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prepareDestination.ts
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prepareDestination.ts
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/*!
* Copyright 2023 WPPConnect Team
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { functions, multidevice, websocket, Wid } from '../../whatsapp';
export async function prepareDestionation(wids: Wid[]) {
const fanList = await functions.getFanOutList({ wids });
await websocket.ensureE2ESessions(fanList);
let shouldHaveIdentity = false;
const destination = await Promise.all(
fanList.map(async (wid) => {
const encKey = self.crypto.getRandomValues(new Uint8Array(32)).buffer;
const { type, ciphertext } = await functions.encryptMsgProtobuf(wid, 0, {
call: {
callKey: new Uint8Array(encKey),
},
});
shouldHaveIdentity = shouldHaveIdentity || type === 'pkmsg';
return websocket.smax(
'to',
{
jid: wid.toString({ legacy: true }),
},
[
websocket.smax(
'enc',
{
v: '2',
type: type,
count: '0',
},
ciphertext
),
]
);
})
);
const content: websocket.WapNode[] = [];
content.push(websocket.smax('destination', {}, destination));
if (shouldHaveIdentity) {
const identity = await multidevice.adv.getADVEncodedIdentity();
content.push(websocket.smax('device-identity', undefined, identity));
}
return content;
}