pushpop

#!/bin/bash

ACTION=auto
FILENAME=${HOME}/.pushpop

while getopts a:i:e:f: FLAG; do
    ARGS=1;
    case $FLAG in
        i)
            WINDOW=$OPTARG
            ;;
        a)
            ACTION=$OPTARG
            ;;
        f)
            FILENAME=$OPTARG
            ;;
        e)
            EXPIRES=$OPTARG
            ;;
    esac
done    

if [ ! -e $FILENAME ]; then 
    touch $FILENAME
fi

NOW=$(date +"%s")

if [ "${WINDOW}x" == "x" ]; then
    WINDOWID=$(xdotool getactivewindow)
    WINDOWPID=$(xdotool getactivewindow getwindowpid)
    WINDOW="${WINDOWID}-${WINDOWPID}"
fi

if [ "$ACTION" == "auto" ]; then 
    grep -q $WINDOW $FILENAME
    if [ $? -eq 0 ]; then 
        ACTION="pop"
    else
        ACTION="push"
    fi
fi

function get_position() 
{
    FILENAME=$1
    WINDOW=$2
    grep $WINDOW $FILENAME| tail -1
}

function get_window_position()
{
    WINDOW=$1
    eval $(xdotool getwindowgeometry --shell $WINDOW)
    local frame=$(xprop -id $WINDOW|grep _NET_FRAME_EXTENTS |awk -F[=,] '{print $2, $3}')
    if [ "x${frame}" != "x" ]; then 
        frame_width=$(echo $frame|cut -d ' ' -f 1)
        frame_height=$(echo $frame|cut -d ' ' -f 2)
    fi
    NEW_X=$(( $X - $frame_width ))
    NEW_Y=$(( $Y - $frame_height ))
    echo ${NEW_X},${NEW_Y},${WIDTH},${HEIGHT} $SCREEN
}

if [ "$ACTION" == "push" ]; then
    WINDOWPOS=$(get_window_position $WINDOW)

    SIZEDATA=$(get_position $FILENAME $WINDOW)

    NEWSIZEDATA=$(echo $WINDOW $WINDOWPOS $NOW)
   
    if [ "${SIZEDATA}" != "${NEWSIZEDATA}" ]; then 
       echo $NEWSIZEDATA >> $FILENAME
    fi
fi

if [ "$ACTION" == "pop" ]; then
    TMPFILE=$(mktemp)
    SIZEDATA=$(get_position $FILENAME $WINDOW)
    if [ -n "$EXPIRES" ]; then
        TIME=$(echo $SIZEDATA|awk '{print $4}')
        AGE=$(expr $NOW - $TIME)
        if [ "$AGE" -lt "$EXPIRES" ]; then 
            echo $SIZEDATA 
        fi
    else 
        echo $SIZEDATA 
    fi
    grep -v "$SIZEDATA" $FILENAME > $TMPFILE
    if [ $? -le 1 ]; then 
        mv -f $TMPFILE $FILENAME;
    else 
        rm $TMPFILE
    fi
fi