git.delta.rocks / unique-network / refs/commits / 98013fc81aa8

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,23};24use pallet_evm::account::CrossAccountId;25use pallet_common::{26	Error as CommonError, Event as CommonEvent, Pallet as PalletCommon,27	CollectionHandle, dispatch::CollectionDispatch,28};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#[derive(Encode, Decode, Default, TypeInfo, MaxEncodedLen)]44pub struct ItemData {45	pub const_data: BoundedVec<u8, CustomDataLimit>,46	pub variable_data: BoundedVec<u8, CustomDataLimit>,47}4849#[frame_support::pallet]50pub mod pallet {51	use super::*;52	use frame_support::{Blake2_128, Blake2_128Concat, Twox64Concat, pallet_prelude::*, storage::Key};53	use up_data_structs::{CollectionId, TokenId};54	use super::weights::WeightInfo;5556	#[pallet::error]57	pub enum Error<T> {58		/// Not Refungible item data used to mint in Refungible collection.59		NotRefungibleDataUsedToMintFungibleCollectionToken,60		/// Maximum refungibility exceeded61		WrongRefungiblePieces,62		/// Refungible token can't nest other tokens63		RefungibleDisallowsNesting,64	}6566	#[pallet::config]67	pub trait Config: frame_system::Config + pallet_common::Config {68		type WeightInfo: WeightInfo;69	}7071	#[pallet::pallet]72	#[pallet::generate_store(pub(super) trait Store)]73	pub struct Pallet<T>(_);7475	#[pallet::storage]76	pub type TokensMinted<T: Config> =77		StorageMap<Hasher = Twox64Concat, Key = CollectionId, Value = u32, QueryKind = ValueQuery>;78	#[pallet::storage]79	pub type TokensBurnt<T: Config> =80		StorageMap<Hasher = Twox64Concat, Key = CollectionId, Value = u32, QueryKind = ValueQuery>;8182	#[pallet::storage]83	pub type TokenData<T: Config> = StorageNMap<84		Key = (Key<Twox64Concat, CollectionId>, Key<Twox64Concat, TokenId>),85		Value = ItemData,86		QueryKind = ValueQuery,87	>;8889	#[pallet::storage]90	pub type TotalSupply<T: Config> = StorageNMap<91		Key = (Key<Twox64Concat, CollectionId>, Key<Twox64Concat, TokenId>),92		Value = u128,93		QueryKind = ValueQuery,94	>;9596	/// Used to enumerate tokens owned by account97	#[pallet::storage]98	pub type Owned<T: Config> = StorageNMap<99		Key = (100			Key<Twox64Concat, CollectionId>,101			Key<Blake2_128Concat, T::CrossAccountId>,102			Key<Twox64Concat, TokenId>,103		),104		Value = bool,105		QueryKind = ValueQuery,106	>;107108	#[pallet::storage]109	pub type AccountBalance<T: Config> = StorageNMap<110		Key = (111			Key<Twox64Concat, CollectionId>,112			// Owner113			Key<Blake2_128Concat, T::CrossAccountId>,114		),115		Value = u32,116		QueryKind = ValueQuery,117	>;118119	#[pallet::storage]120	pub type Balance<T: Config> = StorageNMap<121		Key = (122			Key<Twox64Concat, CollectionId>,123			Key<Twox64Concat, TokenId>,124			// Owner125			Key<Blake2_128Concat, T::CrossAccountId>,126		),127		Value = u128,128		QueryKind = ValueQuery,129	>;130131	#[pallet::storage]132	pub type Allowance<T: Config> = StorageNMap<133		Key = (134			Key<Twox64Concat, CollectionId>,135			Key<Twox64Concat, TokenId>,136			// Owner137			Key<Blake2_128, T::CrossAccountId>,138			// Spender139			Key<Blake2_128Concat, T::CrossAccountId>,140		),141		Value = u128,142		QueryKind = ValueQuery,143	>;144}145146pub struct RefungibleHandle<T: Config>(pallet_common::CollectionHandle<T>);147impl<T: Config> RefungibleHandle<T> {148	pub fn cast(inner: pallet_common::CollectionHandle<T>) -> Self {149		Self(inner)150	}151	pub fn into_inner(self) -> pallet_common::CollectionHandle<T> {152		self.0153	}154}155impl<T: