Script para obtener las facturas de AFIP por fechas dentro de Mis Comprobantes AFIP (https://serviciosjava2.afip.gob.ar/mcmp/jsp/comprobantesEmitidos.do)

facturas-afip-por-fechas.js

/**
@author Alejo Sotelo <alejosotelo.com.ar>
@date 2022-07-20
*/

async function getFacturas(from, to, tipoComprobante) {

  var query = encodeURIComponent(from + '+-+' + to + '&tiposComprobantes[]=' + tipoComprobante)

  var r = await fetch("https://serviciosjava2.afip.gob.ar/mcmp/jsp/ajax.do?f=generarConsulta&t=E&fechaEmision=" + query, {
    "credentials": "include",
    "headers": {
      "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Firefox/102.0",
      "Accept": "application/json, text/javascript, */*; q=0.01",
      "Accept-Language": "es-ES,es;q=0.8,en-US;q=0.5,en;q=0.3",
      "X-Requested-With": "XMLHttpRequest",
      "Sec-Fetch-Dest": "empty",
      "Sec-Fetch-Mode": "cors",
      "Sec-Fetch-Site": "same-origin",
      "Pragma": "no-cache",
      "Cache-Control": "no-cache"
    },
    "referrer": "https://serviciosjava2.afip.gob.ar/mcmp/jsp/comprobantesEmitidos.do",
    "method": "GET",
    "mode": "cors"
  });

  var response = await r.json();
  console.log(response);

  if (response.estado != 'ok') {
    console.log(response.mensajeError);
    return false;
  }

  r = await fetch("https://serviciosjava2.afip.gob.ar/mcmp/jsp/ajax.do?f=listaResultados&id=" + response.datos.idConsulta + "&_=1658359327266", {
    "credentials": "include",
    "headers": {
      "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Firefox/102.0",
      "Accept": "application/json, text/javascript, */*; q=0.01",
      "Accept-Language": "es-ES,es;q=0.8,en-US;q=0.5,en;q=0.3",
      "X-Requested-With": "XMLHttpRequest",
      "Sec-Fetch-Dest": "empty",
      "Sec-Fetch-Mode": "cors",
      "Sec-Fetch-Site": "same-origin",
      "Pragma": "no-cache",
      "Cache-Control": "no-cache"
    },
    "referrer": "https://serviciosjava2.afip.gob.ar/mcmp/jsp/comprobantesEmitidos.do",
    "method": "GET",
    "mode": "cors"
  });

  response = await r.json();
  console.log(response);

  if (response.estado != 'ok') {
    console.log(response.mensajeError);
    return false;
  }

  return response.datos.data.map(factura => {
    return {
      fecha: factura[0],
      tipoComprobante: factura[1],
      puntoDeVenta: factura[3],
      facturaNumero: factura[4],
      receptor: factura[11],
      receptorNombre: factura[12],
      importeTotal: factura[23]
    }
  });
}

function getFirstDayOfMonth(year, month) {
  return new Date(year, month, 1);
}

function getLastDayOfMonth(year, month) {
  return new Date(year, month + 1, 0)
}

function getFirstAndLastDayOfMonth(year, month) {
  return {
    first: getFirstDayOfMonth(year, month),
    last: getLastDayOfMonth(year, month)
  }
}

function padTo2Digits(num) {
  return num.toString().padStart(2, '0');
}

function formatDate(date) {
  return [
    padTo2Digits(date.getDate()),
    padTo2Digits(date.getMonth() + 1),
    date.getFullYear(),
  ].join('/');
}

async function getFacturasByYear(year, tipoComprobante) {
  var facturas = [];
  for (var i = 0; i <= 11; i++) {
    var month = getFirstAndLastDayOfMonth(year, i);
    var firstDay = formatDate(month.first);
    var lastDay = formatDate(month.last);
    var facturasByMonth = await getFacturas(firstDay, lastDay, tipoComprobante);
		facturas = [...facturas, ...facturasByMonth];
  }
	return facturas;
}

var pesoARS = Intl.NumberFormat("es-AR", {
    style: "currency",
    currency: "ARS",
});

var facturas = await getFacturasByYear(2022, 11);
console.log('Mis facturas', facturas);

var totalFacturado = facturas.reduce((total, item) => total + parseFloat(item.importeTotal), 0).toFixed(2);
console.log('El total facturado del año es de: %c' + pesoARS.format(totalFacturado), 'font-weight: bold;')