FreeTaxUSA capital gains script

gains.js

// Copyright 2022 Google LLC.
// SPDX-License-Identifier: Apache-2.0

// This is not an officially supported Google product. They just technically own it because I work for them.

// A function to programatically enter non-1099-B capital gains/losses into FreeTaxUSA.
// Because I'd rather run a script for half an hour than pay for tax preparation software with an import button.
// Run in browser console.

const process = async (description, acq_date, basis, sold_date, proceeds, wash_sale_amount) => {
  submitButton('BUTTON_YES',document.querySelector('a.button1'));
  while (!document.getElementById('sale_type-I')) {
    await new Promise(r => setTimeout(r, 100));
  }
  document.getElementById('sale_type-I').checked = true;
  submitButton('BUTTON_DONE',document.querySelector('a.button1'));
  while (!document.getElementById('temp_inv_desc')) {
    await new Promise(r => setTimeout(r, 100));
  }
  document.getElementById('temp_inv_desc').value = description;
  document.getElementById('acq_date').value = acq_date;
  document.getElementById('sold_date').value = sold_date;
  document.getElementById('sale_price').value = proceeds;
  document.getElementById('temp_basis').value = basis;
  document.getElementById('basis_shown-C').checked = true;
  submitButton('BUTTON_DONE',document.querySelector('a.button1'));
  while (!document.getElementById('is_adjustments-help-3')) {
    await new Promise(r => setTimeout(r, 100));
  }
  submitButton('BUTTON_DONE',document.querySelector('a.button1'));
  if (parseInt(proceeds) < parseInt(basis)) {
    while (!document.getElementById('is_wash-1')) {
      await new Promise(r => setTimeout(r, 100));
    }
    if (parseInt(wash_sale_amount)) {
      document.getElementById('is_wash-1').checked = true;
      submitButton('BUTTON_DONE',document.querySelector('a.button1'));
      while (!document.getElementById('temp_disallowed_wash')) {
        await new Promise(r => setTimeout(r, 100));
      }
      document.getElementById('temp_disallowed_wash').value = 
	    Math.min(parseInt(wash_sale_amount), parseInt(basis) - parseInt(proceeds));
    }
    submitButton('BUTTON_DONE',document.querySelector('a.button1'));
  }
  while (document.querySelectorAll('a.button1').length !== 4) {
    await new Promise(r => setTimeout(r, 100));
  }
};

// Example usage:

let rows = `10675.84 DOGE  3/10/2018  45  1/29/2021  734  0
97.237459 DOGE  1/29/2021  7  1/29/2021  5  2
934.252541 DOGE  1/29/2021  45  1/29/2021  44  0`.split('\n');

(async () => {
  let i = 0;
  for (const row of rows) {
    console.log(i++, row);
    const values = row.split('\t');
    await process(...values);
    await new Promise(r => setTimeout(r, 1000));
  }
})();