perf(backend): cache local custom emojis

8 files changed, 221 insertions, 75 deletions

diff --git a/packages/backend/src/core/CustomEmojiService.ts b/packages/backend/src/core/CustomEmojiService.ts
index 1c3b60e5d7..604a94707f 100644
--- a/packages/backend/src/core/CustomEmojiService.ts
+++ b/packages/backend/src/core/CustomEmojiService.ts
@@ -1,24 +1,28 @@
 import { Inject, Injectable } from '@nestjs/common';
 import { DataSource, In, IsNull } from 'typeorm';
+import Redis from 'ioredis';
 import { DI } from '@/di-symbols.js';
 import { IdService } from '@/core/IdService.js';
 import { EmojiEntityService } from '@/core/entities/EmojiEntityService.js';
 import { GlobalEventService } from '@/core/GlobalEventService.js';
 import type { DriveFile } from '@/models/entities/DriveFile.js';
 import type { Emoji } from '@/models/entities/Emoji.js';
-import type { EmojisRepository, Note } from '@/models/index.js';
+import type { EmojisRepository } from '@/models/index.js';
 import { bindThis } from '@/decorators.js';
-import { MemoryKVCache } from '@/misc/cache.js';
+import { MemoryKVCache, RedisSingleCache } from '@/misc/cache.js';
 import { UtilityService } from '@/core/UtilityService.js';
 import type { Config } from '@/config.js';
-import { ReactionService } from '@/core/ReactionService.js';
 import { query } from '@/misc/prelude/url.js';
 
 @Injectable()
 export class CustomEmojiService {
 	private cache: MemoryKVCache<Emoji | null>;
+	public localEmojisCache: RedisSingleCache<Map<string, Emoji>>;
 
 	constructor(
+		@Inject(DI.redis)
+		private redisClient: Redis.Redis,
+
 		@Inject(DI.config)
 		private config: Config,
 
@@ -32,9 +36,16 @@ export class CustomEmojiService {
 		private idService: IdService,
 		private emojiEntityService: EmojiEntityService,
 		private globalEventService: GlobalEventService,
-		private reactionService: ReactionService,
 	) {
 		this.cache = new MemoryKVCache<Emoji | null>(1000 * 60 * 60 * 12);
+
+		this.localEmojisCache = new RedisSingleCache<Map<string, Emoji>>(this.redisClient, 'localEmojis', {
+			lifetime: 1000 * 60 * 30, // 30m
+			memoryCacheLifetime: 1000 * 60 * 3, // 3m
+			fetcher: () => this.emojisRepository.find({ where: { host: IsNull() } }).then(emojis => new Map(emojis.map(emoji => [emoji.name, emoji]))),
+			toRedisConverter: (value) => JSON.stringify(value.values()),
+			fromRedisConverter: (value) => new Map(JSON.parse(value).map((x: Emoji) => [x.name, x])), // TODO: Date型の変換
+		});
 	}
 
 	@bindThis
@@ -60,7 +71,7 @@ export class CustomEmojiService {
 		}).then(x => this.emojisRepository.findOneByOrFail(x.identifiers[0]));
 
 		if (data.host == null) {
-			await this.db.queryResultCache?.remove(['meta_emojis']);
+			this.localEmojisCache.refresh();
 
 			this.globalEventService.publishBroadcastStream('emojiAdded', {
 				emoji: await this.emojiEntityService.packDetailed(emoji.id),
@@ -71,6 +82,146 @@ export class CustomEmojiService {
 	}
 
