//native

type Brex = {

  token: string;

};

/**

 * Get an expense

 * Get an expense by its ID.

 */

export async function main(

  auth: Brex,

  id: string,

  expand__: string | undefined,

  load_custom_fields: string | undefined,

) {

  const url = new URL(`https://platform.brexapis.com/v1/expenses/${id}`);

  for (const [k, v] of [

    ["expand[]", expand__],

    ["load_custom_fields", load_custom_fields],

  ]) {

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

      url.searchParams.append(k, v);

    }

  }

  const response = await fetch(url, {

    method: "GET",

    headers: {

      Authorization: "Bearer " + auth.token,

    },

    body: undefined,

  });

  if (!response.ok) {

    const text = await response.text();

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

  }

  return await response.json();

}