An example API to test offline queuing.

example.rb

require 'sinatra'
require 'sinatra/json'

items = { "234" => { "name" => "Pokemon", "isLiked" => false, "id" => "234" } }

get '/' do
  hash = { "data" => items.values }
  json hash
end

put '/' do
  item = items[params[:item_id]]
  item["isLiked"] = !item["isLiked"] 

  puts items

  200
end