git.delta.rocks / unique-network / refs/commits / dc1fefd785d4

1#![cfg_attr(not(feature = "std"), no_std)]23use frame_support::{ensure, BoundedVec};4use nft_data_structs::{5	AccessMode, CUSTOM_DATA_LIMIT, Collection, CollectionId, CustomDataLimit,6	MAX_REFUNGIBLE_PIECES, TokenId,7};8use pallet_common::{9	Error as CommonError, Event as CommonEvent, Pallet as PalletCommon, account::CrossAccountId,10};11use sp_runtime::{ArithmeticError, DispatchError, DispatchResult};12use sp_std::{vec::Vec, vec, collections::btree_map::BTreeMap};13use core::ops::Deref;14use codec::{Encode, Decode};15use scale_info::TypeInfo;1617pub use pallet::*;18#[cfg(feature = "runtime-benchmarks")]19pub mod benchmarking;20pub mod common;21pub mod erc;22pub mod weights;23pub struct CreateItemData<T: Config> {24	pub const_data: BoundedVec<u8, CustomDataLimit>,25	pub variable_data: BoundedVec<u8, CustomDataLimit>,26	pub users: BTreeMap<T::CrossAccountId, u128>,27}28pub(crate) type SelfWeightOf<T> = <T as Config>::WeightInfo;2930#[derive(Encode, Decode, Default, TypeInfo)]31pub struct ItemData {32	pub const_data: Vec<u8>,33	pub variable_data: Vec<u8>,34}3536#[frame_support::pallet]37pub mod pallet {38	use super::*;39	use frame_support::{Blake2_128, Blake2_128Concat, Twox64Concat, pallet_prelude::*, storage::Key};40	use nft_data_structs::{CollectionId, TokenId};41	use super::weights::WeightInfo;4243	#[pallet::error]44	pub enum Error<T> {45		/// Not Refungible item data used to mint in Refungible collection.46		NotRefungibleDataUsedToMintFungibleCollectionToken,47		/// Maximum refungibility exceeded48		WrongRefungiblePieces,49	}5051	#[pallet::config]52	pub trait Config: frame_system::Config + pallet_common::Config {53		type WeightInfo: WeightInfo;54	}5556	#[pallet::pallet]57	#[pallet::generate_store(pub(super) trait Store)]58	pub struct Pallet<T>(_);5960	#[pallet::storage]61	pub(super) type TokensMinted<T: Config> =62		StorageMap<Hasher = Twox64Concat, Key = CollectionId, Value = u32, QueryKind = ValueQuery>;63	#[pallet::storage]64	pub(super) type TokensBurnt<T: Config> =65		StorageMap<Hasher = Twox64Concat, Key = CollectionId, Value = u32, QueryKind = ValueQuery>;6667	#[pallet::storage]68	pub(super) type TokenData<T: Config> = StorageNMap<69		Key = (Key<Twox64Concat, CollectionId>, Key<Twox64Concat, TokenId>),70		Value = ItemData,71		QueryKind = ValueQuery,72	>;7374	#[pallet::storage]75	pub(super) type TotalSupply<T: Config> = StorageNMap<76		Key = (Key<Twox64Concat, CollectionId>, Key<Twox64Concat, TokenId>),77		Value = u128,78		QueryKind = ValueQuery,79	>;8081	/// Used to enumerate tokens owned by account82	#[pallet::storage]83	pub(super) type Owned<T: Config> = StorageNMap<84		Key = (85			Key<Twox64Concat, CollectionId>,86			Key<Blake2_128Concat, T::CrossAccountId>,87			Key<Twox64Concat, TokenId>,88		),89		Value = bool,90		QueryKind = ValueQuery,91	>;9293	#[pallet::storage]94	pub(super) type AccountBalance<T: Config> = StorageNMap<95		Key = (96			Key<Twox64Concat, CollectionId>,97			// Owner98			Key<Blake2_128Concat, T::CrossAccountId>,99		),100		Value = u32,101		QueryKind = ValueQuery,102	>;103104	#[pallet::storage]105	pub(super) type Balance<T: Config> = StorageNMap<106		Key = (107			Key<Twox64Concat, CollectionId>,108			Key<Twox64Concat, TokenId>,109			// Owner110			Key<Blake2_128Concat, T::CrossAccountId>,111		),112		Value = u128,113		QueryKind = ValueQuery,114	>;115116	#[pallet::storage]117	pub(super) type Allowance<T: Config> = StorageNMap<118		Key = (119			