// This file is part of Substrate.

// Copyright (C) 2018-2021 Parity Technologies (UK) Ltd.
// SPDX-License-Identifier: Apache-2.0

// 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.

//! Test utilities

#![cfg(test)]

use crate as pallet_aura;
use frame_support::{
	parameter_types,
	traits::{DisabledValidators, GenesisBuild},
};
use sp_consensus_aura::{ed25519::AuthorityId, AuthorityIndex};
use sp_core::H256;
use sp_runtime::{
	testing::{Header, UintAuthorityId},
	traits::IdentityLookup,
};
use sp_std::cell::RefCell;

type UncheckedExtrinsic = frame_system::mocking::MockUncheckedExtrinsic<Test>;
type Block = frame_system::mocking::MockBlock<Test>;

frame_support::construct_runtime!(
	pub enum Test where
		Block = Block,
		NodeBlock = Block,
		UncheckedExtrinsic = UncheckedExtrinsic,
	{
		System: frame_system::{Pallet, Call, Config, Storage, Event<T>},
		Timestamp: pallet_timestamp::{Pallet, Call, Storage, Inherent},
		Aura: pallet_aura::{Pallet, Storage, Config<T>},
	}
);

parameter_types! {
	pub const BlockHashCount: u64 = 250;
	pub BlockWeights: frame_system::limits::BlockWeights =
		frame_system::limits::BlockWeights::simple_max(1024);
	pub const MinimumPeriod: u64 = 1;
}

impl frame_system::Config for Test {
	type BaseCallFilter = frame_support::traits::Everything;
	type BlockWeights = ();
	type BlockLength = ();
	type DbWeight = ();
	type Origin = Origin;
	type Index = u64;
	type BlockNumber = u64;
	type Call = Call;
	type Hash = H256;
	type Hashing = ::sp_runtime::traits::BlakeTwo256;
	type AccountId = u64;
	type Lookup = IdentityLookup<Self::AccountId>;
	type Header = Header;
	type Event = Event;
	type BlockHashCount = BlockHashCount;
	type Version = ();
	type PalletInfo = PalletInfo;
	type AccountData = ();
	type OnNewAccount = ();
	type OnKilledAccount = ();
	type SystemWeightInfo = ();
	type SS58Prefix = ();
	type OnSetCode = ();
}

impl pallet_timestamp::Config for Test {
	type Moment = u64;
	type OnTimestampSet = Aura;
	type MinimumPeriod = MinimumPeriod;
	type WeightInfo = ();
}

parameter_types! {
	pub const MaxAuthorities: u32 = 10;
}

thread_local! {
	static DISABLED_VALIDATORS: RefCell<Vec<AuthorityIndex>> = RefCell::new(Default::default());
}

pub struct MockDisabledValidators;

impl MockDisabledValidators {
	pub fn disable_validator(index: AuthorityIndex) {
		DISABLED_VALIDATORS.with(|v| {
			let mut disabled = v.borrow_mut();
			if let Err(i) = disabled.binary_search(&index) {
				disabled.insert(i, index);
			}
		})
	}
}

impl DisabledValidators for MockDisabledValidators {
	fn is_disabled(index: AuthorityIndex) -> bool {
		DISABLED_VALIDATORS.with(|v| v.borrow().binary_search(&index).is_ok())
	}
}

impl pallet_aura::Config for Test {
	type AuthorityId = AuthorityId;
	type DisabledValidators = MockDisabledValidators;
	type MaxAuthorities = MaxAuthorities;
}

pub fn new_test_ext(authorities: Vec<u64>) -> sp_io::TestExternalities {
	let mut t = frame_system::GenesisConfig::default().build_storage::<Test>().unwrap();
	pallet_aura::GenesisConfig::<Test> {
		authorities: authorities.into_iter().map(|a| UintAuthorityId(a).to_public_key()).collect(),
	}
	.assimilate_storage(&mut t)
	.unwrap();
	t.into()
}