git.delta.rocks / unique-network / refs/commits / eebd0e2c517b

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::{REPLACEMENT_CHARACTER, decode_utf16},27	convert::TryInto,28};29use evm_coder::{abi::AbiType, AbiCoder, ToLog, generate_stubgen, solidity_interface, types::*};30use frame_support::BoundedVec;31use up_data_structs::{32	TokenId, PropertyPermission, PropertyKeyPermission, Property, CollectionId, PropertyKey,33	CollectionPropertiesVec,34};35use pallet_evm_coder_substrate::{36	dispatch_to_evm, frontier_contract,37	execution::{Result, PreDispatch, Error},38};39use sp_std::{vec::Vec, vec};40use pallet_common::{41	CollectionHandle, CollectionPropertyPermissions, CommonCollectionOperations,42	erc::{CommonEvmHandler, PrecompileResult, CollectionCall, static_property::key},43	eth::{self, TokenUri},44	CommonWeightInfo,45};46use pallet_evm::{account::CrossAccountId, PrecompileHandle};47use pallet_evm_coder_substrate::call;48use pallet_structure::{SelfWeightOf as StructureWeight, weights::WeightInfo as _};49use sp_core::{U256, Get};5051use crate::{52	AccountBalance, Config, CreateItemData, NonfungibleHandle, Pallet, TokenData, TokensMinted,53	TokenProperties, SelfWeightOf, weights::WeightInfo, common::CommonWeights,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 = <TokenProperties<T>>::get((self.id, token_id));276		let prop = props.get(&key).ok_or("key not found")?;277278		Ok(prop.to_vec().into())279	}280}281282#[derive(ToLog)]283pub enum ERC721Events {284	/// @dev This emits when ownership of any NFT changes by any mechanism.285	///  This event emits when NFTs are created (`from` == 0) and destroyed286	///  (`to` == 0). Exception: during contract creation, any number of NFTs287	///  may be created and assigned without emitting Transfer. At the time of288	///  any transfer, the approved address for that NFT (if any) is reset to none.289	Transfer {290		#[indexed]291		from: Address,292		#[indexed]293		to: Address,294		#[indexed]295		token_id: U256,296	},297	/// @dev This emits when the approved address for an NFT is changed or298	///  reaffirmed. The zero address indicates there is no approved address.299	///  When a Transfer event emits, this also indicates that the approved300	///  address for that NFT (if any) is reset to none.301	Approval {302		#[indexed]303		owner: Address,304		#[indexed]305		approved: Address,306		#[indexed]307		token_id: U256,308	},309	/// @dev This emits when an operator is enabled or disabled for an owner.310	///  The operator can manage all NFTs of the owner.311	#[allow(dead_code)]312	ApprovalForAll {313		#[indexed]314		owner: Address,315		#[indexed]316		operator: Address,317		approved: bool,318	},319}320321/// @title ERC-721 Non-Fungible Token Standard, optional metadata extension322/// @dev See https://eips.ethereum.org/EIPS/eip-721323#[solidity_interface(name = ERC721Metadata, expect_selector = 0x5b5e139f, enum(derive(PreDispatch)), enum_attr(weight))]324impl<T: Config> NonfungibleHandle<T>325where326	T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]>,327{328	/// @notice A descriptive name for a collection of NFTs in this contract329	/// @dev real implementation of this function lies in `ERC721UniqueExtensions`330	#[solidity(hide, rename_selector = "name")]331	fn name_proxy(&self) -> String {332		self.name()333	}334335	/// @notice An abbreviated name for NFTs in this contract336	/// @dev real implementation of this function lies in `ERC721UniqueExtensions`337	#[solidity(hide, rename_selector = "symbol")]338	fn symbol_proxy(&self) -> String {339		self.symbol()340	}341342	/// @notice A distinct Uniform Resource Identifier (URI) for a given asset.343	///344	/// @dev If the token has a `url` property and it is not empty, it is returned.345	///  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`.346	///  If the collection property `baseURI` is empty or absent, return "" (empty string)347	///  otherwise, if token property `suffix` present and is non-empty, return concatenation of baseURI and suffix348	///  otherwise, return concatenation of `baseURI` and stringified