git.delta.rocks / unique-network / refs/commits / 6486f2a91bb1

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, 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}6667frontier_contract! {68	macro_rules! NonfungibleHandle_result {...}69	impl<T: Config> Contract for NonfungibleHandle<T> {...}70}7172/// @title A contract that allows to set and delete token properties and change token property permissions.73#[solidity_interface(name = TokenProperties, events(ERC721TokenEvent), enum(derive(PreDispatch)), enum_attr(weight))]74impl<T: Config> NonfungibleHandle<T> {75	/// @notice Set permissions for token property.76	/// @dev Throws error if `msg.sender` is not admin or owner of the collection.77	/// @param key Property key.78	/// @param isMutable Permission to mutate property.79	/// @param collectionAdmin Permission to mutate property by collection admin if property is mutable.80	/// @param tokenOwner Permission to mutate property by token owner if property is mutable.81	#[solidity(hide)]82	#[weight(<SelfWeightOf<T>>::set_token_property_permissions(1))]83	fn set_token_property_permission(84		&mut self,85		caller: Caller,86		key: String,87		is_mutable: bool,88		collection_admin: bool,89		token_owner: bool,90	) -> Result<()> {91		let caller = T::CrossAccountId::from_eth(caller);92		<Pallet<T>>::set_token_property_permissions(93			self,94			&caller,95			vec![PropertyKeyPermission {96				key: <Vec<u8>>::from(key)97					.try_into()98					.map_err(|_| "too long key")?,99				permission: PropertyPermission {100					mutable: is_mutable,101					collection_admin,102					token_owner,103				},104			}],105		)106		.map_err(dispatch_to_evm::<T>)107	}108109	/// @notice Set permissions for token property.110	/// @dev Throws error if `msg.sender` is not admin or owner of the collection.111	/// @param permissions Permissions for keys.112	#[weight(<SelfWeightOf<T>>::set_token_property_permissions(permissions.len() as u32))]113	fn set_token_property_permissions(114		&mut self,115		caller: Caller,116		permissions: Vec<eth::TokenPropertyPermission>,117	) -> Result<()> {118		let caller = T::CrossAccountId::from_eth(caller);119		let perms = eth::TokenPropertyPermission::into_property_key_permissions(permissions)?;120121		<Pallet<T>>::set_token_property_permissions(self, &caller, perms)122			.map_err(dispatch_to_evm::<T>)123	}124125	/// @notice Get permissions for token properties.126	fn token_property_permissions(&self) -> Result<Vec<eth::TokenPropertyPermission>> {127		let perms = <Pallet<T>>::token_property_permission(self.id);128		Ok(perms129			.into_iter()130			.map(eth::TokenPropertyPermission::from)131			.collect())132	}133134	/// @notice Set token property value.135	/// @dev Throws error if `msg.sender` has no permission to edit the property.136	/// @param tokenId ID of the token.137	/// @param key Property key.138	/// @param value Property value.139	#[solidity(hide)]140	#[weight(<SelfWeightOf<T>>::set_token_properties(1))]141	fn set_property(142		&mut self,143		caller: Caller,144		token_id: U256,145		key: String,146		value: Bytes,147	) -> Result<()> {148		let caller = T::CrossAccountId::from_eth(caller);149		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;150		let key = <Vec<u8>>::from(key)151			.try_into()152			.map_err(|_| "key too long")?;153		let value = value.0.try_into().map_err(|_| "value too long")?;154155		let nesting_budget = self156			.recorder157			.weight_calls_budget(<StructureWeight<T>>::find_parent());158159		<Pallet<T>>::set_token_property(160			self,161			&caller,162			TokenId(token_id),163			Property { key, value },164			&nesting_budget,165		)166		.map_err(dispatch_to_evm::<T>)167	}168169	/// @notice Set token properties value.170	/// @dev Throws error if `msg.sender` has no permission to edit the property.171	/// @param tokenId ID of the token.172	/// @param properties settable properties173	#[weight(<SelfWeightOf<T>>::set_token_properties(properties.len() as