module Stripe::OAuth

def self.authorize_url(params = {}, opts = {})
  client = opts[:client] || StripeClient.active_client
  base = opts[:connect_base] || client.config.connect_base
  path = "/oauth/authorize"
  path = "/express" + path if opts[:express]
  params[:client_id] = get_client_id(params)
  params[:response_type] ||= "code"
  query = Util.encode_parameters(params)
  "#{base}#{path}?#{query}"
end

def self.deauthorize(params = {}, opts = {})
  opts = Util.normalize_opts(opts)
  params[:client_id] = get_client_id(params)
  resp, opts = OAuthOperations.execute_resource_request(
    :post, "/oauth/deauthorize", params, opts
  )
  # This is just going to return a generic StripeObject, but that's okay
  Util.convert_to_stripe_object(resp.data, opts)
end

def self.get_client_id(params = {})
  client_id = params[:client_id] || Stripe.client_id
  unless client_id
    raise AuthenticationError, "No client_id provided. " \
      'Set your client_id using "Stripe.client_id = <CLIENT-ID>". ' \
      "You can find your client_ids in your Stripe dashboard at " \
      "https://dashboard.stripe.com/account/applications/settings, " \
      "after registering your account as a platform. See " \
      "https://stripe.com/docs/connect/standalone-accounts for details, " \
      "or email support@stripe.com if you have any questions."
  end
  client_id
end

def self.token(params = {}, opts = {})
  opts = Util.normalize_opts(opts)
  opts[:api_key] = params[:client_secret] if params[:client_secret]
  resp, opts = OAuthOperations.execute_resource_request(
    :post, "/oauth/token", params, opts
  )
  # This is just going to return a generic StripeObject, but that's okay
  Util.convert_to_stripe_object(resp.data, opts)
end