git.delta.rocks / unique-network / refs/commits / 1946e45ceb05

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#![cfg_attr(not(feature = "std"), no_std)]1819use frame_support::{pallet_prelude::*, transactional, BoundedVec, dispatch::DispatchResult};20use frame_system::{pallet_prelude::*, ensure_signed};21use sp_runtime::{DispatchError, Permill, traits::StaticLookup};22use sp_std::vec::Vec;23use up_data_structs::{*, mapping::TokenAddressMapping};24use pallet_common::{25	Pallet as PalletCommon, Error as CommonError, CollectionHandle, CommonCollectionOperations,26};27use pallet_nonfungible::{Pallet as PalletNft, NonfungibleHandle, TokenData};28use pallet_structure::{Pallet as PalletStructure, Error as StructureError};29use pallet_evm::account::CrossAccountId;30use core::convert::AsRef;3132pub use pallet::*;3334#[cfg(feature = "runtime-benchmarks")]35pub mod benchmarking;36pub mod misc;37pub mod property;38pub mod weights;3940pub type SelfWeightOf<T> = <T as Config>::WeightInfo;4142use weights::WeightInfo;43use misc::*;44pub use property::*;4546use RmrkProperty::*;4748pub const NESTING_BUDGET: u32 = 5;4950#[frame_support::pallet]51pub mod pallet {52	use super::*;53	use pallet_evm::account;5455	#[pallet::config]56	pub trait Config:57		frame_system::Config + pallet_common::Config + pallet_nonfungible::Config + account::Config58	{59		type Event: From<Event<Self>> + IsType<<Self as frame_system::Config>::Event>;60		type WeightInfo: WeightInfo;61	}6263	#[pallet::storage]64	#[pallet::getter(fn collection_index)]65	pub type CollectionIndex<T: Config> = StorageValue<_, RmrkCollectionId, ValueQuery>;6667	#[pallet::storage]68	pub type UniqueCollectionId<T: Config> =69		StorageMap<_, Twox64Concat, RmrkCollectionId, CollectionId, ValueQuery>;7071	#[pallet::pallet]72	#[pallet::generate_store(pub(super) trait Store)]73	pub struct Pallet<T>(_);7475	#[pallet::event]76	#[pallet::generate_deposit(pub(super) fn deposit_event)]77	pub enum Event<T: Config> {78		CollectionCreated {79			issuer: T::AccountId,80			collection_id: RmrkCollectionId,81		},82		CollectionDestroyed {83			issuer: T::AccountId,84			collection_id: RmrkCollectionId,85		},86		IssuerChanged {87			old_issuer: T::AccountId,88			new_issuer: T::AccountId,89			collection_id: RmrkCollectionId,90		},91		CollectionLocked {92			issuer: T::AccountId,93			collection_id: RmrkCollectionId,94		},95		NftMinted {96			owner: T::AccountId,97			collection_id: RmrkCollectionId,98			nft_id: RmrkNftId,99		},100		NFTBurned {101			owner: T::AccountId,102			nft_id: RmrkNftId,103		},104		NFTSent {105			sender: T::AccountId,106			recipient: RmrkAccountIdOrCollectionNftTuple<T::AccountId>,107			collection_id: RmrkCollectionId,108			nft_id: RmrkNftId,109			approval_required: bool,110		},111		NFTAccepted {112			sender: T::AccountId,113			recipient: RmrkAccountIdOrCollectionNftTuple<T::AccountId>,114			collection_id: RmrkCollectionId,115			nft_id: RmrkNftId,116		},117		NFTRejected {118			sender: T::AccountId,119			collection_id: RmrkCollectionId,120			nft_id: RmrkNftId,121		},122		PropertySet {123			collection_id: RmrkCollectionId,124			maybe_nft_id: Option<RmrkNftId>,125			key: RmrkKeyString,126			value: RmrkValueString,127		},128		ResourceAdded {129			nft_id: RmrkNftId,130			resource_id: RmrkResourceId,131		},132		ResourceRemoval {133			nft_id: RmrkNftId,134			resource_id: RmrkResourceId,135		},136		ResourceAccepted {137			nft_id: RmrkNftId,138			resource_id: RmrkResourceId,139		},140		ResourceRemovalAccepted {141			nft_id: RmrkNftId,142			resource_id: RmrkResourceId,143		},144		PrioritySet {145			collection_id: RmrkCollectionId,146			nft_id: RmrkNftId,147		},148	}149150	#[pallet::error]151	pub enum Error<T> {152		/* Unique-specific events */153		CorruptedCollectionType,154		NftTypeEncodeError,155		RmrkPropertyKeyIsTooLong,156		RmrkPropertyValueIsTooLong,157		UnableToDecodeRmrkData,158159		/* RMRK compatible events */160		CollectionNotEmpty,161		NoAvailableCollectionId,162		NoAvailableNftId,163		CollectionUnknown,164		NoPermission,165		NonTransferable,166		CollectionFullOrLocked,167		ResourceDoesntExist,168		CannotSendToDescendentOrSelf,169		CannotAcceptNonOwnedNft,170		CannotRejectNonOwnedNft,171		ResourceNotPending,172	}173174	#[pallet::call]175	impl<T: Config> Pallet<T> {176		/// Create a collection177		#[transactional]178		#[pallet::weight(<SelfWeightOf<T>>::create_collection())]179		pub fn create_collection(180			origin: OriginFor<T>,181			metadata: RmrkString,182			max: Option<u32>,183			symbol: RmrkCollectionSymbol,184		) -> DispatchResult {185			let sender = ensure_signed(origin)?;186187			let limits = CollectionLimits {188				owner_can_transfer: Some(false),189				token_limit: max,190				..Default::default()191			};192193			let data = CreateCollectionData {194				limits: Some(limits),195				token_prefix: symbol196					.into_inner()197					.try_into()198					.map_err(|_| <CommonError<T>>::CollectionTokenPrefixLimitExceeded)?,199				permissions: Some(CollectionPermissions {200					nesting: Some(NestingPermissions {201						token_owner: true,202						admin: false,203						restricted: None,204205						permissive: false,206					}),207					..Default::default()208				}),209				..Default::default()210			};211212			let unique_collection_id = Self::init_collection(213				T::CrossAccountId::from_sub(sender.clone()),214				data,215				[216					Self::rmrk_property(Metadata, &metadata)?,217					Self::rmrk_property(CollectionType, &misc::CollectionType::Regular)?,218				]219				.into_iter(),220			)?;221			let rmrk_collection_id = <CollectionIndex<T>>::get();222223			<UniqueCollectionId<T>>::insert(rmrk_collection_id, unique_collection_id);224225			<PalletCommon<T>>::set_scoped_collection_property(226				unique_collection_id,227				PropertyScope::Rmrk,228				Self::rmrk_property(RmrkInternalCollectionId, &rmrk_collection_id)?,229			)?;230231			<CollectionIndex<T>>::mutate(|n| *n += 1);232233			Self::deposit_event(Event::CollectionCreated {234				issuer: sender,235				collection_id: rmrk_collection_id,236			});237238			Ok(())239		}240241		/// destroy collection242		#[transactional]243		#[pallet::weight(<SelfWeightOf<T>>::destroy_collection())]244		pub fn destroy_collection(245			origin: OriginFor<T>,246			collection_id: RmrkCollectionId,247		) -> DispatchResult {248			let sender = ensure_signed(origin)?;249			let cross_sender = T::CrossAccountId::from_sub(sender.clone());250251			let collection = Self::get_typed_nft_collection(252				Self::unique_collection_id(collection_id)?,253				misc::CollectionType::Regular,254			)?;255			collection.check_is_external()?;256257			<PalletNft<T>>::destroy_collection(collection, &cross_sender)258				.map_err(Self::map_unique_err_to_proxy)?;259260			Self::deposit_event(Event::CollectionDestroyed {261				issuer: sender,262				collection_id,263			});264265			Ok(())266		}267268		/// Change the issuer of a collection269		///270		/// Parameters:271		/// - `origin`: sender of the transaction272		/// - `collection_id`: collection id of the nft to change issuer of273		/// - `new_issuer`: Collection's new issuer274		#[transactional]275		#[pallet::weight(<SelfWeightOf<T>>::change_collection_issuer())]276		pub fn change_collection_issuer(277			origin: OriginFor<T>,278			collection_id: RmrkCollectionId,279			new_issuer: <T::Lookup as StaticLookup>::Source,280		) -> DispatchResult {281			let sender = ensure_signed(origin)?;282283			let collection = Self::get_nft_collection(Self::unique_collection_id(collection_id)?)?;284			collection.check_is_external()?;285286			let new_issuer = T::Lookup::lookup(new_issuer)?;287288			Self::change_collection_owner(289				Self::unique_collection_id(collection_id)?,290				misc::CollectionType::Regular,291				sender.clone(),292				new_issuer.clone(),293			)?;294295			Self::deposit_event(Event::IssuerChanged {296				old_issuer: sender,297				new_issuer,298				collection_id,299			});300301			Ok(())302		}303304		/// lock collection305		#[transactional]306		#[pallet::weight(<SelfWeightOf<T>>::lock_collection())]307		pub fn lock_collection(308			origin: OriginFor<T>,309			collection_id: RmrkCollectionId,310		) -> DispatchResult {311			let sender = ensure_signed(origin)?;312			let cross_sender = T::CrossAccountId::from_sub(sender.clone());313314			let collection = Self::get_typed_nft_collection(315				Self::unique_collection_id(collection_id)?,316				misc::CollectionType::Regular,317			)?;318			collection.check_is_external()?;319320			Self::check_collection_owner(&collection, &cross_sender)?;321322			let token_count = collection.total_supply();323324			let mut collection = collection.into_inner();325			collection.limits.token_limit = Some(token_count);326			collection.save()?;327328			Self::deposit_event(Event::CollectionLocked {329				issuer: sender,330				collection_id,331			});332333			Ok(())334		}335336		/// Mints an NFT in the specified collection337		/// Sets metadata and the royalty attribute338		///339		/// Parameters:340		/// - `collection_id`: The class of the asset to be minted.341		/// - `nft_id`: The nft value of the asset to be minted.342		/// - `recipient`: Receiver