git.delta.rocks / unique-network / refs/commits / b06f11d53911

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//! # Nonfungible Pallet EVM API18//!19//! Provides ERC-721 standart support implementation and EVM API for unique extensions for Nonfungible Pallet.20//! Method implementations are mostly doing parameter conversion and calling Nonfungible Pallet methods.2122extern crate alloc;23use core::{24	char::{REPLACEMENT_CHARACTER, decode_utf16},25	convert::TryInto,26};27use evm_coder::{abi::AbiType, ToLog, generate_stubgen, solidity_interface, types::*};28use frame_support::BoundedVec;29use up_data_structs::{30	TokenId, PropertyPermission, PropertyKeyPermission, Property, CollectionId, PropertyKey,31	CollectionPropertiesVec,32};33use pallet_evm_coder_substrate::{34	dispatch_to_evm, frontier_contract,35	execution::{Result, PreDispatch, Error},36};37use sp_std::{vec::Vec, vec};38use pallet_common::{39	CollectionHandle, CollectionPropertyPermissions, CommonCollectionOperations,40	erc::{CommonEvmHandler, PrecompileResult, CollectionCall, static_property::key},41	eth::{self, TokenUri},42};43use pallet_evm::{account::CrossAccountId, PrecompileHandle};44use pallet_evm_coder_substrate::call;45use pallet_structure::{SelfWeightOf as StructureWeight, weights::WeightInfo as _};46use sp_core::{U256, Get};4748use crate::{49	AccountBalance, Config, CreateItemData, NonfungibleHandle, Pallet, TokenData, TokensMinted,50	TokenProperties, SelfWeightOf, weights::WeightInfo,51};5253/// Nft events.54#[derive(ToLog)]55pub enum ERC721TokenEvent {56	/// The token has been changed.57	TokenChanged {58		/// Collection ID.59		#[indexed]60		collection_id: Address,61		/// Token ID.62		token_id: U256,63	},64}6566frontier_contract! {67	macro_rules! NonfungibleHandle_result {...}68	impl<T: Config> Contract for NonfungibleHandle<T> {...}69}7071/// @title A contract that allows to set and delete token properties and change token property permissions.72#[solidity_interface(name = TokenProperties, events(ERC721TokenEvent), enum(derive(PreDispatch)), enum_attr(weight))]73impl<T: Config> NonfungibleHandle<T> {74	/// @notice Set permissions for token property.75	/// @dev Throws error if `msg.sender` is not admin or owner of the collection.76	/// @param key Property key.77	/// @param isMutable Permission to mutate property.78	/// @param collectionAdmin Permission to mutate property by collection admin if property is mutable.79	/// @param tokenOwner Permission to mutate property by token owner if property is mutable.80	#[solidity(hide)]81	#[weight(<SelfWeightOf<T>>::set_token_property_permissions(1))]82	fn set_token_property_permission(83		&mut self,84		caller: Caller,85		key: String,86		is_mutable: bool,87		collection_admin: bool,88		token_owner: bool,89	) -> Result<()> {90		let caller = T::CrossAccountId::from_eth(caller);91		<Pallet<T>>::set_token_property_permissions(92			self,93			&caller,94			vec![PropertyKeyPermission {95				key: <Vec<u8>>::from(key)96					.try_into()97					.map_err(|_| "too long key")?,98				permission: PropertyPermission {99					mutable: is_mutable,100					collection_admin,101					token_owner,102				},103			}],104		)105		.map_err(dispatch_to_evm::<T>)106	}107108	/// @notice Set permissions for token property.109	/// @dev Throws error if `msg.sender` is not admin or owner of the collection.110	/// @param permissions Permissions for keys.111	#[weight(<SelfWeightOf<T>>::set_token_property_permissions(permissions.len() as u32))]112	fn set_token_property_permissions(113		&mut self,114		caller: Caller,115		permissions: Vec<eth::TokenPropertyPermission>,116	) -> Result<()> {117		let caller = T::CrossAccountId::from_eth(caller);118		let perms = eth::TokenPropertyPermission::into_property_key_permissions(permissions)?;119120		<Pallet<T>>::set_token_property_permissions(self, &caller, perms)121			.map_err(dispatch_to_evm::<T>)122	}123124	/// @notice Get permissions for token properties.125	fn token_property_permissions(&self) -> Result<Vec<eth::TokenPropertyPermission>> {126		let perms = <Pallet<T>>::token_property_permission(self.id);127		Ok(perms128			.into_iter()129			.map(eth::TokenPropertyPermission::from)130			.collect())131	}132133	/// @notice Set token property value.134	/// @dev Throws error if `msg.sender` has no permission to edit the property.135	/// @param tokenId ID of the token.136	/// @param key Property key.137	/// @param value Property value.138	#[solidity(hide)]139	#[weight(<SelfWeightOf<T>>::set_token_properties(1))]140	fn set_property(141		&mut self,142		caller: Caller,143		token_id: U256,144		key: String,145		value: Bytes,146	) -> Result<()> {147		let caller = T::CrossAccountId::from_eth(caller);148		