From 6b7df2bd10dc28b84f525a621b66fc49bf59cac6 Mon Sep 17 00:00:00 2001
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 <17376330+u1-liquid@users.noreply.github.com>
Date: Sat, 13 Apr 2024 15:57:10 +0900
Subject: [PATCH] =?UTF-8?q?fix(backend):=20=E7=99=BB=E9=8C=B2=E3=81=AB?=
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---
 .../backend/src/server/api/endpoints/i/update-email.ts | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/packages/backend/src/server/api/endpoints/i/update-email.ts b/packages/backend/src/server/api/endpoints/i/update-email.ts
index 52907e0aed..2796ac41da 100644
--- a/packages/backend/src/server/api/endpoints/i/update-email.ts
+++ b/packages/backend/src/server/api/endpoints/i/update-email.ts
@@ -15,6 +15,7 @@ import { DI } from '@/di-symbols.js';
 import { GlobalEventService } from '@/core/GlobalEventService.js';
 import { L_CHARS, secureRndstr } from '@/misc/secure-rndstr.js';
 import { UserAuthService } from '@/core/UserAuthService.js';
+import { MetaService } from '@/core/MetaService.js';
 import { ApiError } from '../../error.js';
 
 export const meta = {
@@ -46,6 +47,12 @@ export const meta = {
 			code: 'UNAVAILABLE',
 			id: 'a2defefb-f220-8849-0af6-17f816099323',
 		},
+
+		emailRequired: {
+			message: 'Email address is required.',
+			code: 'EMAIL_REQUIRED',
+			id: '324c7a88-59f2-492f-903f-89134f93e47e',
+		},
 	},
 
 	res: {
@@ -73,6 +80,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		@Inject(DI.userProfilesRepository)
 		private userProfilesRepository: UserProfilesRepository,
 
+		private metaService: MetaService,
 		private userEntityService: UserEntityService,
 		private emailService: EmailService,
 		private userAuthService: UserAuthService,
@@ -100,6 +108,8 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				if (!res.available) {
 					throw new ApiError(meta.errors.unavailable);
 				}
+			} else if ((await this.metaService.fetch()).emailRequiredForSignup) {
+				throw new ApiError(meta.errors.emailRequired);
 			}
 
 			await this.userProfilesRepository.update(me.id, {