lib.rs

// This file is part of Substrate.

// Copyright (C) 2018-2022 Parity Technologies (UK) Ltd.
// SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0

// This program 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.

// This program 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 this program. If not, see <https://www.gnu.org/licenses/>.

//! The Substrate runtime. This can be compiled with `#[no_std]`, ready for Wasm.

#![cfg_attr(not(feature = "std"), no_std)]
// `construct_runtime!` does a lot of recursion and requires us to increase the limit to 512.
#![recursion_limit = "512"]

use codec::{Decode, Encode, MaxEncodedLen};
use frame_election_provider_support::{
	onchain, BalancingConfig, ElectionDataProvider, SequentialPhragmen, VoteWeight,
};
use frame_support::{
	construct_runtime,
	pallet_prelude::Get,
	parameter_types,
	traits::{
		AsEnsureOriginWithArg, ConstU128, ConstU16, ConstU32, Currency, EitherOfDiverse,
		EqualPrivilegeOnly, Everything, Imbalance, InstanceFilter, KeyOwnerProofSystem,
		LockIdentifier, Nothing, OnUnbalanced, U128CurrencyToVote,
	},
	weights::{
		constants::{BlockExecutionWeight, ExtrinsicBaseWeight, RocksDbWeight, WEIGHT_PER_SECOND},
		ConstantMultiplier, DispatchClass, IdentityFee, Weight,
	},
	PalletId, RuntimeDebug,
};
use frame_system::{
	limits::{BlockLength, BlockWeights},
	EnsureRoot, EnsureRootWithSuccess, EnsureSigned,
};
pub use node_primitives::{AccountId, Signature};
use node_primitives::{AccountIndex, Balance, BlockNumber, Hash, Index, Moment};
use pallet_election_provider_multi_phase::SolutionAccuracyOf;
use pallet_grandpa::{
	fg_primitives, AuthorityId as GrandpaId, AuthorityList as GrandpaAuthorityList,
};
use pallet_im_online::sr25519::AuthorityId as ImOnlineId;
use pallet_session::historical::{self as pallet_session_historical};
pub use pallet_transaction_payment::{CurrencyAdapter, Multiplier, TargetedFeeAdjustment};
use pallet_transaction_payment::{FeeDetails, RuntimeDispatchInfo};
use sp_api::impl_runtime_apis;
use sp_authority_discovery::AuthorityId as AuthorityDiscoveryId;
use sp_core::{crypto::KeyTypeId, OpaqueMetadata};
use sp_inherents::{CheckInherentsResult, InherentData};
use sp_runtime::{
	create_runtime_str,
	curve::PiecewiseLinear,
	generic, impl_opaque_keys,
	traits::{
		self, BlakeTwo256, Block as BlockT, ConvertInto, NumberFor, OpaqueKeys,
		SaturatedConversion, StaticLookup,
	},
	transaction_validity::{TransactionPriority, TransactionSource, TransactionValidity},
	ApplyExtrinsicResult, FixedPointNumber, FixedU128, Perbill, Percent, Permill, Perquintill,
};
use sp_std::prelude::*;
#[cfg(any(feature = "std", test))]
use sp_version::NativeVersion;
use sp_version::RuntimeVersion;
use static_assertions::const_assert;

#[cfg(any(feature = "std", test))]
pub use frame_system::Call as SystemCall;
#[cfg(any(feature = "std", test))]
pub use pallet_balances::Call as BalancesCall;
#[cfg(any(feature = "std", test))]
pub use pallet_staking::StakerStatus;
#[cfg(any(feature = "std", test))]
pub use pallet_sudo::Call as SudoCall;
#[cfg(any(feature = "std", test))]
pub use sp_runtime::BuildStorage;

/// Implementations of some helper traits passed into runtime modules as associated types.
pub mod impls;
#[cfg(not(feature = "runtime-benchmarks"))]
use impls::AllianceIdentityVerifier;
use impls::{AllianceProposalProvider, Author, CreditToBlockAuthor};

/// Constant values used within the runtime.
pub mod constants;
use constants::{currency::*, time::*};
use sp_runtime::generic::Era;

/// Generated voter bag information.
mod voter_bags;

// Make the WASM binary available.
#[cfg(feature = "std")]
include!(concat!(env!("OUT_DIR"), "/wasm_binary.rs"));

/// Wasm binary unwrapped. If built with `SKIP_WASM_BUILD`, the function panics.
#[cfg(feature = "std")]
pub fn wasm_binary_unwrap() -> &'static [u8] {
	WASM_BINARY.expect(
		"Development wasm binary is not available. This means the client is built with \
		 `SKIP_WASM_BUILD` flag and it is only usable for production chains. Please rebuild with \
		 the flag disabled.",
	)
}

/// Runtime version.
#[sp_version::runtime_version]
pub const VERSION: RuntimeVersion = RuntimeVersion {
	spec_name: create_runtime_str!("node"),
	impl_name: create_runtime_str!("substrate-node"),
	authoring_version: 10,
	// Per convention: if the runtime behavior changes, increment spec_version
	// and set impl_version to 0. If only runtime
	// implementation changes and behavior does not, then leave spec_version as
	// is and increment impl_version.
	spec_version: 268,
	impl_version: 0,
	apis: RUNTIME_API_VERSIONS,
	transaction_version: 2,
	state_version: 1,
};

