Sending support information for the diagnostic lab or hospital (Node.js)

In this use case, the user contacts the diagnostic center support with or without reference to a particular appointment via a specific channel like phone, email or chat

Code snippets

BPP receives protocol status

/*
Example Request JSON:
{
    "context": {
        "domain": "nic2004:85195",
        "country": "IND",
        "city": "std:080",
        "action": "support",
        "core_version": "0.9.2",
        "bap_id": "https://mock_bap.com/",
        "bap_uri": "https://mock_bap.com/beckn/",
        "transaction_id": "1239890342",
        "message_id": "123793824",
        "timestamp": "2021-03-23T10:00:40.065Z"
    },
    "message": {
        "ref_id": "order_1"
    }
}
*/
    router.post('/healthcare_diagnostics/support', support);

    function support({ headers, body }, res) {
        try {
            const message = _.get(body, "message");
            const context = _.get(body, "context");
            if (!context) {
                return res.status(400).send(httpResponse("NACK", "Missing Context"));
            }
            if (!message) {
                return res.status(400).send(httpResponse("NACK", "Missing Message"));
            }
            // ... Returns the ack immediately and continue the processing after validation
            res.status(200).send(httpResponse("ACK"));
            processSupport(headers, body)
        } catch (error) {
            res.status(500).send(httpResponse("NACK", error));
        }
    };

BPP processes the status

    function processSupport(requestHeaders, supportRequestBody) {
        // Execute business logic here
        let supportResponse = {}
        generateResponse(requestHeaders, supportResponse)
    }

BPP generates response

    async function generateResponse(requestHeaders, rawResponse){
    /*
    Example Request JSON :
    {
    "context": {
        "domain": "nic2004:85195",
        "country": "IND",
        "city": "std:080",
        "action": "on_support",
        "core_version": "0.9.2",
        "bap_id": "https://mock_bap.com/",
        "bap_uri": "https://mock_bap.com/beckn/",
        "transaction_id": "1239890342",
        "message_id": "123793824",
        "timestamp": "2021-03-23T10:00:40.065Z"
    },
    "message": {
        "phone": "+919898989898",
        "email": "[email protected]",
        "uri": "http://support.bpp.com?order_id=1"
    }
}
    */

        //The below code generates the above example JSON.
        let onSupportResponseBody = {}
        //call protocol on_support
        await callOnSupport(requestHeaders, onSupportResponseBody);
    }

BPP calls protocol on_support

    async function callOnSupport(requestHeaders, onSupportResponseBody) {
        // Take the subscriber Id from the header and calls the registry to get the url. If already cached it need not to call again
        const uri = await lookup(requestHeaders);
        // Construct Header
        const headers = constructAuthHeader(); // Auth Header with digital Signature
        return axios({ url: `${uri}/healthcare_diagnostics/on_support`, method: "POST", headers, data: onSupportResponseBody })
    }