token id (decimal stringifying, without paddings).349	///350	/// @return token's const_metadata351	#[solidity(rename_selector = "tokenURI")]352	fn token_uri(&self, token_id: U256) -> Result<String> {353		let token_id_u32: u32 = token_id.try_into().map_err(|_| "token id overflow")?;354355		match get_token_property(self, token_id_u32, &key::url()).as_deref() {356			Err(_) | Ok("") => (),357			Ok(url) => {358				return Ok(url.into());359			}360		};361362		let base_uri =363			pallet_common::Pallet::<T>::get_collection_property(self.id, &key::base_uri())364				.map(BoundedVec::into_inner)365				.map(String::from_utf8)366				.transpose()367				.map_err(|e| {368					Error::Revert(alloc::format!(369						"Can not convert value \"baseURI\" to string with error \"{e}\""370					))371				})?;372373		let base_uri = match base_uri.as_deref() {374			None | Some("") => {375				return Ok("".into());376			}377			Some(base_uri) => base_uri.into(),378		};379380		Ok(381			match get_token_property(self, token_id_u32, &key::suffix()).as_deref() {382				Err(_) | Ok("") => base_uri,383				Ok(suffix) => base_uri + suffix,384			},385		)386	}387}388389/// @title ERC-721 Non-Fungible Token Standard, optional enumeration extension390/// @dev See https://eips.ethereum.org/EIPS/eip-721391#[solidity_interface(name = ERC721Enumerable, expect_selector = 0x780e9d63, enum(derive(PreDispatch)), enum_attr(weight))]392impl<T: Config> NonfungibleHandle<T> {393	/// @notice Enumerate valid NFTs394	/// @param index A counter less than `totalSupply()`395	/// @return The token identifier for the `index`th NFT,396	///  (sort order not specified)397	fn token_by_index(&self, index: U256) -> U256 {398		index399	}400401	/// @dev Not implemented402	fn token_of_owner_by_index(&self, _owner: Address, _index: U256) -> Result<U256> {403		// TODO: Not implemetable404		Err("not implemented".into())405	}406407	/// @notice Count NFTs tracked by this contract408	/// @return A count of valid NFTs tracked by this contract, where each one of409	///  them has an assigned and queryable owner not equal to the zero address410	fn total_supply(&self) -> Result<U256> {411		self.consume_store_reads(1)?;412		Ok(<Pallet<T>>::total_supply(self).into())413	}414}415416/// @title ERC-721 Non-Fungible Token Standard417/// @dev See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md418#[solidity_interface(name = ERC721, events(ERC721Events), enum(derive(PreDispatch)), enum_attr(weight), expect_selector = 0x80ac58cd)]419impl<T: Config> NonfungibleHandle<T> {420	/// @notice Count all NFTs assigned to an owner421	/// @dev NFTs assigned to the zero address are considered invalid, and this422	///  function throws for queries about the zero address.423	/// @param owner An address for whom to query the balance424	/// @return The number of NFTs owned by `owner`, possibly zero425	fn balance_of(&self, owner: Address) -> Result<U256> {426		self.consume_store_reads(1)?;427		let owner = T::CrossAccountId::from_eth(owner);428		let balance = <AccountBalance<T>>::get((self.id, owner));429		Ok(balance.into())430	}431	/// @notice Find the owner of an NFT432	/// @dev NFTs assigned to zero address are considered invalid, and queries433	///  about them do throw.434	/// @param tokenId The identifier for an NFT435	/// @return The address of the owner of the NFT436	fn owner_of(&self, token_id: U256) -> Result<Address> {437		self.consume_store_reads(1)?;438		let token: TokenId = token_id.try_into()?;439		Ok(*<TokenData<T>>::get((self.id, token))440			.ok_or("token not found")?441			.owner442			.as_eth())443	}444	/// @dev Not implemented445	#[solidity(rename_selector = "safeTransferFrom")]446	fn safe_transfer_from_with_data(447		&mut self,448		_from: Address,449		_to: Address,450		_token_id: U256,451		_data: Bytes,452	) -> Result<()> {453		// TODO: Not implemetable454		Err("not implemented".into())455	}456	/// @dev Not implemented457	fn safe_transfer_from(&mut self, _from: Address, _to: Address, _token_id: U256) -> Result<()> {458		// TODO: Not implemetable459		Err("not implemented".into())460	