blomming_buy_api_sample.rb

require 'net/http'
require 'json'

auth_uri = URI('https://api.blomming.com/v1/oauth/token')
json_uri = URI('https://api.blomming.com/v1/categories/158/items')

params = {
  :grant_type => 'client_credentials',
  :client_id => '<CLIENT_ID>',
  :client_secret => '<CLIENT_SECRET>'
}

Net::HTTP.start(auth_uri.hostname, auth_uri.port, :use_ssl => true) do |http|
  puts 'Authorizing...'

  auth_req = Net::HTTP::Post.new(auth_uri.path)
  auth_req.set_form_data(params)
  res = http.request(auth_req)
  access_token = JSON.parse(res.body)['access_token']

  puts "Authorized with token #{access_token}"

  puts "Get json"

  json_req = Net::HTTP::Get.new(json_uri.path)
  json_req['Authorization'] = "Bearer #{access_token}"

  res = http.request(json_req)
  puts res.body
end