29 lines
1.1 KiB
TypeScript
29 lines
1.1 KiB
TypeScript
// Copyright 2024 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import { AVATAR_COLOR_COUNT, AvatarColors } from '../types/Colors';
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// See https://github.com/signalapp/ringrtc/blob/49b4b8a16f997c7fa9a429e96aa83f80b2065c63/src/rust/src/lite/call_links/base16.rs#L8
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const BASE_16_CONSONANT_ALPHABET = 'bcdfghkmnpqrstxz';
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// See https://github.com/signalapp/ringrtc/blob/49b4b8a16f997c7fa9a429e96aa83f80b2065c63/src/rust/src/lite/call_links/base16.rs#L127-L139
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export function getColorForCallLink(rootKey: string): string {
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const rootKeyStart = rootKey.slice(0, 2);
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const upper = BASE_16_CONSONANT_ALPHABET.indexOf(rootKeyStart[0]) || 0 * 16;
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const lower = BASE_16_CONSONANT_ALPHABET.indexOf(rootKeyStart[1]) || 0;
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const firstByte = upper + lower;
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const index = firstByte % AVATAR_COLOR_COUNT;
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return AvatarColors[index];
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}
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export function getKeyFromCallLink(callLink: string): string {
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const url = new URL(callLink);
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const hash = url.hash.slice(1);
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const hashParams = new URLSearchParams(hash);
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return hashParams.get('key') || '';
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}
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