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<?php
/**
 * Class Google\Site_Kit\Core\Util\BC_Functions
 *
 * @package   Google\Site_Kit\Core\Util
 * @copyright 2021 Google LLC
 * @license   https://www.apache.org/licenses/LICENSE-2.0 Apache License 2.0
 * @link      https://sitekit.withgoogle.com
 */

namespace Google\Site_Kit\Core\Util;

use BadMethodCallException;
use WP_REST_Request;

/**
 * Class for providing backwards compatible core functions, without polyfilling.
 *
 * @since 1.7.0
 * @access private
 * @ignore
 */
class BC_Functions {

/**
	 * Proxies calls to global functions, while falling back to the internal method by the same name.
	 *
	 * @since 1.7.0
	 *
	 * @param string $function_name Function name to call.
	 * @param array  $arguments     Arguments passed to function.
	 * @return mixed
	 * @throws BadMethodCallException Thrown if no method exists by the same name as the function.
	 */
	public static function __callStatic( $function_name, $arguments ) {
		if ( function_exists( $function_name ) ) {
			return call_user_func_array( $function_name, $arguments );
		}

if ( method_exists( __CLASS__, $function_name ) ) {
			return self::{ $function_name }( ...$arguments );
		}

throw new BadMethodCallException( "$function_name does not exist." );
	}

/**
	 * Basic implementation of the wp_sanitize_script_attributes function introduced in the WordPress version 5.7.0.
	 *
	 * @since 1.41.0
	 *
	 * @param array $attributes Key-value pairs representing `<script>` tag attributes.
	 * @return string String made of sanitized `<script>` tag attributes.
	 */
	protected static function wp_sanitize_script_attributes( $attributes ) {
		$attributes_string = '';

foreach ( $attributes as $attribute_name => $attribute_value ) {
			if ( is_bool( $attribute_value ) ) {
				if ( $attribute_value ) {
					$attributes_string .= ' ' . esc_attr( $attribute_name );
				}
			} else {
				$attributes_string .= sprintf( ' %1$s="%2$s"', esc_attr( $attribute_name ), esc_attr( $attribute_value ) );
			}
		}

return $attributes_string;
	}

/**
	 * A fallback for the wp_get_script_tag function introduced in the WordPress version 5.7.0.
	 *
	 * @since 1.41.0
	 *
	 * @param array $attributes Key-value pairs representing `<script>` tag attributes.
	 * @return string String containing `<script>` opening and closing tags.
	 */
	protected static function wp_get_script_tag( $attributes ) {
		return sprintf( "<script %s></script>\n", self::wp_sanitize_script_attributes( $attributes ) );
	}

/**
	 * A fallback for the wp_print_script_tag function introduced in the WordPress version 5.7.0.
	 *
	 * @since 1.41.0
	 *
	 * @param array $attributes Key-value pairs representing `<script>` tag attributes.
	 */
	protected static function wp_print_script_tag( $attributes ) {
		echo self::wp_get_script_tag( $attributes ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
	}

/**
	 * A fallback for the wp_get_inline_script_tag function introduced in the WordPress version 5.7.0.
	 *
	 * @since 1.41.0
	 *
	 * @param string $javascript Inline JavaScript code.
	 * @param array  $attributes  Optional. Key-value pairs representing `<script>` tag attributes.
	 * @return string String containing inline JavaScript code wrapped around `<script>` tag.
	 */
	protected static function wp_get_inline_script_tag( $javascript, $attributes = array() ) {
		$javascript = "\n" . trim( $javascript, "\n\r " ) . "\n";
		return sprintf( "<script%s>%s</script>\n", self::wp_sanitize_script_attributes( $attributes ), $javascript );
	}

/**
	 * A fallback for the wp_get_inline_script_tag function introduced in the WordPress version 5.7.0.
	 *
	 * @since 1.41.0
	 *
	 * @param string $javascript Inline JavaScript code.
	 * @param array  $attributes Optional. Key-value pairs representing `<script>` tag attributes.
	 */
	protected static function wp_print_inline_script_tag( $javascript, $attributes = array() ) {
		echo self::wp_get_inline_script_tag( $javascript, $attributes ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
	}

/**
	 * A fallback for the wp_get_sidebar function introduced in the WordPress version 5.9.0.
	 *
	 * Retrieves the registered sidebar with the given ID.
	 *
	 * @since 1.86.0
	 *
	 * @global array $wp_registered_sidebars The registered sidebars.
	 *
	 * @param string $id The sidebar ID.
	 * @return array|null The discovered sidebar, or null if it is not registered.
	 */
	protected static function wp_get_sidebar( $id ) {
		global $wp_registered_sidebars;

foreach ( (array) $wp_registered_sidebars as $sidebar ) {
			if ( $sidebar['id'] === $id ) {
				return $sidebar;
			}
		}

if ( 'wp_inactive_widgets' === $id ) {
			return array(
				'id'   => 'wp_inactive_widgets',
				'name' => __( 'Inactive widgets', 'default' ),
			);
		}

return null;
	}
}