Key<Twox64Concat, CollectionId>,120			Key<Twox64Concat, TokenId>,121			// Owner122			Key<Blake2_128, T::CrossAccountId>,123			// Spender124			Key<Blake2_128Concat, T::CrossAccountId>,125		),126		Value = u128,127		QueryKind = ValueQuery,128	>;129}130131pub struct RefungibleHandle<T: Config>(pallet_common::CollectionHandle<T>);132impl<T: Config> RefungibleHandle<T> {133	pub fn cast(inner: pallet_common::CollectionHandle<T>) -> Self {134		Self(inner)135	}136	pub fn into_inner(self) -> pallet_common::CollectionHandle<T> {137		self.0138	}139}140impl<T: Config> Deref for RefungibleHandle<T> {141	type Target = pallet_common::CollectionHandle<T>;142143	fn deref(&self) -> &Self::Target {144		&self.0145	}146}147148impl<T: Config> Pallet<T> {149	pub fn total_supply(collection: &RefungibleHandle<T>) -> u32 {150		<TokensMinted<T>>::get(collection.id) - <TokensBurnt<T>>::get(collection.id)151	}152	pub fn token_exists(collection: &RefungibleHandle<T>, token: TokenId) -> bool {153		<TotalSupply<T>>::contains_key((collection.id, token))154	}155}156157// unchecked calls skips any permission checks158impl<T: Config> Pallet<T> {159	pub fn init_collection(data: Collection<T>) -> Result<CollectionId, DispatchError> {160		PalletCommon::init_collection(data)161	}162	pub fn destroy_collection(163		collection: RefungibleHandle<T>,164		sender: &T::CrossAccountId,165	) -> DispatchResult {166		let id = collection.id;167168		// =========169170		PalletCommon::destroy_collection(collection.0, sender)?;171172		<TokensMinted<T>>::remove(id);173		<TokensBurnt<T>>::remove(id);174		<TokenData<T>>::remove_prefix((id,), None);175		<TotalSupply<T>>::remove_prefix((id,), None);176		<Balance<T>>::remove_prefix((id,), None);177		<Allowance<T>>::remove_prefix((id,), None);178		Ok(())179	}180181	pub fn burn_token(collection: &RefungibleHandle<T>, token_id: TokenId) -> DispatchResult {182		let burnt = <TokensBurnt<T>>::get(collection.id)183			.checked_add(1)184			.ok_or(ArithmeticError::Overflow)?;185186		<TokensBurnt<T>>::insert(collection.id, burnt);187		<TokenData<T>>::remove((collection.id, token_id));188		<TotalSupply<T>>::remove((collection.id, token_id));189		<Balance<T>>::remove_prefix((collection.id, token_id), None);190		<Allowance<T>>::remove_prefix((collection.id, token_id), None);191		// TODO: ERC721 transfer event192		return Ok(());193	}194195	pub fn burn(196		collection: &RefungibleHandle<T>,197		owner: &T::CrossAccountId,198		token: TokenId,199		amount: u128,200	) -> DispatchResult {201		let total_supply = <TotalSupply<T>>::get((collection.id, token))202			.checked_sub(amount)203			.ok_or(<CommonError<T>>::TokenValueTooLow)?;204205		// This was probally last owner of this token?206		if total_supply == 0 {207			// Ensure user actually owns this amount208			ensure!(209				<Balance<T>>::get((collection.id, token, owner)) == amount,210				<CommonError<T>>::TokenValueTooLow211			);212			let account_balance = <AccountBalance<T>>::get((collection.id, owner))213				.checked_sub(1)214				// Should not occur215				.ok_or(ArithmeticError::Underflow)?;216217			// =========218219			<Owned<T>>::remove((collection.id, owner, token));220			<AccountBalance<T>>::insert((collection.id, owner), account_balance);221			Self::burn_token(collection, token)?;222			<PalletCommon<T>>::deposit_event(CommonEvent::ItemDestroyed(223				collection.id,224				token,225				owner.clone(),226				amount,227			));228			return Ok(());229		}230231		let balance = <Balance<T>>::get((collection.id, token, owner))232			