git.delta.rocks / unique-network / refs/commits / 7cf62e7cc906

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#![cfg_attr(not(feature = "std"), no_std)]1819use frame_support::{ensure, BoundedVec};20use up_data_structs::{21	AccessMode, CollectionId, CustomDataLimit, MAX_REFUNGIBLE_PIECES, TokenId,22	CreateCollectionData, CreateRefungibleExData, mapping::TokenAddressMapping, budget::Budget,23};24use pallet_evm::account::CrossAccountId;25use pallet_common::{26	Error as CommonError, Event as CommonEvent, Pallet as PalletCommon,27};28use pallet_structure::Pallet as PalletStructure;29use sp_runtime::{ArithmeticError, DispatchError, DispatchResult};30use sp_std::{vec::Vec, vec, collections::btree_map::BTreeMap};31use core::ops::Deref;32use codec::{Encode, Decode, MaxEncodedLen};33use scale_info::TypeInfo;3435pub use pallet::*;36#[cfg(feature = "runtime-benchmarks")]37pub mod benchmarking;38pub mod common;39pub mod erc;40pub mod weights;41pub(crate) type SelfWeightOf<T> = <T as Config>::WeightInfo;4243#[struct_versioning::versioned(version = 2, upper)]44#[derive(Encode, Decode, Default, TypeInfo, MaxEncodedLen)]45pub struct ItemData {46	pub const_data: BoundedVec<u8, CustomDataLimit>,4748	#[version(..2)]49	pub variable_data: BoundedVec<u8, CustomDataLimit>,50}5152#[frame_support::pallet]53pub mod pallet {54	use super::*;55	use frame_support::{56		Blake2_128, Blake2_128Concat, Twox64Concat, pallet_prelude::*, storage::Key,57		traits::StorageVersion,58	};59	use frame_system::pallet_prelude::*;60	use up_data_structs::{CollectionId, TokenId};61	use super::weights::WeightInfo;6263	#[pallet::error]64	pub enum Error<T> {65		/// Not Refungible item data used to mint in Refungible collection.66		NotRefungibleDataUsedToMintFungibleCollectionToken,67		/// Maximum refungibility exceeded68		WrongRefungiblePieces,69		/// Refungible token can't nest other tokens70		RefungibleDisallowsNesting,71		/// Setting item properties is not allowed72		SettingPropertiesNotAllowed,73	}7475	#[pallet::config]76	pub trait Config:77		frame_system::Config + pallet_common::Config + pallet_structure::Config78	{79		type WeightInfo: WeightInfo;80	}8182	const STORAGE_VERSION: StorageVersion = StorageVersion::new(1);8384	#[pallet::pallet]85	#[pallet::storage_version(STORAGE_VERSION)]86	#[pallet::generate_store(pub(super) trait Store)]87	pub struct Pallet<T>(_);8889	#[pallet::storage]90	pub type TokensMinted<T: Config> =91		StorageMap<Hasher = Twox64Concat, Key = CollectionId, Value = u32, QueryKind = ValueQuery>;92	#[pallet::storage]93	pub type TokensBurnt<T: Config> =94		StorageMap<Hasher = Twox64Concat, Key = CollectionId, Value = u32, QueryKind = ValueQuery>;9596	#[pallet::storage]97	pub type TokenData<T: Config> = StorageNMap<98		Key = (Key<Twox64Concat, CollectionId>, Key<Twox64Concat, TokenId>),99		Value = ItemData,100		QueryKind = ValueQuery,101	>;102103	#[pallet::storage]104	pub type TotalSupply<T: Config> = StorageNMap<105		Key = (Key<Twox64Concat, CollectionId>, Key<Twox64Concat, TokenId>),106		Value = u128,107		QueryKind = ValueQuery,108	>;109110	/// Used to enumerate tokens owned by account111	#[pallet::storage]112	pub type Owned<T: Config> = StorageNMap<113		Key = (114			Key<Twox64Concat, CollectionId>,115			Key<Blake2_128Concat, T::CrossAccountId>,116			Key<Twox64Concat, TokenId>,117		),118		Value = bool,119		QueryKind = ValueQuery,120	>;121122	#[pallet::storage]123	pub type AccountBalance<T: Config> = StorageNMap<124		Key = (125			Key<Twox64Concat, CollectionId>,126			// Owner127			Key<Blake2_128Concat, T::CrossAccountId>,128		),129		Value = u32,130		QueryKind = ValueQuery,131	>;132133	#[pallet::storage]134	pub type Balance<T: Config> = StorageNMap<135		Key = (136			Key<Twox64Concat, CollectionId>,137			Key<Twox64Concat, TokenId>,138			// Owner139			Key<Blake2_128Concat, T::CrossAccountId>,140		),141		Value = u128,142		QueryKind = ValueQuery,143	>;144145	#[pallet::storage]146	pub type