git.delta.rocks / unique-network / refs/commits / 90ad566cc7e8

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;2324use alloc::string::ToString;25use core::{26	char::{decode_utf16, REPLACEMENT_CHARACTER},27	convert::TryInto,28};2930use evm_coder::{abi::AbiType, generate_stubgen, solidity_interface, types::*, AbiCoder, ToLog};31use frame_support::BoundedVec;32use pallet_common::{33	erc::{static_property::key, CollectionCall, CommonEvmHandler, PrecompileResult},34	eth::{self, TokenUri},35	CollectionHandle, CollectionPropertyPermissions, CommonCollectionOperations, CommonWeightInfo,36};37use pallet_evm::{account::CrossAccountId, PrecompileHandle};38use pallet_evm_coder_substrate::{39	call, dispatch_to_evm,40	execution::{Error, PreDispatch, Result},41	frontier_contract,42};43use pallet_structure::{weights::WeightInfo as _, SelfWeightOf as StructureWeight};44use sp_core::{Get, U256};45use sp_std::{vec, vec::Vec};46use up_data_structs::{47	CollectionId, CollectionPropertiesVec, Property, PropertyKey, PropertyKeyPermission,48	PropertyPermission, TokenId,49};5051use crate::{52	common::CommonWeights, weights::WeightInfo, AccountBalance, Config, CreateItemData,53	NonfungibleHandle, Pallet, SelfWeightOf, TokenData, TokenProperties, TokensMinted,54};5556/// Nft events.57#[derive(ToLog)]58pub enum ERC721TokenEvent {59	/// The token has been changed.60	TokenChanged {61		/// Token ID.62		#[indexed]63		token_id: U256,64	},65}6667/// Token minting parameters68#[derive(AbiCoder, Default, Debug)]69pub struct MintTokenData {70	/// Minted token owner71	pub owner: eth::CrossAddress,72	/// Minted token properties73	pub properties: Vec<eth::Property>,74}7576frontier_contract! {77	macro_rules! NonfungibleHandle_result {...}78	impl<T: Config> Contract for NonfungibleHandle<T> {...}79}8081/// @title A contract that allows to set and delete token properties and change token property permissions.82#[solidity_interface(name = TokenProperties, events(ERC721TokenEvent), enum(derive(PreDispatch)), enum_attr(weight))]83impl<T: Config> NonfungibleHandle<T> {84	/// @notice Set permissions for token property.85	/// @dev Throws error if `msg.sender` is not admin or owner of the collection.86	/// @param key Property key.87	/// @param isMutable Permission to mutate property.88	/// @param collectionAdmin Permission to mutate property by collection admin if property is mutable.89	/// @param tokenOwner Permission to mutate property by token owner if property is mutable.90	#[solidity(hide)]91	#[weight(<SelfWeightOf<T>>::set_token_property_permissions(1))]92	fn set_token_property_permission(93		&mut self,94		caller: Caller,95		key: String,96		is_mutable: bool,97		collection_admin: bool,98		token_owner: bool,99	) -> Result<()> {100		let caller = T::CrossAccountId::from_eth(caller);101		<Pallet<T>>::set_token_property_permissions(102			self,103			&caller,104			vec![PropertyKeyPermission {105				key: <Vec<u8>>::from(key)106					.try_into()107					.map_err(|_| "too long key")?,108				permission: PropertyPermission {109					mutable: is_mutable,110					collection_admin,111					token_owner,112				},113			}],114		)115		.map_err(dispatch_to_evm::<T>)116	}117118	/// @notice Set permissions for token property.119	/// @dev Throws error if `msg.sender` is not admin or owner of the collection.120	/// @param permissions Permissions for keys.121	#[weight(<SelfWeightOf<T>>::set_token_property_permissions(permissions.len() as u32))]122	fn set_token_property_permissions(123		&mut self,124		caller: Caller,125		permissions: Vec<eth::TokenPropertyPermission>,126	) -> Result<()> {127		let caller = T::CrossAccountId::from_eth(caller);128		let perms = eth::TokenPropertyPermission::into_property_key_permissions(permissions)?;129130		<Pallet<T>>::set_token_property_permissions(self, &caller, perms)131			.map_err(dispatch_to_evm::<T>)132	}133134	/// @notice Get permissions for token properties.135	fn token_property_permissions(&self) -> Result<Vec<eth::TokenPropertyPermission>> {136		let perms = <Pallet<T>>::token_property_permission(self.id);137		Ok(perms138			.into_iter()139			.map(eth::TokenPropertyPermission::from)140			.collect())141	}142143	/// @notice Set token property value.144	/// @dev Throws error if `msg.sender` has no permission to edit the property.145	/// @param tokenId ID of the token.146	/// @param key Property key.147	/// @param value Property value.148	#[solidity(hide)]149	#[weight(<SelfWeightOf<T>>::set_token_properties(1))]150	fn set_property(151		&mut self,152		caller: Caller,153		token_id: U256,154		key: String,155		value: Bytes,156	) -> Result<()> {157		let caller = T::CrossAccountId::from_eth(caller);158		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;159		let key = <Vec<u8>>::from(key)160			.try_into()161			.map_err(|_| "key too long")?;162		let value = value.0.try_into().map_err(|_| "value too long")?;163164		let nesting_budget = self165			.recorder166			.weight_calls_budget(<StructureWeight<T>>::find_parent());167168		