let solarMqttClient;
let solarSvgUpdatePending = false;

const solarMQTT = {
    getMQTT: function () {
        const id = Math.random().toString(36).substring(7);
        const topic = "#";
        const connection = "wss://mqtt.nas.el-wa.org:443"
        mqttsolarTreeDone = false;
        // const connection = "ws://username:password@37.97.203.138:8083" // Works
        // const connection = "wss://public:public@public.cloud.shiftr.io" // Works
        const client = mqtt.connect(connection, {
            rejectUnauthorized: false,
        });
        solarMqttClient = client;

        client.on("message", messageReceived);
        client.on("connect", function () {
            client.subscribe("solarManager/#");
            client.subscribe("wattpilot/properties/lmo/state");
            client.subscribe("wattpilot/properties/ftt/state");
            client.subscribe("wattpilot/properties/fte/state");
            client.subscribe("wattpilot/properties/amp/state");
            client.subscribe("wattpilot/properties/car/state");
            client.subscribe("go-eCharger/270003/amp");
            client.subscribe("go-eCharger/270003/ate");
            client.subscribe("go-eCharger/270003/lmo");
            client.subscribe("go-eCharger/270003/att");
            client.subscribe("go-eCharger/270003/car");
            client.subscribe("weatherStation/#");
            client.subscribe("Gartenwasser/vorn/status");
            client.subscribe("Gartenwasser/vorn/Timers");
            client.subscribe("Gartenwasser/vorn/LastWatering");
            client.subscribe("Gartenwasser/vorn/WateringToday");
            client.subscribe("Gartenwasser/vorn/LastWateringDay");
            client.subscribe("Gartenwasser/hinten/status");
            client.subscribe("Gartenwasser/hinten/Timers");
            client.subscribe("Gartenwasser/hinten/LastWatering");
            client.subscribe("Gartenwasser/hinten/WateringToday");
            client.subscribe("Gartenwasser/hinten/LastWateringDay");
        });
        client.on("error", function (error) {
            //alert("MQTT Error: " + error);
        });
        client.on('end', function () {
            setTimeout(getMQTT, 5000);
            alert("MQTT Disconnected, try to reconnect in 5 secs.");
        })

        function getNestedProp(obj, path) {
            return path.split('/').reduce((acc, key) => acc && acc[key], obj);
        }
        function setNestedProp(obj, path, value) {
            var schema = obj;  // a moving reference to internal objects within obj
            var pList = path.split('/');
            var len = pList.length;
            for (var i = 0; i < len - 1; i++) {
            var elem = pList[i];
            if (!schema[elem]) schema[elem] = {}
            schema = schema[elem];
            }

            schema[pList[len - 1]] = value;
        }

        function messageReceived(topic, message) {
          mqttData[topic] = message;
          if (topic === "Gartenwasser/vorn/Timers" || topic === "Gartenwasser/hinten/Timers") {
            wateringTimersLastSeen[topic] = Date.now();
          }
          if (topic.startsWith("Gartenwasser/") && (topic.endsWith("/status") || topic.endsWith("/Timers") || topic.endsWith("/LastWatering")
              || topic.endsWith("/WateringToday") || topic.endsWith("/LastWateringDay"))) {
            updateWateringStatus();
          }
          if (topic == "solarManager/P_Load") {
            if (!solarSvgUpdatePending) {
              solarSvgUpdatePending = true;
              setTimeout(function () {
                solarSvgUpdatePending = false;
                solarSVG.updateValuesMQTT(mqttData);
              }, 1000);
            }
          }else if(topic == "weatherStation/windDeg"){
            setTimeout(function () { updateWeatherCards(name => mqttData["weatherStation/" + name]) }, 200); //give the object tree some time to build up and receive all values
          }
        }
    },
    publish: function (topic, payload, callback) {
      if (!solarMqttClient || !solarMqttClient.connected) {
        throw new Error("MQTT ist noch nicht verbunden.");
      }
      solarMqttClient.publish(topic, typeof payload === "string" ? payload : JSON.stringify(payload), callback);
    }
}

// Die Knoten im eingebetteten Realtime-SVG bleiben ueber die Lebensdauer der
// Seite bestehen. updateValuesMQTT fasst 104 davon an - bis zu einmal pro
// Sekunde -, deshalb werden sie einmal nachgeschlagen und dann behalten.
const svgElements = {};
function svgElement(id) {
    let node = svgElements[id];
    if (node === undefined) {
        node = svgElements[id] = document.getElementById(id);
    }
    return node;
}

// Nur schreiben, wenn sich der Wert wirklich geaendert hat. Jeder Schreibzugriff
// macht Style und Paint des Elements ungueltig - bei einem gefilterten Element
// wird dabei sein Filter neu gerastert. Gemessen waren rund 71 % der Zugriffe
// pro Update reine Wiederholungen desselben Werts; die entfallen damit.
const letzterWert = new Map();
function schreibe(schluessel, wert, anwenden) {
    const s = String(wert);
    if (letzterWert.get(schluessel) === s) return;
    letzterWert.set(schluessel, s);
    anwenden(s);
}
// textContent statt innerHTML: setzt einen Textknoten, ohne den HTML-Parser zu bemuehen.
function setText(id, wert)       { schreibe("t:" + id, wert, s => { svgElement(id).textContent = s; }); }
function setHTML(id, markup)     { schreibe("h:" + id, markup, s => { svgElement(id).innerHTML = s; }); }
function setAttr(id, name, wert) { schreibe("a:" + id + ":" + name, wert, s => { svgElement(id).setAttribute(name, s); }); }
function setDisplay(id, wert)    { schreibe("d:" + id, wert, s => { svgElement(id).style.display = s; }); }



