@MCU sagte:

Man kann es auch so machen,. dass man die DPs (vordefiniert im DP als Array) im Diagramm auswählen kann und dann die Diagramme angezeigt werden zum DP.

Das klingt für die Zukunft sehr interessant. Erstmal komme ich klar für das was mir im Moment vorschwebt. Ich habe noch ein anders Diagramm angelegt und in ein VIS 1 eingebaut, schaut ganz gut aus, denke ich 😀

Ich melde mich wieder wenn ich weitere Unterstützung benötige.

Man kann das Programm auch anpassen für mehrere DPs und andere Optionen. man muss halt wissen, was du, wie brauchst.

Man kann es auch so machen,. dass man die DPs (vordefiniert im DP als Array) im Diagramm auswählen kann und dann die Diagramme angezeigt werden zum DP.

Im DP 0_userdata.0.flexCharts.compareDays.historyInstance gibst du die Instanz ein, mit der du die History speicherst. also history.0 oder sql.0 oder influxdb.0

Im DP 0_userdata.0.flexCharts.compareDays.urlBase musst du die ioBroker-Server-IP und den Port evtl anpassen. (http / https Protocoll)?

Im DP 0_userdata.0.flexCharts.compareDays.compareDays gibst du kommagetrennt an, welche Tage du mit heute vergleichen willst. Gestern -> 1, vorgestern -> 2 usw.
willst du mehrere Kurven sehen, dann 1,2,3 usw.

Wenn das alles passt hast du im DP 0_userdata.0.flexCharts.compareDays.generatedUrl jetzt eine URL die du direkt im Browser nutzen kannst oder als iFrame-Url nutzt.

javascript.0	11:17:31.101	info	
Stopping script
javascript.0	11:17:31.109	info	
start JavaScript (Javascript/js)
javascript.0	11:17:31.114	info	
flexCharts Compare24Times gestartet. messageName=puffervergleich
javascript.0	11:17:31.114	info	
registered 7 subscriptions, 0 schedules, 1 message, 0 logs and 0 file subscriptions

log(`registered....

Diese löschen.
Am Besten das Skript neu laden.
https://mcuiobroker.gitbook.io/iobroker-tipps/tipps/scripte-blockly-javascript/flexcharts/beispiel-comparedays/javascript-comparedays

javascript.0	10:49:06.505	info	
Stopping script
javascript.0	10:49:06.512	info	
start JavaScript (Javascript/js)
javascript.0	10:49:06.515	error	
compile failed at: script.js.common.Echarts.javascript_compareDays:1207
javascript.0	10:49:06.515	error	
log(`registered ${__engine.__subscriptions} subscription${__engine.__subscriptions === 1 ? '' : 's'}, ${__engine.__schedules} schedule${__engine.__schedules === 1 ? '' : 's'}, ${__engine.__subscriptionsMessage} message${__engine.__subscriptionsMessage === 1 ? '' : 's'}, ${__engine.__subscriptionsLog} log${__engine.__subscriptionsLog === 1 ? '' : 's'} and ${__engine.__subscriptionsFile} file subscription${__engine.__subscriptionsFile === 1 ? '' : 's'}`);
javascript.0	10:49:06.515	error	
     ^^^^^^^^^^
javascript.0	10:49:06.515	error	
SyntaxError: Unexpected identifier 'registered'
javascript.0	10:49:06.515	error	
    at new Script (node:vm:117:7)
javascript.0	10:49:06.516	error	
    at JavaScript.createVM (/opt/iobroker/node_modules/iobroker.javascript/src/main.ts:2179:25)
javascript.0	10:49:06.516	error	
    at JavaScript.prepareScript (/opt/iobroker/node_modules/iobroker.javascript/src/main.ts:2481:44)
javascript.0	10:49:06.516	error	
    at processTicksAndRejections (node:internal/process/task_queues:103:5)

PS: Danke auch an @paul53 fürs mit schauen.

@MCU [sagte]: Im Ordner Allgemeine Skripte darf nur etwas stehen , was alle Skripte nutzen.

Nein, das trifft nur auf den Ordner "Globale Skripte (global)" zu.
Unter "Allgemeine Skripte" können beliebige Skripte stehen.

Du musst einen Ordner nicht im Allgemeine Scripte erstellen.

Im Skript selbst darf kein # stehen.