 	@bindThis
+	public async update(id: Emoji['id'], data: {
+		name?: string;
+		category?: string | null;
+		aliases?: string[];
+		license?: string | null;
+	}): Promise<void> {
+		const emoji = await this.emojisRepository.findOneByOrFail({ id: id });
+		const sameNameEmoji = await this.emojisRepository.findOneBy({ name: data.name, host: IsNull() });
+		if (sameNameEmoji != null && sameNameEmoji.id !== id) throw new Error('name already exists');
+
+		await this.emojisRepository.update(emoji.id, {
+			updatedAt: new Date(),
+			name: data.name,
+			category: data.category,
+			aliases: data.aliases,
+			license: data.license,
+		});
+
+		this.localEmojisCache.refresh();
+
+		const updated = await this.emojiEntityService.packDetailed(emoji.id);
+
+		if (emoji.name === data.name) {
+			this.globalEventService.publishBroadcastStream('emojiUpdated', {
+				emojis: [updated],
+			});
+		} else {
+			this.globalEventService.publishBroadcastStream('emojiDeleted', {
+				emojis: [await this.emojiEntityService.packDetailed(emoji)],
+			});
+
+			this.globalEventService.publishBroadcastStream('emojiAdded', {
+				emoji: updated,
+			});	
+		}
+	}
+
+	@bindThis
+	public async addAliasesBulk(ids: Emoji['id'][], aliases: string[]) {
+		const emojis = await this.emojisRepository.findBy({
+			id: In(ids),
+		});
+
+		for (const emoji of emojis) {
+			await this.emojisRepository.update(emoji.id, {
+				updatedAt: new Date(),
+				aliases: [...new Set(emoji.aliases.concat(aliases))],
+			});
+		}
+
+		this.localEmojisCache.refresh();
+
+		this.globalEventService.publishBroadcastStream('emojiUpdated', {
+			emojis: await this.emojiEntityService.packDetailedMany(ids),
+		});
+	}
+
+	@bindThis
+	public async setAliasesBulk(ids: Emoji['id'][], aliases: string[]) {
+		await this.emojisRepository.update({
+			id: In(ids),
+		}, {
+			updatedAt: new Date(),
+			aliases: aliases,
+		});
+
+		this.localEmojisCache.refresh();
+
+		this.globalEventService.publishBroadcastStream('emojiUpdated', {
+			emojis: await this.emojiEntityService.packDetailedMany(ids),
+		});
+	}
+
+	@bindThis
+	public async removeAliasesBulk(ids: Emoji['id'][], aliases: string[]) {
+		const emojis = await this.emojisRepository.findBy({
+			id: In(ids),
+		});
+
+		for (const emoji of emojis) {
+			await this.emojisRepository.update(emoji.id, {
+				updatedAt: new Date(),
+				aliases: emoji.aliases.filter(x => !aliases.includes(x)),
+			});
+		}
+
+		this.localEmojisCache.refresh();
+	
+		this.globalEventService.publishBroadcastStream('emojiUpdated', {
+			emojis: await this.emojiEntityService.packDetailedMany(ids),
+		});
+	}
+
+	@bindThis
+	public async setCategoryBulk(ids: Emoji['id'][], category: string | null) {
+		await this.emojisRepository.update({
+			id: In(ids),
+		}, {
+			updatedAt: new Date(),
+			category: category,
+		});
+
+		this.localEmojisCache.refresh();
+
+		this.globalEventService.publishBroadcastStream('emojiUpdated', {
+			emojis: await this.emojiEntityService.packDetailedMany(ids),
+		});
+	}
+
+	@bindThis
+	public async delete(id: Emoji['id']) {
+		const emoji = await this.emojisRepository.findOneByOrFail({ id: id });
+
+		await this.emojisRepository.delete(emoji.id);
+
+		this.localEmojisCache.refresh();
+
+		this.globalEventService.publishBroadcastStream('emojiDeleted', {
+			emojis: [await this.emojiEntityService.packDetailed(emoji)],
+		});
+	}
+
+	@bindThis
+	public async deleteBulk(ids: Emoji['id'][]) {
+		const emojis = await this.emojisRepository.findBy({
+			id: In(ids),
+		});
+
+		for (const emoji of emojis) {
+			await this.emojisRepository.delete(emoji.id);
+		}
+
+		this.localEmojisCache.refresh();
+
+		this.globalEventService.publishBroadcastStream('emojiDeleted', {
+			emojis: await this.emojiEntityService.packDetailedMany(emojis),
+		});
+	}
+
+	@bindThis
 	private normalizeHost(src: string | undefined, noteUserHost: string | null): string | null {
 	// クエリに使うホスト
 		let host = src === '.' ? null	// .はローカルホスト (ここがマッチするのはリアクションのみ)
@@ -84,7 +235,7 @@ export class CustomEmojiService {
 	}
 
 	@bindThis
-	private parseEmojiStr(emojiName: string, noteUserHost: string | null) {
+	public parseEmojiStr(emojiName: string, noteUserHost: string | null) {
 		const match = emojiName.match(/^(\w+)(?:@([\w.-]+))?$/);
 		if (!match) return { name: null, host: null };
 