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;149		let key = <Vec<u8>>::from(key)150			.try_into()151			.map_err(|_| "key too long")?;152		let value = value.0.try_into().map_err(|_| "value too long")?;153154		let nesting_budget = self155			.recorder156			.weight_calls_budget(<StructureWeight<T>>::find_parent());157158		<Pallet<T>>::set_token_property(159			self,160			&caller,161			TokenId(token_id),162			Property { key, value },163			&nesting_budget,164		)165		.map_err(dispatch_to_evm::<T>)166	}167168	/// @notice Set token properties value.169	/// @dev Throws error if `msg.sender` has no permission to edit the property.170	/// @param tokenId ID of the token.171	/// @param properties settable properties172	#[weight(<SelfWeightOf<T>>::set_token_properties(properties.len() as u32))]173	fn set_properties(174		&mut self,175		caller: Caller,176		token_id: U256,177		properties: Vec<eth::Property>,178	) -> Result<()> {179		let caller = T::CrossAccountId::from_eth(caller);180		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;181182		let nesting_budget = self183			.recorder184			.weight_calls_budget(<StructureWeight<T>>::find_parent());185186		let properties = properties187			.into_iter()188			.map(eth::Property::try_into)189			.collect::<Result<Vec<_>>>()?;190191		<Pallet<T>>::set_token_properties(192			self,193			&caller,194			TokenId(token_id),195			properties.into_iter(),196			false,197			&nesting_budget,198		)199		.map_err(dispatch_to_evm::<T>)200	}201202	/// @notice Delete token property value.203	/// @dev Throws error if `msg.sender` has no permission to edit the property.204	/// @param tokenId ID of the token.205	/// @param key Property key.206	#[solidity(hide)]207	#[weight(<SelfWeightOf<T>>::delete_token_properties(1))]208	fn delete_property(&mut self, token_id: U256, caller: Caller, key: String) -> Result<()> {209		let caller = T::CrossAccountId::from_eth(caller);210		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;211		let key = <Vec<u8>>::from(key)212			.try_into()213			.map_err(|_| "key too long")?;214215		let nesting_budget = self216			.recorder217			.weight_calls_budget(<StructureWeight<T>>::find_parent());218219		<Pallet<T>>::delete_token_property(self, &caller, TokenId(token_id), key, &nesting_budget)220			.map_err(dispatch_to_evm::<T>)221	}222223	/// @notice Delete token properties value.224	/// @dev Throws error if `msg.sender` has no permission to edit the property.225	/// @param tokenId ID of the token.226	/// @param keys Properties key.227	#[weight(<SelfWeightOf<T>>::delete_token_properties(keys.len() as u32))]228	fn delete_properties(229		&mut self,230		token_id: U256,231		caller: Caller,232		keys: Vec<String>,233	) -> Result<()> {234		let caller = T::CrossAccountId::from_eth(caller);235		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;236		let keys = keys237			.into_iter()238			.map(|k| Ok(<Vec<u8>>::from(k).try_into().map_err(|_| "key too long")?))239			.collect::<Result<Vec<_>>>()?;240241		let nesting_budget = self242			.recorder243			.weight_calls_budget(<StructureWeight<T>>::find_parent());244245		<Pallet<T>>::delete_token_properties(246			self,247			&caller,248			TokenId(token_id),249			keys.into_iter(),250			&nesting_budget,251		)252		.map_err(dispatch_to_evm::<T>)253	}254255	/// @notice Get token property value.256	/// @dev Throws error if key not found257	/// @param tokenId ID of the token.258	/// @param key Property key.259	/// @return Property value bytes260	fn property(&self, token_id: U256, key: String) -> Result<Bytes> {261		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;262		let key = <Vec<u8>>::from(key)263			.try_into()264			.map_err(|_| "key too long")?;265266		let props = <TokenProperties<T>>::get((self.id, token_id));267		let prop = props.get(&key).ok_or("key not found")?;268269		Ok(prop.to_vec().into())270	}271}272273#[derive(ToLog)]274pub enum ERC721Events {275	/// @dev This emits when ownership of any NFT changes by any mechanism.276	///  This event emits when NFTs are created (`from` == 0) and destroyed277	///  (`to` == 0). Exception: during contract creation, any number of NFTs278	///  may be created and assigned without emitting Transfer. At the time of279	///  any transfer, the approved address for that NFT (if any) is reset to none.280	Transfer {281		#[indexed]282		from: Address,283		#[indexed]284		to: Address,285		#[indexed]286		token_id: U256,287	},288	/// @dev This emits when the approved address for an NFT is changed or289	///  reaffirmed. The zero address indicates there is no approved address.290	///  When a Transfer event emits, this also indicates that the approved291	///  address for that NFT (if any) is reset to none.292	Approval {293		#[indexed]294		owner: Address,295		#[indexed]296		approved: Address,297		#[indexed]298		token_id: U256,299	},300	/// @dev This emits when an operator is enabled or disabled for an owner.301	///  The operator can manage all NFTs of the owner.302	#[allow(dead_code)]303	ApprovalForAll {304		#[indexed]305		owner: Address,306		#[indexed]307		operator: Address,308		approved: bool,309	},310}311312/// @title ERC-721 Non-Fungible Token Standard, optional metadata extension313/// @dev See https://eips.ethereum.org/EIPS/eip-721314#[solidity_interface(name = ERC721Metadata, expect_selector = 0x5b5e139f, enum(derive(PreDispatch)), enum_attr(weight))]315impl<T: Config> NonfungibleHandle<T>316where317	T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]>,318{319	/// @notice A descriptive name for a collection of NFTs in this contract320	/// @dev real implementation of this function lies in `ERC721UniqueExtensions`321	#[solidity(hide, rename_selector = "name")]322	fn name_proxy(&self) -> String {323		self.name()324	}325326	/// @notice An abbreviated name for NFTs in this contract327	/// @dev real implementation of this function lies in `ERC721UniqueExtensions`328	#[solidity(hide, rename_selector = "symbol")]329	fn symbol_proxy(&self) -> String {330		self.symbol()331	}332333	/// @notice A distinct Uniform Resource Identifier (URI) for a given asset.334	///335	/// @dev If the token has a `url` property and it is not empty, it is returned.336	///  Else If the collection does not have a property with key `schemaName` or its value is not equal to `ERC721Metadata`, it return an error `tokenURI not set`.337	///  If the collection property `baseURI` is empty or absent, return "" (empty string)338	///  otherwise, if token property `suffix` present and is non-empty, return concatenation of baseURI and suffix339	///  otherwise, return concatenation of `baseURI` and stringified token id (decimal stringifying, without paddings).340	///341	/// @return token's const_metadata342	#[solidity(rename_selector = "tokenURI")]343	fn token_uri(&self, token_id: U256) -> Result<String> {344		let token_id_u32: u32 = token_id.try_into().map_err(|_| "token id overflow")?;345346		match get_token_property(self, token_id_u32, &key::url()).as_deref() {347			Err(_) | Ok("") => (),348			Ok(url) => {349				return Ok(url.into());350			}351		};352353		let base_uri =354			pallet_common::Pallet::<T>::get_collection_property(self.id, &key::base_uri())355				.map(BoundedVec::into_inner)356				.map(String::from_utf8)357				.transpose()358				.map_err(|e| {359					Error::Revert(alloc::format!(360						"Can not convert value \"baseURI\" to string with error \"{}\"",361						e362					))363				})?;364365		let base_uri = match base_uri.as_deref() {366			None | Some("") => {367				return Ok("".into());368			}369			Some(base_uri) => base_uri.into(),370		};371372		Ok(373			match get_token_property(self, token_id_u32, &key::suffix()).as_deref() {374				Err(_) | Ok("") => base_uri,375				Ok(suffix) => base_uri + suffix,376			},377		)378	}379}380381/// @title ERC-721 Non-Fungible Token Standard, optional enumeration extension382/// @dev See https://eips.ethereum.org/EIPS/eip-721383#[solidity_interface(name = ERC721Enumerable, expect_selector = 0x780e9d63, enum(derive(PreDispatch)), enum_attr(weight))]384impl<T: Config> NonfungibleHandle<T> {385	/// @notice Enumerate valid NFTs386	/// @param index A counter less than `totalSupply()`387	/// @return The token identifier for the `index`th NFT,388	///  (sort order not specified)389	fn token_by_index(&self, index: U256) -> U256 {390		index391	}392393	/// @dev Not implemented394	fn token_of_owner_by_index(&self, _owner: Address, _index: U256) -> Result<U256> {395		// TODO: Not implemetable396		Err("not implemented".into())397	}398399	/// @notice Count NFTs tracked by this contract400	/// @return A count of valid NFTs tracked by this contract, where each one of401	///  them has an assigned and queryable owner not equal to the zero address402	fn total_supply(&self) -> Result<U256> {403		self.consume_store_reads(1)?;404		Ok(<Pallet<T>>::total_supply(self).into())405	}406}407408/// @title ERC-721 Non-Fungible Token Standard409/// @dev See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md410#[solidity_interface(name = ERC721, events(ERC721Events), enum(derive(PreDispatch)), enum_attr(weight), expect_selector = 0x80ac58cd)]411impl<T: Config> NonfungibleHandle<T> {412	/// @notice Count all NFTs assigned to an owner413	/// @dev NFTs assigned to the zero address are considered invalid, and this414	///  function throws for queries about the zero address.415	/// @param owner An address for whom to query the balance416	/// @return