u32))]174	fn set_properties(175		&mut self,176		caller: Caller,177		token_id: U256,178		properties: Vec<eth::Property>,179	) -> Result<()> {180		let caller = T::CrossAccountId::from_eth(caller);181		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;182183		let nesting_budget = self184			.recorder185			.weight_calls_budget(<StructureWeight<T>>::find_parent());186187		let properties = properties188			.into_iter()189			.map(eth::Property::try_into)190			.collect::<Result<Vec<_>>>()?;191192		<Pallet<T>>::set_token_properties(193			self,194			&caller,195			TokenId(token_id),196			properties.into_iter(),197			pallet_common::SetPropertyMode::ExistingToken,198			&nesting_budget,199		)200		.map_err(dispatch_to_evm::<T>)201	}202203	/// @notice Delete token property value.204	/// @dev Throws error if `msg.sender` has no permission to edit the property.205	/// @param tokenId ID of the token.206	/// @param key Property key.207	#[solidity(hide)]208	#[weight(<SelfWeightOf<T>>::delete_token_properties(1))]209	fn delete_property(&mut self, token_id: U256, caller: Caller, key: String) -> Result<()> {210		let caller = T::CrossAccountId::from_eth(caller);211		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;212		let key = <Vec<u8>>::from(key)213			.try_into()214			.map_err(|_| "key too long")?;215216		let nesting_budget = self217			.recorder218			.weight_calls_budget(<StructureWeight<T>>::find_parent());219220		<Pallet<T>>::delete_token_property(self, &caller, TokenId(token_id), key, &nesting_budget)221			.map_err(dispatch_to_evm::<T>)222	}223224	/// @notice Delete token properties value.225	/// @dev Throws error if `msg.sender` has no permission to edit the property.226	/// @param tokenId ID of the token.227	/// @param keys Properties key.228	#[weight(<SelfWeightOf<T>>::delete_token_properties(keys.len() as u32))]229	fn delete_properties(230		&mut self,231		token_id: U256,232		caller: Caller,233		keys: Vec<String>,234	) -> Result<()> {235		let caller = T::CrossAccountId::from_eth(caller);236		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;237		let keys = keys238			.into_iter()239			.map(|k| Ok(<Vec<u8>>::from(k).try_into().map_err(|_| "key too long")?))240			.collect::<Result<Vec<_>>>()?;241242		let nesting_budget = self243			.recorder244			.weight_calls_budget(<StructureWeight<T>>::find_parent());245246		<Pallet<T>>::delete_token_properties(247			self,248			&caller,249			TokenId(token_id),250			keys.into_iter(),251			&nesting_budget,252		)253		.map_err(dispatch_to_evm::<T>)254	}255256	/// @notice Get token property value.257	/// @dev Throws error if key not found258	/// @param tokenId ID of the token.259	/// @param key Property key.260	/// @return Property value bytes261	fn property(&self, token_id: U256, key: String) -> Result<Bytes> {262		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;263		let key = <Vec<u8>>::from(key)264			.try_into()265			.map_err(|_| "key too long")?;266267		let props = <TokenProperties<T>>::get((self.id, token_id));268		let prop = props.get(&key).ok_or("key not found")?;269270		Ok(prop.to_vec().into())271	}272}273274#[derive(ToLog)]275pub enum ERC721Events {276	/// @dev This emits when ownership of any NFT changes by any mechanism.277	///  This event emits when NFTs are created (`from` == 0) and destroyed278	///  (`to` == 0). Exception: during contract creation, any number of NFTs279	///  may be created and assigned without emitting Transfer. At the time of280	///  any transfer, the approved address for that NFT (if any) is reset to none.281	Transfer {282		#[indexed]283		from: Address,284		#[indexed]285		to: Address,286		#[indexed]287		token_id: U256,288	},289	/// @dev This emits when the approved address for an NFT is changed or290	///  reaffirmed. The zero address indicates there is no approved address.291	///  When a Transfer event emits, this also indicates that the approved292	///  address for that NFT (if