// Punktgroesse einer Flusslinie setzen und die Animation anhalten, wenn kein
// Fluss anliegt. --w ist der Durchmesser, die CSS-Regel macht daraus den Radius
// aller Punkte der Gruppe. will-change nur solange die Gruppe laeuft: es fordert
// eine eigene Compositor-Ebene an, und die kostet Speicher.
function setFlowWidth(id, width) {
    const flow = svgElement(id);
    // Eine negative Breite heisst "kein Fluss in dieser Richtung" - die
    // Aufrufer rechnen 55*(1-exp(x)), was bei umgekehrtem Vorzeichen negativ
    // wird. Frueher zeichnete eine negative stroke-width schlicht nichts.
    // Math.max haelt das bei; Math.abs wuerde stattdessen einen Fluss in der
    // falschen Richtung mit voller Staerke anzeigen.
    const breite = Math.max(0, width);
    const sichtbar = breite >= 0.5;
    flow.style.setProperty("--w", breite + "px");
    flow.style.animationPlayState = sichtbar ? "running" : "paused";
    flow.style.willChange = sichtbar ? "transform" : "auto";
}

const solarSVG = {
    updateCnt: 99,
    /**
     * Beide Zwischenspeicher verwerfen - noetig, falls das SVG neu gezeichnet
     * wird. Nur die Knoten zu vergessen reicht nicht: letzterWert wuerde dann
     * jeden Schreibzugriff als "unveraendert" ueberspringen und das frische
     * SVG behielte seine Platzhalter.
     */
    fillElementArray: function () {
        for (const id in svgElements) delete svgElements[id];
        letzterWert.clear();
    },
    updateValuesMQTT: function (mqttData) {

        const angleFactor = 15000 / 288;
        const sixkWangleFactor = 6000 / 288;
        var cons = Number(mqttData["solarManager/P_Load"]);
        var pvn = JSON.parse(mqttData["solarManager/P_PVn"]);
        var pv = Number(mqttData["solarManager/P_PV"]);
        var pv2 = Number(pvn[1]);
        var pv1 = Number(pvn[0]);
        var pv3 = pv - (pv1 + pv2);
        var pbatt = Number(mqttData["solarManager/P_Akku"]);
        var limbatt = Number(mqttData["solarManager/crgMaxPct"]);
        var grid = Number(mqttData["solarManager/P_Grid"]);
        var soc = Number(mqttData["solarManager/SOC"]);
        var og = Number(mqttData["solarManager/og"]);
        var eg = Number(mqttData["solarManager/eg"]);
        var ug = Number(mqttData["solarManager/ug"]);
        var evsoc = Number(mqttData["solarManager/evSOC"]);
        var evlock = Number(mqttData["solarManager/evLock"]);
        var evMode = mqttData["solarManager/evMode"];
        var evPower = Number(mqttData["solarManager/evPower"]);
        var plugev = Number(mqttData["solarManager/evPlug"]);
        var fuelev = Number(mqttData["solarManager/evFuel"]);
        var heatOG = Number(mqttData["solarManager/heatOG"]);
        var heatEG = Number(mqttData["solarManager/heatEG"]);
        var puffO = Number(mqttData["solarManager/t_buffT"]);
        var puffM = Number(mqttData["solarManager/t_buffM"]);
        var puffU = Number(mqttData["solarManager/t_buffB"]);
        var heatMode = mqttData["solarManager/heatMode"];
        var carRemChrg = Number(mqttData["solarManager/carRemChrg"]);
        var aut = Number(mqttData["solarManager/autarky"]);
        var Pheat = Number(mqttData["solarManager/pHeat"]);
        var waterHeight = Number(mqttData["solarManager/waterHeight"]);
        var waterTemp = Number(mqttData["solarManager/waterTemp"]);
        var p_wr = Number(mqttData["solarManager/P_WR"]);
        var eff = Number(mqttData["solarManager/eff"]);
        var i_l1evu = Number(mqttData["solarManager/i_l1evu"]);
        var i_l2evu = Number(mqttData["solarManager/i_l2evu"]);
        var i_l3evu = Number(mqttData["solarManager/i_l3evu"]);
        var evPowerOG = Number(mqttData["solarManager/evPowerOG"]);
        var evPlugOG = Number(mqttData["solarManager/evPlugOG"]);
        var evModeOG = mqttData["solarManager/evModeOG"];

      
        var common = -cons - ug - eg + og ;
        if(common < 0){
          common = 0;
        }

        setAttr('consumerArc', "d", describeArc(100, 100, 95, 0, Math.round(-cons / angleFactor)));

        setAttr("ogArc", "d", describeArc(100, 100, 95, 0, Math.round(-og / angleFactor)));
        setText("consumerText", powerToString(-cons));

        setText("consumerTextAllg", "Gemein: "+powerToString(common));

        if (evPower > 0) {
            setDisplay("evCharge", "");
            if (carRemChrg > -1) {
                var today = new Date();
                today.setMinutes(today.getMinutes() + carRemChrg);
                var h = today.getHours();
                var m = today.getMinutes();
                if (h < 10)
                    h = "0" + h;
                if (m < 10)
                    m = "0" + m;
                setText("evRemText", h + ":" + m);
            }
        } else {
            setText("evRemText", "");
        }
        setText("ogText", powerToString(-og));
        setText("egText", powerToString(eg));
        setText("ugText", powerToString(ug));
        setText("pvText", powerToString(pv));
        setText("pv1txt", powerToString(pv1));
        setText("pv2txt", powerToString(pv2));
        setText("pv3txt", powerToString(pv3));
        setText("il1txt", Math.round(i_l1evu * 10) / 10 + " A");
        setText("il2txt", Math.round(i_l2evu * 10) / 10 + " A");
        setText("il3txt", Math.round(i_l3evu * 10) / 10 + " A");
        setText("batText", powerToString(pbatt));
        setText("heatText", powerToString(Pheat));
        setText("evText", powerToString(evPower * 1000));
        setText("evTextOG", powerToString(evPowerOG * 1000));
        setText("genText", "Autarkie: " + Math.round(aut) + " %");
        setText("genInfoText", "Wirkungsgrad: " + Math.round(eff) + " %");// powerToString(p_wr);
        setText("gridText", powerToString(grid));

        for (i = 0; i < pvn.length; i++) {
            setText("det_pv" + i + "P", powerToString(pvn[i]));
        }