/// The BABE epoch configuration at genesis.
pub const BABE_GENESIS_EPOCH_CONFIG: sp_consensus_babe::BabeEpochConfiguration =
	sp_consensus_babe::BabeEpochConfiguration {
		c: PRIMARY_PROBABILITY,
		allowed_slots: sp_consensus_babe::AllowedSlots::PrimaryAndSecondaryPlainSlots,
	};

/// Native version.
#[cfg(any(feature = "std", test))]
pub fn native_version() -> NativeVersion {
	NativeVersion { runtime_version: VERSION, can_author_with: Default::default() }
}

type NegativeImbalance = <Balances as Currency<AccountId>>::NegativeImbalance;

pub struct DealWithFees;
impl OnUnbalanced<NegativeImbalance> for DealWithFees {
	fn on_unbalanceds<B>(mut fees_then_tips: impl Iterator<Item = NegativeImbalance>) {
		if let Some(fees) = fees_then_tips.next() {
			// for fees, 80% to treasury, 20% to author
			let mut split = fees.ration(80, 20);
			if let Some(tips) = fees_then_tips.next() {
				// for tips, if any, 80% to treasury, 20% to author (though this can be anything)
				tips.ration_merge_into(80, 20, &mut split);
			}
			Treasury::on_unbalanced(split.0);
			Author::on_unbalanced(split.1);
		}
	}
}

/// We assume that ~10% of the block weight is consumed by `on_initialize` handlers.
/// This is used to limit the maximal weight of a single extrinsic.
const AVERAGE_ON_INITIALIZE_RATIO: Perbill = Perbill::from_percent(10);
/// We allow `Normal` extrinsics to fill up the block up to 75%, the rest can be used
/// by  Operational  extrinsics.
const NORMAL_DISPATCH_RATIO: Perbill = Perbill::from_percent(75);
/// We allow for 2 seconds of compute with a 6 second average block time.
const MAXIMUM_BLOCK_WEIGHT: Weight = WEIGHT_PER_SECOND.saturating_mul(2);

parameter_types! {
	pub const BlockHashCount: BlockNumber = 2400;
	pub const Version: RuntimeVersion = VERSION;
	pub RuntimeBlockLength: BlockLength =
		BlockLength::max_with_normal_ratio(5 * 1024 * 1024, NORMAL_DISPATCH_RATIO);
	pub RuntimeBlockWeights: BlockWeights = BlockWeights::builder()
		.base_block(BlockExecutionWeight::get())
		.for_class(DispatchClass::all(), |weights| {
			weights.base_extrinsic = ExtrinsicBaseWeight::get();
		})
		.for_class(DispatchClass::Normal, |weights| {
			weights.max_total = Some(NORMAL_DISPATCH_RATIO * MAXIMUM_BLOCK_WEIGHT);
		})
		.for_class(DispatchClass::Operational, |weights| {
			weights.max_total = Some(MAXIMUM_BLOCK_WEIGHT);
			// Operational transactions have some extra reserved space, so that they
			// are included even if block reached `MAXIMUM_BLOCK_WEIGHT`.
			weights.reserved = Some(
				MAXIMUM_BLOCK_WEIGHT - NORMAL_DISPATCH_RATIO * MAXIMUM_BLOCK_WEIGHT
			);
		})
		.avg_block_initialization(AVERAGE_ON_INITIALIZE_RATIO)
		.build_or_panic();
}

const_assert!(NORMAL_DISPATCH_RATIO.deconstruct() >= AVERAGE_ON_INITIALIZE_RATIO.deconstruct());

impl frame_system::Config for Runtime {
	type BaseCallFilter = Everything;
	type BlockWeights = RuntimeBlockWeights;
	type BlockLength = RuntimeBlockLength;
	type DbWeight = RocksDbWeight;
	type Origin = Origin;
	type Call = Call;
	type Index = Index;
	type BlockNumber = BlockNumber;
	type Hash = Hash;
	type Hashing = BlakeTwo256;
	type AccountId = AccountId;
	type Lookup = Indices;
	type Header = generic::Header<BlockNumber, BlakeTwo256>;
	type Event = Event;
	type BlockHashCount = BlockHashCount;
	type Version = Version;
	type PalletInfo = PalletInfo;
	type AccountData = pallet_balances::AccountData<Balance>;
	type OnNewAccount = ();
	type OnKilledAccount = ();
	type SystemWeightInfo = frame_system::weights::SubstrateWeight<Runtime>;
	type SS58Prefix = ConstU16<42>;
	type OnSetCode = ();
	type MaxConsumers = ConstU32<16>;
}

impl pallet_randomness_collective_flip::Config for Runtime {}

impl pallet_utility::Config for Runtime {
	type Event = Event;
	type Call = Call;
	type PalletsOrigin = OriginCaller;
	type WeightInfo = pallet_utility::weights::SubstrateWeight<Runtime>;
}

parameter_types! {
	// One storage item; key size is 32; value is size 4+4+16+32 bytes = 56 bytes.
	pub const DepositBase: Balance = deposit(1, 88);
	// Additional storage item size of 32 bytes.
	pub const DepositFactor: Balance = deposit(0, 32);
}

impl pallet_multisig::Config for Runtime {
	type Event = Event;
	type Call = Call;
	type Currency = Balances;
	type DepositBase = DepositBase;
	type DepositFactor = DepositFactor;
	type MaxSignatories = ConstU16<100>;
	type WeightInfo = pallet_multisig::weights::SubstrateWeight<Runtime>;
}

parameter_types! {
	// One storage item; key size 32, value size 8; .
	pub const ProxyDepositBase: Balance = deposit(1, 8);
	// Additional storage item size of 33 bytes.
	pub const ProxyDepositFactor: Balance = deposit(0, 33);
	pub const AnnouncementDepositBase: Balance = deposit(1, 8);
	pub const AnnouncementDepositFactor: Balance = deposit(0, 66);
}