The number of NFTs owned by `owner`, possibly zero417	fn balance_of(&self, owner: Address) -> Result<U256> {418		self.consume_store_reads(1)?;419		let owner = T::CrossAccountId::from_eth(owner);420		let balance = <AccountBalance<T>>::get((self.id, owner));421		Ok(balance.into())422	}423	/// @notice Find the owner of an NFT424	/// @dev NFTs assigned to zero address are considered invalid, and queries425	///  about them do throw.426	/// @param tokenId The identifier for an NFT427	/// @return The address of the owner of the NFT428	fn owner_of(&self, token_id: U256) -> Result<Address> {429		self.consume_store_reads(1)?;430		let token: TokenId = token_id.try_into()?;431		Ok(*<TokenData<T>>::get((self.id, token))432			.ok_or("token not found")?433			.owner434			.as_eth())435	}436	/// @dev Not implemented437	#[solidity(rename_selector = "safeTransferFrom")]438	fn safe_transfer_from_with_data(439		&mut self,440		_from: Address,441		_to: Address,442		_token_id: U256,443		_data: Bytes,444	) -> Result<()> {445		// TODO: Not implemetable446		Err("not implemented".into())447	}448	/// @dev Not implemented449	fn safe_transfer_from(&mut self, _from: Address, _to: Address, _token_id: U256) -> Result<()> {450		// TODO: Not implemetable451		Err("not implemented".into())452	}453454	/// @notice Transfer ownership of an NFT -- THE CALLER IS RESPONSIBLE455	///  TO CONFIRM THAT `to` IS CAPABLE OF RECEIVING NFTS OR ELSE456	///  THEY MAY BE PERMANENTLY LOST457	/// @dev Throws unless `msg.sender` is the current owner or an authorized458	///  operator for this NFT. Throws if `from` is not the current owner. Throws459	///  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.460	/// @param from The current owner of the NFT461	/// @param to The new owner462	/// @param tokenId The NFT to transfer463	#[weight(<SelfWeightOf<T>>::transfer_from())]464	fn transfer_from(465		&mut self,466		caller: Caller,467		from: Address,468		to: Address,469		token_id: U256,470	) -> Result<()> {471		let caller = T::CrossAccountId::from_eth(caller);472		let from = T::CrossAccountId::from_eth(from);473		let to = T::CrossAccountId::from_eth(to);474		let token = token_id.try_into()?;475		let budget = self476			.recorder477			.weight_calls_budget(<StructureWeight<T>>::find_parent());478479		<Pallet<T>>::transfer_from(self, &caller, &from, &to, token, &budget)480			.map_err(dispatch_to_evm::<T>)?;481		Ok(())482	}483484	/// @notice Set or reaffirm the approved address for an NFT485	/// @dev The zero address indicates there is no approved address.486	/// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized487	///  operator of the current owner.488	/// @param approved The new approved NFT controller489	/// @param tokenId The NFT to approve490	#[weight(<SelfWeightOf<T>>::approve())]491	fn approve(&mut self, caller: Caller, approved: Address, token_id: U256) -> Result<()> {492		let caller = T::CrossAccountId::from_eth(caller);493		let approved = T::CrossAccountId::from_eth(approved);494		let token = token_id.try_into()?;495496		<Pallet<T>>::set_allowance(self, &caller, token, Some(&approved))497			.map_err(dispatch_to_evm::<T>)?;498		Ok(())499	}500501	/// @notice Sets or unsets the approval of a given operator.502	/// The `operator` is allowed to transfer all tokens of the `caller` on their behalf.503	/// @param operator Operator504	/// @param approved Should operator status be granted or revoked?505	#[weight(<SelfWeightOf<T>>::set_allowance_for_all())]506	fn set_approval_for_all(507		&mut self,508		caller: Caller,509		operator: Address,510		approved: bool,511	) -> Result<()> {512		let caller = T::CrossAccountId::from_eth(caller);513		let operator = T::CrossAccountId::from_eth(operator);514515		<Pallet<T>>::set_allowance_for_all(self, &caller, &operator, approved)516			.map_err(dispatch_to_evm::<T>)?;517		Ok(())518	}519520	/// @dev Not implemented521	fn get_approved(&self, _token_id: U256) -> Result<Address> {522		// TODO: Not implemetable523		Err("not implemented".into())524	}525526	/// @notice Tells whether the given `owner` approves the `operator`.527	#[weight(<SelfWeightOf<T>>::allowance_for_all())]528	fn is_approved_for_all(&self, owner: Address, operator: Address) -> Result<bool> {529		let owner = T::CrossAccountId::from_eth(owner);530		let operator = T::CrossAccountId::from_eth(operator);531532		Ok(<Pallet<T>>::allowance_for_all(self, &owner, &operator))533	}534}535536/// @title ERC721 Token that can be irreversibly burned (destroyed).537#[solidity_interface(name = ERC721Burnable, enum(derive(PreDispatch)), enum_attr(weight))]538impl<T: Config> NonfungibleHandle<T> {539	/// @notice Burns a specific ERC721 token.540	/// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized541	