// Copyright (C) Moondance Labs Ltd.

// This file is part of Tanssi.

// Tanssi 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.

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

use {

    super::{

        currency::MICROUNIT,

        precompiles::FOREIGN_ASSET_PRECOMPILE_ADDRESS_PREFIX,

        weights::{self, xcm::XcmWeight as XcmGenericWeights},

        AccountId, AllPalletsWithSystem, AssetRate, Balance, Balances, ForeignAssetsCreator,

        MaintenanceMode, MessageQueue, ParachainInfo, ParachainSystem, PolkadotXcm, Runtime,

        RuntimeBlockWeights, RuntimeCall, RuntimeEvent, RuntimeOrigin, TransactionByteFee,

        WeightToFee, XcmpQueue,

    },

    ccp_xcm::SignedToAccountKey20,

    cumulus_primitives_core::{AggregateMessageOrigin, ParaId},

    frame_support::{

        parameter_types,

        traits::{Everything, Nothing, PalletInfoAccess, TransformOrigin},

        weights::Weight,

    },

    frame_system::EnsureRoot,

    pallet_foreign_asset_creator::{

        AssetBalance, AssetId as AssetIdOf, ForeignAssetCreatedHook, ForeignAssetDestroyedHook,

    },

    pallet_xcm::XcmPassthrough,

    pallet_xcm_executor_utils::{

        filters::{IsReserveFilter, IsTeleportFilter},

        DefaultTrustPolicy,

    },

    parachains_common::{

        message_queue::{NarrowOriginToSibling, ParaIdToSibling},

        xcm_config::AssetFeeAsExistentialDepositMultiplier,

    },

    polkadot_runtime_common::xcm_sender::ExponentialPrice,

    sp_core::{ConstU32, H160},

    sp_runtime::Perbill,

    sp_std::vec::Vec,

    xcm::latest::prelude::*,

    xcm_builder::{

        AccountKey20Aliases, AllowKnownQueryResponses, AllowSubscriptionsFrom,

        AllowTopLevelPaidExecutionFrom, ConvertedConcreteId, EnsureXcmOrigin, FungibleAdapter,

        IsConcrete, ParentIsPreset, RelayChainAsNative, SiblingParachainAsNative,

        SiblingParachainConvertsVia, SignedAccountKey20AsNative, SovereignSignedViaLocation,

        TakeWeightCredit, UsingComponents, WeightInfoBounds, WithComputedOrigin,

    },

    xcm_executor::XcmExecutor,

    xcm_primitives::AccountIdAssetIdConversion,

};

parameter_types! {

    // Self Reserve location, defines the multilocation identifiying the self-reserve currency

    // This is used to match it also against our Balances pallet when we receive such

    // a Location: (Self Balances pallet index)

    // We use the RELATIVE multilocation

    pub SelfReserve: Location = Location {

        parents:0,

        interior: [

            PalletInstance(<Balances as PalletInfoAccess>::index() as u8)

        ].into()

    };

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

    pub UnitWeightCost: Weight = Weight::from_parts(1_000_000_000, 64 * 1024);

    // TODO: revisit

    pub const RelayNetwork: NetworkId = NetworkId::Polkadot;

    // The relay chain Origin type

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

    pub const MaxAssetsIntoHolding: u32 = 64;

    /// Maximum number of instructions in a single XCM fragment. A sanity check against

    /// weight caculations getting too crazy.

    pub MaxInstructions: u32 = 100;

    // The universal location within the global consensus system

    pub UniversalLocation: InteriorLocation = [GlobalConsensus(RelayNetwork::get()), Parachain(ParachainInfo::parachain_id().into())].into();

    pub const BaseDeliveryFee: u128 = 100 * MICROUNIT;

}

#[cfg(feature = "runtime-benchmarks")]

parameter_types! {

    pub ReachableDest: Option<Location> = Some(Parent.into());

}

pub type XcmBarrier = (

    // Weight that is paid for may be consumed.

    TakeWeightCredit,

    // Expected responses are OK.

    AllowKnownQueryResponses<PolkadotXcm>,

    WithComputedOrigin<

        (

            // If the message is one that immediately attemps to pay for execution, then allow it.

            AllowTopLevelPaidExecutionFrom<Everything>,

            // Subscriptions for version tracking are OK.

