models.py

from app import db
from datetime import datetime
from werkzeug.security import generate_password_hash, check_password_hash

class User(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String(80), unique=True, nullable=False)
    email = db.Column(db.String(120), nullable=False)
    password_hash = db.Column(db.String(256), nullable=False)
    is_admin = db.Column(db.Boolean, default=False)
    created_at = db.Column(db.DateTime, default=datetime.utcnow)

    def set_password(self, password):
        self.password_hash = generate_password_hash(password)

    def check_password(self, password):
        return check_password_hash(self.password_hash, password)

    def __repr__(self):
        return f'<User {self.username}>'

class Post(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    title = db.Column(db.String(200), nullable=False)
    content = db.Column(db.Text, nullable=False)
    author_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=False)
    created_at = db.Column(db.DateTime, default=datetime.utcnow)
    
    author = db.relationship('User', backref=db.backref('posts', lazy=True))

    def __repr__(self):
        return f'<Post {self.title}>'

class Comment(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    content = db.Column(db.Text, nullable=False)
    author_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=False)
    post_id = db.Column(db.Integer, db.ForeignKey('post.id'), nullable=False)
    created_at = db.Column(db.DateTime, default=datetime.utcnow)
    
    author = db.relationship('User', backref=db.backref('comments', lazy=True))
    post = db.relationship('Post', backref=db.backref('comments', lazy=True))

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

class BankAccount(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    user_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=False)
    account_number = db.Column(db.String(20), unique=True, nullable=False)
    balance = db.Column(db.Float, default=1000.0)
    
    user = db.relationship('User', backref=db.backref('bank_accounts', lazy=True))

    def __repr__(self):
        return f'<BankAccount {self.account_number}>'