MMM-HomeAssistant.js

Module.register("MMM-HomeAssistant", {

    defaults: {
        updateInterval: 60000,
        homeAssistantUrl: "http://localhost:8123",
        accessToken: "YOUR_ACCESS_TOKEN",
        entities: []
    },

    start: function() {
        this.sendSocketNotification("GET_HOME_ASSISTANT_DATA", {
            homeAssistantUrl: this.config.homeAssistantUrl,
            accessToken: this.config.accessToken
        });
        this.scheduleUpdate();
    },

    getData: function() {
        var self = this;
        var url = this.config.homeAssistantUrl + "/api/states";
        var headers = {
            "Authorization": "Bearer " + this.config.accessToken
        };

        fetch(url, { headers: headers })
            .then(response => response.json())
            .then(data => {
                self.processData(data);
            })
            .catch(error => {
                console.error("Error fetching data from Home Assistant:", error);
            });
    },

    processData: function(data) {
        this.entities = data.filter(entity => {
            let configEntity = this.config.entities.find(e => e.entity_id === entity.entity_id);
            if (!configEntity) return false;

            if (configEntity.condition) {
                let conditionMet = false;
                let entityState = parseFloat(entity.state);
                let conditionValue = parseFloat(configEntity.condition.value);

                switch (configEntity.condition.operator) {
                    case "above":
                        conditionMet = entityState > conditionValue;
                        break;
                    case "below":
                        conditionMet = entityState < conditionValue;
                        break;
                    case "equal":
                        conditionMet = entityState === conditionValue;
                        break;
                    default:
                        conditionMet = true;
                }

                return conditionMet;
            }

            return true;
        });
        this.updateDom();
    },

    scheduleUpdate: function() {
        var self = this;
        setInterval(function() {
            self.getData();
        }, this.config.updateInterval);
    },

    getDom: function() {
        var wrapper = document.createElement("div");
        this.entities.forEach(entity => {
            var entityDiv = document.createElement("div");
            var unit = entity.attributes.unit_of_measurement ? ` ${entity.attributes.unit_of_measurement}` : "";
            var displayName = entity.attributes.friendly_name;

            let configEntity = this.config.entities.find(e => e.entity_id === entity.entity_id);
            if (configEntity) {
                if (configEntity.hide_friendly_name) {
                    displayName = configEntity.alternative_name || "";
                }
            }

            entityDiv.innerHTML = displayName ? `${displayName}: ${entity.state}${unit}` : `${entity.state}${unit}`;
            wrapper.appendChild(entityDiv);
        });

        return wrapper;
    },

    socketNotificationReceived: function(notification, payload) {
        if (notification === "HOME_ASSISTANT_DATA") {
            this.processData(payload);
        }
    }
});