merge: upstream (1)

6 files changed, 826 insertions, 27 deletions

diff --git a/packages/backend/src/core/CoreModule.ts b/packages/backend/src/core/CoreModule.ts
index fa868ff8b0..4c6713e0c0 100644
--- a/packages/backend/src/core/CoreModule.ts
+++ b/packages/backend/src/core/CoreModule.ts
@@ -66,6 +66,8 @@ import { FeaturedService } from './FeaturedService.js';
 import { FanoutTimelineService } from './FanoutTimelineService.js';
 import { ChannelFollowingService } from './ChannelFollowingService.js';
 import { RegistryApiService } from './RegistryApiService.js';
+import { ReversiService } from './ReversiService.js';
+
 import { ChartLoggerService } from './chart/ChartLoggerService.js';
 import FederationChart from './chart/charts/federation.js';
 import NotesChart from './chart/charts/notes.js';
@@ -80,6 +82,7 @@ import PerUserFollowingChart from './chart/charts/per-user-following.js';
 import PerUserDriveChart from './chart/charts/per-user-drive.js';
 import ApRequestChart from './chart/charts/ap-request.js';
 import { ChartManagementService } from './chart/ChartManagementService.js';
+
 import { AbuseUserReportEntityService } from './entities/AbuseUserReportEntityService.js';
 import { AntennaEntityService } from './entities/AntennaEntityService.js';
 import { AppEntityService } from './entities/AppEntityService.js';
@@ -112,6 +115,8 @@ import { UserListEntityService } from './entities/UserListEntityService.js';
 import { FlashEntityService } from './entities/FlashEntityService.js';
 import { FlashLikeEntityService } from './entities/FlashLikeEntityService.js';
 import { RoleEntityService } from './entities/RoleEntityService.js';
+import { ReversiGameEntityService } from './entities/ReversiGameEntityService.js';
+
 import { ApAudienceService } from './activitypub/ApAudienceService.js';
 import { ApDbResolverService } from './activitypub/ApDbResolverService.js';
 import { ApDeliverManagerService } from './activitypub/ApDeliverManagerService.js';
@@ -199,6 +204,7 @@ const $FanoutTimelineService: Provider = { provide: 'FanoutTimelineService', use
 const $FanoutTimelineEndpointService: Provider = { provide: 'FanoutTimelineEndpointService', useExisting: FanoutTimelineEndpointService };
 const $ChannelFollowingService: Provider = { provide: 'ChannelFollowingService', useExisting: ChannelFollowingService };
 const $RegistryApiService: Provider = { provide: 'RegistryApiService', useExisting: RegistryApiService };
+const $ReversiService: Provider = { provide: 'ReversiService', useExisting: ReversiService };
 
 const $ChartLoggerService: Provider = { provide: 'ChartLoggerService', useExisting: ChartLoggerService };
 const $FederationChart: Provider = { provide: 'FederationChart', useExisting: FederationChart };
@@ -247,6 +253,7 @@ const $UserListEntityService: Provider = { provide: 'UserListEntityService', use
 const $FlashEntityService: Provider = { provide: 'FlashEntityService', useExisting: FlashEntityService };
 const $FlashLikeEntityService: Provider = { provide: 'FlashLikeEntityService', useExisting: FlashLikeEntityService };
 const $RoleEntityService: Provider = { provide: 'RoleEntityService', useExisting: RoleEntityService };
+const $ReversiGameEntityService: Provider = { provide: 'ReversiGameEntityService', useExisting: ReversiGameEntityService };
 
