Adhiraj Singh
25 lines
798 B
TypeScript
25 lines
798 B
TypeScript
import { downloadContentFromMessage } from "./messages-media";
|
|
import { proto } from "../../WAProto";
|
|
import { promisify } from 'util'
|
|
import { inflate } from "zlib";
|
|
|
|
const inflatePromise = promisify(inflate)
|
|
|
|
export const downloadIfHistory = (message: proto.IMessage) => {
|
|
if(message.protocolMessage?.historySyncNotification) {
|
|
return downloadHistory(message.protocolMessage!.historySyncNotification)
|
|
}
|
|
}
|
|
|
|
export const downloadHistory = async(msg: proto.IHistorySyncNotification) => {
|
|
const stream = await downloadContentFromMessage(msg, 'history')
|
|
let buffer = Buffer.from([])
|
|
for await(const chunk of stream) {
|
|
buffer = Buffer.concat([buffer, chunk])
|
|
}
|
|
// decompress buffer
|
|
buffer = await inflatePromise(buffer)
|
|
|
|
const syncData = proto.HistorySync.decode(buffer)
|
|
return syncData
|
|
} |