        tttext = ""
        var i = 0;
        while (mqttData["solarManager/inverters" + i]) {
            if (mqttData["solarManager/inverters" + i+"/error"] > 0) {
                tttext = tttext + '<tspan x="0" dy="1.2em">' + mqttData["solarManager/inverters" + i+"/name"] + ":</tspan>"
                tttext = tttext + '<tspan x="160">' + "--" + " °C</tspan>"
                tttext = tttext + '<tspan x="215">' + "-- W" + "</tspan>"
            } else {
                tttext = tttext + '<tspan x="0" dy="1.2em">' + mqttData["solarManager/inverters" + i+"/name"] + ":</tspan>"
                tttext = tttext + '<tspan x="160">' + Math.round(mqttData["solarManager/inverters" + i+"/temp"]) + " °C</tspan>"
                tttext = tttext + '<tspan x="215">' + powerToString(mqttData["solarManager/inverters" + i+"/p_AC"]) + "</tspan>"
            }
            i++;
        }

        setHTML("invList", tttext);
        setAttr("egArc", "d", describeArc(100, 100, 95, 0, Math.round(eg / angleFactor)));
        setAttr("ugArc", "d", describeArc(100, 100, 95, 0, Math.round(ug / angleFactor)));
        setAttr("pvArc", "d", describeArc(100, 100, 95, 0, Math.round(pv1 / angleFactor)));
        setAttr("pv2Arc", "d", describeArc(100, 100, 95, Math.round(pv1 / angleFactor), Math.round(pv1 / angleFactor) + Math.round(pv2 / angleFactor)));
        setAttr("pv3Arc", "d", describeArc(100, 100, 95, Math.round(pv1 / angleFactor) + Math.round(pv2 / angleFactor), Math.round(pv1 / angleFactor) + Math.round(pv2 / angleFactor) + Math.round(pv3 / angleFactor)));

        if (pbatt < 0) {
            if (limbatt < 100) {
                setDisplay("charge", "none");
                setDisplay("batLim", "");
                setText("batLimText", Math.round(limbatt) + "%");
            } else {
                setDisplay("charge", "");
                setDisplay("batLim", "none");
            }
            setAttr("batArc", "d", describeArc(100, 100, 95, 0, Math.round(-pbatt / angleFactor)));
            setAttr("battani", "class", "stream-rev");
            setFlowWidth("battani", 55 * (1 - Math.exp(pbatt / 2000)));
        } else {
            setDisplay("charge", "none");
            setDisplay("batLim", "none");
            setAttr("batArc", "d", describeArc(100, 100, 95, 0, Math.round(pbatt / angleFactor)));
            setAttr("battani", "class", "stream");
            setFlowWidth("battani", 55 * (1 - Math.exp(-pbatt / 2000)));
        }
        setAttr("batChargeState", "y", (100 - soc) + "%");
        //setAttr("heatChargeState", "y", 100 - ((((puffO + puffM) / 2) - 30) * 1.66) + "%");
        setAttr('tmpH', "stop-color", assignColor("#2389BA", "#BA3B23", 20, 80, puffO));
        setAttr('tmpM', "stop-color", assignColor("#2389BA", "#BA3B23", 20, 80, puffM));
        setAttr('tmpL', "stop-color", assignColor("#2389BA", "#BA3B23", 20, 80, puffU));
        setText("batSOC", soc + " %");
        setAttr("evArc", "d", describeArc(100, 100, 95, 0, Math.round(evPower * 2000 / angleFactor)));
        setAttr("evChargeState", "y", (100 - evsoc) + "%");
        setText("evSOC", evsoc + " %");
        setText("evFuel", fuelev + " %");

        setAttr("heatArc", "d", describeArc(100, 100, 95, 0, Math.round(Pheat / sixkWangleFactor)));
        setText("heatUp", Math.round(puffO * 10) / 10 + " °C");
        setText("heatDown", Math.round(puffM * 10) / 10 + " °C");

        if (evlock == false) {
            setDisplay("evLock", "none");
        } else {
            setDisplay("evLock", "");
        }
        if (heatMode == "eco") {
            setDisplay("heatEco", "");
            setDisplay("heatDefault", "none");
        } else {
            setDisplay("heatEco", "none");
            setDisplay("heatDefault", "");
        }
        if (evMode == "Eco") {
            setDisplay("evEco", "");
            setDisplay("evNextTrip", "none");
            setDisplay("evDefault", "none");
        } else if (evMode == "Next Trip") {
            setDisplay("evEco", "none");
            setDisplay("evNextTrip", "");
            setDisplay("evDefault", "none");
        } else {
            setDisplay("evEco", "none");
            setDisplay("evNextTrip", "none");
            setDisplay("evDefault", "");
        }
        if (heatOG) {
            setDisplay("heatOG", "");
        } else {
            setDisplay("heatOG", "none");
        }
        if (heatEG) {
            setDisplay("heatEG", "");
        } else {
            setDisplay("heatEG", "none");
        }
        // solarManager/evPlug kommt als 1 oder 0, wie evPlugOG. Frueher kam
        // hier der Text der Wallbox an ("no car", "charging", ...); Number()
        // machte daraus NaN, und NaN != "no car" ist immer wahr - das
        // Steckersymbol stand dauerhaft da. Den Text weiter zu verstehen
        // kostet eine Zeile und haelt die Anzeige richtig, egal ob der
        // Manager schon neu gestartet ist oder nicht.
        const plugText = mqttData["solarManager/evPlug"];
        if (isNaN(plugev) ? (plugText !== undefined && plugText !== "no car") : plugev > 0) {
            setDisplay("evPlug", "");
        } else {
            setDisplay("evPlug", "none");
        }
        if (evModeOG == "Eco") {
            setDisplay("evEcoOG", "");
            setDisplay("evNextTripOG", "none");
            setDisplay("evDefaultOG", "none");
        } else if (evModeOG == "Next Trip") {
            setDisplay("evEcoOG", "none");
            setDisplay("evNextTripOG", "");
            setDisplay("evDefaultOG", "none");
        } else {
            setDisplay("evEcoOG", "none");
            setDisplay("evNextTripOG", "none");
            setDisplay("evDefaultOG", "");
        }
        if (evPlugOG > 0) {
            setDisplay("evPlugOG", "");
        } else {
            setDisplay("evPlugOG", "none");
        }
        if (grid < 0) {
            setAttr("gridArc", "d", describeArc(100, 100, 95, 0, -grid / angleFactor));
            setAttr("consGridani", "class", "stream-rev");
            setFlowWidth("consGridani", 55 * (1 - Math.exp(grid / 2000)));
        } else {
            setAttr("gridArc", "d", describeArc(100, 100, 95, 0, grid / angleFactor));
            setAttr("consGridani", "class", "stream");
            setFlowWidth("consGridani", 55 * (1 - Math.exp(-grid / 2000)));
        }

