<?php
/**
 * 访客日志列表查询与行格式化（datalist / sdatalist 共用，避免重复重逻辑）
 */
class VisitorLogListHelper
{
    /**
     * @param mysqli $conn
     * @param array  $get
     */
    public static function buildWhere($conn, array $get)
    {
        $where = '1';
        $where .= cloak_visitor_log_apply_result_filter($conn, $get['result'] ?? '');
        $map   = [];

        if (!empty($get['visit_date'])) {
            $day = trim((string) $get['visit_date']);
            if (preg_match('/^\d{4}-\d{2}-\d{2}$/', $day)) {
                $dayEsc = cloak_db_escape($conn, $day);
                $map[]  = "`visit_date` >= '{$dayEsc} 00:00:00' AND `visit_date` < DATE_ADD('{$dayEsc} 00:00:00', INTERVAL 1 DAY)";
            }
        }
        if (!empty($get['country'])) {
            $map[] = "country LIKE '" . cloak_db_escape($conn, $get['country']) . "'";
        }
        if (!empty($get['IP'])) {
            $map[] = "IP LIKE '" . cloak_db_escape($conn, $get['IP']) . "'";
        }
        if (!empty($get['domain'])) {
            $map[] = "domain LIKE '%" . cloak_db_escape($conn, $get['domain']) . "%'";
        }
        if (!empty($get['spage'])) {
            $map[] = "page LIKE '%" . cloak_db_escape($conn, $get['spage']) . "%'";
        }
        if ($map !== []) {
            $where .= ' AND ' . implode(' AND ', $map);
        }

        return $where;
    }

    /**
     * 列表轻量 SELECT（不拉取 fp_hdata / api_* 等大 TEXT）
     *
     * @param bool $withSimulation
     */
    public static function listSelectSql($where, $startPosition, $recordsPerPage, $withSimulation = true)
    {
        $cols = '`id`, `campagin_id`, `visit_md5_code`, `domain`, `visit_date`, `IP`, `country`, `result`, `reason`, `fp_url`, `referer`, `vtimes`, `client`, `browser`, `page`, `language`, `device`, `judge_timing`, '
            . '(CASE WHEN `fp_hdata` IS NOT NULL AND `fp_hdata` <> \'\' THEN 1 ELSE 0 END) AS `has_fp_hdata`, '
            . '(CASE WHEN `api_by_request` IS NOT NULL AND `api_by_request` <> \'\' THEN 1 ELSE 0 END) AS `has_api_by_request`, '
            . '(CASE WHEN `api_by_response` IS NOT NULL AND `api_by_response` <> \'\' THEN 1 ELSE 0 END) AS `has_api_by_response`, '
            . '(CASE WHEN `api_risk_request` IS NOT NULL AND `api_risk_request` <> \'\' THEN 1 ELSE 0 END) AS `has_api_risk_request`, '
            . '(CASE WHEN `api_risk_response` IS NOT NULL AND `api_risk_response` <> \'\' THEN 1 ELSE 0 END) AS `has_api_risk_response`, '
            . '`add_time`';
        if ($withSimulation) {
            $cols .= ', `is_simulation`, `sim_source_log_id`';
        }

        $startPosition  = (int) $startPosition;
        $recordsPerPage = (int) $recordsPerPage;

        return "SELECT {$cols} FROM `visitor_logs` WHERE {$where} ORDER BY `id` DESC LIMIT {$startPosition}, {$recordsPerPage}";
    }

    /**
     * @param array $row
     * @param array $countries
     * @param array $reasons
     */
    public static function formatListRow(array $row, array $countries, array $reasons)
    {
        if (!empty($row['country'])) {
            $row['country'] = $countries[$row['country']] ?? '无';
        } else {
            $row['country'] = '无';
        }
        if (isset($reasons[$row['reason']])) {
            $row['reason'] = $reasons[$row['reason']];
        }
        if (($row['result'] ?? '') === 'wait') {
            $row['result'] = '检测中';
        }

        $row['judge_timing_text'] = cloak_visitor_log_format_timing($row['judge_timing'] ?? '');

        if (!empty($row['has_fp_hdata'])) {
            $row['fp_hdata_text'] = '有指纹数据';
        } else {
            $row['fp_hdata_text'] = '';
        }

        $row['api_by_request_text']    = self::auditPlaceholder($row, 'has_api_by_request');
        $row['api_by_response_text']   = self::auditPlaceholder($row, 'has_api_by_response');
        $row['api_risk_request_text']  = self::auditPlaceholder($row, 'has_api_risk_request');
        $row['api_risk_response_text'] = self::auditPlaceholder($row, 'has_api_risk_response');

        unset(
            $row['has_fp_hdata'],
            $row['has_api_by_request'],
            $row['has_api_by_response'],
            $row['has_api_risk_request'],
            $row['has_api_risk_response']
        );

        return $row;
    }

    /**
     * @param array  $row
     * @param string $flagKey
     */
    private static function auditPlaceholder(array $row, $flagKey)
    {
        return !empty($row[$flagKey]) ? '__LAZY__' : '-';
    }

    /**
     * @param mysqli $conn
     * @param string $where
     */
    public static function countWhere($conn, $where)
    {
        $sql = "SELECT COUNT(*) AS `total` FROM `visitor_logs` WHERE {$where}";
        $res = $conn->query($sql);
        if (!$res) {
            return 0;
        }
        $row = $res->fetch_assoc();
        $res->free();

        return (int) ($row['total'] ?? 0);
    }
}