#!/bin/bash

# This script does Batch resizing of the Photographs
# It requires ImageMagick.* image editing software
# http://www.imagemagick.org/script/index.php
# Author: Ruituraj A. Gandhi
# Version 1.0
# Shared under Creative Commons Attribution-Share Alike 3.0 United States License

# Program Parameters

echo "Running Image enhancing & resizing script based on ImageMagik software.\n"

echo "Please enter the full Source & Target directory path for Images respectively:\n"
read BASE_DIR OUTPUT_DIR

echo "The base directory is: ${BASE_DIR}, the output directory is: ${OUTPUT_DIR}\n"

# Default base directory path where images are located
DEFAULT_BASE_DIR=`pwd`

# Output directory for images
DEFAULT_OUTPUT_DIR="${DEFAULT_BASE_DIR}/Resized_Images"

# Search if IMAGEMAGIK software is installed on the sytem
SEARCH_IMAGEMAGIK=`rpm -qa | grep -i ImageMagick*.* | wc -l`

if [ $SEARCH_IMAGEMAGIK -eq 0 ]; then
	echo "The ImageMagik not found on the system.\n";
	echo "Program will exit. \n"
else
	echo "Image Magik software found on the system.\n"
	echo "Resizing & Enhancing the images in ${BASE_DIR}.\n"
	
	if [ -z "$BASE_DIR" ]; then
		BASE_DIR=${DEFAULT_BASE_DIR}
		echo  "The default base directory is: ${BASE_DIR}\n"
	fi

	if [ -z "$OUTPUT_DIR"]; then
		echo "Creating new output directory ${DEFAULT_OUTPUT_DIR}\n"
		mkdir ${DEFAULT_OUTPUT_DIR}
		OUTPUT_DIR=${DEFAULT_OUTPUT_DIR}
		echo "The defualt output directory is: ${OUTPUT_DIR}\n"
	fi

	cp ${BASE_DIR}/* ${OUTPUT_DIR}/

# Remove spaces from Filenames & Replace with underscore
	for file in ${OUTPUT_DIR}/*.jpg
	do
		echo "Removing spaces for \n" ${file}
		mv "${file}" "`echo ${file} | sed "s/ /_/g"`"	
	done	

	for file in ${OUTPUT_DIR}/*.jpg
	do
		echo "The image being processed is: ${file}\n"
		mogrify -verbose -enhance -normalize -type truecolor -resize 1600X1600 ${file}
		echo "Images resized to 1600X1600"
	done
fi