git.delta.rocks / unique-network / refs/commits / 24d3f67bfdff

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::{U256, 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: U256,126		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: U256,159		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: U256, 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: U256,213		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: U256, 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: U256,269	},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: U256,281	},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: U256) -> 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: U256) -> Result<U256> {372		Ok(index)373	}374375	/// @dev Not implemented376	fn token_of_owner_by_index(&self, _owner: Address, _index: U256) -> Result<U256> {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<U256> {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<U256> {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: U256) -> 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: U256,425		_data: Bytes,426	) -> Result<()> {427		// TODO: Not implemetable428		Err("not implemented".into())429	}430	/// @dev Not implemented431	fn safe_transfer_from(&mut self, _from: Address, _to: Address, _token_id: U256) -> Result<()> {432		// TODO: Not implemetable433		Err("not implemented".into())434	}435436	/// @notice Transfer ownership of an NFT -- THE CALLER IS RESPONSIBLE437	///  TO CONFIRM THAT `to` IS CAPABLE OF RECEIVING NFTS OR ELSE438	///  THEY MAY BE PERMANENTLY LOST439	/// @dev Throws unless `msg.sender` is the current owner or an authorized440	///  operator for this NFT. Throws if `from` is not the current owner. Throws441	///  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.442	/// @param from The current owner of the NFT443	/// @param to The new owner444	/// @param tokenId The NFT to transfer445	#[weight(<SelfWeightOf<T>>::transfer_from())]446	fn transfer_from(447		&mut self,448		caller: Caller,449		from: Address,450		to: Address,451		token_id: U256,452	) -> Result<()> {453		let caller = T::CrossAccountId::from_eth(caller);454		let from = T::CrossAccountId::from_eth(from);455		let to = T::CrossAccountId::from_eth(to);456		let token = token_id.try_into()?;457		let budget = self458			.recorder459			.weight_calls_budget(<StructureWeight<T>>::find_parent());460461		<Pallet<T>>::transfer_from(self, &caller, &from, &to, token, &budget)462			.map_err(dispatch_to_evm::<T>)?;463		Ok(())464	}465466	/// @notice Set or reaffirm the approved address for an NFT467	/// @dev The zero address indicates there is no approved address.468	/// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized469	///  operator of the current owner.470	/// @param approved The new approved NFT controller471	/// @param tokenId The NFT to approve472	#[weight(<SelfWeightOf<T>>::approve())]473	fn approve(&mut self, caller: Caller, approved: Address, token_id: U256) -> Result<()> {474		let caller = T::CrossAccountId::from_eth(caller);475		let approved = T::CrossAccountId::from_eth(approved);476		let token = token_id.try_into()?;477478		<Pallet<T>>::set_allowance(self, &caller, token, Some(&approved))479			.map_err(dispatch_to_evm::<T>)?;480		Ok(())481	}482483	/// @notice Sets or unsets the approval of a given operator.484	/// The `operator` is allowed to transfer all tokens of the `caller` on their behalf.485	/// @param operator Operator486	/// @param approved Should operator status be granted or revoked?487	#[weight(<SelfWeightOf<T>>::set_allowance_for_all())]488	fn set_approval_for_all(489		&mut self,490		caller: Caller,491		operator: Address,492		approved: bool,493	) -> Result<()> {494		let caller = T::CrossAccountId::from_eth(caller);495		let operator = T::CrossAccountId::from_eth(operator);496497		<Pallet<T>>::set_allowance_for_all(self, &caller, &operator, approved)498			