Send a WhatsApp message

//native

type Brevo = {

  apiKey: string;

};

/**

 * Send a WhatsApp message

 * This endpoint is used to send a WhatsApp message. (**The first message you send using the API must contain a Template ID. You must create a template on WhatsApp on the Brevo platform to fetch the Template ID.**)

 */

export async function main(

  auth: Brevo,

  body:

    | {

        templateId: number;

        senderNumber: string;

        params?: {};

        contactNumbers: string[];

      }

    | { senderNumber: string; text: string; contactNumbers: string[] },

) {

  const url = new URL(`https://api.brevo.com/v3/whatsapp/sendMessage`);

  const response = await fetch(url, {

    method: "POST",

    headers: {

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

      "api-key": auth.apiKey,

    },

    body: JSON.stringify(body),

  });

  if (!response.ok) {

    const text = await response.text();

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

  }

  return await response.json();

}