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91 lines
2.8 KiB
JavaScript
91 lines
2.8 KiB
JavaScript
// export-service.js
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/**
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* Convierte un array de objetos JSON a formato CSV
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*/
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function convertToCSV(objArray) {
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const array = typeof objArray !== 'object' ? JSON.parse(objArray) : objArray;
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if (!Array.isArray(array) || array.length === 0) {
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throw new Error('No hay datos históricos disponibles para exportar.');
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}
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const headers = Object.keys(array[0]);
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const rows = array.map((item) =>
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headers.map((header) => escapeCsvValue(item[header])).join(',')
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);
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return [
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headers.map(escapeCsvValue).join(','),
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...rows
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].join('\r\n');
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}
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function escapeCsvValue(value) {
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const text = value == null ? '' : String(value);
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return `"${text.replace(/"/g, '""')}"`;
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}
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async function getEnabledSensorsForExport() {
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const response = await fetch('/api/config/runtime', { cache: 'no-store' });
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const config = await response.json();
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if (!response.ok || !Array.isArray(config.enabledSensors)) {
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throw new Error('No se pudo leer la configuracion de sensores.');
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}
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return new Set(config.enabledSensors);
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}
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function normalizeExportSensor(sensorType) {
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if (sensorType === 'rtd') return 'temperature';
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return sensorType;
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}
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async function assertSensorExportEnabled(sensorType) {
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if (sensorType === 'all') return;
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const enabledSensors = await getEnabledSensorsForExport();
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const sensorId = normalizeExportSensor(sensorType);
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if (!enabledSensors.has(sensorId)) {
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throw new Error(`El sensor ${sensorType.toUpperCase()} esta deshabilitado.`);
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}
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}
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/**
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* Manejador principal del evento click de los botones
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*/
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async function handleExport(sensorType) {
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try {
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await assertSensorExportEnabled(sensorType);
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// 1. Obtener datos (Mock actual, fetch real en el futuro)
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const data = await fetchHistoricalData(sensorType);
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// 2. Convertir a CSV
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const csvText = convertToCSV(data);
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// 3. Crear un Blob (Objeto de datos binarios)
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const blob = new Blob([csvText], { type: 'text/csv;charset=utf-8;' });
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// 4. Crear un enlace temporal para forzar la descarga en la laptop
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const link = document.createElement("a");
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const url = URL.createObjectURL(blob);
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link.setAttribute("href", url);
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link.setAttribute("download", `export_${sensorType}_${new Date().getTime()}.csv`);
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link.style.visibility = 'hidden';
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document.body.appendChild(link);
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link.click();
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document.body.removeChild(link);
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URL.revokeObjectURL(url);
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console.log(`[EXITO] Archivo CSV descargado para ${sensorType}`);
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} catch (error) {
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console.error("[ERROR] Fallo al exportar el CSV:", error);
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alert("Hubo un error al generar el archivo. Revisa la consola.");
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}
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}
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