of the royalty343		/// - `royalty`: Permillage reward from each trade for the Recipient344		/// - `metadata`: Arbitrary data about an nft, e.g. IPFS hash345		/// - `transferable`: Ability to transfer this NFT346		#[transactional]347		#[pallet::weight(<SelfWeightOf<T>>::mint_nft())]348		pub fn mint_nft(349			origin: OriginFor<T>,350			owner: T::AccountId,351			collection_id: RmrkCollectionId,352			recipient: Option<T::AccountId>,353			royalty_amount: Option<Permill>,354			metadata: RmrkString,355			transferable: bool,356		) -> DispatchResult {357			let sender = ensure_signed(origin)?;358			let sender = T::CrossAccountId::from_sub(sender);359			let cross_owner = T::CrossAccountId::from_sub(owner.clone());360361			let collection = Self::get_typed_nft_collection(362				Self::unique_collection_id(collection_id)?,363				misc::CollectionType::Regular,364			)?;365			collection.check_is_external()?;366367			let royalty_info = royalty_amount.map(|amount| rmrk_traits::RoyaltyInfo {368				recipient: recipient.unwrap_or_else(|| owner.clone()),369				amount,370			});371372			let nft_id = Self::create_nft(373				&sender,374				&cross_owner,375				&collection,376				[377					Self::rmrk_property(TokenType, &NftType::Regular)?,378					Self::rmrk_property(Transferable, &transferable)?,379					Self::rmrk_property(PendingNftAccept, &false)?,380					Self::rmrk_property(RoyaltyInfo, &royalty_info)?,381					Self::rmrk_property(Metadata, &metadata)?,382					Self::rmrk_property(Equipped, &false)?,383					Self::rmrk_property(ResourceCollection, &None::<CollectionId>)?,384					Self::rmrk_property(ResourcePriorities, &<Vec<u8>>::new())?,385				]386				.into_iter(),387			)388			.map_err(|err| match err {389				DispatchError::Arithmetic(_) => <Error<T>>::NoAvailableNftId.into(),390				err => Self::map_unique_err_to_proxy(err),391			})?;392393			Self::deposit_event(Event::NftMinted {394				owner,395				collection_id,396				nft_id: nft_id.0,397			});398399			Ok(())400		}401402		/// burn nft403		#[transactional]404		#[pallet::weight(<SelfWeightOf<T>>::burn_nft(*max_burns))]405		pub fn burn_nft(406			origin: OriginFor<T>,407			collection_id: RmrkCollectionId,408			nft_id: RmrkNftId,409			max_burns: u32,410		) -> DispatchResult {411			let sender = ensure_signed(origin)?;412			let cross_sender = T::CrossAccountId::from_sub(sender.clone());413414			let collection = Self::get_typed_nft_collection(415				Self::unique_collection_id(collection_id)?,416				misc::CollectionType::Regular,417			)?;418			collection.check_is_external()?;419420			Self::destroy_nft(421				cross_sender,422				Self::unique_collection_id(collection_id)?,423				nft_id.into(),424				max_burns,425				<Error<T>>::NoPermission,426			)427			.map_err(|err| Self::map_unique_err_to_proxy(err.error))?;428429			Self::deposit_event(Event::NFTBurned {430				owner: sender,431				nft_id,432			});433434			Ok(())435		}436437		/// Transfers a NFT from an Account or NFT A to another Account or NFT B438		///439		/// Parameters:440		/// - `origin`: sender of the transaction441		/// - `rmrk_collection_id`: collection id of the nft to be transferred442		/// - `rmrk_nft_id`: nft id of the nft to be transferred443		/// - `new_owner`: new owner of the nft which can be either an account or a NFT444		#[transactional]445		#[pallet::weight(<SelfWeightOf<T>>::send())]446		pub fn send(447			origin: OriginFor<T>,448			rmrk_collection_id: RmrkCollectionId,449			rmrk_nft_id: RmrkNftId,450			new_owner: RmrkAccountIdOrCollectionNftTuple<T::AccountId>,451		) -> DispatchResult {452			let sender = ensure_signed(origin.clone())?;453			let cross_sender = T::CrossAccountId::from_sub(sender.clone());454455			let collection_id = Self::unique_collection_id(rmrk_collection_id)?;456			let nft_id = rmrk_nft_id.into();457458			let collection =459				Self::get_typed_nft_collection(collection_id, misc::CollectionType::Regular)?;460			collection.check_is_external()?;461462			let token_data =463				<TokenData<T>>::get((collection_id, nft_id)).ok_or(<Error<T>>::NoAvailableNftId)?;464465			let from = token_data.owner;466467			ensure!(468				Self::get_nft_property_decoded(collection_id, nft_id, RmrkProperty::Transferable)?,469				<Error<T>>::NonTransferable470			);471472			ensure!