[Revolut] Import the fees from the CSV

This work uses #105 by Dr-Nuke

src/tariochbctools/importers/revolut/importer.py

@@ -13,10 +13,11 @@
 class Importer(identifier.IdentifyMixin, importer.ImporterProtocol):
     """An importer for Revolut CSV files."""
 
-    def __init__(self, regexps, account, currency):
+    def __init__(self, regexps, account, currency, fee=None):
         identifier.IdentifyMixin.__init__(self, matchers=[("filename", regexps)])
         self.account = account
         self.currency = currency
+        self._fee = fee
 
     def name(self):
         return super().name() + self.account
@@ -53,10 +54,25 @@ def extract(self, file, existing_entries):
                     amt = amount.Amount(amount_raw, row["Currency"])
                     balance = amount.Amount(bal, self.currency)
                     book_date = parse(row["Completed Date"].strip()).date()
+                    fee_amt_raw = D(row["Fee"].replace("'", "").strip())
+                    fee = amount.Amount(-fee_amt_raw, row["Currency"])
                 except Exception as e:
                     logging.warning(e)
                     continue
 
+                postings = [
+                    data.Posting(self.account, amt, None, None, None, None),
+                ]
+                if self._fee is not None and self.is_non_zero(fee_amt_raw):
+                    postings.extend(
+                        [
+                            data.Posting(self.account, fee, None, None, None, None),
+                            data.Posting(
+                                self._fee["account"], -fee, None, None, None, None
+                            ),
+                        ]
+                    )
+
                 entry = data.Transaction(
                     data.new_metadata(file.name, 0, {}),
                     book_date,
@@ -65,9 +81,7 @@ def extract(self, file, existing_entries):
                     row["Description"].strip(),
                     data.EMPTY_SET,
                     data.EMPTY_SET,
-                    [
-                        data.Posting(self.account, amt, None, None, None, None),
-                    ],
+                    postings,
                 )
                 entries.append(entry)
 
@@ -87,3 +101,7 @@ def extract(self, file, existing_entries):
                 pass
 
         return entries
+
+    @staticmethod
+    def _is_non_zero(raw):
+        return abs(float(raw) - 0.00) > 1e-9