any) is reset to none.293	Approval {294		#[indexed]295		owner: Address,296		#[indexed]297		approved: Address,298		#[indexed]299		token_id: U256,300	},301	/// @dev This emits when an operator is enabled or disabled for an owner.302	///  The operator can manage all NFTs of the owner.303	#[allow(dead_code)]304	ApprovalForAll {305		#[indexed]306		owner: Address,307		#[indexed]308		operator: Address,309		approved: bool,310	},311}312313/// @title ERC-721 Non-Fungible Token Standard, optional metadata extension314/// @dev See https://eips.ethereum.org/EIPS/eip-721315#[solidity_interface(name = ERC721Metadata, expect_selector = 0x5b5e139f, enum(derive(PreDispatch)), enum_attr(weight))]316impl<T: Config> NonfungibleHandle<T>317where318	T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]>,319{320	/// @notice A descriptive name for a collection of NFTs in this contract321	/// @dev real implementation of this function lies in `ERC721UniqueExtensions`322	#[solidity(hide, rename_selector = "name")]323	fn name_proxy(&self) -> String {324		self.name()325	}326327	/// @notice An abbreviated name for NFTs in this contract328	/// @dev real implementation of this function lies in `ERC721UniqueExtensions`329	#[solidity(hide, rename_selector = "symbol")]330	fn symbol_proxy(&self) -> String {331		self.symbol()332	}333334	/// @notice A distinct Uniform Resource Identifier (URI) for a given asset.335	///336	/// @dev If the token has a `url` property and it is not empty, it is returned.337	///  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`.338	///  If the collection property `baseURI` is empty or absent, return "" (empty string)339	///  otherwise, if token property `suffix` present and is non-empty, return concatenation of baseURI and suffix340	///  otherwise, return concatenation of `baseURI` and stringified token id (decimal stringifying, without paddings).341	///342	/// @return token's const_metadata343	#[solidity(rename_selector = "tokenURI")]344	fn token_uri(&self, token_id: U256) -> Result<String> {345		let token_id_u32: u32 = token_id.try_into().map_err(|_| "token id overflow")?;346347		match get_token_property(self, token_id_u32, &key::url()).as_deref() {348			Err(_) | Ok("") => (),349			Ok(url) => {350				return Ok(url.into());351			}352		};353354		let base_uri =355			pallet_common::Pallet::<T>::get_collection_property(self.id, &key::base_uri())356				.map(BoundedVec::into_inner)357				.map(String::from_utf8)358				.transpose()359				.map_err(|e| {360					Error::Revert(alloc::format!(361						"Can not convert value \"baseURI\" to string with error \"{e}\""362					))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(<CommonWeights<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(|e| dispatch_to_evm::<T>(e.error))?;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	/// @notice Get the approved address for a single NFT521	/// @dev Throws if `tokenId` is not a valid NFT522	/// @param tokenId The NFT to find the approved address for523	/// @return The approved address for this NFT, or the zero address if there is none524	fn get_approved(&self, token_id: U256) -> Result<Address> {525		let token_id = token_id.try_into()?;526		let operator = <Pallet<T>>::get_allowance(self, token_id).map_err(dispatch_to_evm::<T>)?;527		Ok(if let Some(operator) = operator {528			*operator.as_eth()529		} else {530			Address::zero()531		})532	}533534	/// @notice Tells whether the given `owner` approves the `operator`.535	#[weight(<SelfWeightOf<T>>::allowance_for_all())]536	fn is_approved_for_all(&self, owner: Address, operator: Address) -> Result<bool> {537		let owner = T::CrossAccountId::from_eth(owner);538		let operator = T::CrossAccountId::from_eth(operator);539540		Ok(<Pallet<T>>::allowance_for_all(self, &owner, &operator))541	}542}543544/// @title ERC721 Token that can be irreversibly burned (destroyed).545#[solidity_interface(name = ERC721Burnable, enum(derive(PreDispatch)), enum_attr(weight))]546impl<T: Config> NonfungibleHandle<T> {547	/// @notice Burns a specific ERC721 token.548	/// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized549	///  operator of the current owner.550	/// @param tokenId The NFT to approve551	#[weight(<SelfWeightOf<T>>::burn_item())]552	fn burn(&mut self, caller: Caller, token_id: U256) -> Result<()> {553		let caller = T::CrossAccountId::from_eth(caller);554		let token = token_id.try_into()?;555556		<Pallet<T>>::burn(self, &caller, token).map_err(dispatch_to_evm::<T>)?;557		Ok(())558	}559}560561/// @title ERC721 minting logic.562#[solidity_interface(name = ERC721UniqueMintable, enum(derive(PreDispatch)), enum_attr(weight))]563impl<T: Config> NonfungibleHandle<T> {564	/// @notice Function to mint a token.565	/// @param to The new owner566	/// @return uint256 The id of the newly minted token567	#[weight(<SelfWeightOf<T>>::create_item())]568	fn mint(&mut self, caller: Caller, to: Address) -> Result<U256> {569		let token_id: U256 = <TokensMinted<T>>::get(self.id)570			.checked_add(1)571			.ok_or("item id overflow")?572			.into();573		self.mint_check_id(caller, to, token_id)?;574		Ok(token_id)575	}576577	/// @notice Function to mint a token.578	/// @dev `tokenId` should be obtained with `nextTokenId` method,579	///  unlike standard, you can't specify it manually580	/// @param to The new owner581	/// @param tokenId ID of the minted NFT582	#[solidity(hide, rename_selector = "mint")]583	#[weight(<SelfWeightOf<T>>::create_item())]584	fn mint_check_id(&mut self, caller: Caller, to: Address, token_id: U256) -> Result<bool> {585		let caller = T::CrossAccountId::from_eth(caller);586		let to = T::CrossAccountId::from_eth(to);587		let token_id: u32 = token_id.try_into()?;588		let budget = self589			.recorder590			.weight_calls_budget(<StructureWeight<T>>::find_parent());591592		if <TokensMinted<T>>::get(self.id)593			.checked_add(1)594			.ok_or("item id overflow")?595			!= token_id596		{597			return Err("item id should be next".into());598		}599600		<Pallet<T>>::create_item(601			self,602			&caller,603			CreateItemData::<T> {604				properties: BoundedVec::default(),605				owner: to,606			},607			&budget,608		)609		.map_err(dispatch_to_evm::<T>)?;610611		Ok(true)612	}613614	/// @notice Function to mint token with the given tokenUri.615	/// @param to The new owner616	/// @param tokenUri Token URI that would be stored in the NFT properties617	/// @return uint256 The id of the newly minted token618	#[solidity(rename_selector = "mintWithTokenURI")]619	#[weight(<SelfWeightOf<T>>::create_item() + <SelfWeightOf<T>>::set_token_properties(1))]620	fn mint_with_token_uri(621		&mut self,622		caller: Caller,623		to: Address,624		token_uri: String,625	) -> Result<U256> {626		let token_id: U256 = <TokensMinted<T>>::get(self.id)627			.checked_add(1)628			.ok_or("item id overflow")?629			.into();630		self.mint_with_token_uri_check_id(caller, to, token_id, token_uri)?;631		Ok(token_id)632	}633634	/// @notice Function to mint token with the given tokenUri.635	/// @dev `tokenId` should be obtained with `nextTokenId` method,636	///  unlike standard, you can't specify it manually637	/// @param to The new owner638	/// @param tokenId ID of the minted NFT639	/// @param tokenUri Token URI that would be stored in the NFT properties640	#[solidity(hide, rename_selector = "mintWithTokenURI")]641	#[weight(<SelfWeightOf<T>>::create_item() + <SelfWeightOf<T>>::set_token_properties(1))]642	fn mint_with_token_uri_check_id(643		&mut self,644		caller: Caller,645		to: Address,646		token_id: U256,647		token_uri: String,648	) -> Result<bool> {649		let key = key::url();650		let permission = get_token_permission::<T>(self.id, &key)?;651		if !permission.collection_admin {652			return Err("Operation is not allowed".into());653		}654655		let caller = T::CrossAccountId::from_eth(caller);656		let to = T::CrossAccountId::from_eth(to);657		let token_id: u32 = token_id.try_into().map_err(|_| "amount overflow")?;658		let budget = self659			.recorder660			.weight_calls_budget(<StructureWeight<T>>::find_parent());661662		if <TokensMinted<T>>::get(self.id)663			.checked_add(1)664			.ok_or("item id overflow")?665			!