}461462	/// @notice Transfer ownership of an NFT -- THE CALLER IS RESPONSIBLE463	///  TO CONFIRM THAT `to` IS CAPABLE OF RECEIVING NFTS OR ELSE464	///  THEY MAY BE PERMANENTLY LOST465	/// @dev Throws unless `msg.sender` is the current owner or an authorized466	///  operator for this NFT. Throws if `from` is not the current owner. Throws467	///  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.468	/// @param from The current owner of the NFT469	/// @param to The new owner470	/// @param tokenId The NFT to transfer471	#[weight(<CommonWeights<T>>::transfer_from())]472	fn transfer_from(473		&mut self,474		caller: Caller,475		from: Address,476		to: Address,477		token_id: U256,478	) -> Result<()> {479		let caller = T::CrossAccountId::from_eth(caller);480		let from = T::CrossAccountId::from_eth(from);481		let to = T::CrossAccountId::from_eth(to);482		let token = token_id.try_into()?;483		let budget = self484			.recorder485			.weight_calls_budget(<StructureWeight<T>>::find_parent());486487		<Pallet<T>>::transfer_from(self, &caller, &from, &to, token, &budget)488			.map_err(|e| dispatch_to_evm::<T>(e.error))?;489		Ok(())490	}491492	/// @notice Set or reaffirm the approved address for an NFT493	/// @dev The zero address indicates there is no approved address.494	/// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized495	///  operator of the current owner.496	/// @param approved The new approved NFT controller497	/// @param tokenId The NFT to approve498	#[weight(<SelfWeightOf<T>>::approve())]499	fn approve(&mut self, caller: Caller, approved: Address, token_id: U256) -> Result<()> {500		let caller = T::CrossAccountId::from_eth(caller);501		let approved = T::CrossAccountId::from_eth(approved);502		let token = token_id.try_into()?;503504		<Pallet<T>>::set_allowance(self, &caller, token, Some(&approved))505			.map_err(dispatch_to_evm::<T>)?;506		Ok(())507	}508509	/// @notice Sets or unsets the approval of a given operator.510	/// The `operator` is allowed to transfer all tokens of the `caller` on their behalf.511	/// @param operator Operator512	/// @param approved Should operator status be granted or revoked?513	#[weight(<SelfWeightOf<T>>::set_allowance_for_all())]514	fn set_approval_for_all(515		&mut self,516		caller: Caller,517		operator: Address,518		approved: bool,519	) -> Result<()> {520		let caller = T::CrossAccountId::from_eth(caller);521		let operator = T::CrossAccountId::from_eth(operator);522523		<Pallet<T>>::set_allowance_for_all(self, &caller, &operator, approved)524			.map_err(dispatch_to_evm::<T>)?;525		Ok(())526	}527528	/// @notice Get the approved address for a single NFT529	/// @dev Throws if `tokenId` is not a valid NFT530	/// @param tokenId The NFT to find the approved address for531	/// @return The approved address for this NFT, or the zero address if there is none532	fn get_approved(&self, token_id: U256) -> Result<Address> {533		let token_id = token_id.try_into()?;534		let operator = <Pallet<T>>::get_allowance(self, token_id).map_err(dispatch_to_evm::<T>)?;535		Ok(if let Some(operator) = operator {536			*operator.as_eth()537		} else {538			Address::zero()539		})540	}541542	/// @notice Tells whether the given `owner` approves the `operator`.543	#[weight(<SelfWeightOf<T>>::allowance_for_all())]544	fn is_approved_for_all(&self, owner: Address, operator: Address) -> Result<bool> {545		let owner = T::CrossAccountId::from_eth(owner);546		let operator = T::CrossAccountId::from_eth(operator);547548		Ok(<Pallet<T>>::allowance_for_all(self, &owner, &operator))549	}550}551552/// @title ERC721 Token that can be irreversibly burned (destroyed).553#[solidity_interface(name = ERC721Burnable, enum(derive(PreDispatch)), enum_attr(weight))]554impl<T: Config> NonfungibleHandle<T> {555	/// @notice Burns a specific ERC721 token.556	/// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized557	///  operator of the current owner.558	/// @param tokenId The NFT to approve559	#[weight(<SelfWeightOf<T>>::burn_item())]560	fn burn(&mut self, caller: Caller, token_id: U256) -> Result<()> {561		let caller = T::CrossAccountId::from_eth(caller);562		let token = token_id.try_into()?;563564		<Pallet<T>>::burn(self, &caller, token).map_err(dispatch_to_evm::<T>)?;565		Ok(())566	}567}568569/// @title ERC721 minting logic.570#[solidity_interface(name = ERC721UniqueMintable, enum(derive(PreDispatch)), enum_attr(weight))]571impl<T: Config> NonfungibleHandle<T> {572	/// @notice Function to mint a token.573	/// @param to The new owner574	/// @return uint256 The id of the newly minted token575	#[weight(<SelfWeightOf<T>>::create_item())]576	fn mint(&mut self, caller: Caller, to: Address) -> Result<U256> {577		let token_id: U256 = <TokensMinted<T>>::get(self.id)578			.checked_add(1)579			.ok_or("item id overflow")?580			.into();581		self.mint_check_id(caller, to, token_id)?;582		Ok(token_id)583	}584585	/// @notice Function to mint a token.586	/// @dev `tokenId` should be obtained with `nextTokenId` method,587	///  unlike standard, you can't specify it manually588	/// @param to The new owner589	/// @param tokenId ID of the minted NFT590	#[solidity(hide, rename_selector = "mint")]591	#[weight(<SelfWeightOf<T>>::create_item())]592	fn mint_check_id(&mut self, caller: Caller, to: Address, token_id: U256) -> Result<bool> {593		let caller = T::CrossAccountId::from_eth(caller);594		let to = T::CrossAccountId::from_eth(to);595		let token_id: u32 = token_id.try_into()?;596		let budget = self597			.recorder598			.weight_calls_budget(<StructureWeight<T>>::find_parent());599600		if <TokensMinted<T>>::get(self.id)601			.checked_add(1)602			.ok_or("item id overflow")?603			!= token_id604		{605			return Err("item id should be next".into());606		}607608		<Pallet<T>>::create_item(609			self,610			&caller,611			CreateItemData::<T> {612				properties: BoundedVec::default(),613				owner: to,614			},615			&budget,616		)617		.map_err(dispatch_to_evm::<T>)?;618619		Ok(true)620	}621622	/// @notice Function to mint token with the given tokenUri.623	/// @param to The new owner624	/// @param tokenUri Token URI that would be stored in the NFT properties625	/// @return uint256 The id of the newly minted token626	#[solidity(rename_selector = "mintWithTokenURI")]627	#[weight(<SelfWeightOf<T>>::create_item() + <SelfWeightOf<T>>::set_token_properties(1))]628	fn mint_with_token_uri(629		&mut self,630		caller: Caller,631		to: Address,632		token_uri: String,633	) -> Result<U256> {634		let token_id: U256 = <TokensMinted<T>>::get(self.id)635			.checked_add(1)636			.ok_or("item id overflow")?637			.into();638		self.mint_with_token_uri_check_id(caller, to, token_id, token_uri)?;639		Ok(token_id)640	}641642	/// @notice Function to mint token with the given tokenUri.643	/// @dev `tokenId` should be obtained with `nextTokenId` method,644	///  unlike standard, you can't specify it manually645	/// @param to The new owner646	/// @param tokenId ID of the minted NFT647	/// @param tokenUri Token URI that would be stored in the NFT properties648	#[solidity(hide, rename_selector = "mintWithTokenURI")]649	#[weight(<SelfWeightOf<T>>::create_item() + <SelfWeightOf<T>>::set_token_properties(1))]650	fn mint_with_token_uri_check_id(651		&mut self,652		caller: Caller,653		to: Address,654		token_id: U256,655		token_uri: String,656	) -> Result<bool> {657		let key = key::url();658		let permission = get_token_permission::<T>(self.id, &key)?;659		if !permission.collection_admin {660			return Err("Operation is not allowed".into());661		}662663		let caller = T::CrossAccountId::from_eth(caller);664		let to = T::CrossAccountId::from_eth(to);665		let token_id: u32 = token_id.try_into().map_err(|_| "amount overflow")?;666		let budget = self667			.recorder668			.weight_calls_budget(<StructureWeight<T>>::find_parent());669670		if <TokensMinted<T>>::get(self.id)671			.checked_add(1)672			.ok_or("item id overflow")?673			!= token_id674		{675			return Err("item id should be next".into());676		}677678		let mut properties = CollectionPropertiesVec::default();679		properties680			.try_push(Property {681				key,682				value: token_uri683					.into_bytes()684					.try_into()685					.map_err(|_| "token uri is too long")?,686			})687			.map_err(|e| Error::Revert(alloc::format!