/// The type used to represent the kinds of proxying allowed.
#[derive(
	Copy,
	Clone,
	Eq,
	PartialEq,
	Ord,
	PartialOrd,
	Encode,
	Decode,
	RuntimeDebug,
	MaxEncodedLen,
	scale_info::TypeInfo,
)]
pub enum ProxyType {
	Any,
	NonTransfer,
	Governance,
	Staking,
}
impl Default for ProxyType {
	fn default() -> Self {
		Self::Any
	}
}
impl InstanceFilter<Call> for ProxyType {
	fn filter(&self, c: &Call) -> bool {
		match self {
			ProxyType::Any => true,
			ProxyType::NonTransfer => !matches!(
				c,
				Call::Balances(..) |
					Call::Assets(..) | Call::Uniques(..) |
					Call::Vesting(pallet_vesting::Call::vested_transfer { .. }) |
					Call::Indices(pallet_indices::Call::transfer { .. })
			),
			ProxyType::Governance => matches!(
				c,
				Call::Democracy(..) |
					Call::Council(..) | Call::Society(..) |
					Call::TechnicalCommittee(..) |
					Call::Elections(..) | Call::Treasury(..)
			),
			ProxyType::Staking => matches!(c, Call::Staking(..)),
		}
	}
	fn is_superset(&self, o: &Self) -> bool {
		match (self, o) {
			(x, y) if x == y => true,
			(ProxyType::Any, _) => true,
			(_, ProxyType::Any) => false,
			(ProxyType::NonTransfer, _) => true,
			_ => false,
		}
	}
}

impl pallet_proxy::Config for Runtime {
	type Event = Event;
	type Call = Call;
	type Currency = Balances;
	type ProxyType = ProxyType;
	type ProxyDepositBase = ProxyDepositBase;
	type ProxyDepositFactor = ProxyDepositFactor;
	type MaxProxies = ConstU32<32>;
	type WeightInfo = pallet_proxy::weights::SubstrateWeight<Runtime>;
	type MaxPending = ConstU32<32>;
	type CallHasher = BlakeTwo256;
	type AnnouncementDepositBase = AnnouncementDepositBase;
	type AnnouncementDepositFactor = AnnouncementDepositFactor;
}

parameter_types! {
	pub MaximumSchedulerWeight: Weight = Perbill::from_percent(80) *
		RuntimeBlockWeights::get().max_block;
	// Retry a scheduled item every 10 blocks (1 minute) until the preimage exists.
	pub const NoPreimagePostponement: Option<u32> = Some(10);
}

impl pallet_scheduler::Config for Runtime {
	type Event = Event;
	type Origin = Origin;
	type PalletsOrigin = OriginCaller;
	type Call = Call;
	type MaximumWeight = MaximumSchedulerWeight;
	type ScheduleOrigin = EnsureRoot<AccountId>;
	type MaxScheduledPerBlock = ConstU32<50>;
	type WeightInfo = pallet_scheduler::weights::SubstrateWeight<Runtime>;
	type OriginPrivilegeCmp = EqualPrivilegeOnly;
	type PreimageProvider = Preimage;
	type NoPreimagePostponement = NoPreimagePostponement;
}

parameter_types! {
	pub const PreimageMaxSize: u32 = 4096 * 1024;
	pub const PreimageBaseDeposit: Balance = 1 * DOLLARS;
	// One cent: $10,000 / MB
	pub const PreimageByteDeposit: Balance = 1 * CENTS;
}

impl pallet_preimage::Config for Runtime {
	type WeightInfo = pallet_preimage::weights::SubstrateWeight<Runtime>;
	type Event = Event;
	type Currency = Balances;
	type ManagerOrigin = EnsureRoot<AccountId>;
	type MaxSize = PreimageMaxSize;
	type BaseDeposit = PreimageBaseDeposit;
	type ByteDeposit = PreimageByteDeposit;
}

parameter_types! {
	// NOTE: Currently it is not possible to change the epoch duration after the chain has started.
	//       Attempting to do so will brick block production.
	pub const EpochDuration: u64 = EPOCH_DURATION_IN_SLOTS;
	pub const ExpectedBlockTime: Moment = MILLISECS_PER_BLOCK;
	pub const ReportLongevity: u64 =
		BondingDuration::get() as u64 * SessionsPerEra::get() as u64 * EpochDuration::get();
}

impl pallet_babe::Config for Runtime {
	type EpochDuration = EpochDuration;
	type ExpectedBlockTime = ExpectedBlockTime;
	type EpochChangeTrigger = pallet_babe::ExternalTrigger;
	type DisabledValidators = Session;

	type KeyOwnerProofSystem = Historical;

	type KeyOwnerProof = <Self::KeyOwnerProofSystem as KeyOwnerProofSystem<(
		KeyTypeId,
		pallet_babe::AuthorityId,
	)>>::Proof;

	type KeyOwnerIdentification = <Self::KeyOwnerProofSystem as KeyOwnerProofSystem<(
		KeyTypeId,
		pallet_babe::AuthorityId,
	)>>::IdentificationTuple;