 const $ApAudienceService: Provider = { provide: 'ApAudienceService', useExisting: ApAudienceService };
 const $ApDbResolverService: Provider = { provide: 'ApDbResolverService', useExisting: ApDbResolverService };
@@ -336,6 +343,8 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		FanoutTimelineEndpointService,
 		ChannelFollowingService,
 		RegistryApiService,
+		ReversiService,
+
 		ChartLoggerService,
 		FederationChart,
 		NotesChart,
@@ -350,6 +359,7 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		PerUserDriveChart,
 		ApRequestChart,
 		ChartManagementService,
+
 		AbuseUserReportEntityService,
 		AntennaEntityService,
 		AppEntityService,
@@ -382,6 +392,8 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		FlashEntityService,
 		FlashLikeEntityService,
 		RoleEntityService,
+		ReversiGameEntityService,
+
 		ApAudienceService,
 		ApDbResolverService,
 		ApDeliverManagerService,
@@ -466,6 +478,8 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		$FanoutTimelineEndpointService,
 		$ChannelFollowingService,
 		$RegistryApiService,
+		$ReversiService,
+
 		$ChartLoggerService,
 		$FederationChart,
 		$NotesChart,
@@ -480,6 +494,7 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		$PerUserDriveChart,
 		$ApRequestChart,
 		$ChartManagementService,
+
 		$AbuseUserReportEntityService,
 		$AntennaEntityService,
 		$AppEntityService,
@@ -512,6 +527,8 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		$FlashEntityService,
 		$FlashLikeEntityService,
 		$RoleEntityService,
+		$ReversiGameEntityService,
+
 		$ApAudienceService,
 		$ApDbResolverService,
 		$ApDeliverManagerService,
@@ -597,6 +614,8 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		FanoutTimelineEndpointService,
 		ChannelFollowingService,
 		RegistryApiService,
+		ReversiService,
+
 		FederationChart,
 		NotesChart,
 		UsersChart,
@@ -610,6 +629,7 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		PerUserDriveChart,
 		ApRequestChart,
 		ChartManagementService,
+
 		AbuseUserReportEntityService,
 		AntennaEntityService,
 		AppEntityService,
@@ -642,6 +662,8 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		FlashEntityService,
 		FlashLikeEntityService,
 		RoleEntityService,
+		ReversiGameEntityService,
+
 		ApAudienceService,
 		ApDbResolverService,
 		ApDeliverManagerService,
@@ -726,6 +748,8 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		$FanoutTimelineEndpointService,
 		$ChannelFollowingService,
 		$RegistryApiService,
+		$ReversiService,
+
 		$FederationChart,
 		$NotesChart,
 		$UsersChart,
@@ -739,6 +763,7 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		$PerUserDriveChart,
 		$ApRequestChart,
 		$ChartManagementService,
+
 		$AbuseUserReportEntityService,
 		$AntennaEntityService,
 		$AppEntityService,
@@ -771,6 +796,8 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		$FlashEntityService,
 		$FlashLikeEntityService,
 		$RoleEntityService,
+		$ReversiGameEntityService,
+
 		$ApAudienceService,
 		$ApDbResolverService,
 		$ApDeliverManagerService,
diff --git a/packages/backend/src/core/EmailService.ts b/packages/backend/src/core/EmailService.ts
index 7e812b4df2..8daee148eb 100644
--- a/packages/backend/src/core/EmailService.ts
+++ b/packages/backend/src/core/EmailService.ts
@@ -165,10 +165,17 @@ export class EmailService {
 			email: emailAddress,
 		});
 
+		if (exist !== 0) {
+			return {
+				available: false,
+				reason: 'used',
+			};
+		}
+
 		let validated: {
 			valid: boolean,
 			reason?: string | null,
-		};
+		} = { valid: true, reason: null };
 
 		if (meta.enableActiveEmailValidation) {
 			if (meta.enableVerifymailApi && meta.verifymailAuthKey != null) {
@@ -185,27 +192,37 @@ export class EmailService {
 					validateSMTP: false, // 日本だと25ポートが殆どのプロバイダーで塞がれていてタイムアウトになるので
 				});
 			}
-		} else {
-			validated = { valid: true, reason: null };
+		}
+
+		if (!validated.valid) {
+			const formatReason: Record<string, 'format' | 'disposable' | 'mx' | 'smtp' | 'network' | 'blacklist' | undefined> = {
+				regex: 'format',
+				disposable: 'disposable',
+				mx: 'mx',
+				smtp: 'smtp',
+				network: 'network',
+				blacklist: 'blacklist',
+			};
+
+			return {
+				available: false,
+				reason: validated.reason ? formatReason[validated.reason] ?? null : null,
+			};
 		}
 
 		const emailDomain: string = emailAddress.split('@')[1];
 		const isBanned = this.utilityService.isBlockedHost(meta.bannedEmailDomains, emailDomain);
 
-		const available = exist === 0 && validated.valid && !isBanned;
+		if (isBanned) {
+			return {
+				available: false,
+				reason: 'banned',
+			};
+		}
 
 		return {
-			available,
-			reason: available ? null :
-			exist !== 0 ? 'used' :
-			isBanned ? 'banned' :
-			validated.reason === 'regex' ? 'format' :
-			validated.reason === 'disposable' ? 'disposable' :
-			validated.reason === 'mx' ? 'mx' :
-			validated.reason === 'smtp' ? 'smtp' :
-			validated.reason === 'network' ? 'network' :
-			validated.reason === 'blacklist' ? 'blacklist' :
-			null,
+			available: true,
+			reason: null,
 		};
 	}
 
@@ -222,7 +239,8 @@ export class EmailService {
 			},
 		});
 
-		const json = (await res.json()) as {
+		const json = (await res.json()) as Partial<{
+			message: string;
 			block: boolean;
 			catch_all: boolean;
 			deliverable_email: boolean;
@@ -237,8 +255,15 @@ export class EmailService {
 			mx_priority: { [key: string]: number };
 			privacy: boolean;
 			related_domains: string[];
-		};
+		}>;
 
