type Asana = {

  token: string;

};

/**

 * Establish a webhook

 * Establishing a webhook is a two-part process.

 */

export async function main(

  auth: Asana,

  opt_pretty: string | undefined,

  opt_fields: string | undefined,

  body: {

    data?: {

      filters?: ({

        action?: string;

        fields?: string[];

        resource_subtype?: string;

        resource_type?: string;

        [k: string]: unknown;

      } & { [k: string]: unknown } & { [k: string]: unknown })[];

      resource: string;

      target: string;

      [k: string]: unknown;

    };

    [k: string]: unknown;

  }

) {

  const url = new URL(`https://app.asana.com/api/1.0/webhooks`);

  for (const [k, v] of [

    ["opt_pretty", opt_pretty],

    ["opt_fields", opt_fields],

  ]) {

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

      url.searchParams.append(k, v);

    }

  }

  const response = await fetch(url, {

    method: "POST",

    headers: {

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

      Authorization: "Bearer " + auth.token,

    },

    body: JSON.stringify(body),

  });

  if (!response.ok) {

    const text = await response.text();

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

  }

  return await response.json();

}