(473				!Self::get_nft_property_decoded(474					collection_id,475					nft_id,476					RmrkProperty::PendingNftAccept477				)?,478				<Error<T>>::NoPermission479			);480481			let target_owner;482			let approval_required;483484			match new_owner {485				RmrkAccountIdOrCollectionNftTuple::AccountId(ref account_id) => {486					target_owner = T::CrossAccountId::from_sub(account_id.clone());487					approval_required = false;488				}489				RmrkAccountIdOrCollectionNftTuple::CollectionAndNftTuple(490					target_collection_id,491					target_nft_id,492				) => {493					let target_collection_id = Self::unique_collection_id(target_collection_id)?;494495					let target_nft_budget = budget::Value::new(NESTING_BUDGET);496497					let target_nft_owner = <PalletStructure<T>>::get_checked_topmost_owner(498						target_collection_id,499						target_nft_id.into(),500						Some((collection_id, nft_id)),501						&target_nft_budget,502					)503					.map_err(Self::map_unique_err_to_proxy)?;504505					approval_required = cross_sender != target_nft_owner;506507					if approval_required {508						target_owner = target_nft_owner;509510						<PalletNft<T>>::set_scoped_token_property(511							collection.id,512							nft_id,513							PropertyScope::Rmrk,514							Self::rmrk_property(PendingNftAccept, &approval_required)?,515						)?;516					} else {517						target_owner = T::CrossTokenAddressMapping::token_to_address(518							target_collection_id,519							target_nft_id.into(),520						);521					}522				}523			}524525			let src_nft_budget = budget::Value::new(NESTING_BUDGET);526527			<PalletNft<T>>::transfer_from(528				&collection,529				&cross_sender,530				&from,531				&target_owner,532				nft_id,533				&src_nft_budget,534			)535			.map_err(Self::map_unique_err_to_proxy)?;536537			Self::deposit_event(Event::NFTSent {538				sender,539				recipient: new_owner,540				collection_id: rmrk_collection_id,541				nft_id: rmrk_nft_id,542				approval_required,543			});544545			Ok(())546		}547548		/// Accepts an NFT sent from another account to self or owned NFT549		///550		/// Parameters:551		/// - `origin`: sender of the transaction552		/// - `rmrk_collection_id`: collection id of the nft to be accepted553		/// - `rmrk_nft_id`: nft id of the nft to be accepted554		/// - `new_owner`: either origin's account ID or origin-owned NFT, whichever the NFT was555		///   sent to556		#[transactional]557		#[pallet::weight(<SelfWeightOf<T>>::accept_nft())]558		pub fn accept_nft(559			origin: OriginFor<T>,560			rmrk_collection_id: RmrkCollectionId,561			rmrk_nft_id: RmrkNftId,562			new_owner: RmrkAccountIdOrCollectionNftTuple<T::AccountId>,563		) -> DispatchResult {564			let sender = ensure_signed(origin.clone())?;565			let cross_sender = T::CrossAccountId::from_sub(sender.clone());566567			let collection_id = Self::unique_collection_id(rmrk_collection_id)?;568			let nft_id = rmrk_nft_id.into();569570			let collection =571				Self::get_typed_nft_collection(collection_id, misc::CollectionType::Regular)?;572			collection.check_is_external()?;573574			let new_cross_owner = match new_owner {575				RmrkAccountIdOrCollectionNftTuple::AccountId(ref account_id) => {576					T::CrossAccountId::from_sub(account_id.clone())577				}578				RmrkAccountIdOrCollectionNftTuple::CollectionAndNftTuple(579					target_collection_id,580					target_nft_id,581				) => {582					let target_collection_id = Self::unique_collection_id(target_collection_id)?;583584					T::CrossTokenAddressMapping::token_to_address(585						target_collection_id,586						TokenId(target_nft_id),587					)588				}589			};590591			let budget = budget::Value::new(NESTING_BUDGET);592593			<PalletNft<T>>::transfer(594				&collection,595				&cross_sender,596				&new_cross_owner,597				nft_id,598				&budget,599			)600			.map_err(|err| {601				if err == <CommonError<T>>::UserIsNotAllowedToNest.into() {602					<Error<T>>::CannotAcceptNonOwnedNft.into()603				} else {604					Self::map_unique_err_to_proxy(err)605				}606			})?;607608			<PalletNft<T>>::set_scoped_token_property(609				collection.id,610				nft_id,611				PropertyScope::Rmrk,612				Self::rmrk_property(PendingNftAccept, &false)?,613			)?;614615			Self::deposit_event(Event::NFTAccepted {616				sender,617				recipient: new_owner,618				collection_id: rmrk_collection_id,619				nft_id: rmrk_nft_id,620			});621622			Ok(())623		}624625		/// Rejects an NFT sent from another account to self or owned NFT626		///627		/// Parameters:628		/// - `origin`: sender of the transaction629		/// - `rmrk_collection_id`: collection id of the nft to be accepted630		/// - `rmrk_nft_id`: nft id of the nft to be accepted631		#[transactional]632		#[pallet::weight(<SelfWeightOf<T>>::reject_nft())]633		pub fn reject_nft(634			origin: OriginFor<T>,635			rmrk_collection_id: RmrkCollectionId,636			rmrk_nft_id: RmrkNftId,637		) -> DispatchResult {638			let sender = ensure_signed(origin)?;639			let cross_sender = T::CrossAccountId::from_sub(sender.clone());640641			let collection_id = Self::unique_collection_id(rmrk_collection_id)?;642			let nft_id = rmrk_nft_id.into();643644			let collection =645				Self::get_typed_nft_collection(collection_id, misc::CollectionType::Regular)?;646			collection.check_is_external()?;647648			ensure!