Initial commit with authentication and routes for registering/login already set up

app/security.py

@@ -0,0 +1,54 @@
+import bcrypt
+from jose import jwt, JWTError
+from datetime import datetime, timedelta
+from fastapi import HTTPException, status
+import os
+
+# Secret and algorithm for JWT
+SECRET_KEY = os.getenv('SECRET_KEY', 'your_jwt_secret_key')  # Ensure this is set in your environment
+ALGORITHM = "HS256"
+ACCESS_TOKEN_EXPIRE_MINUTES = 30
+
+# Hash password using bcrypt directly
+def get_password_hash(password: str) -> str:
+    """Hashes the password using bcrypt."""
+    salt = bcrypt.gensalt()  # Generate a salt
+    hashed_password = bcrypt.hashpw(password.encode('utf-8'), salt)  # Hash the password
+    return hashed_password.decode('utf-8')  # Return as a string
+
+# Verify password using bcrypt directly
+def verify_password(plain_password: str, hashed_password: str) -> bool:
+    """Verifies if the plain password matches the hashed password."""
+    return bcrypt.checkpw(plain_password.encode('utf-8'), hashed_password.encode('utf-8'))
+
+# Create JWT token
+def create_access_token(data: dict, expires_delta: timedelta = None):
+    """Creates a JWT token with expiration time."""
+    to_encode = data.copy()
+    if expires_delta:
+        expire = datetime.utcnow() + expires_delta
+    else:
+        expire = datetime.utcnow() + timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES)
+    to_encode.update({"exp": expire})
+    encoded_jwt = jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
+    return encoded_jwt
+
+# Verify JWT token
+def verify_access_token(token: str):
+    """Verifies the JWT token and returns the user_id if valid."""
+    try:
+        payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
+        user_id: str = payload.get("user_id")
+        if user_id is None:
+            raise HTTPException(
+                status_code=status.HTTP_401_UNAUTHORIZED,
+                detail="Invalid token",
+                headers={"WWW-Authenticate": "Bearer"},
+            )
+        return user_id
+    except JWTError:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Invalid token",
+            headers={"WWW-Authenticate": "Bearer"},
+        )