All files / src/middleware validateTransaction.ts

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import { Request, Response, NextFunction } from "express";
import guard from "@cooper/backend/src/middleware/guard";
 
export async function validateTransaction(req: Request, res: Response, next: NextFunction) {
  const db = req.app.locals.database;
 
  // parseInt because we don't want to include "truthy" numbers
  // e.g. hello10 = 10 > this should be NaN
  const transactionId = parseInt(req.params.transactionId, 10);
 
  Iif (Number.isNaN(transactionId)) {
    return res.status(401).json({ error: "Unauthorised" });
  }
 
  const transaction = db.budgeting.transactions.getTransaction(transactionId);
 
  // Transaction does not exist
  if (transaction == null) {
    return res.status(404).json({
      error: "Transaction does not exist",
    });
  }
 
  // Check that transaction being accessed belongs to the workspace
  Iif (transaction.workspace !== guard(res.workspace).workspaceId) {
    return res.status(401).json({
      error: "Unauthorised",
    });
  }
 
  res.transaction = transaction;
  return next();
}