+		/* api error: when there is only one `message` attribute in the returned result */
+		if (Object.keys(json).length === 1 && Reflect.has(json, 'message')) {
+			return {
+				valid: false,
+				reason: null,
+			};
+		}
 		if (json.email_address === undefined) {
 			return {
 				valid: false,
@@ -281,25 +306,26 @@ export class EmailService {
 				headers: {
 					'Content-Type': 'application/json',
 					Accept: 'application/json',
-					Authorization: truemailAuthKey
+					Authorization: truemailAuthKey,
 				},
 			});
-			
+
 			const json = (await res.json()) as {
 				email: string;
 				success: boolean;
-				errors?: { 
+				error?: string;
+				errors?: {
 					list_match?: string;
 					regex?: string;
 					mx?: string;
 					smtp?: string;
 				} | null;
 			};
-			
-			if (json.email === undefined || (json.email !== undefined && json.errors?.regex)) {
+
+			if (json.email === undefined || json.errors?.regex) {
 				return {
-						valid: false,
-						reason: 'format',
+					valid: false,
+					reason: 'format',
 				};
 			}
 			if (json.errors?.smtp) {
@@ -320,7 +346,7 @@ export class EmailService {
 					reason: json.errors?.list_match as T || 'blacklist',
 				};
 			}
-			
+
 			return {
 				valid: true,
 				reason: null,
diff --git a/packages/backend/src/core/GlobalEventService.ts b/packages/backend/src/core/GlobalEventService.ts
index 95a4eba742..dbbe5ecdc0 100644
--- a/packages/backend/src/core/GlobalEventService.ts
+++ b/packages/backend/src/core/GlobalEventService.ts
@@ -5,6 +5,7 @@
 
 import { Inject, Injectable } from '@nestjs/common';
 import * as Redis from 'ioredis';
+import * as Reversi from 'misskey-reversi';
 import type { MiChannel } from '@/models/Channel.js';
 import type { MiUser } from '@/models/User.js';
 import type { MiUserProfile } from '@/models/UserProfile.js';
@@ -18,7 +19,7 @@ import type { MiSignin } from '@/models/Signin.js';
 import type { MiPage } from '@/models/Page.js';
 import type { MiWebhook } from '@/models/Webhook.js';
 import type { MiMeta } from '@/models/Meta.js';
-import { MiAvatarDecoration, MiRole, MiRoleAssignment } from '@/models/_.js';
+import { MiAvatarDecoration, MiReversiGame, MiRole, MiRoleAssignment } from '@/models/_.js';
 import type { Packed } from '@/misc/json-schema.js';
 import { DI } from '@/di-symbols.js';
 import type { Config } from '@/config.js';
@@ -162,6 +163,38 @@ export interface AdminEventTypes {
 		comment: string;
 	};
 }
+
+export interface ReversiEventTypes {
+	matched: {
+		game: Packed<'ReversiGameDetailed'>;
+	};
+	invited: {
+		user: Packed<'User'>;
+	};
+}
+
+export interface ReversiGameEventTypes {
+	changeReadyStates: {
+		user1: boolean;
+		user2: boolean;
+	};
+	updateSettings: {
+		userId: MiUser['id'];
+		key: string;
+		value: any;
+	};
+	log: Reversi.Serializer.Log & { id: string | null };
+	started: {
+		game: Packed<'ReversiGameDetailed'>;
+	};
+	ended: {
+		winnerId: MiUser['id'] | null;
+		game: Packed<'ReversiGameDetailed'>;
+	};
+	canceled: {
+		userId: MiUser['id'];
+	};
+}
 //#endregion
 
 // 辞書(interface or type)から{ type, body }ユニオンを定義
@@ -252,6 +285,14 @@ export type GlobalEvents = {
 		name: 'notesStream';
 		payload: Serialized<Packed<'Note'>>;
 	};
+	reversi: {
+		name: `reversiStream:${MiUser['id']}`;
+		payload: EventUnionFromDictionary<SerializedAll<ReversiEventTypes>>;
+	};
+	reversiGame: {
+		name: `reversiGameStream:${MiReversiGame['id']}`;
+		payload: EventUnionFromDictionary<SerializedAll<ReversiGameEventTypes>>;
+	};
 };
 
