#!/bin/bash

today=$(date +'%F')
volumesdir="/var/lib/docker/volumes"
stackdir="/etc/komodo/stacks"
backupdir="/backups"

# Add services here to stop and backup.
services=(
  "$stackdir/caddy_housh_dev"
)

# Add volumes here to backup.
volumes=(
  "$volumesdir"
)

function stopServices() {
  echo "Stopping services..."
  for service in "${services[@]}"; do
    cd "$service" && docker compose stop
  done
}

function startServices() {
  echo "Restarting services..."
  for service in "${services[@]}"; do
    cd "$service" && docker compose up -d
  done
}

function copyStacks() {
  echo "Copying stack configuration..."
  local dir="$1/stacks"
  mkdir "$dir"
  for service in "${services[@]}"; do
    cp -R "$service" "$dir"
  done
}

function copyVolumes() {
  echo "Copying volumes..."
  local dir="$1/volumes"
  mkdir "$dir"
  for volume in "${volumes[@]}"; do
    cp -R "$volume" "$dir"
  done
}

function backup() {
  echo "Creating backup..."
  tar -cvf "/tmp/$today.tar" "$temp"
  gzip "/tmp/$today.tar"
  cp -R "/tmp/$today.tar.gz" "$backupdir"
  # Cleanup temporary files.
  rm -rf "$temp" "/tmp/$today.tar" "/tmp/$today.tar.gz"
}

function main() {
  # stop services.
  stopServices

  # Create a temporary directory.
  local temp="/tmp/$today"
  mkdir "$temp"

  # copy stack configuration.
  copyStacks "$temp"

  # Create a tar to backup.
  backup

  # Restart services.
  startServices
}

main "$@"