import { CartBaseController } from './cart_base_controller'

/*
 * Replaces checkout.js.
 *
 * When the customer is redirected back from the approval URL, there's
 * three params attached to the URL.  We need paymentId and PayerID to
 * execute the payment and later capture it via IPN.  The token can be
 * discarded.
 */
export default class extends CartBaseController {
  async connect () {
    if (this.params.PayerID === undefined) return

    this.site = window.site
    this.element.innerHTML = this.site.i18n.cart.layouts.paypal.confirming

    fetch(this.executeURL)
      .then(r => this.element.innerHTML = this.site.i18n.cart.layouts.paypal[(r.ok ? 'confirmed' : 'failure')])
      .catch(e => this.element.innerHTML = this.site.i18n.cart.layouts.paypal.failure)
  }

  /*
   * Convert URL params to Object
   *
   * @return [Object]
   */
  get params () {
    if (this._params) return this._params

    this._params = Object.fromEntries(decodeURIComponent(window.location.search.replace('?', '')).split('&').map(x => x.split('=')))

    return this._params
  }

  /*
   * URL to contact the store and execute the payment.
   */
  get executeURL () {
    return [ window.spree.host, 'paypal', 'execute', this.params.orderId, this.params.paymentId, this.params.PayerID ].join('/')
  }
}