lib.rs

// Copyright 2017-2020 Parity Technologies (UK) Ltd.
// This file is part of Polkadot.

// Polkadot 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.

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

//! The Polkadot 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 256.
#![recursion_limit = "256"]

use pallet_transaction_payment::CurrencyAdapter;
use parity_scale_codec::{Decode, Encode, MaxEncodedLen};
use primitives::v1::{
	AccountId, AccountIndex, Balance, BlockNumber, CandidateEvent, CommittedCandidateReceipt,
	CoreState, GroupRotationInfo, Hash, Id as ParaId, InboundDownwardMessage, InboundHrmpMessage,
	Moment, Nonce, OccupiedCoreAssumption, PersistedValidationData, ScrapedOnChainVotes,
	SessionInfo, Signature, ValidationCode, ValidationCodeHash, ValidatorId, ValidatorIndex,
};
use runtime_common::{
	auctions, crowdloan, impls::ToAuthor, paras_registrar, paras_sudo_wrapper, slots, xcm_sender,
	BlockHashCount, BlockLength, BlockWeights, CurrencyToVote, OffchainSolutionLengthLimit,
	OffchainSolutionWeightLimit, RocksDbWeight, SlowAdjustingFeeUpdate,
};
use sp_std::{collections::btree_map::BTreeMap, prelude::*};

use runtime_parachains::{
	configuration as parachains_configuration, dmp as parachains_dmp, hrmp as parachains_hrmp,
	inclusion as parachains_inclusion, initializer as parachains_initializer,
	origin as parachains_origin, paras as parachains_paras,
	paras_inherent as parachains_paras_inherent, reward_points as parachains_reward_points,
	runtime_api_impl::v1 as parachains_runtime_api_impl, scheduler as parachains_scheduler,
	session_info as parachains_session_info, shared as parachains_shared, ump as parachains_ump,
};

use xcm::latest::prelude::*;
use xcm_builder::{
	AccountId32Aliases, AllowKnownQueryResponses, AllowSubscriptionsFrom,
	AllowTopLevelPaidExecutionFrom, AllowUnpaidExecutionFrom, ChildParachainAsNative,
	ChildParachainConvertsVia, ChildSystemParachainAsSuperuser,
	CurrencyAdapter as XcmCurrencyAdapter, IsChildSystemParachain, IsConcrete, LocationInverter,
	SignedAccountId32AsNative, SignedToAccountId32, SovereignSignedViaLocation, TakeWeightCredit,
	UsingComponents, WeightInfoBounds,
};
use xcm_executor::XcmExecutor;

use authority_discovery_primitives::AuthorityId as AuthorityDiscoveryId;
use beefy_primitives::crypto::AuthorityId as BeefyId;
use frame_support::{
	construct_runtime, parameter_types,
	traits::{
		Contains, Everything, InstanceFilter, KeyOwnerProofSystem, Nothing, OnRuntimeUpgrade,
	},
	weights::Weight,
	PalletId, RuntimeDebug,
};
use frame_system::EnsureRoot;
use pallet_grandpa::{fg_primitives, AuthorityId as GrandpaId};
use pallet_im_online::sr25519::AuthorityId as ImOnlineId;
use pallet_mmr_primitives as mmr;
use pallet_session::historical as session_historical;
use pallet_transaction_payment::{FeeDetails, RuntimeDispatchInfo};
use sp_core::OpaqueMetadata;
use sp_runtime::{
	create_runtime_str,
	curve::PiecewiseLinear,
	generic, impl_opaque_keys,
	traits::{
		AccountIdLookup, BlakeTwo256, Block as BlockT, ConvertInto, Extrinsic as ExtrinsicT,
		OpaqueKeys, SaturatedConversion, Verify,
	},
	transaction_validity::{TransactionPriority, TransactionSource, TransactionValidity},
	ApplyExtrinsicResult, KeyTypeId, Perbill,
};
use sp_staking::SessionIndex;
#[cfg(any(feature = "std", test))]
use sp_version::NativeVersion;
use sp_version::RuntimeVersion;

pub use pallet_balances::Call as BalancesCall;
pub use pallet_election_provider_multi_phase::Call as EPMCall;
#[cfg(feature = "std")]
pub use pallet_staking::StakerStatus;
pub use pallet_timestamp::Call as TimestampCall;
#[cfg(any(feature = "std", test))]
pub use sp_runtime::BuildStorage;