(649				Self::get_nft_property_decoded(650					collection_id,651					nft_id,652					RmrkProperty::PendingNftAccept653				)?,654				<Error<T>>::NoPermission655			);656657			Self::destroy_nft(658				cross_sender,659				collection_id,660				nft_id,661				NESTING_BUDGET,662				<Error<T>>::CannotRejectNonOwnedNft,663			)664			.map_err(|err| Self::map_unique_err_to_proxy(err.error))?;665666			Self::deposit_event(Event::NFTRejected {667				sender,668				collection_id: rmrk_collection_id,669				nft_id: rmrk_nft_id,670			});671672			Ok(())673		}674675		/// accept the addition of a new resource to an existing NFT676		#[transactional]677		#[pallet::weight(<SelfWeightOf<T>>::accept_resource())]678		pub fn accept_resource(679			origin: OriginFor<T>,680			rmrk_collection_id: RmrkCollectionId,681			rmrk_nft_id: RmrkNftId,682			rmrk_resource_id: RmrkResourceId,683		) -> DispatchResult {684			let sender = ensure_signed(origin)?;685			let cross_sender = T::CrossAccountId::from_sub(sender);686687			let collection_id = Self::unique_collection_id(rmrk_collection_id)688				.map_err(|_| <Error<T>>::ResourceDoesntExist)?;689			let collection =690				Self::get_typed_nft_collection(collection_id, misc::CollectionType::Regular)?;691			collection.check_is_external()?;692693			let nft_id = rmrk_nft_id.into();694			let resource_id = rmrk_resource_id.into();695696			let budget = budget::Value::new(NESTING_BUDGET);697698			let nft_owner =699				<PalletStructure<T>>::find_topmost_owner(collection_id, nft_id, &budget)700					.map_err(|_| <Error<T>>::ResourceDoesntExist)?;701702			let resource_collection_id: Option<CollectionId> =703				Self::get_nft_property_decoded(collection_id, nft_id, ResourceCollection)704					.map_err(|_| <Error<T>>::ResourceDoesntExist)?;705706			let resource_collection_id =707				resource_collection_id.ok_or(<Error<T>>::ResourceDoesntExist)?;708709			let is_pending: bool = Self::get_nft_property_decoded(710				resource_collection_id,711				resource_id,712				PendingResourceAccept,713			)714			.map_err(|_| <Error<T>>::ResourceDoesntExist)?;715716			ensure!(is_pending, <Error<T>>::ResourceNotPending);717718			ensure!(cross_sender == nft_owner, <Error<T>>::NoPermission);719720			<PalletNft<T>>::set_scoped_token_property(721				resource_collection_id,722				rmrk_resource_id.into(),723				PropertyScope::Rmrk,724				Self::rmrk_property(PendingResourceAccept, &false)?,725			)?;726727			Self::deposit_event(Event::<T>::ResourceAccepted {728				nft_id: rmrk_nft_id,729				resource_id: rmrk_resource_id,730			});731732			Ok(())733		}734735		/// accept the removal of a resource of an existing NFT736		#[transactional]737		#[pallet::weight(<SelfWeightOf<T>>::accept_resource_removal())]738		pub fn accept_resource_removal(739			origin: OriginFor<T>,740			rmrk_collection_id: RmrkCollectionId,741			rmrk_nft_id: RmrkNftId,742			rmrk_resource_id: RmrkResourceId,743		) -> DispatchResult {744			let sender = ensure_signed(origin)?;745			let cross_sender = T::CrossAccountId::from_sub(sender);746747			let collection_id = Self::unique_collection_id(rmrk_collection_id)748				.map_err(|_| <Error<T>>::ResourceDoesntExist)?;749			let collection =750				Self::get_typed_nft_collection(collection_id, misc::CollectionType::Regular)?;751			collection.check_is_external()?;752753			let nft_id = rmrk_nft_id.into();754			let resource_id = rmrk_resource_id.into();755756			let budget = budget::Value::new(NESTING_BUDGET);757758			let nft_owner =759				<PalletStructure<T>>::find_topmost_owner(collection_id, nft_id, &budget)760					.map_err(|_| <Error<T>>::ResourceDoesntExist)?;761762			ensure!(cross_sender == nft_owner, <Error<T>>::NoPermission);763764			let resource_collection_id: Option<CollectionId> =765				Self::get_nft_property_decoded(collection_id, nft_id, ResourceCollection)766					.map_err(|_| <Error<T>>::ResourceDoesntExist)?;767768			let resource_collection_id =769				resource_collection_id.ok_or(<Error<T>>::ResourceDoesntExist)?;770771			let is_pending: bool = Self::get_nft_property_decoded(772				resource_collection_id,773				resource_id,774				PendingResourceRemoval,775			)776			.map_err(|_| <Error<T>>::ResourceDoesntExist)?;777778			ensure!