// Copyright 2021 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/>.

//! Relay chain runtime mock.

use frame_support::traits::Disabled;

use frame_support::{

	construct_runtime, parameter_types,

	traits::{AsEnsureOriginWithArg, Contains, ContainsPair, Everything, Get, Nothing},

	weights::Weight,

};

use frame_system::{EnsureRoot, EnsureSigned};

use polkadot_core_primitives::BlockNumber as RelayBlockNumber;

use sp_core::H256;

use sp_runtime::{

	traits::{ConstU32, Hash, IdentityLookup},

	AccountId32,

};

use polkadot_parachain::primitives::Id as ParaId;

use polkadot_parachain::primitives::Sibling;

use sp_std::convert::TryFrom;

use xcm::latest::prelude::*;

use xcm::VersionedXcm;

use xcm_builder::{

	AccountId32Aliases, AllowKnownQueryResponses, AllowSubscriptionsFrom,

	AllowTopLevelPaidExecutionFrom, AllowUnpaidExecutionFrom, AsPrefixedGeneralIndex,

	ConvertedConcreteId, EnsureXcmOrigin, FixedRateOfFungible, FixedWeightBounds, FungibleAdapter,

	FungiblesAdapter, IsConcrete, NoChecking, ParentAsSuperuser, ParentIsPreset,

	RelayChainAsNative, SiblingParachainAsNative, SiblingParachainConvertsVia,

	SignedAccountId32AsNative, SignedToAccountId32, SovereignSignedViaLocation, TakeWeightCredit,

};

use xcm_executor::{traits::JustTry, Config, XcmExecutor};

use xcm_simulator::{

	DmpMessageHandlerT as DmpMessageHandler, XcmpMessageFormat,

	XcmpMessageHandlerT as XcmpMessageHandler,

};

pub type AccountId = AccountId32;

pub type Balance = u128;

pub type AssetId = u128;

pub type ReserveId = u128;

parameter_types! {

	pub const BlockHashCount: u32 = 250;

}

impl frame_system::Config for Runtime {

	type RuntimeOrigin = RuntimeOrigin;

	type RuntimeCall = RuntimeCall;

	type RuntimeTask = RuntimeTask;

	type Nonce = u64;

	type Block = Block;

	type Hash = H256;

	type Hashing = ::sp_runtime::traits::BlakeTwo256;

	type AccountId = AccountId;

	type Lookup = IdentityLookup<Self::AccountId>;

	type RuntimeEvent = RuntimeEvent;

	type BlockHashCount = BlockHashCount;

	type BlockWeights = ();

	type BlockLength = ();

	type Version = ();

	type PalletInfo = PalletInfo;

	type AccountData = pallet_balances::AccountData<Balance>;

	type OnNewAccount = ();

	type OnKilledAccount = ();

	type DbWeight = ();

	type BaseCallFilter = Everything;

	type SystemWeightInfo = ();

	type SS58Prefix = ();

	type OnSetCode = ();

	type MaxConsumers = frame_support::traits::ConstU32<16>;

	type SingleBlockMigrations = ();

	type MultiBlockMigrator = ();

	type PreInherents = ();

	type PostInherents = ();

	type PostTransactions = ();

	type ExtensionsWeightInfo = ();

}

parameter_types! {

	pub ExistentialDeposit: Balance = 1;

	pub const MaxLocks: u32 = 50;

	pub const MaxReserves: u32 = 50;

}

impl pallet_balances::Config for Runtime {

	type MaxLocks = MaxLocks;

	type Balance = Balance;

	type RuntimeEvent = RuntimeEvent;

	type DustRemoval = ();

	type ExistentialDeposit = ExistentialDeposit;

	type AccountStore = System;

	type WeightInfo = ();

	type MaxReserves = MaxReserves;

	type ReserveIdentifier = [u8; 8];

	type RuntimeHoldReason = ();

	type FreezeIdentifier = ();

	type MaxFreezes = ();

	type RuntimeFreezeReason = ();

	type DoneSlashHandler = ();

}

// Required for runtime benchmarks

pallet_assets::runtime_benchmarks_enabled! {

	pub struct BenchmarkHelper;

	impl<AssetIdParameter, ReserveIdParameter> pallet_assets::BenchmarkHelper<AssetIdParameter, ReserveIdParameter> for BenchmarkHelper

	where

		AssetIdParameter: From<u128>,

		ReserveIdParameter: From<u128>,

	{

		fn create_asset_id_parameter(id: u32) -> AssetIdParameter {

			(id as u128).into()

