git.delta.rocks / unique-network / refs/commits / d83ab4fde4e8

1// Copyright 2019-2022 Unique Network (Gibraltar) Ltd.2// This file is part of Unique Network.34// Unique Network is free software: you can redistribute it and/or modify5// it under the terms of the GNU General Public License as published by6// the Free Software Foundation, either version 3 of the License, or7// (at your option) any later version.89// Unique Network is distributed in the hope that it will be useful,10// but WITHOUT ANY WARRANTY; without even the implied warranty of11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the12// GNU General Public License for more details.1314// You should have received a copy of the GNU General Public License15// along with Unique Network. If not, see <http://www.gnu.org/licenses/>.1617//! # App promotion18//!19//! The app promotion pallet is designed to ... .20//!21//! ## Interface22//!23//! ### Dispatchable Functions24//!25//! * `start_inflation` - This method sets the inflation start date. Can be only called once.26//! Inflation start block can be backdated and will catch up. The method will create Treasury27//!	account if it does not exist and perform the first inflation deposit.2829// #![recursion_limit = "1024"]30#![cfg_attr(not(feature = "std"), no_std)]3132#[cfg(feature = "runtime-benchmarks")]33mod benchmarking;34#[cfg(test)]35mod tests;36pub mod types;37pub mod weights;3839use sp_std::{40	vec::{Vec},41	vec,42	iter::Sum,43	borrow::ToOwned,44	cell::RefCell,45};46use sp_core::H160;47use codec::EncodeLike;48use pallet_balances::BalanceLock;49pub use types::*;5051// use up_common::constants::{DAYS, UNIQUE};52use up_data_structs::CollectionId;5354use frame_support::{55	dispatch::{DispatchResult},56	traits::{57		Currency, Get, LockableCurrency, WithdrawReasons, tokens::Balance, ExistenceRequirement,58	},59	ensure,60};6162use weights::WeightInfo;6364pub use pallet::*;65use pallet_evm::account::CrossAccountId;66use sp_runtime::{67	Perbill,68	traits::{BlockNumberProvider, CheckedAdd, CheckedSub, AccountIdConversion, Zero},69	ArithmeticError,70};7172pub const LOCK_IDENTIFIER: [u8; 8] = *b"appstake";7374const PENDING_LIMIT_PER_BLOCK: u32 = 3;7576type BalanceOf<T> =77	<<T as Config>::Currency as Currency<<T as frame_system::Config>::AccountId>>::Balance;7879#[frame_support::pallet]80pub mod pallet {81	use super::*;82	use frame_support::{83		Blake2_128Concat, Twox64Concat, pallet_prelude::*, storage::Key, PalletId,84		traits::ReservableCurrency,85	};86	use frame_system::pallet_prelude::*;8788	#[pallet::config]89	pub trait Config: frame_system::Config + pallet_evm::account::Config {90		type Currency: ExtendedLockableCurrency<Self::AccountId>91			+ ReservableCurrency<Self::AccountId>;9293		type CollectionHandler: CollectionHandler<94			AccountId = Self::AccountId,95			CollectionId = CollectionId,96		>;9798		type ContractHandler: ContractHandler<AccountId = Self::CrossAccountId, ContractId = H160>;99100		type TreasuryAccountId: Get<Self::AccountId>;101102		/// The app's pallet id, used for deriving its sovereign account ID.103		#[pallet::constant]104		type PalletId: Get<PalletId>;105106		/// In relay blocks.107		#[pallet::constant]108		type RecalculationInterval: Get<Self::BlockNumber>;109		/// In relay blocks.110		#[pallet::constant]111		type PendingInterval: Get<Self::BlockNumber>;112113		// /// In chain blocks.114		// #[pallet::constant]115		// type Day: Get<Self::BlockNumber>; // useless116117		#[pallet::constant]118		type Nominal: Get<BalanceOf<Self>>;119120		#[pallet::constant]121		type IntervalIncome: Get<Perbill>;122123		/// Weight information for