///  operator of the current owner.542	/// @param tokenId The NFT to approve543	#[weight(<SelfWeightOf<T>>::burn_item())]544	fn burn(&mut self, caller: Caller, token_id: U256) -> Result<()> {545		let caller = T::CrossAccountId::from_eth(caller);546		let token = token_id.try_into()?;547548		<Pallet<T>>::burn(self, &caller, token).map_err(dispatch_to_evm::<T>)?;549		Ok(())550	}551}552553/// @title ERC721 minting logic.554#[solidity_interface(name = ERC721UniqueMintable, enum(derive(PreDispatch)), enum_attr(weight))]555impl<T: Config> NonfungibleHandle<T> {556	/// @notice Function to mint a token.557	/// @param to The new owner558	/// @return uint256 The id of the newly minted token559	#[weight(<SelfWeightOf<T>>::create_item())]560	fn mint(&mut self, caller: Caller, to: Address) -> Result<U256> {561		let token_id: U256 = <TokensMinted<T>>::get(self.id)562			.checked_add(1)563			.ok_or("item id overflow")?564			.into();565		self.mint_check_id(caller, to, token_id)?;566		Ok(token_id)567	}568569	/// @notice Function to mint a token.570	/// @dev `tokenId` should be obtained with `nextTokenId` method,571	///  unlike standard, you can't specify it manually572	/// @param to The new owner573	/// @param tokenId ID of the minted NFT574	#[solidity(hide, rename_selector = "mint")]575	#[weight(<SelfWeightOf<T>>::create_item())]576	fn mint_check_id(&mut self, caller: Caller, to: Address, token_id: U256) -> Result<bool> {577		let caller = T::CrossAccountId::from_eth(caller);578		let to = T::CrossAccountId::from_eth(to);579		let token_id: u32 = token_id.try_into()?;580		let budget = self581			.recorder582			.weight_calls_budget(<StructureWeight<T>>::find_parent());583584		if <TokensMinted<T>>::get(self.id)585			.checked_add(1)586			.ok_or("item id overflow")?587			!= token_id588		{589			return Err("item id should be next".into());590		}591592		<Pallet<T>>::create_item(593			self,594			&caller,595			CreateItemData::<T> {596				properties: BoundedVec::default(),597				owner: to,598			},599			&budget,600		)601		.map_err(dispatch_to_evm::<T>)?;602603		Ok(true)604	}605606	/// @notice Function to mint token with the given tokenUri.607	/// @param to The new owner608	/// @param tokenUri Token URI that would be stored in the NFT properties609	/// @return uint256 The id of the newly minted token610	#[solidity(rename_selector = "mintWithTokenURI")]611	#[weight(<SelfWeightOf<T>>::create_item() + <SelfWeightOf<T>>::set_token_properties(1))]612	fn mint_with_token_uri(613		&mut self,614		caller: Caller,615		to: Address,616		token_uri: String,617	) -> Result<U256> {618		let token_id: U256 = <TokensMinted<T>>::get(self.id)619			.checked_add(1)620			.ok_or("item id overflow")?621			.into();622		self.mint_with_token_uri_check_id(caller, to, token_id, token_uri)?;623		Ok(token_id)624	}625626	/// @notice Function to mint token with the given tokenUri.627	/// @dev `tokenId` should be obtained with `nextTokenId` method,628	///  unlike standard, you can't specify it manually629	/// @param to The new owner630	/// @param tokenId ID of the minted NFT631	/// @param tokenUri Token URI that would be stored in the NFT properties632	#[solidity(hide, rename_selector = "mintWithTokenURI")]633	#[weight(<SelfWeightOf<T>>::create_item() + <SelfWeightOf<T>>::set_token_properties(1))]634	fn mint_with_token_uri_check_id(635		&mut self,636		caller: Caller,637		to: Address,638		token_id: U256,639		token_uri: String,640	) -> Result<bool> {641		let key = key::url();642		let permission = get_token_permission::<T>(self.id, &key)?;643		if !permission.collection_admin {644			return Err("Operation is not allowed".into());645		}646647		let caller = T::CrossAccountId::from_eth(caller);648		let to = T::CrossAccountId::from_eth(to);649		let token_id: u32 = token_id.try_into().map_err(|_| "amount overflow")?;650		let budget = self651			.recorder652			.weight_calls_budget(<StructureWeight<T>>::find_parent());653654		if <TokensMinted<T>>::get(self.id)655			.checked_add(1)656			.ok_or("item id overflow")?657			!= token_id658		{659			return Err("item id should be next".into());660		}661662		let mut properties = CollectionPropertiesVec::default();663		properties664			.try_push(Property {665				key,666				value: token_uri667					.into_bytes()668					.try_into()669					.map_err(|_| "token uri is too long")?,670			})671			.map_err(|e| Error::Revert(alloc::format!("Can't add property: {:?