 // API event definitions
@@ -341,4 +382,14 @@ export class GlobalEventService {
 	public publishAdminStream<K extends keyof AdminEventTypes>(userId: MiUser['id'], type: K, value?: AdminEventTypes[K]): void {
 		this.publish(`adminStream:${userId}`, type, typeof value === 'undefined' ? null : value);
 	}
+
+	@bindThis
+	public publishReversiStream<K extends keyof ReversiEventTypes>(userId: MiUser['id'], type: K, value?: ReversiEventTypes[K]): void {
+		this.publish(`reversiStream:${userId}`, type, typeof value === 'undefined' ? null : value);
+	}
+
+	@bindThis
+	public publishReversiGameStream<K extends keyof ReversiGameEventTypes>(gameId: MiReversiGame['id'], type: K, value?: ReversiGameEventTypes[K]): void {
+		this.publish(`reversiGameStream:${gameId}`, type, typeof value === 'undefined' ? null : value);
+	}
 }
diff --git a/packages/backend/src/core/ReversiService.ts b/packages/backend/src/core/ReversiService.ts
new file mode 100644
index 0000000000..f97f71eb43
--- /dev/null
+++ b/packages/backend/src/core/ReversiService.ts
@@ -0,0 +1,578 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and other misskey contributors
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { Inject, Injectable } from '@nestjs/common';
+import * as Redis from 'ioredis';
+import CRC32 from 'crc-32';
+import { ModuleRef } from '@nestjs/core';
+import * as Reversi from 'misskey-reversi';
+import { IsNull } from 'typeorm';
+import type {
+	MiReversiGame,
+	ReversiGamesRepository,
+	UsersRepository,
+} from '@/models/_.js';
+import type { MiUser } from '@/models/User.js';
+import { DI } from '@/di-symbols.js';
+import { bindThis } from '@/decorators.js';
+import { MetaService } from '@/core/MetaService.js';
+import { CacheService } from '@/core/CacheService.js';
+import { UserEntityService } from '@/core/entities/UserEntityService.js';
+import type { GlobalEvents } from '@/core/GlobalEventService.js';
+import { GlobalEventService } from '@/core/GlobalEventService.js';
+import { IdService } from '@/core/IdService.js';
+import type { Packed } from '@/misc/json-schema.js';
+import { NotificationService } from '@/core/NotificationService.js';
+import { Serialized } from '@/types.js';
+import { ReversiGameEntityService } from './entities/ReversiGameEntityService.js';
+import type { OnApplicationShutdown, OnModuleInit } from '@nestjs/common';
+
+const MATCHING_TIMEOUT_MS = 1000 * 15; // 15sec
+
+@Injectable()
+export class ReversiService implements OnApplicationShutdown, OnModuleInit {
+	private notificationService: NotificationService;
+
+	constructor(
+		private moduleRef: ModuleRef,
+
+		@Inject(DI.redis)
+		private redisClient: Redis.Redis,
+
+		@Inject(DI.reversiGamesRepository)
+		private reversiGamesRepository: ReversiGamesRepository,
+
+		private cacheService: CacheService,
+		private userEntityService: UserEntityService,
+		private globalEventService: GlobalEventService,
+		private reversiGameEntityService: ReversiGameEntityService,
+		private idService: IdService,
+	) {
+	}
+
+	async onModuleInit() {
+		this.notificationService = this.moduleRef.get(NotificationService.name);
+	}
+
+	@bindThis
+	private async cacheGame(game: MiReversiGame) {
+		await this.redisClient.setex(`reversi:game:cache:${game.id}`, 60 * 3, JSON.stringify(game));
+	}
+
+	@bindThis
+	private async deleteGameCache(gameId: MiReversiGame['id']) {
+		await this.redisClient.del(`reversi:game:cache:${gameId}`);
+	}
+
+	@bindThis
+	public async matchSpecificUser(me: MiUser, targetUser: MiUser): Promise<MiReversiGame | null> {
+		if (targetUser.id === me.id) {
+			throw new Error('You cannot match yourself.');
+		}
+
+		const invitations = await this.redisClient.zrange(
+			`reversi:matchSpecific:${me.id}`,
+			Date.now() - MATCHING_TIMEOUT_MS,
+			'+inf',
+			'BYSCORE');
+
+		if (invitations.includes(targetUser.id)) {
+			await this.redisClient.zrem(`reversi:matchSpecific:${me.id}`, targetUser.id);
+
+			const game = await this.reversiGamesRepository.insert({
+				id: this.idService.gen(),
+				user1Id: targetUser.id,
+				user2Id: me.id,
+				user1Ready: false,
+				user2Ready: false,
+				isStarted: false,
+				isEnded: false,
+				logs: [],
+				map: Reversi.maps.eighteight.data,
+				bw: 'random',
+				isLlotheo: false,
+			}).then(x => this.reversiGamesRepository.findOneByOrFail(x.identifiers[0]));
+			this.cacheGame(game);
+
+			const packed = await this.reversiGameEntityService.packDetail(game, { id: targetUser.id });
+			this.globalEventService.publishReversiStream(targetUser.id, 'matched', { game: packed });
+
+			return game;
+		} else {
+			this.redisClient.zadd(`reversi:matchSpecific:${targetUser.id}`, Date.now(), me.id);
+
+			this.globalEventService.publishReversiStream(targetUser.id, 'invited', {