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

// Weights used in the runtime
mod weights;

// Voter bag threshold definitions.
mod bag_thresholds;

#[cfg(test)]
mod tests;

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

/// Runtime version (Westend).
pub const VERSION: RuntimeVersion = RuntimeVersion {
	spec_name: create_runtime_str!("westend"),
	impl_name: create_runtime_str!("parity-westend"),
	authoring_version: 2,
	spec_version: 9130,
	impl_version: 0,
	#[cfg(not(feature = "disable-runtime-api"))]
	apis: RUNTIME_API_VERSIONS,
	#[cfg(feature = "disable-runtime-api")]
	apis: version::create_apis_vec![[]],
	transaction_version: 7,
};

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

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

/// Allow everything.
pub struct BaseFilter;
impl Contains<Call> for BaseFilter {
	fn contains(_: &Call) -> bool {
		true
	}
}

parameter_types! {
	pub const Version: RuntimeVersion = VERSION;
	pub const SS58Prefix: u8 = 42;
}

impl frame_system::Config for Runtime {
	type BaseCallFilter = BaseFilter;
	type BlockWeights = BlockWeights;
	type BlockLength = BlockLength;
	type Origin = Origin;
	type Call = Call;
	type Index = Nonce;
	type BlockNumber = BlockNumber;
	type Hash = Hash;
	type Hashing = BlakeTwo256;
	type AccountId = AccountId;
	type Lookup = AccountIdLookup<AccountId, ()>;
	type Header = generic::Header<BlockNumber, BlakeTwo256>;
	type Event = Event;
	type BlockHashCount = BlockHashCount;
	type DbWeight = RocksDbWeight;
	type Version = Version;
	type PalletInfo = PalletInfo;
	type AccountData = pallet_balances::AccountData<Balance>;
	type OnNewAccount = ();
	type OnKilledAccount = ();
	type SystemWeightInfo = weights::frame_system::WeightInfo<Runtime>;
	type SS58Prefix = SS58Prefix;
	type OnSetCode = ();
}

parameter_types! {
	pub MaximumSchedulerWeight: Weight = Perbill::from_percent(80) *
		BlockWeights::get().max_block;
	pub const MaxScheduledPerBlock: u32 = 50;
}

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 = MaxScheduledPerBlock;
	type WeightInfo = weights::pallet_scheduler::WeightInfo<Runtime>;
	type OriginPrivilegeCmp = frame_support::traits::EqualPrivilegeOnly;
}

parameter_types! {
	pub const EpochDuration: u64 = EPOCH_DURATION_IN_SLOTS as u64;
	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;

	// session module is the trigger
	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 = 100 * CENTS;
}

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

parameter_types! {
	pub const ExistentialDeposit: Balance = 1 * CENTS;
	pub const MaxLocks: u32 = 50;
	pub const MaxReserves: u32 = 50;
}

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

parameter_types! {
	pub const TransactionByteFee: Balance = 10 * MILLICENTS;
	/// This value increases the priority of `Operational` transactions by adding
	/// a "virtual tip" that's equal to the `OperationalFeeMultiplier * final_fee`.
	pub const OperationalFeeMultiplier: u8 = 5;
}

impl pallet_transaction_payment::Config for Runtime {
	type OnChargeTransaction = CurrencyAdapter<Balances, ToAuthor<Runtime>>;
	type TransactionByteFee = TransactionByteFee;
	type OperationalFeeMultiplier = OperationalFeeMultiplier;
	type WeightToFee = WeightToFee;
	type FeeMultiplierUpdate = SlowAdjustingFeeUpdate<Self>;
}

parameter_types! {
	pub const MinimumPeriod: u64 = SLOT_DURATION / 2;
}
impl pallet_timestamp::Config for Runtime {
	type Moment = u64;
	type OnTimestampSet = Babe;
	type MinimumPeriod = MinimumPeriod;
	type WeightInfo = weights::pallet_timestamp::WeightInfo<Runtime>;
}

parameter_types! {
	pub const UncleGenerations: u32 = 0;
}

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

parameter_types! {
	pub const Period: BlockNumber = 10 * MINUTES;
	pub const Offset: BlockNumber = 0;
}