<Pallet<T>>::set_token_property(169			self,170			&caller,171			TokenId(token_id),172			Property { key, value },173			&nesting_budget,174		)175		.map_err(dispatch_to_evm::<T>)176	}177178	/// @notice Set token properties value.179	/// @dev Throws error if `msg.sender` has no permission to edit the property.180	/// @param tokenId ID of the token.181	/// @param properties settable properties182	#[weight(<SelfWeightOf<T>>::set_token_properties(properties.len() as u32))]183	fn set_properties(184		&mut self,185		caller: Caller,186		token_id: U256,187		properties: Vec<eth::Property>,188	) -> Result<()> {189		let caller = T::CrossAccountId::from_eth(caller);190		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;191192		let nesting_budget = self193			.recorder194			.weight_calls_budget(<StructureWeight<T>>::find_parent());195196		let properties = properties197			.into_iter()198			.map(eth::Property::try_into)199			.collect::<Result<Vec<_>>>()?;200201		<Pallet<T>>::set_token_properties(202			self,203			&caller,204			TokenId(token_id),205			properties.into_iter(),206			&nesting_budget,207		)208		.map_err(dispatch_to_evm::<T>)209	}210211	/// @notice Delete token property value.212	/// @dev Throws error if `msg.sender` has no permission to edit the property.213	/// @param tokenId ID of the token.214	/// @param key Property key.215	#[solidity(hide)]216	#[weight(<SelfWeightOf<T>>::delete_token_properties(1))]217	fn delete_property(&mut self, token_id: U256, caller: Caller, key: String) -> Result<()> {218		let caller = T::CrossAccountId::from_eth(caller);219		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;220		let key = <Vec<u8>>::from(key)221			.try_into()222			.map_err(|_| "key too long")?;223224		let nesting_budget = self225			.recorder226			.weight_calls_budget(<StructureWeight<T>>::find_parent());227228		<Pallet<T>>::delete_token_property(self, &caller, TokenId(token_id), key, &nesting_budget)229			.map_err(dispatch_to_evm::<T>)230	}231232	/// @notice Delete token properties value.233	/// @dev Throws error if `msg.sender` has no permission to edit the property.234	/// @param tokenId ID of the token.235	/// @param keys Properties key.236	#[weight(<SelfWeightOf<T>>::delete_token_properties(keys.len() as u32))]237	fn delete_properties(238		&mut self,239		token_id: U256,240		caller: Caller,241		keys: Vec<String>,242	) -> Result<()> {243		let caller = T::CrossAccountId::from_eth(caller);244		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;245		let keys = keys246			.into_iter()247			.map(|k| Ok(<Vec<u8>>::from(k).try_into().map_err(|_| "key too long")?))248			.collect::<Result<Vec<_>>>()?;249250		let nesting_budget = self251			.recorder252			.weight_calls_budget(<StructureWeight<T>>::find_parent());253254		<Pallet<T>>::delete_token_properties(255			self,256			&caller,257			TokenId(token_id),258			keys.into_iter(),259			&nesting_budget,260		)261		.map_err(dispatch_to_evm::<T>)262	}263264	/// @notice Get token property value.265	/// @dev Throws error if key not found266	/// @param tokenId ID of the token.267	/// @param key Property key.268	/// @return Property value bytes269	fn property(&self, token_id: U256, key: String) -> Result<Bytes> {270		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;271		let key = <Vec<u8>>::from(key)272			.try_into()273			.map_err(|_| "key too long")?;274275		let props =276			<TokenProperties<T>>::get((self.id, token_id)).ok_or("token properties not found")?;277		let prop = props.get(&key).ok_or("key not found")?;278279		Ok(prop.to_vec().into())280	}281}282283#[derive(ToLog)]284pub enum ERC721Events {285	/// @dev This emits when ownership of any NFT changes by any mechanism.286	///  This event emits when NFTs are created (`from` == 0) and destroyed287	///  (`to` == 0). Exception: during contract creation, any number of NFTs288	///  may be created and assigned without emitting Transfer. At the time of289	///  any transfer, the approved address for that NFT (if any) is reset to none.290	Transfer {291		#[indexed]292		from: Address,293		#[indexed]294		to: Address,295		#[indexed]296		token_id: U256,297	},298	/// @dev This emits when the approved address for an NFT is changed or299	///  reaffirmed. The zero address indicates there is no approved address.300	///  When a Transfer event emits, this also indicates that the approved301	///  address for that NFT (if any) is reset to none.302	Approval {303		#[indexed]304		owner: Address,305		#[indexed]306		approved: Address,307		#[indexed]308		token_id: U256,309	},310	/// @dev This emits when an operator is enabled or disabled for an owner.311	///  The operator can manage all NFTs of the owner.312	#[allow(dead_code)]313	ApprovalForAll {314		#[indexed]315		owner: Address,316		#[indexed]317		operator: Address,318		approved: bool,319	},320}321322/// @title ERC-721 Non-Fungible Token Standard, optional metadata extension323/// @dev See https://eips.ethereum.org/EIPS/eip-721324#[solidity_interface(name = ERC721Metadata, expect_selector = 0x5b5e139f, enum(derive(PreDispatch)), enum_attr(weight))]325impl<T: Config> NonfungibleHandle<T>326where327	T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]>,328{329	/// @notice A descriptive name for a collection of NFTs in this contract330	/// @dev real implementation of this function lies in `ERC721UniqueExtensions`331	#[solidity(hide, rename_selector = "name")]332	fn name_proxy(&self) -> String {333		self.name()334	}335336	/// @notice An abbreviated name for NFTs in this contract337	/// @dev real implementation of this function lies in `ERC721UniqueExtensions`338	#[solidity(hide, rename_selector = "symbol")]339	fn symbol_proxy(&self) -> String {340		self.symbol()341	}342343	/// @notice A distinct Uniform Resource Identifier (URI) for a given asset.344	///345	/// @dev If the token has a `url` property and it is not empty, it is returned.346	///  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`.347	///  If the collection property `baseURI` is empty or absent, return "" (empty string)348	///  otherwise, if token property `suffix` present and is non-empty, return concatenation of baseURI and suffix349	///  otherwise, return concatenation of `baseURI` and stringified token id (decimal stringifying, without paddings).350	///351	/// @return token's const_metadata352	#[solidity(rename_selector = "tokenURI")]353	fn token_uri(&self, token_id: U256) -> Result<String> {354		let token_id_u32: u32 = token_id.try_into().map_err(|_| "token id overflow")?;355356		match get_token_property(self, token_id_u32, &key::url()).as_deref() {357			Err(_) | Ok("") => (),358			Ok(url) => {359				return Ok(url.into());360			}361		};362363		let base_uri =364			pallet_common::Pallet::<T>::get_collection_property(self.id, &key::base_uri())365				.map(BoundedVec::into_inner)366				.map(String::from_utf8)367				.transpose()368				.map_err(|e| {369					Error::Revert(alloc::format!(370						"can not convert value \"baseURI\" to string with error \"{e}\""371					))372				})?;373374		let base_uri = match base_uri.as_deref() {375			None | Some("") => {376				return Ok("".into());377			}378			Some(base_uri) => base_uri.into(),379		};380381		Ok(382			match get_token_property(self, token_id_u32, &key::suffix()).as_deref() {383				Err(_) | Ok("") => base_uri,384				Ok(suffix) => base_uri + suffix,385			},386		)387	}388}389390/// @title ERC-721 Non-Fungible Token Standard, optional enumeration extension391/// @dev See https://eips.ethereum.org/EIPS/eip-721392#[solidity_interface(name = ERC721Enumerable, expect_selector = 0x780e9d63, enum(derive(PreDispatch)), enum_attr(weight))]393impl<T: Config> NonfungibleHandle<T> {394	/// @notice Enumerate valid NFTs395	/// @param index A counter less than `totalSupply()`396	/// @return The token identifier for the `index`th NFT,397	///  (sort order not specified)398	fn token_by_index(&self, index: U256) -> U256 {399		index400	}401402	/// @dev Not implemented403	fn token_of_owner_by_index(&self, _owner: Address, _index: U256) -> Result<U256> {404		// TODO: Not implemetable405		Err("not implemented".into())406	}407408	/// @notice Count NFTs tracked by this contract409	/// @return A count of valid NFTs tracked by this contract, where each one of410	///  them has an assigned and queryable owner not equal to the zero address411	fn total_supply(&self) -> Result<U256> {412		self.consume_store_reads(1)?;413		Ok(<Pallet<T>>::total_supply(self).into())414	}415}416417/// @title ERC-721 Non-Fungible Token Standard418/// @dev See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md419#[solidity_interface(name = ERC721, events(ERC721Events), enum(derive(PreDispatch)), enum_attr(weight), expect_selector = 0x80ac58cd)]420impl<T: Config> NonfungibleHandle<T> {421	/// @notice Count all NFTs assigned to an owner422	/// @dev NFTs assigned to the zero address are considered invalid, and this423	///  function throws for queries about the zero address.424	/// @param owner An address for whom to query the balance425	/// @return The number of NFTs owned by `owner`, possibly zero426	fn balance_of(&self, owner: Address) -> Result<U256> {427		self.consume_store_reads(1)?;428		let owner = T::CrossAccountId::from_eth(owner);429		let balance = <AccountBalance<T>>::get((self.id, owner));430		Ok(balance.into())431	}432	/// @notice Find the owner of an NFT433	/// @dev NFTs assigned to zero address are considered invalid, and queries434	///  about them do throw.435	/// @param tokenId The identifier for an NFT436	/// @return The address of the owner of the NFT437	fn owner_of(&self, token_id: U256) -> Result<Address> {438		self.consume_store_reads(1)?;439		let token: TokenId = token_id.try_into()?;440		Ok(*<TokenData<T>>::get((self.id, token))441			.ok_or("token not found")?442			.owner443			.as_eth())444	}445	/// @dev Not implemented446	#[solidity(rename_selector = "safeTransferFrom")]447	fn safe_transfer_from_with_data(448		&mut self,449		_from: Address,450		_to: Address,451		_token_id: U256,452		_data: Bytes,453	) -> Result<()> {454		// TODO: Not implemetable455		Err("not implemented".into())456	}457	/// @dev Not implemented458	fn safe_transfer_from(&mut self, _from: Address, _to: Address, _token_id: U256) -> Result<()> {459		// TODO: Not implemetable460		Err("not implemented".into())461	}462463	/// @notice Transfer ownership of an NFT -- THE CALLER IS RESPONSIBLE464	///  TO CONFIRM THAT `to` IS CAPABLE OF RECEIVING NFTS OR ELSE465	///  THEY MAY BE PERMANENTLY LOST466	/// @dev Throws unless `msg.sender` is the current owner or an authorized467	///  operator for this NFT. Throws if `from` is not the current owner. Throws468	///  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.469	/// @param from The current owner of the NFT470	/// @param to The new owner471	/// @param tokenId The NFT to transfer472	#[weight(<CommonWeights<T>>::transfer_from())]473	fn transfer_from(474		&mut self,475		caller: Caller,476		from: Address,477		to: Address,478		token_id: U256,479	) -> Result<()> {480		let caller = T::CrossAccountId::from_eth(caller);481		let from = T::CrossAccountId::from_eth(from);482		let to = T::CrossAccountId::from_eth(to);483		let token = token_id.try_into()?;484		let budget = self485			.recorder486			.weight_calls_budget(<StructureWeight<T>>::find_parent());487488		<Pallet<T>>::transfer_from(self, &caller, &from, &to, token, &budget)489			.map_err(|e| dispatch_to_evm::<T>(e.error))?;490		Ok(())491	}492493	/// @notice Set or reaffirm the approved address for an NFT494	/// @dev The zero address indicates there is no approved address.495	/// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized496	///  operator of the current owner.497	/// @param approved The new approved NFT controller498	/// @param tokenId The NFT to approve499	#[weight(<SelfWeightOf<T>>::approve())]500	fn approve(&mut self, caller: Caller, approved: Address, token_id: U256) -> Result<()> {501		let caller = T::CrossAccountId::from_eth(caller);502		let approved = T::CrossAccountId::from_eth(approved);503		let token = token_id.try_into()?;504505		<Pallet<T>>::set_allowance(self, &caller, token, Some(&approved))506			.map_err(dispatch_to_evm::<T>)?;507		Ok(())508	}509510	/// @notice Sets or unsets the approval of a given operator.511	/// The `operator` is allowed to transfer all tokens of the `caller` on their behalf.512	/// @param operator Operator513	/// @param approved Should operator status be granted or revoked?514	#[weight(<SelfWeightOf<T>>::set_allowance_for_all())]515	fn set_approval_for_all(516		&mut self,517		caller: Caller,518		operator: Address,519		approved: bool,520	) -> Result<()> {521		let caller = T::CrossAccountId::from_eth(caller);522		let operator = T::CrossAccountId::from_eth(operator);523524		<Pallet<T>>::set_allowance_for_all(self, &caller, &operator, approved)525			.map_err(dispatch_to_evm::<T>)?;526		Ok(())527	}528529	/// @notice Get the approved address for a single NFT530	/// @dev Throws if `tokenId` is not a valid NFT531	/// @param tokenId The NFT to find the approved address for532	/// @return The approved address for this NFT, or the zero address if there is none533	fn get_approved(&self, token_id: U256) -> Result<Address> {534		let token_id = token_id.try_into()?;535		let operator = <Pallet<T>>::get_allowance(self, token_id).map_err(dispatch_to_evm::<T>)?;536		Ok(if let Some(operator) = operator {537			*operator.as_eth()538		} else {539			Address::zero()540		})541	}542543	/// @notice Tells whether the given `owner` approves the `operator`.544	#[weight(<SelfWeightOf<T>>::allowance_for_all())]545	fn is_approved_for_all(&self, owner: Address, operator: Address) -> Result<bool> {546		let owner = T::CrossAccountId::from_eth(owner);547		let operator = T::CrossAccountId::from_eth(operator);548549		Ok(<Pallet<T>>::allowance_for_all(self, &owner, &operator))550	}551}552553/// @title ERC721 Token that can be irreversibly burned (destroyed).554#[solidity_interface(name = ERC721Burnable, enum(derive(PreDispatch)), enum_attr(weight))]555impl<T: Config> NonfungibleHandle<T> {556	/// @notice Burns a specific ERC721 token.557	/// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized558	///  operator of the current owner.559	/// @param tokenId The NFT to approve560	#[weight(<SelfWeightOf<T>>::burn_item())]561	fn burn(&mut self, caller: Caller, token_id: U256) -> Result<()> {562		let caller = T::CrossAccountId::from_eth(caller);563		let token = token_id.try_into()?;564565		<Pallet<T>>::burn(self, &caller, token).map_err(dispatch_to_evm::<T>)?;566		Ok(())567	}568}569570/// @title ERC721 minting logic.571#[solidity_interface(name = ERC721UniqueMintable, enum(derive(PreDispatch)), enum_attr(weight))]572impl<T: Config> NonfungibleHandle<T> {573	/// @notice Function to mint a token.574	/// @param to The new owner575	/// @return uint256 The id of the newly minted token576	#[weight(<SelfWeightOf<T>>::create_item())]577	fn mint(&mut