#!/bin/bash

set -euf -o pipefail

versions=(
	"version-3.2.2"
	"version-3.2.1"
	"version-3.2.0"
	"version-3.1.1"
	"version-3.1.0"
	"version-3.0.0"
	"version-2.0.9"
	"version-2.0.8"
	"version-2.0.7"
	"version-2.0.6"
	"version-2.0.5"
	"version-2.0.4"
	"version-2.0.3"
	"version-2.0.2"
	"version-2.0.1"
	"version-2.0.0"
)

repos=(
	"test-encrypted:password-file"
	"test-non-encrypted"
)

function main {

	init_repos
	backup_versions

}

function init_repos {

	local repo

	for repo in "${repos[@]}"; do
		rm -rf "$(repo_path $repo)"
		zbackup_init $repo
	done

}

function backup_versions {

	local version

	for version in "${versions[@]}"; do

		echo "Adding version $version" >&2

		rm -rf "work/$version"
		mkdir "work/$version"

		{
			git archive --format tar "$version"
		} | {
			tar --extract --directory "work/$version"
		}

		for repo in "${repos[@]}"; do

			{
				tar --create --directory "work" "$version"
			} | {
				zbackup_backup $repo /$version.tar
			}

		done

		rm -rf "work/$version"

	done

}

function repo_path {

	local repository password_file

	IFS=":" read repository password_file <<<"$1"

	echo "work/$repository"

}

function repo_args {

	local repository password_file

	IFS=":" read repository password_file <<<"$1"

	if test "$password_file"; then
		echo "--password-file work/$password_file"
	else
		echo "--non-encrypted"
	fi

}

function zbackup_init {

	zbackup init \
		$(repo_args $1) \
		"$(repo_path $1)"

}

function zbackup_backup {

	zbackup backup \
		$(repo_args $1) \
		"$(repo_path $1)/backups$2"

}

main "$@"

# ex: noet ts=4 filetype=sh