#!/usr/bin/env bash

version="${1:?You need to specific a version, eg: v1.22.2}"
version_num="${version##v}"
package_name=filebrowser-${version_num}.tar.gz


# must occur dirs
material_dir="./materials"

# optional dirs (created during build)
download_dir="./var/downloads"
extract_dir="./var/extracted"
rootfs="./var/rootfs"

package_dir="./packages"


function copy_file {
	local src="$1"
	local dst="$2"

	# if ends with a splash
	if [[ "$dst" == */ ]] ; then
		mkdir -p $dst
		cp --target-directory $dst $src
	else
		local dst_dir=$(dirname $dst)

		mkdir -p $dst_dir
		cp --no-target-directory $src $dst
	fi
}


function download {
	# don't re-download if already downloaded
	if [ ! -f "${download_dir}/${package_name}" ] ; then
		mkdir -p ${download_dir}
		wget --output-document ${download_dir}/${package_name} https://github.com/filebrowser/filebrowser/releases/download/${version}/linux-amd64-filebrowser.tar.gz
	fi
}


function extract {
	rm -rf ${extract_dir}
	mkdir -p ${extract_dir}
	tar -xf ${download_dir}/${package_name} -C ${extract_dir}
}


function build_rootfs {
	rm -rf ${rootfs}

	copy_file ${extract_dir}/filebrowser ${rootfs}/usr/bin/filebrowser

	copy_file ${extract_dir}/CHANGELOG.md ${rootfs}/usr/share/filebrowser/
	copy_file ${extract_dir}/LICENSE      ${rootfs}/usr/share/filebrowser/
	copy_file ${extract_dir}/README.md    ${rootfs}/usr/share/filebrowser/

	copy_file ${material_dir}/filebrowser.service ${rootfs}/usr/lib/systemd/system/filebrowser.service
}


function package_meta {
	# debian packages meta file
	mkdir -p $rootfs/DEBIAN
	sed "s/+++VERSION+++/${version_num}/" > $rootfs/DEBIAN/control << EOF
Package: filebrowser
Version: +++VERSION+++
Priority: optional
Architecture: all
Maintainer: leafee98 <me@leafee98.com>
Description: Web File Browser
EOF

}


function main {
	download
	extract
	build_rootfs
	package_meta

	mkdir -p $package_dir
	dpkg-deb --build --root-owner-group $rootfs $package_dir/filebrowser-${version}.deb
}

main "$@"