= token_id666		{667			return Err("item id should be next".into());668		}669670		let mut properties = CollectionPropertiesVec::default();671		properties672			.try_push(Property {673				key,674				value: token_uri675					.into_bytes()676					.try_into()677					.map_err(|_| "token uri is too long")?,678			})679			.map_err(|e| Error::Revert(alloc::format!("Can't add property: {e:?}")))?;680681		<Pallet<T>>::create_item(682			self,683			&caller,684			CreateItemData::<T> {685				properties,686				owner: to,687			},688			&budget,689		)690		.map_err(dispatch_to_evm::<T>)?;691		Ok(true)692	}693}694695fn get_token_property<T: Config>(696	collection: &CollectionHandle<T>,697	token_id: u32,698	key: &up_data_structs::PropertyKey,699) -> Result<String> {700	collection.consume_store_reads(1)?;701	let properties = <TokenProperties<T>>::try_get((collection.id, token_id))702		.map_err(|_| Error::Revert("Token properties not found".into()))?;703	if let Some(property) = properties.get(key) {704		return Ok(String::from_utf8_lossy(property).into());705	}706707	Err("Property tokenURI not found".into())708}709710fn get_token_permission<T: Config>(711	collection_id: CollectionId,712	key: &PropertyKey,713) -> Result<PropertyPermission> {714	let token_property_permissions = CollectionPropertyPermissions::<T>::try_get(collection_id)715		.map_err(|_| Error::Revert("No permissions for collection".into()))?;716	let a = token_property_permissions717		.get(key)718		.map(Clone::clone)719		.ok_or_else(|| {720			let key = String::from_utf8(key.clone().into_inner()).unwrap_or_default();721			Error::Revert(alloc::format!("No permission for key {key}"))722		})?;723	Ok(a)724}725726/// @title Unique extensions for ERC721.727#[solidity_interface(name = ERC721UniqueExtensions, enum(derive(PreDispatch)), enum_attr(weight))]728impl<T: Config> NonfungibleHandle<T>729where730	T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]>,731{732	/// @notice A descriptive name for a collection of NFTs in this contract733	fn name(&self) -> String {734		decode_utf16(self.name.iter().copied())735			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))736			.collect::<String>()737	}738739	/// @notice An abbreviated name for NFTs in this contract740	fn symbol(&self) -> String {741		String::from_utf8_lossy(&self.token_prefix).into()742	}743744	/// @notice A description for the collection.745	fn description(&self) -> String {746		decode_utf16(self.description.iter().copied())747			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))748			.collect::<String>()749	}750751	/// Returns the owner (in cross format) of the token.752	///753	/// @param tokenId Id for the token.754	#[solidity(hide)]755	fn cross_owner_of(&self, token_id: U256) -> Result<eth::CrossAddress> {756		Self::owner_of_cross(self, token_id)757	}758759	/// Returns the owner (in cross format) of the token.760	///761	/// @param tokenId Id for the token.762	fn owner_of_cross(&self, token_id: U256) -> Result<eth::CrossAddress> {763		Self::token_owner(self, token_id.try_into()?)764			.map(|o| eth::CrossAddress::from_sub_cross_account::<T>(&o))765			.map_err(|_| Error::Revert("token not found".into()))766	}767768	/// @notice Count all NFTs assigned to an owner769	/// @param owner An cross address for whom to query the balance770	/// @return The number of NFTs owned by `owner`, possibly zero771	fn balance_of_cross(&self, owner: eth::CrossAddress) -> Result<U256> {772		self.consume_store_reads(1)?;773		let balance = <AccountBalance<T>>::get((self.id, owner.into_sub_cross_account::<T>()?));774		Ok(balance.into())775	}776777	/// Returns the token properties.778	///779	/// @param tokenId Id for the token.780	