Codeck.io-Api: get info about card by it's three letter id

snippet-to-be-pasted-into-browser.js

let subdomain = YOUR_SUBDOMAIN;
let CARD_ID='123'

// turns the string representation of a card id into a number.
// `111` will become 1, `15z` will become 140
let convertIdToNumber = (seq) => {
  let startVal = 28 * 29 - 1;
  let implicitZero= true;
  let letters = "123456789acefghijkoqrsuvwxyz";
  let length = letters.length;
  let letterToIndex = Object.fromEntries(letters.split("").map((letter, index) => ([letter, index])));
  let intVal = letterToIndex[seq[0]] || 0;
  for (let i = 1; i < seq.length; i += 1) {
    if (implicitZero) intVal += 1;
    intVal *= length;
    intVal += letterToIndex[seq[i]];
  }
  return intVal - startVal;
}


// define condition by which to query the cards. We want to load the cards which have the corresponding `accountSeq`.
let cardQuery = {accountSeq: convertIdToNumber(CARD_ID),};

// build up the nested query and define which models and fields we want to receive
let query = {
  _root: [
    {
      account: [
        {
          [`cards(${JSON.stringify(cardQuery)})`]: [
            "title",
            "content",
            {attachments: [
              "title",
              {file: ["url"]}
            ]}
          ],
        },
      ],
    },
  ],
};

// pass the query to the api
let data = await fetch(`https://api.codecks.io?query=${JSON.stringify(query)}&x-account=${subdomain}`, {credentials: "include"}).then(r => r.json())
console.log(data)