.checked_sub(amount)233			.ok_or(<CommonError<T>>::TokenValueTooLow)?;234		let account_balance = if balance == 0 {235			<AccountBalance<T>>::get((collection.id, owner))236				.checked_sub(1)237				// Should not occur238				.ok_or(ArithmeticError::Underflow)?239		} else {240			0241		};242243		// =========244245		if balance == 0 {246			<Owned<T>>::remove((collection.id, owner, token));247			<Balance<T>>::remove((collection.id, token, owner));248			<AccountBalance<T>>::insert((collection.id, owner), account_balance);249		} else {250			<Balance<T>>::insert((collection.id, token, owner), balance);251		}252		<TotalSupply<T>>::insert((collection.id, token), total_supply);253		// TODO: ERC20 transfer event254		<PalletCommon<T>>::deposit_event(CommonEvent::ItemDestroyed(255			collection.id,256			token,257			owner.clone(),258			amount,259		));260		Ok(())261	}262263	pub fn transfer(264		collection: &RefungibleHandle<T>,265		from: &T::CrossAccountId,266		to: &T::CrossAccountId,267		token: TokenId,268		amount: u128,269	) -> DispatchResult {270		ensure!(271			collection.limits.transfers_enabled(),272			<CommonError<T>>::TransferNotAllowed273		);274275		if collection.access == AccessMode::AllowList {276			collection.check_allowlist(from)?;277			collection.check_allowlist(to)?;278		}279		<PalletCommon<T>>::ensure_correct_receiver(to)?;280281		let balance_from = <Balance<T>>::get((collection.id, token, from))282			.checked_sub(amount)283			.ok_or(<CommonError<T>>::TokenValueTooLow)?;284		let mut create_target = false;285		let from_to_differ = from != to;286		let balance_to = if from != to {287			let old_balance = <Balance<T>>::get((collection.id, token, to));288			if old_balance == 0 {289				create_target = true;290			}291			Some(292				old_balance293					.checked_add(amount)294					.ok_or(ArithmeticError::Overflow)?,295			)296		} else {297			None298		};299300		let account_balance_from = if balance_from == 0 {301			Some(302				<AccountBalance<T>>::get((collection.id, from))303					.checked_sub(1)304					// Should not occur305					.ok_or(ArithmeticError::Underflow)?,306			)307		} else {308			None309		};310		// Account data is created in token, AccountBalance should be increased311		// But only if from != to as we shouldn't check overflow in this case312		let account_balance_to = if create_target && from_to_differ {313			let account_balance_to = <AccountBalance<T>>::get((collection.id, to))314				.checked_add(1)315				.ok_or(ArithmeticError::Overflow)?;316			ensure!(317				account_balance_to < collection.limits.account_token_ownership_limit(),318				<CommonError<T>>::AccountTokenLimitExceeded,319			);320321			Some(account_balance_to)322		} else {323			None324		};325326		// =========327328		if let Some(balance_to) = balance_to {329			// from != to330			if balance_from == 0 {331				<Balance<T>>::remove((collection.id, token, from));332			} else {333				<Balance<T>>::insert((collection.id, token, from), balance_from);334			}335			<Balance<T>>::insert((collection.id, token, to), balance_to);336			if let Some(account_balance_from) = account_balance_from {337				<AccountBalance<T>>::insert((collection.id, from), account_balance_from);338				<Owned<T>>::remove((collection.id, from, token));339			}340			if let Some(account_balance_to) = account_balance_to {341				<AccountBalance<T>>::insert((collection.id, to), account_balance_to);342				<Owned<T>>::insert((collection.id, to, token), true);343			}344		}345346		// TODO: ERC20 transfer event347		<PalletCommon<T>>::deposit_event(CommonEvent::Transfer(348			collection.id,349			token,350			from.clone(),351			to.clone(),352			amount,353		));354		Ok(())355	}356357	pub fn create_multiple_items(358		collection: &RefungibleHandle<T>,359		sender: &T::CrossAccountId,360		data: Vec<CreateItemData<T>>,361	) -> DispatchResult {362		if !collection.is_owner_or_admin(sender) {363			ensure!