#!/bin/sh

usage() {
	cat << EOF
Usage: $0 [url] [filters] [-h|--help|--wget|--httrack]

  --wget      Select GNU Wget
  --httrack   Select httrack to vacuum
  -h,--help   Show this help

Filters only work with httrack. \`man httrack\` to get help
EOF
}

for i in "$@"; do
	if [ "$i" = "-h" ] || [ "$i" = "--help" ]; then
		usage
		exit 0
	elif [ "$i" != "--httrack" ]  && [ "$i" != "--wget" ]; then
		URL="$URL $i"
	elif [ "$i" = "--httrack" ]; then
		TOOL=httrack
	elif [ "$i" = "--wget" ]; then
		TOOL=wget
	fi
done

if [ -z "$URL" ]; then
	printf "Example: https://www.example.com +assets.example.com/*\n\n"

	while test -z "$URL"; do
		printf "URL: "
		read URL
	done
fi

if [ -z "$TOOL" ]; then
	while test -z "$TOOL"; do
		printf "Vacuum:\n"
		printf "  [1] httrack\n"
		printf "  [2] wget\n"
		printf "> [1] "
		read TOOL

		if [ -z "$TOOL" ]; then
			TOOL=1
		fi

		if [ "$TOOL" = "1" ] || [ "$TOOL" = "httrack" ]; then
			TOOL=httrack
		elif [ "$TOOL" = "2" ] || [ "$TOOL" = "wget" ]; then
			TOOL=wget
		else
			TOOL=
		fi
	done
fi

if [ "$TOOL" = "httrack" ]; then
	COMMAND="httrack $URL"
else
	COMMAND="wget --progress=bar -E -r -k -np --no-check-certificate --user-agent=Firefox $URL"
fi

cat << EOF
Command:

  $COMMAND

EOF

exec $COMMAND