import dotenv from "dotenv";
import path from "path";
dotenv.config({ path: path.resolve(__dirname, "../.env.local") });

import mongoose from "mongoose";
import { connectDb } from "../src/lib/server/db";
import { backfillPurchaseMovements } from "../src/lib/server/stock";

/**
 * One-off (safe to re-run): purchases recorded before the stock ledger
 * existed did not add stock. This adds the missing PURCHASE movements so
 * each branch's stock starts from what it actually bought.
 *
 *   npm run backfill:stock
 *
 * Run it once after deploying the stock ledger, BEFORE branches record
 * opening counts — a count recorded first already includes those units,
 * and backfilling afterwards would add them a second time.
 */
async function main() {
  await connectDb();
  const added = await backfillPurchaseMovements();
  console.log(`Added ${added} purchase stock movement(s).`);
  await mongoose.disconnect();
}

main().catch((err) => {
  console.error("backfill failed:", err.message);
  process.exit(1);
});