(364				collection.mint_mode,365				<CommonError<T>>::PublicMintingNotAllowed366			);367			collection.check_allowlist(sender)?;368369			for item in data.iter() {370				for (user, _) in &item.users {371					collection.check_allowlist(&user)?;372				}373			}374		}375376		for item in data.iter() {377			for (owner, _) in item.users.iter() {378				<PalletCommon<T>>::ensure_correct_receiver(owner)?;379			}380		}381382		// Total pieces per tokens383		let totals = data384			.iter()385			.map(|data| {386				Ok(data387					.users388					.iter()389					.map(|u| u.1)390					.try_fold(0u128, |acc, v| acc.checked_add(*v))391					.ok_or(ArithmeticError::Overflow)?)392			})393			.collect::<Result<Vec<_>, DispatchError>>()?;394		for total in &totals {395			ensure!(396				*total <= MAX_REFUNGIBLE_PIECES,397				<Error<T>>::WrongRefungiblePieces398			);399		}400401		let first_token_id = <TokensMinted<T>>::get(collection.id);402		let tokens_minted = first_token_id403			.checked_add(data.len() as u32)404			.ok_or(ArithmeticError::Overflow)?;405		ensure!(406			tokens_minted < collection.limits.token_limit(),407			<CommonError<T>>::CollectionTokenLimitExceeded408		);409410		let mut balances = BTreeMap::new();411		for data in &data {412			for (owner, _) in &data.users {413				let balance = balances414					.entry(owner)415					.or_insert_with(|| <AccountBalance<T>>::get((collection.id, owner)));416				*balance = balance.checked_add(1).ok_or(ArithmeticError::Overflow)?;417418				ensure!(419					*balance <= collection.limits.account_token_ownership_limit(),420					<CommonError<T>>::AccountTokenLimitExceeded,421				);422			}423		}424425		// =========426427		<TokensMinted<T>>::insert(collection.id, tokens_minted);428		for (account, balance) in balances {429			<AccountBalance<T>>::insert((collection.id, account), balance);430		}431		for (i, token) in data.into_iter().enumerate() {432			let token_id = first_token_id + i as u32 + 1;433			<TotalSupply<T>>::insert((collection.id, token_id), totals[i]);434435			<TokenData<T>>::insert(436				(collection.id, token_id),437				ItemData {438					const_data: token.const_data.into(),439					variable_data: token.variable_data.into(),440				},441			);442			for (user, amount) in token.users.into_iter() {443				if amount == 0 {444					continue;445				}446				<Balance<T>>::insert((collection.id, token_id, &user), amount);447				<Owned<T>>::insert((collection.id, &user, TokenId(token_id)), true);448				// TODO: ERC20 transfer event449				<PalletCommon<T>>::deposit_event(CommonEvent::ItemCreated(450					collection.id,451					TokenId(token_id),452					user,453					amount,454				));455			}456		}457		Ok(())458	}459460	pub fn set_allowance_unchecked(461		collection: &RefungibleHandle<T>,462		sender: &T::CrossAccountId,463		spender: &T::CrossAccountId,464		token: TokenId,465		amount: u128,466	) {467		<Allowance<T>>::insert((collection.id, token, sender, spender), amount);468		// TODO: ERC20 approval event469		<PalletCommon<T>>::deposit_event(CommonEvent::Approved(470			collection.id,471			token,472			sender.clone(),473			spender.clone(),474			amount,475		))476	}477478	pub fn set_allowance(479		collection: &RefungibleHandle<T>,480		sender: &T::CrossAccountId,481		spender: &T::CrossAccountId,482		token: TokenId,483		amount: u128,484	) -> DispatchResult {485		if collection.access == AccessMode::AllowList {486			collection.check_allowlist(&sender)?;487			collection.check_allowlist(&spender)?;488		}489490		<PalletCommon<T>>::ensure_correct_receiver(spender)?;491492		if <Balance<T>>::get((collection.id, token, sender)) < amount {493			ensure!