from fastapi import APIRouter, Depends, HTTPException

users = []  # In-memory storage

router = APIRouter()

@router.post("/logout")
async def logout_demo(
    username: str = "logged_in_user"
):
    """Demo logout endpoint"""
    if request.method != "POST":
        raise HTTPException(status_code=405, detail="Method Not Allowed")

    user = next((u for u in users if u["username"] == username), None)
    if not user:
        raise HTTPException(status_code=400, detail="Invalid user")

    # Perform logout logic (e.g., invalidate token)

    return {
        "message": "Logout successful",
        "method": "POST",
        "_verb": "post"
    }