accodeing/fortnox-api

#!/usr/bin/env ruby
# frozen_string_literal: true

require 'base64'
require 'dotenv'
require 'httparty'

DOTENV_FILE_NAME = '.env'
OAUTH_ENDPOINT = 'https://apps.fortnox.se/oauth-v1'

Dotenv.load(DOTENV_FILE_NAME)

ERROR_MESSAGE = 'Missing environment variabel %s! Exiting.'
CLIENT_ID = ENV.fetch('FORTNOX_API_CLIENT_ID') { |key| raise(format(ERROR_MESSAGE, key)) }
CLIENT_SECRET = ENV.fetch('FORTNOX_API_CLIENT_SECRET') { |key| raise(format(ERROR_MESSAGE, key)) }
REDIRECT_URI = ENV.fetch('FORTNOX_API_REDIRECT_URI') { |key| raise(format(ERROR_MESSAGE, key)) }
SCOPES = ENV.fetch('FORTNOX_API_SCOPES') { |key| raise(format(ERROR_MESSAGE, key)) }
CREDENTIALS = Base64.encode64("#{CLIENT_ID}:#{CLIENT_SECRET}").to_s

AUTH_PARAMS =
  "client_id=#{CGI.escape(CLIENT_ID)}" \
  "&redirect_uri=#{CGI.escape(REDIRECT_URI)}" \
  "&scope=#{CGI.escape(SCOPES)}" \
  '&state=not-used' \
  '&access_type=offline' \
  '&response_type=code' \
  '&account_type=service'

AUTHORIZE_URL = "#{OAUTH_ENDPOINT}/auth?#{AUTH_PARAMS}"

print "Let's get you an access token and a refresh token for Fortnox API."
print "\nVisit the URL below, login with the account you want to authorize and grant the integration permission." \
      'Then copy the "code" from the URL parameters.'
print "\n#{AUTHORIZE_URL}"

print "\nEnter authorization code: "
authorization_code = $stdin.gets.chomp

headers = {
  Authorization: "Basic #{CREDENTIALS}",
  'Content-type' => 'application/x-www-form-urlencoded'
}

body = {
  grant_type: 'authorization_code',
  code: authorization_code,
  redirect_uri: REDIRECT_URI
}

response = HTTParty.post("#{OAUTH_ENDPOINT}/token", headers: headers, body: body)

if response.code != 200
  print "\nSomething went wrong."
  print "\nResponse code #{response.code}"
  print "\nResponse message: #{response.message}"
  print "\nResponse body: #{response.body}"
  print "\n"
  exit
end

access_token = response.parsed_response['access_token']
refresh_token = response.parsed_response['refresh_token']

print "There you go, here's your access token: #{access_token}"
print "\nAnd here's your refresh token: #{refresh_token}"
print "\nYour access token expires in #{response.parsed_response['expires_in']} seconds"
print "\nRequested scopes: #{response.parsed_response['scope']}"
print "\n"

print "Write tokens to #{DOTENV_FILE_NAME} [y/n]? "
store_tokens_in_env = $stdin.gets.chomp

exit unless store_tokens_in_env.casecmp('y').zero?

text = File.read(DOTENV_FILE_NAME)
updated_text = text
               .gsub(/FORTNOX_API_ACCESS_TOKEN=.*$/, "FORTNOX_API_ACCESS_TOKEN=#{access_token}")
               .gsub(/FORTNOX_API_REFRESH_TOKEN=.*$/, "FORTNOX_API_REFRESH_TOKEN=#{refresh_token}")
File.write(DOTENV_FILE_NAME, updated_text)