		}

		fn create_reserve_id_parameter(id: u32) -> ReserveIdParameter {

			(id as u128).into()

		}

	}

}

parameter_types! {

	pub const AssetDeposit: Balance = 0; // 1 UNIT deposit to create asset

	pub const ApprovalDeposit: Balance = 0;

	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 = 0;

	pub const MetadataDepositPerByte: Balance = 0;

	pub const ExecutiveBody: BodyId = BodyId::Executive;

	pub const AssetAccountDeposit: Balance = 0;

}

impl pallet_assets::Config for Runtime {

	type RuntimeEvent = RuntimeEvent;

	type Balance = Balance;

	type AssetId = AssetId;

	type Currency = Balances;

	type ForceOrigin = EnsureRoot<AccountId>;

	type AssetDeposit = AssetDeposit;

	type MetadataDepositBase = MetadataDepositBase;

	type MetadataDepositPerByte = MetadataDepositPerByte;

	type ApprovalDeposit = ApprovalDeposit;

	type StringLimit = AssetsStringLimit;

	type Freezer = ();

	type Extra = ();

	type AssetAccountDeposit = AssetAccountDeposit;

	type WeightInfo = ();

	type RemoveItemsLimit = ConstU32<656>;

	type AssetIdParameter = AssetId;

	type ReserveData = ReserveId;

	type CreateOrigin = AsEnsureOriginWithArg<EnsureSigned<AccountId>>;

	type CallbackHandle = ();

	type Holder = ();

	pallet_assets::runtime_benchmarks_enabled! {

		type BenchmarkHelper = BenchmarkHelper;

	}

}

parameter_types! {

	pub const KsmLocation: Location = Location::parent();

	pub const RelayNetwork: NetworkId = NetworkId::Kusama;

	pub RelayChainOrigin: RuntimeOrigin = cumulus_pallet_xcm::Origin::Relay.into();

	pub UniversalLocation: InteriorLocation =

		[GlobalConsensus(RelayNetwork::get()), Parachain(MsgQueue::parachain_id().into())].into();

	pub Local: Location = Here.into();

	pub CheckingAccount: AccountId = PolkadotXcm::check_account();

	pub KsmPerSecond: (xcm::latest::prelude::AssetId, u128, u128) =

		(AssetId(KsmLocation::get()), 1, 1);

}

/// Type for specifying how a `Location` 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`.

	ParentIsPreset<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 the native currency on this chain.

pub type CurrencyTransactor = FungibleAdapter<

	// Use this currency:

	Balances,

	// Use this currency when it is a fungible asset matching the given location or name:

	IsConcrete<KsmLocation>,

	// Convert an XCM Location into a local 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 of `Balances`.

	(),

>;

/// Means for transacting assets besides the native currency on this chain.

pub type FungiblesTransactor = FungiblesAdapter<

	// Use this fungibles implementation:

	Assets,

	// Use this currency when it is a fungible asset matching the given location or name:

	ConvertedConcreteId<

		AssetId,

		Balance,

		AsPrefixedGeneralIndex<PrefixChanger, AssetId, JustTry>,

		JustTry,

	>,

	// Convert an XCM Location into a local account id:

	LocationToAccountId,

	// Our chain's account ID type (we can't get away without mentioning it explicitly):

	AccountId,

	// We only want to allow teleports of known assets. We use non-zero issuance as an indication

	// that this asset is known.

	NoChecking,

	// The account to use for tracking teleports.

	CheckingAccount,

>;

/// Means for transacting assets on this chain.

pub type AssetTransactors = (CurrencyTransactor, FungiblesTransactor);

/// 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, RuntimeOrigin>,

	// Native converter for Relay-chain (Parent) location; will convert to a `Relay` origin when

	// recognised.

	RelayChainAsNative<RelayChainOrigin, RuntimeOrigin>,

	// Native converter for sibling Parachains; will convert to a `SiblingPara` origin when

	// recognised.

	SiblingParachainAsNative<cumulus_pallet_xcm::Origin, RuntimeOrigin>,

	// Superuser converter for the Relay-chain (Parent) location. This will allow it to issue a

	// transaction from the Root origin.

	ParentAsSuperuser<RuntimeOrigin>,

	// Native signed account converter; this just converts an `AccountId32` origin into a normal

	// `RuntimeOrigin::signed` origin of the same 32-byte value.

