/**

 * @param fields *(optional)* A list of fields to return in the response.

 * Reference parameters of sub-objects with dot notation.

 *

 * @param exclude_fields *(optional)* A list of fields to exclude from the response.

 * Reference parameters of sub-objects with dot notation. If both `fields` and `exclude_fields`

 * are present, then only `exclude_fields` will be used.

 *

 * @param before_date_created *(optional)* Uses ISO 8601 time format: `2022-10-21T15:41:36+00:00`.

 * @param since_date_created *(optional)* Uses ISO 8601 time format: `2022-10-21T15:41:36+00:00`.

 * @param before_campaign_last_sent *(optional)* Uses ISO 8601 time format: `2022-10-21T15:41:36+00:00`.

 * @param since_campaign_last_sent *(optional)* Uses ISO 8601 time format: `2022-10-21T15:41:36+00:00`.

 */

type Mailchimp = {

  api_key: string;

  server: string;

};

export async function main(

  auth: Mailchimp,

  fields?: string[],

  exclude_fields?: string[],

  count?: number,

  offset?: number,

  sort_dir?: "" | "ASC" | "DESC",

  before_date_created?: string,

  since_date_created?: string,

  before_campaign_last_sent?: string,

  since_campaign_last_sent?: string,

  email?: string,

  sort_field?: "" | "date_created",

  has_ecommerce_store?: boolean,

  include_total_contacts?: boolean,

) {

  const url = new URL(`https://${auth.server}.api.mailchimp.com/3.0/lists`);

  const params = {

    fields,

    exclude_fields,

    count,

    offset,

    sort_dir,

    before_date_created,

    since_date_created,

    before_campaign_last_sent,

    since_campaign_last_sent,

    email,

    sort_field,

    has_ecommerce_store,

    include_total_contacts,

  };

  for (const key in params) {

    const value = params[<keyof typeof params>key];

    if (value) {

      url.searchParams.append(

        key,

        Array.isArray(value) ? value.join(",") : "" + value,

      );

    }

  }

  const response = await fetch(url, {

    method: "GET",

    headers: {

      Authorization: `Bearer ${auth.api_key}`,

    },

  });

  if (!response.ok) {

    throw Error(await response.text());

  }

  return await response.json();

}