Refactor main.py: Remove unused imports and authentication code

app/main.py

@@ -1,93 +1,16 @@
-import os
-from datetime import datetime, timedelta
 from io import BytesIO
 
 import uvicorn
-from doten import load_dotenv  # type: ignore
-from fastapi import Depends, FastAPI, File, HTTPException, UploadFile, status
-from fastapi.security import OAuth2PasswordBearer, OAuth2PasswordRequestForm
-from jose import jwt  # type: ignore
-from passlib.context import CryptContext  # type: ignore
+from fastapi import FastAPI, File, HTTPException, UploadFile
 from PIL import Image
 from pydantic import BaseModel
-from sqlalchemy import Column, Integer, String  # type: ignore
-from sqlalchemy.ext.declarative import declarative_base  # type: ignore
 
 from .model import load_model, predict, prepare_image
 
 app = FastAPI(title="Age Detection", description="API to predict age from images", version="0.1")
 
 model = load_model()
 
-load_dotenv()
-
-SECRET_KEY = os.getenv("SECRET_KEY")
-ALGORITHM = os.getenv("ALGORITHM")
-ACCESS_TOKEN_EXPIRE_MINUTES = os.getenv("ACCESS_TOKEN_EXPIRE_MINUTES")
-
-
-Base = declarative_base()
-
-
-class User(Base):
-    __tablename__ = "users"
-
-    id = Column(Integer, primary_key=True, index=True)
-    username = Column(String, unique=True, index=True)
-    hashed_password = Column(String)
-
-
-class Token(BaseModel):
-    access_token: str
-    token_type: str
-
-
-class UserInDB(User):
-    hashed_password: str
-
-
-pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
-oauth2_scheme = OAuth2PasswordBearer(tokenUrl="token")
-
-
-def verify_password(plain_password, hashed_password):
-    return pwd_context.verify(plain_password, hashed_password)
-
-
-def get_password_hash(password):
-    return pwd_context.hash(password)
-
-
-def authenticate_user(users, username: str, password: str):
-    user = users.get(username)
-    if not user:
-        return False
-    if not verify_password(password, user.hashed_password):
-        return False
-    return user
-
-
-def create_acess_token(data: dict, expires_delta: timedelta = timedelta(minutes=15)):
-    to_encode = data.copy()
-    expire = datetime.utcnow() + expires_delta
-    to_encode.update({"exp": expire})
-    encoded_jwt = jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
-    return encoded_jwt
-
-
-@app.post("/token", response_model=Token)
-def login_for_access_token(form_data: OAuth2PasswordRequestForm = Depends()):
-    user = authenticate_user(users, form_data.username, form_data.password)
-    if not user:
-        raise HTTPException(
-            status_code=status.HTTP_401_UNAUTHORIZED,
-            detail="Incorrect username or password",
-            headers={"WWW-Authenticate": "Bearer"},
-        )
-    access_token_expires = timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES)
-    access_token = create_acess_token(data={"sub": user.username}, expires_delta=access_token_expires)
-    return {"access_token": access_token, "token_type": "bearer"}
-
 
 @app.get("/", tags=["Welcome"])
 def greeting():