lib.rs

// Copyright (C) 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.

//! Statemine runtime.

#![cfg_attr(not(feature = "std"), no_std)]
#![recursion_limit = "256"]

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

pub mod constants;
mod weights;

use sp_api::impl_runtime_apis;
use sp_core::{crypto::KeyTypeId, OpaqueMetadata};
use sp_runtime::{
	create_runtime_str, generic, impl_opaque_keys,
	traits::{AccountIdLookup, BlakeTwo256, Block as BlockT},
	transaction_validity::{TransactionSource, TransactionValidity},
	ApplyExtrinsicResult,
};

use sp_std::prelude::*;
#[cfg(feature = "std")]
use sp_version::NativeVersion;
use sp_version::RuntimeVersion;

use codec::{Decode, Encode, MaxEncodedLen};
use constants::{currency::*, fee::WeightToFee};
use frame_support::{
	construct_runtime, match_type, parameter_types,
	traits::{All, Filter, InstanceFilter},
	weights::{
		constants::{BlockExecutionWeight, ExtrinsicBaseWeight},
		DispatchClass, IdentityFee, Weight,
	},
	PalletId, RuntimeDebug,
};
use frame_system::{
	limits::{BlockLength, BlockWeights},
	EnsureOneOf, EnsureRoot,
};
use sp_runtime::Perbill;
pub use statemint_common as common;
use statemint_common::{
	impls::DealWithFees, AccountId, AuraId, Balance, BlockNumber, Hash, Header, Index, Signature,
	AVERAGE_ON_INITIALIZE_RATIO, HOURS, MAXIMUM_BLOCK_WEIGHT, NORMAL_DISPATCH_RATIO, SLOT_DURATION,
};

#[cfg(any(feature = "std", test))]
pub use sp_runtime::BuildStorage;

// Polkadot imports
use pallet_xcm::{EnsureXcm, IsMajorityOfBody, XcmPassthrough};
use polkadot_parachain::primitives::Sibling;
use polkadot_runtime_common::{BlockHashCount, RocksDbWeight, SlowAdjustingFeeUpdate};
use xcm::v0::{BodyId, Junction, MultiAsset, MultiLocation, NetworkId, Xcm};
use xcm_builder::{
	AccountId32Aliases, AllowTopLevelPaidExecutionFrom, AllowUnpaidExecutionFrom, CurrencyAdapter,
	EnsureXcmOrigin, FixedWeightBounds, IsConcrete, LocationInverter, NativeAsset,
	ParentAsSuperuser, ParentIsDefault, RelayChainAsNative, SiblingParachainAsNative,
	SiblingParachainConvertsVia, SignedAccountId32AsNative, SignedToAccountId32,
	SovereignSignedViaLocation, TakeWeightCredit, UsingComponents,
};
use xcm_executor::{Config, XcmExecutor};

/// Opaque types. These are used by the CLI to instantiate machinery that don't need to know
/// the specifics of the runtime. They can then be made to be agnostic over specific formats
/// of data like extrinsics, allowing for them to continue syncing the network through upgrades
/// to even the core data structures.
pub mod opaque {
	use super::*;
	pub use sp_runtime::OpaqueExtrinsic as UncheckedExtrinsic;
	/// Opaque block header type.
	pub type Header = generic::Header<BlockNumber, BlakeTwo256>;
	/// Opaque block type.
	pub type Block = generic::Block<Header, UncheckedExtrinsic>;
	/// Opaque block identifier type.
	pub type BlockId = generic::BlockId<Block>;
	impl_opaque_keys! {
		pub struct SessionKeys {
			pub aura: Aura,
		}
	}
}

#[sp_version::runtime_version]
pub const VERSION: RuntimeVersion = RuntimeVersion {
	spec_name: create_runtime_str!("statemine"),
	impl_name: create_runtime_str!("statemine"),
	authoring_version: 1,
	spec_version: 1,
	impl_version: 1,
	apis: RUNTIME_API_VERSIONS,
	transaction_version: 1,
};

/// The version information used to identify this runtime when compiled natively.
#[cfg(feature = "std")]
pub fn native_version() -> NativeVersion {
	NativeVersion {
		runtime_version: VERSION,
		can_author_with: Default::default(),
	}
}

parameter_types! {
	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();
	pub const SS58Prefix: u8 = 2;
}

// Don't allow permission-less asset creation.
pub struct BaseFilter;
impl Filter<Call> for BaseFilter {
	fn filter(c: &Call) -> bool {
		!matches!(
			c,
			Call::Assets(pallet_assets::Call::create(..))
				| Call::Uniques(pallet_uniques::Call::create(..))
		)
	}
}