/// @param keys Properties keys. Empty keys for all propertyes.781	/// @return Vector of properties key/value pairs.782	fn properties(&self, token_id: U256, keys: Vec<String>) -> Result<Vec<eth::Property>> {783		let keys = keys784			.into_iter()785			.map(|key| {786				<Vec<u8>>::from(key)787					.try_into()788					.map_err(|_| Error::Revert("key too large".into()))789			})790			.collect::<Result<Vec<_>>>()?;791792		<Self as CommonCollectionOperations<T>>::token_properties(793			self,794			token_id.try_into()?,795			if keys.is_empty() { None } else { Some(keys) },796		)797		.into_iter()798		.map(eth::Property::try_from)799		.collect::<Result<Vec<_>>>()800	}801802	/// @notice Set or reaffirm the approved address for an NFT803	/// @dev The zero address indicates there is no approved address.804	/// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized805	///  operator of the current owner.806	/// @param approved The new substrate address approved NFT controller807	/// @param tokenId The NFT to approve808	#[weight(<SelfWeightOf<T>>::approve())]809	fn approve_cross(810		&mut self,811		caller: Caller,812		approved: eth::CrossAddress,813		token_id: U256,814	) -> Result<()> {815		let caller = T::CrossAccountId::from_eth(caller);816		let approved = approved.into_sub_cross_account::<T>()?;817		let token = token_id.try_into()?;818819		<Pallet<T>>::set_allowance(self, &caller, token, Some(&approved))820			.map_err(dispatch_to_evm::<T>)?;821		Ok(())822	}823824	/// @notice Transfer ownership of an NFT825	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`826	///  is the zero address. Throws if `tokenId` is not a valid NFT.827	/// @param to The new owner828	/// @param tokenId The NFT to transfer829	#[weight(<CommonWeights<T>>::transfer())]830	fn transfer(&mut self, caller: Caller, to: Address, token_id: U256) -> Result<()> {831		let caller = T::CrossAccountId::from_eth(caller);832		let to = T::CrossAccountId::from_eth(to);833		let token = token_id.try_into()?;834		let budget = self835			.recorder836			.weight_calls_budget(<StructureWeight<T>>::find_parent());837838		<Pallet<T>>::transfer(self, &caller, &to, token, &budget)839			.map_err(|e| dispatch_to_evm::<T>(e.error))?;840		Ok(())841	}842843	/// @notice Transfer ownership of an NFT844	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`845	///  is the zero address. Throws if `tokenId` is not a valid NFT.846	/// @param to The new owner847	/// @param tokenId The NFT to transfer848	#[weight(<CommonWeights<T>>::transfer())]849	fn transfer_cross(850		&mut self,851		caller: Caller,852		to: eth::CrossAddress,853		token_id: U256,854	) -> Result<()> {855		let caller = T::CrossAccountId::from_eth(caller);856		let to = to.into_sub_cross_account::<T>()?;857		let token = token_id.try_into()?;858		let budget = self859			.recorder860			.weight_calls_budget(<StructureWeight<T>>::find_parent());861862		<Pallet<T>>::transfer(self, &caller, &to, token, &budget)863			.map_err(|e| dispatch_to_evm::<T>(e.error))?;864		Ok(())865	}866867	/// @notice Transfer ownership of an NFT from cross account address to cross account address868	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`869	///  is the zero address. Throws if `tokenId` is not a valid NFT.870	/// @param from Cross acccount address of current owner871	/// @param to Cross acccount address of new owner872	/// @param tokenId The NFT to transfer873	#[weight(<CommonWeights<T>>::transfer_from())]874	fn transfer_from_cross(875		&mut self,876		caller: Caller,877		from: eth::CrossAddress,878		to: eth::CrossAddress,879		token_id: U256,880	) -> Result<()> {881		let caller = T::CrossAccountId::from_eth(caller);882		let from = from.into_sub_cross_account::<T>()?;883		let to = to.into_sub_cross_account::<T>()?;884		let token_id = token_id.try_into()?;885		let budget = self886			.recorder887			.weight_calls_budget(<StructureWeight<T>>::find_parent());888		