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import os
import osproc
import strformat
import strutils
# This database will store the following data
# - 1 year worth of samples each 15 minutes
# - average of each day for 10 years
# - min of each day for 10 years
# - max of each day for 10 years
let
database = getAppDir().parentDir() / "database" / paramStr(1) & ".rrd"
step = 15 * 60
heartbeat = 20 * 60
secondsInDay = 24 * 60 * 60
samplesInDay = secondsInDay div step
secondsInYear = 365 * secondsInDay
samplesInYear = secondsInYear div step
daysIn10Years = 365 * 10
if fileExists(database):
echo(&"error: database '{database}' exists")
quit(1)
echo(&"step = {step} seconds")
echo(&"heartbeat = {heartbeat} seconds")
echo(&"samplesInYear = {samplesInYear}")
echo(&"samplesInDay = {samplesInDay}")
echo(&"daysIn10Years = {daysIn10Years}")
let args = [
"create", database,
"--start", "now",
"--step", $step,
&"DS:temperature:GAUGE:{heartbeat}:-40:40",
&"DS:humidity:GAUGE:{heartbeat}:0:100",
&"DS:pressure:GAUGE:{heartbeat}:U:U",
&"DS:battery:GAUGE:{heartbeat}:0:4",
&"RRA:AVERAGE:0.5:1:{samplesInYear}",
&"RRA:MIN:0.5:{samplesInDay}:{daysIn10Years}",
&"RRA:MAX:0.5:{samplesInDay}:{daysIn10Years}",
&"RRA:AVERAGE:0.5:{samplesInDay}:{daysIn10Years}",
]
createDir(database.parentDir())
echo("rrdtool " & args.join(" "))
quit(execCmd("rrdtool " & args.join(" ")))
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