# javascript compareDays

## javascript compareDays

```js
/***************************************************************
 * compareDays v1.0.0 
 * Copyright ©MCU
 ***************************************************************/

const CONFIG_BASE = '0_userdata.0.flexCharts.Compare24Times';

const DEFAULT_CURRENT_STYLE = {
    type: 'line',
    color: '',
    lineStyle: 'solid',
    lineWidth: 2,
    area: false,
    smooth: false,
    symbol: 'none'
};

const DEFAULT_COMPARE_STYLE = {
    type: 'line',
    color: '',
    lineStyle: 'solid',
    lineWidth: 2,
    area: false,
    smooth: false,
    symbol: 'none'
};

const DEFAULT_DELTA_STYLE = {
    type: 'bar',
    color: '',
    lineStyle: 'solid',
    lineWidth: 1,
    area: false,
    smooth: false,
    symbol: 'none',
    yAxisIndex: 1
};

const DEFAULT_COMPARE_DAYS = [1, 2, 3];

const DEFAULTS = {
    messageName: 'puffervergleich',
    historyInstance: 'history.0',
    dpId: '',
    windowHours: 24,
    compareDays: DEFAULT_COMPARE_DAYS.join(','),
    maxCount: 2000,
    fallbackUnit: '°C',
    chartTitle: 'Pufferspeicher: aktuell vs. Vortage',
    valueName: 'Temperatur',
    urlBase: 'http://192.168.178.150:8082/flexcharts/echarts.html',
    urlRefresh: 60,
    generatedUrl: '',
    deltaEnabled: false,
    deltaSourceA: 'current',
    deltaSourceB: 'day1',
    deltaAreaEnabled: false,
    deltaSmooth: false,
    seriesConfig: JSON.stringify(buildDefaultSeriesConfigObject(DEFAULT_COMPARE_DAYS), null, 2)
};

let restartPending = false;
let syncPending = false;

start();

function start() {
    ensureConfigStates(() => {
        refreshDeltaSourceStates();
        synchronizeSeriesConfigState();
        updateGeneratedUrl();

        const config = readConfig();
        log('flexCharts Compare24Times gestartet. messageName=' + config.messageName, 'info');

        onMessage(config.messageName, (httpParams, callback) => {
            createComparisonChart(callback);
        });

        on({ id: CONFIG_BASE + '.compareDays', ack: false, change: 'ne' }, () => {
            refreshDeltaSourceStates();
            synchronizeSeriesConfigState();
            updateGeneratedUrl();
        });

        on({ id: CONFIG_BASE + '.seriesConfig', ack: false, change: 'ne' }, () => {
            synchronizeSeriesConfigState();
        });

        on({ id: CONFIG_BASE + '.deltaSourceA', ack: false, change: 'ne' }, () => {
            refreshDeltaSourceStates();
        });

        on({ id: CONFIG_BASE + '.deltaSourceB', ack: false, change: 'ne' }, () => {
            refreshDeltaSourceStates();
        });

        on({ id: CONFIG_BASE + '.urlBase', ack: false, change: 'ne' }, () => {
            updateGeneratedUrl();
        });

        on({ id: CONFIG_BASE + '.urlRefresh', ack: false, change: 'ne' }, () => {
            updateGeneratedUrl();
        });

        on({ id: CONFIG_BASE + '.messageName', ack: false, change: 'ne' }, obj => {
            if (restartPending) return;

            const newValue = obj && obj.state ? String(obj.state.val || '').trim() : '';
            updateGeneratedUrl();

            if (!newValue) {
                log('messageName ist leer, Script wird nicht neu gestartet', 'warn');
                return;
            }

            restartPending = true;
            log('messageName geändert auf "' + newValue + '" -> Script wird neu gestartet', 'info');

            setTimeout(() => {
                runScript(scriptName);
            }, 200);
        });
    });
}

function ensureConfigStates(done) {
    const defs = [
        {
            key: 'messageName',
            def: DEFAULTS.messageName,
            common: {
                name: 'flexCharts Message-Name',
                type: 'string',
                role: 'text',
                read: true,
                write: true
            }
        },
        {
            key: 'historyInstance',
            def: DEFAULTS.historyInstance,
            common: {
                name: 'History-Instanz',
                type: 'string',
                role: 'text',
                read: true,
                write: true
            }
        },
        {
            key: 'dpId',
            def: DEFAULTS.dpId,
            common: {
                name: 'Datenpunkt-ID',
                type: 'string',
                role: 'text',
                read: true,
                write: true
            }
        },
        {
            key: 'windowHours',
            def: DEFAULTS.windowHours,
            common: {
                name: 'Sichtbarer Zeitraum in Stunden',
                type: 'number',
                role: 'value',
                read: true,
                write: true
            }
        },
        {
            key: 'compareDays',
            def: DEFAULTS.compareDays,
            common: {
                name: 'Vergleichstage, z.B. 1,2,3',
                type: 'string',
                role: 'text',
                read: true,
                write: true
            }
        },
        {
            key: 'maxCount',
            def: DEFAULTS.maxCount,
            common: {
                name: 'Maximale Anzahl History-Werte',
