elk/composables/users.ts

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import { login as loginMasto } from 'masto'
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import type { WsEvents, mastodon } from 'masto'
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import type { Ref } from 'vue'
import type { MaybeComputedRef, RemovableRef } from '@vueuse/core'
import type { ElkMasto, UserLogin } from '~/types'
import {
DEFAULT_POST_CHARS_LIMIT,
STORAGE_KEY_CURRENT_USER,
STORAGE_KEY_NOTIFICATION,
STORAGE_KEY_NOTIFICATION_POLICY,
STORAGE_KEY_SERVERS,
STORAGE_KEY_USERS,
} from '~/constants'
import type { PushNotificationPolicy, PushNotificationRequest } from '~/composables/push-notifications/types'
import { useAsyncIDBKeyval } from '~/composables/idb'
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const mock = process.mock
const initializeUsers = async (): Promise<Ref<UserLogin[]> | RemovableRef<UserLogin[]>> => {
let defaultUsers = mock ? [mock.user] : []
// Backward compatibility with localStorage
let removeUsersOnLocalStorage = false
if (globalThis?.localStorage) {
const usersOnLocalStorageString = globalThis.localStorage.getItem(STORAGE_KEY_USERS)
if (usersOnLocalStorageString) {
defaultUsers = JSON.parse(usersOnLocalStorageString)
removeUsersOnLocalStorage = true
}
}
const users = process.server
? ref<UserLogin[]>(defaultUsers)
: await useAsyncIDBKeyval<UserLogin[]>(STORAGE_KEY_USERS, defaultUsers, { deep: true })
if (removeUsersOnLocalStorage)
globalThis.localStorage.removeItem(STORAGE_KEY_USERS)
return users
}
const users = await initializeUsers()
const instances = useLocalStorage<Record<string, mastodon.v1.Instance>>(STORAGE_KEY_SERVERS, mock ? mock.server : {}, { deep: true })
const currentUserId = useLocalStorage<string>(STORAGE_KEY_CURRENT_USER, mock ? mock.user.account.id : '')
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export const currentUser = computed<UserLogin | undefined>(() => {
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if (currentUserId.value) {
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const user = users.value.find(user => user.account?.id === currentUserId.value)
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if (user)
return user
}
// Fallback to the first account
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return users.value[0]
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})
const publicInstance = ref<mastodon.v1.Instance | null>(null)
export const currentInstance = computed<null | mastodon.v1.Instance>(() => currentUser.value ? instances.value[currentUser.value.server] ?? null : publicInstance.value)
export const isGlitchEdition = computed(() => currentInstance.value?.version.includes('+glitch'))
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export const publicServer = ref('')
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export const currentServer = computed<string>(() => currentUser.value?.server || publicServer.value)
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// when multiple tabs: we need to reload window when sign in, switch account or sign out
if (process.client) {
const windowReload = () => {
document.visibilityState === 'visible' && window.location.reload()
}
watch(currentUserId, async (id, oldId) => {
// when sign in or switch account
if (id) {
if (id === currentUser.value?.account?.id) {
// when sign in, the other tab will not have the user, idb is not reactive
const newUser = users.value.find(user => user.account?.id === id)
// if the user is there, then we are switching account
if (newUser) {
// check if the change is on current tab: if so, don't reload
if (document.hasFocus() || document.visibilityState === 'visible')
return
}
}
window.addEventListener('visibilitychange', windowReload, { capture: true })
}
// when sign out
else if (oldId) {
const oldUser = users.value.find(user => user.account?.id === oldId)
// when sign out, the other tab will not have the user, idb is not reactive
if (oldUser)
window.addEventListener('visibilitychange', windowReload, { capture: true })
}
}, { immediate: true, flush: 'post' })
}
export const currentUserHandle = computed(() => currentUser.value?.account.id
? `${currentUser.value.account.acct}@${currentInstance.value?.uri || currentServer.value}`
: '[anonymous]',
)
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export const useUsers = () => users
export const useSelfAccount = (user: MaybeComputedRef<mastodon.v1.Account | undefined>) =>
computed(() => currentUser.value && resolveUnref(user)?.id === currentUser.value.account.id)
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export const characterLimit = computed(() => currentInstance.value?.configuration.statuses.maxCharacters ?? DEFAULT_POST_CHARS_LIMIT)
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async function loginTo(user?: Omit<UserLogin, 'account'> & { account?: mastodon.v1.AccountCredentials }) {
const route = useRoute()
const router = useRouter()
const server = user?.server || route.params.server as string || publicServer.value
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const masto = await loginMasto({
url: `https://${server}`,
accessToken: user?.token,
