skroutz_test.rb

require 'oauth2'
require 'net/http'
require 'json'

CID = 'my_cid'
PAS = 'my_pass'
RDR = 'rdr_url'

# OAuth2 client object
def client
  client = OAuth2::Client.new(CID, PAS, site: 'https://skroutz.gr', authorize_url: "/oauth2/authorizations/new",token_url: "/oauth2/token", user_agent: 'pritory')
end

# Request token
def get_token
  begin
    t = client.client_credentials.get_token(scope: 'public') # public is required here
  rescue OAuth2::Error => e
    e.response.status == 404 ? "Not Found: 404" : e
  end
end

# Skroutz search product
def skroutz_search_product
  begin
    access_token = get_token

    p access_token.get('https://api.skroutz.gr/products/12176638', headers: { 'Accept' => 'application/vnd.skroutz+json; version=3' })

    # p JSON.parse(access_token.get("/categories/40/skus").body)
  rescue OAuth2::Error => e
    # puts "\nNot Found: 404" if e.response.status == 404
    puts "\nResponse headers: #{e.response.headers}"
  end
end

skroutz_search_product