Clean up directory structure and remove redundant files

database.py

@@ -0,0 +1,17 @@
+from sqlalchemy import create_engine, Column, String, DateTime
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import sessionmaker
+import datetime
+
+SQLALCHEMY_DATABASE_URL = 'sqlite:///./test.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 APIKey(Base):
+    __tablename__ = 'api_keys'
+    key = Column(String, primary_key=True, index=True)
+    expires_at = Column(DateTime)
+
+Base.metadata.create_all(bind=engine)

main.py

@@ -0,0 +1,30 @@
+from fastapi import FastAPI, Header, HTTPException, Depends
+from sqlalchemy.orm import Session
+import datetime
+import uuid
+from database import SessionLocal, APIKey
+
+app = FastAPI()
+
+def get_db():
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()
+
+@app.get('/get-api-key')
+def get_api_key(db: Session = Depends(get_db)):
+    new_key = str(uuid.uuid4())
+    expires_at = datetime.datetime.utcnow() + datetime.timedelta(hours=24)
+    db_key = APIKey(key=new_key, expires_at=expires_at)
+    db.add(db_key)
+    db.commit()
+    return {'api_key': new_key, 'expires_at': expires_at}
+
+@app.get('/hello')
+def read_hello(x_api_key: str = Header(...), db: Session = Depends(get_db)):
+    db_key = db.query(APIKey).filter(APIKey.key == x_api_key).first()
+    if not db_key or db_key.expires_at < datetime.datetime.utcnow():
+        raise HTTPException(status_code=403, detail='Invalid or expired API Key')
+    return {'message': 'Hello World'}