// This file is part of Substrate.

// Copyright (C) 2020-2021 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

use super::*;
use frame_support::{parameter_types, weights::Weight};
use sp_core::H256;
use sp_runtime::{traits::{BlakeTwo256, IdentityLookup}, testing::Header};
use sp_io;
use crate as sudo;
use frame_support::traits::Filter;
use frame_system::limits;

// Logger module to track execution.
pub mod logger {
	use super::*;
	use frame_system::ensure_root;

	pub trait Config: frame_system::Config {
		type Event: From<Event<Self>> + Into<<Self as frame_system::Config>::Event>;
	}

	decl_storage! {
		trait Store for Module<T: Config> as Logger {
			AccountLog get(fn account_log): Vec<T::AccountId>;
			I32Log get(fn i32_log): Vec<i32>;
		}
	}

	decl_event! {
		pub enum Event<T> where AccountId = <T as frame_system::Config>::AccountId {
			AppendI32(i32, Weight),
			AppendI32AndAccount(AccountId, i32, Weight),
		}
	}

	decl_module! {
		pub struct Module<T: Config> for enum Call where origin: <T as frame_system::Config>::Origin {
			fn deposit_event() = default;

			#[weight = *weight]
			fn privileged_i32_log(origin, i: i32, weight: Weight){
				// Ensure that the `origin` is `Root`.
				ensure_root(origin)?;
				<I32Log>::append(i);
				Self::deposit_event(RawEvent::AppendI32(i, weight));
			}

			#[weight = *weight]
			fn non_privileged_log(origin, i: i32, weight: Weight){
				// Ensure that the `origin` is some signed account.
				let sender = ensure_signed(origin)?;
				<I32Log>::append(i);
				<AccountLog<T>>::append(sender.clone());
				Self::deposit_event(RawEvent::AppendI32AndAccount(sender, i, weight));
			}
		}
	}
}

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::{Module, Call, Config, Storage, Event<T>},
		Sudo: sudo::{Module, Call, Config<T>, Storage, Event<T>},
		Logger: logger::{Module, Call, Storage, Event<T>},
	}
);

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

pub struct BlockEverything;
impl Filter<Call> for BlockEverything {
	fn filter(_: &Call) -> bool {
		false
	}
}

impl frame_system::Config for Test {
	type BaseCallFilter = BlockEverything;
	type BlockWeights = ();
	type BlockLength = ();
	type DbWeight = ();
	type Origin = Origin;
	type Call = Call;
	type Index = u64;
	type BlockNumber = u64;
	type Hash = H256;
	type Hashing = 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 = ();
}

// Implement the logger module's `Config` on the Test runtime.
impl logger::Config for Test {
	type Event = Event;
}

// Implement the sudo module's `Config` on the Test runtime.
impl Config for Test {
	type Event = Event;
	type Call = Call;
}

// New types for dispatchable functions.
pub type SudoCall = sudo::Call<Test>;
pub type LoggerCall = logger::Call<Test>;

// Build test environment by setting the root `key` for the Genesis.
pub fn new_test_ext(root_key: u64) -> sp_io::TestExternalities {
	let mut t = frame_system::GenesisConfig::default().build_storage::<Test>().unwrap();
	sudo::GenesisConfig::<Test>{
		key: root_key,
	}.assimilate_storage(&mut t).unwrap();
	t.into()
}
