erpnext.utils.BarcodeScanner = class BarcodeScanner { constructor(opts) { this.frm = opts.frm; // field from which to capture input of scanned data this.scan_field_name = opts.scan_field_name || "scan_barcode"; this.scan_barcode_field = this.frm.fields_dict[this.scan_field_name]; this.barcode_field = opts.barcode_field || "barcode"; this.serial_no_field = opts.serial_no_field || "serial_no"; this.batch_no_field = opts.batch_no_field || "batch_no"; this.qty_field = opts.qty_field || "qty"; this.items_table_name = opts.items_table_name || "items"; this.items_table = this.frm.doc[this.items_table_name]; // any API that takes `search_value` as input and returns dictionary as follows // { // item_code: "HORSESHOE", // present if any item was found // bar_code: "123456", // present if barcode was scanned // batch_no: "LOT12", // present if batch was scanned // serial_no: "987XYZ", // present if serial no was scanned // } this.scan_api = opts.scan_api || "erpnext.selling.page.point_of_sale.point_of_sale.search_for_serial_or_batch_or_barcode_number"; } process_scan() { let me = this; const input = this.scan_barcode_field.value; if (!input) { return; } frappe .call({ method: this.scan_api, args: { search_value: input, }, }) .then((r) => { const data = r && r.message; if (!data || Object.keys(data).length === 0) { frappe.show_alert({ message: __("Cannot find Item with this Barcode"), indicator: "red", }); this.clean_up(); return; } me.update_table(data.item_code, data.barcode, data.batch_no, data.serial_no); }); } update_table(item_code, barcode, batch_no, serial_no) { let cur_grid = this.frm.fields_dict[this.items_table_name].grid; let row = null; // Check if batch is scanned and table has batch no field let batch_no_scan = Boolean(batch_no) && frappe.meta.has_field(cur_grid.doctype, this.batch_no_field); if (batch_no_scan) { row = this.get_batch_row_to_modify(batch_no); } else { // serial or barcode scan row = this.get_row_to_modify_on_scan(row, item_code); } if (!row) { // add new row if new item/batch is scanned row = frappe.model.add_child(this.frm.doc, cur_grid.doctype, this.items_table_name); // trigger any row add triggers defined on child table. this.frm.script_manager.trigger(`${this.items_table_name}_add`, row.doctype, row.name); } if (this.is_duplicate_serial_no(row, serial_no)) { this.clean_up(); return; } this.show_scan_message(row.idx, row.item_code); this.set_item(row, item_code); this.set_serial_no(row, serial_no); this.set_batch_no(row, batch_no); this.set_barcode(row, barcode); this.clean_up(); } set_item(row, item_code) { const item_data = { item_code: item_code }; item_data[this.qty_field] = (row[this.qty_field] || 0) + 1; frappe.model.set_value(row.doctype, row.name, item_data); } set_serial_no(row, serial_no) { if (serial_no && frappe.meta.has_field(row.doctype, this.serial_no_field)) { const existing_serial_nos = row[this.serial_no_field]; let new_serial_nos = ""; if (!!existing_serial_nos) { new_serial_nos = existing_serial_nos + "\n" + serial_no; } else { new_serial_nos = serial_no; } frappe.model.set_value(row.doctype, row.name, this.serial_no_field, new_serial_nos); } } set_batch_no(row, batch_no) { if (batch_no && frappe.meta.has_field(row.doctype, this.batch_no_field)) { frappe.model.set_value(row.doctype, row.name, this.batch_no_field, batch_no); } } set_barcode(row, barcode) { if (barcode && frappe.meta.has_field(row.doctype, this.barcode_field)) { frappe.model.set_value(row.doctype, row.name, this.barcode_field, barcode); } } show_scan_message(idx, exist = null) { // show new row or qty increase toast if (exist) { frappe.show_alert( { message: __("Row #{0}: Qty increased by 1", [idx]), indicator: "green", }, 5 ); } else { frappe.show_alert( { message: __("Row #{0}: Item added", [idx]), indicator: "green", }, 5 ); } } is_duplicate_serial_no(row, serial_no) { const is_duplicate = !!serial_no && !!row[this.serial_no_field] && row[this.serial_no_field].includes(serial_no); if (is_duplicate) { frappe.show_alert( { message: __("Serial No {0} is already added", [serial_no]), indicator: "orange", }, 5 ); } return is_duplicate; } get_batch_row_to_modify(batch_no) { // get row if batch already exists in table const existing_batch_row = this.items_table.find((d) => d.batch_no === batch_no); return existing_batch_row || null; } get_row_to_modify_on_scan(row_to_modify, item_code) { // get an existing item row to increment or blank row to modify const existing_item_row = this.items_table.find((d) => d.item_code === item_code); const blank_item_row = this.items_table.find((d) => !d.item_code); if (existing_item_row) { row_to_modify = existing_item_row; } else if (blank_item_row) { row_to_modify = blank_item_row; } return row_to_modify; } clean_up() { this.scan_barcode_field.set_value(""); refresh_field(this.items_table_name); } };