@vreden/meta/lib/Signal/Group/group-session-builder.js

Baileys is a lightweight JavaScript library for interacting with the WhatsApp Web API using WebSocket.

"use strict"

var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k
    var desc = Object.getOwnPropertyDescriptor(m, k)
    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
      desc = { enumerable: true, get: function() { return m[k] } }
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    Object.defineProperty(o, k2, desc)
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k
    o[k2] = m[k]
}))

var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
    Object.defineProperty(o, "default", { enumerable: true, value: v })
}) : function(o, v) {
    o["default"] = v
})

var __importStar = (this && this.__importStar) || (function () {
    var ownKeys = function(o) {
        ownKeys = Object.getOwnPropertyNames || function (o) {
            var ar = []
            for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k
            return ar
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        return ownKeys(o)
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    return function (mod) {
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        var result = {}
        if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i])
        __setModuleDefault(result, mod)
        return result
    }
})()

Object.defineProperty(exports, "__esModule", { value: true })

const keyhelper = __importStar(require("./keyhelper"))
const sender_key_distribution_message_1 = require("./sender-key-distribution-message")

class GroupSessionBuilder {
    constructor(senderKeyStore) {
        this.senderKeyStore = senderKeyStore
    }
    async process(senderKeyName, senderKeyDistributionMessage) {
        const senderKeyRecord = await this.senderKeyStore.loadSenderKey(senderKeyName)
        senderKeyRecord.addSenderKeyState(senderKeyDistributionMessage.getId(), senderKeyDistributionMessage.getIteration(), senderKeyDistributionMessage.getChainKey(), senderKeyDistributionMessage.getSignatureKey())
        await this.senderKeyStore.storeSenderKey(senderKeyName, senderKeyRecord)
    }
    async create(senderKeyName) {
        const senderKeyRecord = await this.senderKeyStore.loadSenderKey(senderKeyName)
        if (senderKeyRecord.isEmpty()) {
            const keyId = keyhelper.generateSenderKeyId()
            const senderKey = keyhelper.generateSenderKey()
            const signingKey = keyhelper.generateSenderSigningKey()
            senderKeyRecord.setSenderKeyState(keyId, 0, senderKey, signingKey)
            await this.senderKeyStore.storeSenderKey(senderKeyName, senderKeyRecord)
        }
        const state = senderKeyRecord.getSenderKeyState()
        if (!state) {
            throw new Error('No session state available')
        }
        return new sender_key_distribution_message_1.SenderKeyDistributionMessage(state.getKeyId(), state.getSenderChainKey().getIteration(), state.getSenderChainKey().getSeed(), state.getSigningKeyPublic())
    }
}

module.exports = {
  GroupSessionBuilder
}