                type: 'number',
                role: 'value',
                read: true,
                write: true
            }
        },
        {
            key: 'fallbackUnit',
            def: DEFAULTS.fallbackUnit,
            common: {
                name: 'Fallback-Einheit',
                type: 'string',
                role: 'text',
                read: true,
                write: true
            }
        },
        {
            key: 'chartTitle',
            def: DEFAULTS.chartTitle,
            common: {
                name: 'Chart-Titel',
                type: 'string',
                role: 'text',
                read: true,
                write: true
            }
        },
        {
            key: 'valueName',
            def: DEFAULTS.valueName,
            common: {
                name: 'Name der Messgröße',
                type: 'string',
                role: 'text',
                read: true,
                write: true
            }
        },
        {
            key: 'urlBase',
            def: DEFAULTS.urlBase,
            common: {
                name: 'Basis-URL für flexCharts',
                type: 'string',
                role: 'text',
                read: true,
                write: true
            }
        },
        {
            key: 'urlRefresh',
            def: DEFAULTS.urlRefresh,
            common: {
                name: 'Refresh in Sekunden',
                type: 'number',
                role: 'value',
                read: true,
                write: true
            }
        },
        {
            key: 'generatedUrl',
            def: DEFAULTS.generatedUrl,
            common: {
                name: 'Generierte flexCharts-URL',
                type: 'string',
                role: 'text',
                read: true,
                write: false
            }
        },
        {
            key: 'deltaEnabled',
            def: DEFAULTS.deltaEnabled,
            common: {
                name: 'Delta aktiv',
                type: 'boolean',
                role: 'switch.enable',
                read: true,
                write: true
            }
        },
        {
            key: 'deltaSourceA',
            def: DEFAULTS.deltaSourceA,
            common: {
                name: 'Delta Quelle A',
                type: 'string',
                role: 'text',
                read: true,
                write: true
            }
        },
        {
            key: 'deltaSourceB',
            def: DEFAULTS.deltaSourceB,
            common: {
                name: 'Delta Quelle B',
                type: 'string',
                role: 'text',
                read: true,
                write: true
            }
        },
        {
            key: 'deltaAreaEnabled',
            def: DEFAULTS.deltaAreaEnabled,
            common: {
                name: 'Delta als Fläche',
                type: 'boolean',
                role: 'switch.enable',
                read: true,
                write: true
            }
        },
        {
            key: 'deltaSmooth',
            def: DEFAULTS.deltaSmooth,
            common: {
                name: 'Delta geglättet',
                type: 'boolean',
                role: 'switch.enable',
                read: true,
                write: true
            }
        },
        {
            key: 'seriesConfig',
            def: DEFAULTS.seriesConfig,
            common: {
                name: 'Serien-Konfiguration als JSON',
                type: 'string',
                role: 'json',
                read: true,
                write: true
            }
        }
    ];

    let index = 0;

    function next() {
        if (index >= defs.length) {
            done();
            return;
        }

        const item = defs[index++];
        const id = CONFIG_BASE + '.' + item.key;

        if (existsState(id)) {
            next();
            return;
        }

        createState(id, item.def, false, item.common, {}, () => {
            next();
        });
    }

    next();
}

function refreshDeltaSourceStates() {
    const compareDays = parseCompareDays(readString(CONFIG_BASE + '.compareDays', DEFAULTS.compareDays));
    const statesMap = buildDeltaSourceStatesMap(compareDays);

    try {
        extendObject(CONFIG_BASE + '.deltaSourceA', {
            common: {
                states: statesMap
            }
        });
    } catch (e) {
        log('deltaSourceA common.states konnte nicht aktualisiert werden: ' + e.message, 'warn');
    }

    try {
        extendObject(CONFIG_BASE + '.deltaSourceB', {
            common: {
                states: statesMap
            }
        });
    } catch (e) {
        log('deltaSourceB common.states konnte nicht aktualisiert werden: ' + e.message, 'warn');
    }

    ensureValidDeltaSources(statesMap, compareDays);
}

function buildDeltaSourceStatesMap(compareDays) {
    const map = {
        current: 'Aktuell'
    };

    for (let i = 0; i < compareDays.length; i++) {
        const day = compareDays[i];
        map['day' + day] = 'Vor ' + day + ' Tag' + (day > 1 ? 'en' : '');
    }

    return map;
}

