package com.usky.vpp.service;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;

/**
 * VPP 时序数据（TDengine）查询服务
 */
public interface VppTsdbQueryService {

    /**
     * 批量查询设备指标历史曲线
     *
     * @return deviceUuid -> metric -> time -> value
     */
    Map<String, Map<String, TreeMap<LocalDateTime, BigDecimal>>> queryDeviceMetricHistory(
            List<String> deviceUuids,
            LocalDateTime startTime,
            LocalDateTime endTime,
            List<String> metrics);

    /**
     * 批量查询设备最新指标值
     *
     * @return deviceUuid -> metric -> value
     */
    Map<String, Map<String, BigDecimal>> queryLatestMetrics(List<String> deviceUuids, List<String> metrics);
}