#!/bin/bash

# set shopt-options used by this shell-script
# Note, 0 (true) from shopt -q is "false" in a math context.
shopt -q globstar; globstar_set=$?
((globstar_set)) && shopt -s globstar
shopt -q extglob; extglob_set=$?
((extglob_set)) && shopt -s extglob

# return default shopt-options
function finish {
        ((globstar_set)) && shopt -u globstar
        ((extglob_set)) && shopt -u extglob
}
trap finish EXIT

print_help() {
  printf "Help: not implemented yet"
}

while getopts 'e:dh' flag; do
        case "${flag}" in
                e) extension+=("$OPTARG");;
                d) delete=true;;
                h) print_help
                exit 0;;
                *) exit 1 ;;
        esac
done

# Print available encoders
readarray -t encoders <<<$(ffmpeg -encoders -hide_banner|grep vp9)
echo "In FFMPEG verfügbare Encoder:"
for i in "${!encoders[@]}"; do
	echo "$i: ${encoders[i]}"
	#encoders[i]=$(echo ${encoders[0]} | awk '{print $2}')
done

# Choose an encoder
while :; do
	read -p "Choose an encoder [0]: " encoder
	[[ $encoder =~ ^[0-9]+$ ]] || { echo "Enter a valid number"; continue; }
	if ((encoder >= 0 && encoder < ${#encoders[@]})); then
		encoder=$(echo ${encoders[$encoder]} | awk '{print $2}')
		break
	else
		echo "number out of range, try again"
	fi
done

# write array into string
extension="${extension[*]}"
# change separator
extension=${extension// /|}

for file in **/*.@($extension); do
	echo $encoder
done