function ensureValidDeltaSources(statesMap, compareDays) {
    const validKeys = Object.keys(statesMap);

    let sourceA = normalizeSeriesRef(readString(CONFIG_BASE + '.deltaSourceA', DEFAULTS.deltaSourceA));
    let sourceB = normalizeSeriesRef(readString(CONFIG_BASE + '.deltaSourceB', DEFAULTS.deltaSourceB));

    if (!validKeys.includes(sourceA)) {
        sourceA = 'current';
        setState(CONFIG_BASE + '.deltaSourceA', sourceA, true);
    }

    if (!validKeys.includes(sourceB)) {
        sourceB = compareDays.length ? ('day' + compareDays[0]) : 'current';
        setState(CONFIG_BASE + '.deltaSourceB', sourceB, true);
    }

    if (sourceA === sourceB) {
        if (sourceA !== 'current') {
            sourceA = 'current';
            setState(CONFIG_BASE + '.deltaSourceA', sourceA, true);
        } else if (compareDays.length) {
            sourceB = 'day' + compareDays[0];
            setState(CONFIG_BASE + '.deltaSourceB', sourceB, true);
        }
    }
}

function synchronizeSeriesConfigState() {
    if (syncPending) return;
    syncPending = true;

    setTimeout(() => {
        try {
            const compareDays = parseCompareDays(readString(CONFIG_BASE + '.compareDays', DEFAULTS.compareDays));
            const currentConfig = readSeriesConfig(compareDays);
            saveSeriesConfigIfChanged(currentConfig);
        } finally {
            syncPending = false;
        }
    }, 50);
}

function readConfig() {
    const compareDays = parseCompareDays(readString(CONFIG_BASE + '.compareDays', DEFAULTS.compareDays));
    const seriesConfig = readSeriesConfig(compareDays);

    return {
        messageName: readString(CONFIG_BASE + '.messageName', DEFAULTS.messageName),
        historyInstance: readString(CONFIG_BASE + '.historyInstance', DEFAULTS.historyInstance),
        dpId: readString(CONFIG_BASE + '.dpId', DEFAULTS.dpId),
        windowHours: Math.max(1, readNumber(CONFIG_BASE + '.windowHours', DEFAULTS.windowHours)),
        compareDays: compareDays,
        maxCount: Math.max(100, readNumber(CONFIG_BASE + '.maxCount', DEFAULTS.maxCount)),
        fallbackUnit: readString(CONFIG_BASE + '.fallbackUnit', DEFAULTS.fallbackUnit),
        chartTitle: readString(CONFIG_BASE + '.chartTitle', DEFAULTS.chartTitle),
        valueName: readString(CONFIG_BASE + '.valueName', DEFAULTS.valueName),
        urlBase: readString(CONFIG_BASE + '.urlBase', DEFAULTS.urlBase),
        urlRefresh: Math.max(0, readNumber(CONFIG_BASE + '.urlRefresh', DEFAULTS.urlRefresh)),
        deltaEnabled: readBoolean(CONFIG_BASE + '.deltaEnabled', DEFAULTS.deltaEnabled),
        deltaSourceA: normalizeSeriesRef(readString(CONFIG_BASE + '.deltaSourceA', DEFAULTS.deltaSourceA)),
        deltaSourceB: normalizeSeriesRef(readString(CONFIG_BASE + '.deltaSourceB', DEFAULTS.deltaSourceB)),
        deltaAreaEnabled: readBoolean(CONFIG_BASE + '.deltaAreaEnabled', DEFAULTS.deltaAreaEnabled),
        deltaSmooth: readBoolean(CONFIG_BASE + '.deltaSmooth', DEFAULTS.deltaSmooth),
        seriesConfig: seriesConfig
    };
}

function readSeriesConfig(compareDays) {
    const id = CONFIG_BASE + '.seriesConfig';
    const fallbackRaw = JSON.stringify(buildDefaultSeriesConfigObject(compareDays), null, 2);
    const raw = readString(id, fallbackRaw);

    let parsed;
    try {
        parsed = JSON.parse(raw);
    } catch (e) {
        log('seriesConfig JSON ungültig, setze Default zurück: ' + e.message, 'warn');
        parsed = buildDefaultSeriesConfigObject(compareDays);
        setState(id, JSON.stringify(parsed, null, 2), true);
    }

    const normalized = normalizeSeriesConfig(parsed);
    const synced = syncStoredSeriesConfigWithCompareDays(normalized, compareDays);

    return synced;
}

function syncStoredSeriesConfigWithCompareDays(cfg, compareDays) {
    const result = cloneJson(cfg);

    if (!result.compareByDay || typeof result.compareByDay !== 'object') {
        result.compareByDay = {};
    }

    const compareDefault = normalizeSeriesStyle(result.compareDefault, DEFAULT_COMPARE_STYLE);
    const validDayMap = {};

    for (let i = 0; i < compareDays.length; i++) {
        const dayKey = String(compareDays[i]);
        validDayMap[dayKey] = true;

        if (!result.compareByDay[dayKey] || typeof result.compareByDay[dayKey] !== 'object') {
            result.compareByDay[dayKey] = cloneJson(compareDefault);
        }
    }

    Object.keys(result.compareByDay).forEach(dayKey => {
        if (validDayMap[dayKey]) {
            return;
        }

        const entry = normalizeSeriesStyle(result.compareByDay[dayKey], compareDefault);

        if (isJsonEqual(entry, compareDefault)) {
            delete result.compareByDay[dayKey];
        }
    });

    if (!result.delta || typeof result.delta !== 'object') {
        result.delta = buildDefaultDeltaStyleConfig();
    }

    return normalizeSeriesConfig(result);
}

function saveSeriesConfigIfChanged(seriesConfig) {
    const id = CONFIG_BASE + '.seriesConfig';
    const currentRaw = readString(id, DEFAULTS.seriesConfig);
    const nextRaw = JSON.stringify(seriesConfig, null, 2);

    if (normalizeJsonString(currentRaw) !== normalizeJsonString(nextRaw)) {
