skype.rb

require 'httparty'
require 'jwt'
require 'digest'
require 'securerandom'
require 'json'

class Skype
    
    def initialize
        @key = 'b97dfb72-1504-fadd-1b04-05efc186aaeb'
        @secret = '39941866-f2dc-f1c1-9882-2edd517bed0d'
        @guid = SecureRandom.uuid
        @time = Time.now.to_i
    end

    def payload
       {}
    end

    def generate_jwt(content)
        time = @time
        data = {
            jti: @guid,
            iss: @key,
            iat: time,
            sub: Digest::SHA256.hexdigest(content),
            exp: time + 10
        }
        jwt = JWT.encode data, @secret
        return jwt
    end

    def call
        headers = {
            'Content-Type': 'application/x-www-form-urlencoded',
            'Authorization': 'Bearer ' + generate_jwt(payload.to_json)
        }
        body = payload.to_json
        url = 'https://interviews.skype.com/api/interviews'
        response = HTTParty.post(url, {body: body, headers: headers})
    end
    
end


skype  = Skype.new
res = skype.call

puts res