#!/bin/bash

SGV=$1
DIRECTION=$2
AT=$3
OPTS=""
if [ -n "$AT" ]; then
  OPTS="--date ${AT}"
fi
ISO=$(date -Iseconds $OPTS)
UNIX=$(date +%s $OPTS)

(
cat <<EOF
{ "sgv": "$SGV",
  "device": "xxx-test-device",
  "direction": "$DIRECTION",
  "dateString": "$ISO",
  "date": $UNIX
}
EOF
) | tr -d '\n'
echo