self, caller: Caller, to: Address) -> Result<U256> {578		let token_id: U256 = <TokensMinted<T>>::get(self.id)579			.checked_add(1)580			.ok_or("item id overflow")?581			.into();582		self.mint_check_id(caller, to, token_id)?;583		Ok(token_id)584	}585586	/// @notice Function to mint a token.587	/// @dev `tokenId` should be obtained with `nextTokenId` method,588	///  unlike standard, you can't specify it manually589	/// @param to The new owner590	/// @param tokenId ID of the minted NFT591	#[solidity(hide, rename_selector = "mint")]592	#[weight(<SelfWeightOf<T>>::create_item())]593	fn mint_check_id(&mut self, caller: Caller, to: Address, token_id: U256) -> Result<bool> {594		let caller = T::CrossAccountId::from_eth(caller);595		let to = T::CrossAccountId::from_eth(to);596		let token_id: u32 = token_id.try_into()?;597		let budget = self598			.recorder599			.weight_calls_budget(<StructureWeight<T>>::find_parent());600601		if <TokensMinted<T>>::get(self.id)602			.checked_add(1)603			.ok_or("item id overflow")?604			!= token_id605		{606			return Err("item id should be next".into());607		}608609		<Pallet<T>>::create_item(610			self,611			&caller,612			CreateItemData::<T> {613				properties: BoundedVec::default(),614				owner: to,615			},616			&budget,617		)618		.map_err(dispatch_to_evm::<T>)?;619620		Ok(true)621	}622623	/// @notice Function to mint token with the given tokenUri.624	/// @param to The new owner625	/// @param tokenUri Token URI that would be stored in the NFT properties626	/// @return uint256 The id of the newly minted token627	#[solidity(rename_selector = "mintWithTokenURI")]628	#[weight(<SelfWeightOf<T>>::create_item() + <SelfWeightOf<T>>::set_token_properties(1))]629	fn mint_with_token_uri(630		&mut self,631		caller: Caller,632		to: Address,633		token_uri: String,634	) -> Result<U256> {635		let token_id: U256 = <TokensMinted<T>>::get(self.id)636			.checked_add(1)637			.ok_or("item id overflow")?638			.into();639		self.mint_with_token_uri_check_id(caller, to, token_id, token_uri)?;640		Ok(token_id)641	}642643	/// @notice Function to mint token with the given tokenUri.644	/// @dev `tokenId` should be obtained with `nextTokenId` method,645	///  unlike standard, you can't specify it manually646	/// @param to The new owner647	/// @param tokenId ID of the minted NFT648	/// @param tokenUri Token URI that would be stored in the NFT properties649	#[solidity(hide, rename_selector = "mintWithTokenURI")]650	#[weight(<SelfWeightOf<T>>::create_item() + <SelfWeightOf<T>>::set_token_properties(1))]651	fn mint_with_token_uri_check_id(652		&mut self,653		caller: Caller,654		to: Address,655		token_id: U256,656		token_uri: String,657	) -> Result<bool> {658		let key = key::url();659		let permission = get_token_permission::<T>(self.id, &key)?;660		if !permission.collection_admin {661			return Err("operation is not allowed".into());662		}663664		let caller = T::CrossAccountId::from_eth(caller);665		let to = T::CrossAccountId::from_eth(to);666		let token_id: u32 = token_id.try_into().map_err(|_| "amount overflow")?;667		let budget = self668			.recorder669			.weight_calls_budget(<StructureWeight<T>>::find_parent());670671		if <TokensMinted<T>>::get(self.id)672			.checked_add(1)673			.ok_or("item id overflow")?674			!= token_id675		{676			return Err("item id should be next".into());677		}678679		let mut properties = CollectionPropertiesVec::default();680		properties681			.try_push(Property {682				key,683				value: token_uri684					.into_bytes()685					.try_into()686					.map_err(|_| "token uri is too long")?,687			})688			.map_err(|e| Error::Revert(alloc::format!("can't add property: {e:?}")))?;689690		<Pallet<T>>::create_item(691			self,692			&caller,693			CreateItemData::<T> {694				properties,695				owner: to,696			},697			&budget,698		)699		.map_err(dispatch_to_evm::<T>)?;700		Ok(true)701	}702}703704fn get_token_property<T: Config>(705	collection: &CollectionHandle<T>,706	token_id: u32,707	key: &up_data_structs::PropertyKey,708) -> Result<String> {709	collection.consume_store_reads(1)?;710	let properties = <TokenProperties<T>>::try_get((collection.id, token_id))711		.map_err(|_| Error::Revert("token properties not found".into()))?;712	if let Some(property) = properties.get(key) {713		return Ok(String::from_utf8_lossy(property).into());714	}715716	Err("property tokenURI not found".into())717}718719fn get_token_permission<T: Config>(720	collection_id: CollectionId,721	key: &PropertyKey,722) -> Result<PropertyPermission> {723	let token_property_permissions = CollectionPropertyPermissions::<T>::try_get(collection_id)724		.map_err(|_| Error::Revert("no permissions for collection".into()))?;725	let a = token_property_permissions726		.get(key)727		.map(Clone::clone)728		.ok_or_else(|| {729			let key = String::from_utf8(key.clone().into_inner()).unwrap_or_default();730			Error::Revert(alloc::format!