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

impl pallet_session::Config for Runtime {
	type Event = Event;
	type ValidatorId = 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 = weights::pallet_session::WeightInfo<Runtime>;
}

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

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

	// signed config
	pub const SignedMaxSubmissions: u32 = 128;
	pub const SignedDepositBase: Balance = deposit(2, 0);
	pub const SignedDepositByte: Balance = deposit(0, 10) / 1024;
	// Each good submission will get 1 WND as reward
	pub SignedRewardBase: Balance = 1 * UNITS;
	pub SolutionImprovementThreshold: Perbill = Perbill::from_rational(5u32, 10_000);

	// 1 hour session, 15 minutes unsigned phase, 4 offchain executions.
	pub OffchainRepeat: BlockNumber = UnsignedPhase::get() / 4;

	/// Whilst `UseNominatorsAndUpdateBagsList` or `UseNominatorsMap` is in use, this can still be a
	/// very large value. Once the `BagsList` is in full motion, staking might open its door to many
	/// more nominators, and this value should instead be what is a "safe" number (e.g. 22500).
	pub const VoterSnapshotPerBlock: u32 = 22_500;
}

sp_npos_elections::generate_solution_type!(
	#[compact]
	pub struct NposCompactSolution16::<
		VoterIndex = u32,
		TargetIndex = u16,
		Accuracy = sp_runtime::PerU16,
	>(16)
);

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 SignedMaxSubmissions = SignedMaxSubmissions;
	type SignedRewardBase = SignedRewardBase;
	type SignedDepositBase = SignedDepositBase;
	type SignedDepositByte = SignedDepositByte;
	type SignedDepositWeight = ();
	type SignedMaxWeight = Self::MinerMaxWeight;
	type SlashHandler = (); // burn slashes
	type RewardHandler = (); // nothing to do upon rewards
	type SolutionImprovementThreshold = SolutionImprovementThreshold;
	type MinerMaxWeight = OffchainSolutionWeightLimit; // For now use the one from staking.
	type MinerMaxLength = OffchainSolutionLengthLimit;
	type OffchainRepeat = OffchainRepeat;
	type MinerTxPriority = NposSolutionPriority;
	type DataProvider = Staking;
	type Solution = NposCompactSolution16;
	type Fallback = pallet_election_provider_multi_phase::NoFallback<Self>;
	type Solver = frame_election_provider_support::SequentialPhragmen<
		AccountId,
		pallet_election_provider_multi_phase::SolutionAccuracyOf<Self>,
		runtime_common::elections::OffchainRandomBalancing,
	>;
	type BenchmarkingConfig = runtime_common::elections::BenchmarkConfig;
	type ForceOrigin = EnsureRoot<AccountId>;
	type WeightInfo = weights::pallet_election_provider_multi_phase::WeightInfo<Self>;
	type VoterSnapshotPerBlock = VoterSnapshotPerBlock;
}

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

impl pallet_bags_list::Config for Runtime {
	type Event = Event;
	type VoteWeightProvider = Staking;
	type WeightInfo = weights::pallet_bags_list::WeightInfo<Runtime>;
	type BagThresholds = BagThresholds;
}