// Configure FRAME pallets to include in runtime.
impl frame_system::Config for Runtime {
	type BaseCallFilter = BaseFilter;
	type BlockWeights = RuntimeBlockWeights;
	type BlockLength = RuntimeBlockLength;
	type AccountId = AccountId;
	type Call = Call;
	type Lookup = AccountIdLookup<AccountId, ()>;
	type Index = Index;
	type BlockNumber = BlockNumber;
	type Hash = Hash;
	type Hashing = BlakeTwo256;
	type Header = Header;
	type Event = Event;
	type Origin = Origin;
	type BlockHashCount = BlockHashCount;
	type DbWeight = RocksDbWeight;
	type Version = Version;
	type PalletInfo = PalletInfo;
	type OnNewAccount = ();
	type OnKilledAccount = ();
	type AccountData = pallet_balances::AccountData<Balance>;
	type SystemWeightInfo = ();
	type SS58Prefix = SS58Prefix;
	type OnSetCode = cumulus_pallet_parachain_system::ParachainSetCode<Self>;
}

parameter_types! {
	pub const MinimumPeriod: u64 = SLOT_DURATION / 2;
}

impl pallet_timestamp::Config for Runtime {
	/// A timestamp: milliseconds since the unix epoch.
	type Moment = u64;
	type OnTimestampSet = ();
	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, Aura>;
	type UncleGenerations = UncleGenerations;
	type FilterUncle = ();
	type EventHandler = (CollatorSelection,);
}

parameter_types! {
	pub const ExistentialDeposit: Balance = EXISTENTIAL_DEPOSIT;
	pub const MaxLocks: u32 = 50;
	pub const MaxReserves: u32 = 50;
}

impl pallet_balances::Config for Runtime {
	type MaxLocks = MaxLocks;
	/// The type for recording an account's balance.
	type Balance = Balance;
	/// The ubiquitous event type.
	type Event = Event;
	type DustRemoval = ();
	type ExistentialDeposit = ExistentialDeposit;
	type AccountStore = System;
	type WeightInfo = weights::pallet_balances::WeightInfo<Runtime>;
	type MaxReserves = MaxReserves;
	type ReserveIdentifier = [u8; 8];
}

parameter_types! {
	/// Relay Chain `TransactionByteFee` / 10
	pub const TransactionByteFee: Balance = 1 * MILLICENTS;
}

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

parameter_types! {
	pub const AssetDeposit: Balance = UNITS; // 1 UNIT deposit to create asset
	pub const ApprovalDeposit: Balance = EXISTENTIAL_DEPOSIT;
	pub const AssetsStringLimit: u32 = 50;
	/// Key = 32 bytes, Value = 36 bytes (32+1+1+1+1)
	// https://github.com/paritytech/substrate/blob/069917b/frame/assets/src/lib.rs#L257L271
	pub const MetadataDepositBase: Balance = deposit(1, 68);
	pub const MetadataDepositPerByte: Balance = deposit(0, 1);
	pub const ExecutiveBody: BodyId = BodyId::Executive;
}

/// We allow root and the Relay Chain council to execute privileged asset operations.
pub type AssetsForceOrigin = EnsureOneOf<
	AccountId,
	EnsureRoot<AccountId>,
	EnsureXcm<IsMajorityOfBody<KsmLocation, ExecutiveBody>>,
>;

impl pallet_assets::Config for Runtime {
	type Event = Event;
	type Balance = Balance;
	type AssetId = u32;
	type Currency = Balances;
	type ForceOrigin = AssetsForceOrigin;
	type AssetDeposit = AssetDeposit;
	type MetadataDepositBase = MetadataDepositBase;
	type MetadataDepositPerByte = MetadataDepositPerByte;
	type ApprovalDeposit = ApprovalDeposit;
	type StringLimit = AssetsStringLimit;
	type Freezer = ();
	type Extra = ();
	type WeightInfo = weights::pallet_assets::WeightInfo<Runtime>;
}

parameter_types! {
	pub const ClassDeposit: Balance = UNITS; // 1 UNIT deposit to create asset class
	pub const InstanceDeposit: Balance = UNITS / 100; // 1/100 UNIT deposit to create asset instance
	pub const KeyLimit: u32 = 32;	// Max 32 bytes per key
	pub const ValueLimit: u32 = 64;	// Max 64 bytes per value
	pub const UniquesMetadataDepositBase: Balance = deposit(1, 129);
	pub const AttributeDepositBase: Balance = deposit(1, 0);
	pub const DepositPerByte: Balance = deposit(0, 1);
	pub const UniquesStringLimit: u32 = 128;
}

