"""
Server log model for audit trail
"""

from app.extensions import db
import datetime

class ServerLog(db.Model):
    """Server log model for tracking system actions"""
    
    id = db.Column(db.Integer, primary_key=True)
    action = db.Column(db.String(255), nullable=False, index=True)
    user_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=True)
    ip_address = db.Column(db.String(45), nullable=True)  # Support IPv6
    user_agent = db.Column(db.Text, nullable=True)
    timestamp = db.Column(db.DateTime, default=datetime.datetime.utcnow, index=True)
    level = db.Column(db.String(20), default='INFO')  # INFO, WARNING, ERROR, DEBUG
    
    # Relationships
    user = db.relationship('User', backref='logs')

    @staticmethod
    def log(action, user_id=None, ip_address=None, user_agent=None, level='INFO'):
        """Create a new log entry"""
        log_entry = ServerLog(
            action=action,
            user_id=user_id,
            ip_address=ip_address,
            user_agent=user_agent,
            level=level
        )
        db.session.add(log_entry)
        db.session.commit()
        return log_entry

    @staticmethod
    def get_recent_logs(limit=50):
        """Get recent log entries"""
        return ServerLog.query.order_by(ServerLog.timestamp.desc()).limit(limit).all()

    def __repr__(self):
        return f'<ServerLog {self.action} at {self.timestamp}>'