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! {
	// Six sessions in an era (6 hours).
	pub const SessionsPerEra: SessionIndex = 6;
	// 28 eras for unbonding (7 days).
	pub const BondingDuration: pallet_staking::EraIndex = 28;
	// 27 eras in which slashes can be cancelled (slightly less than 7 days).
	pub const SlashDeferDuration: pallet_staking::EraIndex = 27;
	pub const RewardCurve: &'static PiecewiseLinear<'static> = &REWARD_CURVE;
	pub const MaxNominatorRewardedPerValidator: u32 = 64;
	pub const OffendingValidatorsThreshold: Perbill = Perbill::from_percent(17);
}

impl frame_election_provider_support::onchain::Config for Runtime {
	type Accuracy = runtime_common::elections::OnOnChainAccuracy;
	type DataProvider = Staking;
}

impl pallet_staking::Config for Runtime {
	const MAX_NOMINATIONS: u32 =
		<NposCompactSolution16 as sp_npos_elections::NposSolution>::LIMIT as u32;
	type Currency = Balances;
	type UnixTime = Timestamp;
	type CurrencyToVote = CurrencyToVote;
	type RewardRemainder = ();
	type Event = Event;
	type Slash = ();
	type Reward = ();
	type SessionsPerEra = SessionsPerEra;
	type BondingDuration = BondingDuration;
	type SlashDeferDuration = SlashDeferDuration;
	// A majority of the council can cancel the slash.
	type SlashCancelOrigin = EnsureRoot<AccountId>;
	type SessionInterface = Self;
	type EraPayout = pallet_staking::ConvertCurve<RewardCurve>;
	type MaxNominatorRewardedPerValidator = MaxNominatorRewardedPerValidator;
	type OffendingValidatorsThreshold = OffendingValidatorsThreshold;
	type NextNewSession = Session;
	type ElectionProvider = ElectionProviderMultiPhase;
	type GenesisElectionProvider = runtime_common::elections::GenesisElectionOf<Self>;
	// Use the nominators map to iter voters, but also keep bags-list up-to-date.
	type SortedListProvider = BagsList;
	type WeightInfo = weights::pallet_staking::WeightInfo<Runtime>;
}

parameter_types! {
	pub const LaunchPeriod: BlockNumber = 7 * DAYS;
	pub const VotingPeriod: BlockNumber = 7 * DAYS;
	pub const FastTrackVotingPeriod: BlockNumber = 3 * HOURS;
	pub const MinimumDeposit: Balance = 100 * CENTS;
	pub const EnactmentPeriod: BlockNumber = 8 * DAYS;
	pub const CooloffPeriod: BlockNumber = 7 * DAYS;
	// One cent: $10,000 / MB
	pub const PreimageByteDeposit: Balance = 10 * MILLICENTS;
	pub const InstantAllowed: bool = true;
	pub const MaxAuthorities: u32 = 100_000;
}

impl pallet_offences::Config for Runtime {
	type Event = Event;
	type IdentificationTuple = pallet_session::historical::IdentificationTuple<Self>;
	type OnOffenceHandler = Staking;
}

impl pallet_authority_discovery::Config for Runtime {
	type MaxAuthorities = MaxAuthorities;
}

parameter_types! {
	pub const NposSolutionPriority: TransactionPriority = TransactionPriority::max_value() / 2;
	pub const ImOnlineUnsignedPriority: TransactionPriority = TransactionPriority::max_value();
	pub const MaxKeys: u32 = 10_000;
	pub const MaxPeerInHeartbeats: u32 = 10_000;
	pub const MaxPeerDataEncodingSize: u32 = 1_000;
}

impl pallet_im_online::Config for Runtime {
	type AuthorityId = ImOnlineId;
	type Event = Event;
	type ValidatorSet = Historical;
	type NextSessionRotation = Babe;
	type ReportUnresponsiveness = Offences;
	type UnsignedPriority = ImOnlineUnsignedPriority;
	type WeightInfo = weights::pallet_im_online::WeightInfo<Runtime>;
	type MaxKeys = MaxKeys;
	type MaxPeerInHeartbeats = MaxPeerInHeartbeats;
	type MaxPeerDataEncodingSize = MaxPeerDataEncodingSize;
}

impl pallet_grandpa::Config for Runtime {
	type Event = Event;
	type Call = Call;

	type KeyOwnerProofSystem = Historical;

