window._lmtag = window._lmtag ? window._lmtag : _lmtag = {
    _lm_pixel_url: "https://lovys-1.leadsmonitor.io/pixel.gif",
    _lm_tracked_params: [
        'id', 'ref', 'type', 'location',
        'revenue'
    ],
    _lm_id: undefined,
    _lmBuildParams: function(obj) {
        return this._lm_tracked_params.reduce(function(r, item) {
            if (obj[item] != undefined) {
                return r + ((r == "") ? "?" : "&") + item + "=" + obj[item];
            }
            return r;
        }, "");
    },
    _lmWriteTag: function(src) {
        const _lm_pixel_tag =
        "<img src=\"" + src + "\" width=\"1\" height=\"1\" border=\"0\">";       
        if (document.getElementById('_lm_pix') != null) {
            var _lm_old_pix = document.getElementById('_lm_pix').innerHTML;
            document.getElementById('_lm_pix').innerHTML = _lm_old_pix
            + _lm_pixel_tag;
        } else {
            const i = document.createElement('div');
            i.id = '_lm_pix'
            i.innerHTML = _lm_pixel_tag;
            document.body.appendChild(i);
        }
    },
    _lmCreateLmId: function() {
        const id = Math.floor(Date.now() *
        Math.random()).toString(36).toUpperCase()
+ Math.floor(Date.now() * Math.random()).toString(36).toUpperCase();
        this._lm_id = id;
        const cookieExpirationDate = new Date();
        cookieExpirationDate.setTime(Date.now() + 365*24*60*60*1000);
        const newCookie = '_lm_id=' + id + '; expires='
        + cookieExpirationDate.toGMTString()
        + "; path=/;SameSite=None;Secure";
        document.cookie = newCookie;
        console.log(document.cookie);
    },
    _lmRefreshId: function() {
        if (this._lm_id != undefined) {
            return ;
        } else if (window._lm_id != undefined) {
            this._lm_id = window._lm_id;
        } else if (localStorage != undefined
            && localStorage.getItem('_lm_id') != null) {
            this._lm_id = localStorage.getItem('_lm_id');
        } else if (document.cookie != undefined
            && document.cookie.match(/_lm_id=([^;]+)/) != null) {
            this._lm_id = String(document.cookie.match(/_lm_id=([^;]+)/)[1]);
            localStorage.setItem('_lm_id', this._lm_id);
        } else {
            this._lmCreateLmId();
        }
    },
    registerHit: function(hitType = undefined, parameters = {}) {
        parameters.type = hitType;
        if (hitType == 'visit') {
            hitType = undefined;
        }
        this._lmRefreshId();
        parameters['id'] = this._lm_id;
        if (document.referrer != "") {
            parameters['ref'] = encodeURIComponent(document.referrer);
        }
        if (document.location != "") {
            parameters['location'] = encodeURIComponent(document.location);
        }
        const paramString = this._lmBuildParams(parameters);
        this._lmWriteTag(this._lm_pixel_url + paramString);
    }
};
// polyfill
if (!Date.now) {
    Date.now = function now() {
        return new Date().getTime();
    };
}
// !polyfill