Exclude suspended users note from most timelines (#15775)

* feat: exclude notes by suspended user from FTT timeline endpoint

* feat: exclude notes by suspended user from DB based timelines

* chore: fix types

* chore: fix types

* chore: fix non-reply / renote

* chore: fix non-reply / renote

* test: update test

* docs(changelog): 凍結されたユーザのノートが各種タイムラインで表示されないように

* Exclude suspended users note from featured

* fix: join user

* Update CHANGELOG.md

---------

Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

3 files changed, 48 insertions, 1 deletions

diff --git a/packages/backend/src/core/FanoutTimelineEndpointService.ts b/packages/backend/src/core/FanoutTimelineEndpointService.ts
index 1ffeb4b3a4..6253f792ed 100644
--- a/packages/backend/src/core/FanoutTimelineEndpointService.ts
+++ b/packages/backend/src/core/FanoutTimelineEndpointService.ts
@@ -36,6 +36,7 @@ type TimelineOptions = {
 	excludeNoFiles?: boolean;
 	excludeReplies?: boolean;
 	excludePureRenotes: boolean;
+	ignoreAuthorFromUserSuspension?: boolean;
 	dbFallback: (untilId: string | null, sinceId: string | null, limit: number) => Promise<MiNote[]>,
 };
 
@@ -139,6 +140,23 @@ export class FanoutTimelineEndpointService {
 				};
 			}
 
+			{
+				const parentFilter = filter;
+				filter = (note) => {
+					const noteJoined = note as MiNote & {
+						renoteUser: MiUser | null;
+						replyUser: MiUser | null;
+					};
+					if (!ps.ignoreAuthorFromUserSuspension) {
+						if (note.user!.isSuspended) return false;
+					}
+					if (note.userId !== note.renoteUserId && noteJoined.renoteUser?.isSuspended) return false;
+					if (note.userId !== note.replyUserId && noteJoined.replyUser?.isSuspended) return false;
+
+					return parentFilter(note);
+				};
+			}
+
 			const redisTimeline: MiNote[] = [];
 			let readFromRedis = 0;
 			let lastSuccessfulRate = 1; // rateをキャッシュする？
diff --git a/packages/backend/src/core/QueryService.ts b/packages/backend/src/core/QueryService.ts
index 119eb49c02..e219efaf3d 100644
--- a/packages/backend/src/core/QueryService.ts
+++ b/packages/backend/src/core/QueryService.ts
@@ -287,4 +287,26 @@ export class QueryService {
 				.andWhere(instanceSuspension('renoteUser'));
 		}
 	}
+
+	// Requirements: user replyUser renoteUser must be joined
+	@bindThis
+	public generateSuspendedUserQueryForNote(q: SelectQueryBuilder<any>, excludeAuthor?: boolean): void {
+		if (excludeAuthor) {
+			const brakets = (user: string) => new Brackets(qb => qb
+				.where(`note.${user}Id IS NULL`)
+				.orWhere(`user.id = ${user}.id`)
+				.orWhere(`${user}.isSuspended = FALSE`));
+			q
+				.andWhere(brakets('replyUser'))
+				.andWhere(brakets('renoteUser'));
+		} else {
+			const brakets = (user: string) => new Brackets(qb => qb
+				.where(`note.${user}Id IS NULL`)
+				.orWhere(`${user}.isSuspended = FALSE`));
+			q
+				.andWhere('user.isSuspended = FALSE')
+				.andWhere(brakets('replyUser'))
+				.andWhere(brakets('renoteUser'));
+		}
+	}
 }
diff --git a/packages/backend/src/core/SearchService.ts b/packages/backend/src/core/SearchService.ts
index d94281920e..20a776ded8 100644
--- a/packages/backend/src/core/SearchService.ts
+++ b/packages/backend/src/core/SearchService.ts
@@ -235,6 +235,7 @@ export class SearchService {
 
 		this.queryService.generateVisibilityQuery(query, me);
 		this.queryService.generateBlockedHostQueryForNote(query);
+		this.queryService.generateSuspendedUserQueryForNote(query);
 		if (me) this.queryService.generateMutedUserQueryForNotes(query, me);
 		if (me) this.queryService.generateBlockedUserQueryForNotes(query, me);
 
@@ -297,11 +298,17 @@ export class SearchService {
 			])
 			: [new Set<string>(), new Set<string>()];
 
-		const query = this.notesRepository.createQueryBuilder('note');
+		const query = this.notesRepository.createQueryBuilder('note')
+			.innerJoinAndSelect('note.user', 'user')
+			.leftJoinAndSelect('note.reply', 'reply')
+			.leftJoinAndSelect('note.renote', 'renote')
+			.leftJoinAndSelect('reply.user', 'replyUser')
+			.leftJoinAndSelect('renote.user', 'renoteUser');
 
 		query.where('note.id IN (:...noteIds)', { noteIds: res.hits.map(x => x.id) });
 
 		this.queryService.generateBlockedHostQueryForNote(query);
+		this.queryService.generateSuspendedUserQueryForNote(query);
 
 		const notes = (await query.getMany()).filter(note => {
 			if (me && isUserRelated(note, userIdsWhoBlockingMe)) return false;