Gets a rule using a rule ID

//native

type Ably = {

  accessToken: string;

};

/**

 * Gets a rule using a rule ID

 * Returns the rule specified by the rule ID, for the application specified by application ID.

 */

export async function main(auth: Ably, app_id: string, rule_id: string) {

  const url = new URL(

    `https://control.ably.net/v1/apps/${app_id}/rules/${rule_id}`,

  );

  const response = await fetch(url, {

    method: "GET",

    headers: {

      Authorization: "Bearer " + auth.accessToken,

    },

    body: undefined,

  });

  if (!response.ok) {

    const text = await response.text();

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

  }

  return await response.json();

}