Implement OFX 1.x import

drcr/statements/importers/ofx1.py

@@ -0,0 +1,57 @@
+#   DrCr: Web-based double-entry bookkeeping framework
+#   Copyright (C) 2022–2023  Lee Yingtong Li (RunasSudo)
+#
+#   This program is free software: you can redistribute it and/or modify
+#   it under the terms of the GNU Affero General Public License as published by
+#   the Free Software Foundation, either version 3 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU Affero General Public License for more details.
+#
+#   You should have received a copy of the GNU Affero General Public License
+#   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+import lxml.etree as ET
+
+from ..models import StatementLine
+
+from datetime import datetime
+from io import StringIO
+
+def import_ofx1(file):
+	raw_ofx = file.read().decode('utf-8')
+	
+	# Convert OFX header to XML and parse
+	raw_payload = raw_ofx[raw_ofx.index('<OFX>'):]
+	xml_input = StringIO(raw_payload.replace('&', '&amp;'))
+	try:
+		tree = ET.parse(xml_input, ET.HTMLParser())
+	except Exception as ex:
+		raise ex
+	root = tree.getroot()
+	
+	# Read transactions
+	lines = []  # Do first pass to catch "extra description lines"
+	for transaction in root.find('.//banktranlist').findall('.//stmttrn'):
+		date = transaction.find('.//dtposted').text
+		date = date[0:4] + '-' + date[4:6] + '-' + date[6:8]
+		description = transaction.find('.//memo').text.strip()
+		amount = transaction.find('.//trnamt').text.strip()
+		
+		lines.append([date, description, amount, []])
+	
+	imported_statement_lines = []
+	
+	# Import
+	for date, description, amount, notes in lines:
+		imported_statement_lines.append(StatementLine(
+			dt=datetime.strptime(date, '%Y-%m-%d'),
+			description=description,
+			quantity=round(float(amount)*100),
+			commodity='$'
+		))
+	
+	return imported_statement_lines

drcr/statements/views.py

@@ -82,3 +82,29 @@ def statement_line_reconcile_transfer():
 	db.session.commit()
 	
 	return redirect('/statement-lines')
+
+@app.route('/statement-lines/import', methods=['GET', 'POST'])
+def statement_lines_import():
+	if request.method == 'GET':
+		return render_template('statements/import.html')
+	
+	# Import using importer
+	if request.form['format'] == 'ofx1':
+		from .importers.ofx1 import import_ofx1
+		statement_lines = import_ofx1(request.files['file'])
+	else:
+		abort(400)
+	
+	# Fill in source_account
+	for statement_line in statement_lines:
+		statement_line.source_account = request.form['source-account']
+	
+	if request.form['action'] == 'preview':
+		return render_template('statements/import_preview.html', statement_lines=statement_lines)
+	
+	# Add to database
+	for statement_line in statement_lines:
+		db.session.add(statement_line)
+	db.session.commit()
+	
+	return redirect('/statement-lines')

drcr/templates/base.html

@@ -49,6 +49,7 @@
 			</div>
 		{% endblock %}
 		
+		{#<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.2.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-kenU1KFdBIe4zVF0s0G1M5b4hcpxyD9F7jL+jjXkk+Q2h455rYXK/7HAuoJl+0I4" crossorigin="anonymous"></script>#}
 		{% block scripts %}{% endblock %}
 	</body>
 </html>

drcr/templates/statements/import.html

@@ -0,0 +1,43 @@
+{#  DrCr: Web-based double-entry bookkeeping framework
+    Copyright (C) 2022–2023  Lee Yingtong Li (RunasSudo)
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+#}
+
+{% extends 'base.html' %}
+{% block title %}Import statement{% endblock %}
+
+{% block content %}
+	<h1 class="h2 my-4">Import statement</h1>
+	
+	<h2 class="h3">OFX 1.x</h2>
+	
+	<form method="POST" enctype="multipart/form-data">
+		<input type="hidden" name="format" value="ofx1">
+		<div class="d-flex">
+			<div class="flex-grow-1 me-2">
+				<input class="form-control" name="source-account" placeholder="Source account">
+			</div>
+			<div class="flex-grow-1">
+				<input class="form-control" type="file" name="file" accept=".ofx">
+			</div>
+			<div>
+				<button type="submit" name="action" value="preview" class="btn btn-secondary ms-2">Preview</button>
+			</div>
+			<div>
+				<button type="submit" name="action" value="import" class="btn btn-primary ms-2">Import</button>
+			</div>
+		</div>
+	</form>
+{% endblock %}

drcr/templates/statements/import_preview.html

@@ -0,0 +1,48 @@
+{#  DrCr: Web-based double-entry bookkeeping framework
+    Copyright (C) 2022–2023  Lee Yingtong Li (RunasSudo)
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+#}
+
+{% extends 'base.html' %}
+{% block title %}Import statement preview{% endblock %}
+
+{% block content %}
+	<h1 class="h2 my-4">Import statement preview</h1>
+	
+	<h2 class="h3 mb-4">Imported statement lines</h2>
+	
+	<table class="table">
+		<thead>
+			<tr>
+				<th>Date</th>
+				<th>Description</th>
+				<th class="text-end">Dr</th>
+				<th class="text-end">Cr</th>
+				<th class="text-end">Balance</th>
+			</tr>
+		</thead>
+		<tbody>
+			{% for line in statement_lines %}
+				<tr>
+					<td>{{ line.dt.strftime('%Y-%m-%d') }}</td>
+					<td>{{ line.description }}</td>
+					<td class="text-end">{{ line.amount().format() if line.quantity >= 0 else '' }}</td>
+					<td class="text-end">{{ (line.amount()|abs).format() if line.quantity < 0 else '' }}</td>
+					<td class="text-end">{{ line.balance or '' }}</td>
+				</tr>
+			{% endfor %}
+		</tbody>
+	</table>
+{% endblock %}

drcr/templates/statements/statement_lines.html

@@ -22,9 +22,10 @@
 	<h1 class="h2 my-4">Statement lines</h1>
 	
 	<form method="POST">
-		{#<div class="mb-2">
-			<button type="submit" class="btn btn-outline-secondary" formaction="/statement-lines/reconcile-transfer">Reconcile selected as transfer</button>
-		</div>#}
+		<div class="mb-2">
+			{#<button type="submit" class="btn btn-outline-secondary" formaction="/statement-lines/reconcile-transfer">Reconcile selected as transfer</button>#}
+			<a href="/statement-lines/import" class="btn btn-outline-secondary">Import statement</a>
+		</div>
 		
 		<table class="table">
 			<thead>

requirements.txt

@@ -1,6 +1,9 @@
 Flask==2.2.2
 Flask-SQLAlchemy==3.0.2
 
+# For OFX 1.x import
+lxml==4.9.2
+
 # Dependencies
 click==8.1.3
 greenlet==2.0.1