Use listeners for easier to grok logic

src/components/dialogs/EmailDialog/data/useAccountEmailState.ts

@@ -1,14 +1,15 @@
-import {useCallback, useState} from 'react'
+import {useCallback, useEffect, useState} from 'react'
 import {useQuery, useQueryClient} from '@tanstack/react-query'
 
 import {useAgent} from '#/state/session'
+import {emitEmailVerified} from '#/components/dialogs/EmailDialog/events'
 
 export type AccountEmailState = {
   isEmailVerified: boolean
   email2FAEnabled: boolean
 }
 
-export const accountEmailStateQueryKey = ['isEmailVerified'] as const
+export const accountEmailStateQueryKey = ['accountEmailState'] as const
 
 export function useInvalidateAccountEmailState() {
   const qc = useQueryClient()
@@ -36,21 +37,17 @@ export function useUpdateAccountEmailStateQueryCache() {
   )
 }
 
-export function useAccountEmailState({
+export function useAccountEmailState() {
-  onVerify,
-}: {
-  onVerify?: () => void
-} = {}) {
   const agent = useAgent()
   const [prevIsEmailVerified, setPrevEmailIsVerified] = useState(
     !!agent.session?.emailConfirmed,
   )
+  const fallbackData: AccountEmailState = {
+    isEmailVerified: !!agent.session?.emailConfirmed,
+    email2FAEnabled: !!agent.session?.emailAuthFactor,
+  }
   const query = useQuery<AccountEmailState>({
     enabled: !!agent.session,
-    initialData: {
-      isEmailVerified: !!agent.session?.emailConfirmed,
-      email2FAEnabled: !!agent.session?.emailAuthFactor,
-    },
     refetchOnWindowFocus: true,
     queryKey: accountEmailStateQueryKey,
     queryFn: async () => {
@@ -63,12 +60,20 @@ export function useAccountEmailState({
     },
   })
 
-  if (query.data.isEmailVerified && !prevIsEmailVerified) {
+  const state = query.data ?? fallbackData
-    setPrevEmailIsVerified(true)
-    onVerify?.()
-  } else if (!query.data.isEmailVerified && prevIsEmailVerified) {
-    setPrevEmailIsVerified(false)
-  }
 
-  return query.data
+  /*
+   * This will emit `n` times for each instance of this hook. So the listeners
+   * all use `once` to prevent multiple handlers firing.
+   */
+  useEffect(() => {
+    if (state.isEmailVerified && !prevIsEmailVerified) {
+      setPrevEmailIsVerified(true)
+      emitEmailVerified()
+    } else if (!state.isEmailVerified && prevIsEmailVerified) {
+      setPrevEmailIsVerified(false)
+    }
+  }, [state, prevIsEmailVerified])
+
+  return state
 }

src/components/dialogs/EmailDialog/events.ts

@@ -0,0 +1,23 @@
+import {useEffect} from 'react'
+import EventEmitter from 'eventemitter3'
+
+const events = new EventEmitter<{
+  emailVerified: void
+}>()
+
+export function emitEmailVerified() {
+  events.emit('emailVerified')
+}
+
+export function useOnEmailVerified(cb: () => void) {
+  useEffect(() => {
+    /*
+     * N.B. Use `once` here, since the event can fire multiple times for each
+     * instance of `useAccountEmailState`
+     */
+    events.once('emailVerified', cb)
+    return () => {
+      events.off('emailVerified', cb)
+    }
+  }, [cb])
+}

src/components/dialogs/EmailDialog/screens/Update.tsx

@@ -207,6 +207,7 @@ export function Update(_props: ScreenProps<ScreenID.Update>) {
               }
               keyboardType="email-address"
               autoComplete="email"
+              autoCapitalize="none"
               onSubmitEditing={handleUpdateEmail}
             />
           </TextField.Root>

src/components/dialogs/EmailDialog/screens/Verify.tsx

@@ -1,4 +1,4 @@
-import {useCallback, useReducer} from 'react'
+import {useReducer} from 'react'
 import {View} from 'react-native'
 import {msg, Trans} from '@lingui/macro'
 import {useLingui} from '@lingui/react'
@@ -11,9 +11,9 @@ import {Admonition} from '#/components/Admonition'
 import {Button, ButtonIcon, ButtonText} from '#/components/Button'
 import {ResendEmailText} from '#/components/dialogs/EmailDialog/components/ResendEmailText'
 import {TokenField} from '#/components/dialogs/EmailDialog/components/TokenField'
-import {useAccountEmailState} from '#/components/dialogs/EmailDialog/data/useAccountEmailState'
 import {useConfirmEmail} from '#/components/dialogs/EmailDialog/data/useConfirmEmail'
 import {useRequestEmailVerification} from '#/components/dialogs/EmailDialog/data/useRequestEmailVerification'
+import {useOnEmailVerified} from '#/components/dialogs/EmailDialog/events'
 import {
   type ScreenID,
   type ScreenProps,
@@ -98,7 +98,7 @@ export function Verify({config}: ScreenProps<ScreenID.Verify>) {
   const {mutateAsync: requestEmailVerification} = useRequestEmailVerification()
   const {mutateAsync: confirmEmail} = useConfirmEmail()
 
-  const onVerify = useCallback(() => {
+  useOnEmailVerified(() => {
     if (config.onVerify) {
       config.onVerify()
     } else {
@@ -107,8 +107,7 @@ export function Verify({config}: ScreenProps<ScreenID.Verify>) {
         step: 'success',
       })
     }
-  }, [config, dispatch])
+  })
-  useAccountEmailState({onVerify})
 
   const handleRequestEmailVerification = async () => {
     dispatch({