<?php
/**
 * MySQL 辅助（PHP 8 兼容：禁止向 mysqli 传入 null）
 */

if (!function_exists('cloak_db_string')) {
    /**
     * 将任意值转为可写入 SQL 的字符串（null → 空串）
     *
     * @param mixed $value
     */
    function cloak_db_string($value): string
    {
        if ($value === null) {
            return '';
        }
        return (string) $value;
    }
}

if (!function_exists('cloak_db_escape')) {
    /**
     * @param mysqli $conn
     * @param mixed  $value
     */
    function cloak_db_escape(mysqli $conn, $value): string
    {
        return mysqli_real_escape_string($conn, cloak_db_string($value));
    }
}

if (!function_exists('cloak_visitor_log_format_timing')) {
    /**
     * @param mixed $raw JSON 或已格式化的摘要
     */
    function cloak_visitor_log_format_timing($raw)
    {
        $raw = trim((string) $raw);
        if ($raw === '') {
            return '';
        }
        if (!class_exists('CloakPipelineTimer', false)) {
            require_once dirname(__DIR__) . '/Cloak/PipelineTimer.php';
        }
        $decoded = json_decode($raw, true);
        if (is_array($decoded)) {
            return CloakPipelineTimer::formatText($decoded);
        }
        return $raw;
    }
}

if (!function_exists('cloak_visitor_log_format_fp_hdata')) {
    /**
     * 指纹 hdata JSON 单行摘要（表格展示用）
     *
     * @param mixed $raw
     */
    function cloak_visitor_log_format_fp_hdata($raw)
    {
        $raw = trim((string) $raw);
        if ($raw === '') {
            return '';
        }
        $decoded = json_decode($raw, true);
        if (!is_array($decoded)) {
            return $raw;
        }
        $parts = [];
        foreach (['domain', 'ip', 'ciso', 'referer', 'log_id', 'risk_enhanced'] as $key) {
            if (!empty($decoded[$key])) {
                $parts[] = $key . '=' . $decoded[$key];
            }
        }
        if (!empty($decoded['automation']) && is_array($decoded['automation'])) {
            $auto = [];
            foreach ($decoded['automation'] as $k => $v) {
                if ($v) {
                    $auto[] = $k;
                }
            }
            if ($auto !== []) {
                $parts[] = 'automation=' . implode(',', $auto);
            }
        }
        if ($parts !== []) {
            return implode(' | ', $parts);
        }
        return json_encode($decoded, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
    }
}

if (!function_exists('cloak_visitor_log_fp_risk_explain')) {
    /**
     * 二次风控 hdata + reason 判定过程解析
     *
     * @return array{summary:string,html:string,data:array}
     */
    function cloak_visitor_log_fp_risk_explain($fpHdata, $reason, $result, $domain = '')
    {
        if (!class_exists('FpRiskExplain', false)) {
            require_once dirname(__DIR__) . '/Cloak/FpRiskExplain.php';
        }
        return FpRiskExplain::build($fpHdata, $reason, $result, $domain);
    }
}

if (!function_exists('cloak_visitor_log_apply_result_filter')) {
    /**
     * 日志列表 result 筛选：默认排除 wait(检测中)；显式选 wait/true/false 时精确匹配
     *
     * @return string SQL 片段（含前导 AND）
     */
    function cloak_visitor_log_apply_result_filter(mysqli $conn, $resultParam): string
    {
        $resultParam = trim((string) $resultParam);
        if ($resultParam === 'wait') {
            return " AND `result` = 'wait'";
        }
        if ($resultParam === 'true' || $resultParam === 'false') {
            return " AND `result` = '" . cloak_db_escape($conn, $resultParam) . "'";
        }
        return " AND (`result` IS NULL OR `result` <> 'wait')";
    }
}