use anyhow::{bail, Result};
use turbo_tasks::{Completion, Vc};
use turbopack_core::module::Modules;

use crate::route::{Endpoint, WrittenEndpoint};

#[turbo_tasks::value]
pub struct EmptyEndpoint;

#[turbo_tasks::value_impl]
impl EmptyEndpoint {
    #[turbo_tasks::function]
    pub fn new() -> Vc<Self> {
        EmptyEndpoint.cell()
    }
}

#[turbo_tasks::value_impl]
impl Endpoint for EmptyEndpoint {
    #[turbo_tasks::function]
    fn write_to_disk(self: Vc<Self>) -> Result<Vc<WrittenEndpoint>> {
        bail!("Empty endpoint can't be written to disk")
    }

    #[turbo_tasks::function]
    fn server_changed(self: Vc<Self>) -> Vc<Completion> {
        Completion::new()
    }

    #[turbo_tasks::function]
    fn client_changed(self: Vc<Self>) -> Vc<Completion> {
        Completion::new()
    }

    #[turbo_tasks::function]
    fn root_modules(self: Vc<Self>) -> Vc<Modules> {
        Vc::cell(vec![])
    }
}