export const isBrowser = typeof navigator !== 'undefined'

export const target: any = isBrowser

? window

: typeof global !== 'undefined'

? global

: {}

export const isChrome = typeof target.chrome !== 'undefined' && !!target.chrome.devtools

export const isFirefox = isBrowser && navigator.userAgent.indexOf('Firefox') > -1

export const isWindows = isBrowser && navigator.platform.indexOf('Win') === 0

export const isMac = isBrowser && navigator.platform === 'MacIntel'

export const isLinux = isBrowser && navigator.platform.indexOf('Linux') === 0

export const keys = {

ctrl: isMac ? '⌘' : 'Ctrl',

shift: 'Shift',

alt: isMac ? '⌥' : 'Alt',

del: 'Del',

enter: 'Enter',

esc: 'Esc',

}

export function initEnv (Vue) {

if (Vue.prototype.hasOwnProperty('$isChrome')) return

Object.defineProperties(Vue.prototype, {

$isChrome: { get: () => isChrome },

$isFirefox: { get: () => isFirefox },

$isWindows: { get: () => isWindows },

$isMac: { get: () => isMac },

$isLinux: { get: () => isLinux },

$keys: { get: () => keys },

})

if (isWindows) document.body.classList.add('platform-windows')

if (isMac) document.body.classList.add('platform-mac')

if (isLinux) document.body.classList.add('platform-linux')

}