#!/bin/bash

mkdir -p ~/Screencasts
pid="/tmp/screencast.pid"

start () {
    slop=$(slop -f "%x %y %w %h %g %i") || exit 1
    read -r X Y W H G ID < <(echo $slop)
    notify-send -t 3000 "Starting 3 seconds..." "Stop the cast by pressing Control+space"
    sleep 3
    ffmpeg -f x11grab -s "$W"x"$H" -i :0.0+$X,$Y -f alsa -i pulse ~/`date +%Y-%m-%d.%H:%M:%S`.mp4 & echo $! > $pid
}

stop() {
    kill -INT `cat $pid`
    rm $pid
    notify-send "Screencast Stopped" "The video was saved into ~/Screencasts folder."
}

if [ -f "$pid" ]; then
    stop
else
    start
fi