// scripts/migrations/2026-08-06-stock-purchases-additional-attachments.ts
//
// One-shot schema migration: add an `additional_attachments` file
// field to the `stock_purchases` collection. Mirrors the
// `purchase_orders.additional_attachments` field added by
// `2026-07-09-po-additional-attachments.ts`.
//
// Why this exists: stock POs didn't have a place to attach supplier
// invoices, packing slips, or photos of damaged stock. The
// `documents` / `documents_history` fields are the versioned-PDF
// ledger for the operator-generated PO PDF, so we add a sibling
// field rather than reusing `documents`.
//
// The MCP `stock_purchases.add_attachment` tool, the REST upload /
// delete routes under `/api/v1/stock-purchases/[id]/attachments/...`,
// and the AttachmentsCard on `/stock-orders/[id]` all depend on this
// field existing in PB.
//
// Idempotent: re-running is a no-op when the field is already present.

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

const COLLECTION_NAME = "stock_purchases";
const FIELD_NAME = "additional_attachments";

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-purchases-additional-attachments] field already present on ${COLLECTION_NAME}`,
    );
    return;
  }

  // PB file-field convention: `maxSelect: 0` means "no cap" (the
  // route enforces 25 MB per file via MAX_BYTES). Matches the PO
  // migration exactly.
  const newField = {
    name: FIELD_NAME,
    type: "file",
    required: false,
    presentable: false,
    protected: false,
    maxSelect: 0,
    maxSize: 0,
    mimeTypes: null,
    thumbs: null,
  };

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

  console.log(
    `[stock-purchases-additional-attachments] created field on ${COLLECTION_NAME} (file, multi, any mime)`,
  );
}

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