static async callSubscriptionsAPI()

in services/graph-api.js [57:97]
33 lines of code
3 McCabe index (conditional complexity)

  static async callSubscriptionsAPI(customFields) {
    // Send the HTTP request to the Subscriptions Edge to configure your webhook
    // You can use the Graph API's /{app-id}/subscriptions edge to configure and
    // manage your app's Webhooks product
    // https://developers.facebook.com/docs/graph-api/webhooks/subscriptions-edge
    console.log(
      `Setting app ${config.appId} callback url to ${config.webhookUrl}`
    );

    let fields =
      "messages, messaging_postbacks, messaging_optins, " +
      "message_deliveries, messaging_referrals";

    if (customFields !== undefined) {
      fields = fields + ", " + customFields;
    }

    console.log({ fields });

    let url = new URL(`${config.apiUrl}/${config.appId}/subscriptions`);
    url.search = new URLSearchParams({
      access_token: `${config.appId}|${config.appSecret}`,
      object: "page",
      callback_url: config.webhookUrl,
      verify_token: config.verifyToken,
      fields: fields,
      include_values: "true"
    });
    let response = await fetch(url, {
      method: "POST",
      headers: { "Content-Type": "application/json" }
    });
    if (response.ok) {
      console.log(`Request sent.`);
    } else {
      console.error(
        `Unable to callSubscriptionsAPI: ${response.statusText}`,
        await response.json()
      );
    }
  }