import { window, document } from 'ssr-window';

const Device = (function Device() {
  const platform = window.navigator.platform;
  const ua = window.navigator.userAgent;

  const device = {
    ios: false,
    android: false,
    androidChrome: false,
    desktop: false,
    windowsPhone: false,
    iphone: false,
    iphoneX: false,
    ipod: false,
    ipad: false,
    edge: false,
    ie: false,
    firefox: false,
    macos: false,
    windows: false,
    cordova: !!(window.cordova || window.phonegap),
    phonegap: !!(window.cordova || window.phonegap),
    electron: false,
  };

  const screenWidth = window.screen.width;
  const screenHeight = window.screen.height;

  const windowsPhone = ua.match(/(Windows Phone);?[\s\/]+([\d.]+)?/); // eslint-disable-line
  const android = ua.match(/(Android);?[\s\/]+([\d.]+)?/); // eslint-disable-line
  const ipad = ua.match(/(iPad).*OS\s([\d_]+)/);
  const ipod = ua.match(/(iPod)(.*OS\s([\d_]+))?/);
  const iphone = !ipad && ua.match(/(iPhone\sOS|iOS)\s([\d_]+)/);
  const iphoneX = iphone && (
    (screenWidth === 375 && screenHeight === 812) // X/XS
    || (screenWidth === 414 && screenHeight === 896) // XR / XS Max
  );
  const ie = ua.indexOf('MSIE ') >= 0 || ua.indexOf('Trident/') >= 0;
  const edge = ua.indexOf('Edge/') >= 0;
  const firefox = ua.indexOf('Gecko/') >= 0 && ua.indexOf('Firefox/') >= 0;
  const macos = platform === 'MacIntel';
  const windows = platform === 'Win32';
  const electron = ua.toLowerCase().indexOf('electron') >= 0;

  device.ie = ie;
  device.edge = edge;
  device.firefox = firefox;

  // Windows
  if (windowsPhone) {
    device.os = 'windowsPhone';
    device.osVersion = windowsPhone[2];
    device.windowsPhone = true;
  }
  // Android
  if (android && !windows) {
    device.os = 'android';
    device.osVersion = android[2];
    device.android = true;
    device.androidChrome = ua.toLowerCase().indexOf('chrome') >= 0;
  }
  if (ipad || iphone || ipod) {
    device.os = 'ios';
    device.ios = true;
  }
  // iOS
  if (iphone && !ipod) {
    device.osVersion = iphone[2].replace(/_/g, '.');
    device.iphone = true;
    device.iphoneX = iphoneX;
  }
  if (ipad) {
    device.osVersion = ipad[2].replace(/_/g, '.');
    device.ipad = true;
  }
  if (ipod) {
    device.osVersion = ipod[3] ? ipod[3].replace(/_/g, '.') : null;
    device.ipod = true;
  }
  // iOS 8+ changed UA
  if (device.ios && device.osVersion && ua.indexOf('Version/') >= 0) {
    if (device.osVersion.split('.')[0] === '10') {
      device.osVersion = ua.toLowerCase().split('version/')[1].split(' ')[0];
    }
  }

  // Webview
  device.webView = !!((iphone || ipad || ipod) && (ua.match(/.*AppleWebKit(?!.*Safari)/i) || window.navigator.standalone))
    || (window.matchMedia && window.matchMedia('(display-mode: standalone)').matches);
  device.webview = device.webView;
  device.standalone = device.webView;

  // Desktop
  device.desktop = !(device.ios || device.android || device.windowsPhone) || electron;
  if (device.desktop) {
    device.electron = electron;
    device.macos = macos;
    device.windows = windows;
  }

  // Meta statusbar
  const metaStatusbar = document.querySelector('meta[name="apple-mobile-web-app-status-bar-style"]');

  // Check for status bar and fullscreen app mode
  device.needsStatusbarOverlay = function needsStatusbarOverlay() {
    if (device.desktop) return false;
    if (device.standalone && device.ios && metaStatusbar && metaStatusbar.content === 'black-translucent') {
      return true;
    }
    if ((device.webView || (device.android && device.cordova)) && (window.innerWidth * window.innerHeight === window.screen.width * window.screen.height)) {
      if (device.iphoneX && (window.orientation === 90 || window.orientation === -90)) {
        return false;
      }
      return true;
    }
    return false;
  };
  device.statusbar = device.needsStatusbarOverlay();

  // Pixel Ratio
  device.pixelRatio = window.devicePixelRatio || 1;

  // Color Scheme
  const DARK = '(prefers-color-scheme: dark)';
  const LIGHT = '(prefers-color-scheme: light)';
  device.prefersColorScheme = function prefersColorTheme() {
    let theme;
    if (window.matchMedia && window.matchMedia(LIGHT).matches) {
      theme = 'light';
    }
    if (window.matchMedia && window.matchMedia(DARK).matches) {
      theme = 'dark';
    }
    return theme;
  };

  // Export object
  return device;
}());

export default Device;
