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vault171/app/javascript/controllers/scanner_controller.js
David Böhm e161582c4a
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Import qr-scanner the rails way.
2026-05-27 02:18:24 +02:00

60 lines
1.7 KiB
JavaScript

import { Controller } from "@hotwired/stimulus";
//import QrScanner from "qr-scanner"; // Rails findet jetzt über die Importmap deine Datei unter vendor/javascript/
// KORREKTUR: Lädt das Modul ohne Namens-Zuweisung, da die Legacy-Datei keinen Default-Export besitzt
import "qr-scanner";
export default class extends Controller {
static targets = ["input", "preview", "modal"];
connect() {
this.qrScanner = null;
}
startCamera(event) {
event.preventDefault();
this.modalTarget.classList.remove("hidden");
const videoElement = this.previewTarget;
// Scanner initialisieren (Direkt über die importierte Klasse ohne 'window.')
//this.qrScanner = new QrScanner(
// Greift jetzt absolut fehlerfrei auf die geladene Klasse zu
this.qrScanner = new window.QrScanner(
videoElement,
(result) => { this.handleScanSuccess(result.data); },
{
onDecodeError: (error) => { /* Fehler ignorieren */ },
highlightScanRegion: true,
highlightCodeOutline: true,
maxScansPerSecond: 10
}
);
this.qrScanner.start().catch((err) => {
alert("Kamera-Zugriff blockiert! Bitte prüfe die Browser-Berechtigungen.");
console.error("Kamera-Fehler:", err);
this.modalTarget.classList.add("hidden");
});
}
handleScanSuccess(decodedText) {
this.inputTarget.value = decodedText;
this.inputTarget.dispatchEvent(new Event("input", { bubbles: true }));
this.stopCamera();
}
stopCamera() {
if (this.qrScanner) {
this.qrScanner.stop();
this.qrScanner.destroy();
this.qrScanner = null;
}
this.modalTarget.classList.add("hidden");
}
disconnect() {
this.stopCamera();
}
}