miyagi-backup/miyagi-update.sh

#!/usr/bin/env bash
# miyagi-backup Updater v3
set -uo pipefail

DEV_MODE=0
INSTALL_DIR="/opt/miyagi-backup"
CONFIG_DIR="/etc/miyagi-backup"
HOOKS_DIR="${CONFIG_DIR}/hooks.d/pre-shutdown"
SYMLINK="/usr/local/bin/miyagi-backup"

GITHUB_BASE="https://raw.githubusercontent.com/bashclub/miyagi-backup/main"
GITEA_BASE="https://gitea.perlbach24.de/scripte/miyagi-backup/raw/branch/main"

CHECKZFS_URL="https://gitea.perlbach24.de/scripte/check-zfs-replication/raw/branch/main/checkzfs.py"
CHECK_SNAPSHOT_AGE_URL="https://gitea.perlbach24.de/scripte/check-zfs-replication/raw/branch/main/check-snapshot-age"
CLEANSNAPS_URL="https://raw.githubusercontent.com/bashclub/zfs-housekeeping/refs/heads/main/cleansnaps.sh"
DISK_SMART_INFO_URL="https://raw.githubusercontent.com/bashclub/checkmk-smart/main/disk_smart_info.py"

RED='\033[0;31m'; GREEN='\033[0;32m'; YELLOW='\033[1;33m'; BLUE='\033[0;34m'; NC='\033[0m'
ok()   { echo -e "${GREEN}[OK]${NC}  $*"; }
info() { echo -e "${BLUE}[..]${NC}  $*"; }
warn() { echo -e "${YELLOW}[!!]${NC}  $*"; }
die()  { echo -e "${RED}[ERR]${NC} $*" >&2; exit 1; }

usage() {
  cat <<EOF
Usage: $0 [--dev]

  --dev    Update von Gitea (dev) statt GitHub (stable)
  --help   Diese Hilfe
EOF
  exit 0
}

parse_args() {
  while [[ $# -gt 0 ]]; do
    case "$1" in
      --dev)  DEV_MODE=1; shift ;;
      --help) usage ;;
      *) die "Unbekannter Parameter: $1" ;;
    esac
  done
}

get_base_url() {
  [[ "$DEV_MODE" -eq 1 ]] && echo "$GITEA_BASE" || echo "$GITHUB_BASE"
}

# ── Self-Update ───────────────────────────────────────────────────────────────

self_update() {
  local base
  base="$(get_base_url)"
  local self="${INSTALL_DIR}/miyagi-update.sh"

  if [[ -f "$self" ]] && command -v curl >/dev/null; then
    curl -fsSL "${base}/miyagi-update.sh" -o "${self}.new" 2>/dev/null \
      && mv "${self}.new" "$self" \
      && chmod +x "$self" \
      && info "Updater aktualisiert" \
      || rm -f "${self}.new"
  fi
}

# ── miyagi-backup.sh updaten ─────────────────────────────────────────────────

update_miyagi() {
  local base
  base="$(get_base_url)"
  local source_label
  [[ "$DEV_MODE" -eq 1 ]] && source_label="Gitea (dev)" || source_label="GitHub (stable)"

  info "Aktualisiere miyagi-backup.sh von $source_label..."

  if [[ ! -d "$INSTALL_DIR" ]]; then
    warn "Installverzeichnis $INSTALL_DIR fehlt – bitte zuerst miyagi-install.sh ausführen"
    return 1
  fi

  curl -fsSL "${base}/miyagi-backup.sh" -o "${INSTALL_DIR}/miyagi-backup.sh.new" || {
    warn "Download fehlgeschlagen – miyagi-backup.sh bleibt unverändert"
    return 1
  }
  mv "${INSTALL_DIR}/miyagi-backup.sh.new" "${INSTALL_DIR}/miyagi-backup.sh"
  chmod +x "${INSTALL_DIR}/miyagi-backup.sh"

  # Symlink sicherstellen
  ln -sf "${INSTALL_DIR}/miyagi-backup.sh" "$SYMLINK"

  # config.example aktualisieren (nie .conf überschreiben)
  curl -fsSL "${base}/config.example" -o "${CONFIG_DIR}/config.example.new" 2>/dev/null \
    && mv "${CONFIG_DIR}/config.example.new" "${CONFIG_DIR}/config.example" \
    || warn "config.example konnte nicht aktualisiert werden"

  # Hooks-Verzeichnis sicherstellen
  mkdir -p "$HOOKS_DIR"

  # Example-Hook aktualisieren (nicht ausführbar = bleibt inaktiv)
  curl -fsSL "${base}/hooks.d/pre-shutdown/example-hook.sh" \
    -o "${HOOKS_DIR}/example-hook.sh" 2>/dev/null \
    && info "example-hook.sh aktualisiert" \
    || warn "example-hook.sh konnte nicht aktualisiert werden"

  ok "miyagi-backup.sh aktualisiert"
}

# ── Abhängigkeiten updaten (nur wenn bereits installiert) ─────────────────────

update_dep() {
  local name="$1"
  local url="$2"
  local target="$3"

  if [[ ! -f "$target" ]]; then
    info "$name nicht installiert – übersprungen (install mit miyagi-install.sh)"
    return 0
  fi

  info "Aktualisiere $name..."
  curl -fsSL "$url" -o "${target}.new" 2>/dev/null || {
    warn "$name Download fehlgeschlagen – bleibt unverändert"
    rm -f "${target}.new"
    return 1
  }
  mv "${target}.new" "$target"
  chmod +x "$target"
  ok "$name aktualisiert"
}

# ── Status-Zusammenfassung ────────────────────────────────────────────────────

print_status() {
  echo ""
  echo "  ┌──────────────────────────────────────────┐"
  printf "  │  %-40s│\n" "miyagi-backup $([ -f "${INSTALL_DIR}/miyagi-backup.sh" ] && echo "✓ installiert" || echo "✗ fehlt")"
  printf "  │  %-40s│\n" "checkzfs      $(command -v checkzfs &>/dev/null && echo "✓" || echo "✗ nicht installiert")"
  printf "  │  %-40s│\n" "check-snap-age $(command -v check-snapshot-age &>/dev/null && echo "✓" || echo "✗ nicht installiert")"
  printf "  │  %-40s│\n" "cleansnaps    $(command -v cleansnaps &>/dev/null && echo "✓" || echo "✗ nicht installiert")"
  printf "  │  %-40s│\n" "ethtool       $(command -v ethtool &>/dev/null && echo "✓" || echo "✗ nicht installiert")"
  echo "  └──────────────────────────────────────────┘"
  echo ""
}

# ── Main ──────────────────────────────────────────────────────────────────────

main() {
  [[ $EUID -ne 0 ]] && die "Bitte als root ausführen"

  echo ""
  echo "  ╔══════════════════════════════════════╗"
  echo "  ║     miyagi-backup Updater v3         ║"
  echo "  ╚══════════════════════════════════════╝"
  echo ""

  self_update
  update_miyagi

  update_dep "checkzfs"          "$CHECKZFS_URL"          "/usr/local/bin/checkzfs"
  update_dep "check-snapshot-age" "$CHECK_SNAPSHOT_AGE_URL" "/usr/local/bin/check-snapshot-age"
  update_dep "cleansnaps"        "$CLEANSNAPS_URL"         "/usr/local/bin/cleansnaps"
  update_dep "disk_smart_info"   "$DISK_SMART_INFO_URL"    "/usr/lib/check_mk_agent/plugins/disk_smart_info"

  print_status
  ok "Update abgeschlossen."
}

parse_args "$@"
main