<?php
/**
 * Order ability trait file.
 */

declare( strict_types=1 );

namespace Automattic\WooCommerce\Internal\Abilities\Domain\Traits;

use Automattic\WooCommerce\Enums\OrderStatus;
use Automattic\WooCommerce\Utilities\OrderUtil;

defined( 'ABSPATH' ) || exit;

/**
 * Shared order helpers for WooCommerce domain ability definitions.
 */
trait OrderAbilityTrait {

	/**
	 * Allowed order status slugs (without the `wc-` prefix).
	 *
	 * @return array<int, string>
	 */
	protected static function get_allowed_order_status_slugs(): array {
		return array_values(
			array_diff(
				array_map(
					array( OrderUtil::class, 'remove_status_prefix' ),
					array_keys( wc_get_order_statuses() )
				),
				array( OrderStatus::CHECKOUT_DRAFT )
			)
		);
	}

	/**
	 * Possible order status slugs (without the `wc-` prefix) for ability output.
	 *
	 * @return array<int, string>
	 */
	protected static function get_order_output_status_slugs(): array {
		return array_values(
			array_unique(
				array_map(
					array( OrderUtil::class, 'remove_status_prefix' ),
					array_merge( OrderStatus::get_all(), array_keys( wc_get_order_statuses() ) )
				)
			)
		);
	}

	/**
	 * Get an order note output schema.
	 *
	 * @return array
	 */
	protected static function get_order_note_output_schema(): array {
		return array(
			'type'                 => 'object',
			'properties'           => array(
				'note_id' => array( 'type' => 'integer' ),
				'order'   => self::get_order_output_schema(),
			),
			'additionalProperties' => false,
		);
	}

	/**
	 * Get the schema for a single order in a response.
	 *
	 * @return array
	 */
	protected static function get_order_output_schema(): array {
		return array(
			'type'                 => 'object',
			'properties'           => array(
				'id'                   => array( 'type' => 'integer' ),
				'status'               => array(
					'type' => 'string',
					'enum' => self::get_order_output_status_slugs(),
				),
				'currency'             => array(
					'type' => 'string',
					'enum' => array_keys( get_woocommerce_currencies() ),
				),
				'currency_symbol'      => array( 'type' => 'string' ),
				'total'                => array( 'type' => 'string' ),
				'customer_id'          => array( 'type' => 'integer' ),
				'billing_email'        => array(
					'type'   => array( 'string', 'null' ),
					'format' => 'email',
				),
				'payment_method'       => array( 'type' => 'string' ),
				'payment_method_title' => array( 'type' => 'string' ),
				'date_created'         => array(
					'type'   => array( 'string', 'null' ),
					'format' => 'date-time',
				),
				'date_created_gmt'     => array(
					'type'   => array( 'string', 'null' ),
					'format' => 'date-time',
				),
				'date_modified'        => array(
					'type'   => array( 'string', 'null' ),
					'format' => 'date-time',
				),
				'date_modified_gmt'    => array(
					'type'   => array( 'string', 'null' ),
					'format' => 'date-time',
				),
				'line_items'           => array(
					'type'        => 'array',
					'description' => __( 'Order line items. Only present when include_line_items is true.', 'woocommerce' ),
					'items'       => array(
						'type'                 => 'object',
						'properties'           => array(
							'id'           => array( 'type' => 'integer' ),
							'name'         => array( 'type' => 'string' ),
							'product_id'   => array( 'type' => 'integer' ),
							'variation_id' => array( 'type' => 'integer' ),
							'quantity'     => array( 'type' => 'integer' ),
							'subtotal'     => array( 'type' => 'string' ),
							'total'        => array( 'type' => 'string' ),
						),
						'additionalProperties' => false,
					),
				),
			),
			'additionalProperties' => false,
		);
	}

	/**
	 * Get an order from ability input.
	 *
	 * @param array $input Ability input.
	 * @return \WC_Order|\WP_Error
	 */
	protected static function get_order_from_input( array $input ) {
		if ( empty( $input['id'] ) ) {
			return new \WP_Error(
				'woocommerce_order_id_required',
				__( 'Order ID is required.', 'woocommerce' ),
				array( 'status' => 400 )
			);
		}

		$order_id = (int) $input['id'];

		if ( $order_id < 1 ) {
			return new \WP_Error(
				'woocommerce_order_id_required',
				__( 'Order ID is required.', 'woocommerce' ),
				array( 'status' => 400 )
			);
		}

		$order = wc_get_order( $order_id );

		if ( ! $order instanceof \WC_Order ) {
			return new \WP_Error(
				'woocommerce_order_not_found',
				__( 'Order not found.', 'woocommerce' ),
				array( 'status' => 404 )
			);
		}

		return $order;
	}

	/**
	 * Check order edit access for an ability input payload.
	 *
	 * @param mixed $input Ability input.
	 * @return bool
	 *
	 * @since 10.9.0
	 */
	public static function can_edit_order( $input = array() ): bool {
		$order_id = self::get_id_from_input( $input );

		return $order_id > 0 && wc_rest_check_post_permissions( 'shop_order', 'edit', $order_id );
	}

	/**
	 * Format an order for ability output.
	 *
	 * @param \WC_Order $order              Order object.
	 * @param bool      $include_line_items Whether to include line items.
	 * @return array
	 */
	protected static function format_order_for_response( \WC_Order $order, bool $include_line_items ): array {
		$billing_email = $order->get_billing_email();

		$data = array(
			'id'                   => $order->get_id(),
			'status'               => $order->get_status(),
			'currency'             => $order->get_currency(),
			'currency_symbol'      => html_entity_decode(
				get_woocommerce_currency_symbol( $order->get_currency() ),
				ENT_QUOTES | ENT_SUBSTITUTE | ENT_HTML401
			),
			'total'                => $order->get_total(),
			'customer_id'          => $order->get_customer_id(),
			'billing_email'        => '' === $billing_email ? null : $billing_email,
			'payment_method'       => $order->get_payment_method(),
			'payment_method_title' => $order->get_payment_method_title(),
			'date_created'         => wc_rest_prepare_date_response( $order->get_date_created(), false ),
			'date_created_gmt'     => wc_rest_prepare_date_response( $order->get_date_created() ),
			'date_modified'        => wc_rest_prepare_date_response( $order->get_date_modified(), false ),
			'date_modified_gmt'    => wc_rest_prepare_date_response( $order->get_date_modified() ),
		);

		if ( $include_line_items ) {
			$data['line_items'] = array();

			foreach ( $order->get_items() as $item ) {
				if ( ! $item instanceof \WC_Order_Item_Product ) {
					continue;
				}

				$data['line_items'][] = array(
					'id'           => $item->get_id(),
					'name'         => $item->get_name(),
					'product_id'   => $item->get_product_id(),
					'variation_id' => $item->get_variation_id(),
					'quantity'     => $item->get_quantity(),
					'subtotal'     => $item->get_subtotal(),
					'total'        => $item->get_total(),
				);
			}
		}

		return $data;
	}
}