mirror of
https://github.com/Part-DB/Part-DB-server.git
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135 lines
3.6 KiB
JavaScript
135 lines
3.6 KiB
JavaScript
import {Controller} from "@hotwired/stimulus";
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/**
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* This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
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*
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* Copyright (C) 2024 Alex Barclay (https://github.com/barclaac)
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published
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* by the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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/* stimulusFetch: 'lazy' */
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export default class extends Controller {
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_scanner = null;
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constructor() {
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super()
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_scanner = new ScannerSerial()
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}
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connect(event) {
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console.log('Controller connected')
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if (_scanner.isConnected()) {
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console.log('already connected')
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document.getElementById('handheld_scanner_dialog_connect').style.display='none'
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document.getElementById('handheld_scanner_dialog_disconnect').style.display=''
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}
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}
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async onConnectScanner(event) {
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console.log('Connect to barcode reader')
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if (!_scanner.isConnected()) {
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await _scanner.connect(async (reader) => {
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decoder = new TextDecoder();
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var barcodeBuffer = '';
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while (true) {
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const { value, done } = await reader.read();
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if (done) {
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console.log('releasing reader')
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reader.releaseLock();
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reader = null;
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break;
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}
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console.log(value);
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console.log(decoder.decode(value));
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partial = decoder.decode(value);
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barcodeBuffer += partial
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end = false
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endidx = partial.indexOf('\x1e\x04');
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if (endidx != -1) {
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end = true;
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} else {
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endidx = partial.indexOf('\r');
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if (endidx != -1) {
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end = true;
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}
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}
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if (end) {
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// Decode the barcode
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console.log(barcodeBuffer)
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start = barcodeBuffer.indexOf('[)>')
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if (start == -1) {
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console.log('badly formed barcode')
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} else {
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// Post this back to the server
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document.getElementById('handheld_scanner_dialog_barcode').value = barcodeBuffer;
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form = document.getElementById('handheld_dialog_form');
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form.requestSubmit();
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}
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barcodeBuffer = '';
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}
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}
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})
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document.getElementById('handheld_scanner_dialog_connect').style.display='none'
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document.getElementById('handheld_scanner_dialog_disconnect').style.display=''
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}
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}
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async onDisconnectScanner(event) {
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console.log('Disconnect called')
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if (_scanner.isConnected) {
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_scanner.disconnect()
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document.getElementById('handheld_scanner_dialog_connect').style.display=''
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document.getElementById('handheld_scanner_dialog_disconnect').style.display='none'
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}
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}
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}
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class ScannerSerial {
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device = null
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reader = null
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constructor() {
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if (ScannerSerial.instance) {
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return ScannerSerial.instance;
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}
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ScannerSerial.instance = this;
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}
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async connect(readHandler) {
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this.device = await navigator.serial.requestPort({ filters: [{ usbVendorId: 0x03f0, usbDeviceId: 0x0339 }] })
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await this.device.open({baudRate: 9600})
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console.log(this.device)
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this.reader = this.device.readable.getReader()
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readHandler(this.reader)
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}
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async disconnect() {
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await this.reader.cancel()
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this.reader = null
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this.device.close()
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}
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isConnected() {
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if (this.reader == null) {
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return false;
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}
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return true
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}
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}
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