#!/bin/bash

shopt -s lastpipe

epub="$(zenity --file-selection)"
files="$(mktemp -d)"
unzip "$epub" -d "$files"

# get list of xhtml files to display
xhtmls="$(ls "$files"/OEBPS/*.xhtml | xargs -l basename)"

choosepart() {
	echo "$xhtmls" | zenity --list --title "epub parts | $epub" \
							--text "Choose a part" \
							--column "Parts" \
							--width 400 --height 400 \
		| read part

	if [ "$part" = "" ]; then
		exit 1
	fi

	echo part $part

	path="$files/OEBPS/$part"
	cat "$path" "$(dirname $0)/script.html" > "$path.html"

	firefox "$path.html"
}

while choosepart; do
	true
done

rm -rf "$files"