get slack payload - save to backend

todo.js

module.exports = function(context, req) {
    //context.log('Node.js HTTP trigger function processed a request. RequestUri=%s', req.originalUrl);
    context.log('push data:', req.body);
    var str = req.body;
    var results = str.split("&");

    var slackText = getParam(results, "text").replace(/\+/g, " ").replace(/mytodo/g, "");
    var userName = getParam(results, "user_name").replace(/\+/g, " ");

    context.log(getParam(results, "token"));
    context.log(getParam(results, "channel_name"));
    context.log(userName);
    context.log(slackText);
    context.log(getParam(results, "trigger_word"));

    context.bindings.outputRecord = {
        title: slackText,
        details: "von " + userName,
        completed: false
    }

    context.done();
};

function getParam (array, paramName) {
    for (i = 0; i < array.length; i++) { 
        var res = array[i];
        if (res.includes(paramName)) {
            var param = res.substring(res.indexOf("=")+1);
            return param;
        }
    }
    return null;
}