Allowance<T: Config> = StorageNMap<147		Key = (148			Key<Twox64Concat, CollectionId>,149			Key<Twox64Concat, TokenId>,150			// Owner151			Key<Blake2_128, T::CrossAccountId>,152			// Spender153			Key<Blake2_128Concat, T::CrossAccountId>,154		),155		Value = u128,156		QueryKind = ValueQuery,157	>;158159	#[pallet::hooks]160	impl<T: Config> Hooks<BlockNumberFor<T>> for Pallet<T> {161		fn on_runtime_upgrade() -> Weight {162			if StorageVersion::get::<Pallet<T>>() < StorageVersion::new(1) {163				<TokenData<T>>::translate_values::<ItemDataVersion1, _>(|v| {164					Some(<ItemDataVersion2>::from(v))165				})166			}167168			0169		}170	}171}172173pub struct RefungibleHandle<T: Config>(pallet_common::CollectionHandle<T>);174impl<T: Config> RefungibleHandle<T> {175	pub fn cast(inner: pallet_common::CollectionHandle<T>) -> Self {176		Self(inner)177	}178	pub fn into_inner(self) -> pallet_common::CollectionHandle<T> {179		self.0180	}181}182impl<T: Config> Deref for RefungibleHandle<T> {183	type Target = pallet_common::CollectionHandle<T>;184185	fn deref(&self) -> &Self::Target {186		&self.0187	}188}189190impl<T: Config> Pallet<T> {191	pub fn total_supply(collection: &RefungibleHandle<T>) -> u32 {192		<TokensMinted<T>>::get(collection.id) - <TokensBurnt<T>>::get(collection.id)193	}194	pub fn token_exists(collection: &RefungibleHandle<T>, token: TokenId) -> bool {195		<TotalSupply<T>>::contains_key((collection.id, token))196	}197}198199// unchecked calls skips any permission checks200impl<T: Config> Pallet<T> {201	pub fn init_collection(202		owner: T::AccountId,203		data: CreateCollectionData<T::AccountId>,204	) -> Result<CollectionId, DispatchError> {205		<PalletCommon<T>>::init_collection(owner, data)206	}207	pub fn destroy_collection(208		collection: RefungibleHandle<T>,209		sender: &T::CrossAccountId,210	) -> DispatchResult {211		let id = collection.id;212213		if Self::collection_has_tokens(id) {214			return Err(<CommonError<T>>::CantDestroyNotEmptyCollection.into());215		}216217		// =========218219		PalletCommon::destroy_collection(collection.0, sender)?;220221		<TokensMinted<T>>::remove(id);222		<TokensBurnt<T>>::remove(id);223		<TokenData<T>>::remove_prefix((id,), None);224		<TotalSupply<T>>::remove_prefix((id,), None);225		<Balance<T>>::remove_prefix((id,), None);226		<Allowance<T>>::remove_prefix((id,), None);227		<Owned<T>>::remove_prefix((id,), None);228		<AccountBalance<T>>::remove_prefix((id,), None);229		Ok(())230	}231232	fn collection_has_tokens(collection_id: CollectionId) -> bool {233		<TokenData<T>>::iter_prefix((collection_id,)).next().is_some()234	}235236	pub fn burn_token(collection: &RefungibleHandle<T>, token_id: TokenId) -> DispatchResult {237		let burnt = <TokensBurnt<T>>::get(collection.id)238			.checked_add(1)239			.ok_or(ArithmeticError::Overflow)?;240241		<TokensBurnt<T>>::insert(collection.id, burnt);242		<TokenData<T>>::remove((collection.id, token_id));243		<TotalSupply<T>>::remove((collection.id, token_id));244		<Balance<T>>::remove_prefix((collection.id, token_id), None);245		<Allowance<T>>::remove_prefix((collection.id, token_id), None);246		// TODO: ERC721 transfer event247		Ok(())248	}249250	pub fn burn(251		collection: &RefungibleHandle<T>,252		owner: &T::CrossAccountId,253		token: TokenId,254		amount: u128,255	) -> DispatchResult {256		let total_supply = <TotalSupply<T>>::get((collection.id, token))257			.checked_sub(amount)258			.ok_or(<CommonError<T>>::TokenValueTooLow)?;259260		// This was probally last owner of this token?261		if total_supply == 0 {262			// Ensure user actually owns this amount263			ensure!