extrinsics in this pallet.124		type WeightInfo: WeightInfo;125126		// The relay block number provider127		type RelayBlockNumberProvider: BlockNumberProvider<BlockNumber = Self::BlockNumber>;128129		/// Events compatible with [`frame_system::Config::Event`].130		type Event: IsType<<Self as frame_system::Config>::Event> + From<Event<Self>>;131	}132133	#[pallet::pallet]134	#[pallet::generate_store(pub(super) trait Store)]135	pub struct Pallet<T>(_);136137	#[pallet::event]138	#[pallet::generate_deposit(fn deposit_event)]139	pub enum Event<T: Config> {140		StakingRecalculation(141			/// An recalculated staker142			T::AccountId,143			/// Base on which interest is calculated144			BalanceOf<T>,145			/// Amount of accrued interest146			BalanceOf<T>,147		),148		Stake(T::AccountId, BalanceOf<T>),149		Unstake(T::AccountId, BalanceOf<T>),150		SetAdmin(T::AccountId),151	}152153	#[pallet::error]154	pub enum Error<T> {155		/// Error due to action requiring admin to be set156		AdminNotSet,157		/// No permission to perform an action158		NoPermission,159		/// Insufficient funds to perform an action160		NotSufficientFunds,161		PendingForBlockOverflow,162		/// An error related to the fact that an invalid argument was passed to perform an action163		InvalidArgument,164	}165166	#[pallet::storage]167	pub type TotalStaked<T: Config> = StorageValue<Value = BalanceOf<T>, QueryKind = ValueQuery>;168169	#[pallet::storage]170	pub type Admin<T: Config> = StorageValue<Value = T::AccountId, QueryKind = OptionQuery>;171172	/// Amount of tokens staked by account in the blocknumber.173	#[pallet::storage]174	pub type Staked<T: Config> = StorageNMap<175		Key = (176			Key<Blake2_128Concat, T::AccountId>,177			Key<Twox64Concat, T::BlockNumber>,178		),179		Value = (BalanceOf<T>, T::BlockNumber),180		QueryKind = ValueQuery,181	>;182	/// Amount of stakes for an Account183	#[pallet::storage]184	pub type StakesPerAccount<T: Config> =185		StorageMap<_, Blake2_128Concat, T::AccountId, u8, ValueQuery>;186187	/// Amount of tokens pending unstake per user per block.188	// #[pallet::storage]189	// pub type PendingUnstake<T: Config> = StorageNMap<190	// 	Key = (191	// 		Key<Blake2_128Concat, T::AccountId>,192	// 		Key<Twox64Concat, T::BlockNumber>,193	// 	),194	// 	Value = BalanceOf<T>,195	// 	QueryKind = ValueQuery,196	// >;197	#[pallet::storage]198	pub type PendingUnstake<T: Config> = StorageMap<199		_,200		Twox64Concat,201		T::BlockNumber,202		BoundedVec<(T::AccountId, BalanceOf<T>), ConstU32<PENDING_LIMIT_PER_BLOCK>>,203		ValueQuery,204	>;205206	// /// A block when app-promotion has started .I think this is redundant, because we only need `NextInterestBlock`.207	// #[pallet::storage]208	// pub type StartBlock<T: Config> = StorageValue<Value = T::BlockNumber, QueryKind = ValueQuery>;209210	// /// Next target block when interest is recalculated211	// #[pallet::storage]212	// #[pallet::getter(fn get_interest_block)]213	// pub type NextInterestBlock<T: Config> =214	// 	StorageValue<Value = T::BlockNumber, QueryKind = ValueQuery>;215216	/// Stores hash a record for which the last revenue recalculation was performed.217	/// If `None`, then recalculation has not yet been performed or calculations have been completed for all stakers.218	#[pallet::storage]219	#[pallet::getter(fn get_next_calculated_record)]220	pub type NextCalculatedRecord<T: Config> =221		StorageValue<Value = (T::AccountId, T::BlockNumber), QueryKind = OptionQuery>;222223	#[pallet::hooks]224	impl<T: Config> Hooks<BlockNumberFor<T>> for Pallet<T> {225		fn on_initialize(current_block_number: T::BlockNumber) -> Weight226		where227			<T as frame_system::Config>::BlockNumber: From<u32>,228		{229			let block_pending = PendingUnstake::<T>::take(current_block_number);230			let counter = block_pending.len() as u32;231			// add_weight(0, 1, 0);232233			if !block_pending.is_empty() {234				block_pending.into_iter().for_each(|(staker, amount)| {235					<T::Currency as ReservableCurrency<T::AccountId>>::unreserve(&staker, amount);236				});237			}238239			T::WeightInfo::on_initialize(counter)240		}241	}242243	#[pallet::call]244	impl<T: Config> Pallet<T>245	where246		T::BlockNumber: From<u32> + Into<u32>,247		<<T as Config>::Currency as Currency<T::AccountId>>::Balance: Sum + From<u128>,248	{249		#[pallet::weight(T::WeightInfo::set_admin_address())]250		pub fn set_admin_address(origin: OriginFor<T>, admin: T::CrossAccountId) -> DispatchResult {251			ensure_root(origin)?;252253			<Admin<T>>::set(Some(admin.as_sub().to_owned()));254255			Self::deposit_event(Event::SetAdmin(admin.as_sub().to_owned()));256257			Ok(())258		}259260		#[pallet::weight(T::WeightInfo::stake())]261		pub fn stake(staker: OriginFor<T>, amount: BalanceOf<T>) -> DispatchResult {262			let staker_id = ensure_signed(staker)?;263264			ensure!(265				StakesPerAccount::<T>::get(&staker_id) < 10,266				Error::<T>::NoPermission267			);268269			ensure!(270				amount >= Into::<BalanceOf<T>>::into(100u128) * T::Nominal::get(),271				ArithmeticError::Underflow272			);273274			let balance =275				<<T as Config>::Currency as Currency<T::AccountId>>::free_balance(&staker_id);276277			// ensure!(balance >= amount, ArithmeticError::Underflow);278279			<<T as Config>::Currency as Currency<T::AccountId>>::ensure_can_withdraw(280				&staker_id,281				amount,282				WithdrawReasons::all(),283				balance - amount,284			)?;285286			Self::add_lock_balance(&staker_id, amount)?;287288			let block_number = T::RelayBlockNumberProvider::current_block_number();289290			let recalculate_after_interval: T::BlockNumber =291				if block_number % T::RecalculationInterval::get() == 0u32.into() {292					1u32.into()293				} else {294					2u32.into()295				};296297			let recalc_block = (block_number / T::RecalculationInterval::get()298				+ recalculate_after_interval)299				* T::RecalculationInterval::get();300301			<Staked<T>>::insert((&staker_id, block_number), {302				let mut balance_and_recalc_block = <Staked<T>>::get((&staker_id, block_number));303				balance_and_recalc_block.0 = balance_and_recalc_block304					.0305					.checked_add(&amount)306					.ok_or(ArithmeticError::Overflow)?;307				balance_and_recalc_block.1 = recalc_block;308				balance_and_recalc_block309			});310311			<TotalStaked<T>>::set(312				<TotalStaked<T>>::get()313					.checked_add(&amount)314					.ok_or(ArithmeticError::Overflow)?,315			);316317			StakesPerAccount::<T>::mutate(&staker_id, |stakes| *stakes += 1);318319			Self::deposit_event(Event::Stake(staker_id, amount));320321			Ok(())322		}323324		#[pallet::weight(T::WeightInfo::unstake())]325		pub fn unstake(staker: OriginFor<T>) -> DispatchResultWithPostInfo {326			let staker_id = ensure_signed(staker)?;327			let block = <frame_system::Pallet<T>>::block_number() + T::PendingInterval::get();328			let mut pendings = <PendingUnstake<T>>::get(block);329330			ensure!