Config> Deref for RefungibleHandle<T> {156	type Target = pallet_common::CollectionHandle<T>;157158	fn deref(&self) -> &Self::Target {159		&self.0160	}161}162163impl<T: Config> Pallet<T> {164	pub fn total_supply(collection: &RefungibleHandle<T>) -> u32 {165		<TokensMinted<T>>::get(collection.id) - <TokensBurnt<T>>::get(collection.id)166	}167	pub fn token_exists(collection: &RefungibleHandle<T>, token: TokenId) -> bool {168		<TotalSupply<T>>::contains_key((collection.id, token))169	}170}171172// unchecked calls skips any permission checks173impl<T: Config> Pallet<T> {174	pub fn init_collection(175		owner: T::AccountId,176		data: CreateCollectionData<T::AccountId>,177	) -> Result<CollectionId, DispatchError> {178		<PalletCommon<T>>::init_collection(owner, data)179	}180	pub fn destroy_collection(181		collection: RefungibleHandle<T>,182		sender: &T::CrossAccountId,183	) -> DispatchResult {184		let id = collection.id;185186		// =========187188		PalletCommon::destroy_collection(collection.0, sender)?;189190		<TokensMinted<T>>::remove(id);191		<TokensBurnt<T>>::remove(id);192		<TokenData<T>>::remove_prefix((id,), None);193		<TotalSupply<T>>::remove_prefix((id,), None);194		<Balance<T>>::remove_prefix((id,), None);195		<Allowance<T>>::remove_prefix((id,), None);196		<Owned<T>>::remove_prefix((id,), None);197		<AccountBalance<T>>::remove_prefix((id,), None);198		Ok(())199	}200201	pub fn burn_token(collection: &RefungibleHandle<T>, token_id: TokenId) -> DispatchResult {202		let burnt = <TokensBurnt<T>>::get(collection.id)203			.checked_add(1)204			.ok_or(ArithmeticError::Overflow)?;205206		<TokensBurnt<T>>::insert(collection.id, burnt);207		<TokenData<T>>::remove((collection.id, token_id));208		<TotalSupply<T>>::remove((collection.id, token_id));209		<Balance<T>>::remove_prefix((collection.id, token_id), None);210		<Allowance<T>>::remove_prefix((collection.id, token_id), None);211		// TODO: ERC721 transfer event212		Ok(())213	}214215	pub fn burn(216		collection: &RefungibleHandle<T>,217		owner: &T::CrossAccountId,218		token: TokenId,219		amount: u128,220	) -> DispatchResult {221		let total_supply = <TotalSupply<T>>::get((collection.id, token))222			.checked_sub(amount)223			.ok_or(<CommonError<T>>::TokenValueTooLow)?;224225		// This was probally last owner of this token?226		if total_supply == 0 {227			// Ensure user actually owns this amount228			ensure!(229				<Balance<T>>::get((collection.id, token, owner)) == amount,230				<CommonError<T>>::TokenValueTooLow231			);232			let account_balance = <AccountBalance<T>>::get((collection.id, owner))233				.checked_sub(1)234				// Should not occur235				.ok_or(ArithmeticError::Underflow)?;236237			// =========238239			<Owned<T>>::remove((collection.id, owner, token));240			<AccountBalance<T>>::insert((collection.id, owner), account_balance);241			Self::burn_token(collection, token)?;242			<PalletCommon<T>>::deposit_event(CommonEvent::ItemDestroyed(243				collection.id,244				token,245				owner.clone(),246				amount,247			));248			return Ok(());249		}250251		let balance = <Balance<T>>::get((collection.id, token, owner))252			.checked_sub(amount)253			.ok_or(<CommonError<T>>::TokenValueTooLow)?;254		let account_balance = if balance == 0 {255			<AccountBalance<T>>::get((collection.id, owner))256				.checked_sub(1)257				// Should not occur258				.ok_or(ArithmeticError::Underflow)?259		} else {260			0261		};262263		// =========264265		if balance == 0 {266			<Owned<T>>::remove((collection.id, owner, token));267			