/* eslint-disable no-console */
/**
 * scripts/nss-add-invoice-columns.ts
 *
 * One-shot migration to add the missing `qty_invoiced`,
 * `customer_invoice_number`, and `invoiced_date` columns to the
 * `order_items` PB collection. The codebase has been writing to these
 * fields for months and PB silently dropped every write because the
 * columns didn't exist — that bug caused INV10924 on Kusasalethu PO
 * 390588 to leave 5 units unaccounted-for. This script adds the
 * columns so the reconcile / data-fix scripts can persist the data.
 *
 * Idempotent: re-running with the columns already present is a no-op
 * (the script detects the field by name and skips if it already
 * exists).
 *
 * Usage:
 *   npx tsx scripts/nss-add-invoice-columns.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 COLLECTION = "order_items";
const NEW_FIELDS = [
  {
    name: "qty_invoiced",
    type: "number" as const,
    required: false,
    presentable: false,
    options: { min: 0, max: null, noDecimal: true },
  },
  {
    name: "customer_invoice_number",
    type: "text" as const,
    required: false,
    presentable: false,
    options: { min: 0, max: 100, pattern: "" },
  },
  {
    name: "invoiced_date",
    type: "date" as const,
    required: false,
    presentable: false,
    options: { min: "", max: "" },
  },
];

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

  const collection = await pb.collections.getOne(COLLECTION);
  const existingNames = new Set((collection.fields ?? []).map((f) => f.name));
  const toAdd = NEW_FIELDS.filter((f) => !existingNames.has(f.name));

  if (toAdd.length === 0) {
    console.log(
      `All 3 columns already present on ${COLLECTION}. No-op.`,
    );
    return;
  }

  console.log(
    `Adding ${toAdd.length} column(s) to ${COLLECTION}: ${toAdd
      .map((f) => f.name)
      .join(", ")}`,
  );
  const nextFields = [
    ...(collection.fields ?? []),
    ...toAdd.map((f) => ({
      ...f,
      system: false,
      hidden: false,
    })),
  ];
  // PB's collection API expects the fields array (NOT `schema` — that's
  // the Go API shape). The SDK serialises `fields` straight through.
  await pb.collections.update(collection.id, {
    fields: nextFields.map((f) => ({
      name: f.name,
      type: f.type,
      required: f.required,
      presentable: f.presentable,
      hidden: f.hidden,
      system: f.system,
      options: f.options,
    })),
  });

  // Verify the columns landed.
  const refreshed = await pb.collections.getOne(COLLECTION);
  const verifiedNames = new Set((refreshed.fields ?? []).map((f) => f.name));
  for (const f of toAdd) {
    if (!verifiedNames.has(f.name)) {
      throw new Error(`Column "${f.name}" did not appear after update — aborting.`);
    }
  }
  console.log(`Verified: ${toAdd.map((f) => f.name).join(", ")} present on ${COLLECTION}.`);
  console.log("\nNext steps:");
  console.log(`  1. Re-run scripts/nss-fix-kusasalethu-inv10924.ts to back-fill INV10924 on the Kusasalethu PO 390588 lines.`);
  console.log(`  2. The new columns are now writable from /api/v1/orders/reconcile-invoice and the DN-invoice route.`);
}

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