(is_pending, <Error<T>>::ResourceNotPending);779780			let resource_collection = Self::get_typed_nft_collection(781				resource_collection_id,782				misc::CollectionType::Resource,783			)?;784785			let resource_data = <TokenData<T>>::get((resource_collection_id, resource_id))786				.ok_or(<Error<T>>::ResourceDoesntExist)?;787788			let resource_owner = resource_data.owner;789790			<PalletNft<T>>::burn(791				&resource_collection,792				&resource_owner,793				rmrk_resource_id.into(),794			)795			.map_err(Self::map_unique_err_to_proxy)?;796797			Self::deposit_event(Event::<T>::ResourceRemovalAccepted {798				nft_id: rmrk_nft_id,799				resource_id: rmrk_resource_id,800			});801802			Ok(())803		}804805		/// set a custom value on an NFT806		#[transactional]807		#[pallet::weight(<SelfWeightOf<T>>::set_property())]808		pub fn set_property(809			origin: OriginFor<T>,810			#[pallet::compact] rmrk_collection_id: RmrkCollectionId,811			maybe_nft_id: Option<RmrkNftId>,812			key: RmrkKeyString,813			value: RmrkValueString,814		) -> DispatchResult {815			let sender = ensure_signed(origin)?;816			let sender = T::CrossAccountId::from_sub(sender);817818			let collection_id = Self::unique_collection_id(rmrk_collection_id)?;819			let collection =820				Self::get_typed_nft_collection(collection_id, misc::CollectionType::Regular)?;821			collection.check_is_external()?;822823			let budget = budget::Value::new(NESTING_BUDGET);824825			match maybe_nft_id {826				Some(nft_id) => {827					let token_id: TokenId = nft_id.into();828829					Self::ensure_nft_type(collection_id, token_id, NftType::Regular)?;830					Self::ensure_nft_owner(collection_id, token_id, &sender, &budget)?;831832					<PalletNft<T>>::set_scoped_token_property(833						collection_id,834						token_id,835						PropertyScope::Rmrk,836						Self::rmrk_property(UserProperty(key.as_slice()), &value)?,837					)?;838				}839				None => {840					let collection = Self::get_typed_nft_collection(841						collection_id,842						misc::CollectionType::Regular,843					)?;844845					Self::check_collection_owner(&collection, &sender)?;846847					<PalletCommon<T>>::set_scoped_collection_property(848						collection_id,849						PropertyScope::Rmrk,850						Self::rmrk_property(UserProperty(key.as_slice()), &value)?,851					)?;852				}853			}854855			Self::deposit_event(Event::PropertySet {856				collection_id: rmrk_collection_id,857				maybe_nft_id,858				key,859				value,860			});861862			Ok(())863		}864865		/// set a different order of resource priority866		#[transactional]867		#[pallet::weight(<SelfWeightOf<T>>::set_priority())]868		pub fn set_priority(869			origin: OriginFor<T>,870			rmrk_collection_id: RmrkCollectionId,871			rmrk_nft_id: RmrkNftId,872			priorities: BoundedVec<RmrkResourceId, RmrkMaxPriorities>,873		) -> DispatchResult {874			let sender = ensure_signed(origin)?;875			let sender = T::CrossAccountId::from_sub(sender);876877			let collection_id = Self::unique_collection_id(rmrk_collection_id)?;878			let nft_id = rmrk_nft_id.into();879880			let collection =881				Self::get_typed_nft_collection(collection_id, misc::CollectionType::Regular)?;882			collection.check_is_external()?;883884			let budget = budget::Value::new(NESTING_BUDGET);885886			Self::ensure_nft_type(collection_id, nft_id, NftType::Regular)?;887			Self::ensure_nft_owner(collection_id, nft_id, &sender, &budget)?;888889			<PalletNft<T>>::set_scoped_token_property(890				collection_id,891				nft_id,892				PropertyScope::Rmrk,893				Self::rmrk_property(ResourcePriorities, &priorities.into_inner())?,894			)?;895896			Self::deposit_event(Event::<T>::PrioritySet {897				collection_id: rmrk_collection_id,898				nft_id: rmrk_nft_id,899			});900901			Ok(())902		}903904		/// Create basic resource905		#[transactional]906		#[pallet::weight(<SelfWeightOf<T>>::add_basic_resource())]907		pub fn add_basic_resource(908			origin: OriginFor<T>,909			rmrk_collection_id: RmrkCollectionId,910			nft_id: RmrkNftId,911			resource: RmrkBasicResource,912		) -> DispatchResult {913			let sender = ensure_signed(origin.clone())?;914915			let collection_id = Self::unique_collection_id(rmrk_collection_id)?;916			let collection =917				Self::get_typed_nft_collection(collection_id, misc::CollectionType::Regular)?;918			collection.check_is_external()?;919920			let resource_id = Self::resource_add(921				sender,922				collection_id,923				nft_id.into(),924				[925					Self::rmrk_property(TokenType, &NftType::Resource)?,926					Self::rmrk_property(ResourceType, &misc::ResourceType::Basic)?,927					