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

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

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

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

/// Submits a transaction with the node's public and signature type. Adheres to the signed extension
/// format of the chain.
impl<LocalCall> frame_system::offchain::CreateSignedTransaction<LocalCall> for Runtime
where
	Call: From<LocalCall>,
{
	fn create_transaction<C: frame_system::offchain::AppCrypto<Self::Public, Self::Signature>>(
		call: Call,
		public: <Signature as Verify>::Signer,
		account: AccountId,
		nonce: <Runtime as frame_system::Config>::Index,
	) -> Option<(Call, <UncheckedExtrinsic as ExtrinsicT>::SignaturePayload)> {
		use sp_runtime::traits::StaticLookup;
		// take the biggest period possible.
		let period =
			BlockHashCount::get().checked_next_power_of_two().map(|c| c / 2).unwrap_or(2) as u64;

		let current_block = System::block_number()
			.saturated_into::<u64>()
			// The `System::block_number` is initialized with `n+1`,
			// so the actual block number is `n`.
			.saturating_sub(1);
		let tip = 0;
		let extra: SignedExtra = (
			frame_system::CheckSpecVersion::<Runtime>::new(),
			frame_system::CheckTxVersion::<Runtime>::new(),
			frame_system::CheckGenesis::<Runtime>::new(),
			frame_system::CheckMortality::<Runtime>::from(generic::Era::mortal(
				period,
				current_block,
			)),
			frame_system::CheckNonce::<Runtime>::from(nonce),
			frame_system::CheckWeight::<Runtime>::new(),
			pallet_transaction_payment::ChargeTransactionPayment::<Runtime>::from(tip),
		);
		let raw_payload = SignedPayload::new(call, extra)
			.map_err(|e| {
				log::warn!("Unable to create signed payload: {:?}", e);
			})
			.ok()?;
		let signature = raw_payload.using_encoded(|payload| C::sign(payload, public))?;
		let (call, extra, _) = raw_payload.deconstruct();
		let address = <Runtime as frame_system::Config>::Lookup::unlookup(account);
		Some((call, (address, signature, extra)))
	}
}

impl frame_system::offchain::SigningTypes for Runtime {
	type Public = <Signature as Verify>::Signer;
	type Signature = Signature;
}

impl<C> frame_system::offchain::SendTransactionTypes<C> for Runtime
where
	Call: From<C>,
{
	type OverarchingCall = Call;
	type Extrinsic = UncheckedExtrinsic;
}

parameter_types! {
	// Minimum 100 bytes/KSM deposited (1 CENT/byte)
	pub const BasicDeposit: Balance = 1000 * CENTS;       // 258 bytes on-chain
	pub const FieldDeposit: Balance = 250 * CENTS;        // 66 bytes on-chain
	pub const SubAccountDeposit: Balance = 200 * CENTS;   // 53 bytes on-chain
	pub const MaxSubAccounts: u32 = 100;
	pub const MaxAdditionalFields: u32 = 100;
	pub const MaxRegistrars: u32 = 20;
}

impl pallet_identity::Config for Runtime {
	type Event = Event;
	type Currency = Balances;
	type Slashed = ();
	type BasicDeposit = BasicDeposit;
	type FieldDeposit = FieldDeposit;
	type SubAccountDeposit = SubAccountDeposit;
	type MaxSubAccounts = MaxSubAccounts;
	type MaxAdditionalFields = MaxAdditionalFields;
	type MaxRegistrars = MaxRegistrars;
	type RegistrarOrigin = frame_system::EnsureRoot<AccountId>;
	type ForceOrigin = frame_system::EnsureRoot<AccountId>;
	type WeightInfo = weights::pallet_identity::WeightInfo<Runtime>;
}

impl pallet_utility::Config for Runtime {
	type Event = Event;
	type Call = Call;
	type PalletsOrigin = OriginCaller;
	type WeightInfo = weights::pallet_utility::WeightInfo<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);
	pub const MaxSignatories: u16 = 100;
}