+				user: await this.userEntityService.pack(me, targetUser),
+			});
+
+			return null;
+		}
+	}
+
+	@bindThis
+	public async matchAnyUser(me: MiUser): Promise<MiReversiGame | null> {
+		//#region まず自分宛ての招待を探す
+		const invitations = await this.redisClient.zrange(
+			`reversi:matchSpecific:${me.id}`,
+			Date.now() - MATCHING_TIMEOUT_MS,
+			'+inf',
+			'BYSCORE');
+
+		if (invitations.length > 0) {
+			const invitorId = invitations[Math.floor(Math.random() * invitations.length)];
+			await this.redisClient.zrem(`reversi:matchSpecific:${me.id}`, invitorId);
+
+			const game = await this.reversiGamesRepository.insert({
+				id: this.idService.gen(),
+				user1Id: invitorId,
+				user2Id: me.id,
+				user1Ready: false,
+				user2Ready: false,
+				isStarted: false,
+				isEnded: false,
+				logs: [],
+				map: Reversi.maps.eighteight.data,
+				bw: 'random',
+				isLlotheo: false,
+			}).then(x => this.reversiGamesRepository.findOneByOrFail(x.identifiers[0]));
+			this.cacheGame(game);
+
+			const packed = await this.reversiGameEntityService.packDetail(game, { id: invitorId });
+			this.globalEventService.publishReversiStream(invitorId, 'matched', { game: packed });
+
+			return game;
+		}
+		//#endregion
+
+		const matchings = await this.redisClient.zrange(
+			'reversi:matchAny',
+			Date.now() - MATCHING_TIMEOUT_MS,
+			'+inf',
+			'BYSCORE');
+
+		const userIds = matchings.filter(id => id !== me.id);
+
+		if (userIds.length > 0) {
+			// pick random
+			const matchedUserId = userIds[Math.floor(Math.random() * userIds.length)];
+
+			await this.redisClient.zrem('reversi:matchAny', me.id, matchedUserId);
+
+			const game = await this.reversiGamesRepository.insert({
+				id: this.idService.gen(),
+				user1Id: matchedUserId,
+				user2Id: me.id,
+				user1Ready: false,
+				user2Ready: false,
+				isStarted: false,
+				isEnded: false,
+				logs: [],
+				map: Reversi.maps.eighteight.data,
+				bw: 'random',
+				isLlotheo: false,
+			}).then(x => this.reversiGamesRepository.findOneByOrFail(x.identifiers[0]));
+			this.cacheGame(game);
+
+			const packed = await this.reversiGameEntityService.packDetail(game, { id: matchedUserId });
+			this.globalEventService.publishReversiStream(matchedUserId, 'matched', { game: packed });
+
+			return game;
+		} else {
+			await this.redisClient.zadd('reversi:matchAny', Date.now(), me.id);
+			return null;
+		}
+	}
+
+	@bindThis
+	public async matchSpecificUserCancel(user: MiUser, targetUserId: MiUser['id']) {
+		await this.redisClient.zrem(`reversi:matchSpecific:${targetUserId}`, user.id);
+	}
+
+	@bindThis
+	public async matchAnyUserCancel(user: MiUser) {
+		await this.redisClient.zrem('reversi:matchAny', user.id);
+	}
+
+	@bindThis
+	public async gameReady(gameId: MiReversiGame['id'], user: MiUser, ready: boolean) {
+		const game = await this.get(gameId);
+		if (game == null) throw new Error('game not found');
+		if (game.isStarted) return;
+
+		let isBothReady = false;
+
+		if (game.user1Id === user.id) {
+			const updatedGame = await this.reversiGamesRepository.createQueryBuilder().update()
+				.set({
+					user1Ready: ready,
+				})
+				.where('id = :id', { id: game.id })
+				.returning('*')
+				.execute()
+				.then((response) => response.raw[0]);
+			this.cacheGame(updatedGame);
+
+			this.globalEventService.publishReversiGameStream(game.id, 'changeReadyStates', {
+				user1: ready,
+				user2: updatedGame.user2Ready,
+			});
+
+			if (ready && updatedGame.user2Ready) isBothReady = true;
+		} else if (game.user2Id === user.id) {
+			const updatedGame = await this.reversiGamesRepository.createQueryBuilder().update()
+				.set({
+					user2Ready: ready,
+				})
+				.where('id = :id', { id: game.id })
+				.returning('*')
+				.execute()
+				.then((response) => response.raw[0]);
+			this.cacheGame(updatedGame);
+
+			this.globalEventService.publishReversiGameStream(game.id, 'changeReadyStates', {
+				user1: updatedGame.user1Ready,
+				user2: ready,
+			});
+
+			if (ready && updatedGame.user1Ready) isBothReady = true;
+		} else {
+			return;
+		}
+
+		if (isBothReady) {
+			// 3秒後、両者readyならゲーム開始
+			setTimeout(async () => {
+				const freshGame = await this.get(game.id);
+				if (freshGame == null || freshGame.isStarted || freshGame.isEnded) return;
+				if (!freshGame.user1Ready || !freshGame.user2Ready) return;
+
+				this.startGame(freshGame);
+			}, 3000);
+		}
+	}
+
+	@bindThis
+	private async startGame(game: MiReversiGame) {
+		let bw: number;
+		if (game.bw === 'random') {
+			bw = Math.random() > 0.5 ? 1 : 2;
+		} else {
+			bw = parseInt(game.bw, 10);
+		}
+
+		function getRandomMap() {
+			const mapCount = Object.entries(Reversi.maps).length;
+			const rnd = Math.floor(Math.random() * mapCount);
+			return Object.values(Reversi.maps)[rnd].data;