impl pallet_uniques::Config for Runtime {
	type Event = Event;
	type ClassId = u32;
	type InstanceId = u32;
	type Currency = Balances;
	type ForceOrigin = AssetsForceOrigin;
	type ClassDeposit = ClassDeposit;
	type InstanceDeposit = InstanceDeposit;
	type MetadataDepositBase = UniquesMetadataDepositBase;
	type AttributeDepositBase = AttributeDepositBase;
	type DepositPerByte = DepositPerByte;
	type StringLimit = UniquesStringLimit;
	type KeyLimit = KeyLimit;
	type ValueLimit = ValueLimit;
	type WeightInfo = weights::pallet_uniques::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>;
}

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

parameter_types! {
	// One storage item; key size 32, value size 8; .
	pub const ProxyDepositBase: Balance = deposit(1, 40);
	// Additional storage item size of 33 bytes.
	pub const ProxyDepositFactor: Balance = deposit(0, 33);
	pub const MaxProxies: u16 = 32;
	// One storage item; key size 32, value size 16
	pub const AnnouncementDepositBase: Balance = deposit(1, 48);
	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,
)]
pub enum ProxyType {
	/// Fully permissioned proxy. Can execute any call on behalf of _proxied_.
	Any,
	/// Can execute any call that does not transfer funds or assets.
	NonTransfer,
	/// Proxy with the ability to reject time-delay proxy announcements.
	CancelProxy,
	/// Assets proxy. Can execute any call from `assets`, **including asset transfers**.
	Assets,
	/// Owner proxy. Can execute calls related to asset ownership.
	AssetOwner,
	/// Asset manager. Can execute calls related to asset management.
	AssetManager,
	// Collator selection proxy. Can execute calls related to collator selection mechanism.
	Collator,
}
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(..))
			}
			ProxyType::CancelProxy => matches!(
				c,
				Call::Proxy(pallet_proxy::Call::reject_announcement(..))
					| Call::Utility(..) | Call::Multisig(..)
			),
			ProxyType::Assets => {
				matches!(
					c,
					Call::Assets(..) | Call::Utility(..) | Call::Multisig(..) | Call::Uniques(..)
				)
			}
			ProxyType::AssetOwner => matches!(
				c,
				Call::Assets(pallet_assets::Call::create(..))
					| Call::Assets(pallet_assets::Call::destroy(..))
					| Call::Assets(pallet_assets::Call::transfer_ownership(..))
					| Call::Assets(pallet_assets::Call::set_team(..))
					| Call::Assets(pallet_assets::Call::set_metadata(..))
					| Call::Assets(pallet_assets::Call::clear_metadata(..))
					| Call::Uniques(pallet_uniques::Call::create(..))
					| Call::Uniques(pallet_uniques::Call::destroy(..))
					| Call::Uniques(pallet_uniques::Call::transfer_ownership(..))
					| Call::Uniques(pallet_uniques::Call::set_team(..))
					| Call::Uniques(pallet_uniques::Call::set_metadata(..))
					| Call::Uniques(pallet_uniques::Call::set_attribute(..))
					| Call::Uniques(pallet_uniques::Call::set_class_metadata(..))
					| Call::Uniques(pallet_uniques::Call::clear_metadata(..))
					| Call::Uniques(pallet_uniques::Call::clear_attribute(..))
					| Call::Uniques(pallet_uniques::Call::clear_class_metadata(..))
					| Call::Utility(..) | Call::Multisig(..)
			),
			ProxyType::AssetManager => matches!(
				c,
				Call::Assets(pallet_assets::Call::mint(..))
					| Call::Assets(pallet_assets::Call::burn(..))
					| Call::Assets(pallet_assets::Call::freeze(..))
					| Call::Assets(pallet_assets::Call::thaw(..))
					| Call::Assets(pallet_assets::Call::freeze_asset(..))
					| Call::Assets(pallet_assets::Call::thaw_asset(..))
					| Call::Uniques(pallet_uniques::Call::mint(..))
					| Call::Uniques(pallet_uniques::Call::burn(..))
					| Call::Uniques(pallet_uniques::Call::freeze(..))
					| Call::Uniques(pallet_uniques::Call::thaw(..))
					| Call::Uniques(pallet_uniques::Call::freeze_class(..))
					| Call::Uniques(pallet_uniques::Call::thaw_class(..))
					| Call::Utility(..) | Call::Multisig(..)
			),
			ProxyType::Collator => matches!(
				c,
				Call::CollatorSelection(..) | Call::Utility(..) | Call::Multisig(..)
			),
		}
	}
	fn is_superset(&self, o: &Self) -> bool {
		match (self, o) {
			(x, y) if x == y => true,
			(ProxyType::Any, _) => true,
			(_, ProxyType::Any) => false,
			(ProxyType::Assets, ProxyType::AssetOwner) => true,
			(ProxyType::Assets, ProxyType::AssetManager) => 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;
}

