git.delta.rocks / unique-network / refs/commits / 2f30e2f1b171

1// Copyright 2019-2022 Unique Network (Gibraltar) Ltd.2// This file is part of Unique Network.34// Unique Network is free software: you can redistribute it and/or modify5// it under the terms of the GNU General Public License as published by6// the Free Software Foundation, either version 3 of the License, or7// (at your option) any later version.89// Unique Network is distributed in the hope that it will be useful,10// but WITHOUT ANY WARRANTY; without even the implied warranty of11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the12// GNU General Public License for more details.1314// You should have received a copy of the GNU General Public License15// along with Unique Network. If not, see <http://www.gnu.org/licenses/>.1617//! # Nonfungible Pallet EVM API18//!19//! Provides ERC-721 standart support implementation and EVM API for unique extensions for Nonfungible Pallet.20//! Method implementations are mostly doing parameter conversion and calling Nonfungible Pallet methods.2122extern crate alloc;23use core::{24	char::{REPLACEMENT_CHARACTER, decode_utf16},25	convert::TryInto,26};27use evm_coder::{28	abi::AbiType, ToLog, execution::*, generate_stubgen, solidity, solidity_interface, types::*,29	weight,30};31use frame_support::BoundedVec;32use up_data_structs::{33	TokenId, PropertyPermission, PropertyKeyPermission, Property, CollectionId, PropertyKey,34	CollectionPropertiesVec,35};36use pallet_evm_coder_substrate::dispatch_to_evm;37use sp_std::{vec::Vec, vec};38use pallet_common::{39	CollectionHandle, CollectionPropertyPermissions, CommonCollectionOperations,40	erc::{CommonEvmHandler, PrecompileResult, CollectionCall, static_property::key},41	eth,42};43use pallet_evm::{account::CrossAccountId, PrecompileHandle};44use pallet_evm_coder_substrate::call;45use pallet_structure::{SelfWeightOf as StructureWeight, weights::WeightInfo as _};46use sp_core::Get;4748use crate::{49	AccountBalance, Config, CreateItemData, NonfungibleHandle, Pallet, TokenData, TokensMinted,50	SelfWeightOf, weights::WeightInfo, TokenProperties,51};5253/// @title A contract that allows to set and delete token properties and change token property permissions.54#[solidity_interface(name = TokenProperties)]55impl<T: Config> NonfungibleHandle<T> {56	/// @notice Set permissions for token property.57	/// @dev Throws error if `msg.sender` is not admin or owner of the collection.58	/// @param key Property key.59	/// @param isMutable Permission to mutate property.60	/// @param collectionAdmin Permission to mutate property by collection admin if property is mutable.61	/// @param tokenOwner Permission to mutate property by token owner if property is mutable.62	#[weight(<SelfWeightOf<T>>::set_token_property_permissions(1))]63	#[solidity(hide)]64	fn set_token_property_permission(65		&mut self,66		caller: caller,67		key: string,68		is_mutable: bool,69		collection_admin: bool,70		token_owner: bool,71	) -> Result<()> {72		let caller = T::CrossAccountId::from_eth(caller);73		<Pallet<T>>::set_token_property_permissions(74			self,75			&caller,76			vec![PropertyKeyPermission {77				key: <Vec<u8>>::from(key)78					.try_into()79					.map_err(|_| "too long key")?,80				permission: PropertyPermission {81					mutable: is_mutable,82					collection_admin,83					token_owner,84				},85			}],86		)87		.map_err(dispatch_to_evm::<T>)88	}8990	/// @notice Set permissions for token property.91	/// @dev Throws error if `msg.sender` is not admin or owner of the collection.92	/// @param permissions Permissions for keys.93	#[weight(<SelfWeightOf<T>>::set_token_property_permissions(permissions.len() as u32))]94	fn set_token_property_permissions(95		&mut self,96		caller: caller,97		permissions: Vec<eth::TokenPropertyPermission>,98	) -> Result<()> {99		let caller = T::CrossAccountId::from_eth(caller);100		let perms = eth::TokenPropertyPermission::into_property_key_permissions(permissions)?;101102		<Pallet<T>>::set_token_property_permissions(self, &caller, perms)103			.map_err(dispatch_to_evm::<T>)104	}105106	/// @notice Get permissions for token properties.107	fn token_property_permissions(&self) -> Result<Vec<eth::TokenPropertyPermission>> {108		let perms = <Pallet<T>>::token_property_permission(self.id);109		Ok(perms110			.into_iter()111			.map(eth::TokenPropertyPermission::from)112			.collect())113	}114115	/// @notice Set token property value.116	/// @dev Throws error if `msg.sender` has no permission to edit the property.117	/// @param tokenId ID of the token.118	/// @param key Property key.119	/// @param value Property value.120	#[solidity(hide)]121	#[weight(<SelfWeightOf<T>>::set_token_properties(1))]122	