        setFlowWidth("consEVani", 55 * (1 - Math.exp(-evPower)));
        setFlowWidth("consEVOGani", 55 * (1 - Math.exp(-evPowerOG)));
        setFlowWidth("consOGani", 55 * (1 - Math.exp(og / 2000)));

        setFlowWidth("consUGani", 55 * (1 - Math.exp( -ug / 2000)));

        setFlowWidth("consHeatAni", 55 * (1 - Math.exp(-Pheat / 2000)));
        setFlowWidth("consAni", 55 * (1 - Math.exp(cons / 2000)));
        setFlowWidth("consEGani", 55 * (1 - Math.exp(-eg / 2000)));
        setFlowWidth("pvani", 55 * (1 - Math.exp(-pv / 2000)));
}

}

var chartSettings = {
    type: 'line',
    options: {
      animation: true,
      plugins: {
        annotation: {
          common: { type: 'box', drawTime: 'beforeDatasetsDraw', yScaleID: 'y-axis-0', backgroundColor: 'rgba(255, 255, 255, 0.05)', init: true },
          annotations: []
        },
        tooltip: {
          position: 'nearest',
          pointStyle: "circle",
          boxWidth: 4,
          usePointStyle: true,
          callbacks: {
            footer: function (tooltipItems){return ""},
          },
        },
        legend: {
          position: "bottom",
          labels: {
            pointStyleWidth: 10,
            usePointStyle: true,
            pointStyle: "line",
          }
        },
      },
      responsive: true,
      maintainAspectRatio: false,
      interaction: {
        intersect: false,
        mode: 'index',
      },
      scales: {
        x: {
          adapters: {
            date: {
              locale: "DE-de"
            }
          },
          ticks: {

          },
          type: 'timestack',
        },
        y: {
          stacked: true,
          display: true,
          min: 0,
          position: 'left',
          ticks: {
            callback: value => `${value / 1000} kW`,
          },
          /*title: {
            display: true,
            text: "Leistung"
          }*/
        },
        y1: {
          stacked: false,
          display: true,
          position: 'right',
          min: 0,
          max: 100,
          ticks: {
            callback: value => `${value} %`,
          },
          /*title: {
            display: true,
            text: "Ladestand"
          },*/
          data:{}
        }
      }
    }
  };

  var forecastChartSettings = {
    type: 'bar',
    options: {
      animation: true,
      plugins: {
        tooltip: {
          position: 'nearest',
          pointStyle: "circle",
          boxWidth: 4,
          usePointStyle: true,
          callbacks: {
            footer: function (tooltipItems){return ""},
          },
        },
        legend: {
          position: "bottom",
          labels: {
            pointStyleWidth: 10,
            usePointStyle: true,
            pointStyle: "line",
          }
        },
      },
      responsive: true,
      maintainAspectRatio: false,
      interaction: {
        intersect: false,
        mode: 'index',
      },
      scales: {
        x: {
          adapters: {
            date: {
              locale: "DE-de"
            }
          },
          ticks: {
          },
          type: 'timestack',
          timestack:{
            right_floating_tick_thres: 0.3,
            format_style: {month: 'long'},
          }
        },
        y: {
          stacked: false,
          display: true,
          position: 'left',
          ticks: {
            callback: value => `${value / 1000} kW`,
          },
          /*title: {
            display: true,
            text: "Leistung"
          }*/
        },
      }
    }
  };

  var modalEV = new bootstrap.Modal(document.getElementById('modalEV'), {
    keyboard: false
  });
  var chartData = {};
  var mqttData = {};
  var timeFrom = -24;
  var timeTo = 12;
  const dayRange = () => ({ FROM: timeFrom, TO: timeTo });
  const consChart = new Chart(
    document.querySelector('#consumption-chart'),
    Object.assign({}, chartSettings)
  );
  const prodChart = new Chart(
    document.querySelector('#production-chart'),
    Object.assign({}, chartSettings)
  );

  const foreChart = new Chart(
    document.querySelector('#forecast-chart'),
    Object.assign({}, forecastChartSettings)
  );

  function updateCharts(){
    getData(consChart, 'ajax/getConsData.php', { params: dayRange, sunrise: true, autoUpdate: false, updateMode: "none" });
    getData(prodChart, 'ajax/getProdData.php', { params: dayRange, sunrise: true, autoUpdate: false, updateMode: "none" });
  }

  function prevDay(){
    timeFrom -= 24;
    timeTo -= 24;

    var now = new Date();
    now.setDate(now.getDate()+1+(timeFrom/24));
    var day = ("0" + now.getDate()).slice(-2);
    var month = ("0" + (now.getMonth() + 1)).slice(-2);
    var selected = now.getFullYear()+"-"+(month)+"-"+(day);
    document.getElementById("DatePickerCons").value = selected;
    document.getElementById("DatePickerProd").value = selected;
    updateCharts();
  }

  function changeDay(e){
    const date1 = new Date(e.target.value);
    const date2 = new Date();
    const difference = Math.floor((date1.getTime() - date2.getTime()) / (1000*60*60*24)) *24;
    timeFrom = difference;
    timeTo = difference+36;   
    updateCharts();
      //.then((ret) => enableEvents());
  }
  
  function nextDay(){
    timeFrom += 24;
    timeTo += 24;
    var now = new Date();
    now.setDate(now.getDate()+1+(timeFrom/24));
    var day = ("0" + now.getDate()).slice(-2);
    var month = ("0" + (now.getMonth() + 1)).slice(-2);
    var selected = now.getFullYear()+"-"+(month)+"-"+(day);
    document.getElementById("DatePickerCons").value = selected;
    document.getElementById("DatePickerProd").value = selected;
    updateCharts();
  }

  document.addEventListener('readystatechange', function () {
    if (event.target.readyState === "complete") {
      solarMQTT.getMQTT();
      getData(consChart, 'ajax/getConsData.php', { params: dayRange, sunrise: true, updateMode: "none" });
      getData(prodChart, 'ajax/getProdData.php', { params: dayRange, sunrise: true, updateMode: "none" });
      getData(foreChart, 'ajax/getForecastData.php', { params: dayRange, updateMode: "none" });
      // Dieselbe Statistik wie auf der Historienseite, nur das laufende Jahr:
      // hier ist sie Beiwerk, dort der Zweck der Seite.
      baueJahresstatistik(document.getElementById("Stats-Year"),
                          { spalten: 1, werkzeuge: false, fussnoten: false });
      solarSVG.fillElementArray();
      mountMeteogram();
    }
  });



