crappy

utils/barcodes.py

@@ -0,0 +1,25 @@
+def generate_ean13_checksum(ean12):
+    if len(ean12) != 12:
+        return None
+    digits = [int(digit) for digit in ean12]
+    odd_sum = sum(digits[::2])
+    even_sum = sum(digits[1::2])
+    total = odd_sum + 3 * even_sum
+    checksum = 10 - (total % 10)
+    if checksum == 10:
+        checksum = 0
+    return checksum
+
+
+def generate_barcode(product_id: int):
+    product_id = str(product_id)
+    # 4 - D
+    # 6 - E
+    # 5 - N
+    # 2 - C
+    # 4652 - DENCO_C (C - CRM)
+    supplier_part = 4652_5
+    article_part = product_id.ljust(7, '0')
+    barcode = f'{supplier_part}{article_part}'
+    checksum_code = generate_ean13_checksum(barcode)
+    return f'{barcode}{checksum_code}'