changes

print/barcode_template.txt

@@ -0,0 +1,8 @@
+SIZE 76 mm,95 mm
+GAP 2 mm,0
+DIRECTION 1
+DENSITY 8
+CLS
+{items_block}
+PRINT 1,1
+CUT

print/print_barcode.py

@@ -1,6 +1,24 @@
 import win32print
 import sys
 import json
+import os
+
+def load_template(filename):
+    script_dir = os.path.dirname(os.path.abspath(__file__))
+    path = os.path.join(script_dir, filename)
+    with open(path, "r", encoding="utf-8") as f:
+        return f.read()
+
+def money(n):
+    return f"{int(float(n)):,}" if n is not None else "0"
+
+def build_item_block(item, y_offset):
+    name = item['name']
+    price = money(item['price'])
+    imei = item['imei']
+    return f'''TEXT 20,{y_offset},"3",0,1,1,"{name}"
+TEXT 20,{y_offset+30},"2",0,1,1,"{price} VND"
+BARCODE 20,{y_offset+60},"128",50,1,0,2,2,"{imei}"'''
 
 def print_barcode(tspl_content, printer_name="Xprinter XP-350BM"):
     h = win32print.OpenPrinter(printer_name)
@@ -15,18 +33,18 @@ def print_barcode(tspl_content, printer_name="Xprinter XP-350BM"):
 
 if __name__ == "__main__":
     data = json.loads(sys.argv[1])
+    items = data['items']  # list of {name, price, imei}
 
-    tspl = f'''
-SIZE 50 mm,40 mm
-GAP 2 mm,0
-DIRECTION 1
-DENSITY 8
-CLS
-TEXT 20,15,"3",0,1,1,"{data['name']}"
-TEXT 20,70,"1",0,1,1,"Price: {data['price']} VND"
-BARCODE 20,140,"128",50,1,0,2,2,"{data['imei']}"
-PRINT 1,1
-'''.strip()
+    spacing = 180  # vertical gap between each stacked label, adjust if overlapping/too sparse
+    blocks = []
+    for i, item in enumerate(items):
+        y_offset = 20 + (i * spacing)
+        blocks.append(build_item_block(item, y_offset))
+
+    items_block = "\n\n".join(blocks)
+
+    template = load_template("barcode_template.txt")
+    tspl = template.replace("{items_block}", items_block)
 
     print_barcode(tspl)
     print("Sent to printer.")

print/test_barcode.txt

@@ -1,17 +0,0 @@
-SIZE 50 mm,40 mm
-GAP 2 mm,0
-DIRECTION 1
-DENSITY 8
-CLS
-
-TEXT 20,15,"3",0,1,1,"CellphoneS Store"
-TEXT 20,45,"2",0,1,1,"iPhone 15 Pro Max 256GB"
-TEXT 20,70,"2",0,1,1,"Color: Natural Titanium"
-TEXT 20,95,"1",0,1,1,"Price: 29,990,000 VND"
-TEXT 20,115,"1",0,1,1,"Warranty: 12 months"
-
-BARCODE 20,140,"128",50,1,0,2,2,"SKU123456789"
-
-QRCODE 280,140,"L",4,"A",0,"https://example.com/p/123456789"
-
-PRINT 1,1