/**
 * Wrapper around the Airwallex redirect-page query string.
 *
 * The mapping between business concepts (order key, order id, intent id)
 * and query parameter names lives in this one place, so a rename or a
 * compat fallback touches this class instead of every call site.
 *
 * Usage:
 *   const redirectUrl = RedirectUrl.from(window.location.search);
 *   const orderKey    = redirectUrl.orderKey();
 */
export class RedirectUrl {
	private constructor(private readonly params: URLSearchParams) {}

	static from(search: string): RedirectUrl {
		return new RedirectUrl(new URLSearchParams(search));
	}

	/**
	 * WooCommerce order key, sent as `order_ref` on redirect-page and
	 * confirmation URLs. Falls back to the legacy `key` parameter so
	 * return URLs generated before the rename keep working.
	 */
	orderKey(): string {
		return this.params.get('order_ref') || this.params.get('key') || '';
	}

	orderId(): string {
		return this.params.get('order_id') || '';
	}

	intentId(): string {
		return this.params.get('intent_id') || '';
	}
}