dump-sensors-to-json

#!/bin/bash

cd `dirname $0`

# extract sensor records newer than last one in NS
(
last=`cat data/last-sensor.time`
echo -n '['
cat data/sensors.dump \
| while read datstr millis code
do
    if [ $millis -le $last ]
    then
	echo skipping $datstr $millis $code >&2
	continue
    fi
    addms=$(($millis % 1000))
    datstr=`echo $datstr | sed "s~Z\$~.${addms}Z~"`
    json="{\"eventType\":\"Sensor Change\",\"date\":${millis},\"created_at\":\"$datstr\",\"enteredBy\":\"`basename $0`\",\"notes\":\"$code\"}"
    echo $json
done \
| sort | uniq \
| while read line
do
    echo ,
    echo -n "$line"
done
echo ""
echo ']'
) \
| sed 's~\[,~[~' \
| tee data/sensors.json
echo ""
if [ `cat data/sensors.json | wc -l` -le 2 ]
then
    echo No new sensors found, resulting json file is empty.
fi

exit