// ==UserScript==
// @name         Feuerwache.net 411 Fix XMLHttpRequest
// @namespace    Feuerwache.net
// @version      8.0
// @description  Behebt leere POST Requests direkt am Browser-Transport
// @match        https://www.feuerwache.net/*
// @grant        none
// ==/UserScript==

(function () {
    'use strict';


    function status(text) {

        let box =
            document.getElementById("fw411-status");

        if (!box) {
            box = document.createElement("div");
            box.id = "fw411-status";

            box.style.position = "fixed";
            box.style.top = "10px";
            box.style.right = "10px";
            box.style.background = "green";
            box.style.color = "white";
            box.style.padding = "8px";
            box.style.zIndex = "999999";

            document.body.appendChild(box);
        }

        box.innerHTML = text;
    }


    status("🔥 Feuerwache 411 Fix 8.0 aktiv");


    const oldSend =
        XMLHttpRequest.prototype.send;


    XMLHttpRequest.prototype.send =
        function(body) {


            let url =
                this._fw_url || "";


            if (
                this._fw_method === "POST" &&
                (!body || body === "")
            ) {

                console.log(
                    "411 Fix aktiv:",
                    url
                );


                status(
                    "🔧 Leerer POST repariert"
                );


                body =
                    "fix=1";
            }


            return oldSend.call(
                this,
                body
            );

        };


    const oldOpen =
        XMLHttpRequest.prototype.open;


    XMLHttpRequest.prototype.open =
        function(method,url) {


            this._fw_method =
                method.toUpperCase();

            this._fw_url =
                url;


            return oldOpen.apply(
                this,
                arguments
            );

        };


})();