from datetime import datetime, timezone
from app import db

class Transaction(db.Model):
    __tablename__ = 'transactions'

    id = db.Column(db.String(50), primary_key=True)
    account_id = db.Column(db.String(50), nullable=False)
    type = db.Column(db.String(50), nullable=False)
    amount = db.Column(db.Float, nullable=False)
    status = db.Column(db.String(20), default='pending')
    created_at = db.Column(db.DateTime, default=datetime.now(timezone.utc))
    updated_at = db.Column(db.DateTime, default=datetime.now(timezone.utc), onupdate=datetime.now(timezone.utc))

    def __repr__(self):
        return f'<Transaction {self.id}>'