}", e)))?;672673		<Pallet<T>>::create_item(674			self,675			&caller,676			CreateItemData::<T> {677				properties,678				owner: to,679			},680			&budget,681		)682		.map_err(dispatch_to_evm::<T>)?;683		Ok(true)684	}685}686687fn get_token_property<T: Config>(688	collection: &CollectionHandle<T>,689	token_id: u32,690	key: &up_data_structs::PropertyKey,691) -> Result<String> {692	collection.consume_store_reads(1)?;693	let properties = <TokenProperties<T>>::try_get((collection.id, token_id))694		.map_err(|_| Error::Revert("Token properties not found".into()))?;695	if let Some(property) = properties.get(key) {696		return Ok(String::from_utf8_lossy(property).into());697	}698699	Err("Property tokenURI not found".into())700}701702fn get_token_permission<T: Config>(703	collection_id: CollectionId,704	key: &PropertyKey,705) -> Result<PropertyPermission> {706	let token_property_permissions = CollectionPropertyPermissions::<T>::try_get(collection_id)707		.map_err(|_| Error::Revert("No permissions for collection".into()))?;708	let a = token_property_permissions709		.get(key)710		.map(Clone::clone)711		.ok_or_else(|| {712			let key = String::from_utf8(key.clone().into_inner()).unwrap_or_default();713			Error::Revert(alloc::format!("No permission for key {}", key))714		})?;715	Ok(a)716}717718/// @title Unique extensions for ERC721.719#[solidity_interface(name = ERC721UniqueExtensions, enum(derive(PreDispatch)), enum_attr(weight))]720impl<T: Config> NonfungibleHandle<T>721where722	T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]>,723{724	/// @notice A descriptive name for a collection of NFTs in this contract725	fn name(&self) -> String {726		decode_utf16(self.name.iter().copied())727			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))728			.collect::<String>()729	}730731	/// @notice An abbreviated name for NFTs in this contract732	fn symbol(&self) -> String {733		String::from_utf8_lossy(&self.token_prefix).into()734	}735736	/// @notice A description for the collection.737	fn description(&self) -> String {738		decode_utf16(self.description.iter().copied())739			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))740			.collect::<String>()741	}742743	/// Returns the owner (in cross format) of the token.744	///745	/// @param tokenId Id for the token.746	fn cross_owner_of(&self, token_id: U256) -> Result<eth::CrossAddress> {747		Self::token_owner(&self, token_id.try_into()?)748			.map(|o| eth::CrossAddress::from_sub_cross_account::<T>(&o))749			.map_err(|_| Error::Revert("token not found".into()))750	}751752	/// Returns the token properties.753	///754	/// @param tokenId Id for the token.755	/// @param keys Properties keys. Empty keys for all propertyes.756	/// @return Vector of properties key/value pairs.757	fn properties(&self, token_id: U256, keys: Vec<String>) -> Result<Vec<eth::Property>> {758		let keys = keys759			.into_iter()760			.map(|key| {761				<Vec<u8>>::from(key)762					.try_into()763					.map_err(|_| Error::Revert("key too large".into()))764			})765			.collect::<Result<Vec<_>>>()?;766767		<Self as CommonCollectionOperations<T>>::token_properties(768			&self,769			token_id.try_into()?,770			if keys.is_empty() { None } else { Some(keys) },771		)772		.into_iter()773		.map(eth::Property::try_from)774		.collect::<Result<Vec<_>>>()775	}776777	/// @notice Set or reaffirm the approved address for an NFT778	/// @dev The zero address indicates there is no approved address.779	/// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized780	///  operator of the current owner.781	/// @param approved The new substrate address approved NFT controller782	/// @param tokenId The NFT to approve783	#[weight(<SelfWeightOf<T>>::approve())]784	fn approve_cross(785		&mut self,786		caller: Caller,787		approved: eth::CrossAddress,788		token_id: U256,789	) -> Result<()> {790		let caller = T::CrossAccountId::from_eth(caller);791		let approved = approved.into_sub_cross_account::<T>()?;792		let token = token_id.try_into()?;793794		<Pallet<T>>::set_allowance(self, &caller, token, Some(&approved))795			.map_err(dispatch_to_evm::<T>)?;796		Ok(())797	}798799	/// @notice Transfer ownership of an NFT800	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`801	///  is the zero address. Throws if `tokenId` is not a valid NFT.802	/// @param to The new owner803	/// @param tokenId The NFT to transfer804	#[weight(<SelfWeightOf<T>>::transfer())]805	fn transfer(&mut self, caller: Caller, to: Address, token_id: U256) -> Result<()> {806		let caller = T::CrossAccountId::from_eth(caller);807		let to = T::CrossAccountId::from_eth(to);808		let token = token_id.try_into()?;809		let budget = self810			.recorder811			.weight_calls_budget(<StructureWeight<T>>::find_parent());812813		<Pallet<T>>::transfer(self, &caller, &to, token, &budget).map_err(dispatch_to_evm::<T>)?;814		Ok(())815	}816817	/// @notice Transfer ownership of an NFT818	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`819	///  is the zero address. Throws