(!pendings.is_full(), Error::<T>::PendingForBlockOverflow);331332			let mut total_stakes = 0u64;333334			let total_staked: BalanceOf<T> = Staked::<T>::drain_prefix((&staker_id,))335				.map(|(_, (amount, _))| {336					total_stakes += 1;337					amount338				})339				.sum();340341			if total_staked.is_zero() {342				return Ok(None.into()); // TO-DO343			}344345			pendings346				.try_push((staker_id.clone(), total_staked))347				.map_err(|_| Error::<T>::PendingForBlockOverflow)?;348349			<PendingUnstake<T>>::insert(block, pendings);350351			Self::unlock_balance_unchecked(&staker_id, total_staked);352353			<T::Currency as ReservableCurrency<T::AccountId>>::reserve(&staker_id, total_staked)?;354355			TotalStaked::<T>::set(356				TotalStaked::<T>::get()357					.checked_sub(&total_staked)358					.ok_or(ArithmeticError::Underflow)?,359			);360361			StakesPerAccount::<T>::remove(&staker_id);362363			Self::deposit_event(Event::Unstake(staker_id, total_staked));364365			Ok(None.into())366		}367368		#[pallet::weight(T::WeightInfo::sponsor_collection())]369		pub fn sponsor_collection(370			admin: OriginFor<T>,371			collection_id: CollectionId,372		) -> DispatchResult {373			let admin_id = ensure_signed(admin)?;374			ensure!(375				admin_id == Admin::<T>::get().ok_or(Error::<T>::AdminNotSet)?,376				Error::<T>::NoPermission377			);378379			T::CollectionHandler::set_sponsor(Self::account_id(), collection_id)380		}381		#[pallet::weight(T::WeightInfo::stop_sponsoring_collection())]382		pub fn stop_sponsoring_collection(383			admin: OriginFor<T>,384			collection_id: CollectionId,385		) -> DispatchResult {386			let admin_id = ensure_signed(admin)?;387388			ensure!(389				admin_id == Admin::<T>::get().ok_or(Error::<T>::AdminNotSet)?,390				Error::<T>::NoPermission391			);392393			ensure!(394				T::CollectionHandler::sponsor(collection_id)?.ok_or(<Error<T>>::InvalidArgument)?395					== Self::account_id(),396				<Error<T>>::NoPermission397			);398			T::CollectionHandler::remove_collection_sponsor(collection_id)399		}400401		#[pallet::weight(T::WeightInfo::sponsor_contract())]402		pub fn sponsor_contract(admin: OriginFor<T>, contract_id: H160) -> DispatchResult {403			let admin_id = ensure_signed(admin)?;404405			ensure!(406				admin_id == Admin::<T>::get().ok_or(Error::<T>::AdminNotSet)?,407				Error::<T>::NoPermission408			);409410			T::ContractHandler::set_sponsor(411				T::CrossAccountId::from_sub(Self::account_id()),412				contract_id,413			)414		}415416		#[pallet::weight(T::WeightInfo::stop_sponsoring_contract())]417		pub fn stop_sponsoring_contract(admin: OriginFor<T>, contract_id: H160) -> DispatchResult {418			let admin_id = ensure_signed(admin)?;419420			ensure!(421				admin_id == Admin::<T>::get().ok_or(Error::<T>::AdminNotSet)?,422				Error::<T>::NoPermission423			);424425			ensure!(426				T::ContractHandler::sponsor(contract_id)?.ok_or(<Error<T>>::InvalidArgument)?427					== T::CrossAccountId::from_sub(Self::account_id()),428				<Error<T>>::NoPermission429			);430			T::ContractHandler::remove_contract_sponsor(contract_id)431		}432433		#[pallet::weight(T::WeightInfo::payout_stakers(stakers_number.unwrap_or(20) as u32))]434		pub fn payout_stakers(admin: OriginFor<T>, stakers_number: Option<u8>) -> DispatchResult {435			let admin_id = ensure_signed(admin)?;436437			ensure!(438				admin_id == Admin::<T>::get().ok_or(Error::<T>::AdminNotSet)?,439				Error::<T>::NoPermission440			);441442			let current_recalc_block =443				Self::get_current_recalc_block(T::RelayBlockNumberProvider::current_block_number());444			let next_recalc_block = current_recalc_block + T::RecalculationInterval::get();445446			let mut storage_iterator = Self::get_next_calculated_key()447				.map_or(Staked::<T>::iter(), |key| Staked::<T>::iter_from(key));448449			NextCalculatedRecord::<T>::set(None);450451			// {452			// 	let mut stakers_number = stakers_number.unwrap_or(20);453			// 	let mut last_id = admin_id;454			// 	let mut income_acc = BalanceOf::<T>::default();455			// 	let mut amount_acc = BalanceOf::<T>::default();456457			