parameter_types! {
	pub const ReservedXcmpWeight: Weight = MAXIMUM_BLOCK_WEIGHT / 4;
	pub const ReservedDmpWeight: Weight = MAXIMUM_BLOCK_WEIGHT / 4;
}

impl cumulus_pallet_parachain_system::Config for Runtime {
	type Event = Event;
	type OnValidationData = ();
	type SelfParaId = parachain_info::Pallet<Runtime>;
	type DmpMessageHandler = DmpQueue;
	type ReservedDmpWeight = ReservedDmpWeight;
	type OutboundXcmpMessageSource = XcmpQueue;
	type XcmpMessageHandler = XcmpQueue;
	type ReservedXcmpWeight = ReservedXcmpWeight;
}

impl pallet_randomness_collective_flip::Config for Runtime {}

impl parachain_info::Config for Runtime {}

impl cumulus_pallet_aura_ext::Config for Runtime {}

parameter_types! {
	pub const KsmLocation: MultiLocation = MultiLocation::X1(Junction::Parent);
	pub const RelayNetwork: NetworkId = NetworkId::Kusama;
	pub RelayChainOrigin: Origin = cumulus_pallet_xcm::Origin::Relay.into();
	pub Ancestry: MultiLocation = Junction::Parachain(ParachainInfo::parachain_id().into()).into();
}

/// Type for specifying how a `MultiLocation` can be converted into an `AccountId`. This is used
/// when determining ownership of accounts for asset transacting and when attempting to use XCM
/// `Transact` in order to determine the dispatch Origin.
pub type LocationToAccountId = (
	// The parent (Relay-chain) origin converts to the default `AccountId`.
	ParentIsDefault<AccountId>,
	// Sibling parachain origins convert to AccountId via the `ParaId::into`.
	SiblingParachainConvertsVia<Sibling, AccountId>,
	// Straight up local `AccountId32` origins just alias directly to `AccountId`.
	AccountId32Aliases<RelayNetwork, AccountId>,
);

/// Means for transacting assets on this chain.
pub type LocalAssetTransactor = CurrencyAdapter<
	// Use this currency:
	Balances,
	// Use this currency when it is a fungible asset matching the given location or name:
	IsConcrete<KsmLocation>,
	// Do a simple punn to convert an AccountId32 MultiLocation into a native chain account ID:
	LocationToAccountId,
	// Our chain's account ID type (we can't get away without mentioning it explicitly):
	AccountId,
	// We don't track any teleports.
	(),
>;

/// This is the type we use to convert an (incoming) XCM origin into a local `Origin` instance,
/// ready for dispatching a transaction with Xcm's `Transact`. There is an `OriginKind` which can
/// biases the kind of local `Origin` it will become.
pub type XcmOriginToTransactDispatchOrigin = (
	// Sovereign account converter; this attempts to derive an `AccountId` from the origin location
	// using `LocationToAccountId` and then turn that into the usual `Signed` origin. Useful for
	// foreign chains who want to have a local sovereign account on this chain which they control.
	SovereignSignedViaLocation<LocationToAccountId, Origin>,
	// Native converter for Relay-chain (Parent) location; will converts to a `Relay` origin when
	// recognised.
	RelayChainAsNative<RelayChainOrigin, Origin>,
	// Native converter for sibling Parachains; will convert to a `SiblingPara` origin when
	// recognised.
	SiblingParachainAsNative<cumulus_pallet_xcm::Origin, Origin>,
	// Superuser converter for the Relay-chain (Parent) location. This will allow it to issue a
	// transaction from the Root origin.
	ParentAsSuperuser<Origin>,
	// Native signed account converter; this just converts an `AccountId32` origin into a normal
	// `Origin::Signed` origin of the same 32-byte value.
	SignedAccountId32AsNative<RelayNetwork, Origin>,
	// Xcm origins can be represented natively under the Xcm pallet's Xcm origin.
	XcmPassthrough<Origin>,
);