.map_err(dispatch_to_evm::<T>)?;499		Ok(())500	}501502	/// @dev Not implemented503	fn get_approved(&self, _token_id: U256) -> Result<Address> {504		// TODO: Not implemetable505		Err("not implemented".into())506	}507508	/// @notice Tells whether the given `owner` approves the `operator`.509	#[weight(<SelfWeightOf<T>>::allowance_for_all())]510	fn is_approved_for_all(&self, owner: Address, operator: Address) -> Result<bool> {511		let owner = T::CrossAccountId::from_eth(owner);512		let operator = T::CrossAccountId::from_eth(operator);513514		Ok(<Pallet<T>>::allowance_for_all(self, &owner, &operator))515	}516}517518/// @title ERC721 Token that can be irreversibly burned (destroyed).519#[solidity_interface(name = ERC721Burnable)]520impl<T: Config> NonfungibleHandle<T> {521	/// @notice Burns a specific ERC721 token.522	/// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized523	///  operator of the current owner.524	/// @param tokenId The NFT to approve525	#[weight(<SelfWeightOf<T>>::burn_item())]526	fn burn(&mut self, caller: Caller, token_id: U256) -> Result<()> {527		let caller = T::CrossAccountId::from_eth(caller);528		let token = token_id.try_into()?;529530		<Pallet<T>>::burn(self, &caller, token).map_err(dispatch_to_evm::<T>)?;531		Ok(())532	}533}534535/// @title ERC721 minting logic.536#[solidity_interface(name = ERC721UniqueMintable)]537impl<T: Config> NonfungibleHandle<T> {538	/// @notice Function to mint a token.539	/// @param to The new owner540	/// @return uint256 The id of the newly minted token541	#[weight(<SelfWeightOf<T>>::create_item())]542	fn mint(&mut self, caller: Caller, to: Address) -> Result<U256> {543		let token_id: U256 = <TokensMinted<T>>::get(self.id)544			.checked_add(1)545			.ok_or("item id overflow")?546			.into();547		self.mint_check_id(caller, to, token_id)?;548		Ok(token_id)549	}550551	/// @notice Function to mint a token.552	/// @dev `tokenId` should be obtained with `nextTokenId` method,553	///  unlike standard, you can't specify it manually554	/// @param to The new owner555	/// @param tokenId ID of the minted NFT556	#[solidity(hide, rename_selector = "mint")]557	#[weight(<SelfWeightOf<T>>::create_item())]558	fn mint_check_id(&mut self, caller: Caller, to: Address, token_id: U256) -> Result<bool> {559		let caller = T::CrossAccountId::from_eth(caller);560		let to = T::CrossAccountId::from_eth(to);561		let token_id: u32 = token_id.try_into()?;562		let budget = self563			.recorder564			.weight_calls_budget(<StructureWeight<T>>::find_parent());565566		if <TokensMinted<T>>::get(self.id)567			.checked_add(1)568			.ok_or("item id overflow")?569			!= token_id570		{571			return Err("item id should be next".into());572		}573574		<Pallet<T>>::create_item(575			self,576			&caller,577			CreateItemData::<T> {578				properties: BoundedVec::default(),579				owner: to,580			},581			&budget,582		)583		.map_err(dispatch_to_evm::<T>)?;584585		Ok(true)586	}587588	/// @notice Function to mint token with the given tokenUri.589	/// @param to The new owner590	/// @param tokenUri Token URI that would be stored in the NFT properties591	/// @return uint256 The id of the newly minted token592	#[solidity(rename_selector = "mintWithTokenURI")]593	#[weight(<SelfWeightOf<T>>::create_item())]594	fn mint_with_token_uri(595		&mut self,596		caller: Caller,597		to: Address,598		token_uri: String,599	) -> Result<U256> {600		let token_id: U256 = <TokensMinted<T>>::get(self.id)601			.checked_add(1)602			.ok_or("item id overflow")?603			.into();604		self.mint_with_token_uri_check_id(caller, to, token_id, token_uri)?;605		Ok(token_id)606	}607608	/// @notice Function to mint token with the given tokenUri.609	/// @dev `tokenId` should be obtained with `nextTokenId` method,610	///  unlike standard, you can't specify it manually611	/// @param to The new owner612	/// @param tokenId ID of