// Copyright 2023 Stability Solutions.
// This file is part of Stability.

// Stability 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.

// Stability 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 Stability.  If not, see <http://www.gnu.org/licenses/>.

//! Testing utilities.

use super::*;

use std::str::FromStr;

use frame_support::{
	construct_runtime, parameter_types,
	traits::{Everything, GenesisBuild},
};
use sp_core::{H160, H256};
use sp_runtime::{
	traits::{BlakeTwo256, IdentityLookup},
	AccountId32,
};

pub type AccountId = AccountId32;
pub type Balance = u128;
pub type BlockNumber = u32;
pub type UncheckedExtrinsic = frame_system::mocking::MockUncheckedExtrinsic<Runtime>;
pub type Block = frame_system::mocking::MockBlock<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 Index = u64;
	type BlockNumber = BlockNumber;
	type RuntimeCall = RuntimeCall;
	type Hash = H256;
	type Hashing = BlakeTwo256;
	type AccountId = AccountId;
	type Lookup = IdentityLookup<Self::AccountId>;
	type Header = sp_runtime::generic::Header<BlockNumber, BlakeTwo256>;
	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>;
}

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 = 1;
}

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 MaxHolds = ();
	type HoldIdentifier = ();
	type FreezeIdentifier = ();
	type MaxFreezes = ();
}

parameter_types! {
	pub MockDefaultFeeToken: H160 = H160::from_str("0x261FB2d971eFBBFd027A9C9Cebb8548Cf7d0d2d5").expect("invalid address");
	pub MeaninglessTokenAddress:H160 = H160::from_str("0xdAC17F958D2ee523a2206206994597C13D831ec7").expect("invalid address");
	pub MockDefaultTokenBalanceSlot:H256 = H256::from_low_u64_be(0);
}

impl crate::Config for Runtime {}

// Configure a mock runtime to test the pallet.
construct_runtime!(
	pub enum Runtime where
		Block = Block,
		NodeBlock = Block,
		UncheckedExtrinsic = UncheckedExtrinsic,
	{
		System: frame_system::{Pallet, Call, Config, Storage, Event<T>},
		Balances: pallet_balances::{Pallet, Call, Storage, Config<T>, Event<T>},
		Timestamp: pallet_timestamp::{Pallet, Call, Storage, Inherent},
		SupportedTokensManager: crate,
	}
);

/// ERC20 metadata for the native token.
pub(crate) struct ExtBuilder {}

impl Default for ExtBuilder {
	fn default() -> ExtBuilder {
		ExtBuilder {}
	}
}

impl ExtBuilder {
	pub(crate) fn build(self) -> sp_io::TestExternalities {
		let mut t = frame_system::GenesisConfig::default()
			.build_storage::<Runtime>()
			.expect("Frame system builds valid default genesis config");

		GenesisBuild::<Runtime>::assimilate_storage(
			&crate::GenesisConfig {
				initial_default_token: MockDefaultFeeToken::get(),
				initial_default_token_slot: MockDefaultTokenBalanceSlot::get(),
			},
			&mut t,
		)
		.expect("genesis config can be assimilated");

		let mut ext = sp_io::TestExternalities::new(t);
		ext.execute_with(|| System::set_block_number(1));
		ext
	}
}
