#!/bin/bash
set -e

REQUIRED_CMDS=(curl tar date)
PKGS_MISSING=()

# Проверка наличия команд
for cmd in "${REQUIRED_CMDS[@]}"; do
  if ! command -v "$cmd" >/dev/null 2>&1; then
    PKGS_MISSING+=("$cmd")
  fi
done

install_packages() {
  PKGS=("$@")
  # Для Alpine
  if command -v apk >/dev/null 2>&1; then
    apk add --no-cache "${PKGS[@]}"
  # Для Debian/Ubuntu
  elif command -v apt-get >/dev/null 2>&1; then
    apt-get update && apt-get install -y "${PKGS[@]}"
  # Для Fedora
  elif command -v dnf >/dev/null 2>&1; then
    dnf install -y "${PKGS[@]}"
  # Для CentOS/RHEL
  elif command -v yum >/dev/null 2>&1; then
    yum install -y "${PKGS[@]}"
  # Для openSUSE
  elif command -v zypper >/dev/null 2>&1; then
    zypper install -y "${PKGS[@]}"
  # Для Arch
  elif command -v pacman >/dev/null 2>&1; then
    pacman -Sy --noconfirm "${PKGS[@]}"
  else
    echo "Не удалось определить пакетный менеджер для установки: ${PKGS[*]}"
    exit 1
  fi
}

if [[ ${#PKGS_MISSING[@]} -gt 0 ]]; then
  if [[ "$EUID" -ne 0 ]]; then
    echo "Зависимости отсутствуют: ${PKGS_MISSING[*]}"
    echo "Запустите скрипт от root для автоустановки!"
    exit 1
  fi
  echo "Необходимые пакеты отсутствуют: ${PKGS_MISSING[*]}"
  echo "Пробую установить..."
  install_packages "${PKGS_MISSING[@]}"
fi

# ПАРСИНГ ПАРАМЕТРОВ
while [[ $# -gt 0 ]]; do
  case "$1" in
    --token)
      TOKEN="$2"
      shift 2
      ;;
    --user_id)
      USER_ID="$2"
      shift 2
      ;;
    *)
      echo "Unknown option: $1"
      exit 1
      ;;
  esac
done

if [[ -z "$TOKEN" || -z "$USER_ID" ]]; then
  echo "Usage: $0 --token <TOKEN> --user_id <user_id>"
  exit 1
fi

# 1. cd /
cd /

# 2. vaultwarden backup
if ! /vaultwarden backup; then
  echo "vaultwarden backup failed"
  exit 1
fi

# 3. create archive /data
NOW=$(date '+%Y-%m-%d_%H-%M-%S')
ARCHIVE="/tmp/vaultwarden_backup_${NOW}.tar.gz"

tar -czf "$ARCHIVE" /data

# 4. send archive user <user_id> in telegram
response=$(curl -s -F chat_id="$USER_ID" \
  -F document=@"$ARCHIVE" \
  "https://api.telegram.org/bot${TOKEN}/sendDocument")

if ! echo "$response" | grep -q '"ok":true'; then
  echo "Failed to send archive to telegram: $response"
  exit 1
fi

# 5. rm archive
rm -f "$ARCHIVE"

# 6. rm /data/db_*
rm -f /data/db_*

echo "Backup and send complete."