#!/bin/sh
set -eu

[ -f /etc/backup.env ] && . /etc/backup.env

NTFY_URL="${NTFY_URL:-https://ntfy.ginnoir.com/backup}"
NTFY_TITLE="${NTFY_TITLE:-ValhallaBackup}"
KOPIA_PASSWORD="${KOPIA_REPOSITORY_PASSWORD:-${KOPIA_PASSWORD:-}}"

notify() {
  priority="$1"
  message="$2"
  curl -sf -H "Title: ${NTFY_TITLE}" -H "Priority: ${priority}" -d "${message}" "${NTFY_URL}" >/dev/null 2>&1 || true
}

if [ -z "${KOPIA_PASSWORD}" ]; then
  notify high "KOPIA_REPOSITORY_PASSWORD not set — snapshots skipped"
  exit 1
fi

if ! docker ps --format '{{.Names}}' | grep -qx kopia; then
  notify high "Kopia container not running — snapshots skipped"
  exit 1
fi

FAILED=0
while IFS= read -r path || [ -n "${path}" ]; do
  case "${path}" in ''|\#*) continue ;; esac
  if ! docker exec -e KOPIA_PASSWORD="${KOPIA_PASSWORD}" kopia kopia snapshot create "${path}"; then
    FAILED=1
  fi
done < /snapshot-paths.txt

if [ "${FAILED}" -eq 0 ]; then
  notify default "Snapshots OK ($(date +%Y-%m-%d\ %H:%M))"
else
  notify high "One or more snapshots FAILED — check docker logs kopia"
  exit 1
fi