Get tier group by Id

//native

type Brevo = {

  apiKey: string;

};

/**

 * Get tier group by Id

 * Returns the specified tier group for the specified loyalty program

 */

export async function main(

  auth: Brevo,

  loyaltyProgramId: string,

  tierGroupId: string,

  version: "active" | "draft" | undefined,

) {

  const url = new URL(

    `https://api.brevo.com/v3/loyalty/tier/programs/${loyaltyProgramId}/tier-groups/${tierGroupId}`,

  );

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

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

      url.searchParams.append(k, v);

    }

  }

  const response = await fetch(url, {

    method: "GET",

    headers: {

      "api-key": auth.apiKey,

    },

    body: undefined,

  });

  if (!response.ok) {

    const text = await response.text();

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

  }

  return await response.json();

}