	type HandleEquivocation =
		pallet_babe::EquivocationHandler<Self::KeyOwnerIdentification, Offences, ReportLongevity>;

	type WeightInfo = ();
	type MaxAuthorities = MaxAuthorities;
}

parameter_types! {
	pub const IndexDeposit: Balance = 1 * DOLLARS;
}

impl pallet_indices::Config for Runtime {
	type AccountIndex = AccountIndex;
	type Currency = Balances;
	type Deposit = IndexDeposit;
	type Event = Event;
	type WeightInfo = pallet_indices::weights::SubstrateWeight<Runtime>;
}

parameter_types! {
	pub const ExistentialDeposit: Balance = 1 * DOLLARS;
	// For weight estimation, we assume that the most locks on an individual account will be 50.
	// This number may need to be adjusted in the future if this assumption no longer holds true.
	pub const MaxLocks: u32 = 50;
	pub const MaxReserves: u32 = 50;
}

impl pallet_balances::Config for Runtime {
	type MaxLocks = MaxLocks;
	type MaxReserves = MaxReserves;
	type ReserveIdentifier = [u8; 8];
	type Balance = Balance;
	type DustRemoval = ();
	type Event = Event;
	type ExistentialDeposit = ExistentialDeposit;
	type AccountStore = frame_system::Pallet<Runtime>;
	type WeightInfo = pallet_balances::weights::SubstrateWeight<Runtime>;
}

parameter_types! {
	pub const TransactionByteFee: Balance = 10 * MILLICENTS;
	pub const OperationalFeeMultiplier: u8 = 5;
	pub const TargetBlockFullness: Perquintill = Perquintill::from_percent(25);
	pub AdjustmentVariable: Multiplier = Multiplier::saturating_from_rational(1, 100_000);
	pub MinimumMultiplier: Multiplier = Multiplier::saturating_from_rational(1, 1_000_000_000u128);
}

impl pallet_transaction_payment::Config for Runtime {
	type Event = Event;
	type OnChargeTransaction = CurrencyAdapter<Balances, DealWithFees>;
	type OperationalFeeMultiplier = OperationalFeeMultiplier;
	type WeightToFee = IdentityFee<Balance>;
	type LengthToFee = ConstantMultiplier<Balance, TransactionByteFee>;
	type FeeMultiplierUpdate =
		TargetedFeeAdjustment<Self, TargetBlockFullness, AdjustmentVariable, MinimumMultiplier>;
}

impl pallet_asset_tx_payment::Config for Runtime {
	type Event = Event;
	type Fungibles = Assets;
	type OnChargeAssetTransaction = pallet_asset_tx_payment::FungiblesAdapter<
		pallet_assets::BalanceToAssetBalance<Balances, Runtime, ConvertInto>,
		CreditToBlockAuthor,
	>;
}

parameter_types! {
	pub const MinimumPeriod: Moment = SLOT_DURATION / 2;
}

impl pallet_timestamp::Config for Runtime {
	type Moment = Moment;
	type OnTimestampSet = Babe;
	type MinimumPeriod = MinimumPeriod;
	type WeightInfo = pallet_timestamp::weights::SubstrateWeight<Runtime>;
}

parameter_types! {
	pub const UncleGenerations: BlockNumber = 5;
}

impl pallet_authorship::Config for Runtime {
	type FindAuthor = pallet_session::FindAccountFromAuthorIndex<Self, Babe>;
	type UncleGenerations = UncleGenerations;
	type FilterUncle = ();
	type EventHandler = (Staking, ImOnline);
}

impl_opaque_keys! {
	pub struct SessionKeys {
		pub grandpa: Grandpa,
		pub babe: Babe,
		pub im_online: ImOnline,
		pub authority_discovery: AuthorityDiscovery,
	}
}

impl pallet_session::Config for Runtime {
	type Event = Event;
	type ValidatorId = <Self as frame_system::Config>::AccountId;
	type ValidatorIdOf = pallet_staking::StashOf<Self>;
	type ShouldEndSession = Babe;
	type NextSessionRotation = Babe;
	type SessionManager = pallet_session::historical::NoteHistoricalRoot<Self, Staking>;
	type SessionHandler = <SessionKeys as OpaqueKeys>::KeyTypeIdProviders;
	type Keys = SessionKeys;
	type WeightInfo = pallet_session::weights::SubstrateWeight<Runtime>;
}

impl pallet_session::historical::Config for Runtime {
	type FullIdentification = pallet_staking::Exposure<AccountId, Balance>;
	type FullIdentificationOf = pallet_staking::ExposureOf<Runtime>;
}

pallet_staking_reward_curve::build! {
	const REWARD_CURVE: PiecewiseLinear<'static> = curve!(
		min_inflation: 0_025_000,
		max_inflation: 0_100_000,
		ideal_stake: 0_500_000,
		falloff: 0_050_000,
		max_piece_count: 40,
		test_precision: 0_005_000,
	);
}

parameter_types! {
	pub const SessionsPerEra: sp_staking::SessionIndex = 6;
	pub const BondingDuration: sp_staking::EraIndex = 24 * 28;
	pub const SlashDeferDuration: sp_staking::EraIndex = 24 * 7; // 1/4 the bonding duration.
	pub const RewardCurve: &'static PiecewiseLinear<'static> = &REWARD_CURVE;
	pub const MaxNominatorRewardedPerValidator: u32 = 256;
	pub const OffendingValidatorsThreshold: Perbill = Perbill::from_percent(17);
	pub OffchainRepeat: BlockNumber = 5;
}

