enhance: モデレーターがチャットルームの内容を確認・削除できるように

packages/backend/src/core/ChatService.ts

@@ -27,6 +27,7 @@ import { sqlLikeEscape } from '@/misc/sql-like-escape.js';
 import { CustomEmojiService } from '@/core/CustomEmojiService.js';
 import { emojiRegex } from '@/misc/emoji-regex.js';
 import { NotificationService } from '@/core/NotificationService.js';
+import { ModerationLogService } from '@/core/ModerationLogService.js';
 
 const MAX_ROOM_MEMBERS = 30;
 const MAX_REACTIONS_PER_MESSAGE = 100;
@@ -75,6 +76,7 @@ export class ChatService {
 		private roleService: RoleService,
 		private userFollowingService: UserFollowingService,
 		private customEmojiService: CustomEmojiService,
+		private moderationLogService: ModerationLogService,
 	) {
 	}
 
@@ -285,6 +287,20 @@ export class ChatService {
 		return this.chatMessagesRepository.findOneBy({ id: messageId, fromUserId: userId });
 	}
 
+	@bindThis
+	public async hasPermissionToViewRoomTimeline(meId: MiUser['id'], room: MiChatRoom) {
+		if (await this.isRoomMember(room, meId)) {
+			return true;
+		} else {
+			const iAmModerator = await this.roleService.isModerator({ id: meId });
+			if (iAmModerator) {
+				return true;
+			}
+
+			return false;
+		}
+	}
+
 	@bindThis
 	public async deleteMessage(message: MiChatMessage) {
 		await this.chatMessagesRepository.delete(message.id);
@@ -493,8 +509,29 @@ export class ChatService {
 	}
 
 	@bindThis
-	public async deleteRoom(room: MiChatRoom) {
+	public async hasPermissionToDeleteRoom(meId: MiUser['id'], room: MiChatRoom) {
+		if (room.ownerId === meId) {
+			return true;
+		}
+
+		const iAmModerator = await this.roleService.isModerator({ id: meId });
+		if (iAmModerator) {
+			return true;
+		}
+
+		return false;
+	}
+
+	@bindThis
+	public async deleteRoom(room: MiChatRoom, moderator?: MiUser) {
 		await this.chatRoomsRepository.delete(room.id);
+
+		if (moderator) {
+			this.moderationLogService.log(moderator, 'deleteChatRoom', {
+				roomId: room.id,
+				room: room,
+			});
+		}
 	}
 
 	@bindThis