#!/usr/bin/env bash
set -Eeuo pipefail

SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
cd "$SCRIPT_DIR"

APP="raspi-backup"
STATE_DIR="${XDG_STATE_HOME:-$HOME/.local/state}/${APP}"
LOG_FILE="${STATE_DIR}/${APP}.log"

mkdir -p "$STATE_DIR"

log() {
  echo "[$(date '+%Y-%m-%d %H:%M:%S')] $*" | tee -a "$LOG_FILE" >/dev/null
}

write_config_if_missing() {
  local cfg="$SCRIPT_DIR/config.sh"

  if [[ -f "$cfg" ]]; then
    log "config.sh existiert: $cfg"
    return 0
  fi

  cat >"$cfg" <<'EOF'
#!/usr/bin/env bash
# zentrale Konfig (auto-generated) – bitte nur ändern wenn du willst.

# NAS Fixwerte
NAS_HOST="10.0.0.101"
NAS_USER="mexx"
NAS_PORT="222"

# SSH / Alias
KEY_TYPE="ed25519"
ALIAS_PREFIX="nas"          # Alias wird: nas-<hostname>

# lokaler User, dem der SSH-Key gehört (NICHT root)
SSH_USER="admin"

# ---------- NAS Pfade (deine Vorgaben) ----------
# Zugriffskontrolle (Keys):
NAS_AUTH_KEYS_FILE="/var/services/homes/mexx/raspberry/sshkeys/authorized_keys"

# Backups (Daten):
NAS_BACKUP_BASE="/volume1/homes/mexx/raspberry/backup"
# Remote Ziel wird dann: ${NAS_BACKUP_BASE}/<hostname>/

# Retention (Tage)
KEEP_DAYS="21"

# Excludes
EXCLUDES=(
  "/dev/*"
  "/proc/*"
  "/sys/*"
  "/tmp/*"
  "/run/*"
  "/mnt/*"
  "/media/*"
  "/lost+found"
  "/var/cache/apt/archives/*"
)

# Rsync Extras
RSYNC_EXTRA=(
  "--partial"
  "--partial-dir=.rsync-partial"
)
EOF

  chmod +x "$cfg" || true
  log "config.sh erzeugt: $cfg"
}

write_config_if_missing
log "Setup OK (ohne lib.sh)."
echo "Setup OK."
echo "Config: $SCRIPT_DIR/config.sh"
echo "Log:    $LOG_FILE"