database.py

from sqlalchemy import create_engine, Column, Integer, String, Boolean, Float, Text, ForeignKey
from sqlalchemy.orm import sessionmaker, declarative_base

SQLALCHEMY_DATABASE_URL = "sqlite:///./safestream.db"

engine = create_engine(
    SQLALCHEMY_DATABASE_URL, connect_args={"check_same_thread": False}
)
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)

Base = declarative_base()

class Video(Base):
    __tablename__ = "videos"
    id = Column(Integer, primary_key=True, index=True)
    title = Column(String, index=True)
    url = Column(String) # YouTube Embed ID or URL
    description = Column(String)

class Comment(Base):
    __tablename__ = "comments"
    id = Column(Integer, primary_key=True, index=True)
    video_id = Column(Integer, ForeignKey("videos.id"))
    user = Column(String)
    text = Column(Text)
    timestamp = Column(String) # ISO format
    
    # Analysis fields
    is_toxic = Column(Boolean, default=False)
    toxicity_score = Column(Float, default=0.0)
    flagged_reason = Column(String, nullable=True) 

def init_db():
    Base.metadata.create_all(bind=engine)