<Balance<T>>::remove((collection.id, token, owner));268			<AccountBalance<T>>::insert((collection.id, owner), account_balance);269		} else {270			<Balance<T>>::insert((collection.id, token, owner), balance);271		}272		<TotalSupply<T>>::insert((collection.id, token), total_supply);273		// TODO: ERC20 transfer event274		<PalletCommon<T>>::deposit_event(CommonEvent::ItemDestroyed(275			collection.id,276			token,277			owner.clone(),278			amount,279		));280		Ok(())281	}282283	pub fn transfer(284		collection: &RefungibleHandle<T>,285		from: &T::CrossAccountId,286		to: &T::CrossAccountId,287		token: TokenId,288		amount: u128,289	) -> DispatchResult {290		ensure!(291			collection.limits.transfers_enabled(),292			<CommonError<T>>::TransferNotAllowed293		);294295		if collection.access == AccessMode::AllowList {296			collection.check_allowlist(from)?;297			collection.check_allowlist(to)?;298		}299		<PalletCommon<T>>::ensure_correct_receiver(to)?;300301		let balance_from = <Balance<T>>::get((collection.id, token, from))302			.checked_sub(amount)303			.ok_or(<CommonError<T>>::TokenValueTooLow)?;304		let mut create_target = false;305		let from_to_differ = from != to;306		let balance_to = if from != to {307			let old_balance = <Balance<T>>::get((collection.id, token, to));308			if old_balance == 0 {309				create_target = true;310			}311			Some(312				old_balance313					.checked_add(amount)314					.ok_or(ArithmeticError::Overflow)?,315			)316		} else {317			None318		};319320		let account_balance_from = if balance_from == 0 {321			Some(322				<AccountBalance<T>>::get((collection.id, from))323					.checked_sub(1)324					// Should not occur325					.ok_or(ArithmeticError::Underflow)?,326			)327		} else {328			None329		};330		// Account data is created in token, AccountBalance should be increased331		// But only if from != to as we shouldn't check overflow in this case332		let account_balance_to = if create_target && from_to_differ {333			let account_balance_to = <AccountBalance<T>>::get((collection.id, to))334				.checked_add(1)335				.ok_or(ArithmeticError::Overflow)?;336			ensure!(337				account_balance_to < collection.limits.account_token_ownership_limit(),338				<CommonError<T>>::AccountTokenLimitExceeded,339			);340341			Some(account_balance_to)342		} else {343			None344		};345346		if let Some(target) = T::CrossTokenAddressMapping::address_to_token(to) {347			let handle = <CollectionHandle<T>>::try_get(target.0)?;348			let dispatch = T::CollectionDispatch::dispatch(handle);349			let dispatch = dispatch.as_dyn();350351			// =========352353			dispatch.nest_token(from.clone(), (collection.id, token), target.1)?;354		}355356		if let Some(balance_to) = balance_to {357			// from != to358			if balance_from == 0 {359				<Balance<T>>::remove((collection.id, token, from));360			} else {361				<Balance<T>>::insert((collection.id, token, from), balance_from);362			}363			<Balance<T>>::insert((collection.id, token, to), balance_to);364			if let Some(account_balance_from) = account_balance_from {365				<AccountBalance<T>>::insert((collection.id, from), account_balance_from);366				<Owned<T>>::remove((collection.id, from, token));367			}368			if let Some(account_balance_to) = account_balance_to {369				<AccountBalance<T>>::insert((collection.id, to), account_balance_to);370				<Owned<T>>::insert((collection.id, to, token), true);371			}372		}373374		// TODO: ERC20 transfer event375		<PalletCommon<T>>::deposit_event(CommonEvent::Transfer(376			collection.id,377			token,378			from.clone(),379			to.clone(),380			amount,381		));382		Ok(())383	}384385	pub fn create_multiple_items(386		collection: &RefungibleHandle<T>,387		sender: &T::CrossAccountId,388		data: Vec<CreateRefungibleExData<T::CrossAccountId>>,389	) -> DispatchResult {390		if !collection.is_owner_or_admin(sender) {391			ensure!