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

parameter_types! {
	pub const ConfigDepositBase: Balance = 500 * CENTS;
	pub const FriendDepositFactor: Balance = 50 * CENTS;
	pub const MaxFriends: u16 = 9;
	pub const RecoveryDeposit: Balance = 500 * CENTS;
}

impl pallet_recovery::Config for Runtime {
	type Event = Event;
	type Call = Call;
	type Currency = Balances;
	type ConfigDepositBase = ConfigDepositBase;
	type FriendDepositFactor = FriendDepositFactor;
	type MaxFriends = MaxFriends;
	type RecoveryDeposit = RecoveryDeposit;
}

parameter_types! {
	pub const MinVestedTransfer: Balance = 100 * CENTS;
}

impl pallet_vesting::Config for Runtime {
	type Event = Event;
	type Currency = Balances;
	type BlockNumberToBalance = ConvertInto;
	type MinVestedTransfer = MinVestedTransfer;
	type WeightInfo = weights::pallet_vesting::WeightInfo<Runtime>;
	const MAX_VESTING_SCHEDULES: u32 = 28;
}

impl pallet_sudo::Config for Runtime {
	type Event = Event;
	type Call = Call;
}

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 MaxProxies: u16 = 32;
	pub const AnnouncementDepositBase: Balance = deposit(1, 8);
	pub const AnnouncementDepositFactor: Balance = deposit(0, 66);
	pub const MaxPending: u16 = 32;
}

/// 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,
	Staking,
	SudoBalances,
	IdentityJudgement,
	CancelProxy,
	Auction,
}
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::System(..) |
				Call::Babe(..) |
				Call::Timestamp(..) |
				Call::Indices(pallet_indices::Call::claim{..}) |
				Call::Indices(pallet_indices::Call::free{..}) |
				Call::Indices(pallet_indices::Call::freeze{..}) |
				// Specifically omitting Indices `transfer`, `force_transfer`
				// Specifically omitting the entire Balances pallet
				Call::Authorship(..) |
				Call::Staking(..) |
				Call::Session(..) |
				Call::Grandpa(..) |
				Call::ImOnline(..) |
				Call::Utility(..) |
				Call::Identity(..) |
				Call::Recovery(pallet_recovery::Call::as_recovered{..}) |
				Call::Recovery(pallet_recovery::Call::vouch_recovery{..}) |
				Call::Recovery(pallet_recovery::Call::claim_recovery{..}) |
				Call::Recovery(pallet_recovery::Call::close_recovery{..}) |
				Call::Recovery(pallet_recovery::Call::remove_recovery{..}) |
				Call::Recovery(pallet_recovery::Call::cancel_recovered{..}) |
				// Specifically omitting Recovery `create_recovery`, `initiate_recovery`
				Call::Vesting(pallet_vesting::Call::vest{..}) |
				Call::Vesting(pallet_vesting::Call::vest_other{..}) |
				// Specifically omitting Vesting `vested_transfer`, and `force_vested_transfer`
				Call::Scheduler(..) |
				// Specifically omitting Sudo pallet
				Call::Proxy(..) |
				Call::Multisig(..) |
				Call::Registrar(paras_registrar::Call::register{..}) |
				Call::Registrar(paras_registrar::Call::deregister{..}) |
				// Specifically omitting Registrar `swap`
				Call::Registrar(paras_registrar::Call::reserve{..}) |
				Call::Crowdloan(..) |
				Call::Slots(..) |
				Call::Auctions(..) | // Specifically omitting the entire XCM Pallet
				Call::BagsList(..)
			),
			ProxyType::Staking => {
				matches!(c, Call::Staking(..) | Call::Session(..) | Call::Utility(..))
			},
			ProxyType::SudoBalances => match c {
				Call::Sudo(pallet_sudo::Call::sudo { call: ref x }) => {
					matches!(x.as_ref(), &Call::Balances(..))
				},
				Call::Utility(..) => true,
				_ => false,
			},
			ProxyType::IdentityJudgement => matches!(
				c,
				Call::Identity(pallet_identity::Call::provide_judgement { .. }) | Call::Utility(..)
			),
			ProxyType::CancelProxy => {
				matches!(c, Call::Proxy(pallet_proxy::Call::reject_announcement { .. }))
			},
			ProxyType::Auction => matches!(
				c,
				Call::Auctions(..) | Call::Crowdloan(..) | Call::Registrar(..) | Call::Slots(..)
			),
		}
	}
	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 = MaxProxies;
	type WeightInfo = weights::pallet_proxy::WeightInfo<Runtime>;
	type MaxPending = MaxPending;
	type CallHasher = BlakeTwo256;
	type AnnouncementDepositBase = AnnouncementDepositBase;
	type AnnouncementDepositFactor = AnnouncementDepositFactor;
}

