#!/bin/bash
# Author: Nate Stokes
# License: GPL3+
# Based on a blog entry by Alon Ivtsan
#
#
# mycolor='\033[0;30m' - colorise echo output to make it pretty!!
# Notes 15/4 - Apparently I should be using tput instead of ascii escapes, but they no worky.
# Notes 1/05/15 - Forked to add imagemajik scale function, because I've been getting heaps of broken cbr/cbz that are
# fine on the computer, but won't display on Android. My solution for this is to basically batch rename and very slightly
# resize the image files in between unrarring and rezipping - Seems to be working ok so far.
# Intentions - To extend teh suite of scripts to fix without converting, convert and rename without resizing, etc etc.
# Notes 06/05/15 - After struggling like hell to get the bigger comics to convert while still being able to use my
# machine, I've gotten looping working properly with teh image scaling thingy. Now I'll want to see if it's faster on
# small files, or if I should have a big file and a small file version of the script.
#
#
# The purpose of this file is to extract a cbz file, rename the content files based to the original cbz name,
# scale the image by a very small amount to negate the integrity issue with CBZ readers on Android and rearchive
# in CBZ format.
#
#
# Color escapes for prettiness
red='\033[1;31m'
green='\033[1;32m'
blue='\033[1;34m'
purple='\033[1;35m'
NC='\033[0m' #no color - return echo to default

# Variables
COUNTER=0
tick=0
BACKUP='original_cbrs'

# Attempt at using tput #
#red='tput setaf 1'
#green='tput setaf 2'
#blue='tput setaf 3'
#purple='tput setaf 4'
#NC='tput sgr0'

mkdir "$BACKUP"; #Stick the old files out of the way once converted

for FILE in *{.cbr,.CBR}
do
[ -e "$FILE" ] || continue
#echo -e "${red}**Converting ${green} $FILE ${red} to cbz format:${NC}"
DIR="${FILE%.*}"
mkdir "$DIR";
mkdir "$DIR"/temp;
echo -e "${blue}-Unrar ${green} $FILE ${NC}"
unrar e ./"$FILE"  ./"$DIR"/temp;
mv "$FILE" ./"$BACKUP"/;
cd "$DIR"/temp;

nice -n 19 convert -verbose -resize 95% '*.jpg' ../"$DIR"-%03d.jpg;

# for i in *.jpg;
# do
# nice -n 19 convert -limit memory 5GiB -verbose -resize 95% "$i" ../a-"$DIR"-`printf %03d $tick`.jpg;
# tick=$((tick + 1))
# done

cd ../..;
rm -r "$DIR"/temp;

echo -e "${purple}-Zipping Up: ${green} $DIR ${NC}"
zip -rq "$DIR".cbz "$DIR";
rm -r "$DIR";
# Now Move CBR File to the old directory

COUNTER=$((COUNTER + 1))
echo -e "${red}Conversion of ${green} $FILE ${red} successful!"
echo -e "${red}  --Old CBR Copy Of ${green} $FILE ${red} Moved To ${blue}/old ${red}--${NC}\n"
done
echo -e "${red}All Files Completed, ${green} $COUNTER ${red} Files Converted.${NC}"