elk/composables/users.ts

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import { login as loginMasto } from 'masto'
import type { Account, AccountCredentials, Instance, MastoClient, WsEvents } from 'masto'
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import type { Ref } from 'vue'
import type { ElkMasto, UserLogin } from '~/types'
import {
DEFAULT_POST_CHARS_LIMIT,
DEFAULT_SERVER,
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'
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const mock = process.mock
const users = useLocalStorage<UserLogin[]>(STORAGE_KEY_USERS, mock ? [mock.user] : [], { deep: true })
const instances = useLocalStorage<Record<string, 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<Instance | null>(null)
export const currentInstance = computed<null | Instance>(() => currentUser.value ? instances.value[currentUser.value.server] ?? null : publicInstance.value)
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export const publicServer = ref(DEFAULT_SERVER)
export const currentServer = computed<string>(() => currentUser.value?.server || publicServer.value)
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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
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export const characterLimit = computed(() => currentInstance.value?.configuration.statuses.maxCharacters ?? DEFAULT_POST_CHARS_LIMIT)
async function loginTo(user?: Omit<UserLogin, 'account'> & { account?: 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://${server}`,
accessToken: user?.token,
disableVersionCheck: true,
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// Suppress warning of `masto/fetch` usage
disableExperimentalWarning: true,
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})
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if (!user?.token) {
publicServer.value = server
publicInstance.value = await masto.instances.fetch()
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}
else {
try {
const [me, instance, pushSubscription] = await Promise.all([
masto.accounts.verifyCredentials(),
masto.instances.fetch(),
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// if PWA is not enabled, don't get push subscription
useRuntimeConfig().public.pwaEnabled
// we get 404 response instead empty data
? masto.pushSubscriptions.fetch().catch(() => Promise.resolve(undefined))
: Promise.resolve(undefined),
])
user.account = me
user.pushSubscription = pushSubscription
currentUserId.value = me.id
instances.value[server] = instance
if (!user.account.acct.includes('@'))
user.account.acct = `${user.account.acct}@${instance.uri}`
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 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
// we remove the sw push manager if required and there are no more accounts with subscriptions
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if (pwaEnabled && fromSWPushManager && (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 {
await useMasto().pushSubscriptions.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>, number]>>({})
export const useNotifications = () => {
const id = currentUser.value?.account.id
const masto = useMasto()
const clearNotifications = () => {
if (!id || !notifications[id])
return
notifications[id]![1] = 0
}
async function connect(): Promise<void> {
if (!isMastoInitialised.value || !id || notifications[id] || !currentUser.value?.token)
return
const stream = masto.stream.streamUser()
notifications[id] = [stream, 0]
;(await stream).on('notification', () => {
if (notifications[id])
notifications[id]![1]++
})
}
function disconnect(): void {
if (!id || !notifications[id])
return
notifications[id]![0].then(stream => stream.disconnect())
notifications[id] = undefined
}
watch(currentUser, disconnect)
connect()
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return {
notifications: computed(() => id ? notifications[id]?.[1] ?? 0 : 0),
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
? `${currentUser.value.account.acct}@${currentInstance.value?.uri || currentServer.value}`
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: '[anonymous]'
all.value[id] = Object.assign(initial(), all.value[id] || {})
return all.value[id]
})
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}
/**
* Clear all storages for the given account
*/
export function clearUserLocalStorage(account?: Account) {
if (!account)
account = currentUser.value?.account
if (!account)
return
const id = `${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 = () => {
const api = shallowRef<MastoClient | null>(null)
const apiPromise = ref<Promise<MastoClient> | 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') {
return (...args: any[]): Promise<MastoClient> => {
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)
return api.value[key as keyof MastoClient]
if (!api.value) {
return new Proxy({}, {
get(_, subkey) {
return (...args: any[]) => apiPromise.value?.then((r: any) => r[key][subkey](...args))
},
})
}
return undefined
},
})
return masto
}