@@ -143,30 +294,6 @@ export class CustomEmojiService {
 		return res;
 	}
 
-	@bindThis
-	public aggregateNoteEmojis(notes: Note[]) {
-		let emojis: { name: string | null; host: string | null; }[] = [];
-		for (const note of notes) {
-			emojis = emojis.concat(note.emojis
-				.map(e => this.parseEmojiStr(e, note.userHost)));
-			if (note.renote) {
-				emojis = emojis.concat(note.renote.emojis
-					.map(e => this.parseEmojiStr(e, note.renote!.userHost)));
-				if (note.renote.user) {
-					emojis = emojis.concat(note.renote.user.emojis
-						.map(e => this.parseEmojiStr(e, note.renote!.userHost)));
-				}
-			}
-			const customReactions = Object.keys(note.reactions).map(x => this.reactionService.decodeReaction(x)).filter(x => x.name != null) as typeof emojis;
-			emojis = emojis.concat(customReactions);
-			if (note.user) {
-				emojis = emojis.concat(note.user.emojis
-					.map(e => this.parseEmojiStr(e, note.userHost)));
-			}
-		}
-		return emojis.filter(x => x.name != null && x.host != null) as { name: string; host: string; }[];
-	}
-
 	/**
 	 * 与えられた絵文字のリストをデータベースから取得し、キャッシュに追加します
 	 */
diff --git a/packages/backend/src/core/InstanceActorService.ts b/packages/backend/src/core/InstanceActorService.ts
index 898fb4ce85..4fb3fc5b4f 100644
--- a/packages/backend/src/core/InstanceActorService.ts
+++ b/packages/backend/src/core/InstanceActorService.ts
@@ -2,7 +2,7 @@ import { Inject, Injectable } from '@nestjs/common';
 import { IsNull } from 'typeorm';
 import type { LocalUser } from '@/models/entities/User.js';
 import type { UsersRepository } from '@/models/index.js';
-import { MemoryCache } from '@/misc/cache.js';
+import { MemorySingleCache } from '@/misc/cache.js';
 import { DI } from '@/di-symbols.js';
 import { CreateSystemUserService } from '@/core/CreateSystemUserService.js';
 import { bindThis } from '@/decorators.js';
@@ -11,7 +11,7 @@ const ACTOR_USERNAME = 'instance.actor' as const;
 
 @Injectable()
 export class InstanceActorService {
-	private cache: MemoryCache<LocalUser>;
+	private cache: MemorySingleCache<LocalUser>;
 
 	constructor(
 		@Inject(DI.usersRepository)
@@ -19,7 +19,7 @@ export class InstanceActorService {
 
 		private createSystemUserService: CreateSystemUserService,
 	) {
-		this.cache = new MemoryCache<LocalUser>(Infinity);
+		this.cache = new MemorySingleCache<LocalUser>(Infinity);
 	}
 
 	@bindThis
diff --git a/packages/backend/src/core/NoteCreateService.ts b/packages/backend/src/core/NoteCreateService.ts
index fcc17ace1e..5c4d13f178 100644
--- a/packages/backend/src/core/NoteCreateService.ts
+++ b/packages/backend/src/core/NoteCreateService.ts
@@ -20,7 +20,7 @@ import { isDuplicateKeyValueError } from '@/misc/is-duplicate-key-value-error.js
 import { checkWordMute } from '@/misc/check-word-mute.js';
 import type { Channel } from '@/models/entities/Channel.js';
 import { normalizeForSearch } from '@/misc/normalize-for-search.js';
-import { MemoryCache } from '@/misc/cache.js';
+import { MemorySingleCache } from '@/misc/cache.js';
 import type { UserProfile } from '@/models/entities/UserProfile.js';
 import { RelayService } from '@/core/RelayService.js';
 import { FederatedInstanceService } from '@/core/FederatedInstanceService.js';
@@ -47,7 +47,7 @@ import { DB_MAX_NOTE_TEXT_LENGTH } from '@/const.js';
 import { RoleService } from '@/core/RoleService.js';
 import { MetaService } from '@/core/MetaService.js';
 
