<?php

/**
 * Cart snapshot value object.
 *
 * @package AfroIT_Messaging_WorkflowAutomations
 */

namespace AfroIT\Messaging\WorkflowAutomations\Cart;


if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Class CartSnapshot
 *
 * Represents a snapshot of cart contents at a point in time.
 */
final class CartSnapshot {

	/**
	 * @var string
	 */
	private string $phone;

	/**
	 * @var array<int, array<string, mixed>>
	 */
	private array $items;

	/**
	 * @var string
	 */
	private string $total;

	/**
	 * @var string
	 */
	private string $created_at;

	/**
	 * Constructor.
	 *
	 * @param string $phone     Customer phone.
	 * @param array  $items     Cart items.
	 * @param string $total     Cart total.
	 * @param string $created_at Created timestamp.
	 */
	public function __construct( string $phone, array $items = array(), string $total = '0', string $created_at = '' ) {
		$this->phone      = $phone;
		$this->items      = $items;
		$this->total      = $total;
		$this->created_at = $created_at ?: current_time( 'mysql' );
	}

	/**
	 * Create from WooCommerce cart.
	 *
	 * @param string $phone Customer phone.
	 * @return self
	 */
	public static function fromCart( string $phone ): self {
		$items = array();
		$total = '0';

		if ( function_exists( 'WC' ) && WC()->cart ) {
			$cart = WC()->cart;
			foreach ( $cart->get_cart() as $cart_item_key => $cart_item ) {
				$product = $cart_item['data'] ?? null;
				if ( $product instanceof \WC_Product ) {
					$items[] = array(
						'product_id' => $product->get_id(),
						'name'       => $product->get_name(),
						'quantity'   => $cart_item['quantity'] ?? 1,
						'price'      => $product->get_price(),
					);
				}
			}
			$total = (string) $cart->get_cart_total();
		}

		return new self( $phone, $items, $total );
	}

	/**
	 * Convert to array for JSON storage.
	 *
	 * @return array<string, mixed>
	 */
	public function toArray(): array {
		return array(
			'phone'      => $this->phone,
			'items'      => $this->items,
			'total'      => $this->total,
			'created_at' => $this->created_at,
		);
	}

	/**
	 * Create from stored array.
	 *
	 * @param array $data Stored data.
	 * @return self
	 */
	public static function fromArray( array $data ): self {
		return new self(
			(string) ( $data['phone'] ?? '' ),
			(array) ( $data['items'] ?? array() ),
			(string) ( $data['total'] ?? '0' ),
			(string) ( $data['created_at'] ?? '' )
		);
	}

	/**
	 * Get phone.
	 *
	 * @return string
	 */
	public function getPhone(): string {
		return $this->phone;
	}

	/**
	 * Get items.
	 *
	 * @return array<int, array<string, mixed>>
	 */
	public function getItems(): array {
		return $this->items;
	}

	/**
	 * Get total.
	 *
	 * @return string
	 */
	public function getTotal(): string {
		return $this->total;
	}

	/**
	 * Get cart data for Variables/template context.
	 *
	 * @return array<string, mixed>
	 */
	public function getCartDataForContext(): array {
		return array(
			'items' => $this->items,
			'total' => $this->total,
		);
	}
}