from fastapi import FastAPI
from core.config import settings
from api.router import api_router
# 1. Import the exception registrar
from core.exceptions import register_exception_handlers

app = FastAPI(title=settings.PROJECT_NAME)

# 2. Register exception handlers (Add this line)
register_exception_handlers(app)

app.include_router(api_router, prefix=settings.API_STR)

from fastapi import APIRouter
from api.endpoints import health, demo_error  # Import demo_error

api_router = APIRouter()

api_router.include_router(health.router, tags=["Health"])
# Add demo error router
api_router.include_router(demo_error.router, prefix="/demo", tags=["Demo Errors"])

from fastapi import APIRouter
from core.exceptions import CustomAppException

router = APIRouter()

@router.get("/users/{user_id}")
async def get_user(user_id: int):
    if user_id <= 0:
        # Throw custom error with custom status code
        raise CustomAppException(
            message="Invalid User ID provided.",
            status_code=400
        )
    return {"user_id": user_id}

{
  "success": false,
  "error": "ApplicationError",
  "message": "Invalid User ID provided.",
  "path": "/api/users/-1"
}