            AllowSubscriptionsFrom<Everything>,

        ),

        UniversalLocation,

        ConstU32<8>,

    >,

);

// For benchmarking, we cannot use the describeFamily

// the benchmark is written to be able to convert an AccountId32, but describeFamily prevents this

#[cfg(not(feature = "runtime-benchmarks"))]

type Descriptor = xcm_builder::DescribeFamily<xcm_builder::DescribeAllTerminal>;

#[cfg(feature = "runtime-benchmarks")]

type Descriptor = xcm_builder::DescribeAllTerminal;

/// 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<polkadot_parachain_primitives::primitives::Sibling, AccountId>,

    // If we receive a Location of type AccountKey20, just generate a native account

    AccountKey20Aliases<RelayNetwork, AccountId>,

    // Generate remote accounts according to polkadot standards

    xcm_builder::HashedDescription<AccountId, Descriptor>,

);

/// Local origins on this chain are allowed to dispatch XCM sends/executions.

pub type LocalOriginToLocation = SignedToAccountKey20<RuntimeOrigin, AccountId, RelayNetwork>;

/// 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<SelfReserve>,

    // 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`.

    (),

>;

/// 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>,

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

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

    SignedAccountKey20AsNative<RelayNetwork, RuntimeOrigin>,

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

    XcmPassthrough<RuntimeOrigin>,

);

/// Means for transacting assets on this chain.

pub type AssetTransactors = (CurrencyTransactor, ForeignFungiblesTransactor);

pub type XcmWeigher =

    WeightInfoBounds<XcmGenericWeights<RuntimeCall>, RuntimeCall, MaxInstructions>;

/// 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, PolkadotXcm, PriceForParentDelivery>,

    // ..and XCMP to communicate with the sibling chains.

    XcmpQueue,

);

pub struct XcmConfig;

impl xcm_executor::Config for XcmConfig {

    type RuntimeCall = RuntimeCall;

    type XcmSender = XcmRouter;

    type AssetTransactor = AssetTransactors;

    type OriginConverter = XcmOriginToTransactDispatchOrigin;

    type IsReserve = IsReserveFilter<Runtime>;

    type IsTeleporter = IsTeleportFilter<Runtime>;

    type UniversalLocation = UniversalLocation;

    type Barrier = XcmBarrier;

    type Weigher = XcmWeigher;

    type Trader = (

        UsingComponents<WeightToFee, SelfReserve, AccountId, Balances, ()>,

        cumulus_primitives_utility::TakeFirstAssetTrader<

            AccountId,

            AssetRateAsMultiplier,

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

            (ConvertedConcreteId<AssetId, Balance, ForeignAssetsCreator, JustTry>,),

            ForeignAssets,

            (),

        >,

    );

    type ResponseHandler = PolkadotXcm;

    type AssetTrap = PolkadotXcm;

    type AssetClaims = PolkadotXcm;

    type SubscriptionService = PolkadotXcm;

    type PalletInstancesInfo = AllPalletsWithSystem;

    type MaxAssetsIntoHolding = MaxAssetsIntoHolding;

    type AssetLocker = ();

    type AssetExchanger = ();

    type FeeManager = ();

    type MessageExporter = ();

    type UniversalAliases = Nothing;

    type CallDispatcher = RuntimeCall;

    type SafeCallFilter = Everything;

    type Aliasers = Nothing;

    type TransactionalProcessor = xcm_builder::FrameTransactionalProcessor;

    type HrmpNewChannelOpenRequestHandler = ();

    type HrmpChannelAcceptedHandler = ();

    type HrmpChannelClosingHandler = ();

    type XcmRecorder = ();

}

impl pallet_xcm::Config for Runtime {

    type RuntimeEvent = RuntimeEvent;

    type SendXcmOrigin = EnsureXcmOrigin<RuntimeOrigin, LocalOriginToLocation>;

    type XcmRouter = XcmRouter;

    type ExecuteXcmOrigin = EnsureXcmOrigin<RuntimeOrigin, LocalOriginToLocation>;

    type XcmExecuteFilter = Everything;

    type XcmExecutor = XcmExecutor<XcmConfig>;

    type XcmTeleportFilter = Nothing;

    type XcmReserveTransferFilter = Everything;

    type Weigher = XcmWeigher;

    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 = ();

    type TrustedLockers = ();

    type SovereignAccountOf = LocationToAccountId;

    type MaxLockers = ConstU32<8>;

    type MaxRemoteLockConsumers = ConstU32<0>;

    type RemoteLockConsumerIdentifier = ();

    // TODO pallet-xcm weights

    type WeightInfo = weights::pallet_xcm::SubstrateWeight<Runtime>;

    type AdminOrigin = EnsureRoot<AccountId>;