  // Setzt den Schieberegler aus den Wattstunden, die die Wallbox meldet.
  function setzeLadeRegler(wattstunden) {
    const regler = document.getElementById("modal-slider");
    const whProProzent = Number(regler.dataset.whProProzent);
    if (whProProzent > 0) {
      regler.value = Math.round(Number(String(wattstunden)) / whProProzent);
    }
  }

  function openModal(type) {
    document.getElementById("modalSaveBtn").style.display = type === "watering" ? "none" : "";
    switch(type){
      case "CarEG":
        document.getElementById("modal-title").innerHTML = "Autoladung EG";
        contentURL = "ajax/carEG.php";
        break;
      case "CarOG":
        document.getElementById("modal-title").innerHTML = "Autoladung OG";
        contentURL = "ajax/carOG.php";
        break;
      case "heater":
        document.getElementById("modal-title").innerHTML = "Steuerung Heizstab";
        contentURL = "ajax/heater.php";
        break;
      case "watering":
        document.getElementById("modal-title").innerHTML = "Gartenbewässerung";
        contentURL = window.location.pathname.replace(/\/index\.php$/, "").replace(/\/$/, "") + "/ajax/watering.php";
        break;
      default:
        document.getElementById("modal-title").innerHTML = "Fehler";
        contentURL = "";
        break;
    }
    
    modalBodyElement = document.getElementById('modal-body');
    modalBodyElement.innerHTML = loadingHTML("Wird geladen...");
    document.getElementById("modalSaveBtn").addEventListener("click", submitFormAjax);
    document.getElementById("modalSaveBtn").contentURL = contentURL;
    modalEV.show();
    fetch(contentURL, {
      method: 'GET',
      headers: {
        'X-Requested-From-Modal': 'a',
        'Requested-With-Ajax': 'ajax'
      }
    })
      .then(response => response.text())
      .then(html => {
        modalBodyElement.innerHTML = html;
        
        var slider = document.getElementById("modal-slider");
        var span = document.getElementById("modal-slider-label");
        switch(type){
          case "CarEG":
            bindModalSlider(slider, span, value => value + "%");
            document.getElementById("evStart/Stop").addEventListener("click", submitFormAjax);
            document.getElementById("evStart/Stop").contentURL = contentURL;
            mode = new TextDecoder().decode(mqttData["wattpilot/properties/lmo/state"]);
            time = String(mqttData["wattpilot/properties/ftt/state"]);
            energy = mqttData["wattpilot/properties/fte/state"];
            amp = new TextDecoder().decode(mqttData["wattpilot/properties/amp/state"]);
            car = new TextDecoder().decode(mqttData["wattpilot/properties/car/state"]);
            charge = Number(mqttData["solarManager/p_l1ev"])+Number(mqttData["solarManager/p_l2ev"])+Number(mqttData["solarManager/p_l3ev"])
            if (charge < 0.2) { document.getElementById("evStart/Stop").innerHTML = 'Laden starten' }
            else { document.getElementById("evStart/Stop").innerHTML = 'Laden stoppen' }
            if (mode == "Awattar") { document.getElementById("EV_Eco").click(); }
            else if (mode == "Default") { document.getElementById("EV_Default").click(); }
            else if (mode == "AutomaticStop") { document.getElementById("EV_NextTrip").click(); }
            else { alert(mode); }
            document.getElementById("EV_NextTripTime").value = time.toHHMM();
            // Wattstunden je Prozent liefert das Formular mit (carForm.php);
            // die Akkugroesse steht in restricted/config.php. Frueher standen
            // hier feste 14000 Wh - fuer beide Autos dasselbe, und fuer keines
            // von beiden richtig.
            setzeLadeRegler(energy);
            document.getElementById("modal-slider").dispatchEvent(new Event('input'));
            if (amp == "16") { document.getElementById("EV_16A").click(); }
            else if (amp == "10") { document.getElementById("EV_10A").click(); }
            else if (amp == "6") { document.getElementById("EV_6A").click(); }
            break;
          case "CarOG":
            bindModalSlider(slider, span, value => value + "%");
            document.getElementById("evStart/Stop").addEventListener("click", submitFormAjax);
            document.getElementById("evStart/Stop").contentURL = contentURL;
            mode = mqttData["go-eCharger/270003/lmo"];
            time = String(mqttData["go-eCharger/270003/att"]);
            energy = mqttData["go-eCharger/270003/ate"];
            amp = mqttData["go-eCharger/270003/amp"];
            car = mqttData["go-eCharger/270003/car"];
            if (car != "2") { document.getElementById("evStart/Stop").innerHTML = 'Laden starten' }
            else { document.getElementById("evStart/Stop").innerHTML = 'Laden stoppen' }
            if (mode == "4") { document.getElementById("EV_Eco").click(); }
            else if (mode == "3") { document.getElementById("EV_Default").click(); }
            else if (mode == "5") { document.getElementById("EV_NextTrip").click(); }
            else { alert(mode); }
            document.getElementById("EV_NextTripTime").value = time.toHHMM();
            // Wattstunden je Prozent liefert das Formular mit (carForm.php);
            // die Akkugroesse steht in restricted/config.php. Frueher standen
            // hier feste 14000 Wh - fuer beide Autos dasselbe, und fuer keines
            // von beiden richtig.
            setzeLadeRegler(energy);
            document.getElementById("modal-slider").dispatchEvent(new Event('input'));
            if (amp == "16") { document.getElementById("EV_16A").click(); }
            else if (amp == "10") { document.getElementById("EV_10A").click(); }
            else if (amp == "6") { document.getElementById("EV_6A").click(); }
            break;
            case "heater":
              bindModalSlider(slider, span, value => value == 0 ? "Automatik" : (value / 10) + " kW");
              if(mqttData["solarManager/heatMode"] == "eco"){
                document.getElementById("modal-slider").value = 0;
              }else{
                document.getElementById("modal-slider").value = Math.round(mqttData["solarManager/pHeat"]/100);
              }
              document.getElementById("modal-slider").dispatchEvent(new Event('input'));
              break;
          case "watering":
            initializeWateringModal();
            break;
        }