Pallet::<T>::transfer_from(self, &caller, &from, &to, token_id, &budget)889			.map_err(|e| dispatch_to_evm::<T>(e.error))?;890		Ok(())891	}892893	/// @notice Burns a specific ERC721 token.894	/// @dev Throws unless `msg.sender` is the current owner or an authorized895	///  operator for this NFT. Throws if `from` is not the current owner. Throws896	///  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.897	/// @param from The current owner of the NFT898	/// @param tokenId The NFT to transfer899	#[solidity(hide)]900	#[weight(<SelfWeightOf<T>>::burn_from())]901	fn burn_from(&mut self, caller: Caller, from: Address, token_id: U256) -> Result<()> {902		let caller = T::CrossAccountId::from_eth(caller);903		let from = T::CrossAccountId::from_eth(from);904		let token = token_id.try_into()?;905		let budget = self906			.recorder907			.weight_calls_budget(<StructureWeight<T>>::find_parent());908909		<Pallet<T>>::burn_from(self, &caller, &from, token, &budget)910			.map_err(dispatch_to_evm::<T>)?;911		Ok(())912	}913914	/// @notice Burns a specific ERC721 token.915	/// @dev Throws unless `msg.sender` is the current owner or an authorized916	///  operator for this NFT. Throws if `from` is not the current owner. Throws917	///  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.918	/// @param from The current owner of the NFT919	/// @param tokenId The NFT to transfer920	#[weight(<SelfWeightOf<T>>::burn_from())]921	fn burn_from_cross(922		&mut self,923		caller: Caller,924		from: eth::CrossAddress,925		token_id: U256,926	) -> Result<()> {927		let caller = T::CrossAccountId::from_eth(caller);928		let from = from.into_sub_cross_account::<T>()?;929		let token = token_id.try_into()?;930		let budget = self931			.recorder932			.weight_calls_budget(<StructureWeight<T>>::find_parent());933934		<Pallet<T>>::burn_from(self, &caller, &from, token, &budget)935			.map_err(dispatch_to_evm::<T>)?;936		Ok(())937	}938939	/// @notice Returns next free NFT ID.940	fn next_token_id(&self) -> Result<U256> {941		self.consume_store_reads(1)?;942		Ok(<Pallet<T>>::next_token_id(self)943			.map_err(dispatch_to_evm::<T>)?944			.into())945	}946947	/// @notice Function to mint multiple tokens.948	/// @dev `tokenIds` should be an array of consecutive numbers and first number949	///  should be obtained with `nextTokenId` method950	/// @param to The new owner951	/// @param tokenIds IDs of the minted NFTs952	#[solidity(hide)]953	#[weight(<SelfWeightOf<T>>::create_multiple_items(token_ids.len() as u32))]954	fn mint_bulk(&mut self, caller: Caller, to: Address, token_ids: Vec<U256>) -> Result<bool> {955		let caller = T::CrossAccountId::from_eth(caller);956		let to = T::CrossAccountId::from_eth(to);957		let mut expected_index = <TokensMinted<T>>::get(self.id)958			.checked_add(1)959			.ok_or("item id overflow")?;960		let budget = self961			.recorder962			.weight_calls_budget(<StructureWeight<T>>::find_parent());963964		let total_tokens = token_ids.len();965		for id in token_ids.into_iter() {966			let id: u32 = id.try_into().map_err(|_| "token id overflow")?;967			if id != expected_index {968				return Err("item id should be next".into());969			}970			expected_index = expected_index.checked_add(1).ok_or("item id overflow")?;971		}972		let data = (0..total_tokens)973			.map(|_| CreateItemData::<T> {974				properties: BoundedVec::default(),975				owner: to.clone(),976			})977			.collect();978979		<Pallet<T>>::create_multiple_items(self, &caller, data, &budget)980			.map_err(dispatch_to_evm::<T>)?;981		Ok(true)982	}983984	/// @notice Function to mint multiple tokens with the given tokenUris.985	/// @dev `tokenIds` is array of pairs of token ID and token URI. Token IDs should be consecutive986	///  numbers and first number should be obtained with `nextTokenId` method987	/// @param to The new owner988	/// @param tokens array of pairs of token ID and token URI for minted tokens989	#[solidity(hide, rename_selector = "mintBulkWithTokenURI")]990	