// 	while let Some((458			// 		(current_id, staked_block),459			// 		(amount, next_recalc_block_for_stake),460			// 	)) = storage_iterator.next()461			// 	{462			// 		if last_id != current_id {463			// 			if income_acc != BalanceOf::<T>::default() {464			// 				<T::Currency as Currency<T::AccountId>>::transfer(465			// 					&T::TreasuryAccountId::get(),466			// 					&last_id,467			// 					income_acc,468			// 					ExistenceRequirement::KeepAlive,469			// 				)470			// 				.and_then(|_| Self::add_lock_balance(&last_id, income_acc))?;471472			// 				Self::deposit_event(Event::StakingRecalculation(473			// 					last_id, amount, income_acc,474			// 				));475			// 			}476477			// 			if stakers_number == 0 {478			// 				NextCalculatedRecord::<T>::set(Some((current_id, staked_block)));479			// 				break;480			// 			}481			// 			stakers_number -= 1;482			// 			income_acc = BalanceOf::<T>::default();483			// 			last_id = current_id;484			// 		};485			// 		if current_recalc_block >= next_recalc_block_for_stake {486			// 			Self::recalculate_and_insert_stake(487			// 				&last_id,488			// 				staked_block,489			// 				next_recalc_block,490			// 				amount,491			// 				((current_recalc_block - next_recalc_block_for_stake)492			// 					/ T::RecalculationInterval::get())493			// 				.into() + 1,494			// 				&mut income_acc,495			// 			);496			// 		}497			// 	}498			// }499500			// {501			// 	let mut stakers_number = stakers_number.unwrap_or(20);502			// 	let last_id = RefCell::new(None);503			// 	let income_acc = RefCell::new(BalanceOf::<T>::default());504			// 	let amount_acc = RefCell::new(BalanceOf::<T>::default());505506			// 	let flush_stake = || -> DispatchResult {507			// 		if let Some(last_id) = &*last_id.borrow() {508			// 			if !income_acc.borrow().is_zero() {509			// 				<T::Currency as Currency<T::AccountId>>::transfer(510			// 					&T::TreasuryAccountId::get(),511			// 					last_id,512			// 					*income_acc.borrow(),513			// 					ExistenceRequirement::KeepAlive,514			// 				)515			// 				.and_then(|_| {516			// 					Self::add_lock_balance(last_id, *income_acc.borrow());517			// 					<TotalStaked<T>>::try_mutate(|staked| {518			// 						staked519			// 							.checked_add(&*income_acc.borrow())520			// 							.ok_or(ArithmeticError::Overflow.into())521			// 					})522			// 				})?;523524			// 				Self::deposit_event(Event::StakingRecalculation(525			// 					last_id.clone(),526			// 					*amount_acc.borrow(),527			// 					*income_acc.borrow(),528			// 				));529			// 			}530531			// 			*income_acc.borrow_mut() = BalanceOf::<T>::default();532			// 			*amount_acc.borrow_mut() = BalanceOf::<T>::default();533			// 		}534			// 		Ok(())535			// 	};536537			// 	while let Some((538			// 		(current_id, staked_block),539			// 		(amount, next_recalc_block_for_stake),540			// 	)) = storage_iterator.next()541			// 	{542			// 		if stakers_number == 0 {543			// 			NextCalculatedRecord::<T>::set(Some((current_id, staked_block)));544			// 			break;545			// 		}546			// 		stakers_number -= 1;547			// 		if last_id.borrow().as_ref() != Some(&current_id) {548			// 			flush_stake()?;549			// 		};550			// 		*last_id.borrow_mut() = Some(current_id.clone());551			// 		if current_recalc_block >= next_recalc_block_for_stake {552			// 			*amount_acc.borrow_mut() += amount;553			// 			Self::recalculate_and_insert_stake(554			// 				&current_id,555			// 				staked_block,556			// 				next_recalc_block,557			// 				amount,558			// 				((current_recalc_block - next_recalc_block_for_stake)559			// 					/ T::RecalculationInterval::get())560			// 				.into() + 1,561			// 				&mut *income_acc.borrow_mut(),562			