signal-desktop/ts/util/findStoryMessage.ts
2022-07-08 13:54:27 -07:00

82 lines
2.2 KiB
TypeScript

// Copyright 2022 Signal Messenger, LLC
// SPDX-License-Identifier: AGPL-3.0-only
import type { MessageAttributesType } from '../model-types.d';
import type { MessageModel } from '../models/messages';
import type { SignalService as Proto } from '../protobuf';
import * as log from '../logging/log';
import { find } from './iterables';
import { getContactId } from '../messages/helpers';
import { getTimestampFromLong } from './timestampLongUtils';
export async function findStoryMessage(
conversationId: string,
storyContext?: Proto.DataMessage.IStoryContext
): Promise<MessageModel | undefined> {
if (!storyContext) {
return;
}
const { authorUuid, sentTimestamp } = storyContext;
if (!authorUuid || !sentTimestamp) {
return;
}
const sentAt = getTimestampFromLong(sentTimestamp);
const ourConversationId =
window.ConversationController.getOurConversationIdOrThrow();
const inMemoryMessages = window.MessageController.filterBySentAt(sentAt);
const matchingMessage = find(inMemoryMessages, item =>
isStoryAMatch(
item.attributes,
conversationId,
ourConversationId,
authorUuid,
sentAt
)
);
if (matchingMessage) {
return matchingMessage;
}
log.info('findStoryMessage: db lookup needed', sentAt);
const messages = await window.Signal.Data.getMessagesBySentAt(sentAt);
const found = messages.find(item =>
isStoryAMatch(item, conversationId, ourConversationId, authorUuid, sentAt)
);
if (!found) {
log.info('findStoryMessage: message not found', sentAt);
return;
}
const message = window.MessageController.register(found.id, found);
return message;
}
function isStoryAMatch(
message: MessageAttributesType | null | undefined,
conversationId: string,
ourConversationId: string,
authorUuid: string,
sentTimestamp: number
): message is MessageAttributesType {
if (!message) {
return false;
}
const authorConversationId = window.ConversationController.ensureContactIds({
e164: undefined,
uuid: authorUuid,
});
return (
message.sent_at === sentTimestamp &&
getContactId(message) === authorConversationId &&
(message.conversationId === conversationId ||
message.conversationId === ourConversationId)
);
}