parameter_types! {
	// One XCM operation is 1_000_000_000 weight - almost certainly a conservative estimate.
	pub UnitWeightCost: Weight = 1_000_000_000;
}

match_type! {
	pub type ParentOrParentsExecutivePlurality: impl Contains<MultiLocation> = {
		MultiLocation::X1(Junction::Parent) |
		MultiLocation::X2(Junction::Parent, Junction::Plurality { id: BodyId::Executive, .. })
	};
}

pub type Barrier = (
	TakeWeightCredit,
	AllowTopLevelPaidExecutionFrom<All<MultiLocation>>,
	AllowUnpaidExecutionFrom<ParentOrParentsExecutivePlurality>,
	// ^^^ Parent and its exec plurality get free execution
);

pub struct XcmConfig;
impl Config for XcmConfig {
	type Call = Call;
	type XcmSender = XcmRouter;
	// How to withdraw and deposit an asset.
	type AssetTransactor = LocalAssetTransactor;
	type OriginConverter = XcmOriginToTransactDispatchOrigin;
	type IsReserve = NativeAsset;
	type IsTeleporter = NativeAsset; // <- should be enough to allow teleportation of KSM
	type LocationInverter = LocationInverter<Ancestry>;
	type Barrier = Barrier;
	type Weigher = FixedWeightBounds<UnitWeightCost, Call>;
	type Trader = UsingComponents<IdentityFee<Balance>, KsmLocation, AccountId, Balances, ()>;
	type ResponseHandler = (); // Don't handle responses for now.
}

parameter_types! {
	pub const MaxDownwardMessageWeight: Weight = MAXIMUM_BLOCK_WEIGHT / 10;
}

/// No local origins on this chain are allowed to dispatch XCM sends/executions.
pub type LocalOriginToLocation = SignedToAccountId32<Origin, AccountId, RelayNetwork>;

/// The means for routing XCM messages which are not for local execution into the right message
/// queues.
pub type XcmRouter = (
	// Two routers - use UMP to communicate with the relay chain:
	cumulus_primitives_utility::ParentAsUmp<ParachainSystem>,
	// ..and XCMP to communicate with the sibling chains.
	XcmpQueue,
);

impl pallet_xcm::Config for Runtime {
	type Event = Event;
	type SendXcmOrigin = EnsureXcmOrigin<Origin, LocalOriginToLocation>;
	type XcmRouter = XcmRouter;
	type ExecuteXcmOrigin = EnsureXcmOrigin<Origin, LocalOriginToLocation>;
	type XcmExecuteFilter = All<(MultiLocation, Xcm<Call>)>;
	type XcmExecutor = XcmExecutor<XcmConfig>;
	type XcmTeleportFilter = All<(MultiLocation, Vec<MultiAsset>)>;
	type XcmReserveTransferFilter = All<(MultiLocation, Vec<MultiAsset>)>;
	type Weigher = FixedWeightBounds<UnitWeightCost, Call>;
}

impl cumulus_pallet_xcm::Config for Runtime {
	type Event = Event;
	type XcmExecutor = XcmExecutor<XcmConfig>;
}

impl cumulus_pallet_xcmp_queue::Config for Runtime {
	type Event = Event;
	type XcmExecutor = XcmExecutor<XcmConfig>;
	type ChannelInfo = ParachainSystem;
}

impl cumulus_pallet_dmp_queue::Config for Runtime {
	type Event = Event;
	type XcmExecutor = XcmExecutor<XcmConfig>;
	type ExecuteOverweightOrigin = EnsureRoot<AccountId>;
}

parameter_types! {
	pub const DisabledValidatorsThreshold: Perbill = Perbill::from_percent(33);
	pub const Period: u32 = 6 * HOURS;
	pub const Offset: u32 = 0;
}

impl pallet_session::Config for Runtime {
	type Event = Event;
	type ValidatorId = <Self as frame_system::Config>::AccountId;
	// we don't have stash and controller, thus we don't need the convert as well.
	type ValidatorIdOf = pallet_collator_selection::IdentityCollator;
	type ShouldEndSession = pallet_session::PeriodicSessions<Period, Offset>;
	type NextSessionRotation = pallet_session::PeriodicSessions<Period, Offset>;
	type SessionManager = CollatorSelection;
	// Essentially just Aura, but lets be pedantic.
	type SessionHandler =
		<opaque::SessionKeys as sp_runtime::traits::OpaqueKeys>::KeyTypeIdProviders;
	type Keys = opaque::SessionKeys;
	type DisabledValidatorsThreshold = DisabledValidatorsThreshold;
	type WeightInfo = weights::pallet_session::WeightInfo<Runtime>;
}