}

pub type PriceForSiblingParachainDelivery =

    ExponentialPrice<SelfReserve, BaseDeliveryFee, TransactionByteFee, XcmpQueue>;

pub type PriceForParentDelivery =

    ExponentialPrice<SelfReserve, BaseDeliveryFee, TransactionByteFee, ParachainSystem>;

impl cumulus_pallet_xcmp_queue::Config for Runtime {

    type RuntimeEvent = RuntimeEvent;

    type ChannelInfo = ParachainSystem;

    type VersionWrapper = PolkadotXcm;

    type ControllerOrigin = EnsureRoot<AccountId>;

    type ControllerOriginConverter = XcmOriginToTransactDispatchOrigin;

    type WeightInfo = weights::cumulus_pallet_xcmp_queue::SubstrateWeight<Runtime>;

    type PriceForSiblingDelivery = PriceForSiblingParachainDelivery;

    type XcmpQueue = TransformOrigin<MessageQueue, AggregateMessageOrigin, ParaId, ParaIdToSibling>;

    type MaxInboundSuspended = sp_core::ConstU32<1_000>;

    type MaxActiveOutboundChannels = ConstU32<128>;

    type MaxPageSize = ConstU32<{ 103 * 1024 }>;

}

impl cumulus_pallet_xcm::Config for Runtime {

    type RuntimeEvent = RuntimeEvent;

    type XcmExecutor = XcmExecutor<XcmConfig>;

}

parameter_types! {

    pub MessageQueueServiceWeight: Weight = Perbill::from_percent(25) * RuntimeBlockWeights::get().max_block;

}

impl pallet_message_queue::Config for Runtime {

    type RuntimeEvent = RuntimeEvent;

    type WeightInfo = weights::pallet_message_queue::SubstrateWeight<Self>;

    #[cfg(feature = "runtime-benchmarks")]

    type MessageProcessor = pallet_message_queue::mock_helpers::NoopMessageProcessor<

        cumulus_primitives_core::AggregateMessageOrigin,

    >;

    #[cfg(not(feature = "runtime-benchmarks"))]

    type MessageProcessor =

        xcm_builder::ProcessXcmMessage<AggregateMessageOrigin, XcmExecutor<XcmConfig>, RuntimeCall>;

    type Size = u32;

    // The XCMP queue pallet is only ever able to handle the `Sibling(ParaId)` origin:

    type QueueChangeHandler = NarrowOriginToSibling<XcmpQueue>;

    // NarrowOriginToSibling calls XcmpQueue's is_pause if Origin is sibling. Allows all other origins

    type QueuePausedQuery = (MaintenanceMode, NarrowOriginToSibling<XcmpQueue>);

    // TODO verify values

    type HeapSize = sp_core::ConstU32<{ 64 * 1024 }>;

    type MaxStale = sp_core::ConstU32<8>;

    type ServiceWeight = MessageQueueServiceWeight;

    type IdleMaxServiceWeight = MessageQueueServiceWeight;

}

parameter_types! {

    // we just reuse the same deposits

    pub const ForeignAssetsAssetDeposit: Balance = 0;

    pub const ForeignAssetsAssetAccountDeposit: Balance = 0;

    pub const ForeignAssetsApprovalDeposit: Balance = 0;

    pub const ForeignAssetsAssetsStringLimit: u32 = 50;

    pub const ForeignAssetsMetadataDepositBase: Balance = 0;

    pub const ForeignAssetsMetadataDepositPerByte: Balance = 0;

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

}

#[cfg(feature = "runtime-benchmarks")]

/// Simple conversion of `u32` into an `AssetId` for use in benchmarking.

pub struct ForeignAssetBenchmarkHelper;

#[cfg(feature = "runtime-benchmarks")]

impl pallet_assets::BenchmarkHelper<AssetId> for ForeignAssetBenchmarkHelper {

    fn create_asset_id_parameter(id: u32) -> AssetId {

        id.try_into()

            .expect("number too large to create benchmarks")

    }

}

#[cfg(feature = "runtime-benchmarks")]

impl pallet_asset_rate::AssetKindFactory<AssetId> for ForeignAssetBenchmarkHelper {

    fn create_asset_kind(id: u32) -> AssetId {

        id.try_into()

            .expect("number too large to create benchmarks")

    }

}

// Instruct how to go from an H160 to an AssetID

// We just take the lowest 2 bytes

impl AccountIdAssetIdConversion<AccountId, AssetId> for Runtime {

    /// The way to convert an account to assetId is by ensuring that the prefix is [0xFF, 18]

