Issue with my IFTTT applet

[alessandrodatri]

Hello!

I like to use your filter for one of my applets in IFTTT, I'll explain the need below.

I currently have an applet that executes a scene in Smart Life, turning on some devices, at the voice command dictated to Alexa.
Among these devices there are lights, which I would like them to turn on only if there is no sunlight, therefore between sunset and sunrise.

The IFTTT applet is properly configured and working fine.
The filter indicated at the moment has a fixed condition on the time, as follows:

var currentHour = Meta.currentUserTime.hour ()

if (currentHour> = 18 && currentHour <= 5) {
Smartlife.activateScene.Skip ()
}

This works correctly.

I thought of integrating your filter in order to dynamically base myself on the sunset / sunrise time.
So I changed your filter as follows:

// Collegno, Turin (IT)
var myLatitude = 45.1;
var myLongitude = 7.6;

..... same code

if (triggerDate.getTime> todaySunlight.sunrise && triggerDate.getTime <todaySunlight.sunset) {
Smartlife.activateScene.Skip ()
}

but it does not work.

Any suggestions?

Thank you

[dxdc]

@alessandrodatri

Please confirm, this is the code you're trying? And, the code will only run at night (not during the daytime). You can try editing this line:

if (triggerDate.getTime> todaySunlight.sunrise && triggerDate.getTime <todaySunlight.sunset) {

For testing purposes.

// Collegno, Turin (IT)
var myLatitude = 45.1;
var myLongitude = 7.6;

// var triggerDate = Meta.triggerTime.toDate();
var triggerDate = Meta.currentUserTime.toDate();

// TypeScript port of https://github.com/mourner/suncalc

var PI   = Math.PI,
    sin  = Math.sin,
    cos  = Math.cos,
    tan  = Math.tan,
    asin = Math.asin,
    atan = Math.atan2,
    acos = Math.acos,
    rad  = PI / 180;

// sun calculations are based on http://aa.quae.nl/en/reken/zonpositie.html formulas

// date/time constants and conversions

var dayMs = 1000 * 60 * 60 * 24,
    J1970 = 2440588,
    J2000 = 2451545;

function toJulian(date: Date) { return date.valueOf() / dayMs - 0.5 + J1970; }
function fromJulian(j: number)  { return new Date((j + 0.5 - J1970) * dayMs); }
function toDays(date: Date)   { return toJulian(date) - J2000; }


// general calculations for position

var e = rad * 23.4397; // obliquity of the Earth

function rightAscension(l: number, b: number): number { return atan(sin(l) * cos(e) - tan(b) * sin(e), cos(l)); }
function declination(l: number, b: number): number { return asin(sin(b) * cos(e) + cos(b) * sin(e) * sin(l)); }

function azimuth(H: number, phi: number, dec: number): number { return atan(sin(H), cos(H) * sin(phi) - tan(dec) * cos(phi)); }
function altitude(H: number, phi: number, dec: number): number { return asin(sin(phi) * sin(dec) + cos(phi) * cos(dec) * cos(H)); }

function siderealTime(d: number, lw: number): number { return rad * (280.16 + 360.9856235 * d) - lw; }

function astroRefraction(h: number): number {
    if (h < 0) // the following formula works for positive altitudes only.
        h = 0; // if h = -0.08901179 a div/0 would occur.

    // formula 16.4 of "Astronomical Algorithms" 2nd edition by Jean Meeus (Willmann-Bell, Richmond) 1998.
    // 1.02 / tan(h + 10.26 / (h + 5.10)) h in degrees, result in arc minutes -> converted to rad:
    return 0.0002967 / Math.tan(h + 0.00312536 / (h + 0.08901179));
}

// general sun calculations

function solarMeanAnomaly(d: number): number { return rad * (357.5291 + 0.98560028 * d); }

function eclipticLongitude(M: number): number {

    var C = rad * (1.9148 * sin(M) + 0.02 * sin(2 * M) + 0.0003 * sin(3 * M)), // equation of center
        P = rad * 102.9372; // perihelion of the Earth

    return M + C + P + PI;
}

function sunCoords(d: number): {} {

    var M = solarMeanAnomaly(d),
        L = eclipticLongitude(M);

    return {
        dec: declination(L, 0),
        ra: rightAscension(L, 0)
    };
}


var SunCalc = <any>{};
// calculates sun position for a given date and latitude/longitude

