    response = [response.parsed_response].flatten.first
    reason = response['reject_reason'] || response['message'] || response.inspect

    if %w{sent queued}.include?(response['status'])
      set_summary "Sent '#{subject}' email to #{to_addr}"
      add_value :mandrill_message_id, response["_id"]
      process_result 200
    else
      set_summary "Failed to send '#{subject}' email to #{to_addr}. #{reason}"
      process_result 500
    end
  end
end