<?php
/**
 * Burst Statistics endpoint for collecting hits
 */
define( 'SHORTINIT', true ); // disable loading of most WP core files
// Find the base path
define( 'BASE_PATH', find_wordpress_base_path() . '/' );
// Load WordPress Core
if ( ! file_exists( BASE_PATH . 'wp-load.php' ) ) {
	die( 'WordPress not installed here' );
}
require_once BASE_PATH . 'wp-load.php';

require_once __DIR__ . '/helpers/php-user-agent/UserAgentParser.php';
if ( file_exists( __DIR__ . '/pro/tracking/tracking.php' ) ) {
	require_once __DIR__ . '/pro/tracking/tracking.php';
}
require_once __DIR__ . '/tracking/tracking.php';

burst_beacon_track_hit();

function find_wordpress_base_path() {
	// Check Bitnami-specific structure first
	$bitnami_path = '/opt/bitnami/wordpress/wp-load.php';
	if ( ! burst_has_open_basedir_restriction( $bitnami_path ) &&
		file_exists( $bitnami_path ) &&
		file_exists( '/bitnami/wordpress/wp-config.php' )
	) {
		return '/opt/bitnami/wordpress';
	}

	// If not in Bitnami structure, fall back to original logic

	$path = __DIR__;
	// move three directories up from here
	$path = "$path/../../..";

	do {
		// check if the wp-load.php file exists here. If not, we assume it's in a subdir.
		if ( file_exists( $path . '/wp-load.php' ) ) {
			return $path;
		} else {
			// wp not in this directory. Look in each folder to see if it's there.
			if ( file_exists( $path ) && $handle = opendir( $path ) ) {
				while ( false !== ( $file = readdir( $handle ) ) ) {
					if ( $file !== '.' && $file !== '..' ) {
						$file = $path . '/' . $file;
						if ( is_dir( $file ) && file_exists( $file . '/wp-load.php' ) ) {
							$path = $file;
							break;
						}
					}
				}
				closedir( $handle );
			}
		}

		return $path;

	} while ( $path = realpath( "$path/.." ) );
}

function burst_has_open_basedir_restriction( $path ) {
	// Default error handler is required
	set_error_handler( null );
	// Clean last error info.
	error_clear_last();
	// Testing...
	@file_exists( $path );
	// Restore previous error handler
	restore_error_handler();
	// Return `true` if error has occurred
	return ( $error = error_get_last() ) && $error['message'] !== '__clean_error_info';
}