-const mutedWordsCache = new MemoryCache<{ userId: UserProfile['userId']; mutedWords: UserProfile['mutedWords']; }[]>(1000 * 60 * 5);
+const mutedWordsCache = new MemorySingleCache<{ userId: UserProfile['userId']; mutedWords: UserProfile['mutedWords']; }[]>(1000 * 60 * 5);
 
 type NotificationType = 'reply' | 'renote' | 'quote' | 'mention';
 
diff --git a/packages/backend/src/core/ReactionService.ts b/packages/backend/src/core/ReactionService.ts
index 97a0b5ee66..a274b19e4b 100644
--- a/packages/backend/src/core/ReactionService.ts
+++ b/packages/backend/src/core/ReactionService.ts
@@ -1,7 +1,6 @@
 import { Inject, Injectable } from '@nestjs/common';
-import { IsNull } from 'typeorm';
 import { DI } from '@/di-symbols.js';
-import type { EmojisRepository, BlockingsRepository, NoteReactionsRepository, UsersRepository, NotesRepository } from '@/models/index.js';
+import type { EmojisRepository, NoteReactionsRepository, UsersRepository, NotesRepository } from '@/models/index.js';
 import { IdentifiableError } from '@/misc/identifiable-error.js';
 import type { RemoteUser, User } from '@/models/entities/User.js';
 import type { Note } from '@/models/entities/Note.js';
@@ -20,6 +19,7 @@ import { MetaService } from '@/core/MetaService.js';
 import { bindThis } from '@/decorators.js';
 import { UtilityService } from '@/core/UtilityService.js';
 import { UserBlockingService } from '@/core/UserBlockingService.js';
+import { CustomEmojiService } from '@/core/CustomEmojiService.js';
 
 const FALLBACK = '❤';
 
@@ -60,9 +60,6 @@ export class ReactionService {
 		@Inject(DI.usersRepository)
 		private usersRepository: UsersRepository,
 
-		@Inject(DI.blockingsRepository)
-		private blockingsRepository: BlockingsRepository,
-
 		@Inject(DI.notesRepository)
 		private notesRepository: NotesRepository,
 
@@ -74,6 +71,7 @@ export class ReactionService {
 
 		private utilityService: UtilityService,
 		private metaService: MetaService,
+		private customEmojiService: CustomEmojiService,
 		private userEntityService: UserEntityService,
 		private noteEntityService: NoteEntityService,
 		private userBlockingService: UserBlockingService,
@@ -104,7 +102,6 @@ export class ReactionService {
 		if (note.reactionAcceptance === 'likeOnly' || ((note.reactionAcceptance === 'likeOnlyForRemote') && (user.host != null))) {
 			reaction = '❤️';
 		} else {
-			// TODO: cache
 			reaction = await this.toDbReaction(reaction, user.host);
 		}
 
@@ -158,21 +155,22 @@ export class ReactionService {
 		// カスタム絵文字リアクションだったら絵文字情報も送る
 		const decodedReaction = this.decodeReaction(reaction);
 
-		// TODO: Cache
-		const emoji = await this.emojisRepository.findOne({
-			where: {
-				name: decodedReaction.name,
-				host: decodedReaction.host ?? IsNull(),
-			},
-			select: ['name', 'host', 'originalUrl', 'publicUrl'],
-		});
+		const customEmoji = decodedReaction.name == null ? null : decodedReaction.host == null
+			? (await this.customEmojiService.localEmojisCache.fetch()).get(decodedReaction.name)
+			: await this.emojisRepository.findOne(
+				{
+					where: {
+						name: decodedReaction.name,
+						host: decodedReaction.host,
+					},
+				});
 
 		this.globalEventService.publishNoteStream(note.id, 'reacted', {
 			reaction: decodedReaction.reaction,
-			emoji: emoji != null ? {
-				name: emoji.host ? `${emoji.name}@${emoji.host}` : `${emoji.name}@.`,
+			emoji: customEmoji != null ? {
+				name: customEmoji.host ? `${customEmoji.name}@${customEmoji.host}` : `${customEmoji.name}@.`,
 				// || emoji.originalUrl してるのは後方互換性のため（publicUrlはstringなので??はだめ）
-				url: emoji.publicUrl || emoji.originalUrl,
+				url: customEmoji.publicUrl || customEmoji.originalUrl,
 			} : null,
 			userId: user.id,
 		});
@@ -311,10 +309,12 @@ export class ReactionService {
 		const custom = reaction.match(/^:([\w+-]+)(?:@\.)?:$/);
 		if (custom) {
 			const name = custom[1];
-			const emoji = await this.emojisRepository.findOneBy({
-				host: reacterHost ?? IsNull(),
-				name,
-			});
+			const emoji = reacterHost == null
+				? (await this.customEmojiService.localEmojisCache.fetch()).get(name)
+				: await this.emojisRepository.findOneBy({
+					host: reacterHost,
+					name,
+				});
 
