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from sqlalchemy import create_engine, Column, Integer, String, DateTime
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker, Session
from datetime import datetime
import pandas as pd
import uuid
from rating_systems import compute_elo
DATABASE_URL = "sqlite:///./data/votes.db" # Example with SQLite, replace with PostgreSQL for production
engine = create_engine(DATABASE_URL, connect_args={"check_same_thread": False})
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
Base = declarative_base()
# Database model
class Vote(Base):
__tablename__ = "votes"
id = Column(Integer, primary_key=True, index=True)
image_id = Column(String, index=True)
model_a = Column(String)
model_b = Column(String)
winner = Column(String)
user_id = Column(String, index=True)
fpath_a = Column(String)
fpath_b = Column(String)
timestamp = Column(DateTime, default=datetime.utcnow)
Base.metadata.create_all(bind=engine)
# Dependency for database session
def get_db():
db = SessionLocal()
try:
yield db
finally:
db.close()
def add_vote(vote_data):
with SessionLocal() as db:
db_vote = Vote(**vote_data)
db.add(db_vote)
db.commit()
db.refresh(db_vote)
return {"id": db_vote.id, "user_id": db_vote.user_id, "timestamp": db_vote.timestamp}
# Function to get all votes
def get_all_votes():
with SessionLocal() as db:
votes = db.query(Vote).all()
return votes
# Function to compute Elo scores
def compute_elo_scores():
with SessionLocal() as db:
votes = db.query(Vote).all()
data = {
"model_a": [vote.model_a for vote in votes],
"model_b": [vote.model_b for vote in votes],
"winner": [vote.winner for vote in votes]
}
df = pd.DataFrame(data)
elo_scores = compute_elo(df)
return elo_scores |