	SignedAccountId32AsNative<RelayNetwork, RuntimeOrigin>,

	// Xcm origins can be represented natively under the Xcm pallet's Xcm origin.

	pallet_xcm::XcmPassthrough<RuntimeOrigin>,

);

parameter_types! {

	// One XCM operation is 1_000_000_000 weight - almost certainly a conservative estimate.

	pub UnitWeightCost: Weight = Weight::from_parts(100u64, 100u64);

	pub const MaxInstructions: u32 = 100;

}

pub struct ParentOrParentsExecutivePlurality;

impl Contains<Location> for ParentOrParentsExecutivePlurality {

				| (

					1,

				)

		)

}

pub struct ParentOrSiblings;

impl Contains<Location> for ParentOrSiblings {

}

pub type Barrier = (

	TakeWeightCredit,

	AllowTopLevelPaidExecutionFrom<Everything>,

	// Parent and its exec plurality get free execution

	AllowUnpaidExecutionFrom<ParentOrParentsExecutivePlurality>,

	// Expected responses are OK.

	AllowKnownQueryResponses<PolkadotXcm>,

	// Subscriptions for version tracking are OK.

	AllowSubscriptionsFrom<ParentOrSiblings>,

);

parameter_types! {

	pub MatcherLocation: Location = Location::here();

	pub const MaxAssetsIntoHolding: u32 = 64;

	pub const RelayTokenLocation: Location = Location::parent();

}

// Copied from:

//

// https://github.com/paritytech/polkadot-sdk/blob/f4eb41773611008040c9d4d8a8e6b7323eccfca1/cumulus

// /parachains/common/src/xcm_config.rs#L118

//

// The difference with the original "ConcreteAssetFromSystem" (which is used by AssetHub),

// is that in our tests we only need to check if the asset matches the relay one.

pub struct ConcreteAssetFromRelay<AssetLocation>(sp_std::marker::PhantomData<AssetLocation>);

impl<AssetLocation: Get<Location>> ContainsPair<Asset, Location>

	for ConcreteAssetFromRelay<AssetLocation>

{

			// The Relay Chain

			// Others

		};

}

pub type TrustedTeleporters = (ConcreteAssetFromRelay<RelayTokenLocation>,);

pub struct XcmConfig;

impl Config for XcmConfig {

	type RuntimeCall = RuntimeCall;

	type XcmSender = XcmRouter;

	type AssetTransactor = AssetTransactors;

	type OriginConverter = XcmOriginToTransactDispatchOrigin;

	type IsReserve = xcm_primitives::MultiNativeAsset<xcm_primitives::RelativeReserveProvider>;

	type IsTeleporter = TrustedTeleporters;

	type UniversalLocation = UniversalLocation;

	type Barrier = Barrier;

	type Weigher = FixedWeightBounds<UnitWeightCost, RuntimeCall, MaxInstructions>;

	type Trader = FixedRateOfFungible<KsmPerSecond, ()>;

	type ResponseHandler = PolkadotXcm;

	type AssetTrap = PolkadotXcm;

	type AssetClaims = PolkadotXcm;

	type SubscriptionService = PolkadotXcm;

	type CallDispatcher = RuntimeCall;

	type AssetLocker = ();

	type AssetExchanger = ();

	type PalletInstancesInfo = ();

	type MaxAssetsIntoHolding = MaxAssetsIntoHolding;

	type FeeManager = ();

	type MessageExporter = ();

	type UniversalAliases = Nothing;

	type SafeCallFilter = Everything;

	type Aliasers = Nothing;

	type TransactionalProcessor = ();

	type HrmpNewChannelOpenRequestHandler = ();

	type HrmpChannelAcceptedHandler = ();

	type HrmpChannelClosingHandler = ();

	type XcmRecorder = PolkadotXcm;

	type XcmEventEmitter = PolkadotXcm;

}

/// No local origins on this chain are allowed to dispatch XCM sends/executions.

pub type LocalOriginToLocation = SignedToAccountId32<RuntimeOrigin, AccountId, RelayNetwork>;

pub type XcmRouter = super::ParachainXcmRouter<MsgQueue>;

impl pallet_xcm::Config for Runtime {

	type RuntimeEvent = RuntimeEvent;

	type SendXcmOrigin = EnsureXcmOrigin<RuntimeOrigin, LocalOriginToLocation>;

	type XcmRouter = XcmRouter;

	type ExecuteXcmOrigin = EnsureXcmOrigin<RuntimeOrigin, LocalOriginToLocation>;

	type XcmExecuteFilter = Nothing;

	type XcmExecutor = XcmExecutor<XcmConfig>;

	type XcmTeleportFilter = Everything;

	type XcmReserveTransferFilter = Everything;

	type Weigher = FixedWeightBounds<UnitWeightCost, RuntimeCall, MaxInstructions>;

