From f1f24e39d2df3135493e2c2087230b428e2d02b7 Mon Sep 17 00:00:00 2001
From: syuilo <4439005+syuilo@users.noreply.github.com>
Date: Mon, 24 Mar 2025 21:32:46 +0900
Subject: Feat: Chat (#15686)
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* wip

* wip

* wip

* wip

* wip

* wip

* Update types.ts

* Create 1742203321812-chat.js

* wip

* wip

* Update room.vue

* Update home.vue

* Update home.vue

* Update ja-JP.yml

* Update index.d.ts

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* Update CHANGELOG.md

* wip

* Update home.vue

* clean up

* Update misskey-js.api.md

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* lint fixes

* lint

* Update UserEntityService.ts

* search

* wip

* 🎨

* wip

* Update home.ownedRooms.vue

* wip

* Update CHANGELOG.md

* Update style.scss

* wip

* improve performance

* improve performance

* Update timeline.test.ts
---
 packages/backend/src/core/UserFollowingService.ts | 28 ++++++++++++++++++++++-
 1 file changed, 27 insertions(+), 1 deletion(-)

(limited to 'packages/backend/src/core/UserFollowingService.ts')

diff --git a/packages/backend/src/core/UserFollowingService.ts b/packages/backend/src/core/UserFollowingService.ts
index b98ca97ec9..e7a6be99fb 100644
--- a/packages/backend/src/core/UserFollowingService.ts
+++ b/packages/backend/src/core/UserFollowingService.ts
@@ -5,7 +5,7 @@
 
 import { Inject, Injectable, OnModuleInit } from '@nestjs/common';
 import { ModuleRef } from '@nestjs/core';
-import { IsNull } from 'typeorm';
+import { Brackets, IsNull } from 'typeorm';
 import type { MiLocalUser, MiPartialLocalUser, MiPartialRemoteUser, MiRemoteUser, MiUser } from '@/models/User.js';
 import { IdentifiableError } from '@/misc/identifiable-error.js';
 import { QueueService } from '@/core/QueueService.js';
@@ -736,4 +736,30 @@ export class UserFollowingService implements OnModuleInit {
 			.where('following.followerId = :followerId', { followerId: userId })
 			.getMany();
 	}
+
+	@bindThis
+	public isFollowing(followerId: MiUser['id'], followeeId: MiUser['id']) {
+		return this.followingsRepository.exists({
+			where: {
+				followerId,
+				followeeId,
+			},
+		});
+	}
+
+	@bindThis
+	public async isMutual(aUserId: MiUser['id'], bUserId: MiUser['id']) {
+		const count = await this.followingsRepository.createQueryBuilder('following')
+			.where(new Brackets(qb => {
+				qb.where('following.followerId = :aUserId', { aUserId })
+					.andWhere('following.followeeId = :bUserId', { bUserId });
+			}))
+			.orWhere(new Brackets(qb => {
+				qb.where('following.followerId = :bUserId', { bUserId })
+					.andWhere('following.followeeId = :aUserId', { aUserId });
+			}))
+			.getCount();
+
+		return count === 2;
+	}
 }
-- 
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