if `tokenId` is not a valid NFT.820	/// @param to The new owner821	/// @param tokenId The NFT to transfer822	#[weight(<SelfWeightOf<T>>::transfer())]823	fn transfer_cross(824		&mut self,825		caller: Caller,826		to: eth::CrossAddress,827		token_id: U256,828	) -> Result<()> {829		let caller = T::CrossAccountId::from_eth(caller);830		let to = to.into_sub_cross_account::<T>()?;831		let token = token_id.try_into()?;832		let budget = self833			.recorder834			.weight_calls_budget(<StructureWeight<T>>::find_parent());835836		<Pallet<T>>::transfer(self, &caller, &to, token, &budget).map_err(dispatch_to_evm::<T>)?;837		Ok(())838	}839840	/// @notice Transfer ownership of an NFT from cross account address to cross account address841	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`842	///  is the zero address. Throws if `tokenId` is not a valid NFT.843	/// @param from Cross acccount address of current owner844	/// @param to Cross acccount address of new owner845	/// @param tokenId The NFT to transfer846	#[weight(<SelfWeightOf<T>>::transfer())]847	fn transfer_from_cross(848		&mut self,849		caller: Caller,850		from: eth::CrossAddress,851		to: eth::CrossAddress,852		token_id: U256,853	) -> Result<()> {854		let caller = T::CrossAccountId::from_eth(caller);855		let from = from.into_sub_cross_account::<T>()?;856		let to = to.into_sub_cross_account::<T>()?;857		let token_id = token_id.try_into()?;858		let budget = self859			.recorder860			.weight_calls_budget(<StructureWeight<T>>::find_parent());861		Pallet::<T>::transfer_from(self, &caller, &from, &to, token_id, &budget)862			.map_err(dispatch_to_evm::<T>)?;863		Ok(())864	}865866	/// @notice Burns a specific ERC721 token.867	/// @dev Throws unless `msg.sender` is the current owner or an authorized868	///  operator for this NFT. Throws if `from` is not the current owner. Throws869	///  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.870	/// @param from The current owner of the NFT871	/// @param tokenId The NFT to transfer872	#[solidity(hide)]873	#[weight(<SelfWeightOf<T>>::burn_from())]874	fn burn_from(&mut self, caller: Caller, from: Address, token_id: U256) -> Result<()> {875		let caller = T::CrossAccountId::from_eth(caller);876		let from = T::CrossAccountId::from_eth(from);877		let token = token_id.try_into()?;878		let budget = self879			.recorder880			.weight_calls_budget(<StructureWeight<T>>::find_parent());881882		<Pallet<T>>::burn_from(self, &caller, &from, token, &budget)883			.map_err(dispatch_to_evm::<T>)?;884		Ok(())885	}886887	/// @notice Burns a specific ERC721 token.888	/// @dev Throws unless `msg.sender` is the current owner or an authorized889	///  operator for this NFT. Throws if `from` is not the current owner. Throws890	///  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.891	/// @param from The current owner of the NFT892	/// @param tokenId The NFT to transfer893	#[weight(<SelfWeightOf<T>>::burn_from())]894	fn burn_from_cross(895		&mut self,896		caller: Caller,897		from: eth::CrossAddress,898		token_id: U256,899	) -> Result<()> {900		let caller = T::CrossAccountId::from_eth(caller);901		let from = from.into_sub_cross_account::<T>()?;902		let token = token_id.try_into()?;903		let budget = self904			.recorder905			.weight_calls_budget(<StructureWeight<T>>::find_parent());906907		<Pallet<T>>::burn_from(self, &caller, &from, token, &budget)908			.map_err(dispatch_to_evm::<T>)?;909		Ok(())910	}911912	/// @notice Returns next free NFT ID.913	fn next_token_id(&self) -> Result<U256> {914		self.consume_store_reads(1)?;915		Ok(<TokensMinted<T>>::get(self.id)916			.checked_add(1)917			.ok_or("item id overflow")?918			.into())919	}920921	/// @notice Function to mint multiple tokens.922	/// @dev `tokenIds` should be an array of consecutive numbers and first number923	///  should be obtained with `nextTokenId` method924	/// @param to The new owner925	/// @param tokenIds IDs of the minted NFTs926	#[solidity(hide)]927	#[weight(<SelfWeightOf<T>>::create_multiple_items(token_ids.len() as u32))]928	fn mint_bulk(&mut self, caller: Caller, to: Address, token_ids: Vec<U256>) -> Result<bool> {929		let caller = T::CrossAccountId::from_eth(caller);930		let to = T::CrossAccountId::from_eth(to);931		let mut expected_index = <TokensMinted<T>>::get(self.id)932			.checked_add(1)933			.ok_or("item id overflow")?;934		let budget = self935			.recorder936			.weight_calls_budget(<StructureWeight<T>>::find_parent());937938		let total_tokens = token_ids.len();939		for id in token_ids.into_iter() {940			let id: u32 = id.try_into().map_err(|_| "token id overflow")?;941			if id != expected_index {942				return Err("item id should be next".into());943			}944			expected_index = expected_index.checked_add(1).ok_or("item id overflow")?;945		}946		let data = (0..total_tokens)947			.map(|_| CreateItemData::<T> {948				properties: BoundedVec::default(),949				owner: to.clone(),950			})951			.collect();952953		<Pallet<T>>::create_multiple_items(self, &caller, data, &budget)954			.map_err(dispatch_to_evm::<T>)?;955		Ok(true)956	}957958	/// @notice Function to mint multiple tokens with the given tokenUris.959	/// @dev `tokenIds` is array of pairs of token ID and token URI. Token IDs should be consecutive960	///  numbers and first number should be obtained with `nextTokenId` method961	/// @param to The new owner962	/// @param tokens array of pairs of token ID and token URI for minted tokens963	#[solidity(hide, rename_selector = "mintBulkWithTokenURI")]964	#[weight(<SelfWeightOf<T>>::create_multiple_items(tokens.len() as u32)  + <SelfWeightOf<T>>::set_token_properties(tokens.len() as u32))]965	fn mint_bulk_with_token_uri(966		&mut self,967		caller: Caller,968		to: Address,969		tokens: Vec<TokenUri>,970	) -> Result<bool> {971		let key = key::url();972		let caller = T::CrossAccountId::from_eth(caller);973		let to = T::CrossAccountId::from_eth(to);974		let mut expected_index = <TokensMinted<T>>::get(self.id)975			.checked_add(1)976			.ok_or("item id overflow")?;977		let budget = self978			.recorder979			.weight_calls_budget(<StructureWeight<T>>::find_parent());980981		let mut data = Vec::with_capacity(tokens.len());982		for TokenUri { id, uri } in tokens {983			let id: u32 = id.try_into().map_err(|_| "token id overflow")?;984			if id != expected_index {985				return Err("item id should be next".into());986			}987			expected_index = expected_index.checked_add(1).ok_or("item id overflow")?;988989			let mut properties = CollectionPropertiesVec::default();990			properties991				.try_push(Property {992					key: key.clone(),993					value: uri994						.into_bytes()995						.try_into()996						.map_err(|_| "token uri is too long")?,997				})998				.map_err(|e| Error::Revert(alloc::format!("Can't add property: {:?}", e)))?;9991000			data.push(CreateItemData::<T> {1001				properties,1002				owner: to.clone(),1003			});1004		}10051006		<Pallet<T>>::create_multiple_items(self, &caller, data, &budget)1007			.map_err(dispatch_to_evm::<T>)?;1008		Ok(true)1009	}10101011	/// @notice Function to mint a token.1012	/// @param to The new owner crossAccountId1013	/// @param properties Properties of minted token1014	/// @return uint256 The id of the newly minted token1015	#[weight(<SelfWeightOf<T>>::create_item() + <SelfWeightOf<T>>::set_token_properties(properties.len() as u32))]1016	fn mint_cross(1017		&mut self,1018		caller: Caller,1019		to: eth::CrossAddress,1020		properties: Vec<eth::Property>,1021	) -> Result<U256> {1022		let token_id = <TokensMinted<T>>::get(self.id)1023			.checked_add(1)1024			.ok_or("item id overflow")?;10251026		let to = to.into_sub_cross_account::<T>()?;10271028		let properties = properties1029			.into_iter()1030			.map(eth::Property::try_into)1031			.collect::<Result<Vec<_>>>()?1032			.try_into()1033			.map_err(|_| Error::Revert(alloc::format!("too many properties")))?;10341035		let caller = T::CrossAccountId::from_eth(caller);10361037		let budget = self1038			.recorder1039			.weight_calls_budget(<StructureWeight<T>>::find_parent());10401041		<Pallet<T>>::create_item(1042			self,1043			&caller,1044			CreateItemData::<T> {1045				properties,1046				owner: to,1047			},1048			&budget,1049		)1050		.map_err(dispatch_to_evm::<T>)?;10511052		Ok(token_id.into())1053	}10541055	/// @notice Returns collection helper contract address1056	fn collection_helper_address(&self) -> Address {1057		T::ContractAddress::get()1058	}1059}10601061#[solidity_interface(1062	name = UniqueNFT,1063	is(1064		ERC721,1065		ERC721Enumerable,1066		ERC721UniqueExtensions,1067		ERC721UniqueMintable,1068		ERC721Burnable,1069		ERC721Metadata(if(this.flags.erc721metadata)),1070		Collection(via(common_mut returns CollectionHandle<T>)),1071		TokenProperties,1072	),1073	enum(derive(PreDispatch)),1074)]1075impl<T: Config> NonfungibleHandle<T> where T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]> {}10761077// Not a tests, but code generators1078generate_stubgen!(gen_impl, UniqueNFTCall<()>, true);1079generate_stubgen!(gen_iface, UniqueNFTCall<()>, false);10801081impl<T: Config> CommonEvmHandler for NonfungibleHandle<T>1082where1083	T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]>,1084{1085	const CODE: &'static [u8] = include_bytes!("./stubs/UniqueNFT.raw");10861087	fn call(self, handle: &mut impl PrecompileHandle) -> Option<PrecompileResult> {1088		call::<T, UniqueNFTCall<T>, _, _>(handle, self)1089	}1090}