#!/bin/sh

# Takes files downloaded through youtube-dl and cleans up their filenames

stdin() {
		while read -r infile
		do
				ext=".$(echo $infile | rev | cut -d '.' -f 1 | rev)"
				ext_length=${#ext}
				remove=$((12+$ext_length))
				filename="$(echo $infile | rev | cut -c $remove- | rev)"
				mv "$infile" "$filename$ext"
		done
}

cli() {
		for infile in "$@"
		do
				ext=".$(echo $infile | rev | cut -d '.' -f 1 | rev)"
				ext_length=${#ext}
				remove=$((12+$ext_length))
				filename="$(echo $infile | rev | cut -c $remove- | rev)"
				mv "$infile" "$filename$ext"
		done
}

options=$(getopt -o 'hsx' -- "$@")
eval set -- "$options"
read_stdin=0
noext=0
while true
do
		case "$1" in
				'-h') echo "usage: yt-fix [options] [files]\n\th\tprint this help and exit\n\tx\tdo not include extension in output\n\ts\tread from stdin"; exit 0;;
				'-s') read_stdin=1; shift; continue;;
				'-x') noext=1; shift; continue;;
				'--') shift; break;;
		esac
done

[ $read_stdin -eq 0 ] && cli "$@" || stdin