node-red-contrib-bool-gate/nodes/and.js

Node RED node to include boolean logic gates

module.exports = function (RED) {
    "use strict";
    const RuleManager = require("../lib/RuleManager")
    var ruleManager = null;

    function andGateNode(n) {
        RED.nodes.createNode(this, n);
        var node = this;
        this.rules = n.rules || [];
        this.topic = n.outputTopic || null;
        this.type = n.gateType || "and";
        this.emitOnlyIfTrue = n.emitOnlyIfTrue || false;
        node.status({ fill: "blue", shape: "ring", text: "Loading..." });

        this.ruleManager = new RuleManager(RED, node, this.type);
        this.ruleManager.storeRule(this.rules).then((result) => {
            if (result)
                node.status({ fill: "green", shape: "dot", text: "TRUE" });
            else
                node.status({ fill: "red", shape: "dot", text: "FALSE" });

            if (this.emitOnlyIfTrue && result || !this.emitOnlyIfTrue)
                node.send({ topic: this.topic, payload: null, bool: result })
        })

        this.on('input', function (msg) {
            this.ruleManager.updateState(msg).then((result) => {
                if (result)
                    node.status({ fill: "green", shape: "dot", text: "TRUE" });
                else
                    node.status({ fill: "red", shape: "dot", text: "FALSE" });

                if (this.emitOnlyIfTrue && result || !this.emitOnlyIfTrue)
                    node.send({ topic: this.topic, payload: msg.payload || null, bool: result });
            })
        });
    }

    RED.nodes.registerType("and-gate", andGateNode);
}