the minted NFT613	/// @param tokenUri Token URI that would be stored in the NFT properties614	#[solidity(hide, rename_selector = "mintWithTokenURI")]615	#[weight(<SelfWeightOf<T>>::create_item())]616	fn mint_with_token_uri_check_id(617		&mut self,618		caller: Caller,619		to: Address,620		token_id: U256,621		token_uri: String,622	) -> Result<bool> {623		let key = key::url();624		let permission = get_token_permission::<T>(self.id, &key)?;625		if !permission.collection_admin {626			return Err("Operation is not allowed".into());627		}628629		let caller = T::CrossAccountId::from_eth(caller);630		let to = T::CrossAccountId::from_eth(to);631		let token_id: u32 = token_id.try_into().map_err(|_| "amount overflow")?;632		let budget = self633			.recorder634			.weight_calls_budget(<StructureWeight<T>>::find_parent());635636		if <TokensMinted<T>>::get(self.id)637			.checked_add(1)638			.ok_or("item id overflow")?639			!= token_id640		{641			return Err("item id should be next".into());642		}643644		let mut properties = CollectionPropertiesVec::default();645		properties646			.try_push(Property {647				key,648				value: token_uri649					.into_bytes()650					.try_into()651					.map_err(|_| "token uri is too long")?,652			})653			.map_err(|e| Error::Revert(alloc::format!("Can't add property: {:?}", e)))?;654655		<Pallet<T>>::create_item(656			self,657			&caller,658			CreateItemData::<T> {659				properties,660				owner: to,661			},662			&budget,663		)664		.map_err(dispatch_to_evm::<T>)?;665		Ok(true)666	}667}668669fn get_token_property<T: Config>(670	collection: &CollectionHandle<T>,671	token_id: u32,672	key: &up_data_structs::PropertyKey,673) -> Result<String> {674	collection.consume_store_reads(1)?;675	let properties = <TokenProperties<T>>::try_get((collection.id, token_id))676		.map_err(|_| Error::Revert("Token properties not found".into()))?;677	if let Some(property) = properties.get(key) {678		return Ok(String::from_utf8_lossy(property).into());679	}680681	Err("Property tokenURI not found".into())682}683684fn get_token_permission<T: Config>(685	collection_id: CollectionId,686	key: &PropertyKey,687) -> Result<PropertyPermission> {688	let token_property_permissions = CollectionPropertyPermissions::<T>::try_get(collection_id)689		.map_err(|_| Error::Revert("No permissions for collection".into()))?;690	let a = token_property_permissions691		.get(key)692		.map(Clone::clone)693		.ok_or_else(|| {694			let key = String::from_utf8(key.clone().into_inner()).unwrap_or_default();695			Error::Revert(alloc::format!("No permission for key {}", key))696		})?;697	Ok(a)698}699700/// @title Unique extensions for ERC721.701#[solidity_interface(name = ERC721UniqueExtensions)]702impl<T: Config> NonfungibleHandle<T>703where704	T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]>,705{706	/// @notice A descriptive name for a collection of NFTs in this contract707	fn name(&self) -> Result<String> {708		Ok(decode_utf16(self.name.iter().copied())709			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))710			.collect::<String>())711	}712713	/// @notice An abbreviated name for NFTs in this contract714	fn symbol(&self) -> Result<String> {715		Ok(String::from_utf8_lossy(&self.token_prefix).into())716	}717718	/// @notice A description for the collection.719	fn description(&self) -> Result<String> {720		Ok(decode_utf16(self.description.iter().copied())721			.map(|r| r.unwrap_or(REPLACEMENT_CHARACTER))722			.collect::<String>())723	}724725	/// Returns the owner (in cross format) of the token.726	///727	/// @param tokenId Id for the token.728	fn cross_owner_of(&self, token_id: U256) -> Result<eth::CrossAddress> {729		Self::token_owner(&self, token_id.try_into()?)730			.map(|o| eth::CrossAddress::from_sub_cross_account::<T>(&o))731			.map_err(|_| Error::Revert("token not found".into()))732	}733734	/// Returns the token properties.735	///736	/// @param