// /components/expenses/expenseValidator.js
'use strict';

const AppError = require('../../utils/AppError');

const validateBody = (body, { isUpdate = false } = {}) => {
  const details = {};

  if (!isUpdate || body.title !== undefined) {
    if (!body.title || !String(body.title).trim()) {
      details.title = 'عنوان هزینه الزامی است';
    }
  }

  if (!isUpdate || body.amount !== undefined) {
    if (body.amount === undefined || body.amount === null || Number(body.amount) <= 0) {
      details.amount = 'مبلغ هزینه باید بیشتر از صفر باشد';
    }
  }

  if (!isUpdate || body.date !== undefined) {
    if (!body.date || Number.isNaN(new Date(body.date).getTime())) {
      details.date = 'تاریخ هزینه الزامی و باید معتبر باشد';
    }
  }

  if (Object.keys(details).length) {
    throw new AppError('VALIDATION_FAILED', details);
  }
};

const validateCreateExpense = (req, res, next) => {
  try {
    validateBody(req.body, { isUpdate: false });
    next();
  } catch (err) {
    next(err);
  }
};

const validateUpdateExpense = (req, res, next) => {
  try {
    validateBody(req.body, { isUpdate: true });
    next();
  } catch (err) {
    next(err);
  }
};

module.exports = { validateCreateExpense, validateUpdateExpense };