impl pallet_aura::Config for Runtime {
	type AuthorityId = AuraId;
}

parameter_types! {
	pub const PotId: PalletId = PalletId(*b"PotStake");
	pub const MaxCandidates: u32 = 1000;
	pub const MinCandidates: u32 = 5;
	pub const SessionLength: BlockNumber = 6 * HOURS;
	pub const MaxInvulnerables: u32 = 100;
}

/// We allow root and the Relay Chain council to execute privileged collator selection operations.
pub type CollatorSelectionUpdateOrigin = EnsureOneOf<
	AccountId,
	EnsureRoot<AccountId>,
	EnsureXcm<IsMajorityOfBody<KsmLocation, ExecutiveBody>>,
>;

impl pallet_collator_selection::Config for Runtime {
	type Event = Event;
	type Currency = Balances;
	type UpdateOrigin = CollatorSelectionUpdateOrigin;
	type PotId = PotId;
	type MaxCandidates = MaxCandidates;
	type MinCandidates = MinCandidates;
	type MaxInvulnerables = MaxInvulnerables;
	// should be a multiple of session or things will get inconsistent
	type KickThreshold = Period;
	type ValidatorId = <Self as frame_system::Config>::AccountId;
	type ValidatorIdOf = pallet_collator_selection::IdentityCollator;
	type ValidatorRegistration = Session;
	type WeightInfo = weights::pallet_collator_selection::WeightInfo<Runtime>;
}

// Create the runtime by composing the FRAME pallets that were previously configured.
construct_runtime!(
	pub enum Runtime where
		Block = Block,
		NodeBlock = opaque::Block,
		UncheckedExtrinsic = UncheckedExtrinsic,
	{
		// System support stuff.
		System: frame_system::{Pallet, Call, Config, Storage, Event<T>} = 0,
		ParachainSystem: cumulus_pallet_parachain_system::{Pallet, Call, Config, Storage, Inherent, Event<T>} = 1,
		RandomnessCollectiveFlip: pallet_randomness_collective_flip::{Pallet, Storage} = 2,
		Timestamp: pallet_timestamp::{Pallet, Call, Storage, Inherent} = 3,
		ParachainInfo: parachain_info::{Pallet, Storage, Config} = 4,

		// Monetary stuff.
		Balances: pallet_balances::{Pallet, Call, Storage, Config<T>, Event<T>} = 10,
		TransactionPayment: pallet_transaction_payment::{Pallet, Storage} = 11,

		// Collator support. the order of these 4 are important and shall not change.
		Authorship: pallet_authorship::{Pallet, Call, Storage} = 20,
		CollatorSelection: pallet_collator_selection::{Pallet, Call, Storage, Event<T>, Config<T>} = 21,
		Session: pallet_session::{Pallet, Call, Storage, Event, Config<T>} = 22,
		Aura: pallet_aura::{Pallet, Storage, Config<T>} = 23,
		AuraExt: cumulus_pallet_aura_ext::{Pallet, Storage, Config} = 24,

		// XCM helpers.
		XcmpQueue: cumulus_pallet_xcmp_queue::{Pallet, Call, Storage, Event<T>} = 30,
		PolkadotXcm: pallet_xcm::{Pallet, Call, Event<T>, Origin} = 31,
		CumulusXcm: cumulus_pallet_xcm::{Pallet, Event<T>, Origin} = 32,
		DmpQueue: cumulus_pallet_dmp_queue::{Pallet, Call, Storage, Event<T>} = 33,

		// Handy utilities.
		Utility: pallet_utility::{Pallet, Call, Event} = 40,
		Multisig: pallet_multisig::{Pallet, Call, Storage, Event<T>} = 41,
		Proxy: pallet_proxy::{Pallet, Call, Storage, Event<T>} = 42,

		// The main stage. To include pallet-assets-freezer and pallet-uniques.
		Assets: pallet_assets::{Pallet, Call, Storage, Event<T>} = 50,
		Uniques: pallet_uniques::{Pallet, Call, Storage, Event<T>} = 51,
	}
);