(392				collection.mint_mode,393				<CommonError<T>>::PublicMintingNotAllowed394			);395			collection.check_allowlist(sender)?;396397			for item in data.iter() {398				for user in item.users.keys() {399					collection.check_allowlist(user)?;400				}401			}402		}403404		for item in data.iter() {405			for (owner, _) in item.users.iter() {406				<PalletCommon<T>>::ensure_correct_receiver(owner)?;407			}408		}409410		// Total pieces per tokens411		let totals = data412			.iter()413			.map(|data| {414				Ok(data415					.users416					.iter()417					.map(|u| u.1)418					.try_fold(0u128, |acc, v| acc.checked_add(*v))419					.ok_or(ArithmeticError::Overflow)?)420			})421			.collect::<Result<Vec<_>, DispatchError>>()?;422		for total in &totals {423			ensure!(424				*total <= MAX_REFUNGIBLE_PIECES,425				<Error<T>>::WrongRefungiblePieces426			);427		}428429		let first_token_id = <TokensMinted<T>>::get(collection.id);430		let tokens_minted = first_token_id431			.checked_add(data.len() as u32)432			.ok_or(ArithmeticError::Overflow)?;433		ensure!(434			tokens_minted < collection.limits.token_limit(),435			<CommonError<T>>::CollectionTokenLimitExceeded436		);437438		let mut balances = BTreeMap::new();439		for data in &data {440			for owner in data.users.keys() {441				let balance = balances442					.entry(owner)443					.or_insert_with(|| <AccountBalance<T>>::get((collection.id, owner)));444				*balance = balance.checked_add(1).ok_or(ArithmeticError::Overflow)?;445446				ensure!(447					*balance <= collection.limits.account_token_ownership_limit(),448					<CommonError<T>>::AccountTokenLimitExceeded,449				);450			}451		}452453		// =========454455		<TokensMinted<T>>::insert(collection.id, tokens_minted);456		for (account, balance) in balances {457			<AccountBalance<T>>::insert((collection.id, account), balance);458		}459		for (i, token) in data.into_iter().enumerate() {460			let token_id = first_token_id + i as u32 + 1;461			<TotalSupply<T>>::insert((collection.id, token_id), totals[i]);462463			<TokenData<T>>::insert(464				(collection.id, token_id),465				ItemData {466					const_data: token.const_data,467					variable_data: token.variable_data,468				},469			);470			for (user, amount) in token.users.into_iter() {471				if amount == 0 {472					continue;473				}474				<Balance<T>>::insert((collection.id, token_id, &user), amount);475				<Owned<T>>::insert((collection.id, &user, TokenId(token_id)), true);476				// TODO: ERC20 transfer event477				<PalletCommon<T>>::deposit_event(CommonEvent::ItemCreated(478					collection.id,479					TokenId(token_id),480					user,481					amount,482				));483			}484		}485		Ok(())486	}487488	pub fn set_allowance_unchecked(489		collection: &RefungibleHandle<T>,490		sender: &T::CrossAccountId,491		spender: &T::CrossAccountId,492		token: TokenId,493		amount: u128,494	) {495		if amount == 0 {496			<Allowance<T>>::remove((collection.id, token, sender, spender));497		} else {498			<Allowance<T>>::insert((collection.id, token, sender, spender), amount);499		}500		// TODO: ERC20 approval event501		<PalletCommon<T>>::deposit_event(CommonEvent::Approved(502			collection.id,503			token,504			