 			if (emoji) return reacterHost ? `:${name}@${reacterHost}:` : `:${name}:`;
 		}
diff --git a/packages/backend/src/core/RelayService.ts b/packages/backend/src/core/RelayService.ts
index 4df7fb3bff..9d34d82be2 100644
--- a/packages/backend/src/core/RelayService.ts
+++ b/packages/backend/src/core/RelayService.ts
@@ -3,7 +3,7 @@ import { IsNull } from 'typeorm';
 import type { LocalUser, User } from '@/models/entities/User.js';
 import type { RelaysRepository, UsersRepository } from '@/models/index.js';
 import { IdService } from '@/core/IdService.js';
-import { MemoryCache } from '@/misc/cache.js';
+import { MemorySingleCache } from '@/misc/cache.js';
 import type { Relay } from '@/models/entities/Relay.js';
 import { QueueService } from '@/core/QueueService.js';
 import { CreateSystemUserService } from '@/core/CreateSystemUserService.js';
@@ -16,7 +16,7 @@ const ACTOR_USERNAME = 'relay.actor' as const;
 
 @Injectable()
 export class RelayService {
-	private relaysCache: MemoryCache<Relay[]>;
+	private relaysCache: MemorySingleCache<Relay[]>;
 
 	constructor(
 		@Inject(DI.usersRepository)
@@ -30,7 +30,7 @@ export class RelayService {
 		private createSystemUserService: CreateSystemUserService,
 		private apRendererService: ApRendererService,
 	) {
-		this.relaysCache = new MemoryCache<Relay[]>(1000 * 60 * 10);
+		this.relaysCache = new MemorySingleCache<Relay[]>(1000 * 60 * 10);
 	}
 
 	@bindThis
diff --git a/packages/backend/src/core/RoleService.ts b/packages/backend/src/core/RoleService.ts
index 52e6292a1e..54e098ea52 100644
--- a/packages/backend/src/core/RoleService.ts
+++ b/packages/backend/src/core/RoleService.ts
@@ -2,7 +2,7 @@ import { Inject, Injectable } from '@nestjs/common';
 import Redis from 'ioredis';
 import { In } from 'typeorm';
 import type { Role, RoleAssignment, RoleAssignmentsRepository, RolesRepository, UsersRepository } from '@/models/index.js';
-import { MemoryKVCache, MemoryCache } from '@/misc/cache.js';
+import { MemoryKVCache, MemorySingleCache } from '@/misc/cache.js';
 import type { User } from '@/models/entities/User.js';
 import { DI } from '@/di-symbols.js';
 import { bindThis } from '@/decorators.js';
@@ -57,7 +57,7 @@ export const DEFAULT_POLICIES: RolePolicies = {
 
 @Injectable()
 export class RoleService implements OnApplicationShutdown {
-	private rolesCache: MemoryCache<Role[]>;
+	private rolesCache: MemorySingleCache<Role[]>;
 	private roleAssignmentByUserIdCache: MemoryKVCache<RoleAssignment[]>;
 
 	public static AlreadyAssignedError = class extends Error {};
@@ -84,7 +84,7 @@ export class RoleService implements OnApplicationShutdown {
 	) {
 		//this.onMessage = this.onMessage.bind(this);
 
-		this.rolesCache = new MemoryCache<Role[]>(Infinity);
+		this.rolesCache = new MemorySingleCache<Role[]>(Infinity);
 		this.roleAssignmentByUserIdCache = new MemoryKVCache<RoleAssignment[]>(Infinity);
 
 		this.redisSubscriber.on('message', this.onMessage);
diff --git a/packages/backend/src/core/activitypub/ApRendererService.ts b/packages/backend/src/core/activitypub/ApRendererService.ts
index 15512c8f47..b250b796d6 100644
--- a/packages/backend/src/core/activitypub/ApRendererService.ts
+++ b/packages/backend/src/core/activitypub/ApRendererService.ts
@@ -21,6 +21,8 @@ import { DriveFileEntityService } from '@/core/entities/DriveFileEntityService.j
 import type { UserKeypair } from '@/models/entities/UserKeypair.js';
 import type { UsersRepository, UserProfilesRepository, NotesRepository, DriveFilesRepository, EmojisRepository, PollsRepository } from '@/models/index.js';
 import { bindThis } from '@/decorators.js';
+import { CustomEmojiService } from '@/core/CustomEmojiService.js';
+import { isNotNull } from '@/misc/is-not-null.js';
 import { LdSignatureService } from './LdSignatureService.js';
 import { ApMfmService } from './ApMfmService.js';
 import type { IAccept, IActivity, IAdd, IAnnounce, IApDocument, IApEmoji, IApHashtag, IApImage, IApMention, IBlock, ICreate, IDelete, IFlag, IFollow, IKey, ILike, IObject, IPost, IQuestion, IReject, IRemove, ITombstone, IUndo, IUpdate } from './type.js';
@@ -50,6 +52,7 @@ export class ApRendererService {
 		@Inject(DI.pollsRepository)
 		private pollsRepository: PollsRepository,
 