+		}
+
+		const map = game.map != null ? game.map : getRandomMap();
+
+		const crc32 = CRC32.str(JSON.stringify(game.logs)).toString();
+
+		const updatedGame = await this.reversiGamesRepository.createQueryBuilder().update()
+			.set({
+				startedAt: new Date(),
+				isStarted: true,
+				black: bw,
+				map: map,
+				crc32,
+			})
+			.where('id = :id', { id: game.id })
+			.returning('*')
+			.execute()
+			.then((response) => response.raw[0]);
+		this.cacheGame(updatedGame);
+
+		//#region 盤面に最初から石がないなどして始まった瞬間に勝敗が決定する場合があるのでその処理
+		const engine = new Reversi.Game(map, {
+			isLlotheo: game.isLlotheo,
+			canPutEverywhere: game.canPutEverywhere,
+			loopedBoard: game.loopedBoard,
+		});
+
+		if (engine.isEnded) {
+			let winner;
+			if (engine.winner === true) {
+				winner = bw === 1 ? game.user1Id : game.user2Id;
+			} else if (engine.winner === false) {
+				winner = bw === 1 ? game.user2Id : game.user1Id;
+			} else {
+				winner = null;
+			}
+
+			const updatedGame = await this.reversiGamesRepository.createQueryBuilder().update()
+				.set({
+					isEnded: true,
+					endedAt: new Date(),
+					winnerId: winner,
+				})
+				.where('id = :id', { id: game.id })
+				.returning('*')
+				.execute()
+				.then((response) => response.raw[0]);
+			this.cacheGame(updatedGame);
+
+			this.globalEventService.publishReversiGameStream(game.id, 'ended', {
+				winnerId: winner,
+				game: await this.reversiGameEntityService.packDetail(game.id),
+			});
+
+			return;
+		}
+		//#endregion
+
+		this.redisClient.setex(`reversi:game:turnTimer:${game.id}:1`, updatedGame.timeLimitForEachTurn, '');
+
+		this.globalEventService.publishReversiGameStream(game.id, 'started', {
+			game: await this.reversiGameEntityService.packDetail(game.id),
+		});
+	}
+
+	@bindThis
+	public async getInvitations(user: MiUser): Promise<MiUser['id'][]> {
+		const invitations = await this.redisClient.zrange(
+			`reversi:matchSpecific:${user.id}`,
+			Date.now() - MATCHING_TIMEOUT_MS,
+			'+inf',
+			'BYSCORE');
+		return invitations;
+	}
+
+	@bindThis
+	public async updateSettings(gameId: MiReversiGame['id'], user: MiUser, key: string, value: any) {
+		const game = await this.get(gameId);
+		if (game == null) throw new Error('game not found');
+		if (game.isStarted) return;
+		if ((game.user1Id !== user.id) && (game.user2Id !== user.id)) return;
+		if ((game.user1Id === user.id) && game.user1Ready) return;
+		if ((game.user2Id === user.id) && game.user2Ready) return;
+
+		if (!['map', 'bw', 'isLlotheo', 'canPutEverywhere', 'loopedBoard', 'timeLimitForEachTurn'].includes(key)) return;
+
+		// TODO: より厳格なバリデーション
+
+		const updatedGame = await this.reversiGamesRepository.createQueryBuilder().update()
+			.set({
+				[key]: value,
+			})
+			.where('id = :id', { id: game.id })
+			.returning('*')
+			.execute()
+			.then((response) => response.raw[0]);
+		this.cacheGame(updatedGame);
+
+		this.globalEventService.publishReversiGameStream(game.id, 'updateSettings', {
+			userId: user.id,
+			key: key,
+			value: value,
+		});
+	}
+
+	@bindThis
+	public async putStoneToGame(gameId: MiReversiGame['id'], user: MiUser, pos: number, id?: string | null) {
+		const game = await this.get(gameId);
+		if (game == null) throw new Error('game not found');
+		if (!game.isStarted) return;
+		if (game.isEnded) return;
+		if ((game.user1Id !== user.id) && (game.user2Id !== user.id)) return;
+
+		const myColor =
+			((game.user1Id === user.id) && game.black === 1) || ((game.user2Id === user.id) && game.black === 2)
+				? true
+				: false;
+
+		const engine = Reversi.Serializer.restoreGame({
+			map: game.map,
+			isLlotheo: game.isLlotheo,
+			canPutEverywhere: game.canPutEverywhere,
+			loopedBoard: game.loopedBoard,
+			logs: game.logs,
+		});
+
+		if (engine.turn !== myColor) return;
+		if (!engine.canPut(myColor, pos)) return;
+
+		engine.putStone(pos);
+
+		let winner;
+		if (engine.isEnded) {
+			if (engine.winner === true) {
+				winner = game.black === 1 ? game.user1Id : game.user2Id;
+			} else if (engine.winner === false) {
+				winner = game.black === 1 ? game.user2Id : game.user1Id;
+			} else {
+				winner = null;
+			}
+		}
+
+		const logs = Reversi.Serializer.deserializeLogs(game.logs);
+
+		const log = {
+			time: Date.now(),
+			player: myColor,
+			operation: 'put',
+			pos,
+		} as const;
+
+		logs.push(log);
+
+		const serializeLogs = Reversi.Serializer.serializeLogs(logs);
+
+		const crc32 = CRC32.str(JSON.stringify(serializeLogs)).toString();
+
+		const updatedGame = await this.reversiGamesRepository.createQueryBuilder().update()
+			.set({
+				crc32,
+				isEnded: engine.isEnded,
+				winnerId: winner,
+				logs: serializeLogs,
+			})
+			.where('id = :id', { id: game.id })
+			.returning('*')
+			.execute()
