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|
import {type AtpSessionEvent, type BskyAgent} from '@atproto/api'
import {createPublicAgent} from './agent'
import {wrapSessionReducerForLogging} from './logging'
import {type SessionAccount} from './types'
// A hack so that the reducer can't read anything from the agent.
// From the reducer's point of view, it should be a completely opaque object.
type OpaqueBskyAgent = {
readonly service: URL
readonly api: unknown
readonly app: unknown
readonly com: unknown
}
type AgentState = {
readonly agent: OpaqueBskyAgent
readonly did: string | undefined
}
export type State = {
readonly accounts: SessionAccount[]
readonly currentAgentState: AgentState
needsPersist: boolean // Mutated in an effect.
}
export type Action =
| {
type: 'received-agent-event'
agent: OpaqueBskyAgent
accountDid: string
refreshedAccount: SessionAccount | undefined
sessionEvent: AtpSessionEvent
}
| {
type: 'switched-to-account'
newAgent: OpaqueBskyAgent
newAccount: SessionAccount
}
| {
type: 'removed-account'
accountDid: string
}
| {
type: 'logged-out-current-account'
}
| {
type: 'logged-out-every-account'
}
| {
type: 'synced-accounts'
syncedAccounts: SessionAccount[]
syncedCurrentDid: string | undefined
}
| {
type: 'partial-refresh-session'
accountDid: string
patch: Pick<SessionAccount, 'emailConfirmed' | 'emailAuthFactor'>
}
function createPublicAgentState(): AgentState {
return {
agent: createPublicAgent(),
did: undefined,
}
}
export function getInitialState(persistedAccounts: SessionAccount[]): State {
return {
accounts: persistedAccounts,
currentAgentState: createPublicAgentState(),
needsPersist: false,
}
}
let reducer = (state: State, action: Action): State => {
switch (action.type) {
case 'received-agent-event': {
const {agent, accountDid, refreshedAccount, sessionEvent} = action
if (
refreshedAccount === undefined &&
agent !== state.currentAgentState.agent
) {
// If the session got cleared out (e.g. due to expiry or network error) but
// this account isn't the active one, don't clear it out at this time.
// This way, if the problem is transient, it'll work on next resume.
return state
}
if (sessionEvent === 'network-error') {
// Assume it's transient.
return state
}
const existingAccount = state.accounts.find(a => a.did === accountDid)
if (
!existingAccount ||
JSON.stringify(existingAccount) === JSON.stringify(refreshedAccount)
) {
// Fast path without a state update.
return state
}
return {
accounts: state.accounts.map(a => {
if (a.did === accountDid) {
if (refreshedAccount) {
return refreshedAccount
} else {
return {
...a,
// If we didn't receive a refreshed account, clear out the tokens.
accessJwt: undefined,
refreshJwt: undefined,
}
}
} else {
return a
}
}),
currentAgentState: refreshedAccount
? state.currentAgentState
: createPublicAgentState(), // Log out if expired.
needsPersist: true,
}
}
case 'switched-to-account': {
const {newAccount, newAgent} = action
return {
accounts: [
newAccount,
...state.accounts.filter(a => a.did !== newAccount.did),
],
currentAgentState: {
did: newAccount.did,
agent: newAgent,
},
needsPersist: true,
}
}
case 'removed-account': {
const {accountDid} = action
return {
accounts: state.accounts.filter(a => a.did !== accountDid),
currentAgentState:
state.currentAgentState.did === accountDid
? createPublicAgentState() // Log out if removing the current one.
: state.currentAgentState,
needsPersist: true,
}
}
case 'logged-out-current-account': {
const {currentAgentState} = state
return {
accounts: state.accounts.map(a =>
a.did === currentAgentState.did
? {
...a,
refreshJwt: undefined,
accessJwt: undefined,
}
: a,
),
currentAgentState: createPublicAgentState(),
needsPersist: true,
}
}
case 'logged-out-every-account': {
return {
accounts: state.accounts.map(a => ({
...a,
// Clear tokens for *every* account (this is a hard logout).
refreshJwt: undefined,
accessJwt: undefined,
})),
currentAgentState: createPublicAgentState(),
needsPersist: true,
}
}
case 'synced-accounts': {
const {syncedAccounts, syncedCurrentDid} = action
return {
accounts: syncedAccounts,
currentAgentState:
syncedCurrentDid === state.currentAgentState.did
? state.currentAgentState
: createPublicAgentState(), // Log out if different user.
needsPersist: false, // Synced from another tab. Don't persist to avoid cycles.
}
}
case 'partial-refresh-session': {
const {accountDid, patch} = action
const agent = state.currentAgentState.agent as BskyAgent
/*
* Only mutating values that are safe. Be very careful with this.
*/
if (agent.session) {
agent.session.emailConfirmed =
patch.emailConfirmed ?? agent.session.emailConfirmed
agent.session.emailAuthFactor =
patch.emailAuthFactor ?? agent.session.emailAuthFactor
}
return {
...state,
currentAgentState: {
...state.currentAgentState,
agent,
},
accounts: state.accounts.map(a => {
if (a.did === accountDid) {
return {
...a,
emailConfirmed: patch.emailConfirmed ?? a.emailConfirmed,
emailAuthFactor: patch.emailAuthFactor ?? a.emailAuthFactor,
}
}
return a
}),
needsPersist: true,
}
}
}
}
reducer = wrapSessionReducerForLogging(reducer)
export {reducer}
|