        setState(id, nextRaw, true);
    }
}

function updateGeneratedUrl() {
    const messageName = readString(CONFIG_BASE + '.messageName', DEFAULTS.messageName);
    const urlBase = readString(CONFIG_BASE + '.urlBase', DEFAULTS.urlBase);
    const urlRefresh = Math.max(0, readNumber(CONFIG_BASE + '.urlRefresh', DEFAULTS.urlRefresh));

    const url = buildFlexUrl(urlBase, messageName, urlRefresh);
    const id = CONFIG_BASE + '.generatedUrl';
    const current = readString(id, '');

    if (current !== url) {
        setState(id, url, true);
    }
}

function buildFlexUrl(baseUrl, messageName, refreshSeconds) {
    const base = String(baseUrl || '').trim();
    const msg = String(messageName || '').trim();
    const refresh = Number(refreshSeconds);

    if (!base || !msg) {
        return '';
    }

    const separator = base.includes('?') ? '&' : '?';
    let url = base + separator + 'source=script&message=' + encodeURIComponent(msg);

    if (Number.isFinite(refresh) && refresh > 0) {
        url += '&refresh=' + encodeURIComponent(String(refresh));
    }

    return url;
}

function normalizeSeriesConfig(cfg) {
    const result = (cfg && typeof cfg === 'object') ? cloneJson(cfg) : {};

    result.current = normalizeSeriesStyle(result.current, DEFAULT_CURRENT_STYLE);
    result.compareDefault = normalizeSeriesStyle(result.compareDefault, DEFAULT_COMPARE_STYLE);

    if (!result.compareByDay || typeof result.compareByDay !== 'object') {
        result.compareByDay = {};
    }

    Object.keys(result.compareByDay).forEach(day => {
        result.compareByDay[day] = normalizeSeriesStyle(result.compareByDay[day], result.compareDefault);
    });

    result.delta = normalizeDeltaStyle(result.delta, DEFAULT_DELTA_STYLE);

    return result;
}

function normalizeSeriesStyle(style, defaults) {
    const src = (style && typeof style === 'object') ? style : {};
    const def = defaults || {};

    return {
        type: normalizeSeriesType(src.type !== undefined ? src.type : def.type),
        color: String(src.color !== undefined ? src.color : def.color || '').trim(),
        lineStyle: normalizeLineStyle(src.lineStyle !== undefined ? src.lineStyle : def.lineStyle),
        lineWidth: Math.max(1, toNumber(src.lineWidth, def.lineWidth || 2)),
        area: toBoolean(src.area, !!def.area),
        smooth: toBoolean(src.smooth, !!def.smooth),
        symbol: normalizeSymbol(src.symbol !== undefined ? src.symbol : def.symbol)
    };
}

function normalizeDeltaStyle(style, defaults) {
    const src = (style && typeof style === 'object') ? style : {};
    const def = defaults || DEFAULT_DELTA_STYLE;

    const base = normalizeSeriesStyle(src, def);
    base.yAxisIndex = Math.max(0, parseInt(toNumber(src.yAxisIndex, def.yAxisIndex || 1), 10));

    return base;
}

function normalizeSeriesType(type) {
    const t = String(type || '').trim().toLowerCase();
    if (t === 'line' || t === 'bar' || t === 'scatter') {
        return t;
    }
    return 'line';
}

function normalizeLineStyle(style) {
    const s = String(style || '').trim().toLowerCase();
    if (s === 'solid' || s === 'dashed' || s === 'dotted') {
        return s;
    }
    return 'solid';
}

function normalizeSymbol(symbol) {
    const raw = String(symbol || '').trim();
    const lower = raw.toLowerCase();

    if (!raw || lower === 'none') {
        return 'none';
    }

    const allowed = {
        circle: 'circle',
        rect: 'rect',
        roundrect: 'roundRect',
        roundRect: 'roundRect',
        triangle: 'triangle',
        diamond: 'diamond',
        pin: 'pin',
        arrow: 'arrow'
    };

    return allowed[raw] || allowed[lower] || 'none';
}

function normalizeSeriesRef(ref) {
    const r = String(ref || '').trim().toLowerCase();

    if (r === 'current') {
        return 'current';
    }

    const m = r.match(/^day(\d+)$/);
    if (m) {
        return 'day' + parseInt(m[1], 10);
    }

    return 'current';
}

function buildDefaultSeriesConfigObject(compareDays) {
    const compareByDay = {};
    const days = Array.isArray(compareDays) && compareDays.length ? compareDays : DEFAULT_COMPARE_DAYS;

    for (let i = 0; i < days.length; i++) {
        compareByDay[String(days[i])] = cloneJson(DEFAULT_COMPARE_STYLE);
    }

    return {
        current: cloneJson(DEFAULT_CURRENT_STYLE),
        compareDefault: cloneJson(DEFAULT_COMPARE_STYLE),
        compareByDay: compareByDay,
        delta: buildDefaultDeltaStyleConfig()
    };
}

function buildDefaultDeltaStyleConfig() {
    return {
        type: DEFAULT_DELTA_STYLE.type,
        color: DEFAULT_DELTA_STYLE.color,
        lineStyle: DEFAULT_DELTA_STYLE.lineStyle,
        lineWidth: DEFAULT_DELTA_STYLE.lineWidth,
        area: DEFAULT_DELTA_STYLE.area,
        smooth: DEFAULT_DELTA_STYLE.smooth,
        symbol: DEFAULT_DELTA_STYLE.symbol,
        yAxisIndex: DEFAULT_DELTA_STYLE.yAxisIndex
    };
}

function isJsonEqual(a, b) {
    return normalizeJsonString(JSON.stringify(a)) === normalizeJsonString(JSON.stringify(b));
}

function normalizeJsonString(value) {
    try {
        return JSON.stringify(JSON.parse(String(value || '')));
    } catch (e) {
        return String(value || '').trim();