("Can't add property: {e:?}")))?;688689		<Pallet<T>>::create_item(690			self,691			&caller,692			CreateItemData::<T> {693				properties,694				owner: to,695			},696			&budget,697		)698		.map_err(dispatch_to_evm::<T>)?;699		Ok(true)700	}701}702703fn get_token_property<T: Config>(704	collection: &CollectionHandle<T>,705	token_id: u32,706	key: &up_data_structs::PropertyKey,707) -> Result<String> {708	collection.consume_store_reads(1)?;709	let properties = <TokenProperties<T>>::try_get((collection.id, token_id))710		.map_err(|_| Error::Revert("Token properties not found".into()))?;711	if let Some(property) = properties.get(key) {712		return Ok(String::from_utf8_lossy(property).into());713	}714715	Err("Property tokenURI not found".into())716}717718fn get_token_permission<T: Config>(719	collection_id: CollectionId,720	key: &PropertyKey,721) -> Result<PropertyPermission> {722	let token_property_permissions = CollectionPropertyPermissions::<T>::try_get(collection_id)723		.map_err(|_| Error::Revert("No permissions for collection".into()))?;724	let a = token_property_permissions725		.get(key)726		.map(Clone::clone)727		.ok_or_else(|| {728			let key = String::from_utf8(key.clone().into_inner()).unwrap_or_default();729			Error::Revert(alloc::format!("No permission for key {key}"))730		})?;731	Ok(a)732}733734/// @title Unique extensions for ERC721.735#[solidity_interface(name = ERC721UniqueExtensions, enum(derive(PreDispatch)), enum_attr(weight))]736impl<T: Config> NonfungibleHandle<T>737where738	T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]>,739{740	/// @notice A descriptive name for a collection of NFTs in this contract741	fn name(&self) -> String {742		decode_utf16(self.name.iter().copied())743			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))744			.collect::<String>()745	}746747	/// @notice An abbreviated name for NFTs in this contract748	fn symbol(&self) -> String {749		String::from_utf8_lossy(&self.token_prefix).into()750	}751752	/// @notice A description for the collection.753	fn description(&self) -> String {754		decode_utf16(self.description.iter().copied())755			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))756			.collect::<String>()757	}758759	/// Returns the owner (in cross format) of the token.760	///761	/// @param tokenId Id for the token.762	#[solidity(hide)]763	fn cross_owner_of(&self, token_id: U256) -> Result<eth::CrossAddress> {764		Self::owner_of_cross(self, token_id)765	}766767	/// Returns the owner (in cross format) of the token.768	///769	/// @param tokenId Id for the token.770	fn owner_of_cross(&self, token_id: U256) -> Result<eth::CrossAddress> {771		Self::token_owner(self, token_id.try_into()?)772			.map(|o| eth::CrossAddress::from_sub_cross_account::<T>(&o))773			.map_err(|_| Error::Revert("token not found".into()))774	}775776	/// @notice Count all NFTs assigned to an owner777	/// @param owner An cross address for whom to query the balance778	/// @return The number of NFTs owned by `owner`, possibly zero779	fn balance_of_cross(&self, owner: eth::CrossAddress) -> Result<U256> {780		self.consume_store_reads(1)?;781		let balance = <AccountBalance<T>>::get((self.id, owner.into_sub_cross_account::<T>()?));782		Ok(balance.into())783	}784785	/// Returns the token properties.786	///787	/// @param tokenId Id for the token.788	/// @param keys Properties keys. Empty keys for all propertyes.789	/// @return Vector of properties key/value pairs.790	fn properties(&self, token_id: U256, keys: Vec<String>) -> Result<Vec<eth::Property>> {791		let keys = keys792			.into_iter()793			.map(|key| {794				<Vec<u8>>::from(key)795					.try_into()796					.map_err(|_| Error::Revert("key too large".into()))797			})798			.collect::<Result<Vec<_>>>()?;799800		<Self as CommonCollectionOperations<T>>::token_properties(801			self,802			token_id.try_into()?,803			if keys.is_empty() { None } else { Some(keys) },804		)805		.into_iter()806		.map(eth::Property::try_from)807		.collect::<Result<Vec<_>>>()808	}809810	/// @notice Set