From 2f99c7e9dc2e5e3ca06c9672a6ab4887eb094310 Mon Sep 17 00:00:00 2001
From: Mar0xy <marie@kaifa.ch>
Date: Mon, 4 Dec 2023 02:10:51 +0100
Subject: add: Bubble timeline

Closes  transfem-org/Sharkey#154
---
 .../server/api/endpoints/notes/bubble-timeline.ts  | 130 +++++++++++++++++++++
 1 file changed, 130 insertions(+)
 create mode 100644 packages/backend/src/server/api/endpoints/notes/bubble-timeline.ts

(limited to 'packages/backend/src/server/api/endpoints/notes')

diff --git a/packages/backend/src/server/api/endpoints/notes/bubble-timeline.ts b/packages/backend/src/server/api/endpoints/notes/bubble-timeline.ts
new file mode 100644
index 0000000000..0652c82a9d
--- /dev/null
+++ b/packages/backend/src/server/api/endpoints/notes/bubble-timeline.ts
@@ -0,0 +1,130 @@
+import { Inject, Injectable } from '@nestjs/common';
+import { Brackets } from 'typeorm';
+import type { NotesRepository } from '@/models/_.js';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { QueryService } from '@/core/QueryService.js';
+import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
+import ActiveUsersChart from '@/core/chart/charts/active-users.js';
+import { DI } from '@/di-symbols.js';
+import { RoleService } from '@/core/RoleService.js';
+import { ApiError } from '../../error.js';
+import { CacheService } from '@/core/CacheService.js';
+import { MetaService } from '@/core/MetaService.js';
+
+export const meta = {
+	tags: ['notes'],
+
+	res: {
+		type: 'array',
+		optional: false, nullable: false,
+		items: {
+			type: 'object',
+			optional: false, nullable: false,
+			ref: 'Note',
+		},
+	},
+
+	errors: {
+		btlDisabled: {
+			message: 'Bubble timeline has been disabled.',
+			code: 'BTL_DISABLED',
+			id: '0332fc13-6ab2-4427-ae80-a9fadffd1a6c',
+		},
+	},
+} as const;
+
+export const paramDef = {
+	type: 'object',
+	properties: {
+		withFiles: { type: 'boolean', default: false },
+		withBots: { type: 'boolean', default: true },
+		withRenotes: { type: 'boolean', default: true },
+		limit: { type: 'integer', minimum: 1, maximum: 100, default: 10 },
+		sinceId: { type: 'string', format: 'misskey:id' },
+		untilId: { type: 'string', format: 'misskey:id' },
+		sinceDate: { type: 'integer' },
+		untilDate: { type: 'integer' },
+	},
+	required: [],
+} as const;
+
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-disable-line import/no-default-export
+	constructor(
+		@Inject(DI.notesRepository)
+		private notesRepository: NotesRepository,
+
+		private noteEntityService: NoteEntityService,
+		private queryService: QueryService,
+		private roleService: RoleService,
+		private activeUsersChart: ActiveUsersChart,
+		private cacheService: CacheService,
+		private metaService: MetaService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			const policies = await this.roleService.getUserPolicies(me ? me.id : null);
+			const instance = await this.metaService.fetch();
+			if (!policies.btlAvailable) {
+				throw new ApiError(meta.errors.btlDisabled);
+			}
+
+			const [
+				followings,
+			] = me ? await Promise.all([
+				this.cacheService.userFollowingsCache.fetch(me.id),
+			]) : [undefined];
+
+			//#region Construct query
+			const query = this.queryService.makePaginationQuery(this.notesRepository.createQueryBuilder('note'),
+				ps.sinceId, ps.untilId, ps.sinceDate, ps.untilDate)
+				.andWhere('note.visibility = \'public\'')
+				.andWhere('note.channelId IS NULL')
+				.andWhere(
+					`(note.userHost = ANY ('{"${instance.bubbleInstances.join('","')}"}'))`,
+				)		
+				.innerJoinAndSelect('note.user', 'user')
+				.leftJoinAndSelect('note.reply', 'reply')
+				.leftJoinAndSelect('note.renote', 'renote')
+				.leftJoinAndSelect('reply.user', 'replyUser')
+				.leftJoinAndSelect('renote.user', 'renoteUser');
+
+			if (me) {
+				this.queryService.generateMutedUserQuery(query, me);
+				this.queryService.generateBlockedUserQuery(query, me);
+				this.queryService.generateMutedUserRenotesQueryForNotes(query, me);
+			}
+
+			if (ps.withFiles) {
+				query.andWhere('note.fileIds != \'{}\'');
+			}
+
+			if (!ps.withBots) query.andWhere('user.isBot = FALSE');
+			
+			if (ps.withRenotes === false) {
+				query.andWhere(new Brackets(qb => {
+					qb.where('note.renoteId IS NULL');
+					qb.orWhere(new Brackets(qb => {
+						qb.where('note.text IS NOT NULL');
+						qb.orWhere('note.fileIds != \'{}\'');
+					}));
+				}));
+			}
+			//#endregion
+
+			let timeline = await query.limit(ps.limit).getMany();
+
+			timeline = timeline.filter(note => {
+				if (note.user?.isSilenced && me && followings && note.userId !== me.id && !followings[note.userId]) return false;
+				return true;
+			});
+
+			process.nextTick(() => {
+				if (me) {
+					this.activeUsersChart.read(me);
+				}
+			});
+
+			return await this.noteEntityService.packMany(timeline, me);
+		});
+	}
+}
-- 
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