#!/bin/bash

set -eu
#set -x

function urldecode { : "${*//+/ }"; echo -e "${_//%/\\x}"; }

function version_from_filename {
	echo "$1" | awk -F"-" '{print $2}'
}

function h5ai_query {
	component=${1:-core}
	distribution=${2:-Debian_9.0}

	filename=$(curl -s -S -L -d "action=get&items%5Bhref%5D=%2Fcommunity%2F$component%3A%2F&items%5Bwhat%5D=1" -H \
				"Accept: application/json" https://download.kopano.io/community/ | jq -r '.items[].href' | \
				grep "$distribution-all\|$distribution-amd64" | sed "s#/community/$component:/##")

	if [ -z "${filename// }" ]; then
		echo "unknown component"
		exit 1
	fi

	filename=$(urldecode "$filename")
	echo "$filename"
}

function dl_and_package_community {
	# take component as first argument and fallback to core if none given
	component=${1:-core}
	distribution=${2:-Debian_9.0}

	# query community server by h5ai API
	filename=$(h5ai_query "$component" "$distribution")

	# download & extract packages
	curl -s -S -L -o "$filename" https://download.kopano.io/community/"$component":/"${filename}"
	tar xf "$filename"

	# save buildversion
	currentVersion=$(version_from_filename "$filename")
	echo "$component-$currentVersion" >> /kopano/buildversion

	# save disk space
	rm "$filename"

	mv "${filename%.tar.gz}" "$component"

	# prepare directory to be apt source
	cd "$component"
	apt-ftparchive packages . | gzip -9c > Packages.gz
	cd ".."
}