cbzMerger

#!/bin/bash

# For CBZs downloaded with HakuNeko
# Ensure original folder of CBZs are in page-order when sorted alphabetically A-Z
# Rename covers to !000_cover.png/jpg

ORIGWORKDIR=$(pwd)

if [[ ! -z $1 ]]; then
	PRINWORKDIR="$1"
else
	PRINWORKDIR="./"
fi

function Merge()
{
	cd "$PRINWORKDIR"

	filearray=(`find ./ -maxdepth 1 -name "*.cbz"`)
	if [[ ${#filearray[@]} -gt 0 ]]; then
		echo "Files found.";
	else
		echo "Files not found. Exiting";
		exit;
	fi

	mkdir cbz_working

	if [[ -f "!000_cover.png" ]]; then
		echo "Found cover (png)"
		cp "!000_cover.png" cbz_working/
	elif [[ -f "!000_cover.jpg" ]]; then
		echo "Found cover (jpg)"
		cp "!000_cover.jpg" cbz_working/
	fi

	for f in *.cbz
	do
		DIR="./cbz_working/$f"
		unzip "$f" -d "$DIR"
		cd "$DIR"

		HEAD=$(basename "$f" .cbz)

		if [[ $HEAD == *":"* ]]; then
			HEAD=$(echo "$HEAD" | tr ":" "\n" | head -n 1)
		fi

		for g in *
		do
			mv "$g" "$HEAD"_"$g"
		done

		mv * ../
		cd ../../
		rmdir "$DIR"
	done

	cd cbz_working

	zip -mr "combined.zip" *
	mv "combined.zip" "combined.cbz"

	mv combined.cbz "$ORIGWORKDIR/"

	cd ..

	rmdir cbz_working

}

echo ""
echo "Operating from \"$ORIGWORKDIR\"."
while true; do
    read -p "Combining .cbz files in \"$PRINWORKDIR\". Proceed (y/n)? " yn
    case $yn in
        [Yy]* ) break;;
        [Nn]* ) exit;;
        * ) echo "Please answer yes or no.";;
    esac
done
echo ""

Merge