pub struct StakingBenchmarkingConfig;
impl pallet_staking::BenchmarkingConfig for StakingBenchmarkingConfig {
	type MaxNominators = ConstU32<1000>;
	type MaxValidators = ConstU32<1000>;
}

impl pallet_staking::Config for Runtime {
	type MaxNominations = MaxNominations;
	type Currency = Balances;
	type CurrencyBalance = Balance;
	type UnixTime = Timestamp;
	type CurrencyToVote = U128CurrencyToVote;
	type RewardRemainder = Treasury;
	type Event = Event;
	type Slash = Treasury; // send the slashed funds to the treasury.
	type Reward = (); // rewards are minted from the void
	type SessionsPerEra = SessionsPerEra;
	type BondingDuration = BondingDuration;
	type SlashDeferDuration = SlashDeferDuration;
	/// A super-majority of the council can cancel the slash.
	type SlashCancelOrigin = EitherOfDiverse<
		EnsureRoot<AccountId>,
		pallet_collective::EnsureProportionAtLeast<AccountId, CouncilCollective, 3, 4>,
	>;
	type SessionInterface = Self;
	type EraPayout = pallet_staking::ConvertCurve<RewardCurve>;
	type NextNewSession = Session;
	type MaxNominatorRewardedPerValidator = MaxNominatorRewardedPerValidator;
	type OffendingValidatorsThreshold = OffendingValidatorsThreshold;
	type ElectionProvider = ElectionProviderMultiPhase;
	type GenesisElectionProvider = onchain::UnboundedExecution<OnChainSeqPhragmen>;
	type VoterList = BagsList;
	type MaxUnlockingChunks = ConstU32<32>;
	type OnStakerSlash = NominationPools;
	type WeightInfo = pallet_staking::weights::SubstrateWeight<Runtime>;
	type BenchmarkingConfig = StakingBenchmarkingConfig;
}

parameter_types! {
	// phase durations. 1/4 of the last session for each.
	pub const SignedPhase: u32 = EPOCH_DURATION_IN_BLOCKS / 4;
	pub const UnsignedPhase: u32 = EPOCH_DURATION_IN_BLOCKS / 4;

	// signed config
	pub const SignedRewardBase: Balance = 1 * DOLLARS;
	pub const SignedDepositBase: Balance = 1 * DOLLARS;
	pub const SignedDepositByte: Balance = 1 * CENTS;

	pub BetterUnsignedThreshold: Perbill = Perbill::from_rational(1u32, 10_000);

	// miner configs
	pub const MultiPhaseUnsignedPriority: TransactionPriority = StakingUnsignedPriority::get() - 1u64;
	pub MinerMaxWeight: Weight = RuntimeBlockWeights::get()
		.get(DispatchClass::Normal)
		.max_extrinsic.expect("Normal extrinsics have a weight limit configured; qed")
		.saturating_sub(BlockExecutionWeight::get());
	// Solution can occupy 90% of normal block size
	pub MinerMaxLength: u32 = Perbill::from_rational(9u32, 10) *
		*RuntimeBlockLength::get()
		.max
		.get(DispatchClass::Normal);
}

frame_election_provider_support::generate_solution_type!(
	#[compact]
	pub struct NposSolution16::<
		VoterIndex = u32,
		TargetIndex = u16,
		Accuracy = sp_runtime::PerU16,
		MaxVoters = MaxElectingVoters,
	>(16)
);

parameter_types! {
	pub MaxNominations: u32 = <NposSolution16 as frame_election_provider_support::NposSolution>::LIMIT as u32;
	pub MaxElectingVoters: u32 = 10_000;
}

/// The numbers configured here could always be more than the the maximum limits of staking pallet
/// to ensure election snapshot will not run out of memory. For now, we set them to smaller values
/// since the staking is bounded and the weight pipeline takes hours for this single pallet.
pub struct ElectionProviderBenchmarkConfig;
impl pallet_election_provider_multi_phase::BenchmarkingConfig for ElectionProviderBenchmarkConfig {
	const VOTERS: [u32; 2] = [1000, 2000];
	const TARGETS: [u32; 2] = [500, 1000];
	const ACTIVE_VOTERS: [u32; 2] = [500, 800];
	const DESIRED_TARGETS: [u32; 2] = [200, 400];
	const SNAPSHOT_MAXIMUM_VOTERS: u32 = 1000;
	const MINER_MAXIMUM_VOTERS: u32 = 1000;
	const MAXIMUM_TARGETS: u32 = 300;
}

/// Maximum number of iterations for balancing that will be executed in the embedded OCW
/// miner of election provider multi phase.
pub const MINER_MAX_ITERATIONS: u32 = 10;

