/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

//! Configuration provider traits.

use super::error::ConfigurationError;
use serde::{Serialize, de::DeserializeOwned};
use std::fmt::Display;
use std::future::Future;

/// Type alias for configuration that can be serialized, deserialized, has defaults, and can be displayed.
pub trait ConfigurationType: Serialize + DeserializeOwned + Default + Display {}
impl<T: Serialize + DeserializeOwned + Default + Display> ConfigurationType for T {}

/// Trait for configuration providers that can load a configuration.
pub trait ConfigProvider {
    fn load_config<T: ConfigurationType>(
        &self,
    ) -> impl Future<Output = Result<T, ConfigurationError>>;
}