disableVersionCheck: true,
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})
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if (!user?.token) {
publicServer.value = server
publicInstance.value = await masto.v1.instances.fetch()
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}
else {
try {
const [me, instance, pushSubscription] = await Promise.all([
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masto.v1.accounts.verifyCredentials(),
masto.v1.instances.fetch(),
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// if PWA is not enabled, don't get push subscription
useRuntimeConfig().public.pwaEnabled
// we get 404 response instead empty data
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? masto.v1.webPushSubscriptions.fetch().catch(() => Promise.resolve(undefined))
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: Promise.resolve(undefined),
])
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if (!me.acct.includes('@'))
me.acct = `${me.acct}@${instance.uri}`
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user.account = me
user.pushSubscription = pushSubscription
currentUserId.value = me.id
instances.value[server] = instance
if (!users.value.some(u => u.server === user.server && u.token === user.token))
users.value.push(user as UserLogin)
}
catch {
await signout()
}
}
// This only cleans up the URL; page content should stay the same
if (route.path === '/signin/callback') {
await router.push('/home')
}
else if ('server' in route.params && user?.token && !useNuxtApp()._processingMiddleware) {
await router.push({
...route,
force: true,
})
}
return masto
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}
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export function setAccountInfo(userId: string, account: mastodon.v1.AccountCredentials) {
const index = getUsersIndexByUserId(userId)
if (index === -1)
return false
users.value[index].account = account
return true
}
export async function pullMyAccountInfo() {
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const account = await useMasto().v1.accounts.verifyCredentials()
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if (!account.acct.includes('@'))
account.acct = `${account.acct}@${currentInstance.value!.uri}`
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setAccountInfo(currentUserId.value, account)
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cacheAccount(account, currentServer.value, true)
}
export function getUsersIndexByUserId(userId: string) {
return users.value.findIndex(u => u.account?.id === userId)
}
export async function removePushNotificationData(user: UserLogin, fromSWPushManager = true) {
// clear push subscription
user.pushSubscription = undefined
const { acct } = user.account
// clear request notification permission
delete useLocalStorage<PushNotificationRequest>(STORAGE_KEY_NOTIFICATION, {}).value[acct]
// clear push notification policy
delete useLocalStorage<PushNotificationPolicy>(STORAGE_KEY_NOTIFICATION_POLICY, {}).value[acct]
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const pwaEnabled = useRuntimeConfig().public.pwaEnabled
const pwa = useNuxtApp().$pwa
const registrationError = pwa?.registrationError === true
const unregister = pwaEnabled && !registrationError && pwa?.registrationError === true && fromSWPushManager
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// we remove the sw push manager if required and there are no more accounts with subscriptions
if (unregister && (users.value.length === 0 || users.value.every(u => !u.pushSubscription))) {
// clear sw push subscription
try {
const registration = await navigator.serviceWorker.ready
const subscription = await registration.pushManager.getSubscription()
if (subscription)
await subscription.unsubscribe()
}
catch {
// juts ignore
}
}
}
export async function removePushNotifications(user: UserLogin) {
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if (!user.pushSubscription)
return
// unsubscribe push notifications
try {
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await useMasto().v1.webPushSubscriptions.remove()
}
catch {
// ignore
}
}
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export async function signout() {
// TODO: confirm
if (!currentUser.value)
return
const masto = useMasto()
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const _currentUserId = currentUser.value.account.id
const index = users.value.findIndex(u => u.account?.id === _currentUserId)
if (index !== -1) {
// Clear stale data
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clearUserLocalStorage()
if (!users.value.some((u, i) => u.server === currentUser.value!.server && i !== index))
delete instances.value[currentUser.value.server]
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await removePushNotifications(currentUser.value)
await removePushNotificationData(currentUser.value)
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currentUserId.value = ''
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// Remove the current user from the users
users.value.splice(index, 1)
}
// Set currentUserId to next user if available
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currentUserId.value = users.value[0]?.account?.id
