Nordigen Ruby Library

require 'securerandom'
require 'nordigen-ruby'

# Get secret_id and secret_key from bankaccountdata.gocardless.com/user-secrets/ portal and pass to NordigenClient or load from .env file
client = Nordigen::NordigenClient.new(
  secret_id: "SECRET_ID",
  secret_key: "SECRET_KEY"
)

# Generate new access token. Token is valid for 24 hours
token_data = client.generate_token()

# Use existing token
client.set_token("YOUR_TOKEN")

# Get access and refresh token
# Note: access_token is automatically injected to other requests after you successfully obtain it
access_token = token_data["access"]
refresh_token = token_data["refresh"]

# Exchange refresh token. Refresh token is valid for 30 days
refresh_token = client.exchange_token(refresh_token)

# Get all institution by providing country code in ISO 3166 format
institutions = client.institution.get_institutions("LV")

# Institution id can be gathered from get_institutions response.
# Example Revolut ID
id = "REVOLUT_REVOGB21"

# Initialize bank authorization session
# Returns requisition_id and link to initiate authorization with a bank
init = client.init_session(
  # redirect url after successful authentication
  redirect_url: "https://gocardless.com",
  # institution id
  institution_id: id,
  # a unique user ID of someone who's using your services, usually it's a UUID
  reference_id: SecureRandom.uuid,
  # A two-letter country code (ISO 639-1)
  user_language: "en",
  # option to enable account selection view for the end user
  account_selection: true
)

link = init["link"] # bank authorization link
requisition_id = init["id"] # requisition id that is needed to get an account_id
puts link

# Get account id after you have completed authorization with a bank.
requisition_data = client.requisition.get_requisition_by_id(requisition_id)
# Get account id from list
account_id =  requisition_data["accounts"][0]

# Instantiate account object
account = client.account(account_id)

# Fetch account metadata
meta_data = account.get_metadata()
# Fetch details
details = account.get_details()
# Fetch balances
balances = account.get_balances()
# Fetch transactions
transactions = account.get_transactions()
# Fetch premium transactions
transactions = account.get_premium_transactions(date_from: "2021-12-01", date_to: "2022-01-30", country: "LV")
# Filter transactions by specific date range
transactions = account.get_transactions(date_from: "2021-12-01", date_to: "2022-01-30")