("no permission for key {key}"))731		})?;732	Ok(a)733}734735/// @title Unique extensions for ERC721.736#[solidity_interface(name = ERC721UniqueExtensions, enum(derive(PreDispatch)), enum_attr(weight))]737impl<T: Config> NonfungibleHandle<T>738where739	T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]>,740{741	/// @notice A descriptive name for a collection of NFTs in this contract742	fn name(&self) -> String {743		decode_utf16(self.name.iter().copied())744			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))745			.collect::<String>()746	}747748	/// @notice An abbreviated name for NFTs in this contract749	fn symbol(&self) -> String {750		String::from_utf8_lossy(&self.token_prefix).into()751	}752753	/// @notice A description for the collection.754	fn description(&self) -> String {755		decode_utf16(self.description.iter().copied())756			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))757			.collect::<String>()758	}759760	/// Returns the owner (in cross format) of the token.761	///762	/// @param tokenId Id for the token.763	#[solidity(hide)]764	fn cross_owner_of(&self, token_id: U256) -> Result<eth::CrossAddress> {765		Self::owner_of_cross(self, token_id)766	}767768	/// Returns the owner (in cross format) of the token.769	///770	/// @param tokenId Id for the token.771	fn owner_of_cross(&self, token_id: U256) -> Result<eth::CrossAddress> {772		Self::token_owner(self, token_id.try_into()?)773			.map(|o| eth::CrossAddress::from_sub_cross_account::<T>(&o))774			.map_err(|_| Error::Revert("token not found".into()))775	}776777	/// @notice Count all NFTs assigned to an owner778	/// @param owner An cross address for whom to query the balance779	/// @return The number of NFTs owned by `owner`, possibly zero780	fn balance_of_cross(&self, owner: eth::CrossAddress) -> Result<U256> {781		self.consume_store_reads(1)?;782		let balance = <AccountBalance<T>>::get((self.id, owner.into_sub_cross_account::<T>()?));783		Ok(balance.into())784	}785786	/// Returns the token properties.787	///788	/// @param tokenId Id for the token.789	/// @param keys Properties keys. Empty keys for all propertyes.790	/// @return Vector of properties key/value pairs.791	fn properties(&self, token_id: U256, keys: Vec<String>) -> Result<Vec<eth::Property>> {792		let keys = keys793			.into_iter()794			.map(|key| {795				<Vec<u8>>::from(key)796					.try_into()797					.map_err(|_| Error::Revert("key too large".into()))798			})799			.collect::<Result<Vec<_>>>()?;800801		<Self as CommonCollectionOperations<T>>::token_properties(802			self,803			token_id.try_into()?,804			if keys.is_empty() { None } else { Some(keys) },805		)806		.into_iter()807		.map(eth::Property::try_from)808		.collect::<Result<Vec<_>>>()809	}810811	/// @notice Set or reaffirm the approved address for an NFT812	/// @dev The zero address indicates there is no approved address.813	/// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized814	///  operator of the current owner.815	/// @param approved The new substrate address approved NFT controller816	/// @param tokenId The NFT to approve817	#[weight(<SelfWeightOf<T>>::approve())]818	fn approve_cross(819		&mut self,820		caller: Caller,821		approved: eth::CrossAddress,822		token_id: U256,823	) -> Result<()> {824		let caller = T::CrossAccountId::from_eth(caller);825		let approved = approved.into_sub_cross_account::<T>()?;826		let token = token_id.try_into()?;827828		<Pallet<T>>::set_allowance(self, &caller, token, Some(&approved))829			.map_err(dispatch_to_evm::<T>)?;830		Ok(())831	}832833	/// @notice Transfer ownership of an NFT834	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`835	///  is the zero address. Throws if `tokenId` is not a valid NFT.836	/// @param to The new owner837	/// @param tokenId The NFT to transfer838	#[weight(<CommonWeights<T>>::transfer())]839	fn transfer(&mut self, caller: Caller, to: Address, token_id: U256) -> Result<()> {840		let caller = T::CrossAccountId::from_eth(caller);841		let to = T::CrossAccountId::from_eth(to);842		let token = token_id.try_into()?;843		let budget = self844			.recorder845			.weight_calls_budget(<StructureWeight<T>>::find_parent());846847		<Pallet<T>>::transfer(self, &caller, &to, token, &budget)848			.map_err(|e| dispatch_to_evm::<T>(e.error))?;849		Ok(())850	}851852	/// @notice Transfer ownership of an NFT853	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`854	///  is the zero address. Throws if `tokenId` is not a valid NFT.855	/// @param to The new owner856	/// @param tokenId The NFT to transfer857	#[weight(<CommonWeights<T>>::transfer())]858	fn transfer_cross(859		&mut self,860		caller: Caller,861		to: eth::CrossAddress,862		token_id: U256,863	) -> Result<()> {864		let caller = T::CrossAccountId::from_eth(caller);865		let to = to.into_sub_cross_account::<T>()?;866		let token = token_id.try_into()?;867		let budget = self868			.recorder869			.weight_calls_budget(<StructureWeight<T>>::find_parent());870871		<Pallet<T>>::transfer(self, &caller, &to, token, &budget)872			.map_err(|e| dispatch_to_evm::<T>(e.error))?;873		