[Statsig] Track login/logout (#3286)

* [Statsig] Track login/logout

* Fix missing attribution

src/lib/hooks/useAccountSwitcher.ts

@@ -6,6 +6,7 @@ import {useSessionApi, SessionAccount} from '#/state/session'
 import * as Toast from '#/view/com/util/Toast'
 import {useCloseAllActiveElements} from '#/state/util'
 import {useLoggedOutViewControls} from '#/state/shell/logged-out'
+import {LogEvents} from '../statsig/statsig'
 
 export function useAccountSwitcher() {
   const {track} = useAnalytics()
@@ -14,7 +15,10 @@ export function useAccountSwitcher() {
   const {requestSwitchToAccount} = useLoggedOutViewControls()
 
   const onPressSwitchAccount = useCallback(
-    async (account: SessionAccount) => {
+    async (
+      account: SessionAccount,
+      logContext: LogEvents['account:loggedIn']['logContext'],
+    ) => {
       track('Settings:SwitchAccountButtonClicked')
 
       try {
@@ -28,7 +32,7 @@ export function useAccountSwitcher() {
             // So we change the URL ourselves. The navigator will pick it up on remount.
             history.pushState(null, '', '/')
           }
-          await selectAccount(account)
+          await selectAccount(account, logContext)
           setTimeout(() => {
             Toast.show(`Signed in as @${account.handle}`)
           }, 100)

src/lib/statsig/events.ts

@@ -2,6 +2,13 @@ export type LogEvents = {
   init: {
     initMs: number
   }
+  'account:loggedIn': {
+    logContext: 'LoginForm' | 'SwitchAccount' | 'ChooseAccountForm' | 'Settings'
+    withPassword: boolean
+  }
+  'account:loggedOut': {
+    logContext: 'SwitchAccount' | 'Settings' | 'Deactivated'
+  }
   'notifications:openApp': {}
   'state:background': {}
   'state:foreground': {}