+		private customEmojiService: CustomEmojiService,
 		private userEntityService: UserEntityService,
 		private driveFileEntityService: DriveFileEntityService,
 		private ldSignatureService: LdSignatureService,
@@ -272,11 +275,7 @@ export class ApRendererService {
 
 		if (reaction.startsWith(':')) {
 			const name = reaction.replaceAll(':', '');
-			// TODO: cache
-			const emoji = await this.emojisRepository.findOneBy({
-				name,
-				host: IsNull(),
-			});
+			const emoji = (await this.customEmojiService.localEmojisCache.fetch()).get(name);
 
 			if (emoji) object.tag = [this.renderEmoji(emoji)];
 		}
@@ -701,13 +700,9 @@ export class ApRendererService {
 	private async getEmojis(names: string[]): Promise<Emoji[]> {
 		if (names == null || names.length === 0) return [];
 
-		const emojis = await Promise.all(
-			names.map(name => this.emojisRepository.findOneBy({
-				name,
-				host: IsNull(),
-			})),
-		);
+		const allEmojis = await this.customEmojiService.localEmojisCache.fetch();
+		const emojis = names.map(name => allEmojis.get(name)).filter(isNotNull);
 
-		return emojis.filter(emoji => emoji != null) as Emoji[];
+		return emojis;
 	}
 }
diff --git a/packages/backend/src/core/entities/NoteEntityService.ts b/packages/backend/src/core/entities/NoteEntityService.ts
index 5660600692..94b3029c58 100644
--- a/packages/backend/src/core/entities/NoteEntityService.ts
+++ b/packages/backend/src/core/entities/NoteEntityService.ts
@@ -406,7 +406,7 @@ export class NoteEntityService implements OnModuleInit {
 			}
 		}
 
-		await this.customEmojiService.prefetchEmojis(this.customEmojiService.aggregateNoteEmojis(notes));
+		await this.customEmojiService.prefetchEmojis(this.aggregateNoteEmojis(notes));
 		// TODO: 本当は renote とか reply がないのに renoteId とか replyId があったらここで解決しておく
 		const fileIds = notes.map(n => [n.fileIds, n.renote?.fileIds, n.reply?.fileIds]).flat(2).filter(isNotNull);
 		const packedFiles = await this.driveFileEntityService.packManyByIdsMap(fileIds);
@@ -421,6 +421,30 @@ export class NoteEntityService implements OnModuleInit {
 	}
 
 	@bindThis
+	public aggregateNoteEmojis(notes: Note[]) {
+		let emojis: { name: string | null; host: string | null; }[] = [];
+		for (const note of notes) {
+			emojis = emojis.concat(note.emojis
+				.map(e => this.customEmojiService.parseEmojiStr(e, note.userHost)));
+			if (note.renote) {
+				emojis = emojis.concat(note.renote.emojis
+					.map(e => this.customEmojiService.parseEmojiStr(e, note.renote!.userHost)));
+				if (note.renote.user) {
+					emojis = emojis.concat(note.renote.user.emojis
+						.map(e => this.customEmojiService.parseEmojiStr(e, note.renote!.userHost)));
+				}
+			}
+			const customReactions = Object.keys(note.reactions).map(x => this.reactionService.decodeReaction(x)).filter(x => x.name != null) as typeof emojis;
+			emojis = emojis.concat(customReactions);
+			if (note.user) {
+				emojis = emojis.concat(note.user.emojis
+					.map(e => this.customEmojiService.parseEmojiStr(e, note.userHost)));
+			}
+		}
+		return emojis.filter(x => x.name != null && x.host != null) as { name: string; host: string; }[];
+	}
+
+	@bindThis
 	public async countSameRenotes(userId: string, renoteId: string, excludeNoteId: string | undefined): Promise<number> {
 		// 指定したユーザーの指定したノートのリノートがいくつあるか数える
 		const query = this.notesRepository.createQueryBuilder('note')