tokenId Id for the token.737	/// @param keys Properties keys. Empty keys for all propertyes.738	/// @return Vector of properties key/value pairs.739	fn properties(&self, token_id: U256, keys: Vec<String>) -> Result<Vec<eth::Property>> {740		let keys = keys741			.into_iter()742			.map(|key| {743				<Vec<u8>>::from(key)744					.try_into()745					.map_err(|_| Error::Revert("key too large".into()))746			})747			.collect::<Result<Vec<_>>>()?;748749		<Self as CommonCollectionOperations<T>>::token_properties(750			&self,751			token_id.try_into()?,752			if keys.is_empty() { None } else { Some(keys) },753		)754		.into_iter()755		.map(eth::Property::try_from)756		.collect::<Result<Vec<_>>>()757	}758759	/// @notice Set or reaffirm the approved address for an NFT760	/// @dev The zero address indicates there is no approved address.761	/// @dev Throws unless `msg.sender` is the current NFT owner, or an authorized762	///  operator of the current owner.763	/// @param approved The new substrate address approved NFT controller764	/// @param tokenId The NFT to approve765	#[weight(<SelfWeightOf<T>>::approve())]766	fn approve_cross(767		&mut self,768		caller: Caller,769		approved: eth::CrossAddress,770		token_id: U256,771	) -> Result<()> {772		let caller = T::CrossAccountId::from_eth(caller);773		let approved = approved.into_sub_cross_account::<T>()?;774		let token = token_id.try_into()?;775776		<Pallet<T>>::set_allowance(self, &caller, token, Some(&approved))777			.map_err(dispatch_to_evm::<T>)?;778		Ok(())779	}780781	/// @notice Transfer ownership of an NFT782	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`783	///  is the zero address. Throws if `tokenId` is not a valid NFT.784	/// @param to The new owner785	/// @param tokenId The NFT to transfer786	#[weight(<SelfWeightOf<T>>::transfer())]787	fn transfer(&mut self, caller: Caller, to: Address, token_id: U256) -> Result<()> {788		let caller = T::CrossAccountId::from_eth(caller);789		let to = T::CrossAccountId::from_eth(to);790		let token = token_id.try_into()?;791		let budget = self792			.recorder793			.weight_calls_budget(<StructureWeight<T>>::find_parent());794795		<Pallet<T>>::transfer(self, &caller, &to, token, &budget).map_err(dispatch_to_evm::<T>)?;796		Ok(())797	}798799	/// @notice Transfer ownership of an NFT800	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`801	///  is the zero address. Throws if `tokenId` is not a valid NFT.802	/// @param to The new owner803	/// @param tokenId The NFT to transfer804	#[weight(<SelfWeightOf<T>>::transfer())]805	fn transfer_cross(806		&mut self,807		caller: Caller,808		to: eth::CrossAddress,809		token_id: U256,810	) -> Result<()> {811		let caller = T::CrossAccountId::from_eth(caller);812		let to = to.into_sub_cross_account::<T>()?;813		let token = token_id.try_into()?;814		let budget = self815			.recorder816			.weight_calls_budget(<StructureWeight<T>>::find_parent());817818		<Pallet<T>>::transfer(self, &caller, &to, token, &budget).map_err(dispatch_to_evm::<T>)?;819		Ok(())820	}821822	/// @notice Transfer ownership of an NFT from cross account address to cross account address823	/// @dev Throws unless `msg.sender` is the current owner. Throws if `to`824	///  is the zero address. Throws if `tokenId` is not a valid NFT.825	/// @param from Cross acccount address of current owner826	/// @param to Cross acccount address of new owner827	/// @param tokenId The NFT to transfer828	#[weight(<SelfWeightOf<T>>::transfer())]829	fn transfer_from_cross(830		&mut self,831		caller: Caller,832		from: eth::CrossAddress,833		to: eth::CrossAddress,834		token_id: U256,835	) -> Result<()> {836		let caller = T::CrossAccountId::from_eth(caller);837		let from = from.into_sub_cross_account::<T>()?;838		let to = to.into_sub_cross_account::<T>()?;839		let token_id = token_id.try_into()?;840		let budget = self841			.recorder842			