Self::rmrk_property(Src, &resource.src)?,928					Self::rmrk_property(Metadata, &resource.metadata)?,929					Self::rmrk_property(License, &resource.license)?,930					Self::rmrk_property(Thumb, &resource.thumb)?,931				]932				.into_iter(),933			)?;934935			Self::deposit_event(Event::ResourceAdded {936				nft_id,937				resource_id,938			});939			Ok(())940		}941942		/// Create composable resource943		#[transactional]944		#[pallet::weight(<SelfWeightOf<T>>::add_composable_resource())]945		pub fn add_composable_resource(946			origin: OriginFor<T>,947			rmrk_collection_id: RmrkCollectionId,948			nft_id: RmrkNftId,949			resource: RmrkComposableResource,950		) -> DispatchResult {951			let sender = ensure_signed(origin.clone())?;952953			let collection_id = Self::unique_collection_id(rmrk_collection_id)?;954			let collection =955				Self::get_typed_nft_collection(collection_id, misc::CollectionType::Regular)?;956			collection.check_is_external()?;957958			let resource_id = Self::resource_add(959				sender,960				collection_id,961				nft_id.into(),962				[963					Self::rmrk_property(TokenType, &NftType::Resource)?,964					Self::rmrk_property(ResourceType, &misc::ResourceType::Composable)?,965					Self::rmrk_property(Parts, &resource.parts)?,966					Self::rmrk_property(Base, &resource.base)?,967					Self::rmrk_property(Src, &resource.src)?,968					Self::rmrk_property(Metadata, &resource.metadata)?,969					Self::rmrk_property(License, &resource.license)?,970					Self::rmrk_property(Thumb, &resource.thumb)?,971				]972				.into_iter(),973			)?;974975			Self::deposit_event(Event::ResourceAdded {976				nft_id,977				resource_id,978			});979			Ok(())980		}981982		/// Create slot resource983		#[transactional]984		#[pallet::weight(<SelfWeightOf<T>>::add_slot_resource())]985		pub fn add_slot_resource(986			origin: OriginFor<T>,987			rmrk_collection_id: RmrkCollectionId,988			nft_id: RmrkNftId,989			resource: RmrkSlotResource,990		) -> DispatchResult {991			let sender = ensure_signed(origin.clone())?;992993			let collection_id = Self::unique_collection_id(rmrk_collection_id)?;994			let collection =995				Self::get_typed_nft_collection(collection_id, misc::CollectionType::Regular)?;996			collection.check_is_external()?;997998			let resource_id = Self::resource_add(999				sender,1000				collection_id,1001				nft_id.into(),1002				[1003					Self::rmrk_property(TokenType, &NftType::Resource)?,1004					Self::rmrk_property(ResourceType, &misc::ResourceType::Slot)?,1005					Self::rmrk_property(Base, &resource.base)?,1006					Self::rmrk_property(Src, &resource.src)?,1007					Self::rmrk_property(Metadata, &resource.metadata)?,1008					Self::rmrk_property(Slot, &resource.slot)?,1009					Self::rmrk_property(License, &resource.license)?,1010					Self::rmrk_property(Thumb, &resource.thumb)?,1011				]1012				.into_iter(),1013			)?;10141015			Self::deposit_event(Event::ResourceAdded {1016				nft_id,1017				resource_id,1018			});1019			Ok(())1020		}10211022		/// remove resource1023		#[transactional]1024		#[pallet::weight(<SelfWeightOf<T>>::remove_resource())]1025		pub fn remove_resource(1026			origin: OriginFor<T>,1027			rmrk_collection_id: RmrkCollectionId,1028			nft_id: RmrkNftId,1029			resource_id: RmrkResourceId,1030		) -> DispatchResult {1031			let sender = ensure_signed(origin.clone())?;10321033			let collection_id = Self::unique_collection_id(rmrk_collection_id)?;1034			let collection =1035				Self::get_typed_nft_collection(collection_id, misc::CollectionType::Regular)?;1036			collection.check_is_external()?;10371038			Self::resource_remove(sender, collection_id, nft_id.into(), resource_id.into())?;10391040			Self::deposit_event(Event::ResourceRemoval {1041				nft_id,1042				resource_id,1043			});1044			Ok(())1045		}1046	}1047}10481049impl<T: Config> Pallet<T> {1050	pub fn rmrk_property_key(rmrk_key: RmrkProperty) -> Result<PropertyKey, DispatchError> {1051		let key = rmrk_key.to_key::<T>()?;10521053		let scoped_key = PropertyScope::Rmrk1054			.apply(key)1055			.map_err(|_| <Error<T>>::RmrkPropertyKeyIsTooLong)?;10561057		Ok(scoped_key)1058	}10591060	// todo think about renaming these1061	pub fn rmrk_property<E: Encode>(1062		rmrk_key: RmrkProperty,1063		value: &E,1064	) -> Result<Property, DispatchError> {1065		let key = rmrk_key.to_key::<T>()?;10661067		let value = value1068			.encode()1069			.try_into()1070			.map_err(|_| <Error<T>>::RmrkPropertyValueIsTooLong)?;10711072		let property = Property { key, value };10731074		Ok(property)1075	}10761077	pub fn decode_property<D: Decode>(vec: PropertyValue) -> Result<D, DispatchError> {1078		