const localize = require('./localize').localize;

const systems = {

mac : ['Mac68K', 'MacIntel', 'MacPPC'],

linux: [

'HP-UX',

'Linux i686',

'Linux amd64',

'Linux i686 on x86_64',

'Linux i686 X11',

'Linux x86_64',

'Linux x86_64 X11',

'FreeBSD',

'FreeBSD i386',

'FreeBSD amd64',

'X11',

],

ios: [

'iPhone',

'iPod',

'iPad',

'iPhone Simulator',

'iPod Simulator',

'iPad Simulator',

],

android: [

'Android',

'Linux armv7l', // Samsung galaxy s2 ~ s5, nexus 4/5

'Linux armv8l',

null,

],

windows: [

'Win16',

'Win32',

'Win64',

'WinCE',

],

};

const isDesktop = () => {

const os = OSDetect();

return !!['windows', 'mac', 'linux'].find(system => system === os);

};

const isMobile = () => /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent);

const OSDetect = () => {

// For testing purposes or more compatibility, if we set 'config.os'

// inside our localStorage, we ignore fetching information from

// navigator object and return what we have straight away.

if (localStorage.getItem('config.os')) {

return localStorage.getItem('config.os');

}

if (typeof navigator !== 'undefined' && navigator.platform) {

return Object.keys(systems)

.map(os => {

if (systems[os].some(platform => navigator.platform === platform)) {

return os;

}

return false;

})

.filter(os => os)[0];

}

return localize('Unknown OS');

};

module.exports = {

OSDetect,

isDesktop,

isMobile,

};