(264				<Balance<T>>::get((collection.id, token, owner)) == amount,265				<CommonError<T>>::TokenValueTooLow266			);267			let account_balance = <AccountBalance<T>>::get((collection.id, owner))268				.checked_sub(1)269				// Should not occur270				.ok_or(ArithmeticError::Underflow)?;271272			// =========273274			<Owned<T>>::remove((collection.id, owner, token));275			<PalletStructure<T>>::unnest_if_nested(owner, collection.id, token);276			<AccountBalance<T>>::insert((collection.id, owner), account_balance);277			Self::burn_token(collection, token)?;278			<PalletCommon<T>>::deposit_event(CommonEvent::ItemDestroyed(279				collection.id,280				token,281				owner.clone(),282				amount,283			));284			return Ok(());285		}286287		let balance = <Balance<T>>::get((collection.id, token, owner))288			.checked_sub(amount)289			.ok_or(<CommonError<T>>::TokenValueTooLow)?;290		let account_balance = if balance == 0 {291			<AccountBalance<T>>::get((collection.id, owner))292				.checked_sub(1)293				// Should not occur294				.ok_or(ArithmeticError::Underflow)?295		} else {296			0297		};298299		// =========300301		if balance == 0 {302			<Owned<T>>::remove((collection.id, owner, token));303			<PalletStructure<T>>::unnest_if_nested(owner, collection.id, token);304			<Balance<T>>::remove((collection.id, token, owner));305			<AccountBalance<T>>::insert((collection.id, owner), account_balance);306		} else {307			<Balance<T>>::insert((collection.id, token, owner), balance);308		}309		<TotalSupply<T>>::insert((collection.id, token), total_supply);310		// TODO: ERC20 transfer event311		<PalletCommon<T>>::deposit_event(CommonEvent::ItemDestroyed(312			collection.id,313			token,314			owner.clone(),315			amount,316		));317		Ok(())318	}319320	pub fn transfer(321		collection: &RefungibleHandle<T>,322		from: &T::CrossAccountId,323		to: &T::CrossAccountId,324		token: TokenId,325		amount: u128,326		nesting_budget: &dyn Budget,327	) -> DispatchResult {328		ensure!(329			collection.limits.transfers_enabled(),330			<CommonError<T>>::TransferNotAllowed331		);332333		if collection.permissions.access() == AccessMode::AllowList {334			collection.check_allowlist(from)?;335			collection.check_allowlist(to)?;336		}337		<PalletCommon<T>>::ensure_correct_receiver(to)?;338339		let balance_from = <Balance<T>>::get((collection.id, token, from))340			.checked_sub(amount)341			.ok_or(<CommonError<T>>::TokenValueTooLow)?;342		let mut create_target = false;343		let from_to_differ = from != to;344		let balance_to = if from != to {345			let old_balance = <Balance<T>>::get((collection.id, token, to));346			if old_balance == 0 {347				create_target = true;348			}349			Some(350				old_balance351					.checked_add(amount)352					.ok_or(ArithmeticError::Overflow)?,353			)354		} else {355			None356		};357358		let account_balance_from = if balance_from == 0 {359			Some(360				<AccountBalance<T>>::get((collection.id, from))361					.checked_sub(1)362					// Should not occur363					.ok_or(ArithmeticError::Underflow)?,364			)365		} else {366			None367		};368		// Account data is created in token, AccountBalance should be increased369		// But only if from != to as we shouldn't check overflow in this case370		let account_balance_to = if create_target && from_to_differ {371			let account_balance_to = <AccountBalance<T>>::get((collection.id, to))372				.checked_add(1)373				.ok_or(ArithmeticError::Overflow)?;374			ensure!(375				account_balance_to < collection.limits.account_token_ownership_limit(),376				<CommonError<T>>::AccountTokenLimitExceeded,377			);378379			Some(account_balance_to)380		} else {381			None382		};383384		// =========385386		<PalletStructure<T>>::nest_if_sent_to_token(387			from.clone(),388			to,389			collection.id,390			token,391			nesting_budget392		)?;393394		if let Some(balance_to) = balance_to {395			// from != to396			if balance_from == 0 {397				<Balance<T>>::remove((collection.id, token, from));398				<PalletStructure<T>>::unnest_if_nested(399					from,400					collection.id,401					token402				);403			} else {404				<Balance<T>>::insert((collection.id, token, from), balance_from);405			}406			<Balance<T>>::insert((collection.id, token, to), balance_to);407			if let Some(account_balance_from) = account_balance_from {408				