.weight_calls_budget(<StructureWeight<T>>::find_parent());843		Pallet::<T>::transfer_from(self, &caller, &from, &to, token_id, &budget)844			.map_err(dispatch_to_evm::<T>)?;845		Ok(())846	}847848	/// @notice Burns a specific ERC721 token.849	/// @dev Throws unless `msg.sender` is the current owner or an authorized850	///  operator for this NFT. Throws if `from` is not the current owner. Throws851	///  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.852	/// @param from The current owner of the NFT853	/// @param tokenId The NFT to transfer854	#[solidity(hide)]855	#[weight(<SelfWeightOf<T>>::burn_from())]856	fn burn_from(&mut self, caller: Caller, from: Address, token_id: U256) -> Result<()> {857		let caller = T::CrossAccountId::from_eth(caller);858		let from = T::CrossAccountId::from_eth(from);859		let token = token_id.try_into()?;860		let budget = self861			.recorder862			.weight_calls_budget(<StructureWeight<T>>::find_parent());863864		<Pallet<T>>::burn_from(self, &caller, &from, token, &budget)865			.map_err(dispatch_to_evm::<T>)?;866		Ok(())867	}868869	/// @notice Burns a specific ERC721 token.870	/// @dev Throws unless `msg.sender` is the current owner or an authorized871	///  operator for this NFT. Throws if `from` is not the current owner. Throws872	///  if `to` is the zero address. Throws if `tokenId` is not a valid NFT.873	/// @param from The current owner of the NFT874	/// @param tokenId The NFT to transfer875	#[weight(<SelfWeightOf<T>>::burn_from())]876	fn burn_from_cross(877		&mut self,878		caller: Caller,879		from: eth::CrossAddress,880		token_id: U256,881	) -> Result<()> {882		let caller = T::CrossAccountId::from_eth(caller);883		let from = from.into_sub_cross_account::<T>()?;884		let token = token_id.try_into()?;885		let budget = self886			.recorder887			.weight_calls_budget(<StructureWeight<T>>::find_parent());888889		<Pallet<T>>::burn_from(self, &caller, &from, token, &budget)890			.map_err(dispatch_to_evm::<T>)?;891		Ok(())892	}893894	/// @notice Returns next free NFT ID.895	fn next_token_id(&self) -> Result<U256> {896		self.consume_store_reads(1)?;897		Ok(<TokensMinted<T>>::get(self.id)898			.checked_add(1)899			.ok_or("item id overflow")?900			.into())901	}902903	/// @notice Function to mint multiple tokens.904	/// @dev `tokenIds` should be an array of consecutive numbers and first number905	///  should be obtained with `nextTokenId` method906	/// @param to The new owner907	/// @param tokenIds IDs of the minted NFTs908	#[solidity(hide)]909	#[weight(<SelfWeightOf<T>>::create_multiple_items(token_ids.len() as u32))]910	fn mint_bulk(&mut self, caller: Caller, to: Address, token_ids: Vec<U256>) -> Result<bool> {911		let caller = T::CrossAccountId::from_eth(caller);912		let to = T::CrossAccountId::from_eth(to);913		let mut expected_index = <TokensMinted<T>>::get(self.id)914			.checked_add(1)915			.ok_or("item id overflow")?;916		let budget = self917			.recorder918			.weight_calls_budget(<StructureWeight<T>>::find_parent());919920		let total_tokens = token_ids.len();921		for id in token_ids.into_iter() {922			let id: u32 = id.try_into().map_err(|_| "token id overflow")?;923			if id != expected_index {924				return Err("item id should be next".into());925			}926			expected_index = expected_index.checked_add(1).ok_or("item id overflow")?;927		}928		let data = (0..total_tokens)929			.map(|_| CreateItemData::<T> {930				properties: BoundedVec::default(),931				owner: to.clone(),932			})933			.collect();934935		<Pallet<T>>::create_multiple_items(self, &caller, data, &budget)936			.map_err(dispatch_to_evm::<T>)?;937		Ok(true)938	}939940	/// @notice Function to mint multiple tokens with the given tokenUris.941	/// @dev `tokenIds` is array of pairs of token ID and token URI. Token IDs should be consecutive942	///  numbers and first number should be obtained with `nextTokenId` method943	/// @param to The new