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auth.js
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auth.js
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import getProp from 'dotprop'
import Storage from './storage'
import { routeOption, isRelativeURL, isUnset, isSameURL } from './utilities'
export default class Auth {
constructor (ctx, options) {
this.ctx = ctx
this.options = options
// Strategies
this.strategies = {}
// Error listeners
this._errorListeners = []
// Storage & State
options.initialState = { user: null, loggedIn: false }
const storage = new Storage(ctx, options)
this.$storage = storage
this.$state = storage.state
}
init () {
// Watch for loggedIn changes only in client side
if (process.browser) {
this.$storage.watchState('loggedIn', loggedIn => {
if (!routeOption(this.ctx.route, 'auth', false)) {
this.redirect(loggedIn ? 'home' : 'logout')
}
})
}
// Restore strategy
this.$storage.syncUniversal('strategy', this.options.defaultStrategy)
// Call mounted for active strategy on initial load
return this.mounted()
}
// Backward compatibility
get state () {
if (!this._state_warn_shown) {
this._state_warn_shown = true
// eslint-disable-next-line no-console
console.warn('[AUTH] $auth.state is deprecated. Please use $auth.$state or top level props like $auth.loggedIn')
}
return this.$state
}
getState (key) {
if (!this._get_state_warn_shown) {
this._get_state_warn_shown = true
// eslint-disable-next-line no-console
console.warn('[AUTH] $auth.getState is deprecated. Please use $auth.$storage.getState() or top level props like $auth.loggedIn')
}
return this.$storage.getState(key)
}
// ---------------------------------------------------------------
// Strategy and Scheme
// ---------------------------------------------------------------
get strategy () {
return this.strategies[this.$state.strategy]
}
registerStrategy (name, strategy) {
this.strategies[name] = strategy
}
setStrategy (name) {
if (name === this.$storage.getUniversal('strategy')) {
return Promise.resolve()
}
// Set strategy
this.$storage.setUniversal('strategy', name)
// Call mounted hook on active strategy
return this.mounted()
}
mounted () {
if (!this.strategy.mounted) {
return this.fetchUserOnce()
}
return Promise.resolve(this.strategy.mounted(...arguments)).catch(error => {
this.callOnError(error, { method: 'mounted' })
return Promise.reject(error)
})
}
loginWith (name, ...args) {
return this.setStrategy(name).then(() => this.login(...args))
}
login () {
if (!this.strategy.login) {
return Promise.resolve()
}
return this.wrapLogin(this.strategy.login(...arguments)).catch(error => {
this.callOnError(error, { method: 'login' })
return Promise.reject(error)
})
}
fetchUser () {
if (!this.strategy.fetchUser) {
return Promise.resolve()
}
return Promise.resolve(this.strategy.fetchUser(...arguments)).catch(error => {
this.callOnError(error, { method: 'fetchUser' })
return Promise.reject(error)
})
}
logout () {
if (!this.strategy.logout) {
this.reset()
return Promise.resolve()
}
return Promise.resolve(this.strategy.logout(...arguments)).catch(error => {
this.callOnError(error, { method: 'logout' })
return Promise.reject(error)
})
}
reset () {
if (!this.strategy.reset) {
this.setUser(null)
this.setToken(this.$state.strategy, null)
return Promise.resolve()
}
return Promise.resolve(this.strategy.reset(...arguments)).catch(error => {
this.callOnError(error, { method: 'reset' })
return Promise.reject(error)
})
}
// ---------------------------------------------------------------
// Token helpers
// ---------------------------------------------------------------
getToken (strategy) {
const _key = this.options.token.prefix + strategy
return this.$storage.getUniversal(_key)
}
setToken (strategy, token) {
const _key = this.options.token.prefix + strategy
return this.$storage.setUniversal(_key, token)
}
syncToken (strategy) {
const _key = this.options.token.prefix + strategy
return this.$storage.syncUniversal(_key)
}
// ---------------------------------------------------------------
// User helpers
// ---------------------------------------------------------------
get user () {
return this.$state.user
}
get loggedIn () {
return this.$state.loggedIn
}
fetchUserOnce () {
if (!this.$state.user) {
return this.fetchUser(...arguments)
}
return Promise.resolve()
}
setUser (user) {
this.$storage.setState('loggedIn', Boolean(user))
this.$storage.setState('user', user)
}
// ---------------------------------------------------------------
// Utils
// ---------------------------------------------------------------
get busy () {
return this.$storage.getState('busy')
}
request (endpoint, defaults) {
const _endpoint =
typeof defaults === 'object'
? Object.assign({}, defaults, endpoint)
: endpoint
return this.ctx.app.$axios
.request(_endpoint)
.then(response => {
if (_endpoint.propertyName) {
return getProp(response.data, _endpoint.propertyName)
} else {
return response.data
}
})
.catch(error => {
// Call all error handlers
this.callOnError(error, { method: 'request' })
// Throw error
return Promise.reject(error)
})
}
requestWith (strategy, endpoint, defaults) {
const token = this.getToken(strategy)
if (isUnset(token)) {
return Promise.reject(new Error('No Token'))
}
const _endpoint = Object.assign({}, defaults, endpoint)
if (!_endpoint.headers) {
_endpoint.headers = {}
}
if (!_endpoint.headers['Authorization']) {
_endpoint.headers['Authorization'] = token
}
return this.request(_endpoint)
}
wrapLogin (promise) {
this.$storage.setState('busy', true)
this.error = null
return Promise.resolve(promise)
.then(() => {
this.$storage.setState('busy', false)
})
.catch(error => {
this.$storage.setState('busy', false)
return Promise.reject(error)
})
}
onError (listener) {
this._errorListeners.push(listener)
}
callOnError (error, payload = {}) {
this.error = error
for (let fn of this._errorListeners) {
fn(error, payload)
}
}
redirect (name, noRouter = false) {
if (!this.options.redirect) {
return
}
const from = this.options.fullPathRedirect ? this.ctx.route.path : this.ctx.route.fullPath
let to = this.options.redirect[name]
if (!to) {
return
}
// Apply rewrites
if (this.options.rewriteRedirects) {
if (name === 'login' && isRelativeURL(from) && !isSameURL(to, from)) {
this.$storage.setUniversal('redirect', from)
}
if (name === 'home') {
const redirect = this.$storage.getUniversal('redirect')
this.$storage.setUniversal('redirect', null)
if (isRelativeURL(redirect)) {
to = redirect
}
}
}
// Prevent infinity redirects
if (isSameURL(to, from)) {
return
}
if (process.browser) {
if (noRouter) {
window.location.replace(to)
} else {
this.ctx.redirect(to)
}
} else {
this.ctx.redirect(to)
}
}
hasScope (scope) {
const userScopes = this.$state.user && getProp(this.$state.user, this.options.scopeKey)
if (!userScopes) {
return undefined
}
if (Array.isArray(userScopes)) {
return userScopes.includes(scope)
}
return Boolean(getProp(userScopes, scope))
}
}