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session-desktop/ts/session/utils/Messages.ts

59 lines
1.9 KiB
TypeScript

import { RawMessage } from '../types/RawMessage';
import {
ContentMessage,
ExpirationTimerUpdateMessage,
} from '../messages/outgoing';
import { EncryptionType, PubKey } from '../types';
import { ClosedGroupMessage } from '../messages/outgoing/content/data/group/ClosedGroupMessage';
import { ClosedGroupNewMessage } from '../messages/outgoing/content/data/group/ClosedGroupNewMessage';
import _ from 'lodash';
import { ConversationModel } from '../../models/conversation';
import { ClosedGroupEncryptionPairReplyMessage } from '../messages/outgoing/content/data/group/ClosedGroupEncryptionPairReplyMessage';
function getEncryptionTypeFromMessageType(
message: ContentMessage
): EncryptionType {
// ClosedGroupNewMessage is sent using established channels, so using fallback
if (
message instanceof ClosedGroupNewMessage ||
message instanceof ClosedGroupEncryptionPairReplyMessage
) {
return EncryptionType.Fallback;
}
// 1. any ClosedGroupMessage which is not a ClosedGroupNewMessage must be encoded with ClosedGroup
// 2. if TypingMessage or ExpirationTimer and groupId is set => must be encoded with ClosedGroup too
if (
message instanceof ClosedGroupMessage ||
(message instanceof ExpirationTimerUpdateMessage && message.groupId)
) {
return EncryptionType.ClosedGroup;
} else {
return EncryptionType.Fallback;
}
}
export async function toRawMessage(
device: PubKey,
message: ContentMessage
): Promise<RawMessage> {
const timestamp = message.timestamp;
const ttl = message.ttl();
// window?.log?.debug('toRawMessage proto:', message.contentProto());
const plainTextBuffer = message.plainTextBuffer();
const encryption = getEncryptionTypeFromMessageType(message);
// tslint:disable-next-line: no-unnecessary-local-variable
const rawMessage: RawMessage = {
identifier: message.identifier,
plainTextBuffer,
timestamp,
device: device.key,
ttl,
encryption,
};
return rawMessage;
}