#!/bin/sh
set -e

REPO="${HF_DATASET:-jay-hank/Nexova-storage}"
TOKEN="${HF_TOKEN}"
DB="./data/nexova.db"
INTERVAL="${BACKUP_INTERVAL:-1800}"

if [ -z "$TOKEN" ]; then
  echo "[backup] HF_TOKEN not set, disabled"
  exit 0
fi

echo "[backup] loop every ${INTERVAL}s -> $REPO"

while true; do
  sleep "$INTERVAL"
  if [ -f "$DB" ]; then
    SIZE=$(wc -c < "$DB")
    B64=$(base64 -w0 "$DB")
    TS=$(date -u +%FT%TZ)
    echo "[backup] uploading ($SIZE bytes)..."
    HTTP=$(curl -s -w "%{http_code}" -o /dev/null \
      -X POST "https://huggingface.co/api/datasets/$REPO/commit/main" \
      -H "Authorization: Bearer $TOKEN" \
      -H "Content-Type: application/json" \
      -d "{\"summary\":\"auto-backup $TS\",\"operations\":[{\"op\":\"upload\",\"path\":\"nexova.db\",\"encoding\":\"base64\",\"content\":\"$B64\"}]}")
    echo "[backup] HTTP $HTTP at $TS"
  fi
done