/* eslint-disable */
// scripts/migrations/2026-07-15-stock-purchase-line-state.ts
//
// One-shot schema migration for the v2 stock-order driver flow:
//
//   1. `stock_purchases` — add a `documents` file field for the
//      generated PO PDF (and any other attachments the operator
//      wants to send to the supplier).
//   2. `stock_purchase_items` — add a `status` select field for the
//      per-line state machine
//      (collection_pool | assigned_to_driver | collected | booked)
//      and an `assigned_at` date field for the driver-assignment
//      timestamp.
//
// Idempotent: re-running is a no-op when the fields are already
// present.

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 may not exist; fall through.
  }
}

loadEnvFile(".env.local");

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

const STOCK_PURCHASES = "stock_purchases";
const STOCK_PURCHASE_ITEMS = "stock_purchase_items";

const LINE_STATUS_VALUES = [
  "collection_pool",
  "assigned_to_driver",
  "collected",
  "booked",
];

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

  // ── 1. stock_purchases.documents ──────────────────────────────
  {
    const col = await pb.collections.getOne(STOCK_PURCHASES);
    const fields = (col.fields ?? []) as Array<{ name: string }>;
    if (fields.some((f) => f.name === "documents")) {
      console.log(`[stock-purchase-line-state] stock_purchases.documents already present`);
    } else {
      const newField = {
        name: "documents",
        type: "file",
        required: false,
        presentable: false,
        protected: false,
        maxSelect: 5, // mirror the customer PO: up to 5 attachments
        maxSize: 0, // no PB cap
        mimeTypes: null,
        thumbs: null,
      };
      await pb.collections.update(col.id, { fields: [...fields, newField] });
      console.log(
        `[stock-purchase-line-state] added documents (file, multi, any mime) to stock_purchases`,
      );
    }
  }

  // ── 2. stock_purchase_items.status + assigned_at ─────────────
  {
    const col = await pb.collections.getOne(STOCK_PURCHASE_ITEMS);
    const fields = (col.fields ?? []) as Array<{ name: string }>;
    let next = fields;
    let added = false;

    if (!fields.some((f) => f.name === "status")) {
      // Append at the end so existing reads / field indexes aren't
      // disturbed. Select field with the 4 state values.
      next = [
        ...next,
        {
          name: "status",
          type: "select",
          required: false,
          maxSelect: 1,
          values: LINE_STATUS_VALUES,
        },
      ];
      added = true;
    }

    if (!fields.some((f) => f.name === "assigned_at")) {
      // Mirrors `order_items.assigned_at` — the timestamp the line
      // was bound to a driver. `null` = unassigned. We don't make it
      // required because lines that haven't been sent yet (status
      // null) have no assignment.
      next = [
        ...next,
        {
          name: "assigned_at",
          type: "date",
          required: false,
          presentable: false,
        },
      ];
      added = true;
    }

    if (added) {
      await pb.collections.update(col.id, { fields: next });
      console.log(
        `[stock-purchase-line-state] added status (select) + assigned_at (date) to stock_purchase_items`,
      );
    } else {
      console.log(
        `[stock-purchase-line-state] stock_purchase_items.status + assigned_at already present`,
      );
    }
  }

  console.log(
    `[stock-purchase-line-state] done. Verify via PB admin or by running the existing service tests.`,
  );
}

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