/// The address format for describing accounts.
pub type Address = sp_runtime::MultiAddress<AccountId, ()>;
/// Block type as expected by this runtime.
pub type Block = generic::Block<Header, UncheckedExtrinsic>;
/// A Block signed with a Justification
pub type SignedBlock = generic::SignedBlock<Block>;
/// BlockId type as expected by this runtime.
pub type BlockId = generic::BlockId<Block>;
/// The SignedExtension to the basic transaction logic.
pub type SignedExtra = (
	frame_system::CheckSpecVersion<Runtime>,
	frame_system::CheckTxVersion<Runtime>,
	frame_system::CheckGenesis<Runtime>,
	frame_system::CheckEra<Runtime>,
	frame_system::CheckNonce<Runtime>,
	frame_system::CheckWeight<Runtime>,
	pallet_transaction_payment::ChargeTransactionPayment<Runtime>,
);
/// Unchecked extrinsic type as expected by this runtime.
pub type UncheckedExtrinsic = generic::UncheckedExtrinsic<Address, Call, Signature, SignedExtra>;
/// Extrinsic type that has already been checked.
pub type CheckedExtrinsic = generic::CheckedExtrinsic<AccountId, Call, SignedExtra>;
/// Executive: handles dispatch to the various modules.
pub type Executive = frame_executive::Executive<
	Runtime,
	Block,
	frame_system::ChainContext<Runtime>,
	Runtime,
	AllPallets,
	OnRuntimeUpgrade,
>;

pub struct OnRuntimeUpgrade;
impl frame_support::traits::OnRuntimeUpgrade for OnRuntimeUpgrade {
	fn on_runtime_upgrade() -> u64 {
		sp_io::storage::set(b":c", &[]);
		RocksDbWeight::get().writes(1)
	}
}

impl_runtime_apis! {
	impl sp_consensus_aura::AuraApi<Block, AuraId> for Runtime {
		fn slot_duration() -> sp_consensus_aura::SlotDuration {
			sp_consensus_aura::SlotDuration::from_millis(Aura::slot_duration())
		}

		fn authorities() -> Vec<AuraId> {
			Aura::authorities()
		}
	}

	impl sp_api::Core<Block> for Runtime {
		fn version() -> RuntimeVersion {
			VERSION
		}

		fn execute_block(block: Block) {
			Executive::execute_block(block)
		}

		fn initialize_block(header: &<Block as BlockT>::Header) {
			Executive::initialize_block(header)
		}
	}

	impl sp_api::Metadata<Block> for Runtime {
		fn metadata() -> OpaqueMetadata {
			Runtime::metadata().into()
		}
	}

	impl sp_block_builder::BlockBuilder<Block> for Runtime {
		fn apply_extrinsic(extrinsic: <Block as BlockT>::Extrinsic) -> ApplyExtrinsicResult {
			Executive::apply_extrinsic(extrinsic)
		}

		fn finalize_block() -> <Block as BlockT>::Header {
			Executive::finalize_block()
		}

		fn inherent_extrinsics(data: sp_inherents::InherentData) -> Vec<<Block as BlockT>::Extrinsic> {
			data.create_extrinsics()
		}

		fn check_inherents(
			block: Block,
			data: sp_inherents::InherentData,
		) -> sp_inherents::CheckInherentsResult {
			data.check_extrinsics(&block)
		}
	}

	impl sp_transaction_pool::runtime_api::TaggedTransactionQueue<Block> for Runtime {
		fn validate_transaction(
			source: TransactionSource,
			tx: <Block as BlockT>::Extrinsic,
			block_hash: <Block as BlockT>::Hash,
		) -> TransactionValidity {
			Executive::validate_transaction(source, tx, block_hash)
		}
	}

	impl sp_offchain::OffchainWorkerApi<Block> for Runtime {
		fn offchain_worker(header: &<Block as BlockT>::Header) {
			Executive::offchain_worker(header)
		}
	}

	impl sp_session::SessionKeys<Block> for Runtime {
		fn generate_session_keys(seed: Option<Vec<u8>>) -> Vec<u8> {
			opaque::SessionKeys::generate(seed)
		}

		fn decode_session_keys(
			encoded: Vec<u8>,
		) -> Option<Vec<(Vec<u8>, KeyTypeId)>> {
			opaque::SessionKeys::decode_into_raw_public_keys(&encoded)
		}
	}

	impl frame_system_rpc_runtime_api::AccountNonceApi<Block, AccountId, Index> for Runtime {
		fn account_nonce(account: AccountId) -> Index {
			System::account_nonce(account)
		}
	}