or reaffirm the approved address for an NFT811	/// @dev The zero address indicates there is no approved address.812	/// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized813	///  operator of the current owner.814	/// @param approved The new substrate address approved NFT controller815	/// @param tokenId The NFT to approve816	#[weight(<SelfWeightOf<T>>::approve())]817	fn approve_cross(818		&mut self,819		caller: Caller,820		approved: eth::CrossAddress,821		token_id: U256,822	) -> Result<()> {823		let caller = T::CrossAccountId::from_eth(caller);824		let approved = approved.into_sub_cross_account::<T>()?;825		let token = token_id.try_into()?;826827		<Pallet<T>>::set_allowance(self, &caller, token, Some(&approved))828			.map_err(dispatch_to_evm::<T>)?;829		Ok(())830	}831832	/// @notice Transfer ownership of an NFT833	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`834	///  is the zero address. Throws if `tokenId` is not a valid NFT.835	/// @param to The new owner836	/// @param tokenId The NFT to transfer837	#[weight(<CommonWeights<T>>::transfer())]838	fn transfer(&mut self, caller: Caller, to: Address, token_id: U256) -> Result<()> {839		let caller = T::CrossAccountId::from_eth(caller);840		let to = T::CrossAccountId::from_eth(to);841		let token = token_id.try_into()?;842		let budget = self843			.recorder844			.weight_calls_budget(<StructureWeight<T>>::find_parent());845846		<Pallet<T>>::transfer(self, &caller, &to, token, &budget)847			.map_err(|e| dispatch_to_evm::<T>(e.error))?;848		Ok(())849	}850851	/// @notice Transfer ownership of an NFT852	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`853	///  is the zero address. Throws if `tokenId` is not a valid NFT.854	/// @param to The new owner855	/// @param tokenId The NFT to transfer856	#[weight(<CommonWeights<T>>::transfer())]857	fn transfer_cross(858		&mut self,859		caller: Caller,860		to: eth::CrossAddress,861		token_id: U256,862	) -> Result<()> {863		let caller = T::CrossAccountId::from_eth(caller);864		let to = to.into_sub_cross_account::<T>()?;865		let token = token_id.try_into()?;866		let budget = self867			.recorder868			.weight_calls_budget(<StructureWeight<T>>::find_parent());869870		<Pallet<T>>::transfer(self, &caller, &to, token, &budget)871			.map_err(|e| dispatch_to_evm::<T>(e.error))?;872		Ok(())873	}874875	/// @notice Transfer ownership of an NFT from cross account address to cross account address876	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`877	///  is the zero address. Throws if `tokenId` is not a valid NFT.878	/// @param from Cross acccount address of current owner879	/// @param to Cross acccount address of new owner880	/// @param tokenId The NFT to transfer881	#[weight(<CommonWeights<T>>::transfer_from())]882	fn transfer_from_cross(883		&mut self,884		caller: Caller,885		from: eth::CrossAddress,886		to: eth::CrossAddress,887		token_id: U256,888	) -> Result<()> {889		let caller = T::CrossAccountId::from_eth(caller);890		let from = from.into_sub_cross_account::<T>()?;891		let to = to.into_sub_cross_account::<T>()?;892		let token_id = token_id.try_into()?;893		let budget = self894			.recorder895			.weight_calls_budget(<StructureWeight<T>>::find_parent());896		Pallet::<T>::transfer_from(self, &caller, &from, &to, token_id, &budget)897			.map_err(|e| dispatch_to_evm::<T>(e.error))?;898		Ok(())899	}900901	/// @notice Burns a specific ERC721 token.902	/// @dev Throws unless `msg.sender` is the current owner or an authorized903	///  operator for this NFT. Throws if `from` is not the current owner. Throws904	///  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.905	/// @param from The current owner of the NFT906	/// @param tokenId The NFT to transfer907	#[solidity(hide)]908	#[weight(<SelfWeightOf<T>>::burn_from())]909	fn burn_from(&mut self, caller: Caller, from: Address, token_id: U256) -> Result<()> {910		let caller = T::CrossAccountId::from_eth(caller);911		let from = T::CrossAccountId::from_eth(from);912		let token = token_id.try_into()?;913		let budget = self914			.recorder915			