"""
Activity log model for audit trail
"""

import uuid
from datetime import datetime
from typing import Optional

from sqlalchemy import Column, String, Integer, DateTime, Text, ForeignKey, Index
from sqlalchemy.orm import relationship
from sqlalchemy.sql import func
from sqlalchemy.dialects.sqlite import JSON

from ..core.database import Base


class ActivityLog(Base):
    """Activity log for audit trail"""
    
    __tablename__ = "activity_log"
    
    id = Column(Integer, primary_key=True, autoincrement=True)
    timestamp = Column(DateTime, default=func.now(), nullable=False)
    event_type = Column(String, nullable=False)  # playlist_added, video_downloaded, check_completed, etc.
    
    # Optional foreign keys
    playlist_id = Column(String, ForeignKey("playlists.id", ondelete="CASCADE"), nullable=True)
    video_id = Column(String, ForeignKey("videos.id", ondelete="CASCADE"), nullable=True)
    
    # Details as JSON blob
    details = Column(Text, nullable=True)  # JSON string with additional details
    
    # Relationships
    playlist = relationship("PlaylistSubscription")
    video = relationship("VideoRecord")
    
    def __repr__(self):
        return f"<ActivityLog(id='{self.id}', event_type='{self.event_type}', timestamp='{self.timestamp}')>"


# Create indexes for better query performance
Index("idx_activity_log_timestamp", ActivityLog.timestamp)
Index("idx_activity_log_event_type", ActivityLog.event_type)
Index("idx_activity_log_playlist_id", ActivityLog.playlist_id)
Index("idx_activity_log_video_id", ActivityLog.video_id)