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if (!currentUserId.value)
await useRouter().push('/')
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await masto.loginTo(currentUser.value)
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}
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const notifications = reactive<Record<string, undefined | [Promise<WsEvents>, string[]]>>({})
export const useNotifications = () => {
const id = currentUser.value?.account.id
const masto = useMasto()
async function clearNotifications() {
if (!id || !notifications[id])
return
const lastReadId = notifications[id]![1][0]
notifications[id]![1] = []
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await masto.v1.markers.create({
notifications: { lastReadId },
})
}
async function connect(): Promise<void> {
if (!isMastoInitialised.value || !id || notifications[id] || !currentUser.value?.token)
return
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const stream = masto.v1.stream.streamUser()
notifications[id] = [stream, []]
stream.then(s => s.on('notification', (n) => {
if (notifications[id])
notifications[id]![1].unshift(n.id)
}))
const position = await masto.v1.markers.fetch({ timeline: ['notifications'] })
const paginator = masto.v1.notifications.list({ limit: 30 })
do {
const result = await paginator.next()
if (result.value?.length) {
for (const notification of result.value as mastodon.v1.Notification[]) {
if (notification.id === position.notifications.lastReadId)
return
notifications[id]![1].push(notification.id)
}
}
else {
break
}
} while (true)
}
function disconnect(): void {
if (!id || !notifications[id])
return
notifications[id]![0].then(stream => stream.disconnect())
notifications[id] = undefined
}
watch(currentUser, disconnect)
if (isMastoInitialised.value)
connect()
else
watchOnce(isMastoInitialised, connect)
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return {
notifications: computed(() => id ? notifications[id]?.[1].length ?? 0 : 0),
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disconnect,
clearNotifications,
}
}
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export function checkLogin() {
if (!currentUser.value) {
openSigninDialog()
return false
}
return true
}
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/**
* Create reactive storage for the current user
*/
export function useUserLocalStorage<T extends object>(key: string, initial: () => T) {
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// @ts-expect-error bind value to the function
const storages = useUserLocalStorage._ = useUserLocalStorage._ || new Map<string, Ref<Record<string, any>>>()
if (!storages.has(key))
storages.set(key, useLocalStorage(key, {}, { deep: true }))
const all = storages.get(key) as Ref<Record<string, T>>
return computed(() => {
const id = currentUser.value?.account.id
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? currentUser.value.account.acct
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: '[anonymous]'
all.value[id] = Object.assign(initial(), all.value[id] || {})
return all.value[id]
})
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}
/**
* Clear all storages for the given account
*/
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export function clearUserLocalStorage(account?: mastodon.v1.Account) {
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if (!account)
account = currentUser.value?.account
if (!account)
return
const id = `${account.acct}@${currentInstance.value?.uri || currentServer.value}`
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// @ts-expect-error bind value to the function
;(useUserLocalStorage._ as Map<string, Ref<Record<string, any>>>).forEach((storage) => {
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if (storage.value[id])
delete storage.value[id]
})
}
export const createMasto = () => {
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const api = shallowRef<mastodon.Client | null>(null)
const apiPromise = ref<Promise<mastodon.Client> | null>(null)
const initialised = computed(() => !!api.value)
const masto = new Proxy({} as ElkMasto, {
get(_, key: keyof ElkMasto) {
if (key === 'loggedIn')
return initialised
if (key === 'loginTo') {
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return (...args: any[]): Promise<mastodon.Client> => {
return apiPromise.value = loginTo(...args).then((r) => {
api.value = r
return masto
}).catch(() => {
// Show error page when Mastodon server is down
throw createError({
fatal: true,
statusMessage: 'Could not log into account.',
})
})
}
}
if (api.value && key in api.value)
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return api.value[key as keyof mastodon.Client]
if (!api.value) {
return new Proxy({}, {
get(_, subkey) {
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if (typeof subkey === 'string' && subkey.startsWith('iterate')) {
return (...args: any[]) => {
let paginator: any
function next() {
paginator = paginator || (api.value as any)?.[key][subkey](...args)
return paginator.next()
}
return { next }
}
}
return (...args: any[]) => apiPromise.value?.then((r: any) => r[key][subkey](...args))
},
})
}
return undefined
},
})
return masto
}