module.exports = function (RED) {
  function XilicaInterval(config) {
    RED.nodes.createNode(this, config);
    const node = this;

    node.interval = parseInt(config.interval, 10) || 100;

    node.on("input", (msg, send, done) => {
      send =
        send ||
        function () {
          node.send.apply(node, arguments);
        };
      done = done || function () {};

      let interval = node.interval;
      if (Object.prototype.hasOwnProperty.call(msg, "interval")) {
        const v = parseInt(msg.interval, 10);
        if (!Number.isNaN(v) && v > 0) {
          interval = v;
        }
      }

      msg.payload = "INTERVAL " + interval;

      send(msg);
      done();
    });
  }

  RED.nodes.registerType("xilica-interval", XilicaInterval);
};