#!/bin/bash
# 120914 --ro

# ARG-1 ID 
# ARG-2 to tail 
# ARG-3 Filname

# Most cases this script is called via cron 
# with the arguments above. Of course you'll
# change the path's below.

# Flow is simple. Each sensor should have a
# filter function and plot function.
# 
# 1) Filter function uses seltag to extracr data
#     and create a tmp with data
#
# 2) plot function uses gnuplot 
#
# Depending on the ID different filter/plot functions
# are used.

DATA=/var/log/sensors.dat
PTH=/usr/local/scripts
WEB=/www/www.herjulf.net/projects/sensor/environmental
TMP=/tmp/sens.dat
DEST=/var/www/www.herjulf.net/projects/sensor/environmental

function plot()
{
 cd /tmp
#tail -$1 $DATA  >  $TMP
 /opt/gnuplot/bin/gnuplot < $PLOT > $DEST/$1
}

function remove_temp()
{
 rm -r $TMP
}

function filter_AC_LED()
{
# Filter out sensor and remove tags so gnuplot can be used.
  tail -$2 $DATA | grep $1 | grep ^20 |
  cat $DATA | grep $1 | grep ^20 | tail -$2 |  /sbin/seltag 2 ID=%s T=%s RSSI=%s P1=%s P1_T=%s  > $TMP
}

# ------ Finally we do the work ----------- 
# And of course you add filter and plots for 
# The senors you want.


## Check if LED energy plot if wanted
if [ 0007f == $1 ]; then
TMP=/tmp/main_power.dat
filter_AC_LED $1 $2
PLOT=/usr/local/scripts/sens-energy-meter-LED.gp
plot   $3
fi

# Done clean-up
remove_temp