#!/usr/bin/env bash

set -eo pipefail

RCLONE_CONFIG="rclone.conf"
RCLONE_TARGET="minecraft:"
WORLDS_DIR="spigot/worlds"
WORLDS_DIR_BACKUP="$WORLDS_DIR.backup"
ARCHIVE_PREFIX="etc/mcserver/worlds"
SERVICE_NAME="spigot"

archive=$(rclone --config "$RCLONE_CONFIG" lsf "$RCLONE_TARGET" | sort --reverse | fzf --cycle)

if [[ -z $archive ]]; then
  echo "error: no archive file has been selected!" >&2
  exit 1
fi

target_dir=$(mktemp --directory)
target_archive="$target_dir/$archive"

echo "Downloading archive $archive to $target_archive ..."
rclone --config "$RCLONE_CONFIG" copy "$RCLONE_TARGET$archive" "$target_dir" --progress

if [[ -d $WORLDS_DIR_BACKUP ]]; then
  echo "Deleting old worlds dir backup ($WORLDS_DIR_BACKUP) ..."
  rm -rf "$WORLDS_DIR_BACKUP"
fi

echo "Un-zipping archive to $target_dir ..."
unzip "$target_archive" -d "$target_dir" 1>/dev/null

echo "Stopping server ..."
docker compose stop "$SERVICE_NAME"

echo "Backing up worlds dir ($WORLDS_DIR -> $WORLDS_DIR_BACKUP) ..."
mv "$WORLDS_DIR" "$WORLDS_DIR_BACKUP"

echo "Restoring world ($target_dir/$ARCHIVE_PREFIX -> $WORLDS_DIR) ..."
mv "$target_dir/$ARCHIVE_PREFIX" "$WORLDS_DIR"

echo "Re-starting server ..."
docker compose start "$SERVICE_NAME"

echo "Cleaning up ..."
rm -rf "$target_dir"