/// A source of random balance for NposSolver, which is meant to be run by the OCW election miner.
pub struct OffchainRandomBalancing;
impl Get<Option<BalancingConfig>> for OffchainRandomBalancing {
	fn get() -> Option<BalancingConfig> {
		use sp_runtime::traits::TrailingZeroInput;
		let iterations = match MINER_MAX_ITERATIONS {
			0 => 0,
			max => {
				let seed = sp_io::offchain::random_seed();
				let random = <u32>::decode(&mut TrailingZeroInput::new(&seed))
					.expect("input is padded with zeroes; qed") %
					max.saturating_add(1);
				random as usize
			},
		};

		let config = BalancingConfig { iterations, tolerance: 0 };
		Some(config)
	}
}

pub struct OnChainSeqPhragmen;
impl onchain::Config for OnChainSeqPhragmen {
	type System = Runtime;
	type Solver = SequentialPhragmen<
		AccountId,
		pallet_election_provider_multi_phase::SolutionAccuracyOf<Runtime>,
	>;
	type DataProvider = <Runtime as pallet_election_provider_multi_phase::Config>::DataProvider;
	type WeightInfo = frame_election_provider_support::weights::SubstrateWeight<Runtime>;
}

impl onchain::BoundedConfig for OnChainSeqPhragmen {
	type VotersBound = MaxElectingVoters;
	type TargetsBound = ConstU32<2_000>;
}

impl pallet_election_provider_multi_phase::MinerConfig for Runtime {
	type AccountId = AccountId;
	type MaxLength = MinerMaxLength;
	type MaxWeight = MinerMaxWeight;
	type Solution = NposSolution16;
	type MaxVotesPerVoter =
	<<Self as pallet_election_provider_multi_phase::Config>::DataProvider as ElectionDataProvider>::MaxVotesPerVoter;

	// The unsigned submissions have to respect the weight of the submit_unsigned call, thus their
	// weight estimate function is wired to this call's weight.
	fn solution_weight(v: u32, t: u32, a: u32, d: u32) -> Weight {
		<
			<Self as pallet_election_provider_multi_phase::Config>::WeightInfo
			as
			pallet_election_provider_multi_phase::WeightInfo
		>::submit_unsigned(v, t, a, d)
	}
}

impl pallet_election_provider_multi_phase::Config for Runtime {
	type Event = Event;
	type Currency = Balances;
	type EstimateCallFee = TransactionPayment;
	type SignedPhase = SignedPhase;
	type UnsignedPhase = UnsignedPhase;
	type BetterUnsignedThreshold = BetterUnsignedThreshold;
	type BetterSignedThreshold = ();
	type OffchainRepeat = OffchainRepeat;
	type MinerTxPriority = MultiPhaseUnsignedPriority;
	type MinerConfig = Self;
	type SignedMaxSubmissions = ConstU32<10>;
	type SignedRewardBase = SignedRewardBase;
	type SignedDepositBase = SignedDepositBase;
	type SignedDepositByte = SignedDepositByte;
	type SignedMaxRefunds = ConstU32<3>;
	type SignedDepositWeight = ();
	type SignedMaxWeight = MinerMaxWeight;
	type SlashHandler = (); // burn slashes
	type RewardHandler = (); // nothing to do upon rewards
	type DataProvider = Staking;
	type Fallback = onchain::BoundedExecution<OnChainSeqPhragmen>;
	type GovernanceFallback = onchain::BoundedExecution<OnChainSeqPhragmen>;
	type Solver = SequentialPhragmen<AccountId, SolutionAccuracyOf<Self>, OffchainRandomBalancing>;
	type ForceOrigin = EnsureRootOrHalfCouncil;
	type MaxElectableTargets = ConstU16<{ u16::MAX }>;
	type MaxElectingVoters = MaxElectingVoters;
	type BenchmarkingConfig = ElectionProviderBenchmarkConfig;
	type WeightInfo = pallet_election_provider_multi_phase::weights::SubstrateWeight<Self>;
}

parameter_types! {
	pub const BagThresholds: &'static [u64] = &voter_bags::THRESHOLDS;
}

impl pallet_bags_list::Config for Runtime {
	type Event = Event;
	type ScoreProvider = Staking;
	type WeightInfo = pallet_bags_list::weights::SubstrateWeight<Runtime>;
	type BagThresholds = BagThresholds;
	type Score = VoteWeight;
}

parameter_types! {
	pub const PostUnbondPoolsWindow: u32 = 4;
	pub const NominationPoolsPalletId: PalletId = PalletId(*b"py/nopls");
	pub const MaxPointsToBalance: u8 = 10;
}

use sp_runtime::traits::Convert;
pub struct BalanceToU256;
impl Convert<Balance, sp_core::U256> for BalanceToU256 {
	fn convert(balance: Balance) -> sp_core::U256 {
		sp_core::U256::from(balance)
	}
}
pub struct U256ToBalance;
impl Convert<sp_core::U256, Balance> for U256ToBalance {
	fn convert(n: sp_core::U256) -> Balance {
		n.try_into().unwrap_or(Balance::max_value())
	}
}

impl pallet_nomination_pools::Config for Runtime {
	type WeightInfo = ();
	type Event = Event;
	type Currency = Balances;
	type CurrencyBalance = Balance;
	type RewardCounter = FixedU128;
	type BalanceToU256 = BalanceToU256;
	type U256ToBalance = U256ToBalance;
	type StakingInterface = pallet_staking::Pallet<Self>;
	type PostUnbondingPoolsWindow = PostUnbondPoolsWindow;
	type MaxMetadataLen = ConstU32<256>;
	type MaxUnbonding = ConstU32<8>;
	type PalletId = NominationPoolsPalletId;
	type MaxPointsToBalance = MaxPointsToBalance;
}

