import { window } from 'ssr-window';
import Support from './support';

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

  const device = {
    ios: false,
    android: false,
    androidChrome: false,
    desktop: false,
    iphone: 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 android = ua.match(/(Android);?[\s\/]+([\d.]+)?/); // eslint-disable-line
  let 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 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 windows = platform === 'Win32';
  const electron = ua.toLowerCase().indexOf('electron') >= 0;
  let macos = platform === 'MacIntel';

  // iPadOs 13 fix
  if (!ipad
    && macos
    && Support.touch
    && (
      (screenWidth === 1024 && screenHeight === 1366) // Pro 12.9
      || (screenWidth === 834 && screenHeight === 1194) // Pro 11
      || (screenWidth === 834 && screenHeight === 1112) // Pro 10.5
      || (screenWidth === 768 && screenHeight === 1024) // other
    )
  ) {
    ipad = ua.match(/(Version)\/([\d.]+)/);
    macos = false;
  }

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

  // 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;
  }
  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) || electron;
  if (device.desktop) {
    device.electron = electron;
    device.macos = macos;
    device.windows = windows;
    if (device.macos) {
      device.os = 'macos';
    }
    if (device.windows) {
      device.os = 'windows';
    }
  }

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

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

export default Device;