    }
}

function cloneJson(obj) {
    try {
        return JSON.parse(JSON.stringify(obj || {}));
    } catch (e) {
        return {};
    }
}

function toNumber(value, fallback) {
    const n = Number(value);
    return Number.isFinite(n) ? n : Number(fallback);
}

function toBoolean(value, fallback) {
    if (value === true || value === false) {
        return value;
    }

    if (typeof value === 'string') {
        const v = value.trim().toLowerCase();
        if (v === 'true' || v === '1' || v === 'yes' || v === 'on') return true;
        if (v === 'false' || v === '0' || v === 'no' || v === 'off') return false;
    }

    if (typeof value === 'number') {
        return value !== 0;
    }

    return !!fallback;
}

function readString(id, fallback) {
    try {
        if (!existsState(id)) return fallback;
        const state = getState(id);
        if (!state || state.val === null || state.val === undefined) return fallback;
        const value = String(state.val).trim();
        return value !== '' ? value : fallback;
    } catch (e) {
        return fallback;
    }
}

function readNumber(id, fallback) {
    try {
        if (!existsState(id)) return fallback;
        const state = getState(id);
        if (!state || state.val === null || state.val === undefined) return fallback;
        const value = Number(state.val);
        return Number.isFinite(value) ? value : fallback;
    } catch (e) {
        return fallback;
    }
}

function readBoolean(id, fallback) {
    try {
        if (!existsState(id)) return fallback;
        const state = getState(id);
        if (!state || state.val === null || state.val === undefined) return fallback;
        return toBoolean(state.val, fallback);
    } catch (e) {
        return fallback;
    }
}

function parseCompareDays(value) {
    const result = [];
    const used = {};

    String(value || '')
        .split(',')
        .map(s => parseInt(String(s).trim(), 10))
        .forEach(n => {
            if (Number.isFinite(n) && n > 0 && !used[n]) {
                used[n] = true;
                result.push(n);
            }
        });

    result.sort((a, b) => a - b);

    if (!result.length) {
        return [1];
    }

    return result;
}

function createComparisonChart(callback) {
    const config = readConfig();

    saveSeriesConfigIfChanged(config.seriesConfig);
    updateGeneratedUrl();

    const now = Date.now();
    const windowMs = config.windowHours * 60 * 60 * 1000;

    const startCurrent = now - windowMs;
    const endCurrent = now;

    const unit = getUnitFromObject(config.dpId) || config.fallbackUnit;

    getHistorySeries(
        config.historyInstance,
        config.dpId,
        startCurrent,
        endCurrent,
        config.maxCount,
        (errCurrent, currentSeries) => {
            if (errCurrent) {
                callback(createErrorOption('Fehler beim Laden der aktuellen History: ' + stringifyError(errCurrent)));
                return;
            }

            loadComparisonSeries(
                config.historyInstance,
                config.dpId,
                startCurrent,
                endCurrent,
                config.compareDays,
                config.maxCount,
                (errCompare, compareSeriesList) => {
                    if (errCompare) {
                        callback(createErrorOption('Fehler beim Laden der Vergleichs-History: ' + stringifyError(errCompare)));
                        return;
                    }

                    const allSeries = [];

                    allSeries.push(buildSeriesObject(
                        'Aktuell',
                        currentSeries,
                        config.seriesConfig.current,
                        0
                    ));

                    for (let i = 0; i < compareSeriesList.length; i++) {
                        const item = compareSeriesList[i];
                        const dayStyle = config.seriesConfig.compareByDay[String(item.dayOffset)] || config.seriesConfig.compareDefault;

                        allSeries.push(buildSeriesObject(
                            'Vor ' + item.dayOffset + ' Tag' + (item.dayOffset > 1 ? 'en' : ''),
                            item.data,
                            dayStyle,
                            0
                        ));
                    }

                    const deltaBaseStyle = config.seriesConfig.delta;
                    let deltaData = [];

                    if (config.deltaEnabled && config.deltaSourceA !== config.deltaSourceB) {
                        const sourceAData = getSeriesDataByRef(config.deltaSourceA, currentSeries, compareSeriesList);
                        const sourceBData = getSeriesDataByRef(config.deltaSourceB, currentSeries, compareSeriesList);

                        if (sourceAData.length && sourceBData.length) {
                            deltaData = buildDeltaSeries(sourceAData, sourceBData);

                            if (deltaData.length) {
                                const effectiveDeltaStyle = cloneJson(deltaBaseStyle);

                                if (config.deltaAreaEnabled) {