owner944	/// @param tokens array of pairs of token ID and token URI for minted tokens945	#[solidity(hide, rename_selector = "mintBulkWithTokenURI")]946	#[weight(<SelfWeightOf<T>>::create_multiple_items(tokens.len() as u32))]947	fn mint_bulk_with_token_uri(948		&mut self,949		caller: Caller,950		to: Address,951		tokens: Vec<(U256, String)>,952	) -> Result<bool> {953		let key = key::url();954		let caller = T::CrossAccountId::from_eth(caller);955		let to = T::CrossAccountId::from_eth(to);956		let mut expected_index = <TokensMinted<T>>::get(self.id)957			.checked_add(1)958			.ok_or("item id overflow")?;959		let budget = self960			.recorder961			.weight_calls_budget(<StructureWeight<T>>::find_parent());962963		let mut data = Vec::with_capacity(tokens.len());964		for (id, token_uri) in tokens {965			let id: u32 = id.try_into().map_err(|_| "token id overflow")?;966			if id != expected_index {967				return Err("item id should be next".into());968			}969			expected_index = expected_index.checked_add(1).ok_or("item id overflow")?;970971			let mut properties = CollectionPropertiesVec::default();972			properties973				.try_push(Property {974					key: key.clone(),975					value: token_uri976						.into_bytes()977						.try_into()978						.map_err(|_| "token uri is too long")?,979				})980				.map_err(|e| Error::Revert(alloc::format!("Can't add property: {:?}", e)))?;981982			data.push(CreateItemData::<T> {983				properties,984				owner: to.clone(),985			});986		}987988		<Pallet<T>>::create_multiple_items(self, &caller, data, &budget)989			.map_err(dispatch_to_evm::<T>)?;990		Ok(true)991	}992993	/// @notice Function to mint a token.994	/// @param to The new owner crossAccountId995	/// @param properties Properties of minted token996	/// @return uint256 The id of the newly minted token997	#[weight(<SelfWeightOf<T>>::create_item())]998	fn mint_cross(999		&mut self,1000		caller: Caller,1001		to: eth::CrossAddress,1002		properties: Vec<eth::Property>,1003	) -> Result<U256> {1004		let token_id = <TokensMinted<T>>::get(self.id)1005			.checked_add(1)1006			.ok_or("item id overflow")?;10071008		let to = to.into_sub_cross_account::<T>()?;10091010		let properties = properties1011			.into_iter()1012			.map(eth::Property::try_into)1013			.collect::<Result<Vec<_>>>()?1014			.try_into()1015			.map_err(|_| Error::Revert(alloc::format!("too many properties")))?;10161017		let caller = T::CrossAccountId::from_eth(caller);10181019		let budget = self1020			.recorder1021			.weight_calls_budget(<StructureWeight<T>>::find_parent());10221023		<Pallet<T>>::create_item(1024			self,1025			&caller,1026			CreateItemData::<T> {1027				properties,1028				owner: to,1029			},1030			&budget,1031		)1032		.map_err(dispatch_to_evm::<T>)?;10331034		Ok(token_id.into())1035	}10361037	/// @notice Returns collection helper contract address1038	fn collection_helper_address(&self) -> Result<Address> {1039		Ok(T::ContractAddress::get())1040	}1041}10421043#[solidity_interface(1044	name = UniqueNFT,1045	is(1046		ERC721,1047		ERC721Enumerable,1048		ERC721UniqueExtensions,1049		ERC721UniqueMintable,1050		ERC721Burnable,1051		ERC721Metadata(if(this.flags.erc721metadata)),1052		Collection(via(common_mut returns CollectionHandle<T>)),1053		TokenProperties,1054	)1055)]1056impl<T: Config> NonfungibleHandle<T> where T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]> {}10571058// Not a tests, but code generators1059generate_stubgen!(gen_impl, UniqueNFTCall<()>, true);1060generate_stubgen!(gen_iface, UniqueNFTCall<()>, false);10611062impl<T: Config> CommonEvmHandler for NonfungibleHandle<T>1063where1064	T::AccountId: From<[u8; 32]> + AsRef<[u8; 32]>,1065{1066	const CODE: &'static [u8] = include_bytes!("./stubs/UniqueNFT.raw");10671068	fn call(self, handle: &mut impl PrecompileHandle) -> Option<PrecompileResult> {1069		call::<T, UniqueNFTCall<T>, _, _>(handle, self)1070	}1071}