use crate::db::error::{BoxedError, UserCreationError};
use crate::db::{Database, User, UserRef};

impl<D: DatabaseInterface> DatabaseInterface for Database<D> {
    async fn get_user(&self, user: &UserRef) -> Result<Option<User>, BoxedError> {
        self.inner.read().await.get_user(user).await
    }

    async fn create_user(
        &mut self,
        user: User,
    ) -> Result<Result<(), UserCreationError>, BoxedError> {
        self.inner.write().await.create_user(user).await
    }

    async fn try_create_user(
        &mut self,
        new_user: User,
        current_user: &User,
    ) -> Result<Result<(), UserCreationError>, BoxedError> {
        self.inner
            .write()
            .await
            .try_create_user(new_user, current_user)
            .await
    }
}

pub trait DatabaseInterface: Clone + Send + Sync + 'static {
    async fn get_user(&self, user: &UserRef) -> Result<Option<User>, BoxedError>;
    async fn create_user(
        &mut self,
        user: User,
    ) -> Result<Result<(), UserCreationError>, BoxedError>;
    #[expect(unused)]
    async fn try_create_user(
        &mut self,
        new_user: User,
        current_user: &User,
    ) -> Result<Result<(), UserCreationError>, BoxedError>;
}