      })
      .catch(error => {
        modalBodyElement.innerHTML = error.message;
      });
  }

  const wateringTimersLastSeen = {};
  // Eine Tabelle fuer alles: Ventil, Beschriftung und die Anzeige-Ids im
  // Realtime-SVG. Vorher standen dieselben Zuordnungen in drei getrennten
  // Tabellen.
  const wateringZones = {
    troughs: {
      topic: "Gartenwasser/vorn", valve: 1, label: "Tröge",
      statusId: "wateringTroughStatus", iconId: "wateringTroughIcon"
    },
    frontGarden: {
      topic: "Gartenwasser/vorn", valve: 6, label: "Vorn",
      statusId: "wateringFrontStatus", iconId: "wateringFrontIcon"
    },
    raisedBeds: {
      topic: "Gartenwasser/hinten", valve: 6, label: "Beete",
      statusId: "wateringBedsStatus", iconId: "wateringBedsIcon"
    }
  };
  // Feste Liste - der Sekundentakt soll sie nicht jedes Mal neu aufbauen.
  const wateringZoneList = Object.entries(wateringZones);

  function wateringCommand(topic, command, directTopic = false) {
    const feedback = document.getElementById("watering-feedback");
    const targetTopic = directTopic ? topic : topic + "/set";
    const payload = typeof command === "string" ? command : JSON.stringify(command);
    const endpoint = window.location.pathname.replace(/\/index\.php$/, "").replace(/\/$/, "") + "/ajax/watering.php";
    const showFeedback = (message, type) => {
      if (!feedback) return;
      feedback.textContent = message;
      feedback.className = "alert alert-" + type + " mb-3";
      feedback.style.whiteSpace = "pre-line";
    };
    fetch(endpoint, {
      method: "POST",
      credentials: "same-origin",
      headers: { "Content-Type": "application/x-www-form-urlencoded" },
      body: new URLSearchParams({ topic: targetTopic, payload: payload })
    }).then(async (response) => {
      const result = await response.json();
      if (!response.ok || !result.success) throw new Error(result.message || "Unbekannter MQTT-Fehler.");
      showFeedback("Befehl gesendet.\nTopic: " + result.topic + "\nInhalt: " + result.payload, "success");
    }).catch((error) => {
      showFeedback("Befehl konnte nicht gesendet werden: " + error.message + "\nTopic: " + targetTopic + "\nInhalt: " + payload, "danger");
    });
  }

  function initializeWateringModal() {
    document.querySelectorAll("[data-watering-toggle]").forEach((button) => {
      const updateButton = () => {
        const zone = wateringZones[button.dataset.wateringZone];
        setzeZonenButton(button, wateringLabel(zone.topic, zone.valve));
      };
      button.addEventListener("click", () => {
        const zone = wateringZones[button.dataset.wateringZone];
        if (wateringLabel(zone.topic, zone.valve) === "aus") {
          const timerInput = document.querySelector(`[data-watering-timer='${button.dataset.wateringZone}']`);
          const timer = Math.min(120, Math.max(1, Number(timerInput.value) || 30));
          wateringCommand(zone.topic, { valve: zone.valve, set: "open", timer: timer });
        } else {
          wateringCommand(zone.topic, { valve: zone.valve, set: "close" });
        }
      });
      updateButton();
    });
    document.querySelectorAll("[data-watering-auto-toggle]").forEach((button) => {
      button.addEventListener("click", () => {
        const topics = (button.dataset.wateringTopics || button.dataset.wateringTopic).split(",");
        const modes = button.dataset.wateringAuto.split(",");
        const active = topics.every((topic, index) => wateringAutoActive(topic, modes[index]));
        topics.forEach((topic, index) => {
          wateringCommand(topic + "/auto", active ? "Stop" : modes[index], true);
        });
      });
      updateWateringAutoButton(button);
    });
    updateWateringStatus();
  }

  // Die Anzeige laeuft im Sekundentakt, die Nutzlasten aendern sich aber nur,
  // wenn eine neue MQTT-Nachricht kommt. messageReceived legt dabei jedes Mal
  // ein neues Buffer-Objekt ab - der Identitaetsvergleich reicht also als
  // Gueltigkeitspruefung, ein Invalidieren von Hand braucht es nicht.
  const wateringJsonCache = {};
  const wateringDecoder = new TextDecoder();

  function wateringJson(topic) {
    const value = mqttData[topic];
    if (!value) return null;
    const cached = wateringJsonCache[topic];
    if (cached && cached.raw === value) return cached.parsed;

    let parsed = null;
    try {
      parsed = JSON.parse(typeof value === "string" ? value : wateringDecoder.decode(value));
    } catch (error) {
      parsed = null;
    }
    wateringJsonCache[topic] = { raw: value, parsed: parsed };
    return parsed;
  }

  function wateringHistory(topic, valve) {
    const data = wateringJson(topic + "/LastWatering");
    if (!data) return { dateTime: "--", duration: "--" };
    return {
      dateTime: data["wateringDateTime" + valve] || "--",
      duration: data["wateringDurationSecs" + valve] !== undefined
        ? wateringTimeLabel(Number(data["wateringDurationSecs" + valve]))
        : "--"
    };
  }

  // Tagesdatum im Format der Ventilsteuerung ("29.08.26").
  function wateringDayStamp(date) {
    const zwei = (zahl) => String(zahl).padStart(2, "0");
    return zwei(date.getDate()) + "." + zwei(date.getMonth() + 1) + "." + zwei(date.getFullYear() % 100);
  }