fn set_property(123		&mut self,124		caller: caller,125		token_id: uint256,126		key: string,127		value: bytes,128	) -> Result<()> {129		let caller = T::CrossAccountId::from_eth(caller);130		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;131		let key = <Vec<u8>>::from(key)132			.try_into()133			.map_err(|_| "key too long")?;134		let value = value.0.try_into().map_err(|_| "value too long")?;135136		let nesting_budget = self137			.recorder138			.weight_calls_budget(<StructureWeight<T>>::find_parent());139140		<Pallet<T>>::set_token_property(141			self,142			&caller,143			TokenId(token_id),144			Property { key, value },145			&nesting_budget,146		)147		.map_err(dispatch_to_evm::<T>)148	}149150	/// @notice Set token properties value.151	/// @dev Throws error if `msg.sender` has no permission to edit the property.152	/// @param tokenId ID of the token.153	/// @param properties settable properties154	#[weight(<SelfWeightOf<T>>::set_token_properties(properties.len() as u32))]155	fn set_properties(156		&mut self,157		caller: caller,158		token_id: uint256,159		properties: Vec<eth::Property>,160	) -> Result<()> {161		let caller = T::CrossAccountId::from_eth(caller);162		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;163164		let nesting_budget = self165			.recorder166			.weight_calls_budget(<StructureWeight<T>>::find_parent());167168		let properties = properties169			.into_iter()170			.map(eth::Property::try_into)171			.collect::<Result<Vec<_>>>()?;172173		<Pallet<T>>::set_token_properties(174			self,175			&caller,176			TokenId(token_id),177			properties.into_iter(),178			false,179			&nesting_budget,180		)181		.map_err(dispatch_to_evm::<T>)182	}183184	/// @notice Delete token property value.185	/// @dev Throws error if `msg.sender` has no permission to edit the property.186	/// @param tokenId ID of the token.187	/// @param key Property key.188	#[solidity(hide)]189	#[weight(<SelfWeightOf<T>>::delete_token_properties(1))]190	fn delete_property(&mut self, token_id: uint256, caller: caller, key: string) -> Result<()> {191		let caller = T::CrossAccountId::from_eth(caller);192		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;193		let key = <Vec<u8>>::from(key)194			.try_into()195			.map_err(|_| "key too long")?;196197		let nesting_budget = self198			.recorder199			.weight_calls_budget(<StructureWeight<T>>::find_parent());200201		<Pallet<T>>::delete_token_property(self, &caller, TokenId(token_id), key, &nesting_budget)202			.map_err(dispatch_to_evm::<T>)203	}204205	/// @notice Delete token properties value.206	/// @dev Throws error if `msg.sender` has no permission to edit the property.207	/// @param tokenId ID of the token.208	/// @param keys Properties key.209	#[weight(<SelfWeightOf<T>>::delete_token_properties(keys.len() as u32))]210	fn delete_properties(211		&mut self,212		token_id: uint256,213		caller: caller,214		keys: Vec<string>,215	) -> Result<()> {216		let caller = T::CrossAccountId::from_eth(caller);217		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;218		let keys = keys219			.into_iter()220			.map(|k| Ok(<Vec<u8>>::from(k).try_into().map_err(|_| "key too long")?))221			.collect::<Result<Vec<_>>>()?;222223		let nesting_budget = self224			.recorder225			.weight_calls_budget(<StructureWeight<T>>::find_parent());226227		<Pallet<T>>::delete_token_properties(228			self,229			&caller,230			TokenId(token_id),231			keys.into_iter(),232			&nesting_budget,233		)234		.map_err(dispatch_to_evm::<T>)235	}236237	/// @notice Get token property value.238	/// @dev Throws error if key not found239	/// @param tokenId ID of the token.240	/// @param key Property key.241	/// @return Property value bytes242	fn property(&self, token_id: uint256, key: string) -> Result<bytes> {243		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;244		let key = <Vec<u8>>::from(key)245			.try_into()246			.map_err(|_| "key too long")?;247248		let props = <TokenProperties<T>>::get((self.id, token_id));249		let prop = props.get(&key).ok_or("key not found")?;250251		Ok(prop.to_vec().into())252	}253}254255#[derive(ToLog)]256pub enum ERC721Events {257	/// @dev This emits when ownership of any NFT changes by any mechanism.258	///  This event emits when NFTs are created (`from` == 0) and destroyed259	///  (`to` == 0). Exception: during contract creation, any number of NFTs260	///  may be created and assigned without emitting Transfer. At the time of261	///  any transfer, the approved address for that NFT (if any) is reset to none.262	Transfer {263		#[indexed]264		from: address,265		#[indexed]266		to: address,267		#[indexed]268		token_id: uint256,269	},270	/// @dev This emits when