05/31 Phase 1: initial codes

app/models/recurring_rule.py

@@ -0,0 +1,35 @@
+from app.extensions import db
+from datetime import datetime
+
+
+class RecurringRule(db.Model):
+    __tablename__ = 'recurring_rules'
+
+    id = db.Column(db.Integer, primary_key=True)
+    name = db.Column(db.String(100), nullable=False)
+    account_id = db.Column(db.Integer, db.ForeignKey('accounts.id'), nullable=False)
+    category_id = db.Column(db.Integer, db.ForeignKey('categories.id'), nullable=True)
+    transaction_type = db.Column(
+        db.Enum('income', 'expense'),
+        nullable=False
+    )
+    amount = db.Column(db.Numeric(15, 2), nullable=False)
+    description = db.Column(db.String(255), nullable=False)
+    frequency = db.Column(
+        db.Enum('daily', 'weekly', 'biweekly', 'monthly', 'quarterly', 'yearly'),
+        nullable=False,
+        default='monthly'
+    )
+    start_date = db.Column(db.Date, nullable=False)
+    end_date = db.Column(db.Date, nullable=True)
+    last_run = db.Column(db.Date, nullable=True)
+    next_run = db.Column(db.Date, nullable=True, index=True)
+    is_active = db.Column(db.Boolean, default=True)
+    created_at = db.Column(db.DateTime, default=datetime.utcnow)
+
+    transactions = db.relationship('Transaction', back_populates='recurring_rule', lazy='dynamic')
+    account = db.relationship('Account')
+    category = db.relationship('Category')
+
+    def __repr__(self):
+        return f'<RecurringRule {self.name} {self.frequency}>'