<?php
// Used by `wp server` to route requests.

namespace WP_CLI\Router;

/**
 * This is a copy of WordPress's add_filter() function.
 *
 * We duplicate it because WordPress is not loaded yet.
 */
function add_filter( $tag, $function_to_add, $priority = 10, $accepted_args = 1 ) {
    global $wp_filter, $merged_filters;

    $idx = _wp_filter_build_unique_id( $tag, $function_to_add, $priority );

    // phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited
    $wp_filter[ $tag ][ $priority ][ $idx ] = array(
        'function'      => $function_to_add,
        'accepted_args' => $accepted_args,
    );
    unset( $merged_filters[ $tag ] );
    return true;
}

/**
 * This is a copy of WordPress's _wp_filter_build_unique_id() function.
 *
 * We duplicate it because WordPress is not loaded yet.
 */
function _wp_filter_build_unique_id( $tag, $callback, $priority ) {
    global $wp_filter;
    static $filter_id_count = 0;

    if ( is_string( $callback ) ) {
        return $callback;
    }

    if ( is_object( $callback ) ) {
        // Closures are currently implemented as objects
        $callback = array( $callback, '' );
    } else {
        $callback = (array) $callback;
    }

    if ( is_object( $callback[0] ) ) {
        // Object Class Calling
        if ( function_exists( 'spl_object_hash' ) ) {
            return spl_object_hash( $callback[0] ) . $callback[1];
        } else {
            $obj_idx = get_class( $callback[0] ) . $callback[1];
            if ( ! isset( $callback[0]->wp_filter_id ) ) {
                if ( false === $priority ) {
                    return false;
                }
                $obj_idx .= isset( $wp_filter[ $tag ][ $priority ] )
                    ? count( (array) $wp_filter[ $tag ][ $priority ] )
                    : $filter_id_count;

                $callback[0]->wp_filter_id = $filter_id_count;
                ++$filter_id_count;
            } else {
                $obj_idx .= $callback[0]->wp_filter_id;
            }

            return $obj_idx;
        }
    } elseif ( is_string( $callback[0] ) ) {
        // Static Calling
        return $callback[0] . '::' . $callback[1];
    }
}

function _get_full_host( $url ) {
    // phpcs:ignore WordPress.WP.AlternativeFunctions.parse_url_parse_url
    $parsed_url = parse_url( $url );

    $host = $parsed_url['host'];
    if ( isset( $parsed_url['port'] ) && 80 !== $parsed_url['port'] ) {
        $host .= ':' . $parsed_url['port'];
    }

    return $host;
}

// We need to trick WordPress into using the URL set by `wp server`, especially on multisite.
add_filter(
    'option_home',
    function ( $url ) {
        $GLOBALS['wpcli_server_original_url'] = $url;

        return 'http://' . $_SERVER['HTTP_HOST'];
    },
    20
);

add_filter(
    'option_siteurl',
    function ( $url ) {
        if ( ! isset( $GLOBALS['wpcli_server_original_url'] ) ) {
            get_option( 'home' );  // trigger the option_home filter
        }

        $home_url_host = _get_full_host( $GLOBALS['wpcli_server_original_url'] );
        $site_url_host = _get_full_host( $url );

        if ( $site_url_host === $home_url_host ) {
            $url = str_replace( $site_url_host, $_SERVER['HTTP_HOST'], $url );
        }

        return $url;
    },
    20
);

$_SERVER['SERVER_ADDR'] = gethostbyname( $_SERVER['SERVER_NAME'] );
$wpcli_server_root      = $_SERVER['DOCUMENT_ROOT'];
// phpcs:ignore WordPress.WP.AlternativeFunctions.parse_url_parse_url
$wpcli_server_path = '/' . ltrim( parse_url( urldecode( $_SERVER['REQUEST_URI'] ) )['path'], '/' );

if ( file_exists( $wpcli_server_root . $wpcli_server_path ) ) {
    if ( is_dir( $wpcli_server_root . $wpcli_server_path ) && substr( $wpcli_server_path, -1 ) !== '/' ) {
        header( "Location: $wpcli_server_path/" );
        exit;
    }

    if ( strpos( $wpcli_server_path, '.php' ) !== false ) {
        chdir( dirname( $wpcli_server_root . $wpcli_server_path ) );
        require_once $wpcli_server_root . $wpcli_server_path;
    } else {
        return false;
    }
} else {
    chdir( $wpcli_server_root );
    require_once 'index.php';
}