require 'mail'
Mail.defaults do
  delivery_method :smtp, {
    :address   => 'smtp.sendgrid.net',
    :port      => '587',
    :user_name => ENV['SENDGRID_USERNAME'],
    :password  => ENV['SENDGRID_PASSWORD'],
    :authentication => 'plain',
    :enable_starttls_auto => true,
    :domain    => ENV['SENDGRID_DOMAIN']
  }
end

module Rack
  class Emailer
    def initialize(app)
      @app = app
    end

    def call(env)
      request = Rack::Request.new(env)
      if request.path == '/send' && request.post?
        deliver_mail(request.params)
        return [301, {'Location' => request.base_url, 'Content-Type' => 'text/html'}, ['']]
      end
      @app.call(env)
    end


    def deliver_mail(params)
      begin
        from = "#{params['name']} <#{params['email']}>"
        message = "#{params['message']}"
        puts "Sending email"
        Mailer.deliver(from, "Blog contact form", message)
      rescue Exception => e
        puts "Mail send fail #{e}"
      end
    end
  end
end


module Mailer
  def self.deliver(msg_sender, msg_subject, msg_body)
    Mail.deliver do
      to '[email protected]'
      from msg_sender
      subject msg_subject
      body msg_body
    end
  end
end