  // Tagessummen der Ventilsteuerung: WateringToday fuer den laufenden Tag,
  // LastWateringDay fuer den letzten Tag, an dem ueberhaupt bewaessert wurde.
  // Beide Nutzlasten tragen den zugehoerigen Tag als "wateringDay" mit. Bei
  // WateringToday wird der geprueft - die Nachricht ist retained, nach einem
  // Tageswechsel ohne Bewaesserung stuende sonst die Summe von gestern als
  // "heute" in der Karte.
  function wateringDayTotal(topic, subTopic, feld, valve, mussHeuteSein) {
    const data = wateringJson(topic + "/" + subTopic);
    if (!data) return { label: "--", day: "", sekunden: null };
    const tag = data.wateringDay || "";
    const sekunden = data[feld + valve];
    if (sekunden === undefined) return { label: "--", day: tag, sekunden: null };
    if (mussHeuteSein && tag !== wateringDayStamp(new Date())) {
      return { label: "--", day: tag, sekunden: null };
    }
    return { label: wateringTimeLabel(Number(sekunden)), day: tag, sekunden: Number(sekunden) };
  }

  function wateringAutoActive(topic, mode) {
    const timers = wateringJson(topic + "/Timers");
    return !!(timers && timers.auto === mode);
  }

  function wateringValue(data, valve) {
    if (!data) return null;
    const candidates = [
      data.timers && data.timers[valve],
      data.timers && data.timers[String(valve)],
      data[valve],
      data[String(valve)],
      data.valves && data.valves[valve],
      data.valves && data.valves[String(valve)],
      data.status && data.status[valve],
      data.status && data.status[String(valve)],
      data.valveState && data.valveState[valve],
      data.valveState && data.valveState[String(valve)],
      data.setValveState && data.setValveState[valve],
      data.setValveState && data.setValveState[String(valve)]
    ];
    for (const candidate of candidates) {
      if (candidate !== undefined) return candidate;
    }
    return null;
  }

  function wateringState(value) {
    if (value && typeof value === "object") {
      return value.state ?? value.status ?? value.valveState ?? value.set;
    }
    return value;
  }

  function wateringSeconds(value) {
    if (value && typeof value === "object") {
      value = value.remaining ?? value.timer ?? value.seconds ?? value.time;
    }
    return Number(value);
  }

  function wateringLabel(topic, valve) {
    const timers = wateringJson(topic + "/Timers");
    const status = wateringJson(topic + "/status");
    const lastSeen = wateringTimersLastSeen[topic + "/Timers"];
    if (!lastSeen || Date.now() - lastSeen > 3000) return "aus";
    const remaining = wateringValue(timers, valve);
    if (remaining !== null) {
      const seconds = wateringSeconds(remaining);
      if (seconds !== 0) return wateringTimeLabel(Math.abs(seconds));
      return "aus";
    }
    const state = wateringState(wateringValue(status, valve));
    if (state === true || state === 1 || state === "1" || state === "open" || state === "OPEN") return "an";
    if (state === false || state === 0 || state === "0" || state === "close" || state === "closed" || state === "CLOSED") return "aus";
    return "--";
  }

  function wateringTimeLabel(seconds) {
    if (seconds < 60) return seconds + "s";
    return Math.ceil(seconds / 60) + "m";
  }

  function wateringIsPaused(topic, valve) {
    const timers = wateringJson(topic + "/Timers");
    const remaining = wateringValue(timers, valve);
    return remaining !== null && wateringSeconds(remaining) < 0;
  }

  function updateWateringStatus() {
    wateringZoneList.forEach(([key, zone]) => {
      const state = wateringLabel(zone.topic, zone.valve);
      const paused = wateringIsPaused(zone.topic, zone.valve);
      const heute = wateringDayTotal(zone.topic, "WateringToday", "wateringDurationTodaySecs", zone.valve, true);
      // Die Regenautomatik laeuft zum Sonnenaufgang; wenn jemand auf die
      // Anzeige schaut, ist die Entscheidung laengst gefallen. Angezeigt wird
      // deshalb nicht mehr, was geplant ist, sondern was passiert ist. Der
      // Zaehler unterscheidet nicht, wer ausgeloest hat - eine Bewaesserung
      // von Hand zaehlt genauso, und das ist so gewollt.
      const bewaessert = state === "aus" && heute.sekunden > 0;

      // Die Anzeigen liegen im Realtime-SVG und bleiben bestehen -> svgElement.
      const status = svgElement(zone.statusId);
      const icon = svgElement(zone.iconId);
      if (status && icon) updateWateringIndicator(status, icon, zone.label, state, paused, bewaessert);

      // Die Modal-Elemente werden bei jedem Oeffnen neu erzeugt -> nicht cachen.
      setzeZonenButton(document.querySelector(`[data-watering-toggle][data-watering-zone='${key}']`), state);
      setzeSchild(`[data-watering-state='${key}']`, state, paused, bewaessert);

      const history = wateringHistory(zone.topic, zone.valve);
      setzeZelle(`[data-watering-last='${key}']`, history.dateTime);
      setzeZelle(`[data-watering-duration='${key}']`, history.duration);
      const vortag = wateringDayTotal(zone.topic, "LastWateringDay", "wateringDurationDaySecs", zone.valve, false);
      setzeZelle(`[data-watering-today='${key}']`, heute.label, heute.day && "Stand: " + heute.day);
      setzeZelle(`[data-watering-prevday='${key}']`, vortag.label, vortag.day && "Bewässerungstag: " + vortag.day);
    });
    document.querySelectorAll("[data-watering-auto-toggle]").forEach(updateWateringAutoButton);
  }

  // Der Knopf zeigt die naechste Aktion, nicht den Zustand: laeuft die Zone,
  // steht "Aus" darauf.
  function setzeZonenButton(button, state) {
    if (!button) return;
    const beschriftung = state === "aus" ? "Ein" : "Aus";
    if (button.textContent !== beschriftung) button.textContent = beschriftung;
    button.classList.toggle("btn-success", state === "aus");
    button.classList.toggle("btn-danger", state !== "aus");
  }

