nfc-web/web/nfc-theme/static/geo.js

const ua = String(platform.os).toLowerCase();
const android = ua.indexOf("android") > -1;
const ios = ua.indexOf("ios") > -1;
const windows = ua.indexOf("windows") > -1;
const linux = ua.indexOf("linux") > -1;
const mac = ua.indexOf("macos") > -1;
var hashlinks = document.querySelectorAll('[href*="geo:"]');
var hasharray = [...hashlinks];
if ( hasharray.length > 0 ) {
    hasharray.forEach(hashlink => {
        const geolink = hashlink.getAttribute("href").match(/(-?\d+(\.\d+)?),\s*(-?\d+(\.\d+)?)/g);
        var latlon;
        if ( geolink.length > 1 && geolink[0] == '0,0') latlon = geolink[1];
        else latlon = geolink[0];
        if ( windows || mac || linux ) hashlink.href = "https://maps.google.com/?q=" + latlon;
        else if ( android ) hashlink.href = "geo:0,0?q=" + latlon;
        else if ( ios ) hashlink.href = "http://maps.apple.com/?ll=" + latlon + "&q=" + hashlink.innerHTML;
    });
}