node-red-contrib-boolean-logic-ultimate/boolean-logic-ultimate/InvertUltimate.js

A set of Node-RED enhanced boolean logic and utility nodes, flow interruption, blinker, invert, filter, toggle etc.., with persistent values after reboot. Compatible also with Homeassistant values.

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

    function setNodeStatus({ fill, shape, text }) {
      let dDate = new Date();
      node.status({
        fill: fill,
        shape: shape,
        text:
          text +
          " (" +
          dDate.getDate() +
          ", " +
          dDate.toLocaleTimeString() +
          ")",
      });
    }

    setNodeStatus({ fill: "grey", shape: "dot", text: "Waiting" });

    this.on("input", function (msg) {
      // 11/11/2021 Clone input message and replace only relevant topics
      const utils = require("./utils.js");
      let sPayload = utils.fetchFromObject(
        msg,
        config.payloadPropName || "payload"
      );

      // 15/11/2021 inform user about undefined topic or payload
      if (sPayload === undefined) {
        setNodeStatus({
          fill: "red",
          shape: "dot",
          text: "Received invalid payload from " + msg.topic || "",
        });
        return;
      }

      var bRes = null;
      try {
        bRes = utils.ToBoolean(
          sPayload,
          RED.nodes.getNode(config.translatorConfig) // Retrieve the config node. It can be null, but it's handled in utils.js; // 15/11/2021 Convert input to boolean.);
        ); 
      } catch (error) {}
      if (bRes === undefined || bRes === null) {
        setNodeStatus({
          fill: "red",
          shape: "dot",
          text:
            "Received non convertible boolean value " +
            sPayload +
            " from " +
            msg.topic,
        });
        return;
      }

      var msgOUt = RED.util.cloneMessage(msg);
      try {
        msgOUt.payload = !bRes;
        setNodeStatus({
          fill: "green",
          shape: "dot",
          text: "(Send) " + msgOUt.payload,
        });
        node.send(msgOUt);
      } catch (error) {
        setNodeStatus({
          fill: "red",
          shape: "dot",
          text: "Unable to invert the input payload " + bRes,
        });
      }
    });
  }

  RED.nodes.registerType("InvertUltimate", InvertUltimate);
};