class TrackingConsensus {

static init() {

const settings = this._readStorage();

if (typeof settings.allowsBrowserData === 'undefined') {

// Not yet set, ask user

document.getElementById('tracking-consensus').classList.remove('display-none');

} else {

if (this.allowsTracking(settings)) this._appendScript();

}

}

static allowsBrowserData() {

return this._readStorage().allowsBrowserData;

}

static allowsUsageData() {

return this._readStorage().allowsUsageData;

}

static allowsTracking(settings) {

console.debug("Tracking settings:", settings);

return settings.allowsBrowserData || settings.allowsUsageData;

}

/**

* @params {{allowsBrowserData?: boolean, allowsUsageData?: boolean}} obj

*/

static update(obj) {

document.getElementById('tracking-consensus').classList.add('display-none');

const settings = Object.assign(this._readStorage(), obj);

localStorage.setItem(TrackingConsensus.STORAGE_KEY, JSON.stringify(settings));

// If at least one of the settings is true, start the tracking script

if (this.allowsTracking(settings)) this._appendScript();

}

static initPaq() {

window._paq = [];

_paq.push(['trackPageView']);

_paq.push(['enableLinkTracking']);

}

static _readStorage() {

const storage = localStorage.getItem(TrackingConsensus.STORAGE_KEY);

if (!storage) return {}

return JSON.parse(storage);

}

static _appendScript() {

if (this._appendedScript) return;

console.debug('Appending Tracking Script');

/* tracker methods like "setCustomDimension" should be called before "trackPageView" */

(function () {

var u = "//stats.nimiq-network.com/";

_paq.push(['setTrackerUrl', u + 'nimiq.php']);

_paq.push(['setSiteId', '3']);

var d = document, g = d.createElement('script'), s = d.getElementsByTagName('script')[0];

g.type = 'text/javascript'; g.async = true; g.defer = true; g.src = u + 'nimiq.js'; s.parentNode.insertBefore(g, s);

})();

this._appendedScript = true;

}

}

TrackingConsensus._appendedScript = false;

TrackingConsensus.STORAGE_KEY = 'tracking-consensus';

export default TrackingConsensus;