Add existing contacts to a list

//native

type Brevo = {

  apiKey: string;

};

/**

 * Add existing contacts to a list

 *

 */

export async function main(

  auth: Brevo,

  listId: string,

  body: { emails?: string[] } | { ids?: number[] } | { extIds?: string[] },

) {

  const url = new URL(

    `https://api.brevo.com/v3/contacts/lists/${listId}/contacts/add`,

  );

  const response = await fetch(url, {

    method: "POST",

    headers: {

      "Content-Type": "application/json",

      "api-key": auth.apiKey,

    },

    body: JSON.stringify(body),

  });

  if (!response.ok) {

    const text = await response.text();

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

  }

  return await response.json();

}