From 0cce38bbdbc8c9f59543b2ec0217a989c2a11102 Mon Sep 17 00:00:00 2001
From: Backend IM Bot <bot@backend.im>
Date: Thu, 20 Mar 2025 14:33:19 +0000
Subject: [PATCH] Update code in endpoints/login.post.py

---
 endpoints/login.post.py | 128 +++++++++++++++++++++++++++++++++++-----
 1 file changed, 114 insertions(+), 14 deletions(-)

diff --git a/endpoints/login.post.py b/endpoints/login.post.py
index df5aa08..2b12b99 100644
--- a/endpoints/login.post.py
+++ b/endpoints/login.post.py
@@ -1,25 +1,125 @@
-from fastapi import APIRouter, Depends, HTTPException
-from core.auth import get_current_user_dummy
+from datetime import datetime, timedelta
+from typing import Optional
+from fastapi import APIRouter, Depends, HTTPException, Response
+from fastapi.security import OAuth2PasswordBearer, OAuth2PasswordRequestForm
+from jose import JWTError, jwt
+from passlib.context import CryptContext
+from pydantic import BaseModel
 from core.database import fake_users_db
 
+# Constants
+SECRET_KEY = "your-secret-key-here"
+ALGORITHM = "HS256"
+ACCESS_TOKEN_EXPIRE_MINUTES = 30
+
+# Password hashing
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+oauth2_scheme = OAuth2PasswordBearer(tokenUrl="login")
+
 router = APIRouter()
 
-@router.post("/login")
-async def login_demo(
-    username: str = "demo",
-    password: str = "password"
+# Models
+class Token(BaseModel):
+    access_token: str
+    token_type: str
+
+class TokenData(BaseModel):
+    username: Optional[str] = None
+
+class User(BaseModel):
+    username: str
+    email: Optional[str] = None
+    disabled: Optional[bool] = None
+
+class UserInDB(User):
+    hashed_password: str
+
+# Helper functions
+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 get_user(db, username: str):
+    if username in db:
+        user_dict = db[username]
+        return UserInDB(**user_dict)
+    return None
+
+def authenticate_user(fake_db, username: str, password: str):
+    user = get_user(fake_db, username)
+    if not user:
+        return False
+    if not verify_password(password, user.hashed_password):
+        return False
+    return user
+
+def create_access_token(data: dict, expires_delta: Optional[timedelta] = None):
+    to_encode = data.copy()
+    if expires_delta:
+        expire = datetime.utcnow() + expires_delta
+    else:
+        expire = datetime.utcnow() + timedelta(minutes=15)
+    to_encode.update({"exp": expire})
+    encoded_jwt = jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
+    return encoded_jwt
+
+@router.post("/login", response_model=Token)
+async def login(
+    response: Response,
+    form_data: OAuth2PasswordRequestForm = Depends()
 ):
-    """Demo login endpoint"""
-    user = fake_users_db.get(username)
-    if not user or user["password"] != password:
-        raise HTTPException(status_code=400, detail="Invalid credentials")
+    """Login endpoint with JWT token generation and cookie storage"""
+    user = authenticate_user(fake_users_db, form_data.username, form_data.password)
+    if not user:
+        raise HTTPException(
+            status_code=401,
+            detail="Incorrect username or password",
+            headers={"WWW-Authenticate": "Bearer"},
+        )
+    access_token_expires = timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES)
+    access_token = create_access_token(
+        data={"sub": user.username}, expires_delta=access_token_expires
+    )
+    
+    # Set JWT token in HTTP-only cookie
+    response.set_cookie(
+        key="access_token",
+        value=f"Bearer {access_token}",
+        httponly=True,
+        max_age=1800,
+        expires=1800,
+        secure=True,
+        samesite="lax"
+    )
     
     return {
-        "message": "Login successful (demo)",
-        "user": username,
-        "token": "dummy_jwt_token_123",
+        "message": "Login successful",
+        "access_token": access_token,
+        "token_type": "bearer",
+        "user": user.username,
         "features": {
             "rate_limit": 100,
-            "expires_in": 3600
+            "expires_in": ACCESS_TOKEN_EXPIRE_MINUTES * 60
         }
     }
+
+async def get_current_user(token: str = Depends(oauth2_scheme)):
+    credentials_exception = HTTPException(
+        status_code=401,
+        detail="Could not validate credentials",
+        headers={"WWW-Authenticate": "Bearer"},
+    )
+    try:
+        payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
+        username: str = payload.get("sub")
+        if username is None:
+            raise credentials_exception
+        token_data = TokenData(username=username)
+    except JWTError:
+        raise credentials_exception
+    user = get_user(fake_users_db, username=token_data.username)
+    if user is None:
+        raise credentials_exception
+    return user
\ No newline at end of file