+			.then((response) => response.raw[0]);
+		this.cacheGame(updatedGame);
+
+		this.globalEventService.publishReversiGameStream(game.id, 'log', {
+			...log,
+			id: id ?? null,
+		});
+
+		if (engine.isEnded) {
+			this.globalEventService.publishReversiGameStream(game.id, 'ended', {
+				winnerId: winner ?? null,
+				game: await this.reversiGameEntityService.packDetail(game.id),
+			});
+		} else {
+			this.redisClient.setex(`reversi:game:turnTimer:${game.id}:${engine.turn ? '1' : '0'}`, updatedGame.timeLimitForEachTurn, '');
+		}
+	}
+
+	@bindThis
+	public async surrender(gameId: MiReversiGame['id'], user: MiUser) {
+		const game = await this.get(gameId);
+		if (game == null) throw new Error('game not found');
+		if (game.isEnded) return;
+		if ((game.user1Id !== user.id) && (game.user2Id !== user.id)) return;
+
+		const winnerId = game.user1Id === user.id ? game.user2Id : game.user1Id;
+
+		const updatedGame = await this.reversiGamesRepository.createQueryBuilder().update()
+			.set({
+				isEnded: true,
+				endedAt: new Date(),
+				winnerId: winnerId,
+				surrenderedUserId: user.id,
+			})
+			.where('id = :id', { id: game.id })
+			.returning('*')
+			.execute()
+			.then((response) => response.raw[0]);
+		this.cacheGame(updatedGame);
+
+		this.globalEventService.publishReversiGameStream(game.id, 'ended', {
+			winnerId: winnerId,
+			game: await this.reversiGameEntityService.packDetail(game.id),
+		});
+	}
+
+	@bindThis
+	public async checkTimeout(gameId: MiReversiGame['id']) {
+		const game = await this.get(gameId);
+		if (game == null) throw new Error('game not found');
+		if (game.isEnded) return;
+
+		const engine = Reversi.Serializer.restoreGame({
+			map: game.map,
+			isLlotheo: game.isLlotheo,
+			canPutEverywhere: game.canPutEverywhere,
+			loopedBoard: game.loopedBoard,
+			logs: game.logs,
+		});
+
+		if (engine.turn == null) return;
+
+		const timer = await this.redisClient.exists(`reversi:game:turnTimer:${game.id}:${engine.turn ? '1' : '0'}`);
+
+		if (timer === 0) {
+			const winnerId = engine.turn ? (game.black === 1 ? game.user2Id : game.user1Id) : (game.black === 1 ? game.user1Id : game.user2Id);
+
+			const updatedGame = await this.reversiGamesRepository.createQueryBuilder().update()
+				.set({
+					isEnded: true,
+					endedAt: new Date(),
+					winnerId: winnerId,
+					timeoutUserId: engine.turn ? (game.black === 1 ? game.user1Id : game.user2Id) : (game.black === 1 ? game.user2Id : game.user1Id),
+				})
+				.where('id = :id', { id: game.id })
+				.returning('*')
+				.execute()
+				.then((response) => response.raw[0]);
+			this.cacheGame(updatedGame);
+
+			this.globalEventService.publishReversiGameStream(game.id, 'ended', {
+				winnerId: winnerId,
+				game: await this.reversiGameEntityService.packDetail(game.id),
+			});
+		}
+	}
+
+	@bindThis
+	public async cancelGame(gameId: MiReversiGame['id'], user: MiUser) {
+		const game = await this.get(gameId);
+		if (game == null) throw new Error('game not found');
+		if (game.isStarted) return;
+		if ((game.user1Id !== user.id) && (game.user2Id !== user.id)) return;
+
+		await this.reversiGamesRepository.delete(game.id);
+		this.deleteGameCache(game.id);
+
+		this.globalEventService.publishReversiGameStream(game.id, 'canceled', {
+			userId: user.id,
+		});
+	}
+
+	@bindThis
+	public async get(id: MiReversiGame['id']): Promise<MiReversiGame | null> {
+		const cached = await this.redisClient.get(`reversi:game:cache:${id}`);
+		if (cached != null) {
+			const parsed = JSON.parse(cached) as Serialized<MiReversiGame>;
+			return {
+				...parsed,
+				startedAt: parsed.startedAt != null ? new Date(parsed.startedAt) : null,
+				endedAt: parsed.endedAt != null ? new Date(parsed.endedAt) : null,
+			};
+		} else {
+			const game = await this.reversiGamesRepository.findOneBy({ id });
+			if (game == null) return null;
+
+			this.cacheGame(game);
+
+			return game;
+		}
+	}
+
+	@bindThis
+	public async checkCrc(gameId: MiReversiGame['id'], crc32: string | number) {
+		const game = await this.get(gameId);
+		if (game == null) throw new Error('game not found');
+
+		if (crc32.toString() !== game.crc32) {
+			return await this.reversiGameEntityService.packDetail(game);
+		} else {
+			return null;
+		}
+	}
+
+	@bindThis
+	public dispose(): void {
+	}
+
+	@bindThis
+	public onApplicationShutdown(signal?: string | undefined): void {
+		this.dispose();
+	}
+}
diff --git a/packages/backend/src/core/activitypub/ApAudienceService.ts b/packages/backend/src/core/activitypub/ApAudienceService.ts
index 440852bdf3..11fc82e8bc 100644
--- a/packages/backend/src/core/activitypub/ApAudienceService.ts
+++ b/packages/backend/src/core/activitypub/ApAudienceService.ts
@@ -58,7 +58,7 @@ export class ApAudienceService {
 			};
 		}
 
