package main

import (
	"math"
	"time"

	"lc/common/util"
)

type LiquidData struct {
	Time      time.Time //采集时间
	SensorVal float64   //传感器采集值
	CalcVal   float64   //深度
}

type LiguidDataMgr struct {
	LastHourData []LiquidData //最近一小时数据
}

func (o *LiguidDataMgr) GetAverageLast() (float64, float64) {
	n := 0
	for i, v := range o.LastHourData {
		if util.MlNow().Sub(v.Time).Minutes() > 1 {
			n = i
		} else {
			break
		}
	}
	if n > 0 {
		o.LastHourData = o.LastHourData[n+1:]
	}
	if len(o.LastHourData) > 0 {
		//取过去一小时的平均值
		depthSum := 0.000
		for _, v := range o.LastHourData {
			depthSum += v.CalcVal
		}
		depthSum = depthSum / float64(len(o.LastHourData))
		return Precision(depthSum, 3, false), o.LastHourData[len(o.LastHourData)-1].CalcVal
	}
	return 0.000, 0.000
}

func (o *LiguidDataMgr) Adjust(h0, h float64) float64 {
	depth := 0.000
	if h0 > h {
		depth = Precision(h0-h, 3, false)
	}
	data := LiquidData{Time: util.MlNow(), SensorVal: h, CalcVal: 0.000}
	if len(o.LastHourData) > 0 {
		agv, last := o.GetAverageLast()
		diff := math.Abs(last - depth)
		//本次深度值和上次相差100mm，则忽略本次值
		if diff > 100 {
			data.CalcVal = agv
		} else {
			data.CalcVal = depth
		}
	} else {
		if depth < 200 {
			data.CalcVal = depth
		}
	}
	o.LastHourData = append(o.LastHourData, data)
	return data.CalcVal
}