diff --git a/index.php b/index.php
index 409580f..2b0b06b 100644
--- a/index.php
+++ b/index.php
@@ -6402,6 +6402,98 @@ $projectDescription = $_SERVER['PROJECT_DESCRIPTION'] ?? 'Accounting System';
this.items = this.items.filter(item => item.id !== id);
this.render();
},
+ setQty(id, qty) {
+ if (!this.items) return;
+ const item = this.items.find(i => i.id === id);
+ if (item) {
+ const allowZeroStock = (typeof companySettings !== 'undefined' && String(companySettings.allow_zero_stock_sell) === '1');
+ const currentStock = parseFloat(item.stock_quantity) || 0;
+
+ if (!allowZeroStock && qty > currentStock) {
+ Swal.fire('Error', 'Insufficient stock!', 'error');
+ return;
+ }
+
+ item.qty = qty;
+ if (item.qty <= 0) this.remove(id);
+ else this.render();
+ }
+ },
+ async readScale(id) {
+ if (!('serial' in navigator)) {
+ Swal.fire('Error', 'Web Serial API is not supported in this browser. Please use Chrome or Edge.', 'error');
+ return;
+ }
+ try {
+ if (!this.scalePort) {
+ this.scalePort = await navigator.serial.requestPort();
+ await this.scalePort.open({ baudRate: 9600 });
+ } else if (!this.scalePort.readable) {
+ await this.scalePort.open({ baudRate: 9600 });
+ }
+
+ const reader = this.scalePort.readable.getReader();
+ let accumulatedData = '';
+
+ Swal.fire({
+ title: 'Reading Scale...',
+ text: 'Waiting for stable weight...',
+ allowOutsideClick: false,
+ didOpen: () => {
+ Swal.showLoading();
+ }
+ });
+
+ let weight = null;
+ const decoder = new TextDecoder('utf-8');
+ let readCount = 0;
+
+ while (readCount < 30) {
+ const { value, done } = await Promise.race([
+ reader.read(),
+ new Promise((_, reject) => setTimeout(() => reject(new Error('Timeout')), 1000))
+ ]).catch(e => ({ done: true, value: null }));
+
+ if (done) break;
+ if (value) {
+ accumulatedData += decoder.decode(value);
+ const matches = accumulatedData.match(/[\d]+\.\d+/g);
+ if (matches && matches.length > 0) {
+ weight = parseFloat(matches[matches.length - 1]);
+ if (!isNaN(weight) && weight > 0) {
+ break;
+ }
+ }
+ }
+ readCount++;
+ }
+
+ reader.releaseLock();
+
+ if (weight !== null && weight > 0) {
+ Swal.close();
+ this.setQty(id, weight);
+ Swal.fire({
+ toast: true,
+ position: 'top-end',
+ icon: 'success',
+ title: 'Weight Read: ' + weight.toFixed(3) + ' kg',
+ showConfirmButton: false,
+ timer: 1500
+ });
+ } else {
+ Swal.fire('Warning', 'Could not read a valid weight. Please try again.', 'warning');
+ }
+ } catch (err) {
+ console.error('Scale Error:', err);
+ if (err.name === 'NotFoundError') {
+ // User cancelled the prompt
+ return;
+ }
+ Swal.fire('Error', 'Failed to read from scale: ' + err.message, 'error');
+ this.scalePort = null;
+ }
+ },
updateQty(id, delta) {
if (!this.items) return;
const item = this.items.find(i => i.id === id);
@@ -6641,6 +6733,9 @@ $projectDescription = $_SERVER['PROJECT_DESCRIPTION'] ?? 'Accounting System';
${qty}
+