	type UniversalLocation = UniversalLocation;

	type RuntimeOrigin = RuntimeOrigin;

	type RuntimeCall = RuntimeCall;

	const VERSION_DISCOVERY_QUEUE_SIZE: u32 = 100;

	type AdvertisedXcmVersion = pallet_xcm::CurrentXcmVersion;

	type Currency = Balances;

	type CurrencyMatcher = IsConcrete<MatcherLocation>;

	type TrustedLockers = ();

	type SovereignAccountOf = ();

	type MaxLockers = ConstU32<8>;

	type WeightInfo = pallet_xcm::TestWeightInfo;

	type MaxRemoteLockConsumers = ConstU32<0>;

	type RemoteLockConsumerIdentifier = ();

	type AdminOrigin = frame_system::EnsureRoot<AccountId>;

	type AuthorizedAliasConsideration = Disabled;

}

impl cumulus_pallet_xcm::Config for Runtime {

	type RuntimeEvent = RuntimeEvent;

	type XcmExecutor = XcmExecutor<XcmConfig>;

}

#[frame_support::pallet]

pub mod mock_msg_queue {

	use super::*;

	use frame_support::pallet_prelude::*;

	#[pallet::config]

	pub trait Config: frame_system::Config {

		type XcmExecutor: ExecuteXcm<Self::RuntimeCall>;

	}

	#[pallet::call]

	impl<T: Config> Pallet<T> {}

	#[pallet::pallet]

	pub struct Pallet<T>(_);

	#[pallet::storage]

	#[pallet::getter(fn parachain_id)]

	pub(super) type ParachainId<T: Config> = StorageValue<_, ParaId, ValueQuery>;

	impl<T: Config> Get<ParaId> for Pallet<T> {

	}

	pub type MessageId = [u8; 32];

	#[pallet::event]

	#[pallet::generate_deposit(pub(super) fn deposit_event)]

	pub enum Event<T: Config> {

		// XCMP

		/// Some XCM was executed OK.

		Success(Option<T::Hash>),

		/// Some XCM failed.

		Fail(Option<T::Hash>, InstructionError),

		/// Bad XCM version used.

		BadVersion(Option<T::Hash>),

		/// Bad XCM format used.

		BadFormat(Option<T::Hash>),

		// DMP

		/// Downward message is invalid XCM.

		InvalidFormat(MessageId),

		/// Downward message is unsupported version of XCM.

		UnsupportedVersion(MessageId),

		/// Downward message executed with the given outcome.

		ExecutedDownward(MessageId, Outcome),

	}

	impl<T: Config> Pallet<T> {

						}

						// As far as the caller is concerned, this was dispatched without error, so

						// we just report the weight used.

						}

					}

				}

			};

	}

	impl<T: Config> XcmpMessageHandler for Pallet<T> {

					}

				}

			}

	}

	impl<T: Config> DmpMessageHandler for Pallet<T> {

				}

			}

	}

}

impl mock_msg_queue::Config for Runtime {

	type XcmExecutor = XcmExecutor<XcmConfig>;

}

// Pallet to cover test cases for change https://github.com/paritytech/cumulus/pull/831

#[frame_support::pallet]

pub mod mock_statemint_prefix {

	use super::*;

	use frame_support::pallet_prelude::*;

	#[pallet::config]

	pub trait Config: frame_system::Config {}

	#[pallet::call]

	impl<T: Config> Pallet<T> {}

	#[pallet::pallet]

	#[pallet::without_storage_info]

	pub struct Pallet<T>(_);

	#[pallet::storage]

	#[pallet::getter(fn current_prefix)]

	pub(super) type CurrentPrefix<T: Config> = StorageValue<_, Location, ValueQuery>;

	impl<T: Config> Get<Location> for Pallet<T> {

	}

	#[pallet::event]

	#[pallet::generate_deposit(pub(super) fn deposit_event)]

	pub enum Event<T: Config> {

		// Changed Prefix

		PrefixChanged(Location),

	}

	impl<T: Config> Pallet<T> {

	}

}

impl mock_statemint_prefix::Config for Runtime {}

type Block = frame_system::mocking::MockBlockU32<Runtime>;

construct_runtime!(

	pub enum Runtime	{

		System: frame_system,

		Balances: pallet_balances,

		PolkadotXcm: pallet_xcm,

		CumulusXcm: cumulus_pallet_xcm,

		MsgQueue: mock_msg_queue,

		Assets: pallet_assets,

		PrefixChanger: mock_statemint_prefix,

	}