Ok(())874	}875876	/// @notice Transfer ownership of an NFT from cross account address to cross account address877	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`878	///  is the zero address. Throws if `tokenId` is not a valid NFT.879	/// @param from Cross acccount address of current owner880	/// @param to Cross acccount address of new owner881	/// @param tokenId The NFT to transfer882	#[weight(<CommonWeights<T>>::transfer_from())]883	fn transfer_from_cross(884		&mut self,885		caller: Caller,886		from: eth::CrossAddress,887		to: eth::CrossAddress,888		token_id: U256,889	) -> Result<()> {890		let caller = T::CrossAccountId::from_eth(caller);891		let from = from.into_sub_cross_account::<T>()?;892		let to = to.into_sub_cross_account::<T>()?;893		let token_id = token_id.try_into()?;894		let budget = self895			.recorder896			.weight_calls_budget(<StructureWeight<T>>::find_parent());897		Pallet::<T>::transfer_from(self, &caller, &from, &to, token_id, &budget)898			.map_err(|e| dispatch_to_evm::<T>(e.error))?;899		Ok(())900	}901902	/// @notice Burns a specific ERC721 token.903	/// @dev Throws unless `msg.sender` is the current owner or an authorized904	///  operator for this NFT. Throws if `from` is not the current owner. Throws905	///  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.906	/// @param from The current owner of the NFT907	/// @param tokenId The NFT to transfer908	#[solidity(hide)]909	#[weight(<SelfWeightOf<T>>::burn_from())]910	fn burn_from(&mut self, caller: Caller, from: Address, token_id: U256) -> Result<()> {911		let caller = T::CrossAccountId::from_eth(caller);912		let from = T::CrossAccountId::from_eth(from);913		let token = token_id.try_into()?;914		let budget = self915			.recorder916			.weight_calls_budget(<StructureWeight<T>>::find_parent());917918		<Pallet<T>>::burn_from(self, &caller, &from, token, &budget)919			.map_err(dispatch_to_evm::<T>)?;920		Ok(())921	}922923	/// @notice Burns a specific ERC721 token.924	/// @dev Throws unless `msg.sender` is the current owner or an authorized925	///  operator for this NFT. Throws if `from` is not the current owner. Throws926	///  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.927	/// @param from The current owner of the NFT928	/// @param tokenId The NFT to transfer929	#[weight(<SelfWeightOf<T>>::burn_from())]930	fn burn_from_cross(931		&mut self,932		caller: Caller,933		from: eth::CrossAddress,934		token_id: U256,935	) -> Result<()> {936		let caller = T::CrossAccountId::from_eth(caller);937		let from = from.into_sub_cross_account::<T>()?;938		let token = token_id.try_into()?;939		let budget = self940			.recorder941			.weight_calls_budget(<StructureWeight<T>>::find_parent());942943		<Pallet<T>>::burn_from(self, &caller, &from, token, &budget)944			.map_err(dispatch_to_evm::<T>)?;945		Ok(())946	}947948	/// @notice Returns next free NFT ID.949	fn next_token_id(&self) -> Result<U256> {950		self.consume_store_reads(1)?;951		Ok(<Pallet<T>>::next_token_id(self)952			.map_err(dispatch_to_evm::<T>)?953			.into())954	}955956	/// @notice Function to mint multiple tokens.957	/// @dev `tokenIds` should be an array of consecutive numbers and first number958	///  should be obtained with `nextTokenId` method959	/// @param to The new owner960	/// @param tokenIds IDs of the minted NFTs961	#[solidity(hide)]962	#[weight(<SelfWeightOf<T>>::create_multiple_items(token_ids.len() as u32))]963	fn mint_bulk(&mut self, caller: Caller, to: Address, token_ids: Vec<U256>) -> Result<bool> {964		let caller = T::CrossAccountId::from_eth(caller);965		let to = T::CrossAccountId::from_eth(to);966		let mut expected_index = <TokensMinted<T>>::get(self.id)967			.checked_add(1)968			.ok_or("item id overflow")?;969		let budget = self970			.recorder971			.weight_calls_budget(<StructureWeight<T>>::find_parent());972973		let total_tokens = token_ids.len();974		for id in token_ids.into_iter() {975			let id: u32 = id.try_into().map_err(|_| "token id overflow")?;976			if id != expected_index {977				return Err("item id should be next".into());978			}979			expected_index = expected_index.checked_add(1).ok_or("item id overflow")?;980		}981		let data = (0..total_tokens)982			.map(|_| CreateItemData::<T> {983				properties: BoundedVec::default(),984				owner: to.clone(),985			})986			.collect();987988		<Pallet<T>>::create_multiple_items(self, &caller, data, &budget)989			.map_err(dispatch_to_evm::<T>)?;990		Ok(true)991	}992993	/// @notice Function to mint a token.994	/// @param data Array of pairs of token owner and token's properties for minted token995	#[weight(<SelfWeightOf<T>>::create_multiple_items(data.len() as u32) + <SelfWeightOf<T>>::set_token_properties(data.len() as u32))]996	fn mint_bulk_cross(&mut self, caller: Caller, data: Vec<MintTokenData>) -> Result<bool> {997		let caller = T::CrossAccountId::from_eth(caller);998		let budget = self999			.recorder1000			.weight_calls_budget(<StructureWeight<T>>::find_parent());10011002		