#!/bin/bash

### FIXME: just for testing
echo $RESTIC_PASSWORD_FILE
echo $RESTIC_REPOSITORY
echo $AWS_ACCESS_KEY_ID
echo $AWS_SECRET_ACCESS_KEY

export DOCKER_CONTEXT=default

mkdir /tmp/backups
backup_path=/tmp/backups

mapfile -t services < <(docker service ls --format '{{ .Name }}')

# FIXME: just for testing
services=("cloud_local_db")

for service in "${services[@]}"; do
	echo "service: $service"
	details=$(docker service inspect "$service" --format "{{ json .Spec.Labels }}")
	if echo "$details" | jq -r '.["backupbot.backup"]' | grep -q 'true'; then
		pre=$(echo "$details" | jq -r '.["backupbot.backup.pre-hook"]')
		post=$(echo "$details" | jq -r '.["backupbot.backup.post-hook"]')
		path=$(echo "$details" | jq -r '.["backupbot.backup.path"]')

		if [ "$path" = "null" ]; then
			echo "ERROR: missing 'path' for $service"
			continue  # or maybe exit?
		fi

		container=$(docker container ls -f "name=$service" --format '{{ .ID }}')

		echo "backing up $service"
		test -d "$backup_path/$service" || mkdir "$backup_path/$service"

		if [ "$pre" != "null" ]; then
			# run the precommand
			# shellcheck disable=SC2086
			docker exec "$container" $pre
		fi

		# run the backup
		docker cp -a "$container:$path" "$backup_path/$service"

		if [ "$post" != "null" ]; then
			# run the postcommand
			# shellcheck disable=SC2086
			docker exec "$container" $post
		fi
	fi

	# Check if restic repo exists
	if [ -z "$(restic cat config)" ] 2>/dev/null; then
		echo "initializing restic repo"
		restic init "$backup_path"
	fi
	restic backup --tag coop-cloud "$backup_path" # --quiet
done