.weight_calls_budget(<StructureWeight<T>>::find_parent());916917		<Pallet<T>>::burn_from(self, &caller, &from, token, &budget)918			.map_err(dispatch_to_evm::<T>)?;919		Ok(())920	}921922	/// @notice Burns a specific ERC721 token.923	/// @dev Throws unless `msg.sender` is the current owner or an authorized924	///  operator for this NFT. Throws if `from` is not the current owner. Throws925	///  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.926	/// @param from The current owner of the NFT927	/// @param tokenId The NFT to transfer928	#[weight(<SelfWeightOf<T>>::burn_from())]929	fn burn_from_cross(930		&mut self,931		caller: Caller,932		from: eth::CrossAddress,933		token_id: U256,934	) -> Result<()> {935		let caller = T::CrossAccountId::from_eth(caller);936		let from = from.into_sub_cross_account::<T>()?;937		let token = token_id.try_into()?;938		let budget = self939			.recorder940			.weight_calls_budget(<StructureWeight<T>>::find_parent());941942		<Pallet<T>>::burn_from(self, &caller, &from, token, &budget)943			.map_err(dispatch_to_evm::<T>)?;944		Ok(())945	}946947	/// @notice Returns next free NFT ID.948	fn next_token_id(&self) -> Result<U256> {949		self.consume_store_reads(1)?;950		Ok(<Pallet<T>>::next_token_id(self)951			.map_err(dispatch_to_evm::<T>)?952			.into())953	}954955	/// @notice Function to mint multiple tokens.956	/// @dev `tokenIds` should be an array of consecutive numbers and first number957	///  should be obtained with `nextTokenId` method958	/// @param to The new owner959	/// @param tokenIds IDs of the minted NFTs960	#[solidity(hide)]961	#[weight(<SelfWeightOf<T>>::create_multiple_items(token_ids.len() as u32))]962	fn mint_bulk(&mut self, caller: Caller, to: Address, token_ids: Vec<U256>) -> Result<bool> {963		let caller = T::CrossAccountId::from_eth(caller);964		let to = T::CrossAccountId::from_eth(to);965		let mut expected_index = <TokensMinted<T>>::get(self.id)966			.checked_add(1)967			.ok_or("item id overflow")?;968		let budget = self969			.recorder970			.weight_calls_budget(<StructureWeight<T>>::find_parent());971972		let total_tokens = token_ids.len();973		for id in token_ids.into_iter() {974			let id: u32 = id.try_into().map_err(|_| "token id overflow")?;975			if id != expected_index {976				return Err("item id should be next".into());977			}978			expected_index = expected_index.checked_add(1).ok_or("item id overflow")?;979		}980		let data = (0..total_tokens)981			.map(|_| CreateItemData::<T> {982				properties: BoundedVec::default(),983				owner: to.clone(),984			})985			.collect();986987		<Pallet<T>>::create_multiple_items(self, &caller, data, &budget)988			.map_err(dispatch_to_evm::<T>)?;989		Ok(true)990	}991992	/// @notice Function to mint a token.993	/// @param data Array of pairs of token owner and token's properties for minted token994	#[weight(<SelfWeightOf<T>>::create_multiple_items(data.len() as u32) + <SelfWeightOf<T>>::set_token_properties(data.len() as u32))]995	fn mint_bulk_cross(&mut self, caller: Caller, data: Vec<MintTokenData>) -> Result<bool> {996		let caller = T::CrossAccountId::from_eth(caller);997		let budget = self998			.recorder999			.weight_calls_budget(<StructureWeight<T>>::find_parent());10001001		let mut create_nft_data = Vec::with_capacity(data.len());1002		for MintTokenData { owner, properties } in data {1003			let owner = owner.into_sub_cross_account::<T>()?;1004			create_nft_data.push(CreateItemData::<T> {1005				properties: properties1006					.into_iter()1007					.map(|property| property.try_into())1008					.collect::<Result<Vec<_>>>()?1009					.try_into()1010					.map_err(|_| "too many properties")?,1011				owner,1012			});1013		}10141015		<Pallet<T>>::create_multiple_items(self, &caller, create_nft_data, &budget)1016			.map_err(dispatch_to_evm::<T>)?;1017		Ok(true)1018	}10191020	/// @notice Function to mint multiple tokens with the given tokenUris.1021	/// @dev `tokenIds` is array of pairs of token ID and token URI. Token IDs should be consecutive1022	///  numbers and first number should be obtained with `nextTokenId` method1023	/// @param to The new owner1024	