let mut create_nft_data = Vec::with_capacity(data.len());1003		for MintTokenData { owner, properties } in data {1004			let owner = owner.into_sub_cross_account::<T>()?;1005			create_nft_data.push(CreateItemData::<T> {1006				properties: properties1007					.into_iter()1008					.map(|property| property.try_into())1009					.collect::<Result<Vec<_>>>()?1010					.try_into()1011					.map_err(|_| "too many properties")?,1012				owner,1013			});1014		}10151016		<Pallet<T>>::create_multiple_items(self, &caller, create_nft_data, &budget)1017			.map_err(dispatch_to_evm::<T>)?;1018		Ok(true)1019	}10201021	/// @notice Function to mint multiple tokens with the given tokenUris.1022	/// @dev `tokenIds` is array of pairs of token ID and token URI. Token IDs should be consecutive1023	///  numbers and first number should be obtained with `nextTokenId` method1024	/// @param to The new owner1025	/// @param tokens array of pairs of token ID and token URI for minted tokens1026	#[solidity(hide, rename_selector = "mintBulkWithTokenURI")]1027	#[weight(<SelfWeightOf<T>>::create_multiple_items(tokens.len() as u32) + <SelfWeightOf<T>>::set_token_properties(tokens.len() as u32))]1028	fn mint_bulk_with_token_uri(1029		&mut self,1030		caller: Caller,1031		to: Address,1032		tokens: Vec<TokenUri>,1033	) -> Result<bool> {1034		let key = key::url();1035		let caller = T::CrossAccountId::from_eth(caller);1036		let to = T::CrossAccountId::from_eth(to);1037		let mut expected_index = <TokensMinted<T>>::get(self.id)1038			.checked_add(1)1039			.ok_or("item id overflow")?;1040		let budget = self1041			.recorder1042			.weight_calls_budget(<StructureWeight<T>>::find_parent());10431044		let mut data = Vec::with_capacity(tokens.len());1045		for TokenUri { id, uri } in tokens {1046			let id: u32 = id.try_into().map_err(|_| "token id overflow")?;1047			if id != expected_index {1048				return Err("item id should be next".into());1049			}1050			expected_index = expected_index.checked_add(1).ok_or("item id overflow")?;10511052			let mut properties = CollectionPropertiesVec::default();1053			properties1054				.try_push(Property {1055					key: key.clone(),1056					value: uri1057						.into_bytes()1058						.try_into()1059						.map_err(|_| "token uri is too long")?,1060				})1061				.map_err(|e| Error::Revert(alloc::format!("can't add property: {e:?}")))?;10621063			data.push(CreateItemData::<T> {1064				properties,1065				owner: to.clone(),1066			});1067		}10681069		<Pallet<T>>::create_multiple_items(self, &caller, data, &budget)1070			.map_err(dispatch_to_evm::<T>)?;1071		Ok(true)1072	}10731074	/// @notice Function to mint a token.1075	/// @param to The new owner crossAccountId1076	/// @param properties Properties of minted token1077	/// @return uint256 The id of the newly minted token1078	#[weight(<SelfWeightOf<T>>::create_item() + <SelfWeightOf<T>>::set_token_properties(properties.len() as u32))]1079	fn mint_cross(1080		&mut self,1081		caller: Caller,1082		to: eth::CrossAddress,1083		properties: Vec<eth::Property>,1084	) -> Result<U256> {1085		let token_id = <TokensMinted<T>>::get(self.id)1086			.checked_add(1)1087			.ok_or("item id overflow")?;10881089		let to = to.into_sub_cross_account::<T>()?;10901091		let properties = properties1092			.into_iter()1093			.map(eth::Property::try_into)1094			.collect::<Result<Vec<_>>>()?1095			.try_into()1096			.map_err(|_| Error::Revert("too many properties".to_string()))?;10971098		let caller = T::CrossAccountId::from_eth(caller);10991100		let budget = self1101			.recorder1102			.weight_calls_budget(<StructureWeight<T>>::find_parent());11031104		<Pallet<T>>::create_item(1105			self,1106			&caller,1107			CreateItemData::<T> {1108				properties,1109				owner: to,1110			},1111			&budget,1112		)1113		.map_err(dispatch_to_evm::<T>)?;11141115		Ok(token_id.into())1116	}11171118	/// @notice Returns collection helper contract address1119	fn collection_helper_address(&self) -> Address {1120		T::ContractAddress::get()1121	}1122}11231124#[solidity_interface(1125	name = UniqueNFT,1126	is(1127		ERC721,1128		ERC721Enumerable,1129		ERC721UniqueExtensions,1130		ERC721UniqueMintable,1131		ERC721Burnable,1132		ERC721Metadata(if(this.flags.erc721metadata)),1133		Collection(via(common_mut returns CollectionHandle<T>)),1134		TokenProperties,1135	),1136	enum(derive(PreDispatch)),1137)]1138impl<T: Config> NonfungibleHandle<T> where T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]> {}11391140// Not a tests, but code generators1141generate_stubgen!(gen_impl, UniqueNFTCall<()>, true);1142generate_stubgen!(gen_iface, UniqueNFTCall<()>, false);11431144impl<T: Config> CommonEvmHandler for NonfungibleHandle<T>1145where1146	T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]>,1147{1148	const CODE: &'static [u8] = include_bytes!("./stubs/UniqueNFT.raw");11491150	fn call(self, handle: &mut impl PrecompileHandle) -> Option<PrecompileResult> {1151		call::<T, UniqueNFTCall<T>, _, _>(handle, self)1152	}1153}