// 			);563			// 		}564			// 	}565			// 	flush_stake()?;566			// }567568			{569				let mut stakers_number = stakers_number.unwrap_or(20);570				let last_id = RefCell::new(None);571				let income_acc = RefCell::new(BalanceOf::<T>::default());572				let amount_acc = RefCell::new(BalanceOf::<T>::default());573574				let flush_stake = || -> DispatchResult {575					if let Some(last_id) = &*last_id.borrow() {576						if !income_acc.borrow().is_zero() {577							<T::Currency as Currency<T::AccountId>>::transfer(578								&T::TreasuryAccountId::get(),579								last_id,580								*income_acc.borrow(),581								ExistenceRequirement::KeepAlive,582							)583							.and_then(|_| {584								Self::add_lock_balance(last_id, *income_acc.borrow())?;585								<TotalStaked<T>>::try_mutate(|staked| {586									staked587										.checked_add(&*income_acc.borrow())588										.ok_or(ArithmeticError::Overflow.into())589								})590							})?;591592							Self::deposit_event(Event::StakingRecalculation(593								last_id.clone(),594								*amount_acc.borrow(),595								*income_acc.borrow(),596							));597						}598599						*income_acc.borrow_mut() = BalanceOf::<T>::default();600						*amount_acc.borrow_mut() = BalanceOf::<T>::default();601					}602					Ok(())603				};604605				while let Some((606					(current_id, staked_block),607					(amount, next_recalc_block_for_stake),608				)) = storage_iterator.next()609				{610					if stakers_number == 0 {611						NextCalculatedRecord::<T>::set(Some((current_id, staked_block)));612						break;613					}614					if last_id.borrow().as_ref() != Some(&current_id) {615						flush_stake()?;616						*last_id.borrow_mut() = Some(current_id.clone());617						stakers_number -= 1;618					};619					if current_recalc_block >= next_recalc_block_for_stake {620						*amount_acc.borrow_mut() += amount;621						Self::recalculate_and_insert_stake(622							&current_id,623							staked_block,624							next_recalc_block,625							amount,626							((current_recalc_block - next_recalc_block_for_stake)627								/ T::RecalculationInterval::get())628							.into() + 1,629							&mut *income_acc.borrow_mut(),630						);631					}632				}633				flush_stake()?;634			}635636			Ok(())637		}638	}639}640641impl<T: Config> Pallet<T> {642	pub fn account_id() -> T::AccountId {643		T::PalletId::get().into_account_truncating()644	}645646	fn unlock_balance_unchecked(staker: &T::AccountId, amount: BalanceOf<T>) {647		let mut locked_balance = Self::get_locked_balance(staker).map(|l| l.amount).unwrap();648		locked_balance -= amount;649		Self::set_lock_unchecked(staker, locked_balance);650	}651652	fn add_lock_balance(staker: &T::AccountId, amount: BalanceOf<T>) -> DispatchResult {653		Self::get_locked_balance(staker)654			.map_or(<BalanceOf<T>>::default(), |l| l.amount)655			.checked_add(&amount)656			.map(|new_lock| Self::set_lock_unchecked(staker, new_lock))657			.ok_or(ArithmeticError::Overflow.into())658	}659660	fn set_lock_unchecked(staker: &T::AccountId, amount: BalanceOf<T>) {661		if amount.is_zero() {662			<T::Currency as LockableCurrency<T::AccountId>>::remove_lock(LOCK_IDENTIFIER, &staker);663		} else {664			<T::Currency as LockableCurrency<T::AccountId>>::set_lock(665				LOCK_IDENTIFIER,666				staker,667				amount,668				WithdrawReasons::all(),669			)670		}671	}672673	pub fn get_locked_balance(674		staker: impl EncodeLike<T::AccountId>,675	) -> Option<BalanceLock<BalanceOf<T>>> {676		<T::Currency as ExtendedLockableCurrency<T::AccountId>>::locks(staker)677			.into_iter()678			.find(|l| l.id == LOCK_IDENTIFIER)679	}680681	pub fn total_staked_by_id(staker: impl EncodeLike<T::AccountId>) -> Option<BalanceOf<T>> {682		let staked = Staked::<T>::iter_prefix((staker,))683			.into_iter()684			.fold(<BalanceOf<T>>::default(), |acc, (_, (amount, _))| {685				acc + amount686			});687		if staked != <BalanceOf<T>>::default() {688			Some(staked)689		} else {690			None691		}692	}693694	pub fn total_staked_by_id_per_block(695		staker: impl EncodeLike<T::AccountId>,696	) -> Option<Vec<(T::BlockNumber, BalanceOf<T>)>> {697		let mut staked = Staked::<T>::iter_prefix((staker,))698			.into_iter()699			.map(|(block, (amount, _))| (block, amount))700			.collect::<Vec<_>>();701		staked.sort_by_key(|(block, _)| *block);702		if !staked.is_empty() {703			Some(staked)704		} else {705			None706		}707	}708709	pub fn cross_id_total_staked(staker: Option<T::CrossAccountId>) -> Option<BalanceOf<T>> {710		staker.map_or(Some(<TotalStaked<T>>::get()), |s| {711			Self::total_staked_by_id(s.as_sub())712		})713		// Self::total_staked_by_id(staker.as_sub())714	}715716	pub fn cross_id_locked_balance(staker: T::CrossAccountId) -> BalanceOf<T> {717		Self::get_locked_balance(staker.as_sub())718			.map(|l| l.amount)719			.unwrap_or_default()720	}721722	pub fn cross_id_total_staked_per_block(723		staker: T::CrossAccountId,724	) -> Vec<(T::BlockNumber, BalanceOf<T>)> {725		Self::total_staked_by_id_per_block(staker.as_sub()).unwrap_or_default()726	}727728	fn recalculate_and_insert_stake(729		staker: &T::AccountId,730		staked_block: T::BlockNumber,731		next_recalc_block: T::BlockNumber,732		base: BalanceOf<T>,733		iters: u32,734		income_acc: &mut BalanceOf<T>,735	) {736		let income = Self::calculate_income(base, iters);737738		base.checked_add(&income).map(|res| {739			<Staked<T>>::insert((staker, staked_block), (res, next_recalc_block));740			*income_acc += income;741		});742	}743744	fn calculate_income<I>(base: I, iters: u32) -> I745	where746		I: EncodeLike<BalanceOf<T>> + Balance,747	{748		let mut income = base;749750		(0..iters).for_each(|_| income += T::IntervalIncome::get() * income);751752		income - base753	}754755	fn get_current_recalc_block(current_relay_block: T::BlockNumber) -> T::BlockNumber {756		(current_relay_block / T::RecalculationInterval::get()) * T::RecalculationInterval::get()757	}758759	// fn get_next_recalc_block(current_relay_block: T::BlockNumber) -> T::BlockNumber {760	// 	Self::get_current_recalc_block(current_relay_block) + T::RecalculationInterval::get()761	// }762763	fn get_next_calculated_key() -> Option<Vec<u8>> {764		Self::get_next_calculated_record().map(|key| Staked::<T>::hashed_key_for(key))765	}766}767768impl<T: Config> Pallet<T>769where770	<<T as Config>::Currency as Currency<T::AccountId>>::Balance: Sum,771{772	pub fn cross_id_pending_unstake(staker: Option<T::CrossAccountId>) -> BalanceOf<T> {773		staker.map_or(774			PendingUnstake::<T>::iter_values()775				.flat_map(|pendings| pendings.into_iter().map(|(_, amount)| amount))776				.sum(),777			|s| {778				PendingUnstake::<T>::iter_values()779					.flatten()780					.filter_map(|(id, amount)| {781						if id == *s.as_sub() {782							Some(amount)783						} else {784							None785						}786					})787					.sum()788			},789		)790	}791792	pub fn cross_id_pending_unstake_per_block(793		staker: T::CrossAccountId,794	) -> Vec<(T::BlockNumber, BalanceOf<T>)> {795		let mut unsorted_res = vec![];796		PendingUnstake::<T>::iter().for_each(|(block, pendings)| {797			pendings.into_iter().for_each(|(id, amount)| {798				if id == *staker.as_sub() {799					unsorted_res.push((block, amount));800				};801			})802		});803804		unsorted_res.sort_by_key(|(block, _)| *block);805		unsorted_res806	}807}