MMM-shabbat.js

/* Magic Mirror
 * Module: Pi-Hole Stats
 *
 * By Sheya Bernstein https://github.com/sheyabernstein/MMM-shabbat
 * MIT Licensed.
 */

Module.register("MMM-shabbat", {

    // Default module config.
    defaults: {
        minutesBefore: "18",
        minutesAfter: "50",
        ashkenaz: true,

        latitude: "",
        longitude: "",
        tzid: "",

        updateInterval:  30 * 60 * 1000, // every thirty minutes
        animationSpeed: 1000,

        retryDelay: 2500,
        initialLoadDelay: 0,

        modulesHidden: false, // don't change
    },

    // Define required scripts.
    getScrips: function() {
        return ["moment.min.js"];
    },

    // Define start sequence.
    start: function() {
        Log.info("Starting module: " + this.name);

        this.items = [];
        this.loaded = false;
        this.scheduleUpdate(this.config.initialLoadDelay);
    },

    // Override dom generator.
    getDom: function() {
        var wrapper = document.createElement("div");

        var requiredConfigs = ["latitude", "longitude", "tzid"]

        for (var i in requiredConfigs) {
        	req = requiredConfigs[i]
        	if (this.config[req] === "") {
        		wrapper.innerHTML = "Please set the correct <i>" + req + "</i> in the config for module " + this.name + ".";
            	wrapper.className = "dimmed light small";
            	return wrapper;
        	}
        }

        if (!this.loaded) {
            wrapper.innerHTML = this.translate("LOADING");
            wrapper.className = "dimmed light";
            return wrapper;
        }

        var events = {};

        for (var i in this.items) {
            var item = this.items[i];
            var date = moment(item["date"]).calendar().split(" at")[0];
            var title = item["title"];

            if (date === "Saturday") {date = "Shabbos";}

            if(events.hasOwnProperty(date)) {
                    events[date].push(title);
            }
            else {
                events[date] = [title];
            }
        }

        eventKeys = Object.keys(events).slice(0, 3);

        for (var i in eventKeys) {
            var day = eventKeys[i];
            var dayEvents = events[eventKeys[i]];

            if (dayEvents) {
                dateEl = document.createElement("div");
                dateEl.className = "xsmall light";
                dateEl.innerHTML = day;
                wrapper.appendChild(dateEl);

                for (var e in dayEvents) {
                    eventEl = document.createElement("div");
                    eventEl.className = "small";
                    eventEl.innerHTML = dayEvents[e];
                    eventEl.style["text-indent"] = "1em";
                    wrapper.appendChild(eventEl);
                }
            }
        }

        return wrapper;
    },

    updateTimes: function() {
        var self = this;
        var url = self.makeURL();
        var retry = true;

        var timesRequest = new XMLHttpRequest();
        timesRequest.open("GET", url, true);
        timesRequest.onreadystatechange = function() {
            if (this.readyState === 4) {
                if (this.status === 200) {
                    self.processTimes(JSON.parse(this.response));
                } else {
                    Log.error(self.name + ": Could not load shabbat updateTimes.");
                }

                if (retry) {
                    self.scheduleUpdate((self.loaded) ? -1 : self.config.retryDelay);
                }
            }
        };
        timesRequest.send();
    },

    scheduleUpdate: function(delay) {
        var nextLoad = this.config.updateInterval;
        if (typeof delay !== "undefined" && delay >= 0) {
            nextLoad = delay;
        }

        var self = this
        setTimeout(function() {
            self.updateTimes();
        }, nextLoad);
    },

    makeURL: function() {
        var c = this.config

        var ashkenaz = "on"
        if (!c.ashkenaz) {
            ashkenaz = "off"
        }

        var url = "https://www.hebcal.com/shabbat/?cfg=json&b=" + c.minutesBefore + "&m=" + c.minutesAfter + "&a=" + ashkenaz + "&geo=pos&latitude=" + c.latitude + "&longitude=" + c.longitude + "&tzid=" + c.tzid;
        return url
    },

    processTimes: function(data) {
        if (!data || !data['items']) {
            // Did not receive usable new data.
            return;
        }

        this.items = data['items']
        this.loaded = true;
        this.updateDom(this.config.animationSpeed);
    }
})