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// SPDX-License-Identifier: Apache-2.0
// This file is part of Frontier.
//
// Copyright (c) 2022 Parity Technologies (UK) Ltd.
//
// Licensed 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.

//! Core types and inherents for dynamic fee.

#![cfg_attr(not(feature = "std"), no_std)]
#![warn(unused_crate_dependencies)]

use sp_core::U256;
use sp_inherents::InherentIdentifier;
#[cfg(feature = "std")]
use sp_inherents::{Error, InherentData};

pub const INHERENT_IDENTIFIER: InherentIdentifier = *b"dynfee0_";

pub type InherentType = U256;

#[cfg(feature = "std")]
pub struct InherentDataProvider(pub InherentType);

#[cfg(feature = "std")]
#[async_trait::async_trait]
impl sp_inherents::InherentDataProvider for InherentDataProvider {
	async fn provide_inherent_data(&self, inherent_data: &mut InherentData) -> Result<(), Error> {
		inherent_data.put_data(INHERENT_IDENTIFIER, &self.0)
	}

	async fn try_handle_error(
		&self,
		_identifier: &InherentIdentifier,
		_error: &[u8],
	) -> Option<Result<(), Error>> {
		None
	}
}