sender.clone(),505			spender.clone(),506			amount,507		))508	}509510	pub fn set_allowance(511		collection: &RefungibleHandle<T>,512		sender: &T::CrossAccountId,513		spender: &T::CrossAccountId,514		token: TokenId,515		amount: u128,516	) -> DispatchResult {517		if collection.access == AccessMode::AllowList {518			collection.check_allowlist(sender)?;519			collection.check_allowlist(spender)?;520		}521522		<PalletCommon<T>>::ensure_correct_receiver(spender)?;523524		if <Balance<T>>::get((collection.id, token, sender)) < amount {525			ensure!(526				collection.ignores_owned_amount(sender) && Self::token_exists(collection, token),527				<CommonError<T>>::CantApproveMoreThanOwned528			);529		}530531		// =========532533		Self::set_allowance_unchecked(collection, sender, spender, token, amount);534		Ok(())535	}536537	pub fn transfer_from(538		collection: &RefungibleHandle<T>,539		spender: &T::CrossAccountId,540		from: &T::CrossAccountId,541		to: &T::CrossAccountId,542		token: TokenId,543		amount: u128,544	) -> DispatchResult {545		if spender.conv_eq(from) {546			return Self::transfer(collection, from, to, token, amount);547		}548		if collection.access == AccessMode::AllowList {549			// `from`, `to` checked in [`transfer`]550			collection.check_allowlist(spender)?;551		}552553		let allowance =554			<Allowance<T>>::get((collection.id, token, from, &spender)).checked_sub(amount);555		if allowance.is_none() {556			ensure!(557				collection.ignores_allowance(spender),558				<CommonError<T>>::ApprovedValueTooLow559			);560		}561562		// =========563564		Self::transfer(collection, from, to, token, amount)?;565		if let Some(allowance) = allowance {566			Self::set_allowance_unchecked(collection, from, spender, token, allowance);567		}568		Ok(())569	}570571	pub fn burn_from(572		collection: &RefungibleHandle<T>,573		spender: &T::CrossAccountId,574		from: &T::CrossAccountId,575		token: TokenId,576		amount: u128,577	) -> DispatchResult {578		if spender.conv_eq(from) {579			return Self::burn(collection, from, token, amount);580		}581		if collection.access == AccessMode::AllowList {582			// `from` checked in [`burn`]583			collection.check_allowlist(spender)?;584		}585586		let allowance =587			<Allowance<T>>::get((collection.id, token, from, &spender)).checked_sub(amount);588		if allowance.is_none() {589			ensure!(590				collection.ignores_allowance(spender),591				<CommonError<T>>::ApprovedValueTooLow592			);593		}594595		// =========596597		Self::burn(collection, from, token, amount)?;598		if let Some(allowance) = allowance {599			Self::set_allowance_unchecked(collection, from, spender, token, allowance);600		}601		Ok(())602	}603604	pub fn set_variable_metadata(605		collection: &RefungibleHandle<T>,606		sender: &T::CrossAccountId,607		token: TokenId,608		data: BoundedVec<u8, CustomDataLimit>,609	) -> DispatchResult {610		collection.check_can_update_meta(611			sender,612			&T::CrossAccountId::from_sub(collection.owner.clone()),613		)?;614615		let token_data = <TokenData<T>>::get((collection.id, token));616617		// =========618619		<TokenData<T>>::insert(620			(collection.id, token),621			ItemData {622				variable_data: data,623				..token_data624			},625		);626		Ok(())627	}628629	/// Delegated to `create_multiple_items`630	pub fn create_item(631		collection: &RefungibleHandle<T>,632		sender: &T::CrossAccountId,633		data: CreateRefungibleExData<T::CrossAccountId>,634	) -> DispatchResult {635		Self::create_multiple_items(collection, sender, vec![data])636	}637}