/// @param tokens array of pairs of token ID and token URI for minted tokens1025	#[solidity(hide, rename_selector = "mintBulkWithTokenURI")]1026	#[weight(<SelfWeightOf<T>>::create_multiple_items(tokens.len() as u32) + <SelfWeightOf<T>>::set_token_properties(tokens.len() as u32))]1027	fn mint_bulk_with_token_uri(1028		&mut self,1029		caller: Caller,1030		to: Address,1031		tokens: Vec<TokenUri>,1032	) -> Result<bool> {1033		let key = key::url();1034		let caller = T::CrossAccountId::from_eth(caller);1035		let to = T::CrossAccountId::from_eth(to);1036		let mut expected_index = <TokensMinted<T>>::get(self.id)1037			.checked_add(1)1038			.ok_or("item id overflow")?;1039		let budget = self1040			.recorder1041			.weight_calls_budget(<StructureWeight<T>>::find_parent());10421043		let mut data = Vec::with_capacity(tokens.len());1044		for TokenUri { id, uri } in tokens {1045			let id: u32 = id.try_into().map_err(|_| "token id overflow")?;1046			if id != expected_index {1047				return Err("item id should be next".into());1048			}1049			expected_index = expected_index.checked_add(1).ok_or("item id overflow")?;10501051			let mut properties = CollectionPropertiesVec::default();1052			properties1053				.try_push(Property {1054					key: key.clone(),1055					value: uri1056						.into_bytes()1057						.try_into()1058						.map_err(|_| "token uri is too long")?,1059				})1060				.map_err(|e| Error::Revert(alloc::format!("Can't add property: {e:?}")))?;10611062			data.push(CreateItemData::<T> {1063				properties,1064				owner: to.clone(),1065			});1066		}10671068		<Pallet<T>>::create_multiple_items(self, &caller, data, &budget)1069			.map_err(dispatch_to_evm::<T>)?;1070		Ok(true)1071	}10721073	/// @notice Function to mint a token.1074	/// @param to The new owner crossAccountId1075	/// @param properties Properties of minted token1076	/// @return uint256 The id of the newly minted token1077	#[weight(<SelfWeightOf<T>>::create_item() + <SelfWeightOf<T>>::set_token_properties(properties.len() as u32))]1078	fn mint_cross(1079		&mut self,1080		caller: Caller,1081		to: eth::CrossAddress,1082		properties: Vec<eth::Property>,1083	) -> Result<U256> {1084		let token_id = <TokensMinted<T>>::get(self.id)1085			.checked_add(1)1086			.ok_or("item id overflow")?;10871088		let to = to.into_sub_cross_account::<T>()?;10891090		let properties = properties1091			.into_iter()1092			.map(eth::Property::try_into)1093			.collect::<Result<Vec<_>>>()?1094			.try_into()1095			.map_err(|_| Error::Revert("too many properties".to_string()))?;10961097		let caller = T::CrossAccountId::from_eth(caller);10981099		let budget = self1100			.recorder1101			.weight_calls_budget(<StructureWeight<T>>::find_parent());11021103		<Pallet<T>>::create_item(1104			self,1105			&caller,1106			CreateItemData::<T> {1107				properties,1108				owner: to,1109			},1110			&budget,1111		)1112		.map_err(dispatch_to_evm::<T>)?;11131114		Ok(token_id.into())1115	}11161117	/// @notice Returns collection helper contract address1118	fn collection_helper_address(&self) -> Address {1119		T::ContractAddress::get()1120	}1121}11221123#[solidity_interface(1124	name = UniqueNFT,1125	is(1126		ERC721,1127		ERC721Enumerable,1128		ERC721UniqueExtensions,1129		ERC721UniqueMintable,1130		ERC721Burnable,1131		ERC721Metadata(if(this.flags.erc721metadata)),1132		Collection(via(common_mut returns CollectionHandle<T>)),1133		TokenProperties,1134	),1135	enum(derive(PreDispatch)),1136)]1137impl<T: Config> NonfungibleHandle<T> where T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]> {}11381139// Not a tests, but code generators1140generate_stubgen!(gen_impl, UniqueNFTCall<()>, true);1141generate_stubgen!(gen_iface, UniqueNFTCall<()>, false);11421143impl<T: Config> CommonEvmHandler for NonfungibleHandle<T>1144where1145	T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]>,1146{1147	const CODE: &'static [u8] = include_bytes!("./stubs/UniqueNFT.raw");11481149	fn call(self, handle: &mut impl PrecompileHandle) -> Option<PrecompileResult> {1150		call::<T, UniqueNFTCall<T>, _, _>(handle, self)1151	}1152}