import { Router } from 'express';
import * as unitController from '../controllers/unit.controller.js';
import validate from '../middlewares/validate.js';
import verifyFirebaseToken from '../middlewares/verifyFirebaseToken.js';
import authorize from '../middlewares/authorize.js';
import methodNotAllowed from '../middlewares/methodNotAllowed.js';
import { decodeId } from '../utils/idCodec.js';
import { errorResponse } from '../utils/response.js';
import { createUnitSchema, updateUnitSchema } from '../validators/unit.validator.js';

const router = Router();

// Units are shared reference data most roles need to read (e.g. picking a
// unit on a BOQ line) — any authenticated user can list/view them, but only
// admins can create/edit/delete, unlike roles/permissions which are admin-only end to end.
router.use(verifyFirebaseToken);

router.param('id', (req, res, next, value: string) => {
  const decoded = decodeId(value);
  if (decoded === null) return void errorResponse(res, 'Invalid id', 400);
  req.params.id = String(decoded);
  next();
});

router.get('/', unitController.getUnits);
router.post('/', authorize('admin'), validate(createUnitSchema), unitController.createUnit);
router.all('/', methodNotAllowed('GET', 'POST'));

router.get('/:id', unitController.getUnit);
router.patch('/:id', authorize('admin'), validate(updateUnitSchema), unitController.updateUnit);
router.delete('/:id', authorize('admin'), unitController.deleteUnit);
router.all('/:id', methodNotAllowed('GET', 'PATCH', 'DELETE'));

export default router;