app.rb

        HTTP.basic_auth(auth).persistent(BOOKMOOCH_URI) do |http|
          if isbns_and_image_urls
            
            def post_to_bookmooch(isbn, image_url,title)
                    ...
            end
                  
            pool = ConnectionPool.new(size: 5, timeout: 5) do
              HTTP.persistent("https://bookmooch.com/....")
            end
                  
            
                  
            isbns_and_image_urls.each do |isbn, image_url, title|
              params = {asins: isbn, target: 'wishlist', action: 'add'}
              puts "Params: #{URI.encode_www_form params}"
              puts 'Adding to wishlist with bookmooch api...'
              response = http.get '/api/userbook', params: params

              if response.body.to_s.strip == isbn
                @books_added << [title, image_url]
              else
                @books_failed << [title, image_url]
              end
            end
          else
            r.redirect '/books'
          end
        end