var reg = (o, n) => o ? o[n] : '';
var cn = (o, s) => o ? o.getElementsByClassName(s) : console.log(o);
var tn = (o, s) => o ? o.getElementsByTagName(s) : console.log(o);
var gi = (o, s) => o ? o.getElementById(s) : console.log(o);
var rando = (n) => Math.round(Math.random() * n);
var unq = (arr) => arr.filter((e, p, a) => a.indexOf(e) == p);
var delay = (ms) => new Promise(res => setTimeout(res, ms));
var ele = (t) => document.createElement(t);
var attr = (o, k, v) => o.setAttribute(k, v);

async function getListingInfoByPage(p) {
  var res = await fetch("https://medium.com/_/api/users/7558e26f1503/followers?&page=" + p + "&fbclid=IwAR3Ddn76uLnRIpuVQLnnygTlSR9C1o_OUgCPlUFgx1zGg3dsJ3vthL30RPM", {
    "credentials": "include",
    "headers": {
      "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3",
      "accept-language": "en-US,en;q=0.9",
      "cache-control": "max-age=0",
      "upgrade-insecure-requests": "1"
    },
    "referrerPolicy": "no-referrer-when-downgrade",
    "body": null,
    "method": "GET",
    "mode": "cors"
  });
  var text = await res.text();
  var jdat = JSON.parse(text.replace(/.+?<\/x>/, ''));
  return jdat;
}

async function looper() {
  var temp = [];
  var totalPages = 10;
  for (var i = 2; i < totalPages; i++) {
    var dat = await getListingInfoByPage(i + 1);
    console.log(i);
    await delay(2000);
    var arr = dat.payload.value;
    arr.forEach(el => {
      if (temp.every(itm => itm.userId != el.userId)) temp.push(el)
    });
  }
  var output = convertToTSV(temp);
  downloadr(output, 'converted_file.tsv');

}


function downloadr(arr2D, filename) {
  var data = /\.json$|.js$/.test(filename) ? JSON.stringify(arr2D) : arr2D.map(el => el.reduce((a, b) => a + '\t' + b)).reduce((a, b) => a + '\r' + b);
  var type = /\.json$|.js$/.test(filename) ? 'data:application/json;charset=utf-8,' : 'data:text/plain;charset=utf-8,';
  var file = new Blob([data], {
    type: type
  });
  if (window.navigator.msSaveOrOpenBlob) {
    window.navigator.msSaveOrOpenBlob(file, filename);
  } else {
    var a = document.createElement('a'),
      url = URL.createObjectURL(file);
    a.href = url;
    a.download = filename;
    document.body.appendChild(a);
    a.click();
    setTimeout(() => {
      document.body.removeChild(a);
      window.URL.revokeObjectURL(url);
    }, 10);
  }
}

var dateifdate = (s) => {
  if ((typeof s == "number" || typeof s == "string") && /\b1[1-6]\d{11}\b/.test(s.toString())) {
    return new Date(s);
  } else {
    return s;
  }
};

function convertToTSV(fileArray) {
  var firstLevel = fileArray.map(el => Object.entries(el));
  var lens = Math.max(...firstLevel.map(el => el.length));
  var header = unq(firstLevel.map(el => el.map(itm => itm[0])).flat());
  var table = [header];
  var str = (o) => typeof o == 'object' ? JSON.stringify(o).replace(/\n|\r/g, ' ') : o.toString().replace(/\n|\r/g, ' ');
  for (var i = 0; i < firstLevel.length; i++) {
    var arr = [];
    var row = [];
    for (var s = 0; s < firstLevel[i].length; s++) {
      var place = header.indexOf(firstLevel[i][s][0]);
      arr[place] = dateifdate(firstLevel[i][s][1]);
    }
    for (var a = 0; a < arr.length; a++) {
      if (arr[a]) {
        row.push(arr[a]);
      } else {
        row.push('');
      }
    }
    table.push(row);
  }

  var output = table.map(el => el.map(itm => str(itm)));
  return output;
}
looper();