fix(api): return the terminated count from terminate sessions (#2539)

fluxer_api/src/api/admin/services/AdminUserSecurityService.ts

@@ -315,7 +315,7 @@ export class AdminUserSecurityService {
 		if (!user) {
 			throw new UnknownUserError();
 		}
-		await AuthSession.terminateAllUserSessions(this.deps.apiContext, userId);
+		const terminatedCount = await AuthSession.terminateAllUserSessions(this.deps.apiContext, userId);
 		await auditService.createAuditLog({
 			adminUserId,
 			targetType: 'user',
@@ -324,6 +324,7 @@ export class AdminUserSecurityService {
 			auditLogReason,
 			metadata: new Map(),
 		});
+		return {terminated_count: terminatedCount};
 	}
 
 	async setUserAcls(

fluxer_api/src/api/auth/AuthSession.ts

@@ -178,18 +178,19 @@ export async function logoutAuthSessions(
 	});
 }
 
-export async function terminateAllUserSessions(ctx: ApiContext, userId: UserID): Promise<void> {
+export async function terminateAllUserSessions(ctx: ApiContext, userId: UserID): Promise<number> {
 	const {users, gateway} = ctx.services;
 	const authSessions = await users.listAuthSessions(userId);
 	await users.deleteAllPushSubscriptions(userId);
 	await gateway.invalidatePushSubscriptions({userId});
-	if (authSessions.length === 0) return;
+	if (authSessions.length === 0) return 0;
 	const hashes = authSessions.map((s) => s.sessionIdHash);
 	await users.deleteAuthSessions(userId, hashes);
 	await gateway.terminateSession({
 		userId,
 		sessionIdHashes: authSessions.map((s) => Buffer.from(s.sessionIdHash).toString('base64url')),
 	});
+	return authSessions.length;
 }
 
 export async function replaceCurrentAuthSession(