from sqlalchemy import Column, String, DateTime, Integer, ForeignKey, Text, Enum
from sqlalchemy.orm import relationship
from sqlalchemy.sql import func
import enum

from app.db.session import Base


class LogLevel(str, enum.Enum):
    DEBUG = "debug"
    INFO = "info"
    WARNING = "warning"
    ERROR = "error"
    CRITICAL = "critical"


class Log(Base):
    __tablename__ = "logs"

    id = Column(Integer, primary_key=True, index=True)
    device_id = Column(String, ForeignKey("devices.id", ondelete="CASCADE"), nullable=False)
    
    # Log details
    level = Column(Enum(LogLevel), default=LogLevel.INFO)
    message = Column(Text, nullable=False)
    source = Column(String, nullable=True)  # Component or module that generated the log
    
    # Timestamp
    timestamp = Column(DateTime(timezone=True), server_default=func.now())
    
    # Relationship
    device = relationship("Device", back_populates="logs")