  // Zustandsschild der Zonenkarte, Farben wie im SVG: laufend gruen,
  // pausiert gelb, heute schon bewaessert blau, sonst grau.
  function setzeSchild(selektor, state, paused, bewaessert) {
    const schild = document.querySelector(selektor);
    if (!schild) return;
    let text = "unbekannt";
    let farbe = "bg-secondary";
    if (state !== "--" && state !== "aus") {
      text = paused ? "pausiert " + state : "läuft " + state;
      farbe = paused ? "bg-warning text-dark" : "bg-success";
    } else if (state === "aus") {
      text = bewaessert ? "heute bewässert" : "aus";
      farbe = bewaessert ? "bg-primary" : "bg-secondary";
    }
    if (schild.textContent !== text) schild.textContent = text;
    const klasse = "badge " + farbe;
    if (schild.className !== klasse) schild.className = klasse;
  }

  // Schreibt nur bei echter Aenderung - die Tabelle wird im Sekundentakt
  // aktualisiert, ihre Werte aendern sich aber hoechstens minuetlich.
  function setzeZelle(selektor, text, titel) {
    const element = document.querySelector(selektor);
    if (!element) return;
    if (element.textContent !== text) element.textContent = text;
    if (titel) {
      if (element.getAttribute("title") !== titel) element.setAttribute("title", titel);
    } else if (element.hasAttribute("title")) {
      element.removeAttribute("title");
    }
  }

  function updateWateringAutoButton(button) {
    const topics = (button.dataset.wateringTopics || button.dataset.wateringTopic).split(",");
    const modes = button.dataset.wateringAuto.split(",");
    const active = topics.every((topic, index) => wateringAutoActive(topic, modes[index]));
    if (!button.dataset.wateringLabel) {
      button.dataset.wateringLabel = button.textContent.replace(/^Automatik\s+/, "");
    }
    button.textContent = (active ? "Aus: " : "Ein: ") + button.dataset.wateringLabel;
    button.classList.toggle("btn-outline-primary", !active);
    button.classList.toggle("btn-outline-danger", active);
  }

  function updateWateringIndicator(status, icon, name, state, paused, bewaessert) {
    // "Aus" bleibt stehen, solange die Zone heute noch kein Wasser hatte;
    // danach ersetzt das Haekchen (U+2713, ohne Emoji-Variationsselektor ->
    // einfarbig, folgt der Icon-Farbe) den Text, um Platz auf der textPath zu
    // sparen. Laeuft im Sekundentakt, aendert sich aber selten - ohne Pruefung
    // wuerde jede Sekunde derselbe Wert geschrieben und das Icon samt
    // Filter neu gezeichnet.
    const text = state === "aus" ? (bewaessert ? "✓" : "Aus") : state;
    if (status.textContent !== text) status.textContent = text;
    // Das Blau ("#3A6292") entspricht dem Wassertropfen-Icon (id="water").
    const color = state !== "aus" ? (paused ? "#ffc107" : "#20c997") : bewaessert ? "#3A6292" : "#6c757d";
    if (icon.getAttribute("color") !== color) {
      icon.setAttribute("color", color);
      icon.setAttribute("fill", color);
      icon.style.color = color;
    }
    const titel = name + ": " + (state === "aus" && bewaessert ? "Aus (heute bereits bewässert)" : state);
    const titelKnoten = icon.querySelector("title");
    if (titelKnoten.textContent !== titel) titelKnoten.textContent = titel;
  }

  window.setInterval(updateWateringStatus, 1000);






  function polarToCartesian(centerX, centerY, radius, angleInDegrees) {
    var angleInRadians = (angleInDegrees - 90) * Math.PI / 180.0;

    return {
      x: centerX + (radius * Math.cos(angleInRadians)),
      y: centerY + (radius * Math.sin(angleInRadians))
    };
  }

  function getRBGComponent(colRange, minCol, valRange, minVal, val) {
    return Math.round(((val - minVal) / valRange) * colRange + minCol)
      .toString(16)
      .toUpperCase()
      .padStart(2, '0');
  }

  function assignColor(minCol, maxCol, minVal, maxVal, val) {
    var color = "";
    var minR = parseInt(minCol.substring(1, 3), 16);
    var maxR = parseInt(maxCol.substring(1, 3), 16);
    var minG = parseInt(minCol.substring(3, 5), 16);
    var maxG = parseInt(maxCol.substring(3, 5), 16);
    var minB = parseInt(minCol.substring(5, 7), 16);
    var maxB = parseInt(maxCol.substring(5, 7), 16);
    var valsRange = maxVal - minVal;
    var rangeG = maxG - minG;
    var rangeR = maxR - minR;
    var rangeB = maxB - minB;
    if (val > maxVal)
      val = maxVal;
    else if (val < minVal)
      val = minVal;

    color = '#'
      + getRBGComponent(rangeR, minR, valsRange, minVal, val)
      + getRBGComponent(rangeG, minG, valsRange, minVal, val)
      + getRBGComponent(rangeB, minB, valsRange, minVal, val);
    return color;
  }

    function describeArc(x, y, radius, startAngle, endAngle) {
      if (endAngle > 288) {
        endAngle = 288;
      }
      // Auf volle Grad runden: bei Radius 95 ist ein Grad rund 1,7 Einheiten,
      // feiner sieht niemand. Dafuer bleibt das d-Attribut bei kleinen
      // Schwankungen unveraendert und setAttr unterdrueckt den Schreibvorgang -
      // sonst laesst jeder Zappler den Bogen samt Filter neu zeichnen.
      startAngle = Math.round(startAngle);
      endAngle = Math.round(endAngle);
      var start = polarToCartesian(x, y, radius, endAngle);
      var end = polarToCartesian(x, y, radius, startAngle);
      var largeArcFlag = endAngle - startAngle <= 180 ? "0" : "1";
      // zwei Nachkommastellen genuegen und halten das Attribut kurz
      var rnd = (v) => Math.round(v * 100) / 100;
      return [
        "M", rnd(start.x), rnd(start.y),
        "A", radius, radius, 0, largeArcFlag, 0, rnd(end.x), rnd(end.y)
      ].join(" ");
    }