-		if (toGroups.followers.length > 0) {
+		if (toGroups.followers.length > 0 || ccGroups.followers.length > 0) {
 			return {
 				visibility: 'followers',
 				mentionedUsers,
diff --git a/packages/backend/src/core/entities/ReversiGameEntityService.ts b/packages/backend/src/core/entities/ReversiGameEntityService.ts
new file mode 100644
index 0000000000..bcb0fd5a6f
--- /dev/null
+++ b/packages/backend/src/core/entities/ReversiGameEntityService.ts
@@ -0,0 +1,117 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and other misskey contributors
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { Inject, Injectable } from '@nestjs/common';
+import { DI } from '@/di-symbols.js';
+import type { ReversiGamesRepository } from '@/models/_.js';
+import { awaitAll } from '@/misc/prelude/await-all.js';
+import type { Packed } from '@/misc/json-schema.js';
+import type { } from '@/models/Blocking.js';
+import type { MiUser } from '@/models/User.js';
+import type { MiReversiGame } from '@/models/ReversiGame.js';
+import { bindThis } from '@/decorators.js';
+import { IdService } from '@/core/IdService.js';
+import { UserEntityService } from './UserEntityService.js';
+
+@Injectable()
+export class ReversiGameEntityService {
+	constructor(
+		@Inject(DI.reversiGamesRepository)
+		private reversiGamesRepository: ReversiGamesRepository,
+
+		private userEntityService: UserEntityService,
+		private idService: IdService,
+	) {
+	}
+
+	@bindThis
+	public async packDetail(
+		src: MiReversiGame['id'] | MiReversiGame,
+		me?: { id: MiUser['id'] } | null | undefined,
+	): Promise<Packed<'ReversiGameDetailed'>> {
+		const game = typeof src === 'object' ? src : await this.reversiGamesRepository.findOneByOrFail({ id: src });
+
+		return await awaitAll({
+			id: game.id,
+			createdAt: this.idService.parse(game.id).date.toISOString(),
+			startedAt: game.startedAt && game.startedAt.toISOString(),
+			endedAt: game.endedAt && game.endedAt.toISOString(),
+			isStarted: game.isStarted,
+			isEnded: game.isEnded,
+			form1: game.form1,
+			form2: game.form2,
+			user1Ready: game.user1Ready,
+			user2Ready: game.user2Ready,
+			user1Id: game.user1Id,
+			user2Id: game.user2Id,
+			user1: this.userEntityService.pack(game.user1Id, me),
+			user2: this.userEntityService.pack(game.user2Id, me),
+			winnerId: game.winnerId,
+			winner: game.winnerId ? this.userEntityService.pack(game.winnerId, me) : null,
+			surrenderedUserId: game.surrenderedUserId,
+			timeoutUserId: game.timeoutUserId,
+			black: game.black,
+			bw: game.bw,
+			isLlotheo: game.isLlotheo,
+			canPutEverywhere: game.canPutEverywhere,
+			loopedBoard: game.loopedBoard,
+			timeLimitForEachTurn: game.timeLimitForEachTurn,
+			logs: game.logs,
+			map: game.map,
+		});
+	}
+
+	@bindThis
+	public packDetailMany(
+		xs: MiReversiGame[],
+		me?: { id: MiUser['id'] } | null | undefined,
+	) {
+		return Promise.all(xs.map(x => this.packDetail(x, me)));
+	}
+
+	@bindThis
+	public async packLite(
+		src: MiReversiGame['id'] | MiReversiGame,
+		me?: { id: MiUser['id'] } | null | undefined,
+	): Promise<Packed<'ReversiGameLite'>> {
+		const game = typeof src === 'object' ? src : await this.reversiGamesRepository.findOneByOrFail({ id: src });
+
+		return await awaitAll({
+			id: game.id,
+			createdAt: this.idService.parse(game.id).date.toISOString(),
+			startedAt: game.startedAt && game.startedAt.toISOString(),
+			endedAt: game.endedAt && game.endedAt.toISOString(),
+			isStarted: game.isStarted,
+			isEnded: game.isEnded,
+			form1: game.form1,
+			form2: game.form2,
+			user1Ready: game.user1Ready,
+			user2Ready: game.user2Ready,
+			user1Id: game.user1Id,
+			user2Id: game.user2Id,
+			user1: this.userEntityService.pack(game.user1Id, me),
+			user2: this.userEntityService.pack(game.user2Id, me),
+			winnerId: game.winnerId,
+			winner: game.winnerId ? this.userEntityService.pack(game.winnerId, me) : null,
+			surrenderedUserId: game.surrenderedUserId,
+			timeoutUserId: game.timeoutUserId,
+			black: game.black,
+			bw: game.bw,
+			isLlotheo: game.isLlotheo,
+			canPutEverywhere: game.canPutEverywhere,
+			loopedBoard: game.loopedBoard,
+			timeLimitForEachTurn: game.timeLimitForEachTurn,
+		});
+	}
+
+	@bindThis
+	public packLiteMany(
+		xs: MiReversiGame[],
+		me?: { id: MiUser['id'] } | null | undefined,
+	) {
+		return Promise.all(xs.map(x => this.packLite(x, me)));
+	}
+}
+