                                    effectiveDeltaStyle.type = 'line';
                                    effectiveDeltaStyle.area = true;
                                }

                                effectiveDeltaStyle.smooth = !!config.deltaSmooth;

                                allSeries.push(buildSeriesObject(
                                    'Δ ' + getSeriesLabelByRef(config.deltaSourceA) + ' - ' + getSeriesLabelByRef(config.deltaSourceB),
                                    deltaData,
                                    effectiveDeltaStyle,
                                    effectiveDeltaStyle.yAxisIndex
                                ));
                            }
                        }
                    }

                    const yAxis = [
                        {
                            type: 'value',
                            name: config.valueName + ' [' + unit + ']',
                            scale: true,
                            axisLabel: {
                                formatter: '{value} ' + unit
                            }
                        }
                    ];

                    if (deltaData.length) {
                        yAxis.push({
                            type: 'value',
                            name: 'Δ [' + unit + ']',
                            scale: true,
                            axisLabel: {
                                formatter: '{value} ' + unit
                            }
                        });
                    }

                    const option = {
                        title: {
                            text: config.chartTitle,
                            left: 'center'
                        },
                        grid: {
                            left: 80,
                            right: 50,
                            top: 70,
                            bottom: 90
                        },
                        legend: {
                            top: 35
                        },
                        tooltip: {
                            trigger: 'axis',
                            axisPointer: {
                                type: 'cross'
                            }
                        },
                        toolbox: {
                            feature: {
                                dataZoom: { yAxisIndex: 'none' },
                                restore: {},
                                saveAsImage: {}
                            }
                        },
                        xAxis: {
                            type: 'time',
                            min: startCurrent,
                            max: endCurrent,
                            name: 'Zeit'
                        },
                        yAxis: yAxis,
                        dataZoom: [
                            {
                                type: 'inside',
                                start: 0,
                                end: 100
                            },
                            {
                                type: 'slider',
                                start: 0,
                                end: 100
                            }
                        ],
                        series: allSeries
                    };

                    callback(option);
                }
            );
        }
    );
}

function buildSeriesObject(name, data, style, yAxisIndex) {
    const series = {
        name: name,
        type: style.type,
        data: data,
        yAxisIndex: Number.isFinite(Number(yAxisIndex)) ? Number(yAxisIndex) : 0
    };

    if (style.type === 'line') {
        series.showSymbol = style.symbol !== 'none';
        series.symbol = style.symbol;
        series.smooth = !!style.smooth;
        series.connectNulls = false;
        series.lineStyle = {
            type: style.lineStyle,
            width: style.lineWidth
        };

        if (style.color) {
            series.lineStyle.color = style.color;
            series.itemStyle = { color: style.color };
        }

        if (style.area) {
            series.areaStyle = {};
        }
    }

    if (style.type === 'scatter') {
        series.symbol = style.symbol === 'none' ? 'circle' : style.symbol;
        if (style.color) {
            series.itemStyle = { color: style.color };
        }
    }

    if (style.type === 'bar') {
        if (style.color) {
            series.itemStyle = { color: style.color };
        }
    }

    return series;
}

function getSeriesDataByRef(ref, currentSeries, compareSeriesList) {
    if (ref === 'current') {
        return currentSeries;
    }

    const m = String(ref || '').match(/^day(\d+)$/);
    if (!m) {
        return [];
    }

    const day = parseInt(m[1], 10);
    const found = compareSeriesList.find(item => item.dayOffset === day);

    return found ? found.data : [];
}

function getSeriesLabelByRef(ref) {
    if (ref === 'current') {
        return 'Aktuell';
    }

    const m = String(ref || '').match(/^day(\d+)$/);
    if (!m) {
        return String(ref || '');
    }

    const day = parseInt(m[1], 10);
