// scripts/migrations/2026-07-15-add-stock-items-target-qty.ts
//
// One-shot schema migration: add a `target_qty` number field to the
// `stock_items` collection. Used by the bulk-PO-from-low-stock flow
// (see src/app/(app)/stock-orders/new/page.tsx) to compute the order
// qty per line: `order_qty = max(0, target_qty - current_qty)`. Items
// with `target_qty` unset or 0 are opted out of the bulk flow.
//
// Idempotent: re-running is a no-op when the field is already present.

/* eslint-disable */
import { readFileSync } from "node:fs";
import { resolve } from "node:path";

function loadEnvFile(name: string) {
  try {
    const raw = readFileSync(resolve(process.cwd(), name), "utf8");
    for (const line of raw.split("\n")) {
      const trimmed = line.trim();
      if (!trimmed || trimmed.startsWith("#")) continue;
      const m = trimmed.match(/^([A-Z0-9_]+)\s*=\s*(.+)$/i);
      if (m && !process.env[m[1]]) {
        process.env[m[1]] = m[2].replace(/^["']|["']$/g, "").trim();
      }
    }
  } catch {
    // .env.local doesn't exist — fall through; PB env vars may be
    // set in the shell.
  }
}

loadEnvFile(".env.local");

import { getAdminPocketBase } from "@/lib/server/pocketbase-admin";

const COLLECTION_NAME = "stock_items";
const FIELD_NAME = "target_qty";

async function main() {
  const pb = await getAdminPocketBase();

  const collection = await pb.collections.getOne(COLLECTION_NAME);
  const existing = (collection.fields ?? []) as Array<{ name: string }>;
  if (existing.some((f) => f.name === FIELD_NAME)) {
    console.log(`[stock-items-target-qty] field already present on ${COLLECTION_NAME}`);
    return;
  }

  const newField = {
    name: FIELD_NAME,
    type: "number",
    required: false,
    options: {
      min: 0,
      noDecimal: false,
    },
  };

  await pb.collections.update(collection.id, {
    fields: [...existing, newField],
  });

  console.log(
    `[stock-items-target-qty] created field on ${COLLECTION_NAME} (number, optional, min 0)`,
  );
}

main().catch((err) => {
  console.error("[stock-items-target-qty] failed:", err);
  process.exit(1);
});