parameter_types! {
	pub const VoteLockingPeriod: BlockNumber = 30 * DAYS;
}

impl pallet_conviction_voting::Config for Runtime {
	type WeightInfo = pallet_conviction_voting::weights::SubstrateWeight<Self>;
	type Event = Event;
	type Currency = Balances;
	type VoteLockingPeriod = VoteLockingPeriod;
	type MaxVotes = ConstU32<512>;
	type MaxTurnout = frame_support::traits::TotalIssuanceOf<Balances, Self::AccountId>;
	type Polls = Referenda;
}

parameter_types! {
	pub const AlarmInterval: BlockNumber = 1;
	pub const SubmissionDeposit: Balance = 100 * DOLLARS;
	pub const UndecidingTimeout: BlockNumber = 28 * DAYS;
}

pub struct TracksInfo;
impl pallet_referenda::TracksInfo<Balance, BlockNumber> for TracksInfo {
	type Id = u16;
	type Origin = <Origin as frame_support::traits::OriginTrait>::PalletsOrigin;
	fn tracks() -> &'static [(Self::Id, pallet_referenda::TrackInfo<Balance, BlockNumber>)] {
		static DATA: [(u16, pallet_referenda::TrackInfo<Balance, BlockNumber>); 1] = [(
			0u16,
			pallet_referenda::TrackInfo {
				name: "root",
				max_deciding: 1,
				decision_deposit: 10,
				prepare_period: 4,
				decision_period: 4,
				confirm_period: 2,
				min_enactment_period: 4,
				min_approval: pallet_referenda::Curve::LinearDecreasing {
					length: Perbill::from_percent(100),
					floor: Perbill::from_percent(50),
					ceil: Perbill::from_percent(100),
				},
				min_support: pallet_referenda::Curve::LinearDecreasing {
					length: Perbill::from_percent(100),
					floor: Perbill::from_percent(0),
					ceil: Perbill::from_percent(100),
				},
			},
		)];
		&DATA[..]
	}
	fn track_for(id: &Self::Origin) -> Result<Self::Id, ()> {
		if let Ok(system_origin) = frame_system::RawOrigin::try_from(id.clone()) {
			match system_origin {
				frame_system::RawOrigin::Root => Ok(0),
				_ => Err(()),
			}
		} else {
			Err(())
		}
	}
}

impl pallet_referenda::Config for Runtime {
	type WeightInfo = pallet_referenda::weights::SubstrateWeight<Self>;
	type Call = Call;
	type Event = Event;
	type Scheduler = Scheduler;
	type Currency = pallet_balances::Pallet<Self>;
	type SubmitOrigin = EnsureSigned<AccountId>;
	type CancelOrigin = EnsureRoot<AccountId>;
	type KillOrigin = EnsureRoot<AccountId>;
	type Slash = ();
	type Votes = pallet_conviction_voting::VotesOf<Runtime>;
	type Tally = pallet_conviction_voting::TallyOf<Runtime>;
	type SubmissionDeposit = SubmissionDeposit;
	type MaxQueued = ConstU32<100>;
	type UndecidingTimeout = UndecidingTimeout;
	type AlarmInterval = AlarmInterval;
	type Tracks = TracksInfo;
}

impl pallet_referenda::Config<pallet_referenda::Instance2> for Runtime {
	type WeightInfo = pallet_referenda::weights::SubstrateWeight<Self>;
	type Call = Call;
	type Event = Event;
	type Scheduler = Scheduler;
	type Currency = pallet_balances::Pallet<Self>;
	type SubmitOrigin = EnsureSigned<AccountId>;
	type CancelOrigin = EnsureRoot<AccountId>;
	type KillOrigin = EnsureRoot<AccountId>;
	type Slash = ();
	type Votes = pallet_ranked_collective::Votes;
	type Tally = pallet_ranked_collective::TallyOf<Runtime>;
	type SubmissionDeposit = SubmissionDeposit;
	type MaxQueued = ConstU32<100>;
	type UndecidingTimeout = UndecidingTimeout;
	type AlarmInterval = AlarmInterval;
	type Tracks = TracksInfo;
}

impl pallet_ranked_collective::Config for Runtime {
	type WeightInfo = pallet_ranked_collective::weights::SubstrateWeight<Self>;
	type Event = Event;
	type PromoteOrigin = EnsureRootWithSuccess<AccountId, ConstU16<65535>>;
	type DemoteOrigin = EnsureRootWithSuccess<AccountId, ConstU16<65535>>;
	type Polls = RankedPolls;
	type MinRankOfClass = traits::Identity;
	type VoteWeight = pallet_ranked_collective::Geometric;
}

impl pallet_remark::Config for Runtime {
	type WeightInfo = pallet_remark::weights::SubstrateWeight<Self>;
	type Event = Event;
}

parameter_types! {
	pub const LaunchPeriod: BlockNumber = 28 * 24 * 60 * MINUTES;
	pub const VotingPeriod: BlockNumber = 28 * 24 * 60 * MINUTES;
	pub const FastTrackVotingPeriod: BlockNumber = 3 * 24 * 60 * MINUTES;
	pub const MinimumDeposit: Balance = 100 * DOLLARS;
	pub const EnactmentPeriod: BlockNumber = 30 * 24 * 60 * MINUTES;
	pub const CooloffPeriod: BlockNumber = 28 * 24 * 60 * MINUTES;
	pub const MaxProposals: u32 = 100;
}

