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<?php

namespace VSP\Core\Traits;

defined( 'ABSPATH' ) || exit;

/**
 * Trait VSP_Framework_IP_Trait
 *
 * @author Varun Sridharan <varunsridharan23@gmail.com>
 */
trait URL {
    /**
     * Get first item segment.
     *
     * @param $segments
     *
     * @return string
     */
    public static function get_first_segment( $segments ) {
        $var = is_array( $segments ) ? $segments : self::segment_uri( $segments );
        return array_shift( $var );
    }

    /**
     * Get all URL parts based on a / seperator.
     *
     * @param null $uri
     *
     * @return array string → segments
     */
    public static function segment_uri( $uri = null ) {
        $uri = ( ! is_null( $uri ) ) ? $uri : $_SERVER['REQUEST_URI'];
        return explode( '/', trim( $uri, '/' ) );
    }

    /**
     * This function converts and URL segment to an safe one.
     * For example: `test name @132` will be converted to `test-name--123`.
     * It will also return all letters in lowercase
     *
     * @param string $slug → URL slug to clean up
     *
     * @return null|string|string[]
     */
    public static function generate_safe_slug( $slug ) {
        $slug = preg_replace( '/[^a-zA-Z0-9]/', '-', $slug );
        $slug = strtolower( trim( $slug, '-' ) );
        $slug = preg_replace( '/\-{2,}/', '-', $slug );
        return $slug;
    }

    /**
     * Converts plain text URLS into HTML links.
     * Second argument will be used as the URL label <a href=''>$custom</a>.
     *
     * @param string $url → URL
     * @param string $custom → if provided, this is used for the link label
     *
     * @return string → returns the data with links created around URLS
     */
    public static function auto_link( $url, $custom = null ) {
        $replace = ( null === $custom ) ? '<a href="http$2://$4">$1$2$3$4</a>' : '<a href="http$2://$4">' . $custom . '</a>';
        return preg_replace( '@(http)?(s)?(://)?(([-\w]+\.)+([^\s]+)+[^,.\s])@', $replace, $url );
    }

    /**
     * Get the server port.
     *
     * @return int → server port
     */
    public static function get_port() {
        return self::global_vars( 'SERVER_PORT' );
    }
}