[REF] account: journal items reconciliation (part 1/2)

This commits refactors the code of the reconciliation, in order to facilitate the process of complex use cases, namely multi-currencies or cash-basis-taxes related (see details below). It also prepares the code for a second refactoring where we will save on each journal items the amount_currency and currency_id field (even in case of operation made in company currency), also in the sake of simplification.

1) Multi-currencies:
- the account.partial.reconcile model now will have dedicated columns to specify the amount of the partial reconciliation in the debit_line_id currency and the credit_line_id currency. That comes in handy when dealing with journal items having different secondary currencies, but also allows some simplification.
- residual_amount_currency computation changed accordingly
- moved models account.full.reconcile and account.partial.reconcile in their dedicated .py file

2) Cash basis taxes
- cash basis entries now handle correctly rounding errors to make sure the exact amount of gets reported when the reconciliation becomes full.
- the account for the base amount of cash basis entries has to be set, now, on the company instead of on each cash basis tax.
- that new 'property' field can be set at the CoA installation via the field property_cash_basis_base_account_id of account.chart.template, or going through the accounting settings.

Was task task: 2243420
Was PR #50308

Related: odoo/upgrade#1121
Related: odoo/enterprise#10252
Signed-off-by: Quentin De Paoli (qdp) <qdp@openerp.com>

1 files changed, 11 insertions, 1 deletions

diff --git a/addons/account/models/company.py b/addons/account/models/company.py
index 11e02db2baa..853b2321252 100644
--- a/addons/account/models/company.py
+++ b/addons/account/models/company.py
@@ -55,7 +55,6 @@ class ResCompany(models.Model):
     transfer_account_code_prefix = fields.Char(string='Prefix of the transfer accounts')
     account_sale_tax_id = fields.Many2one('account.tax', string="Default Sale Tax")
     account_purchase_tax_id = fields.Many2one('account.tax', string="Default Purchase Tax")
-    tax_cash_basis_journal_id = fields.Many2one('account.journal', string="Cash Basis Journal")
     tax_calculation_rounding_method = fields.Selection([
         ('round_per_line', 'Round per Line'),
         ('round_globally', 'Round Globally'),
@@ -113,6 +112,17 @@ class ResCompany(models.Model):
     # Technical field to hide country specific fields in company form view
     country_code = fields.Char(related='country_id.code')
 
+    # Cash basis taxes
+    tax_cash_basis_journal_id = fields.Many2one(
+        comodel_name='account.journal',
+        string="Cash Basis Journal")
+    account_cash_basis_base_account_id = fields.Many2one(
+        comodel_name='account.account',
+        domain=[('deprecated', '=', False)],
+        string="Base Tax Received Account",
+        help="Account that will be set on lines created in cash basis journal entry and used to keep track of the "
+             "tax base amount.")
+
     @api.constrains('account_opening_move_id', 'fiscalyear_last_day', 'fiscalyear_last_month')
     def _check_fiscalyear_last_day(self):
         # if the user explicitly chooses the 29th of February we allow it: