[FIX] l10n_sa_invoice: amounts in the QR code should be in Saudi Riyal

closes odoo/odoo#81979

Signed-off-by: William André (wan) <wan@odoo.com>

addons/l10n_sa_invoice/models/account_move.py

@@ -4,6 +4,7 @@ import base64
 
 from odoo import api, fields, models, _
 from odoo.exceptions import UserError
+from odoo.tools import float_repr
 
 
 class AccountMove(models.Model):
@@ -21,13 +22,13 @@ class AccountMove(models.Model):
         for move in self:
             move.l10n_sa_show_delivery_date = move.country_code == 'SA' and move.move_type in ('out_invoice', 'out_refund')
 
-    @api.depends('amount_total', 'amount_untaxed', 'l10n_sa_confirmation_datetime', 'company_id', 'company_id.vat')
+    @api.depends('amount_total_signed', 'amount_tax_signed', 'l10n_sa_confirmation_datetime', 'company_id', 'company_id.vat')
     def _compute_qr_code_str(self):
         """ Generate the qr code for Saudi e-invoicing. Specs are available at the following link at page 23
         https://zatca.gov.sa/ar/E-Invoicing/SystemsDevelopers/Documents/20210528_ZATCA_Electronic_Invoice_Security_Features_Implementation_Standards_vShared.pdf
         """
         def get_qr_encoding(tag, field):
-            company_name_byte_array = field.encode('UTF-8')
+            company_name_byte_array = field.encode()
             company_name_tag_encoding = tag.to_bytes(length=1, byteorder='big')
             company_name_length_encoding = len(company_name_byte_array).to_bytes(length=1, byteorder='big')
             return company_name_tag_encoding + company_name_length_encoding + company_name_byte_array
@@ -39,11 +40,11 @@ class AccountMove(models.Model):
                 company_vat_enc = get_qr_encoding(2, record.company_id.vat)
                 time_sa = fields.Datetime.context_timestamp(self.with_context(tz='Asia/Riyadh'), record.l10n_sa_confirmation_datetime)
                 timestamp_enc = get_qr_encoding(3, time_sa.isoformat())
-                invoice_total_enc = get_qr_encoding(4, str(record.amount_total))
-                total_vat_enc = get_qr_encoding(5, str(record.currency_id.round(record.amount_total - record.amount_untaxed)))
+                invoice_total_enc = get_qr_encoding(4, float_repr(abs(record.amount_total_signed), 2))
+                total_vat_enc = get_qr_encoding(5, float_repr(abs(record.amount_tax_signed), 2))
 
                 str_to_encode = seller_name_enc + company_vat_enc + timestamp_enc + invoice_total_enc + total_vat_enc
-                qr_code_str = base64.b64encode(str_to_encode).decode('UTF-8')
+                qr_code_str = base64.b64encode(str_to_encode).decode()
             record.l10n_sa_qr_code_str = qr_code_str
 
     def _post(self, soft=True):