(494				collection.ignores_owned_amount(sender) && Self::token_exists(collection, token),495				<CommonError<T>>::CantApproveMoreThanOwned496			);497		}498499		// =========500501		Self::set_allowance_unchecked(collection, sender, spender, token, amount);502		Ok(())503	}504505	pub fn transfer_from(506		collection: &RefungibleHandle<T>,507		spender: &T::CrossAccountId,508		from: &T::CrossAccountId,509		to: &T::CrossAccountId,510		token: TokenId,511		amount: u128,512	) -> DispatchResult {513		if spender.conv_eq(from) {514			return Self::transfer(collection, from, to, token, amount);515		}516		if collection.access == AccessMode::AllowList {517			// `from`, `to` checked in [`transfer`]518			collection.check_allowlist(spender)?;519		}520521		let allowance =522			<Allowance<T>>::get((collection.id, token, from, &spender)).checked_sub(amount);523		if allowance.is_none() {524			ensure!(525				collection.ignores_allowance(spender),526				<CommonError<T>>::TokenValueNotEnough527			);528		}529530		// =========531532		Self::transfer(collection, from, to, token, amount)?;533		if let Some(allowance) = allowance {534			Self::set_allowance_unchecked(collection, from, spender, token, allowance);535		}536		Ok(())537	}538539	pub fn burn_from(540		collection: &RefungibleHandle<T>,541		spender: &T::CrossAccountId,542		from: &T::CrossAccountId,543		token: TokenId,544		amount: u128,545	) -> DispatchResult {546		if spender.conv_eq(from) {547			return Self::burn(collection, from, token, amount);548		}549		if collection.access == AccessMode::AllowList {550			// `from` checked in [`burn`]551			collection.check_allowlist(spender)?;552		}553554		let allowance =555			<Allowance<T>>::get((collection.id, token, from, &spender)).checked_sub(amount);556		if allowance.is_none() {557			ensure!(558				collection.ignores_allowance(spender),559				<CommonError<T>>::TokenValueNotEnough560			);561		}562563		// =========564565		Self::burn(collection, from, token, amount)?;566		if let Some(allowance) = allowance {567			Self::set_allowance_unchecked(collection, from, spender, token, allowance);568		}569		Ok(())570	}571572	pub fn set_variable_metadata(573		collection: &RefungibleHandle<T>,574		sender: &T::CrossAccountId,575		token: TokenId,576		data: Vec<u8>,577	) -> DispatchResult {578		ensure!(579			data.len() as u32 <= CUSTOM_DATA_LIMIT,580			<CommonError<T>>::TokenVariableDataLimitExceeded581		);582		collection.check_can_update_meta(583			sender,584			&T::CrossAccountId::from_sub(collection.owner.clone()),585		)?;586587		let token_data = <TokenData<T>>::get((collection.id, token));588589		// =========590591		<TokenData<T>>::insert(592			(collection.id, token),593			ItemData {594				variable_data: data,595				..token_data596			},597		);598		Ok(())599	}600601	/// Delegated to `create_multiple_items`602	pub fn create_item(603		collection: &RefungibleHandle<T>,604		sender: &T::CrossAccountId,605		data: CreateItemData<T>,606	) -> DispatchResult {607		Self::create_multiple_items(collection, sender, vec![data])608	}609}