impl parachains_origin::Config for Runtime {}

impl parachains_configuration::Config for Runtime {
	type WeightInfo = weights::runtime_parachains_configuration::WeightInfo<Runtime>;
}

impl parachains_shared::Config for Runtime {}

impl parachains_session_info::Config for Runtime {}

impl parachains_inclusion::Config for Runtime {
	type Event = Event;
	type DisputesHandler = ();
	type RewardValidators = parachains_reward_points::RewardValidatorsWithEraPoints<Runtime>;
}

impl parachains_paras::Config for Runtime {
	type Origin = Origin;
	type Event = Event;
	type WeightInfo = weights::runtime_parachains_paras::WeightInfo<Runtime>;
}

parameter_types! {
	pub const FirstMessageFactorPercent: u64 = 100;
}

impl parachains_ump::Config for Runtime {
	type Event = Event;
	type UmpSink = crate::parachains_ump::XcmSink<XcmExecutor<XcmConfig>, Runtime>;
	type FirstMessageFactorPercent = FirstMessageFactorPercent;
	type ExecuteOverweightOrigin = EnsureRoot<AccountId>;
}

impl parachains_dmp::Config for Runtime {}

impl parachains_hrmp::Config for Runtime {
	type Event = Event;
	type Origin = Origin;
	type Currency = Balances;
}

impl parachains_paras_inherent::Config for Runtime {
	type WeightInfo = weights::runtime_parachains_paras_inherent::WeightInfo<Runtime>;
}

impl parachains_scheduler::Config for Runtime {}

impl parachains_initializer::Config for Runtime {
	type Randomness = pallet_babe::RandomnessFromOneEpochAgo<Runtime>;
	type ForceOrigin = EnsureRoot<AccountId>;
	type WeightInfo = weights::runtime_parachains_initializer::WeightInfo<Runtime>;
}

impl paras_sudo_wrapper::Config for Runtime {}

parameter_types! {
	pub const ParaDeposit: Balance = 2000 * CENTS;
	pub const DataDepositPerByte: Balance = deposit(0, 1);
}

impl paras_registrar::Config for Runtime {
	type Event = Event;
	type Origin = Origin;
	type Currency = Balances;
	type OnSwap = (Crowdloan, Slots);
	type ParaDeposit = ParaDeposit;
	type DataDepositPerByte = DataDepositPerByte;
	type WeightInfo = weights::runtime_common_paras_registrar::WeightInfo<Runtime>;
}

parameter_types! {
	pub const LeasePeriod: BlockNumber = 28 * DAYS;
}

impl slots::Config for Runtime {
	type Event = Event;
	type Currency = Balances;
	type Registrar = Registrar;
	type LeasePeriod = LeasePeriod;
	type LeaseOffset = ();
	type WeightInfo = weights::runtime_common_slots::WeightInfo<Runtime>;
}

parameter_types! {
	pub const CrowdloanId: PalletId = PalletId(*b"py/cfund");
	pub const SubmissionDeposit: Balance = 100 * 100 * CENTS;
	pub const MinContribution: Balance = 100 * CENTS;
	pub const RemoveKeysLimit: u32 = 500;
	// Allow 32 bytes for an additional memo to a crowdloan.
	pub const MaxMemoLength: u8 = 32;
}

impl crowdloan::Config for Runtime {
	type Event = Event;
	type PalletId = CrowdloanId;
	type SubmissionDeposit = SubmissionDeposit;
	type MinContribution = MinContribution;
	type RemoveKeysLimit = RemoveKeysLimit;
	type Registrar = Registrar;
	type Auctioneer = Auctions;
	type MaxMemoLength = MaxMemoLength;
	type WeightInfo = weights::runtime_common_crowdloan::WeightInfo<Runtime>;
}

