/* eslint-disable no-console */
/**
 * scripts/nss-backfill-in-stock-qty.ts
 *
 * One-shot backfill for in_stock=true order_items rows whose
 * `qty_collected` was never stamped to match the customer quantity.
 *
 * The order process page's "in stock" toggle now stamps qty_collected
 * = quantity automatically (so the Invoicing page can bill those
 * rows at the customer-facing qty), but rows that were marked
 * in_stock before that fix shipped will still have qty_collected=0
 * — the Invoicing page reads min(qty_collected, quantity), so the
 * invoice line would land at 0 and the operator can't invoice the
 * customer.
 *
 * This script:
 *   1. Finds every order_item with in_stock=true AND
 *      qty_collected < quantity.
 *   2. Stamps qty_collected = quantity.
 *   3. Reports a count of rows touched.
 *
 * Idempotent — re-running is a no-op once all rows are aligned.
 *
 * Usage:
 *   npx tsx scripts/nss-backfill-in-stock-qty.ts
 */
import PocketBase from "pocketbase";
import { readFileSync, existsSync } from "node:fs";
import { resolve } from "node:path";

for (const file of [".env.local", ".env"]) {
  const path = resolve(process.cwd(), file);
  if (existsSync(path)) {
    const text = readFileSync(path, "utf8");
    for (const rawLine of text.split(/\r?\n/)) {
      const line = rawLine.trim();
      if (!line || line.startsWith("#")) continue;
      const eq = line.indexOf("=");
      if (eq <= 0) continue;
      const key = line.slice(0, eq).trim();
      let value = line.slice(eq + 1).trim();
      if (
        (value.startsWith('"') && value.endsWith('"')) ||
        (value.startsWith("'") && value.endsWith("'"))
      ) {
        value = value.slice(1, -1);
      }
      if (!process.env[key]) process.env[key] = value;
    }
    break;
  }
}

const url = process.env.NEXT_PUBLIC_POCKETBASE_URL ?? "http://127.0.0.1:8090";
const email = process.env.PB_ADMIN_EMAIL;
const password = process.env.PB_ADMIN_PASSWORD;
if (!email || !password) {
  console.error("PB_ADMIN_EMAIL / PB_ADMIN_PASSWORD are required (set in .env.local).");
  process.exit(1);
}

const pb = new PocketBase(url);
pb.autoCancellation(false);

async function main() {
  await pb.collection("_superusers").authWithPassword(email, password);
  console.log(`Connected to ${url} as ${email}.`);

  // Pull every order_item with in_stock=true. We filter in JS rather
  // than PB because qty_collected < quantity isn't trivially expressible
  // in PB filter syntax (would need to subtract via JS anyway).
  const all = await pb.collection("order_items").getFullList({
    filter: "in_stock = true",
    fields: "id,description,quantity,qty_collected,item_status,customer,order",
    batch: 500,
  });

  const stale = all.filter((it) => {
    const q = Number(it.quantity ?? 0);
    const qc = Number(it.qty_collected ?? 0);
    return q > 0 && qc < q;
  });

  console.log(
    `\nScanned ${all.length} in_stock rows; ${stale.length} have qty_collected < quantity and need a backfill.`,
  );

  if (stale.length === 0) {
    console.log("Nothing to do — all in_stock rows already have qty_collected = quantity.");
    return;
  }

  let updated = 0;
  for (const row of stale) {
    const q = Number(row.quantity ?? 0);
    try {
      await pb.collection("order_items").update(row.id, {
        qty_collected: q,
      });
      updated += 1;
      console.log(`  ✓ ${row.id}  qty=${q}  → qty_collected=${q}  (${String(row.description).slice(0, 50)})`);
    } catch (err) {
      console.error(`  ✗ ${row.id}  failed:`, err instanceof Error ? err.message : err);
    }
  }

  console.log(`\nDone. Stamped qty_collected = quantity on ${updated} rows.`);
}

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