48 lines
1.8 KiB
TypeScript
48 lines
1.8 KiB
TypeScript
/*
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* Copyright (C) 2026 Fluxer Contributors
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*
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* This file is part of Fluxer.
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*
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* Fluxer is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Fluxer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
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*/
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import {ChannelTypes} from '~/Constants';
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import type {ChannelRecord} from '~/records/ChannelRecord';
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import ChannelStore from '~/stores/ChannelStore';
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import * as SnowflakeUtils from '~/utils/SnowflakeUtils';
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export const MAX_GROUP_DM_RECIPIENTS = 10;
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const canonicalizeRecipientIds = (recipientIds: ReadonlyArray<string>): string => {
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const sortedRecipients = Array.from(new Set(recipientIds)).sort();
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return JSON.stringify(sortedRecipients);
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};
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export const getDuplicateGroupDMChannels = (
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recipientIds: ReadonlyArray<string>,
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excludeChannelId?: string,
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): Array<ChannelRecord> => {
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const key = canonicalizeRecipientIds(recipientIds);
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return ChannelStore.getPrivateChannels()
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.filter((channel) => channel.type === ChannelTypes.GROUP_DM && channel.recipientIds.length > 0)
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.filter((channel) => !excludeChannelId || channel.id !== excludeChannelId)
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.filter((channel) => canonicalizeRecipientIds(channel.recipientIds) === key)
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.sort((a, b) => {
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const aSnowflake = a.lastMessageId ?? a.id;
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const bSnowflake = b.lastMessageId ?? b.id;
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return SnowflakeUtils.compare(bSnowflake, aSnowflake);
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});
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};
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