#!/usr/bin/env sh

log=${HOME}/bloodpressure_log.csv
timezone=America/Chicago

#Sanity check
# Log sanity
if [ ! -f $log ]; then
    echo "Date/Time,Systolic,Diastolic,Pulse,Comment" > $log
elif ! (head -n 1 $log | grep -E '^Date' >/dev/null 2>&1); then
    sed -i '1 i\Date/Time,Systolic,Diastolic,Pulse,Comment' $log
fi
# Syntax sanity
if [ $# -eq 0 ]; then
    column -s, -t < $log
    exit 0
fi
if [ $# -lt 3 ]; then
    echo Wrong number of arguments\! >&2
    echo "Usage: bp [systolic] [diastolic] [pulse] <comment>" >&2
    exit 1
fi
#End sanity check

sys=$1
dia=$2
pulse=$3
comment=$4

echo Logged to $log\:
echo $(TZ=$timezone date +%Y-%m-%d\ %H\:%M),${sys},${dia},${pulse},${comment} >> $log && sed -n '1p;$p' $log | column -s, -t && exit 0