#!/bin/bash


services=(coturn element etebase nginx-www searxng synapse syncthing vw)
needs_backup=(etebase synapse vw)


rel_path="$(dirname "$0")"


function pull {
	docker-compose -f "$rel_path/$1/docker-compose.yaml" pull
}


# Runs compose up & eventually make a backup before
# $1 = project name
function up {
	if echo "${needs_backup[*]}" | grep -qP "\b$1\b" && has_update "$1"; then
		sudo "$rel_path/backup.sh" "$1" --norestart
	fi

	docker-compose -f "$rel_path/$1/docker-compose.yaml" up -d
}


# To use after pulling latest images of project
# Checks if at least one container can be updated
# $1 = project name
function has_update {
	readarray -t cont_list < <(docker-compose -f "$rel_path/$1/docker-compose.yaml" ps -a | tail -n+3 | cut -d ' ' -f 1)
	for cont in "${cont_list[@]}"; do
		# Return true if container doesn't exist
		if ! docker ps -a --format='{{.Names}}' | grep -q "$cont"; then
			return 0
		fi
		cont_image_id="$(docker inspect "$cont" --format='{{.Image}}')"
		repo_url="$(docker inspect "$cont" --format='{{.Config.Image}}')"
		repo_image_id="$(docker image inspect "$repo_url" --format='{{.Id}}')"
		if [[ "$cont_image_id" != "$repo_image_id" ]]; then
			return 0
		fi
	done
	return 1
}


service="$(echo "$2" | sed -E 's/[/ ]//g')"


case "$1" in
	pull)
		if [[ -z "$service" ]]; then
			for serv in "${services[@]}"; do
				pull "$serv"
			done
		elif echo "${services[*]}" | grep -qP "\b$service\b"; then
			pull "$service"
		else
			echo "invalid project name. it should be one of: ${services[*]}."
		fi
		;;

	up)
		if [[ -z "$service" ]]; then
			for serv in "${services[@]}"; do
				pull "$serv"
				up "$serv"
			done
		elif echo "${services[*]}" | grep -qP "\b$service\b"; then
			pull "$service"
			up "$service"
		else
			echo "Invalid project name. It should be one of: ${services[*]}."
		fi
		;;

	*)
		echo "Invalid action. It should be one of: pull, up."
		;;
esac