    /// and by taking the lowest 2 bytes as the assetId

        } else {

        }

    // The opposite conversion

}

pub type AssetId = u16;

pub type ForeignAssetsInstance = pallet_assets::Instance1;

impl pallet_assets::Config<ForeignAssetsInstance> for Runtime {

    type RuntimeEvent = RuntimeEvent;

    type Balance = Balance;

    type AssetId = AssetId;

    type AssetIdParameter = AssetId;

    type Currency = Balances;

    type CreateOrigin = frame_support::traits::NeverEnsureOrigin<AccountId>;

    type ForceOrigin = EnsureRoot<AccountId>;

    type AssetDeposit = ForeignAssetsAssetDeposit;

    type MetadataDepositBase = ForeignAssetsMetadataDepositBase;

    type MetadataDepositPerByte = ForeignAssetsMetadataDepositPerByte;

    type ApprovalDeposit = ForeignAssetsApprovalDeposit;

    type StringLimit = ForeignAssetsAssetsStringLimit;

    type Freezer = ();

    type Extra = ();

    type WeightInfo = weights::pallet_assets::SubstrateWeight<Runtime>;

    type CallbackHandle = ();

    type AssetAccountDeposit = ForeignAssetsAssetAccountDeposit;

    type RemoveItemsLimit = frame_support::traits::ConstU32<1000>;

    #[cfg(feature = "runtime-benchmarks")]

    type BenchmarkHelper = ForeignAssetBenchmarkHelper;

}

pub struct RevertCodePrecompileHook;

impl ForeignAssetCreatedHook<Location, AssetIdOf<Runtime>, AssetBalance<Runtime>>

    for RevertCodePrecompileHook

{

}

impl ForeignAssetDestroyedHook<Location, AssetIdOf<Runtime>> for RevertCodePrecompileHook {

}

impl pallet_foreign_asset_creator::Config for Runtime {

    type RuntimeEvent = RuntimeEvent;

    type ForeignAsset = Location;

    type ForeignAssetCreatorOrigin = EnsureRoot<AccountId>;

    type ForeignAssetModifierOrigin = EnsureRoot<AccountId>;

    type ForeignAssetDestroyerOrigin = EnsureRoot<AccountId>;

    type Fungibles = ForeignAssets;

    type WeightInfo = weights::pallet_foreign_asset_creator::SubstrateWeight<Runtime>;

    type OnForeignAssetCreated = RevertCodePrecompileHook;

    type OnForeignAssetDestroyed = RevertCodePrecompileHook;

}

impl pallet_asset_rate::Config for Runtime {

    type CreateOrigin = EnsureRoot<AccountId>;

    type RemoveOrigin = EnsureRoot<AccountId>;

    type UpdateOrigin = EnsureRoot<AccountId>;

    type Currency = Balances;

    type AssetKind = AssetId;

    type RuntimeEvent = RuntimeEvent;

    type WeightInfo = weights::pallet_asset_rate::SubstrateWeight<Runtime>;

    #[cfg(feature = "runtime-benchmarks")]

    type BenchmarkHelper = ForeignAssetBenchmarkHelper;

}

parameter_types! {

    pub const TrustPolicyMaxAssets: u32 = 1000;

    pub const AllNativeTrustPolicy: DefaultTrustPolicy = DefaultTrustPolicy::AllNative;

    pub const AllNeverTrustPolicy: DefaultTrustPolicy = DefaultTrustPolicy::Never;

}

impl pallet_xcm_executor_utils::Config for Runtime {

    type RuntimeEvent = RuntimeEvent;

    type TrustPolicyMaxAssets = TrustPolicyMaxAssets;

    type ReserveDefaultTrustPolicy = AllNativeTrustPolicy;

    type SetReserveTrustOrigin = EnsureRoot<AccountId>;

    type TeleportDefaultTrustPolicy = AllNeverTrustPolicy;

    type SetTeleportTrustOrigin = EnsureRoot<AccountId>;

    type WeightInfo = weights::pallet_xcm_executor_utils::SubstrateWeight<Runtime>;

}

use {

    crate::ForeignAssets,

    xcm_builder::{FungiblesAdapter, NoChecking},

    xcm_executor::traits::JustTry,

};

/// Means for transacting foreign assets from different global consensus.

pub type ForeignFungiblesTransactor = FungiblesAdapter<

    // Use this fungibles implementation:

    ForeignAssets,

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

    (ConvertedConcreteId<AssetId, Balance, ForeignAssetsCreator, 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 dont need to check teleports here.

    NoChecking,

    // The account to use for tracking teleports.

    CheckingAccount,

>;

/// Multiplier used for dedicated `TakeFirstAssetTrader` with `ForeignAssets` instance.

pub type AssetRateAsMultiplier =

    AssetFeeAsExistentialDepositMultiplier<Runtime, WeightToFee, AssetRate, ForeignAssetsInstance>;

#[test]

    }