#!/bin/bash

DEFAULT_DEGREES="-90"
BAR="##################################################"
BARLENGTH=40

DEGREES=$1
WORKING_DIR=$PWD
"${DEGREES:=$DEFAULT_DEGREES}" 2>/dev/null

if [ ! -x /usr/bin/convert ] ; then
	echo "Please install convert from ImageMagick!"
	exit 1
fi

IFS="
"

echo
echo "Rotating all images (*.jpg/*.png) found with these settings:"
echo
echo "     Rotation: $DEGREES"
echo "    Directory: $WORKING_DIR"
echo

for dir in $WORKING_DIR/*; do
	i=0

	if [ $( stat -c %F $dir ) == "directory" ] ; then
		name=$( basename -- "$dir" )
		cd $dir 2>/dev/null
	else
		name="${PWD##*/}"
	fi

	filelist=( `ls *.png *.jpg 2>/dev/null` )
	TOTAL=${#filelist[*]}

	while (($i < $TOTAL)) ; do
		n=$((i*BARLENGTH / TOTAL))
		PROGRESS=$((i * 100 / TOTAL))
		tput el
		tput cr
		printf "%s [%-${BARLENGTH}s] %3d%%" "${name:0:60}" "${BAR:0:n}" $PROGRESS
		# Do the converting!
		convert -rotate $DEGREES ${filelist[$i]} ${filelist[$i]} 2>/dev/null
		((i += 1))
	done

	if [ $( stat -c %F $dir ) == "regular file" ] ; then
		break
	fi
done

echo