	impl pallet_transaction_payment_rpc_runtime_api::TransactionPaymentApi<Block, Balance> for Runtime {
		fn query_info(
			uxt: <Block as BlockT>::Extrinsic,
			len: u32,
		) -> pallet_transaction_payment_rpc_runtime_api::RuntimeDispatchInfo<Balance> {
			TransactionPayment::query_info(uxt, len)
		}
		fn query_fee_details(
			uxt: <Block as BlockT>::Extrinsic,
			len: u32,
		) -> pallet_transaction_payment::FeeDetails<Balance> {
			TransactionPayment::query_fee_details(uxt, len)
		}
	}

	impl cumulus_primitives_core::CollectCollationInfo<Block> for Runtime {
		fn collect_collation_info() -> cumulus_primitives_core::CollationInfo {
			ParachainSystem::collect_collation_info()
		}
	}

	#[cfg(feature = "runtime-benchmarks")]
	impl frame_benchmarking::Benchmark<Block> for Runtime {
		fn dispatch_benchmark(
			config: frame_benchmarking::BenchmarkConfig
		) -> Result<Vec<frame_benchmarking::BenchmarkBatch>, sp_runtime::RuntimeString> {
			use frame_benchmarking::{Benchmarking, BenchmarkBatch, add_benchmark, TrackedStorageKey};

			use frame_system_benchmarking::Pallet as SystemBench;
			impl frame_system_benchmarking::Config for Runtime {}

			use cumulus_pallet_session_benchmarking::Pallet as SessionBench;
			impl cumulus_pallet_session_benchmarking::Config for Runtime {}

			let whitelist: Vec<TrackedStorageKey> = vec![
				// Block Number
				hex_literal::hex!("26aa394eea5630e07c48ae0c9558cef702a5c1b19ab7a04f536c519aca4983ac").to_vec().into(),
				// Total Issuance
				hex_literal::hex!("c2261276cc9d1f8598ea4b6a74b15c2f57c875e4cff74148e4628f264b974c80").to_vec().into(),
				// Execution Phase
				hex_literal::hex!("26aa394eea5630e07c48ae0c9558cef7ff553b5a9862a516939d82b3d3d8661a").to_vec().into(),
				// Event Count
				hex_literal::hex!("26aa394eea5630e07c48ae0c9558cef70a98fdbe9ce6c55837576c60c7af3850").to_vec().into(),
				// System Events
				hex_literal::hex!("26aa394eea5630e07c48ae0c9558cef780d41e5e16056765bc8461851072c9d7").to_vec().into(),
			];

			let mut batches = Vec::<BenchmarkBatch>::new();
			let params = (&config, &whitelist);

			add_benchmark!(params, batches, frame_system, SystemBench::<Runtime>);
			add_benchmark!(params, batches, pallet_assets, Assets);
			add_benchmark!(params, batches, pallet_balances, Balances);
			add_benchmark!(params, batches, pallet_multisig, Multisig);
			add_benchmark!(params, batches, pallet_proxy, Proxy);
			add_benchmark!(params, batches, pallet_session, SessionBench::<Runtime>);
			add_benchmark!(params, batches, pallet_uniques, Uniques);
			add_benchmark!(params, batches, pallet_utility, Utility);
			add_benchmark!(params, batches, pallet_timestamp, Timestamp);
			add_benchmark!(params, batches, pallet_collator_selection, CollatorSelection);

			if batches.is_empty() { return Err("Benchmark not found for this pallet.".into()) }
			Ok(batches)
		}
	}
}

struct CheckInherents;

impl cumulus_pallet_parachain_system::CheckInherents<Block> for CheckInherents {
	fn check_inherents(
		block: &Block,
		relay_state_proof: &cumulus_pallet_parachain_system::RelayChainStateProof,
	) -> sp_inherents::CheckInherentsResult {
		let relay_chain_slot = relay_state_proof
			.read_slot()
			.expect("Could not read the relay chain slot from the proof");

		let inherent_data =
			cumulus_primitives_timestamp::InherentDataProvider::from_relay_chain_slot_and_duration(
				relay_chain_slot,
				sp_std::time::Duration::from_secs(6),
			)
			.create_inherent_data()
			.expect("Could not create the timestamp inherent data");

		inherent_data.check_extrinsics(&block)
	}
}

cumulus_pallet_parachain_system::register_validate_block! {
	Runtime = Runtime,
	BlockExecutor = cumulus_pallet_aura_ext::BlockExecutor::<Runtime, Executive>,
	CheckInherents = CheckInherents,
}