#!/usr/bin/env bash

set -Eeuo pipefail

WM_DEPLOY_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
# shellcheck source=remote-common.sh
source "$WM_DEPLOY_DIR/scripts/remote-common.sh"

server_ipv4=""
identity_file=""
revision="previous"

usage() {
  printf 'Verwendung: %s [--revision SHA|previous] [--host IPV4] [--identity DATEI] [--user BENUTZER]\n' "$0"
}

while [[ "$#" -gt 0 ]]; do
  case "$1" in
    --revision)
      [[ "$#" -ge 2 ]] || wm_local_die "Wert für --revision fehlt."
      revision="$2"
      shift 2
      ;;
    --host)
      [[ "$#" -ge 2 ]] || wm_local_die "Wert für --host fehlt."
      server_ipv4="$2"
      shift 2
      ;;
    --identity)
      [[ "$#" -ge 2 ]] || wm_local_die "Wert für --identity fehlt."
      identity_file="$2"
      shift 2
      ;;
    --user)
      [[ "$#" -ge 2 ]] || wm_local_die "Wert für --user fehlt."
      WATERMAPS_SSH_USER="$2"
      export WATERMAPS_SSH_USER
      shift 2
      ;;
    -h|--help)
      usage
      exit 0
      ;;
    *)
      wm_local_die "Unbekannte Option: $1"
      ;;
  esac
done

[[ "$revision" == "previous" || "$revision" =~ ^[0-9a-f]{40}$ ]] ||
  wm_local_die "--revision muss 'previous' oder eine vollständige Git-Commit-SHA sein."

wm_local_resolve_ssh "$server_ipv4" "$identity_file"
wm_local_wait_for_ssh
remote_prefix=""
if [[ -n "$WM_REMOTE_SUDO" ]]; then
  remote_prefix="$WM_REMOTE_SUDO "
fi

ssh "${WM_SSH_OPTIONS[@]}" "$WM_SSH_TARGET" \
  "${remote_prefix}/opt/watermaps/deploy/scripts/rollback.sh '$revision'"