#!/usr/bin/env sh

# author:	Daniel Sommer <daniel.sommer@velvettear.de>
# license:	MIT

[[ "$(id -u)" != "0" ]] && printf ">> error: permission denied\n" >&2 && exit 1

[[ -z "$1" ]] && printf ">> error: action unspecified\n" >&2 && exit 1

printf ">> podman control script started!\n\n"

current="$(pwd)"
what="podman-compose.yml"

path="$2"
[[ -z "$path" ]] && path="$(dirname $0)"
path="$(realpath $path)"
printf "> looking for '"$what"' files in '"$path"'...\n"
stacks="$(find "$path" -name 'podman-compose.yml')"

[[ -z "$stacks" ]] && printf ">> error: could not find any files\n" >&2 && exit 1

case "$1" in
	up|down|restart|upgrade|update)
	;;
	*)
	printf "error: action '"$1"' unknown\n" >&2 && exit 1
	;;
esac

for stack in $stacks; do
	dir="$(dirname "$stack")"
	name="$(basename "$dir")"
	cd "$dir"
	case "$1" in
		up)
		printf "\n>> starting '"$name"'..."
		podman-compose up -d &> /dev/null
		if [[ "$?" == "0" ]]; then
			printf " done!\n"
		else
			printf " error!\n"
		fi
		;;

		down)
		printf "\n>> stopping '"$name"'..."
		podman-compose down &> /dev/null
		if [[ "$?" == "0" ]]; then
			printf " done!\n"
		else
			printf " error!\n"
		fi
		;;

		restart)
		printf "\n>> restarting '"$name"'..."
		podman-compose restart &> /dev/null
		if [[ "$?" == "0" ]]; then
			printf " done!\n"
		else
			printf " error!\n"
		fi
		;;


		upgrade|update)
		printf "\n>> upgrading '"$name"'...\n"
		printf "> stopping '"$name"'..."
		podman-compose down &> /dev/null
		if [[ "$?" == "0" ]]; then
			printf " done!\n"
		else
			printf " error!\n"
			break
		fi
		printf "> removing image(s)..."
		podman image prune -a -f &> /dev/null
		if [[ "$?" == "0" ]]; then
			printf " done!\n"
		else
			printf " error!\n"
			break
		fi
		printf "> pulling new image(s) and restarting '"$name"'..."
		podman-compose up -d &> /dev/null
		if [[ "$?" == "0" ]]; then
			printf " done!\n"
		else
			printf " error!\n"
		fi
		;;
	esac
done

cd "$current"

msg="\n>> podman control script finished"
[[ "$SECONDS" ]] && msg="$msg after "$SECONDS" seconds"
printf "$msg!\n"