parameter_types! {
	// The average auction is 7 days long, so this will be 70% for ending period.
	// 5 Days = 72000 Blocks @ 6 sec per block
	pub const EndingPeriod: BlockNumber = 5 * DAYS;
	// ~ 1000 samples per day -> ~ 20 blocks per sample -> 2 minute samples
	pub const SampleLength: BlockNumber = 2 * MINUTES;
}

impl auctions::Config for Runtime {
	type Event = Event;
	type Leaser = Slots;
	type Registrar = Registrar;
	type EndingPeriod = EndingPeriod;
	type SampleLength = SampleLength;
	type Randomness = pallet_babe::RandomnessFromOneEpochAgo<Runtime>;
	type InitiateOrigin = EnsureRoot<AccountId>;
	type WeightInfo = weights::runtime_common_auctions::WeightInfo<Runtime>;
}

parameter_types! {
	pub const WndLocation: MultiLocation = Here.into();
	pub const Ancestry: MultiLocation = Here.into();
	pub WestendNetwork: NetworkId = NetworkId::Named(b"Westend".to_vec());
	pub CheckAccount: AccountId = XcmPallet::check_account();
}

pub type LocationConverter =
	(ChildParachainConvertsVia<ParaId, AccountId>, AccountId32Aliases<WestendNetwork, AccountId>);

pub type LocalAssetTransactor = XcmCurrencyAdapter<
	// Use this currency:
	Balances,
	// Use this currency when it is a fungible asset matching the given location or name:
	IsConcrete<WndLocation>,
	// We can convert the MultiLocations with our converter above:
	LocationConverter,
	// Our chain's account ID type (we can't get away without mentioning it explicitly):
	AccountId,
	// It's a native asset so we keep track of the teleports to maintain total issuance.
	CheckAccount,
>;

type LocalOriginConverter = (
	SovereignSignedViaLocation<LocationConverter, Origin>,
	ChildParachainAsNative<parachains_origin::Origin, Origin>,
	SignedAccountId32AsNative<WestendNetwork, Origin>,
	ChildSystemParachainAsSuperuser<ParaId, Origin>,
);

/// The XCM router. When we want to send an XCM message, we use this type. It amalgamates all of our
/// individual routers.
pub type XcmRouter = (
	// Only one router so far - use DMP to communicate with child parachains.
	xcm_sender::ChildParachainRouter<Runtime, XcmPallet>,
);

parameter_types! {
	pub const Westmint: MultiLocation = Parachain(1000).into();
	pub const WestendForWestmint: (MultiAssetFilter, MultiLocation) =
		(Wild(AllOf { fun: WildFungible, id: Concrete(WndLocation::get()) }), Westmint::get());
	pub const MaxInstructions: u32 = 100;
}
pub type TrustedTeleporters = (xcm_builder::Case<WestendForWestmint>,);

/// The barriers one of which must be passed for an XCM message to be executed.
pub type Barrier = (
	// Weight that is paid for may be consumed.
	TakeWeightCredit,
	// If the message is one that immediately attemps to pay for execution, then allow it.
	AllowTopLevelPaidExecutionFrom<Everything>,
	// Messages coming from system parachains need not pay for execution.
	AllowUnpaidExecutionFrom<IsChildSystemParachain<ParaId>>,
	// Expected responses are OK.
	AllowKnownQueryResponses<XcmPallet>,
	// Subscriptions for version tracking are OK.
	AllowSubscriptionsFrom<Everything>,
);

pub struct XcmConfig;
impl xcm_executor::Config for XcmConfig {
	type Call = Call;
	type XcmSender = XcmRouter;
	type AssetTransactor = LocalAssetTransactor;
	type OriginConverter = LocalOriginConverter;
	type IsReserve = ();
	type IsTeleporter = TrustedTeleporters;
	type LocationInverter = LocationInverter<Ancestry>;
	type Barrier = Barrier;
	type Weigher = WeightInfoBounds<weights::xcm::WestendXcmWeight<Call>, Call, MaxInstructions>;
	type Trader = UsingComponents<WeightToFee, WndLocation, AccountId, Balances, ToAuthor<Runtime>>;
	type ResponseHandler = XcmPallet;
	type AssetTrap = XcmPallet;
	type AssetClaims = XcmPallet;