25 lines
834 B
TypeScript
25 lines
834 B
TypeScript
// Copyright 2021 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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/**
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* `SeenStatus` represents either the idea that a message doesn't need to track its seen
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* status, or the standard unseen/seen status pair.
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*
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* Unseen is a lot like unread - except that unseen messages only affect the placement
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* of the last seen indicator and the count it shows. Unread messages will affect the
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* left pane badging for conversations, as well as the overall badge count on the app.
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*/
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export enum SeenStatus {
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NotApplicable = 0,
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Unseen = 1,
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Seen = 2,
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}
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const STATUS_NUMBERS: Record<SeenStatus, number> = {
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[SeenStatus.NotApplicable]: 0,
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[SeenStatus.Unseen]: 1,
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[SeenStatus.Seen]: 2,
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};
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export const maxSeenStatus = (a: SeenStatus, b: SeenStatus): SeenStatus =>
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STATUS_NUMBERS[a] > STATUS_NUMBERS[b] ? a : b;
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