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path: root/packages/backend/src/server/api/stream/channels/main.ts
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/*
 * SPDX-FileCopyrightText: syuilo and misskey-project
 * SPDX-License-Identifier: AGPL-3.0-only
 */

import { Injectable } from '@nestjs/common';
import { isInstanceMuted, isUserFromMutedInstance } from '@/misc/is-instance-muted.js';
import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
import { bindThis } from '@/decorators.js';
import type { JsonObject } from '@/misc/json-value.js';
import Channel, { type MiChannelService } from '../channel.js';

class MainChannel extends Channel {
	public readonly chName = 'main';
	public static shouldShare = true;
	public static requireCredential = true as const;
	public static kind = 'read:account';

	constructor(
		noteEntityService: NoteEntityService,

		id: string,
		connection: Channel['connection'],
	) {
		super(id, connection, noteEntityService);
	}

	@bindThis
	public async init(params: JsonObject) {
		// Subscribe main stream channel
		this.subscriber.on(`mainStream:${this.user!.id}`, async data => {
			switch (data.type) {
				case 'notification': {
					// Ignore notifications from instances the user has muted
					if (isUserFromMutedInstance(data.body, this.userMutedInstances)) return;
					if (data.body.userId && this.userIdsWhoMeMuting.has(data.body.userId)) return;

					if (data.body.note && data.body.note.isHidden) {
						if (this.isNoteMutedOrBlocked(data.body.note)) return;
						if (!this.isNoteVisibleToMe(data.body.id)) return;
						const note = await this.noteEntityService.pack(data.body.note.id, this.user, {
							detail: true,
						});
						data.body.note = note;
					}
					break;
				}
				case 'mention': {
					if (this.isNoteMutedOrBlocked(data.body)) return;
					if (data.body.isHidden) {
						const note = await this.noteEntityService.pack(data.body.id, this.user, {
							detail: true,
						});
						data.body = note;
					}
					break;
				}
			}

			this.send(data.type, data.body);
		});
	}
}

@Injectable()
export class MainChannelService implements MiChannelService<true> {
	public readonly shouldShare = MainChannel.shouldShare;
	public readonly requireCredential = MainChannel.requireCredential;
	public readonly kind = MainChannel.kind;

	constructor(
		private noteEntityService: NoteEntityService,
	) {
	}

	@bindThis
	public create(id: string, connection: Channel['connection']): MainChannel {
		return new MainChannel(
			this.noteEntityService,
			id,
			connection,
		);
	}
}