<AccountBalance<T>>::insert((collection.id, from), account_balance_from);409				<Owned<T>>::remove((collection.id, from, token));410			}411			if let Some(account_balance_to) = account_balance_to {412				<AccountBalance<T>>::insert((collection.id, to), account_balance_to);413				<Owned<T>>::insert((collection.id, to, token), true);414			}415		}416417		// TODO: ERC20 transfer event418		<PalletCommon<T>>::deposit_event(CommonEvent::Transfer(419			collection.id,420			token,421			from.clone(),422			to.clone(),423			amount,424		));425		Ok(())426	}427428	pub fn create_multiple_items(429		collection: &RefungibleHandle<T>,430		sender: &T::CrossAccountId,431		data: Vec<CreateRefungibleExData<T::CrossAccountId>>,432		nesting_budget: &dyn Budget,433	) -> DispatchResult {434		if !collection.is_owner_or_admin(sender) {435			ensure!(436				collection.permissions.mint_mode(),437				<CommonError<T>>::PublicMintingNotAllowed438			);439			collection.check_allowlist(sender)?;440441			for item in data.iter() {442				for user in item.users.keys() {443					collection.check_allowlist(user)?;444				}445			}446		}447448		for item in data.iter() {449			for (owner, _) in item.users.iter() {450				<PalletCommon<T>>::ensure_correct_receiver(owner)?;451			}452		}453454		// Total pieces per tokens455		let totals = data456			.iter()457			.map(|data| {458				Ok(data459					.users460					.iter()461					.map(|u| u.1)462					.try_fold(0u128, |acc, v| acc.checked_add(*v))463					.ok_or(ArithmeticError::Overflow)?)464			})465			.collect::<Result<Vec<_>, DispatchError>>()?;466		for total in &totals {467			ensure!(468				*total <= MAX_REFUNGIBLE_PIECES,469				<Error<T>>::WrongRefungiblePieces470			);471		}472473		let first_token_id = <TokensMinted<T>>::get(collection.id);474		let tokens_minted = first_token_id475			.checked_add(data.len() as u32)476			.ok_or(ArithmeticError::Overflow)?;477		ensure!(478			tokens_minted < collection.limits.token_limit(),479			<CommonError<T>>::CollectionTokenLimitExceeded480		);481482		let mut balances = BTreeMap::new();483		for data in &data {484			for owner in data.users.keys() {485				let balance = balances486					.entry(owner)487					.or_insert_with(|| <AccountBalance<T>>::get((collection.id, owner)));488				*balance = balance.checked_add(1).ok_or(ArithmeticError::Overflow)?;489490				ensure!(491					*balance <= collection.limits.account_token_ownership_limit(),492					<CommonError<T>>::AccountTokenLimitExceeded,493				);494			}495		}496497		for (i, token) in data.iter().enumerate() {498			let token_id = TokenId(first_token_id + i as u32 + 1);499			for (to, _) in token.users.iter() {500501				<PalletStructure<T>>::check_nesting(502					sender.clone(),503					to,504					collection.id,505					token_id,506					nesting_budget,507				)?;508			}509		}510511		// =========512513		<TokensMinted<T>>::insert(collection.id, tokens_minted);514		for (account, balance) in balances {515			<AccountBalance<T>>::insert((collection.id, account), balance);516		}517		for (i, token) in data.into_iter().enumerate() {518			let token_id = first_token_id + i as u32 + 1;519			<TotalSupply<T>>::insert((collection.id, token_id), totals[i]);520521			<TokenData<T>>::insert(522				(collection.id, token_id),523				ItemData {524					const_data: token.const_data,525				},526			);527528			for (user, amount) in token.users.into_iter() {529				if amount == 0 {530					continue;531				}532				<Balance<T>>::insert((collection.id, token_id, &user), amount);533				<Owned<T>>::insert((collection.id, &user, TokenId(token_id)), true);534				<PalletStructure<T>>::nest_if_sent_to_token_unchecked(&user, collection.id, TokenId(token_id));535536				// TODO: ERC20 transfer event537				<PalletCommon<T>>::deposit_event(CommonEvent::ItemCreated(538					collection.id,539					TokenId(token_id),540					user,541					amount,542				));543			}544		}545		Ok(())546	}547548	pub fn set_allowance_unchecked(549		collection: &RefungibleHandle<T>,550		sender: &T::CrossAccountId,551		spender: &T::CrossAccountId,552		token: TokenId,553		amount: u128,554	) {555		if amount == 0 {556			<Allowance<T>>::remove((collection.id, token, sender, spender));557		} else {558			<Allowance<T>>::insert((collection.id, token, sender, spender), amount);559		}560		// TODO: ERC20 approval event561		<PalletCommon<T>>::deposit_event(CommonEvent::Approved(562			collection.id,563			token,564			sender.clone(),565			spender.clone(),566			amount,567		))568	}569570	pub fn set_allowance(571		collection: &RefungibleHandle<T>,572		sender: &T::CrossAccountId,573		spender: &T::CrossAccountId,574		token: TokenId,575		amount: u128,576	) -> DispatchResult {577		if collection.permissions.access() == AccessMode::AllowList {578			collection.check_allowlist(sender)?;579			collection.check_allowlist(spender)?;580		}581582		<PalletCommon<T>>::ensure_correct_receiver(spender)?;583584		if <Balance<T>>::get((collection.id, token, sender)) < amount {585			ensure!(586				collection.ignores_owned_amount(sender) && Self::token_exists(collection, token),587				<CommonError<T>>::CantApproveMoreThanOwned588			);589		}590591		// =========592593		Self::set_allowance_unchecked(collection, sender, spender, token, amount);594		Ok(())595	}596597	/// Returns allowance, which should be set after transaction598	fn check_allowed(599		collection: &RefungibleHandle<T>,600		spender: &T::CrossAccountId,601		from: &T::CrossAccountId,602		token: TokenId,603		amount: u128,604		nesting_budget: &dyn Budget,605	) -> Result<Option<u128>, DispatchError> {606		if spender.conv_eq(from) {607			return Ok(None);608		}609		if collection.permissions.access() == AccessMode::AllowList {610			// `from`, `to` checked in [`transfer`]611			collection.check_allowlist(spender)?;612		}613		if let Some(source) = T::CrossTokenAddressMapping::address_to_token(from) {614			// TODO: should collection owner be allowed to perform this transfer?615			ensure!(616				<PalletStructure<T>>::check_indirectly_owned(617					spender.clone(),618					source.0,619					source.1,620					None,621					nesting_budget622				)?,623				<CommonError<T>>::ApprovedValueTooLow,624			);625			return Ok(None);626		}627		let allowance =628			<Allowance<T>>::get((collection.id, token, from, &spender)).checked_sub(amount);629		if allowance.is_none() {630			ensure!(631				collection.ignores_allowance(spender),632				<CommonError<T>>::ApprovedValueTooLow633			);634		}635		Ok(allowance)636	}637638	pub fn transfer_from(639		collection: &RefungibleHandle<T>,640		spender: &T::CrossAccountId,641		from: &T::CrossAccountId,642		to: &T::CrossAccountId,643		token: TokenId,644		amount: u128,645		nesting_budget: &dyn Budget,646	) -> DispatchResult {647		let allowance =648			Self::check_allowed(collection, spender, from, token, amount, nesting_budget)?;649650		// =========651652		Self::transfer(collection, from, to, token, amount, nesting_budget)?;653		if let Some(allowance) = allowance {654			Self::set_allowance_unchecked(collection, from, spender, token, allowance);655		}656		Ok(())657	}658659	pub fn burn_from(660		collection: &RefungibleHandle<T>,661		spender: &T::CrossAccountId,662		from: &T::CrossAccountId,663		token: TokenId,664		amount: u128,665		nesting_budget: &dyn Budget,666	) -> DispatchResult {667		let allowance =668			Self::check_allowed(collection, spender, from, token, amount, nesting_budget)?;669670		// =========671672		Self::burn(collection, from, token, amount)?;673		if let Some(allowance) = allowance {674			Self::set_allowance_unchecked(collection, from, spender, token, allowance);675		}676		Ok(())677	}678679	/// Delegated to `create_multiple_items`680	pub fn create_item(681		collection: &RefungibleHandle<T>,682		sender: &T::CrossAccountId,683		data: CreateRefungibleExData<T::CrossAccountId>,684		nesting_budget: &dyn Budget,685	) -> DispatchResult {686		Self::create_multiple_items(collection, sender, vec![data], nesting_budget)687	}688}