Get a field on a Card

type Trello = {

  key: string;

  token: string;

};

/**

 * Get a field on a Card

 * Get a specific property of a card

 */

export async function main(

  auth: Trello,

  id: string,

  field:

    | "id"

    | "address"

    | "badges"

    | "checkItemStates"

    | "closed"

    | "coordinates"

    | "creationMethod"

    | "dueComplete"

    | "dateLastActivity"

    | "desc"

    | "descData"

    | "due"

    | "dueReminder"

    | "email"

    | "idBoard"

    | "idChecklists"

    | "idLabels"

    | "idList"

    | "idMembers"

    | "idMembersVoted"

    | "idShort"

    | "idAttachmentCover"

    | "labels"

    | "limits"

    | "locationName"

    | "manualCoverAttachment"

    | "name"

    | "pos"

    | "shortLink"

    | "shortUrl"

    | "subscribed"

    | "url"

    | "cover"

    | "isTemplate"

) {

  const url = new URL(`https://api.trello.com/1/cards/${id}/${field}`);

  for (const [k, v] of [

    ["key", auth.key],

    ["token", auth.token],

  ]) {

    if (v !== undefined && v !== "") {

      url.searchParams.append(k, v);

    }

  }

  const response = await fetch(url, {

    method: "GET",

    headers: {

      Authorization: undefined,

    },

    body: undefined,

  });

  if (!response.ok) {

    const text = await response.text();

    throw new Error(`${response.status} ${text}`);

  }

  return await response.json();

}