photoNotification.sh

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# This script below will email a time & date stamped photo                                                                   #
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#!/bin/bash

# create an infinite loop inside wwhich operations will be done
# to continuously check for door status and send notifications
while true; 
do 

    trap 'echo "4" > /sys/class/gpio/unexport' 0

    # get the state value of the pin on the raspberry
    stat=`cat /sys/class/gpio/gpio4/value`

    while [ $stat = "1" ]
    do
        # get date and time
        date=`date +%d-%m-%Y`
        time=`date '+%H:%M'`

        # display door status on terminal
        echo "Door opened at $time on $date"
        
        # Runs camera for specific time, and take JPG capture at end if requested
        # -t, --timeout	: Time (in ms) before takes picture and shuts down (if not specified, set to 5s)
        raspistill -t 100 -o $t$d.jpg -w 1024 -h 768 -q 30
        
        # convert the picture and stamped time & date on it
        convert -pointsize 20 -fill yellow -draw 'text 850,30 "'$t' '$d'"' $t$d.jpg $d$t.jpg
        
        # send email with attached photo
        mpack -s "door opned" /home/pi/$d$t.jpg example@gmail.com
        
            while [ $stat = "1" ]
            do
                # get the state value of the pin on the raspberry
                stat=`cat /sys/class/gpio/gpio4/value` 
                sleep 0.09
            done
            
        echo "door closed"
        
    done
    
    # add a waiting time reduce the the processor use by over 90%
    sleep 0.09

done

exit 0
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