Add data_visualization/js/app.js
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data_visualization/js/app.js
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86
data_visualization/js/app.js
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import { getData, getImages } from './api.js';
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import { renderCharts, updateCharts } from './charts.js';
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import { renderGallery, updateGallery } from './gallery.js';
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/**
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* Initialisiert die Applikation nach dem Fenster-Load-Ereignis.
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* Lädt Umweltdaten und Bilddaten, initialisiert Diagramme und Gallerie.
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*/
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export async function initApp() {
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try {
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const [dataResponse, imageResponse] = await Promise.all([
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getData(),
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getImages()
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]);
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if (Array.isArray(dataResponse)) {
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renderCharts(dataResponse);
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}
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if (Array.isArray(imageResponse)) {
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renderGallery(imageResponse);
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}
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setupFilterListeners();
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setupAutoRefresh();
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} catch (err) {
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console.error('Fehler bei der Initialisierung der App:', err);
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}
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}
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/**
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* Aktualisiert die Datenanzeige bei Änderungen der Filter oder bei Auto-Refresh.
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* @param {Object} filters - Zeitbereich und Sensorfilter.
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*/
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export async function refreshData(filters = {}) {
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try {
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const updatedData = await getData(filters);
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if (Array.isArray(updatedData)) {
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updateCharts(updatedData);
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}
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} catch (err) {
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console.error('Fehler beim Aktualisieren der Daten:', err);
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}
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}
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/**
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* Setzt Event-Listener für UI-Filter.
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* Filter senden z. B. Zeitraum- und Sensorparameter an refreshData().
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*/
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function setupFilterListeners() {
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const filterForm = document.querySelector('#filter-form');
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if (!filterForm) return;
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filterForm.addEventListener('change', async () => {
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const formData = new FormData(filterForm);
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const filters = {
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time_range: formData.get('time_range') || null,
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sensor_id: formData.get('sensor_id') || null
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};
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await refreshData(filters);
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try {
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const updatedImages = await getImages({
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start_time: filters.time_range?.split(',')[0] || null,
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end_time: filters.time_range?.split(',')[1] || null
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});
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if (Array.isArray(updatedImages)) {
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updateGallery(updatedImages);
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}
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} catch (e) {
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console.error('Fehler beim Aktualisieren der Bilder:', e);
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}
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});
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}
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/**
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* Setzt einen automatischen Refresh der Daten in regelmäßigen Abständen.
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*/
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function setupAutoRefresh() {
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const REFRESH_INTERVAL = 60000; // 1 Minute
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setInterval(() => {
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refreshData();
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}, REFRESH_INTERVAL);
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}
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// Initialisierung beim Laden des Fensters
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window.addEventListener('load', initApp);
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