<?php

	/*
	|--------------------------------------------------------------------------------------
	| AVE.cms
	|--------------------------------------------------------------------------------------
	| @package      AVE.cms
	| @file         system/App/Common/NotFoundLog.php
	| @author       AVE.cms <support@ave-cms.ru>
	| @copyright    2007-2026 (c) AVE.cms
	| @link         https://ave-cms.ru
	| @version      3.3
	*/

	namespace App\Common;

	defined('BASEPATH') || die('Direct access to this location is not allowed.');

	use DB;

	/**
	 * Журнал 404: какие несуществующие URL запрашивают (и откуда). Пишется из
	 * публичного рантайма при отдаче 404, читается разделом админки.
	 */
	class NotFoundLog
	{
		public static function table()
		{
			return SystemTables::table('not_found_log');
		}

		/** Записать текущий 404-запрос (данные берём из $_SERVER). Не бросает. */
		public static function record()
		{
			try {
				$uri = isset($_SERVER['REQUEST_URI']) ? (string) $_SERVER['REQUEST_URI'] : '';
				$path = (string) parse_url($uri, PHP_URL_PATH);
				$path = rawurldecode($path);
				if ($path === '' || self::isNoise($path)) {
					return false;
				}

				$query = (string) parse_url($uri, PHP_URL_QUERY);
				$referer = isset($_SERVER['HTTP_REFERER']) ? (string) $_SERVER['HTTP_REFERER'] : '';
				$ua = isset($_SERVER['HTTP_USER_AGENT']) ? (string) $_SERVER['HTTP_USER_AGENT'] : '';
				$now = time();

				DB::query(
					'INSERT INTO `' . self::table() . '`'
					. ' (path_hash, path, query_string, referer, user_agent, hits, first_seen_at, last_seen_at)'
					. ' VALUES (%s, %s, %s, %s, %s, 1, %i, %i)'
					. ' ON DUPLICATE KEY UPDATE hits = hits + 1, last_seen_at = VALUES(last_seen_at),'
					. ' referer = VALUES(referer), query_string = VALUES(query_string)',
					hash('sha256', $path),
					mb_substr($path, 0, 512),
					mb_substr($query, 0, 512),
					mb_substr($referer, 0, 512),
					mb_substr($ua, 0, 255),
					$now,
					$now
				);
				return true;
			} catch (\Throwable $e) {
				error_log('NotFound log write failed: ' . $e->getMessage());
				return false;
			}
		}

		protected static function isNoise($path)
		{
			$noise = array('/favicon.ico', '/robots.txt', '/sitemap.xml', '/ads.txt');
			if (in_array($path, $noise, true)) {
				return true;
			}

			if (strpos($path, '/.well-known/') === 0 || strpos($path, '/apple-touch') === 0) {
				return true;
			}

			return false;
		}

		public static function rows($limit = 300, $query = '', $onlyUnresolved = false)
		{
			$limit = max(1, min(1000, (int) $limit));
			$query = trim((string) $query);
			$where = array();
			$args = array();
			if ($query !== '') {
				$where[] = '(path LIKE %ss OR referer LIKE %ss)';
				$args[] = $query;
				$args[] = $query;
			}

			if ($onlyUnresolved) {
				$where[] = 'resolved = 0';
			}

			$sql = 'SELECT * FROM `' . self::table() . '`';
			if ($where) {
				$sql .= ' WHERE ' . implode(' AND ', $where);
			}

			$sql .= ' ORDER BY resolved ASC, last_seen_at DESC, id DESC LIMIT ' . $limit;
			$rows = call_user_func_array(array('DB', 'query'), array_merge(array($sql), $args))->getAll();
			return $rows ?: array();
		}

		public static function stats()
		{
			$row = DB::query(
				'SELECT COUNT(*) AS urls, COALESCE(SUM(hits), 0) AS hits,'
					. ' SUM(CASE WHEN resolved = 0 THEN 1 ELSE 0 END) AS unresolved'
					. ' FROM `' . self::table() . '`'
			)->getAssoc();
			return array(
				'urls' => isset($row['urls']) ? (int) $row['urls'] : 0,
				'hits' => isset($row['hits']) ? (int) $row['hits'] : 0,
				'unresolved' => isset($row['unresolved']) ? (int) $row['unresolved'] : 0,
			);
		}

		public static function one($id)
		{
			$row = DB::query('SELECT * FROM `' . self::table() . '` WHERE id = %i LIMIT 1', (int) $id)->getAssoc();
			return $row ?: null;
		}

		public static function resolve($id, $resolved = true)
		{
			DB::query('UPDATE `' . self::table() . '` SET resolved = %i WHERE id = %i', $resolved ? 1 : 0, (int) $id);
			return true;
		}

		public static function delete($id)
		{
			return (bool) DB::Delete(self::table(), 'id = %i', (int) $id);
		}

		public static function clearResolved()
		{
			DB::query('DELETE FROM `' . self::table() . '` WHERE resolved = 1');
			return (int) DB::affectedRows();
		}
	}