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//! Scope configurator for a binding for types inside of a [`IAsyncDIContainer`].
//!
//! [`IAsyncDIContainer`]: crate::di_container::asynchronous::IAsyncDIContainer
use std::marker::PhantomData;
use std::sync::Arc;
use crate::di_container::asynchronous::binding::when_configurator::AsyncBindingWhenConfigurator;
use crate::di_container::asynchronous::IAsyncDIContainer;
use crate::errors::async_di_container::AsyncBindingScopeConfiguratorError;
use crate::interfaces::async_injectable::AsyncInjectable;
use crate::provider::r#async::{AsyncSingletonProvider, AsyncTransientTypeProvider};
use crate::ptr::ThreadsafeSingletonPtr;
/// Scope configurator for a binding for type 'Interface' inside a [`IAsyncDIContainer`].
///
/// [`IAsyncDIContainer`]: crate::di_container::asynchronous::IAsyncDIContainer
pub struct AsyncBindingScopeConfigurator<Interface, Implementation, DIContainerType>
where
Interface: 'static + ?Sized + Send + Sync,
Implementation: AsyncInjectable<DIContainerType>,
DIContainerType: IAsyncDIContainer,
{
di_container: Arc<DIContainerType>,
interface_phantom: PhantomData<Interface>,
implementation_phantom: PhantomData<Implementation>,
}
impl<Interface, Implementation, DIContainerType>
AsyncBindingScopeConfigurator<Interface, Implementation, DIContainerType>
where
Interface: 'static + ?Sized + Send + Sync,
Implementation: AsyncInjectable<DIContainerType>,
DIContainerType: IAsyncDIContainer,
{
pub(crate) fn new(di_container: Arc<DIContainerType>) -> Self
{
Self {
di_container,
interface_phantom: PhantomData,
implementation_phantom: PhantomData,
}
}
/// Configures the binding to be in a transient scope.
///
/// This is the default.
pub async fn in_transient_scope(
&self,
) -> AsyncBindingWhenConfigurator<Interface, DIContainerType>
{
self.di_container
.set_binding::<Interface>(
None,
Box::new(
AsyncTransientTypeProvider::<Implementation, DIContainerType>::new(),
),
)
.await;
AsyncBindingWhenConfigurator::new(self.di_container.clone())
}
/// Configures the binding to be in a singleton scope.
///
/// # Errors
/// Will return Err if resolving the implementation fails.
pub async fn in_singleton_scope(
&self,
) -> Result<
AsyncBindingWhenConfigurator<Interface, DIContainerType>,
AsyncBindingScopeConfiguratorError,
>
{
let singleton: ThreadsafeSingletonPtr<Implementation> =
ThreadsafeSingletonPtr::from(
Implementation::resolve(&self.di_container, Vec::new())
.await
.map_err(
AsyncBindingScopeConfiguratorError::SingletonResolveFailed,
)?,
);
self.di_container
.set_binding::<Interface>(
None,
Box::new(AsyncSingletonProvider::new(singleton)),
)
.await;
Ok(AsyncBindingWhenConfigurator::new(self.di_container.clone()))
}
}
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