From 81c7bb94a4702876f10fdf928f5b0fffc72aea93 Mon Sep 17 00:00:00 2001
From: Keenan Tims <ktims@gotroot.ca>
Date: Thu, 24 Apr 2025 15:32:33 -0700
Subject: [PATCH] add MBNA parser

---
 parsers.py | 36 +++++++++++++++++++++++++++++++++++-
 watcher.py |  4 ++--
 2 files changed, 37 insertions(+), 3 deletions(-)

diff --git a/parsers.py b/parsers.py
index 012d483..d4d8553 100644
--- a/parsers.py
+++ b/parsers.py
@@ -42,7 +42,7 @@ class RogersBankParser(TransactionParser):
         body = msg.get_body()
         if body is None:
             raise TransactionParsingFailed("No body of message found")
-        matches = RogersBankParser.EXTRACT_RE.search(body.as_string())
+        matches = self.EXTRACT_RE.search(body.as_string())
         if matches is None:
             raise TransactionParsingFailed("No matches for extraction RE")
         amount = Decimal(matches[1])
@@ -57,3 +57,37 @@ class RogersBankParser(TransactionParser):
             notes="via email",
             imported_id=msg["Message-ID"],
         )
+
+
+class MBNAParser(TransactionParser):
+    EXTRACT_RE = re.compile(
+        r"A purchase of \$(\d+\.\d{2}) from ([^<]+) was made at (\d{1,2}:\d{2} (AM|PM)) UTC on (\d{4}-\d{2}-\d{2})"  # noqa: E501
+    )
+
+    def __init__(self, account_id: UUID):
+        self.account_id = account_id
+
+    def match(self, msg: Message):
+        return (
+            msg["From"] == "MBNA Notifications <noreply@mbna.ca>"
+            and msg["Subject"] == "MBNA - Transaction Alert"
+        )
+
+    def extract(self, msg: EmailMessage) -> Transaction:
+        body = msg.get_body()
+        if body is None:
+            raise TransactionParsingFailed("No body of message found")
+        matches = self.EXTRACT_RE.search(body.as_string())
+        if matches is None:
+            raise TransactionParsingFailed("No matches for extraction RE")
+        amount = Decimal(matches[1])
+        payee = matches[2]
+        date = matches[5]
+        return Transaction(
+            account=self.account_id,
+            date=date,
+            amount=amount,
+            payee=payee,
+            notes="via email",
+            imported_id=msg["Message-ID"],
+        )
diff --git a/watcher.py b/watcher.py
index f8fc680..1360c42 100644
--- a/watcher.py
+++ b/watcher.py
@@ -78,8 +78,8 @@ async def process_message(msg_b: bytes):
                 trans = parser.extract(msg)
                 info("Submitting transaction to Actual: %s", trans)
                 await submit_transaction(trans)
-        except TransactionParsingFailed:
-            warning("Unable to parse message")
+        except TransactionParsingFailed as e:
+            warning("Unable to parse message %s", e)
         except Exception as e:
             warning("Unexpected exception %s", e)