SunCalc.getPosition = function (date: Date, lat: number, lng: number): {} {

    var lw  = rad * -lng,
        phi = rad * lat,
        d   = toDays(date),

        c  = <any>sunCoords(d),
        H  = siderealTime(d, lw) - c.ra;

    return {
        azimuth: azimuth(H, phi, c.dec),
        altitude: altitude(H, phi, c.dec)
    };
};


// sun times configuration (angle, morning name, evening name)

var times = SunCalc.times = [
    [-0.833, 'sunrise',       'sunset'      ],
    [  -0.3, 'sunriseEnd',    'sunsetStart' ],
    [    -6, 'dawn',          'dusk'        ],
    [   -12, 'nauticalDawn',  'nauticalDusk'],
    [   -18, 'nightEnd',      'night'       ],
    [     6, 'goldenHourEnd', 'goldenHour'  ]
];

// adds a custom time to the times config

SunCalc.addTime = function (angle: number, riseName: number, setName: number): void {
    times.push([angle, riseName, setName]);
};


// calculations for sun times

var J0 = 0.0009;

function julianCycle(d: number, lw: number): number { return Math.round(d - J0 - lw / (2 * PI)); }

function approxTransit(Ht: number, lw: number, n: number): number { return J0 + (Ht + lw) / (2 * PI) + n; }
function solarTransitJ(ds: number, M: number, L: number): number  { return J2000 + ds + 0.0053 * sin(M) - 0.0069 * sin(2 * L); }

function hourAngle(h: number, phi: number, d: number): number { return acos((sin(h) - sin(phi) * sin(d)) / (cos(phi) * cos(d))); }

// returns set time for the given sun altitude
function getSetJ(h: number, lw: number, phi: number, dec: number, n: number, M: number, L: number): number {

    var w = hourAngle(h, phi, dec),
        a = approxTransit(w, lw, n);
    return solarTransitJ(a, M, L);
}


// calculates sun times for a given date and latitude/longitude

SunCalc.getTimes = function (date: Date, lat: number, lng: number): any {

    var lw = rad * -lng,
        phi = rad * lat,

        d = toDays(date),
        n = julianCycle(d, lw),
        ds = approxTransit(0, lw, n),

        M = solarMeanAnomaly(ds),
        L = eclipticLongitude(M),
        dec = declination(L, 0),

        Jnoon = solarTransitJ(ds, M, L),

        i, len, time, Jset, Jrise;


    var result = <any>{
        solarNoon: fromJulian(Jnoon),
        nadir: fromJulian(Jnoon - 0.5)
    };

    for (i = 0, len = times.length; i < len; i += 1) {
        time = times[i];

        Jset = getSetJ(<number>time[0] * rad, lw, phi, dec, n, M, L);
        Jrise = Jnoon - (Jset - Jnoon);

        result[time[1]] = fromJulian(Jrise);
        result[time[2]] = fromJulian(Jset);
    }

    return result;
};


// moon calculations, based on http://aa.quae.nl/en/reken/hemelpositie.html formulas

function moonCoords(d: number): {} { // geocentric ecliptic coordinates of the moon

    var L = rad * (218.316 + 13.176396 * d), // ecliptic longitude
        M = rad * (134.963 + 13.064993 * d), // mean anomaly
        F = rad * (93.272 + 13.229350 * d),  // mean distance

        l  = L + rad * 6.289 * sin(M), // longitude
        b  = rad * 5.128 * sin(F),     // latitude
        dt = 385001 - 20905 * cos(M);  // distance to the moon in km

    return {
        ra: rightAscension(l, b),
        dec: declination(l, b),
        dist: dt
    };
}

SunCalc.getMoonPosition = function (date: Date, lat: number, lng: number): {} {

    var lw  = rad * -lng,
        phi = rad * lat,
        d   = toDays(date),

        c = <any>moonCoords(d),
        H = siderealTime(d, lw) - c.ra,
        h = altitude(H, phi, c.dec),
        // formula 14.1 of "Astronomical Algorithms" 2nd edition by Jean Meeus (Willmann-Bell, Richmond) 1998.
        pa = atan(sin(H), tan(phi) * cos(c.dec) - sin(c.dec) * cos(H));

    h = h + astroRefraction(h); // altitude correction for refraction

    return {
        azimuth: azimuth(H, phi, c.dec),
        altitude: h,
        distance: c.dist,
        parallacticAngle: pa
    };
};


// calculations for illumination parameters of the moon,
// based on http://idlastro.gsfc.nasa.gov/ftp/pro/astro/mphase.pro formulas and
// Chapter 48 of "Astronomical Algorithms" 2nd edition by Jean Meeus (Willmann-Bell, Richmond) 1998.

