naruyaizumi/lib/Socket/mex.js

A WebSockets library for interacting with WhatsApp Web

import { Boom } from "@hapi/boom";
import { getBinaryNodeChild, S_WHATSAPP_NET } from "../WABinary/index.js";
const wMexQuery = (variables, queryId, query, generateMessageTag) => {
    return query({
        tag: "iq",
        attrs: {
            id: generateMessageTag(),
            type: "get",
            to: S_WHATSAPP_NET,
            xmlns: "w:mex",
        },
        content: [
            {
                tag: "query",
                attrs: { query_id: queryId },
                content: Buffer.from(JSON.stringify({ variables }), "utf-8"),
            },
        ],
    });
};
export const executeWMexQuery = async (variables, queryId, dataPath, query, generateMessageTag) => {
    const result = await wMexQuery(variables, queryId, query, generateMessageTag);
    const child = getBinaryNodeChild(result, "result");
    if (child?.content) {
        const data = JSON.parse(child.content.toString());
        if (data.errors && data.errors.length > 0) {
            const errorMessages = data.errors
                .map((err) => err.message || "Unknown error")
                .join(", ");
            const firstError = data.errors[0];
            const errorCode = firstError.extensions?.error_code || 400;
            throw new Boom(`GraphQL server error: ${errorMessages}`, {
                statusCode: errorCode,
                data: firstError,
            });
        }
        const response = dataPath ? data?.data?.[dataPath] : data?.data;
        if (typeof response !== "undefined") {
            return response;
        }
    }
    const action = (dataPath || "").startsWith("xwa2_")
        ? dataPath.substring(5).replace(/_/g, " ")
        : dataPath?.replace(/_/g, " ");
    throw new Boom(`Failed to ${action}, unexpected response structure.`, {
        statusCode: 400,
        data: result,
    });
};
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