#!/bin/bash
set -euo pipefail

# ===== Konfiguration =====
SOURCE="/root/docker/dokuwiki/data"          # Root von DokuWiki (enthält data/)
BACKUPDIR="/root/dokuwiki_backup"
REMOTE_USER="backupuser"
REMOTE_HOST="backupserver"
REMOTE_PATH="/remote/backup/path"
RETENTION_DAYS=14

DATE=$(date +%F)
ARCHIVE="dokuwiki-rsit-$DATE.tar.gz"
HASHFILE="$ARCHIVE.sha256"

# Nur diese Teilpfade sichern (relativ zu $SOURCE)
INCLUDE_PATHS=(
  "data/meta/rsit"
  "data/media/rsit"
  "data/pages/rsit"
)

# ===== Vorbereitung =====
mkdir -p "$BACKUPDIR"

# ===== Prüfen, ob alle Pfade existieren (sonst hart abbrechen) =====
for p in "${INCLUDE_PATHS[@]}"; do
  if [[ ! -d "$SOURCE/$p" ]]; then
    echo "FEHLER: Verzeichnis fehlt: $SOURCE/$p" >&2
    exit 1
  fi
done

# ===== Archiv erstellen (Struktur bleibt erhalten) =====
tar -czf "$BACKUPDIR/$ARCHIVE" -C "$SOURCE" "${INCLUDE_PATHS[@]}"

# ===== Hash erzeugen =====
cd "$BACKUPDIR"
sha256sum "$ARCHIVE" > "$HASHFILE"

# ===== Upload =====
#rsync -avz "$ARCHIVE" "$HASHFILE" \
#  "${REMOTE_USER}@${REMOTE_HOST}:${REMOTE_PATH}/"

# ===== Alte Backups lokal löschen =====
find "$BACKUPDIR" -type f -mtime +"$RETENTION_DAYS" -name "dokuwiki-rsit-*.tar.gz" -delete
find "$BACKUPDIR" -type f -mtime +"$RETENTION_DAYS" -name "dokuwiki-rsit-*.sha256" -delete