// Copyright 2024 Moonbeam foundation

// This file is part of Moonbeam.

// Moonbeam is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

// Moonbeam is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License

// along with Moonbeam.  If not, see <http://www.gnu.org/licenses/>.

//! # Lazy Migration Pallet

//!

//! An empty pallet reserved for future migrations.

#![allow(non_camel_case_types)]

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

#[cfg(test)]

pub mod mock;

#[cfg(test)]

mod tests;

// #[cfg(any(test, feature = "runtime-benchmarks"))]

// mod benchmarks;

pub mod weights;

pub use weights::WeightInfo;

use frame_support::pallet;

use frame_support::pallet_prelude::*;

use frame_system::pallet_prelude::*;

pub use pallet::*;

const MAX_CONTRACT_CODE_SIZE: u64 = 25 * 1024;

pub mod pallet {

	use super::*;

	use sp_core::H160;

	/// Pallet for multi block migrations

	pub struct Pallet<T>(PhantomData<T>);

	/// Configuration trait of this pallet.

	#[pallet::config]

	pub trait Config: frame_system::Config + pallet_evm::Config {

		type WeightInfo: WeightInfo;

	}

	pub enum Error<T> {

		ContractMetadataAlreadySet,

		ContractNotExist,

	}

	impl<T: Config> Pallet<T>

	where

		<T as frame_system::Config>::AccountId: Into<H160> + From<H160>,

	{

		#[pallet::call_index(2)]

		#[pallet::weight(Pallet::<T>::create_contract_metadata_weight(MAX_CONTRACT_CODE_SIZE))]

		pub fn create_contract_metadata(

			origin: OriginFor<T>,

			address: H160,

			);

			// Ensure contract exist

			// Construct metadata

		}

	}

	impl<T: Config> Pallet<T> {

			// max entry size of AccountCodesMetadata (full key + value)

			const PROOF_SIZE_CODE_METADATA: u64 = 100;

			// intermediates nodes might be up to 3Kb

			const PROOF_SIZE_INTERMEDIATES_NODES: u64 = 3 * 1024;

			// Account for 2 reads, 1 write

	}

}