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<?php

namespace Automattic\WooCommerce\StoreApi\Routes\V1\AI;

use Automattic\WooCommerce\Blocks\AI\Connection;
use Automattic\WooCommerce\Blocks\Images\Pexels;
use Automattic\WooCommerce\StoreApi\Routes\V1\AbstractRoute;

/**
 * Patterns class.
 */
class Images extends AbstractRoute {
	/**
	 * The route identifier.
	 *
	 * @var string
	 */
	const IDENTIFIER = 'ai/images';

/**
	 * The schema item identifier.
	 *
	 * @var string
	 */
	const SCHEMA_TYPE = 'ai/images';

/**
	 * Get the path of this REST route.
	 *
	 * @return string
	 */
	public function get_path() {
		return '/ai/images';
	}

/**
	 * Get method arguments for this REST route.
	 *
	 * @return array An array of endpoints.
	 */
	public function get_args() {
		return [
			[
				'methods'             => \WP_REST_Server::CREATABLE,
				'callback'            => [ $this, 'get_response' ],
				'permission_callback' => [ Middleware::class, 'is_authorized' ],
				'args'                => [
					'business_description' => [
						'description' => __( 'The business description for a given store.', 'woocommerce' ),
						'type'        => 'string',
					],
				],
			],
			'schema'      => [ $this->schema, 'get_public_item_schema' ],
			'allow_batch' => [ 'v1' => true ],
		];
	}

/**
	 * Generate Images from Pexels
	 *
	 * @param  \WP_REST_Request $request Request object.
	 *
	 * @return bool|string|\WP_Error|\WP_REST_Response
	 */
	protected function get_route_post_response( \WP_REST_Request $request ) {

$business_description = sanitize_text_field( wp_unslash( $request['business_description'] ) );

if ( empty( $business_description ) ) {
			$business_description = get_option( 'woo_ai_describe_store_description' );
		}

$last_business_description = get_option( 'last_business_description_with_ai_content_generated' );

if ( $last_business_description === $business_description ) {
			return rest_ensure_response(
				$this->prepare_item_for_response(
					[
						'ai_content_generated' => true,
						'images'               => array(),
					],
					$request
				)
			);
		}

$ai_connection = new Connection();

$site_id = $ai_connection->get_site_id();

if ( is_wp_error( $site_id ) ) {
			return $this->error_to_response( $site_id );
		}

$token = $ai_connection->get_jwt_token( $site_id );

if ( is_wp_error( $token ) ) {
			return $this->error_to_response( $token );
		}

$images = ( new Pexels() )->get_images( $ai_connection, $token, $business_description );

if ( is_wp_error( $images ) ) {
			$images = array(
				'images'      => array(),
				'search_term' => '',
			);
		}

return rest_ensure_response(
			$this->prepare_item_for_response(
				[
					'ai_content_generated' => true,
					'images'               => $images,
				],
				$request
			)
		);
	}
}