the approved address for an NFT is changed or271	///  reaffirmed. The zero address indicates there is no approved address.272	///  When a Transfer event emits, this also indicates that the approved273	///  address for that NFT (if any) is reset to none.274	Approval {275		#[indexed]276		owner: address,277		#[indexed]278		approved: address,279		#[indexed]280		token_id: uint256,281	},282	/// @dev This emits when an operator is enabled or disabled for an owner.283	///  The operator can manage all NFTs of the owner.284	#[allow(dead_code)]285	ApprovalForAll {286		#[indexed]287		owner: address,288		#[indexed]289		operator: address,290		approved: bool,291	},292}293294/// @title ERC-721 Non-Fungible Token Standard, optional metadata extension295/// @dev See https://eips.ethereum.org/EIPS/eip-721296#[solidity_interface(name = ERC721Metadata, expect_selector = 0x5b5e139f)]297impl<T: Config> NonfungibleHandle<T>298where299	T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]>,300{301	/// @notice A descriptive name for a collection of NFTs in this contract302	/// @dev real implementation of this function lies in `ERC721UniqueExtensions`303	#[solidity(hide, rename_selector = "name")]304	fn name_proxy(&self) -> Result<string> {305		self.name()306	}307308	/// @notice An abbreviated name for NFTs in this contract309	/// @dev real implementation of this function lies in `ERC721UniqueExtensions`310	#[solidity(hide, rename_selector = "symbol")]311	fn symbol_proxy(&self) -> Result<string> {312		self.symbol()313	}314315	/// @notice A distinct Uniform Resource Identifier (URI) for a given asset.316	///317	/// @dev If the token has a `url` property and it is not empty, it is returned.318	///  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`.319	///  If the collection property `baseURI` is empty or absent, return "" (empty string)320	///  otherwise, if token property `suffix` present and is non-empty, return concatenation of baseURI and suffix321	///  otherwise, return concatenation of `baseURI` and stringified token id (decimal stringifying, without paddings).322	///323	/// @return token's const_metadata324	#[solidity(rename_selector = "tokenURI")]325	fn token_uri(&self, token_id: uint256) -> Result<string> {326		let token_id_u32: u32 = token_id.try_into().map_err(|_| "token id overflow")?;327328		match get_token_property(self, token_id_u32, &key::url()).as_deref() {329			Err(_) | Ok("") => (),330			Ok(url) => {331				return Ok(url.into());332			}333		};334335		let base_uri =336			pallet_common::Pallet::<T>::get_collection_property(self.id, &key::base_uri())337				.map(BoundedVec::into_inner)338				.map(string::from_utf8)339				.transpose()340				.map_err(|e| {341					Error::Revert(alloc::format!(342						"Can not convert value \"baseURI\" to string with error \"{}\"",343						e344					))345				})?;346347		let base_uri = match base_uri.as_deref() {348			None | Some("") => {349				return Ok("".into());350			}351			Some(base_uri) => base_uri.into(),352		};353354		Ok(355			match get_token_property(self, token_id_u32, &key::suffix()).as_deref() {356				Err(_) | Ok("") => base_uri,357				Ok(suffix) => base_uri + suffix,358			},359		)360	}361}362363/// @title ERC-721 Non-Fungible Token Standard, optional enumeration extension364/// @dev See https://eips.ethereum.org/EIPS/eip-721365#[solidity_interface(name = ERC721Enumerable, expect_selector = 0x780e9d63)]366impl<T: Config> NonfungibleHandle<T> {367	/// @notice Enumerate valid NFTs368	/// @param index A counter less than `totalSupply()`369	/// @return The token identifier for the `index`th NFT,370	///  (sort order not specified)371	fn token_by_index(&self, index: uint256) -> Result<uint256> {372		Ok(index)373	}374375	/// @dev Not implemented376	fn token_of_owner_by_index(&self, _owner: address, _index: uint256) -> Result<uint256> {377		// TODO: Not implemetable378		Err("not implemented".into())379	}380381	/// @notice Count NFTs tracked by this contract382	/// @return A count of valid NFTs tracked by this contract, where each one of383	///  them has an assigned and queryable owner not equal to the zero address384	fn total_supply(&self) -> Result<uint256> {385		self.consume_store_reads(1)?;386		Ok(<Pallet<T>>::total_supply(self).into())387	}388}389390/// @title ERC-721 Non-Fungible Token Standard391/// @dev See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md392#[solidity_interface(name = ERC721, events(ERC721Events), expect_selector = 0x80ac58cd)]393impl<T: Config> NonfungibleHandle<T> {394	/// @notice Count all NFTs assigned to an owner395	/// @dev NFTs assigned to the zero address are considered invalid, and this396	///  function throws for