MTN Irancell data package price per gig

irancell_ppg.js

// Since MTN Irancell loves to experiment with their data packages and pricing
// i made this little snippet so I can easily choose a new package, fit for my
// needs and expectations instead of calculating the new PPGs every couple of
// month.
//
// Just run it in the console after page load and PPGs should replace the USSD
// Codes

const connection_speed = 20; // Mbps (approximate downlink speed)
const fair_usage_limit = 999; // GBs

function parseFarsiFloat(str) {
  return parseFloat(str.replace(/[۰-۹]/g, (m) => ({'۰': 0, '۱': 1, '۲': 2, '۳': 3, '۴': 4, '۵': 5, '۶': 6, '۷': 7, '۸': 8, '۹': 9})[m]));
}

jQuery('.mobileInternetPackagesCard').each((_, el) => {
  try {

    let $product = jQuery(el);
    let price    = $product.data('total-price');
    let gigs     = $product.data('size');
    let ppg      = price / gigs * 1000;

    if (gigs == -1) {
      // Calculate unlimited packages
      let hours = parseFarsiFloat($product.data('size-label').match(/[۰-۹0-9]+ ?ساعته/)[0]);
      gigs = Math.min(connection_speed / 8 * 3.6 * hours, fair_usage_limit);
      ppg  = price / gigs;
    }

    $product.find('.cardNetworkCoverage').text('به ازای هر گیگ');
    $product.find('.cardNetworkCoverage').append('<p>~' + (ppg).toFixed() + ' تومان</p>');

    $product.data('ppg', ppg);

  } catch (err) {
    return;
  }
}).detach().sort((a, b) => jQuery(a).data('ppg') - jQuery(b).data('ppg')).appendTo('#offers');