    return 'Vor ' + day + ' Tag' + (day > 1 ? 'en' : '');
}

/**
 * Delta-Berechnung über die Vereinigungsmenge aller Zeitstempel.
 * Dadurch wird die Abweichung auch dann am Anfang gezeigt,
 * wenn nur eine der beiden Kurven dort schon einen Punkt hat.
 */
function buildDeltaSeries(seriesA, seriesB) {
    if (!Array.isArray(seriesA) || !Array.isArray(seriesB) || !seriesA.length || !seriesB.length) {
        return [];
    }

    const a = seriesA
        .map(item => [Number(item[0]), Number(item[1])])
        .filter(item => Number.isFinite(item[0]) && Number.isFinite(item[1]))
        .sort((x, y) => x[0] - y[0]);

    const b = seriesB
        .map(item => [Number(item[0]), Number(item[1])])
        .filter(item => Number.isFinite(item[0]) && Number.isFinite(item[1]))
        .sort((x, y) => x[0] - y[0]);

    if (!a.length || !b.length) {
        return [];
    }

    const timestamps = Array.from(new Set(
        a.map(item => item[0]).concat(b.map(item => item[0]))
    )).sort((x, y) => x - y);

    let aIndex = 0;
    let bIndex = 0;
    let lastAVal = a[0][1];
    let lastBVal = b[0][1];

    const result = [];

    for (let i = 0; i < timestamps.length; i++) {
        const ts = timestamps[i];

        while (aIndex < a.length && a[aIndex][0] <= ts) {
            lastAVal = a[aIndex][1];
            aIndex++;
        }

        while (bIndex < b.length && b[bIndex][0] <= ts) {
            lastBVal = b[bIndex][1];
            bIndex++;
        }

        if (!Number.isFinite(lastAVal) || !Number.isFinite(lastBVal)) {
            continue;
        }

        result.push([ts, lastAVal - lastBVal]);
    }

    return result;
}

function loadComparisonSeries(historyInstance, dpId, startCurrent, endCurrent, compareDays, maxCount, cb) {
    const results = [];
    let index = 0;

    function next() {
        if (index >= compareDays.length) {
            cb(null, results);
            return;
        }

        const dayOffset = compareDays[index++];
        const shiftMs = dayOffset * 24 * 60 * 60 * 1000;

        const startPrevious = startCurrent - shiftMs;
        const endPrevious = endCurrent - shiftMs;

        getHistorySeries(historyInstance, dpId, startPrevious, endPrevious, maxCount, (err, previousSeriesRaw) => {
            if (err) {
                cb(err);
                return;
            }

            const shifted = previousSeriesRaw.map(item => [item[0] + shiftMs, item[1]]);

            results.push({
                dayOffset: dayOffset,
                data: shifted
            });

            next();
        });
    }

    next();
}

function getHistorySeries(historyInstance, dpId, start, end, maxCount, cb) {
    getHistory(historyInstance, {
        id: dpId,
        start: start,
        end: end,
        ack: true,
        count: maxCount,
        aggregate: 'none'
    }, (err, result) => {
        if (err) {
            cb(err);
            return;
        }

        const series = [];

        if (Array.isArray(result)) {
            for (let i = 0; i < result.length; i++) {
                const item = result[i];
                if (!item) continue;

                const ts = Number(item.ts);
                const val = Number(item.val);

                if (!Number.isFinite(ts) || !Number.isFinite(val)) {
                    continue;
                }

                series.push([ts, val]);
            }
        }

        cb(null, series);
    });
}

function getUnitFromObject(id) {
    try {
        const obj = getObject(id);
        if (
            obj &&
            obj.common &&
            typeof obj.common.unit === 'string' &&
            obj.common.unit.trim() !== ''
        ) {
            return obj.common.unit.trim();
        }
    } catch (e) {
        // nichts
    }
    return '';
}

function createErrorOption(message) {
    return {
        title: {
            text: 'Fehler',
            subtext: message,
            left: 'center',
            top: 'middle'
        },
        xAxis: {
            type: 'time'
        },
        yAxis: {
            type: 'value'
        },
        series: []
    };
}

function stringifyError(err) {
    try {
        return typeof err === 'string' ? err : JSON.stringify(err);
    } catch (e) {
        return String(err);
    }
}

javascript.0	09:10:59.227	info	
Stopping script
javascript.0	09:10:59.257	info	
start JavaScript (Javascript/js)
javascript.0	09:10:59.259	error	
compile failed at: script.js.common.Echarts.javascript_compareDays:2
javascript.0	09:10:59.261	error	
# javascript compareDays
javascript.0	09:10:59.264	error	
^
javascript.0	09:10:59.265	error	
SyntaxError: Invalid or unexpected token
javascript.0	09:10:59.265	error	
    at new Script (node:vm:117:7)
javascript.0	09:10:59.265	error	
    at JavaScript.createVM (/opt/iobroker/node_modules/iobroker.javascript/src/main.ts:2179:25)
javascript.0	09:10:59.265	error	
    at JavaScript.prepareScript (/opt/iobroker/node_modules/iobroker.javascript/src/main.ts:2481:44)
javascript.0	09:10:59.265	error	
    at processTicksAndRejections (node:internal/process/task_queues:103:5)

Ich habe allerdings mit javascript 0 Erfahrung, nur bisschen blockly.