queries about the zero address.397	/// @param owner An address for whom to query the balance398	/// @return The number of NFTs owned by `owner`, possibly zero399	fn balance_of(&self, owner: address) -> Result<uint256> {400		self.consume_store_reads(1)?;401		let owner = T::CrossAccountId::from_eth(owner);402		let balance = <AccountBalance<T>>::get((self.id, owner));403		Ok(balance.into())404	}405	/// @notice Find the owner of an NFT406	/// @dev NFTs assigned to zero address are considered invalid, and queries407	///  about them do throw.408	/// @param tokenId The identifier for an NFT409	/// @return The address of the owner of the NFT410	fn owner_of(&self, token_id: uint256) -> Result<address> {411		self.consume_store_reads(1)?;412		let token: TokenId = token_id.try_into()?;413		Ok(*<TokenData<T>>::get((self.id, token))414			.ok_or("token not found")?415			.owner416			.as_eth())417	}418	/// @dev Not implemented419	#[solidity(rename_selector = "safeTransferFrom")]420	fn safe_transfer_from_with_data(421		&mut self,422		_from: address,423		_to: address,424		_token_id: uint256,425		_data: bytes,426	) -> Result<void> {427		// TODO: Not implemetable428		Err("not implemented".into())429	}430	/// @dev Not implemented431	fn safe_transfer_from(432		&mut self,433		_from: address,434		_to: address,435		_token_id: uint256,436	) -> Result<void> {437		// TODO: Not implemetable438		Err("not implemented".into())439	}440441	/// @notice Transfer ownership of an NFT -- THE CALLER IS RESPONSIBLE442	///  TO CONFIRM THAT `to` IS CAPABLE OF RECEIVING NFTS OR ELSE443	///  THEY MAY BE PERMANENTLY LOST444	/// @dev Throws unless `msg.sender` is the current owner or an authorized445	///  operator for this NFT. Throws if `from` is not the current owner. Throws446	///  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.447	/// @param from The current owner of the NFT448	/// @param to The new owner449	/// @param tokenId The NFT to transfer450	#[weight(<SelfWeightOf<T>>::transfer_from())]451	fn transfer_from(452		&mut self,453		caller: caller,454		from: address,455		to: address,456		token_id: uint256,457	) -> Result<void> {458		let caller = T::CrossAccountId::from_eth(caller);459		let from = T::CrossAccountId::from_eth(from);460		let to = T::CrossAccountId::from_eth(to);461		let token = token_id.try_into()?;462		let budget = self463			.recorder464			.weight_calls_budget(<StructureWeight<T>>::find_parent());465466		<Pallet<T>>::transfer_from(self, &caller, &from, &to, token, &budget)467			.map_err(dispatch_to_evm::<T>)?;468		Ok(())469	}470471	/// @notice Set or reaffirm the approved address for an NFT472	/// @dev The zero address indicates there is no approved address.473	/// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized474	///  operator of the current owner.475	/// @param approved The new approved NFT controller476	/// @param tokenId The NFT to approve477	#[weight(<SelfWeightOf<T>>::approve())]478	fn approve(&mut self, caller: caller, approved: address, token_id: uint256) -> Result<void> {479		let caller = T::CrossAccountId::from_eth(caller);480		let approved = T::CrossAccountId::from_eth(approved);481		let token = token_id.try_into()?;482483		<Pallet<T>>::set_allowance(self, &caller, token, Some(&approved))484			.map_err(dispatch_to_evm::<T>)?;485		Ok(())486	}487488	/// @notice Sets or unsets the approval of a given operator.489	/// The `operator` is allowed to transfer all tokens of the `caller` on their behalf.490	/// @param operator Operator491	/// @param approved Should operator status be granted or revoked?492	#[weight(<SelfWeightOf<T>>::set_allowance_for_all())]493	fn set_approval_for_all(494		&mut self,495		caller: caller,496		operator: address,497		approved: bool,498	) -> Result<void> {499		let caller = T::CrossAccountId::from_eth(caller);500		let operator = T::CrossAccountId::from_eth(operator);501502		<Pallet<T>>::set_allowance_for_all(self, &caller, &operator, approved)503			.map_err(dispatch_to_evm::<T>)?;504		Ok(())505	}506507	/// @dev Not implemented508	fn get_approved(&self, _token_id: uint256) -> Result<address> {509		// TODO: Not implemetable510		Err("not implemented".into())511	}512513	/// @notice Tells whether the given `owner` approves the `operator`.514	#[weight(<SelfWeightOf<T>>::allowance_for_all())]515	fn is_approved_for_all(&self, owner: address, operator: address) -> Result<bool> {516		let owner = T::CrossAccountId::from_eth(owner);517		let operator = T::CrossAccountId::from_eth(operator);518519		Ok(<Pallet<T>>::allowance_for_all(self, &owner, &operator))520	}521}522523/// @title ERC721 Token that can be irreversibly burned (destroyed).524#[solidity_interface(name = ERC721Burnable)]525impl<T: Config> NonfungibleHandle<T> {526	/// @notice Burns a specific ERC721 token.527	/// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized528	///  operator of the current owner.529	/// @param tokenId The NFT to approve530	#[weight(<SelfWeightOf<T>>::burn_item())]531	fn burn(&mut self, caller: caller, token_id: uint256) -> Result<void> {532		let caller = T::CrossAccountId::from_eth(caller);533		let token = token_id.try_into()?;534535		<Pallet<T>>::burn(self, &caller, token).map_err(dispatch_to_evm::<T>)?;536		Ok(())537	}538}539540/// @title ERC721 minting logic.541#[solidity_interface(name = ERC721UniqueMintable)]542impl<T: Config> NonfungibleHandle<T> {543	/// @notice Function to mint a token.544	/// @param to The new owner545	/// @return uint256 The id of the newly minted token546	#[weight(<SelfWeightOf<T>>::create_item())]547	fn mint(&mut self, caller: caller, to: address) -> Result<uint256> {548		let token_id: uint256 = <TokensMinted<T>>::get(self.id)549			.checked_add(1)550			.ok_or("item id overflow")?551			.into();552		self.mint_check_id(caller, to, token_id)?;553		Ok(token_id)554	}555556	/// @notice Function to mint a token.557	/// @dev `tokenId` should be obtained with `nextTokenId` method,558	///  unlike standard, you can't specify it manually559	/// @param to The new owner560	/// @param tokenId ID of the minted NFT561	#[solidity(hide, rename_selector = "mint")]562	#[weight(<SelfWeightOf<T>>::create_item())]563	fn mint_check_id(&mut self, caller: caller, to: address, token_id: uint256) -> Result<bool> {564		let caller = T::CrossAccountId::from_eth(caller);565		let to = T::CrossAccountId::from_eth(to);566		let token_id: u32 = token_id.try_into()?;567		let budget = self568			.recorder569			.weight_calls_budget(<StructureWeight<T>>::find_parent());570571		if <TokensMinted<T>>::get(self.id)572			.checked_add(1)573			.ok_or("item id overflow")?574			!= token_id575		{576			return Err("item id should be next".into());577		}578579		<Pallet<T>>::create_item(580			self,581			&caller,582			CreateItemData::<T> {583				properties: BoundedVec::default(),584				owner: to,585			},586			&budget,587		)588		.map_err(dispatch_to_evm::<T>)?;589590		Ok(true)591	}592593	/// @notice Function to mint token with the given tokenUri.594	/// @param to The new owner595	/// @param tokenUri Token URI that would be stored in the NFT properties596	/// @return uint256 The id of the newly minted token597	#[solidity(rename_selector = "mintWithTokenURI")]598	#[weight(<SelfWeightOf<T>>::create_item())]599	fn mint_with_token_uri(600		&mut self,601		caller: caller,602		to: address,603		token_uri: string,604	) -> Result<uint256> {605		let token_id: uint256 = <TokensMinted<T>>::get(self.id)606			.checked_add(1)607			.ok_or("item id overflow")?608			.into();609		self.mint_with_token_uri_check_id(caller, to, token_id, token_uri)?;610		Ok(token_id)611	}612613	/// @notice Function to mint token with the given tokenUri.614	/// @dev `tokenId` should be obtained with `nextTokenId` method,615	///  unlike standard, you can't specify it manually616	/// @param to The new owner617	/// @param tokenId ID of the minted NFT618	/// @param tokenUri Token URI that would be stored in the NFT properties619	#[solidity(hide, rename_selector = "mintWithTokenURI")]620	#[weight(<SelfWeightOf<T>>::create_item())]621	fn mint_with_token_uri_check_id(622		&mut self,623		caller: caller,624		to: address,625		token_id: uint256,626		token_uri: string,627	) -> Result<bool> {628		let key = key::url();629		let permission = get_token_permission::<T>(self.id, &key)?;630		if !permission.collection_admin {631			return Err("Operation is not allowed".into());632		}633634		let caller = T::CrossAccountId::from_eth(caller);635		let to = T::CrossAccountId::from_eth(to);636		let token_id: u32 = token_id.try_into().map_err(|_| "amount overflow")?;637		let budget = self638			.recorder639			.weight_calls_budget(<StructureWeight<T>>::find_parent());640641		if <TokensMinted<T>>::get(self.id)642			.checked_add(1)643			.ok_or("item id overflow")?644			!= token_id645		{646			return Err("item id should be next".into());647		}648649		let mut properties = CollectionPropertiesVec::default();650		properties651			.try_push(Property {652				key,653				value: token_uri654					.into_bytes()655					.try_into()656					.map_err(|_| "token uri is too long")?,657			})658			.map_err(|e| Error::Revert(alloc::format!("Can't add property: {:?