[FIX] float parsing in paypal import

In English version of the files, paypal uses ',' as thousands separator and '.' as
decimal separator -> the previous code would populate the bank statement with
wrong values without complaining.

We fix this by allowing to configure the separators in the paypal map.

account_bank_statement_import_paypal/data/paypal_map_data.xml

@@ -3,6 +3,8 @@
 
     <record id="paypal_map" model="account.bank.statement.import.paypal.map">
       <field name="name">Paypal Monthly Statement</field>
+      <field name="float_thousands_sep">comma</field>
+      <field name="float_decimal_sep">dot</field>
     </record>
 
     <record id="paypal_map_line_date" model="account.bank.statement.import.paypal.map.line">

account_bank_statement_import_paypal/models/account_bank_statement_import_paypal_map.py

@@ -1,7 +1,7 @@
 # Copyright 2019 Tecnativa - Vicent Cubells
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
 
-from odoo import fields, models
+from odoo import fields, models, api
 
 
 class AccountBankStatementImportPaypalMap(models.Model):
@@ -17,6 +17,50 @@ class AccountBankStatementImportPaypalMap(models.Model):
         required=True,
         copy=True,
     )
+    float_thousands_sep = fields.Selection(
+        [('dot', 'dot (.)'),
+         ('comma', 'comma (,)'),
+         ('none', 'none'),
+         ],
+        string='Thousands separator',
+        # forward compatibility: this was the value assumed
+        # before the field was added.
+        default='dot',
+        required=True
+    )
+    float_decimal_sep = fields.Selection(
+        [('dot', 'dot (.)'),
+         ('comma', 'comma (,)'),
+         ('none', 'none'),
+         ],
+        string='Decimals separator',
+        # forward compatibility: this was the value assumed
+        # before the field was added.
+        default='comma',
+        required=True
+    )
+
+    @api.onchange('float_thousands_sep')
+    def onchange_thousands_separator(self):
+        if 'dot' == self.float_thousands_sep == self.float_decimal_sep:
+            self.float_decimal_sep = 'comma'
+        elif 'comma' == self.float_thousands_sep == self.float_decimal_sep:
+            self.float_decimal_sep = 'dot'
+
+    @api.onchange('float_decimal_sep')
+    def onchange_decimal_separator(self):
+        if 'dot' == self.float_thousands_sep == self.float_decimal_sep:
+            self.float_thousands_sep = 'comma'
+        elif 'comma' == self.float_thousands_sep == self.float_decimal_sep:
+            self.float_thousands_sep = 'dot'
+
+    def _get_separators(self):
+        separators = {'dot': '.',
+                      'comma': ',',
+                      'none': '',
+                      }
+        return (separators[self.float_thousands_sep],
+                separators[self.float_decimal_sep])
 
 
 class AccountBankStatementImportPaypalMapLIne(models.Model):

account_bank_statement_import_paypal/tests/paypal_en.csv

@@ -1,3 +1,3 @@
 "Date","Time","Time Zone","Description","Currency","Gross","Fee ","Net","Balance","Transaction ID","From Email Address","Name","Bank Name","Bank Account","Shipping and Handling Amount","Sales Tax","Invoice ID","Reference Txn ID"
-"12/15/2018","20:07:53","CET","Your best supplier","USD","-33,50","-2,3","-31,2","-31,2","53820712527632627","","John Doe","Bank of America","123456789","0","0","INV25","23"
-"12/15/2018","22:07:53","CET","Your payment","USD","525","0","525","493,80","34731322767782103","","Agrolait","","","0","0","INV/2019/0003","24"
+"12/15/2018","20:07:53","CET","Your best supplier","USD","-33.50","-2.3","-31.2","-31.2","53820712527632627","","John Doe","Bank of America","123456789","0","0","INV25","23"
+"12/15/2018","22:07:53","CET","Your payment","USD","1,525.00","0","1,525.00","1,493.80","34731322767782103","","Agrolait","","","0","0","INV/2019/0003","24"

account_bank_statement_import_paypal/tests/test_paypal_statement_import.py

@@ -55,4 +55,4 @@ class TestPaypalFile(common.SavepointCase):
         self.assertEqual(len(statement.line_ids), 3)
         self.assertEqual(len(statement.mapped('line_ids').filtered(
             lambda x: x.partner_id and x.account_id)), 1)
-        self.assertAlmostEqual(sum(statement.mapped('line_ids.amount')), 489.2)
+        self.assertAlmostEqual(sum(statement.mapped('line_ids.amount')), 1489.2)

account_bank_statement_import_paypal/views/paypal_map_views.xml

@@ -16,6 +16,8 @@
             <form string="Paypal Map">
                 <group>
                     <field name="name"/>
+                    <field name="float_thousands_sep"/>
+                    <field name="float_decimal_sep"/>
                 </group>
                 <separator string="Mapping Lines"/>
                 <field name="map_line_ids"/>

account_bank_statement_import_paypal/wizards/account_bank_statement_import_paypal.py

@@ -55,10 +55,13 @@ class AccountBankStatementImport(models.TransientModel):
 
     @api.model
     def _paypal_convert_amount(self, amount_str):
-        """ This method is designed to be inherited """
-        valstr = re.sub(r'[^\d,.-]', '', amount_str)
-        valstrdot = valstr.replace('.', '')
-        valstrdot = valstrdot.replace(',', '.')
+        if self.paypal_map_id:
+            thousands, decimal = self.paypal_map_id._get_separators()
+        else:
+            thousands, decimal = ',', '.'
+        valstr = re.sub(r'[^\d%s%s.-]' % (thousands, decimal), '', amount_str)
+        valstrdot = valstr.replace(thousands, '')
+        valstrdot = valstrdot.replace(decimal, '.')
         return float(valstrdot)
 
     @api.model