// Copyright 2019-2022 PureStake Inc.

// 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/>.

//! Testing utilities.

use super::*;

use frame_support::{construct_runtime, parameter_types, traits::Everything, weights::Weight};

use pallet_evm::{EnsureAddressNever, EnsureAddressRoot};

use precompile_utils::{precompile_set::*, testing::MockAccount};

use sp_core::{ConstU32, H256, U256};

use sp_runtime::{

	traits::{BlakeTwo256, IdentityLookup},

	BuildStorage,

};

pub type AccountId = MockAccount;

pub type Balance = u128;

pub type Block = frame_system::mocking::MockBlockU32<Runtime>;

parameter_types! {

	pub const BlockHashCount: u32 = 250;

	pub const SS58Prefix: u8 = 42;

}

impl frame_system::Config for Runtime {

	type BaseCallFilter = Everything;

	type DbWeight = ();

	type RuntimeOrigin = RuntimeOrigin;

	type RuntimeTask = RuntimeTask;

	type Nonce = u64;

	type Block = Block;

	type RuntimeCall = RuntimeCall;

	type Hash = H256;

	type Hashing = BlakeTwo256;

	type AccountId = AccountId;

	type Lookup = IdentityLookup<Self::AccountId>;

	type RuntimeEvent = RuntimeEvent;

	type BlockHashCount = BlockHashCount;

	type Version = ();

	type PalletInfo = PalletInfo;

	type AccountData = pallet_balances::AccountData<Balance>;

	type OnNewAccount = ();

	type OnKilledAccount = ();

	type SystemWeightInfo = ();

	type BlockWeights = ();

	type BlockLength = ();

	type SS58Prefix = SS58Prefix;

	type OnSetCode = ();

	type MaxConsumers = frame_support::traits::ConstU32<16>;

	type SingleBlockMigrations = ();

	type MultiBlockMigrator = ();

	type PreInherents = ();

	type PostInherents = ();

	type PostTransactions = ();

}

parameter_types! {

	pub const MinimumPeriod: u64 = 5;

}

impl pallet_timestamp::Config for Runtime {

	type Moment = u64;

	type OnTimestampSet = ();

	type MinimumPeriod = MinimumPeriod;

	type WeightInfo = ();

}

parameter_types! {

	pub const ExistentialDeposit: u128 = 0;

}

impl pallet_balances::Config for Runtime {

	type MaxReserves = ();

	type ReserveIdentifier = ();

	type MaxLocks = ();

	type Balance = Balance;

	type RuntimeEvent = RuntimeEvent;

	type DustRemoval = ();

	type ExistentialDeposit = ExistentialDeposit;

	type AccountStore = System;

	type WeightInfo = ();

	type RuntimeHoldReason = ();

	type FreezeIdentifier = ();

	type MaxFreezes = ();

	type RuntimeFreezeReason = ();

}

pub type Precompiles<R> = PrecompileSetBuilder<

	R,

	(PrecompileAt<AddressU64<1>, Erc20BalancesPrecompile<R, NativeErc20Metadata>>,),

>;

pub type PCall = Erc20BalancesPrecompileCall<Runtime, NativeErc20Metadata, ()>;

const MAX_POV_SIZE: u64 = 5 * 1024 * 1024;

/// Block storage limit in bytes. Set to 40 KB.

const BLOCK_STORAGE_LIMIT: u64 = 40 * 1024;

parameter_types! {

	pub BlockGasLimit: U256 = U256::from(u64::MAX);

	pub PrecompilesValue: Precompiles<Runtime> = Precompiles::new();

	pub const WeightPerGas: Weight = Weight::from_parts(1, 0);

	pub GasLimitPovSizeRatio: u64 = {

		let block_gas_limit = BlockGasLimit::get().min(u64::MAX.into()).low_u64();

		block_gas_limit.saturating_div(MAX_POV_SIZE)

	};

	pub GasLimitStorageGrowthRatio: u64 = {

		let block_gas_limit = BlockGasLimit::get().min(u64::MAX.into()).low_u64();

		block_gas_limit.saturating_div(BLOCK_STORAGE_LIMIT)

	};

}

impl pallet_evm::Config for Runtime {

	type FeeCalculator = ();

	type GasWeightMapping = pallet_evm::FixedGasWeightMapping<Self>;

	type WeightPerGas = WeightPerGas;

	type CallOrigin = EnsureAddressRoot<AccountId>;

	type WithdrawOrigin = EnsureAddressNever<AccountId>;

	type AddressMapping = AccountId;

	type Currency = Balances;

	type RuntimeEvent = RuntimeEvent;

	type Runner = pallet_evm::runner::stack::Runner<Self>;

	type PrecompilesType = Precompiles<Self>;

	type PrecompilesValue = PrecompilesValue;

	type ChainId = ();

	type OnChargeTransaction = ();

	type BlockGasLimit = BlockGasLimit;

	type BlockHashMapping = pallet_evm::SubstrateBlockHashMapping<Self>;

	type FindAuthor = ();

	type OnCreate = ();

	type GasLimitPovSizeRatio = GasLimitPovSizeRatio;

	type SuicideQuickClearLimit = ConstU32<0>;

	type GasLimitStorageGrowthRatio = GasLimitStorageGrowthRatio;

	type Timestamp = Timestamp;

	type WeightInfo = pallet_evm::weights::SubstrateWeight<Runtime>;

}

// Configure a mock runtime to test the pallet.

/// ERC20 metadata for the native token.

pub struct NativeErc20Metadata;

impl Erc20Metadata for NativeErc20Metadata {

	/// Returns the name of the token.

	/// Returns the symbol of the token.

	/// Returns the decimals places of the token.

	/// Must return `true` only if it represents the main native currency of

	/// the network. It must be the currency used in `pallet_evm`.

}

pub(crate) struct ExtBuilder {

	// endowed accounts with balances

	balances: Vec<(AccountId, Balance)>,

}

impl Default for ExtBuilder {

}

impl ExtBuilder {

}