}", e)))?;659660		<Pallet<T>>::create_item(661			self,662			&caller,663			CreateItemData::<T> {664				properties,665				owner: to,666			},667			&budget,668		)669		.map_err(dispatch_to_evm::<T>)?;670		Ok(true)671	}672}673674fn get_token_property<T: Config>(675	collection: &CollectionHandle<T>,676	token_id: u32,677	key: &up_data_structs::PropertyKey,678) -> Result<string> {679	collection.consume_store_reads(1)?;680	let properties = <TokenProperties<T>>::try_get((collection.id, token_id))681		.map_err(|_| Error::Revert("Token properties not found".into()))?;682	if let Some(property) = properties.get(key) {683		return Ok(string::from_utf8_lossy(property).into());684	}685686	Err("Property tokenURI not found".into())687}688689fn get_token_permission<T: Config>(690	collection_id: CollectionId,691	key: &PropertyKey,692) -> Result<PropertyPermission> {693	let token_property_permissions = CollectionPropertyPermissions::<T>::try_get(collection_id)694		.map_err(|_| Error::Revert("No permissions for collection".into()))?;695	let a = token_property_permissions696		.get(key)697		.map(Clone::clone)698		.ok_or_else(|| {699			let key = string::from_utf8(key.clone().into_inner()).unwrap_or_default();700			Error::Revert(alloc::format!("No permission for key {}", key))701		})?;702	Ok(a)703}704705/// @title Unique extensions for ERC721.706#[solidity_interface(name = ERC721UniqueExtensions)]707impl<T: Config> NonfungibleHandle<T>708where709	T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]>,710{711	/// @notice A descriptive name for a collection of NFTs in this contract712	fn name(&self) -> Result<string> {713		Ok(decode_utf16(self.name.iter().copied())714			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))715			.collect::<string>())716	}717718	/// @notice An abbreviated name for NFTs in this contract719	fn symbol(&self) -> Result<string> {720		Ok(string::from_utf8_lossy(&self.token_prefix).into())721	}722723	/// @notice A description for the collection.724	fn description(&self) -> Result<string> {725		Ok(decode_utf16(self.description.iter().copied())726			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))727			.collect::<string>())728	}729730	/// Returns the owner (in cross format) of the token.731	///732	/// @param tokenId Id for the token.733	fn cross_owner_of(&self, token_id: uint256) -> Result<eth::CrossAddress> {734		Self::token_owner(&self, token_id.try_into()?)735			.map(|o| eth::CrossAddress::from_sub_cross_account::<T>(&o))736			.ok_or(Error::Revert("key too large".into()))737	}738739	/// Returns the token properties.740	///741	/// @param tokenId Id for the token.742	/// @param keys Properties keys. Empty keys for all propertyes.743	/// @return Vector of properties key/value pairs.744	fn properties(&self, token_id: uint256, keys: Vec<string>) -> Result<Vec<eth::Property>> {745		let keys = keys746			.into_iter()747			.map(|key| {748				<Vec<u8>>::from(key)749					.try_into()750					.map_err(|_| Error::Revert("key too large".into()))751			})752			.collect::<Result<Vec<_>>>()?;753754		<Self as CommonCollectionOperations<T>>::token_properties(755			&self,756			token_id.try_into()?,757			if keys.is_empty() { None } else { Some(keys) },758		)759		.into_iter()760		.map(eth::Property::try_from)761		.collect::<Result<Vec<_>>>()762	}763764	/// @notice Set or reaffirm the approved address for an NFT765	/// @dev The zero address indicates there is no approved address.766	/// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized767	///  operator of the current owner.768	/// @param approved The new substrate address approved NFT controller769	/// @param tokenId The NFT to approve770	#[weight(<SelfWeightOf<T>>::approve())]771	fn approve_cross(772		&mut self,773		caller: caller,774		approved: eth::CrossAddress,775		token_id: uint256,776	) -> Result<void> {777		let caller = T::CrossAccountId::from_eth(caller);778		let approved = approved.into_sub_cross_account::<T>()?;779		let token = token_id.try_into()?;780781		<Pallet<T>>::set_allowance(self, &caller, token, Some(&approved))782			.map_err(dispatch_to_evm::<T>)?;783		Ok(())784	}785786	/// @notice Transfer ownership of an NFT787	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`788	///  is the zero address. Throws if `tokenId` is not a valid NFT.789	/// @param to The new owner790	/// @param tokenId The NFT to transfer791	#[weight(<SelfWeightOf<T>>::transfer())]792	fn transfer(&mut self, caller: caller, to: address, token_id: uint256) -> Result<void> {793		let caller = T::CrossAccountId::from_eth(caller);794		let to = T::CrossAccountId::from_eth(to);795		let token = token_id.try_into()?;796		let budget = self797			.recorder798			.weight_calls_budget(<StructureWeight<T>>::find_parent());799800		<Pallet<T>>::transfer(self, &caller, &to, token, &budget).map_err(dispatch_to_evm::<T>)?;801		Ok(())802	}803804	/// @notice Transfer ownership of an NFT805	