impl pallet_democracy::Config for Runtime {
	type Proposal = Call;
	type Event = Event;
	type Currency = Balances;
	type EnactmentPeriod = EnactmentPeriod;
	type LaunchPeriod = LaunchPeriod;
	type VotingPeriod = VotingPeriod;
	type VoteLockingPeriod = EnactmentPeriod; // Same as EnactmentPeriod
	type MinimumDeposit = MinimumDeposit;
	/// A straight majority of the council can decide what their next motion is.
	type ExternalOrigin =
		pallet_collective::EnsureProportionAtLeast<AccountId, CouncilCollective, 1, 2>;
	/// A super-majority can have the next scheduled referendum be a straight majority-carries vote.
	type ExternalMajorityOrigin =
		pallet_collective::EnsureProportionAtLeast<AccountId, CouncilCollective, 3, 4>;
	/// A unanimous council can have the next scheduled referendum be a straight default-carries
	/// (NTB) vote.
	type ExternalDefaultOrigin =
		pallet_collective::EnsureProportionAtLeast<AccountId, CouncilCollective, 1, 1>;
	/// Two thirds of the technical committee can have an ExternalMajority/ExternalDefault vote
	/// be tabled immediately and with a shorter voting/enactment period.
	type FastTrackOrigin =
		pallet_collective::EnsureProportionAtLeast<AccountId, TechnicalCollective, 2, 3>;
	type InstantOrigin =
		pallet_collective::EnsureProportionAtLeast<AccountId, TechnicalCollective, 1, 1>;
	type InstantAllowed = frame_support::traits::ConstBool<true>;
	type FastTrackVotingPeriod = FastTrackVotingPeriod;
	// To cancel a proposal which has been passed, 2/3 of the council must agree to it.
	type CancellationOrigin =
		pallet_collective::EnsureProportionAtLeast<AccountId, CouncilCollective, 2, 3>;
	// To cancel a proposal before it has been passed, the technical committee must be unanimous or
	// Root must agree.
	type CancelProposalOrigin = EitherOfDiverse<
		EnsureRoot<AccountId>,
		pallet_collective::EnsureProportionAtLeast<AccountId, TechnicalCollective, 1, 1>,
	>;
	type BlacklistOrigin = EnsureRoot<AccountId>;
	// Any single technical committee member may veto a coming council proposal, however they can
	// only do it once and it lasts only for the cool-off period.
	type VetoOrigin = pallet_collective::EnsureMember<AccountId, TechnicalCollective>;
	type CooloffPeriod = CooloffPeriod;
	type PreimageByteDeposit = PreimageByteDeposit;
	type OperationalPreimageOrigin = pallet_collective::EnsureMember<AccountId, CouncilCollective>;
	type Slash = Treasury;
	type Scheduler = Scheduler;
	type PalletsOrigin = OriginCaller;
	type MaxVotes = ConstU32<100>;
	type WeightInfo = pallet_democracy::weights::SubstrateWeight<Runtime>;
	type MaxProposals = MaxProposals;
}

parameter_types! {
	pub const CouncilMotionDuration: BlockNumber = 5 * DAYS;
	pub const CouncilMaxProposals: u32 = 100;
	pub const CouncilMaxMembers: u32 = 100;
}

type CouncilCollective = pallet_collective::Instance1;
impl pallet_collective::Config<CouncilCollective> for Runtime {
	type Origin = Origin;
	type Proposal = Call;
	type Event = Event;
	type MotionDuration = CouncilMotionDuration;
	type MaxProposals = CouncilMaxProposals;
	type MaxMembers = CouncilMaxMembers;
	type DefaultVote = pallet_collective::PrimeDefaultVote;
	type WeightInfo = pallet_collective::weights::SubstrateWeight<Runtime>;
}

parameter_types! {
	pub const CandidacyBond: Balance = 10 * DOLLARS;
	// 1 storage item created, key size is 32 bytes, value size is 16+16.
	pub const VotingBondBase: Balance = deposit(1, 64);
	// additional data per vote is 32 bytes (account id).
	pub const VotingBondFactor: Balance = deposit(0, 32);
	pub const TermDuration: BlockNumber = 7 * DAYS;
	pub const DesiredMembers: u32 = 13;
	pub const DesiredRunnersUp: u32 = 7;
	pub const MaxVoters: u32 = 10 * 1000;
	pub const MaxCandidates: u32 = 1000;
	pub const ElectionsPhragmenPalletId: LockIdentifier = *b"phrelect";
}

// Make sure that there are no more than `MaxMembers` members elected via elections-phragmen.
const_assert!(DesiredMembers::get() <= CouncilMaxMembers::get());

impl pallet_elections_phragmen::Config for Runtime {
	type Event = Event;
	type PalletId = ElectionsPhragmenPalletId;
	type Currency = Balances;
	type ChangeMembers = Council;
	// NOTE: this implies that council's genesis members cannot be set directly and must come from
	// this module.
	type InitializeMembers = Council;
	type CurrencyToVote = U128CurrencyToVote;
	type CandidacyBond = CandidacyBond;
	type VotingBondBase = VotingBondBase;
	type VotingBondFactor = VotingBondFactor;
	type LoserCandidate = ();
	type KickedMember = ();
	type DesiredMembers = DesiredMembers;
	type DesiredRunnersUp = DesiredRunnersUp;
	type TermDuration = TermDuration;
	type MaxVoters = MaxVoters;
	type MaxCandidates = MaxCandidates;
	type WeightInfo = pallet_elections_phragmen::weights::SubstrateWeight<Runtime>;
}

parameter_types! {
	pub const TechnicalMotionDuration: BlockNumber = 5 * DAYS;