SunCalc.getMoonIllumination = function (date: Date): {} {

    var d = toDays(date || new Date()),
        s = <any>sunCoords(d),
        m = <any>moonCoords(d),

        sdist = 149598000, // distance from Earth to Sun in km

        phi = acos(sin(s.dec) * sin(m.dec) + cos(s.dec) * cos(m.dec) * cos(s.ra - m.ra)),
        inc = atan(sdist * sin(phi), m.dist - sdist * cos(phi)),
        angle = atan(cos(s.dec) * sin(s.ra - m.ra), sin(s.dec) * cos(m.dec) -
                cos(s.dec) * sin(m.dec) * cos(s.ra - m.ra));

    return {
        fraction: (1 + cos(inc)) / 2,
        phase: 0.5 + 0.5 * inc * (angle < 0 ? -1 : 1) / Math.PI,
        angle: angle
    };
};

function hoursLater(date: Date, h: number): Date {
    return new Date(date.valueOf() + h * dayMs / 24);
}

// calculations for moon rise/set times are based on http://www.stargazing.net/kepler/moonrise.html article

SunCalc.getMoonTimes = function (date: string, lat: number, lng: number, inUTC: boolean): {} {
    var t = new Date(date);
    if (inUTC) t.setUTCHours(0, 0, 0, 0);
    else t.setHours(0, 0, 0, 0);

    var hc = 0.133 * rad,
        h0 = SunCalc.getMoonPosition(t, lat, lng).altitude - hc,
        h1, h2, rise, set, a, b, xe, ye, d, roots, x1, x2, dx;

    // go in 2-hour chunks, each time seeing if a 3-point quadratic curve crosses zero (which means rise or set)
    for (var i = 1; i <= 24; i += 2) {
        h1 = SunCalc.getMoonPosition(hoursLater(t, i), lat, lng).altitude - hc;
        h2 = SunCalc.getMoonPosition(hoursLater(t, i + 1), lat, lng).altitude - hc;

        a = (h0 + h2) / 2 - h1;
        b = (h2 - h0) / 2;
        xe = -b / (2 * a);
        ye = (a * xe + b) * xe + h1;
        d = b * b - 4 * a * h1;
        roots = 0;

        if (d >= 0) {
            dx = Math.sqrt(d) / (Math.abs(a) * 2);
            x1 = xe - dx;
            x2 = xe + dx;
            if (Math.abs(x1) <= 1) roots++;
            if (Math.abs(x2) <= 1) roots++;
            if (x1 < -1) x1 = x2;
        }

        if (roots === 1) {
            if (h0 < 0) rise = i + x1;
            else set = i + x1;

        } else if (roots === 2) {
            rise = i + (ye < 0 ? x2 : x1);
            set = i + (ye < 0 ? x1 : x2);
        }

        if (rise && set) break;

        h0 = h2;
    }

    var result = <any>{};

    if (rise) result.rise = hoursLater(t, rise);
    if (set) result.set = hoursLater(t, set);

    if (!rise && !set) result[ye > 0 ? 'alwaysUp' : 'alwaysDown'] = true;

    return result;
}

var todaySunlight = <any>SunCalc.getTimes(triggerDate, myLatitude, myLongitude);

// Customize with getTimes properties, sunrise, dusk, etc.

// you can try here, instead:
// if (triggerDate.getTime < todaySunlight.sunrise && triggerDate.getTime > todaySunlight.sunset) {
// for testing during daylight hours

if (triggerDate.getTime > todaySunlight.sunrise && triggerDate.getTime < todaySunlight.sunset) {
    Smartlife.activateScene.Skip();
}

[alessandrodatri]

Yes man, that is the right code i used.

But it doesn't work :(

[dxdc]

But it doesn't work :(

What errors do you see? Is it not running at the right times? If you reverse the logic

(e.g.)

if (triggerDate.getTime < todaySunlight.sunrise && triggerDate.getTime > todaySunlight.sunset) {

Does it run?