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`806	///  is the zero address. Throws if `tokenId` is not a valid NFT.807	/// @param to The new owner808	/// @param tokenId The NFT to transfer809	#[weight(<SelfWeightOf<T>>::transfer())]810	fn transfer_cross(811		&mut self,812		caller: caller,813		to: eth::CrossAddress,814		token_id: uint256,815	) -> Result<void> {816		let caller = T::CrossAccountId::from_eth(caller);817		let to = to.into_sub_cross_account::<T>()?;818		let token = token_id.try_into()?;819		let budget = self820			.recorder821			.weight_calls_budget(<StructureWeight<T>>::find_parent());822823		<Pallet<T>>::transfer(self, &caller, &to, token, &budget).map_err(dispatch_to_evm::<T>)?;824		Ok(())825	}826827	/// @notice Transfer ownership of an NFT from cross account address to cross account address828	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`829	///  is the zero address. Throws if `tokenId` is not a valid NFT.830	/// @param from Cross acccount address of current owner831	/// @param to Cross acccount address of new owner832	/// @param tokenId The NFT to transfer833	#[weight(<SelfWeightOf<T>>::transfer())]834	fn transfer_from_cross(835		&mut self,836		caller: caller,837		from: eth::CrossAddress,838		to: eth::CrossAddress,839		token_id: uint256,840	) -> Result<void> {841		let caller = T::CrossAccountId::from_eth(caller);842		let from = from.into_sub_cross_account::<T>()?;843		let to = to.into_sub_cross_account::<T>()?;844		let token_id = token_id.try_into()?;845		let budget = self846			.recorder847			.weight_calls_budget(<StructureWeight<T>>::find_parent());848		Pallet::<T>::transfer_from(self, &caller, &from, &to, token_id, &budget)849			.map_err(dispatch_to_evm::<T>)?;850		Ok(())851	}852853	/// @notice Burns a specific ERC721 token.854	/// @dev Throws unless `msg.sender` is the current owner or an authorized855	///  operator for this NFT. Throws if `from` is not the current owner. Throws856	///  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.857	/// @param from The current owner of the NFT858	/// @param tokenId The NFT to transfer859	#[solidity(hide)]860	#[weight(<SelfWeightOf<T>>::burn_from())]861	fn burn_from(&mut self, caller: caller, from: address, token_id: uint256) -> Result<void> {862		let caller = T::CrossAccountId::from_eth(caller);863		let from = T::CrossAccountId::from_eth(from);864		let token = token_id.try_into()?;865		let budget = self866			.recorder867			.weight_calls_budget(<StructureWeight<T>>::find_parent());868869		<Pallet<T>>::burn_from(self, &caller, &from, token, &budget)870			.map_err(dispatch_to_evm::<T>)?;871		Ok(())872	}873874	/// @notice Burns a specific ERC721 token.875	/// @dev Throws unless `msg.sender` is the current owner or an authorized876	///  operator for this NFT. Throws if `from` is not the current owner. Throws877	///  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.878	/// @param from The current owner of the NFT879	/// @param tokenId The NFT to transfer880	#[weight(<SelfWeightOf<T>>::burn_from())]881	fn burn_from_cross(882		&mut self,883		caller: caller,884		from: eth::CrossAddress,885		token_id: uint256,886	) -> Result<void> {887		let caller = T::CrossAccountId::from_eth(caller);888		let from = from.into_sub_cross_account::<T>()?;889		let token = token_id.try_into()?;890		let budget = self891			.recorder892			.weight_calls_budget(<StructureWeight<T>>::find_parent());893894		<Pallet<T>>::burn_from(self, &caller, &from, token, &budget)895			.map_err(dispatch_to_evm::<T>)?;896		Ok(())897	}898899	/// @notice Returns next free NFT ID.900	fn next_token_id(&self) -> Result<uint256> {901		self.consume_store_reads(1)?;902		Ok(<TokensMinted<T>>::get(self.id)903			.checked_add(1)904			.ok_or("item id overflow")?905			.into())906	}907908	/// @notice Function to mint multiple tokens.909	/// @dev `tokenIds` should be an array of consecutive numbers and first number910	///  should be obtained with `nextTokenId` method911	/// @param to The new owner912	/// @param tokenIds IDs of the minted NFTs913	#[solidity(hide)]914	#[weight(<SelfWeightOf<T>>::create_multiple_items(token_ids.len() as u32))]915	fn mint_bulk(&mut self, caller: caller, to: address, token_ids: Vec<uint256>) -> Result<bool> {916		let caller = T::CrossAccountId::from_eth(caller);917		let to = T::CrossAccountId::from_eth(to);918		let mut expected_index = <TokensMinted<T>>::get(self.id)919			.checked_add(1)920			.ok_or("item id overflow")?;921		let budget = self922			.recorder923			.weight_calls_budget(<StructureWeight<T>>::find_parent());924925		let total_tokens = token_ids.len();926		for id in token_ids.into_iter() {927			let id: u32 = id.try_into().map_err(|_| "token