#[weight(<SelfWeightOf<T>>::create_multiple_items(tokens.len() as u32)  + <SelfWeightOf<T>>::set_token_properties(tokens.len() as u32))]991	fn mint_bulk_with_token_uri(992		&mut self,993		caller: Caller,994		to: Address,995		tokens: Vec<TokenUri>,996	) -> Result<bool> {997		let key = key::url();998		let caller = T::CrossAccountId::from_eth(caller);999		let to = T::CrossAccountId::from_eth(to);1000		let mut expected_index = <TokensMinted<T>>::get(self.id)1001			.checked_add(1)1002			.ok_or("item id overflow")?;1003		let budget = self1004			.recorder1005			.weight_calls_budget(<StructureWeight<T>>::find_parent());10061007		let mut data = Vec::with_capacity(tokens.len());1008		for TokenUri { id, uri } in tokens {1009			let id: u32 = id.try_into().map_err(|_| "token id overflow")?;1010			if id != expected_index {1011				return Err("item id should be next".into());1012			}1013			expected_index = expected_index.checked_add(1).ok_or("item id overflow")?;10141015			let mut properties = CollectionPropertiesVec::default();1016			properties1017				.try_push(Property {1018					key: key.clone(),1019					value: uri1020						.into_bytes()1021						.try_into()1022						.map_err(|_| "token uri is too long")?,1023				})1024				.map_err(|e| Error::Revert(alloc::format!("Can't add property: {e:?}")))?;10251026			data.push(CreateItemData::<T> {1027				properties,1028				owner: to.clone(),1029			});1030		}10311032		<Pallet<T>>::create_multiple_items(self, &caller, data, &budget)1033			.map_err(dispatch_to_evm::<T>)?;1034		Ok(true)1035	}10361037	/// @notice Function to mint a token.1038	/// @param to The new owner crossAccountId1039	/// @param properties Properties of minted token1040	/// @return uint256 The id of the newly minted token1041	#[weight(<SelfWeightOf<T>>::create_item() + <SelfWeightOf<T>>::set_token_properties(properties.len() as u32))]1042	fn mint_cross(1043		&mut self,1044		caller: Caller,1045		to: eth::CrossAddress,1046		properties: Vec<eth::Property>,1047	) -> Result<U256> {1048		let token_id = <TokensMinted<T>>::get(self.id)1049			.checked_add(1)1050			.ok_or("item id overflow")?;10511052		let to = to.into_sub_cross_account::<T>()?;10531054		let properties = properties1055			.into_iter()1056			.map(eth::Property::try_into)1057			.collect::<Result<Vec<_>>>()?1058			.try_into()1059			.map_err(|_| Error::Revert("too many properties".to_string()))?;10601061		let caller = T::CrossAccountId::from_eth(caller);10621063		let budget = self1064			.recorder1065			.weight_calls_budget(<StructureWeight<T>>::find_parent());10661067		<Pallet<T>>::create_item(1068			self,1069			&caller,1070			CreateItemData::<T> {1071				properties,1072				owner: to,1073			},1074			&budget,1075		)1076		.map_err(dispatch_to_evm::<T>)?;10771078		Ok(token_id.into())1079	}10801081	/// @notice Returns collection helper contract address1082	fn collection_helper_address(&self) -> Address {1083		T::ContractAddress::get()1084	}1085}10861087#[solidity_interface(1088	name = UniqueNFT,1089	is(1090		ERC721,1091		ERC721Enumerable,1092		ERC721UniqueExtensions,1093		ERC721UniqueMintable,1094		ERC721Burnable,1095		ERC721Metadata(if(this.flags.erc721metadata)),1096		Collection(via(common_mut returns CollectionHandle<T>)),1097		TokenProperties,1098	),1099	enum(derive(PreDispatch)),1100)]1101impl<T: Config> NonfungibleHandle<T> where T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]> {}11021103// Not a tests, but code generators1104generate_stubgen!(gen_impl, UniqueNFTCall<()>, true);1105generate_stubgen!(gen_iface, UniqueNFTCall<()>, false);11061107impl<T: Config> CommonEvmHandler for NonfungibleHandle<T>1108where1109	T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]>,1110{1111	const CODE: &'static [u8] = include_bytes!("./stubs/UniqueNFT.raw");11121113	fn call(self, handle: &mut impl PrecompileHandle) -> Option<PrecompileResult> {1114		call::<T, UniqueNFTCall<T>, _, _>(handle, self)1115	}1116}