type Cloudflare = {

  token: string;

  email: string;

  key: string;

};

/**

 * Get Dataset csv Stream

 * Get the csv content of a given dataset by alias or id. When getting the content by alias the latest dataset is returned, optionally filtered by the latest available at a given date.

 */

export async function main(

  auth: Cloudflare,

  alias: string,

  date: string | undefined

) {

  const url = new URL(

    `https://api.cloudflare.com/client/v4/radar/datasets/${alias}`

  );

  for (const [k, v] of [["date", date]]) {

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

      url.searchParams.append(k, v);

    }

  }

  const response = await fetch(url, {

    method: "GET",

    headers: {

      "X-AUTH-EMAIL": auth.email,

      "X-AUTH-KEY": auth.key,

      Authorization: "Bearer " + auth.token,

    },

    body: undefined,

  });

  if (!response.ok) {

    const text = await response.text();

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

  }

  return await response.text();

}