[app] scan items in stock reconciliation form

beam/beam/overrides/bin.py

@@ -0,0 +1,22 @@
+# Copyright (c) 2024, AgriTheory and contributors
+# For license information, please see license.txt
+
+import frappe
+
+
+class Bin:
+	pass
+
+
+@frappe.whitelist()
+@frappe.read_only()
+def get_actual_qty(warehouse):
+	actual_qty = frappe.db.get_all(
+		"Bin",
+		filters=[
+			["warehouse", "=", warehouse],
+			["actual_qty", ">", 0],
+		],
+		fields=["item_code", "actual_qty", "valuation_rate"],
+	)
+	return actual_qty

beam/public/js/scan/scan.js

@@ -208,6 +208,38 @@ class ScanHandler {
 				frappe.model.set_value(row.doctype, row.name, 's_warehouse', barcode_context.target)
 				frappe.model.set_value(row.doctype, row.name, 't_warehouse', barcode_context.target)
 			}
+		} else if (barcode_context.doctype == 'Stock Reconciliation Item') {
+			frappe
+				.xcall('beam.beam.overrides.bin.get_actual_qty', { warehouse: barcode_context.context.doc.name })
+				.then(r => {
+					if (r.length > 0) {
+						const items = new Map(cur_frm.doc.items.map(item => [item.item_code, item]));
+						for (let row of r) {
+							if (items.has(row.item_code)) {
+								items.get(row.item_code).qty += row.actual_qty;
+							} else {
+								items.set(row.item_code, {
+									...row,
+									warehouse: barcode_context.context.doc.name,
+									qty: row.actual_qty,
+									barcode: barcode_context.context.barcode,
+								});
+							}
+						}
+
+						const filteredItems = Array.from(items.values()).filter(items => items.item_code);
+						cur_frm.set_value('items', filteredItems);
+
+						/*
+							Avoid using `cur_frm.set_value('set_warehouse', barcode_context.context.doc.name)` 
+							because it triggers `set_valuation_rate_and_qty` from `erpnext/stock_reconciliation.js`,
+							which resets the quantity to 0.
+						*/
+
+						cur_frm.doc.set_warehouse = barcode_context.context.doc.name
+						cur_frm.refresh_field('set_warehouse')
+					}
+				});
 		}
 	}
 	add_or_increment(barcode_context) {