#
# Example 4 - How to prepare an iDEAL payment with the Mollie API.
#
require File.expand_path "../lib/Mollie/API/Client", File.dirname(__FILE__)

begin
  #
  # Initialize the Mollie API library with your API key.
  #
  # See: https://www.mollie.nl/beheer/account/profielen/
  #
  mollie = Mollie::API::Client.new
  mollie.setApiKey "test_dHar4XY7LxsDOtmnkVtjNVWXLSlXsM"

  #
  # First, let the customer pick the bank in a simple HTML form. This step is actually optional.
  #
  if $request.params.empty?
    issuers = mollie.issuers.all

    $response.body << '<form method="post">Select your bank: <select name="issuer">'

    issuers.each { |issuer|
      if issuer.method == Mollie::API::Object::Method::IDEAL
        $response.body << '<option value=' << (CGI.escapeHTML issuer.id) << '>' << (CGI.escapeHTML issuer.name)
      end
    }

    $response.body <<  '<option value="">or select later</option>'
    $response.body <<  '</select><button>OK</button></form>'
  else
    #
    # Generate a unique order id for this example. It is important to include this unique attribute
    # in the redirectUrl (below) so a proper return page can be shown to the customer.
    #
    order_id = Time.now.to_i

    #
    # Determine the url parts to these example files.
    #
    protocol = $request.secure? && "https" || "http"
    hostname = $request.host || "localhost"
    port     = $request.port || 80
    path     = $request.script_name || ""

    #
    # Payment parameters:
    #   amount        Amount in EUROs. This example creates a € 27,50 payment.
    #   description   Description of the payment.
    #   redirectUrl   Redirect location. The customer will be redirected there after the payment.
    #   metadata      Custom metadata that is stored with the payment.
    #   method        Payment method "ideal".
    #   issuer        The customer's bank. If empty the customer can select it later.
    #
    payment = mollie.payments.create \
      :amount       => 27.50,
      :description  => "My first API payment",
      :redirectUrl  => "#{protocol}://#{hostname}:#{port}#{path}/3-return-page?order_id=#{order_id}",
      :metadata     => {
        :order_id => order_id
      },
      :method       => Mollie::API::Object::Method::IDEAL,
      :issuer       => !$request.params['issuer'].empty? ? $request.params['issuer'] : nil

    #
    # In this example we store the order with its payment status in a database.
    #
    database_write order_id, payment.status

    #
    # Send the customer off to complete the payment.
    #
    $response.redirect payment.getPaymentUrl
  end
rescue Mollie::API::Exception => e
  $response.body << "API call failed: " << (CGI.escapeHTML e.message)
end