[FIX] account: fix incorrect value for company_residual_signed on invoice + set invoice in the journal currency and not in euro

addons/account/demo/account_invoice_demo.yml

@@ -4,7 +4,6 @@
   !record {model: account.invoice, id: demo_invoice_1}:
     company_id: base.main_company
     partner_id: base.res_partner_12
-    currency_id: base.EUR
     user_id: base.user_demo
     reference_type: none
     payment_term_id: account.account_payment_term
@@ -25,7 +24,6 @@
   !record {model: account.invoice, id: demo_invoice_2}:
     company_id: base.main_company
     partner_id: base.res_partner_2
-    currency_id: base.EUR
     type: 'out_invoice'
     date_invoice: !eval time.strftime('%Y-%m')+'-08'
     invoice_line_ids:
@@ -43,7 +41,6 @@
   !record {model: account.invoice, id: demo_invoice_3}:
     company_id: base.main_company
     partner_id: base.res_partner_2
-    currency_id: base.EUR
     type: 'out_invoice'
     date_invoice: !eval time.strftime('%Y-%m')+'-08'
     invoice_line_ids:
@@ -61,7 +58,6 @@
   !record {model: account.invoice, id: demo_invoice_invest_sale}:
     company_id: base.main_company
     partner_id: base.res_partner_3
-    currency_id: base.EUR
     type: 'out_invoice'
     date_invoice: !eval time.strftime('%Y-%m')+'-08'
 -
@@ -89,7 +85,6 @@
   !record {model: account.invoice, id: demo_invoice_0}:
     company_id: base.main_company
     partner_id: base.res_partner_12
-    currency_id: base.EUR
     user_id: base.user_demo
     reference_type: none
     payment_term_id: account.account_payment_term
@@ -110,7 +105,6 @@
   !record {model: account.invoice, id: demo_invoice_january_wages}:
     company_id: base.main_company
     partner_id: base.res_partner_12
-    currency_id: base.EUR
     type: 'in_invoice'
     date_invoice: !eval time.strftime('%Y-%m')+'-01'
 -
@@ -131,7 +125,6 @@
   !record {model: account.invoice, id: demo_invoice_equipment_purchase}:
     company_id: base.main_company
     partner_id: base.res_partner_1
-    currency_id: base.EUR
     type: 'in_invoice'
     date_invoice: !eval time.strftime('%Y-%m')+'-15'
 -

addons/account/models/account_invoice.py

@@ -87,13 +87,13 @@ class AccountInvoice(models.Model):
         sign = self.type in ['in_refund', 'out_refund'] and -1 or 1
         for line in self.sudo().move_id.line_ids:
             if line.account_id.internal_type in ('receivable', 'payable'):
-                residual_company_signed += line.amount_residual * sign
+                residual_company_signed += line.amount_residual
                 if line.currency_id == self.currency_id:
                     residual += line.amount_residual_currency if line.currency_id else line.amount_residual
                 else:
                     from_currency = (line.currency_id and line.currency_id.with_context(date=line.date)) or line.company_id.currency_id.with_context(date=line.date)
                     residual += from_currency.compute(line.amount_residual, self.currency_id)
-        self.residual_company_signed = residual_company_signed
+        self.residual_company_signed = abs(residual_company_signed) * sign
         self.residual_signed = abs(residual) * sign
         self.residual = abs(residual)
         digits_rounding_precision = self.currency_id.rounding