from fastapi import FastAPI, Request, status
from fastapi.responses import JSONResponse
from sqlalchemy.exc import SQLAlchemyError

from app.core.exceptions import TaskException


def add_exception_handlers(app: FastAPI) -> None:
    """Add global exception handlers to the FastAPI app."""

    @app.exception_handler(TaskException)
    async def task_exception_handler(request: Request, exc: TaskException):
        """Handle Task API exceptions."""
        return JSONResponse(
            status_code=exc.status_code,
            content={"detail": exc.detail},
        )

    @app.exception_handler(SQLAlchemyError)
    async def sqlalchemy_exception_handler(request: Request, exc: SQLAlchemyError):
        """Handle SQLAlchemy exceptions."""
        return JSONResponse(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            content={"detail": "Database error occurred"},
        )

    @app.exception_handler(Exception)
    async def general_exception_handler(request: Request, exc: Exception):
        """Handle general exceptions."""
        return JSONResponse(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            content={"detail": "An unexpected error occurred"},
        )