Add data_visualization/js/api.js
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data_visualization/js/api.js
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44
data_visualization/js/api.js
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/**
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* @module api
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* Kommuniziert mit der Backend-Route /data und liefert Messdaten.
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* @description Dieses Modul stellt Funktionen zum Abrufen der Sensordaten bereit.
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*/
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/**
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* Holt Sensorwerte (Temperatur, Luftfeuchtigkeit, Licht) von der API.
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* @async
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* @function fetchSensorData
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* @returns {Promise<Array<{timestamp: string, location_id: string, temperature: number, humidity: number, light: number}>>} Messdaten-Array
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* @throws {Error} Wenn der Abruf fehlschlägt oder die Antwort ungültig ist.
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*/
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export async function fetchSensorData() {
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try {
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const response = await fetch('/data', {
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method: 'GET',
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headers: {
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'Accept': 'application/json'
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}
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});
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if (!response.ok) {
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throw new Error(`API request failed with status ${response.status}`);
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}
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const data = await response.json();
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if (!Array.isArray(data)) {
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throw new Error('Invalid API response: expected an array.');
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}
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return data.map(item => ({
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timestamp: item.timestamp ?? '',
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location_id: item.location_id ?? '',
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temperature: typeof item.temperature === 'number' ? item.temperature : null,
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humidity: typeof item.humidity === 'number' ? item.humidity : null,
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light: typeof item.light === 'number' ? item.light : null
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}));
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} catch (error) {
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console.error('Fehler beim Abrufen der Sensordaten:', error);
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throw error;
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}
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}
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