from datetime import datetime, timezone
from extensions import db

class User(db.Model):
    __tablename__ = "users"

    id            = db.Column(db.Integer, primary_key=True)
    email         = db.Column(db.String(255), unique=True, nullable=False, index=True)
    password_hash = db.Column(db.String(512), nullable=False)
    role          = db.Column(db.String(50), default="user", nullable=False)
    is_active     = db.Column(db.Boolean, default=True, nullable=False)
    created_at    = db.Column(db.DateTime, default=lambda: datetime.now(timezone.utc))
    last_login    = db.Column(db.DateTime, nullable=True)

    def to_dict(self):
        return {
            "id":         self.id,
            "email":      self.email,
            "role":       self.role,
            "is_active":  self.is_active,
            "created_at": self.created_at.isoformat(),
        }

    def __repr__(self):
        return f"<User {self.email}>"