id overflow")?;928			if id != expected_index {929				return Err("item id should be next".into());930			}931			expected_index = expected_index.checked_add(1).ok_or("item id overflow")?;932		}933		let data = (0..total_tokens)934			.map(|_| CreateItemData::<T> {935				properties: BoundedVec::default(),936				owner: to.clone(),937			})938			.collect();939940		<Pallet<T>>::create_multiple_items(self, &caller, data, &budget)941			.map_err(dispatch_to_evm::<T>)?;942		Ok(true)943	}944945	/// @notice Function to mint multiple tokens with the given tokenUris.946	/// @dev `tokenIds` is array of pairs of token ID and token URI. Token IDs should be consecutive947	///  numbers and first number should be obtained with `nextTokenId` method948	/// @param to The new owner949	/// @param tokens array of pairs of token ID and token URI for minted tokens950	#[solidity(hide, rename_selector = "mintBulkWithTokenURI")]951	#[weight(<SelfWeightOf<T>>::create_multiple_items(tokens.len() as u32))]952	fn mint_bulk_with_token_uri(953		&mut self,954		caller: caller,955		to: address,956		tokens: Vec<(uint256, string)>,957	) -> Result<bool> {958		let key = key::url();959		let caller = T::CrossAccountId::from_eth(caller);960		let to = T::CrossAccountId::from_eth(to);961		let mut expected_index = <TokensMinted<T>>::get(self.id)962			.checked_add(1)963			.ok_or("item id overflow")?;964		let budget = self965			.recorder966			.weight_calls_budget(<StructureWeight<T>>::find_parent());967968		let mut data = Vec::with_capacity(tokens.len());969		for (id, token_uri) in tokens {970			let id: u32 = id.try_into().map_err(|_| "token id overflow")?;971			if id != expected_index {972				return Err("item id should be next".into());973			}974			expected_index = expected_index.checked_add(1).ok_or("item id overflow")?;975976			let mut properties = CollectionPropertiesVec::default();977			properties978				.try_push(Property {979					key: key.clone(),980					value: token_uri981						.into_bytes()982						.try_into()983						.map_err(|_| "token uri is too long")?,984				})985				.map_err(|e| Error::Revert(alloc::format!("Can't add property: {:?}", e)))?;986987			data.push(CreateItemData::<T> {988				properties,989				owner: to.clone(),990			});991		}992993		<Pallet<T>>::create_multiple_items(self, &caller, data, &budget)994			.map_err(dispatch_to_evm::<T>)?;995		Ok(true)996	}997998	/// @notice Function to mint a token.999	/// @param to The new owner crossAccountId1000	/// @param properties Properties of minted token1001	/// @return uint256 The id of the newly minted token1002	#[weight(<SelfWeightOf<T>>::create_item())]1003	fn mint_cross(1004		&mut self,1005		caller: caller,1006		to: eth::CrossAddress,1007		properties: Vec<eth::Property>,1008	) -> Result<uint256> {1009		let token_id = <TokensMinted<T>>::get(self.id)1010			.checked_add(1)1011			.ok_or("item id overflow")?;10121013		let to = to.into_sub_cross_account::<T>()?;10141015		let properties = properties1016			.into_iter()1017			.map(eth::Property::try_into)1018			.collect::<Result<Vec<_>>>()?1019			.try_into()1020			.map_err(|_| Error::Revert(alloc::format!("too many properties")))?;10211022		let caller = T::CrossAccountId::from_eth(caller);10231024		let budget = self1025			.recorder1026			.weight_calls_budget(<StructureWeight<T>>::find_parent());10271028		<Pallet<T>>::create_item(1029			self,1030			&caller,1031			CreateItemData::<T> {1032				properties,1033				owner: to,1034			},1035			&budget,1036		)1037		.map_err(dispatch_to_evm::<T>)?;10381039		Ok(token_id.into())1040	}10411042	/// @notice Returns collection helper contract address1043	fn collection_helper_address(&self) -> Result<address> {1044		Ok(T::ContractAddress::get())1045	}1046}10471048#[solidity_interface(1049	name = UniqueNFT,1050	is(1051		ERC721,1052		ERC721Enumerable,1053		ERC721UniqueExtensions,1054		ERC721UniqueMintable,1055		ERC721Burnable,1056		ERC721Metadata(if(this.flags.erc721metadata)),1057		Collection(via(common_mut returns CollectionHandle<T>)),1058		TokenProperties,1059	)1060)]1061impl<T: Config> NonfungibleHandle<T> where T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]> {}10621063// Not a tests, but code generators1064generate_stubgen!(gen_impl, UniqueNFTCall<()>, true);1065generate_stubgen!(gen_iface, UniqueNFTCall<()>, false);10661067impl<T: Config> CommonEvmHandler for NonfungibleHandle<T>1068where1069	T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]>,1070{1071	const CODE: &'static [u8] = include_bytes!("./stubs/UniqueNFT.raw");10721073	fn call(self, handle: &mut impl PrecompileHandle) -> Option<PrecompileResult> {1074		call::<T, UniqueNFTCall<T>, _, _>(handle, self)1075	}1076}