vec.decode()1079			.map_err(|_| <Error<T>>::UnableToDecodeRmrkData.into())1080	}10811082	pub fn rebind<L, S>(vec: &BoundedVec<u8, L>) -> Result<BoundedVec<u8, S>, DispatchError>1083	where1084		BoundedVec<u8, S>: TryFrom<Vec<u8>>,1085	{1086		vec.rebind()1087			.map_err(|_| <Error<T>>::RmrkPropertyValueIsTooLong.into())1088	}10891090	fn init_collection(1091		sender: T::CrossAccountId,1092		data: CreateCollectionData<T::AccountId>,1093		properties: impl Iterator<Item = Property>,1094	) -> Result<CollectionId, DispatchError> {1095		let collection_id = <PalletNft<T>>::init_collection(sender, data, true);10961097		if let Err(DispatchError::Arithmetic(_)) = &collection_id {1098			return Err(<Error<T>>::NoAvailableCollectionId.into());1099		}11001101		<PalletCommon<T>>::set_scoped_collection_properties(1102			collection_id?,1103			PropertyScope::Rmrk,1104			properties,1105		)?;11061107		collection_id1108	}11091110	pub fn create_nft(1111		sender: &T::CrossAccountId,1112		owner: &T::CrossAccountId,1113		collection: &NonfungibleHandle<T>,1114		properties: impl Iterator<Item = Property>,1115	) -> Result<TokenId, DispatchError> {1116		let data = CreateNftExData {1117			properties: BoundedVec::default(),1118			owner: owner.clone(),1119		};11201121		let budget = budget::Value::new(NESTING_BUDGET);11221123		<PalletNft<T>>::create_item(collection, sender, data, &budget)?;11241125		let nft_id = <PalletNft<T>>::current_token_id(collection.id);11261127		<PalletNft<T>>::set_scoped_token_properties(1128			collection.id,1129			nft_id,1130			PropertyScope::Rmrk,1131			properties,1132		)?;11331134		Ok(nft_id)1135	}11361137	fn destroy_nft(1138		sender: T::CrossAccountId,1139		collection_id: CollectionId,1140		token_id: TokenId,1141		max_burns: u32,1142		error_if_not_owned: Error<T>,1143	) -> DispatchResultWithPostInfo {1144		let collection =1145			Self::get_typed_nft_collection(collection_id, misc::CollectionType::Regular)?;11461147		let token_data =1148			<TokenData<T>>::get((collection_id, token_id)).ok_or(<Error<T>>::NoAvailableNftId)?;11491150		let from = token_data.owner;11511152		let owner_check_budget = budget::Value::new(NESTING_BUDGET);11531154		ensure!(1155			<PalletStructure<T>>::check_indirectly_owned(1156				sender.clone(),1157				collection_id,1158				token_id,1159				None,1160				&owner_check_budget1161			)?,1162			error_if_not_owned,1163		);11641165		let burns_budget = budget::Value::new(max_burns);1166		let breadth_budget = budget::Value::new(max_burns);11671168		<PalletNft<T>>::burn_recursively(1169			&collection,1170			&from,1171			token_id,1172			&burns_budget,1173			&breadth_budget,1174		)1175	}11761177	fn resource_add(1178		sender: T::AccountId,1179		collection_id: CollectionId,1180		token_id: TokenId,1181		resource_properties: impl Iterator<Item = Property>,1182	) -> Result<RmrkResourceId, DispatchError> {1183		let collection =1184			Self::get_typed_nft_collection(collection_id, misc::CollectionType::Regular)?;1185		ensure!(collection.owner == sender, Error::<T>::NoPermission);11861187		let sender = T::CrossAccountId::from_sub(sender);1188		let budget = budget::Value::new(NESTING_BUDGET);11891190		let nft_owner = <PalletStructure<T>>::find_topmost_owner(collection_id, token_id, &budget)1191			.map_err(Self::map_unique_err_to_proxy)?;11921193		let pending = sender != nft_owner;11941195		let resource_collection_id: Option<CollectionId> =1196			Self::get_nft_property_decoded(collection_id, token_id, ResourceCollection)?;11971198		let resource_collection_id = match resource_collection_id {1199			Some(id) => id,1200			None => {1201				let resource_collection_id = Self::init_collection(1202					sender.clone(),1203					CreateCollectionData {1204						..Default::default()1205					},1206					[Self::rmrk_property(1207						CollectionType,1208						&misc::CollectionType::Resource,1209					)?]1210					.into_iter(),1211				)?;12121213				<PalletNft<T>>::set_scoped_token_property(1214					collection_id,1215					token_id,1216					PropertyScope::Rmrk,1217					Self::rmrk_property(ResourceCollection, &Some(resource_collection_id))?,1218				)?;12191220				resource_collection_id1221			}1222		};12231224		let resource_collection =1225			Self::get_typed_nft_collection(resource_collection_id, misc::CollectionType::Resource)?;12261227		// todo probably add extra connections to bases, slots, etc., when RMRK starts to use them12281229		let resource_id = Self::create_nft(1230			&sender,1231			&nft_owner,1232			&resource_collection,1233			resource_properties.chain(1234				[1235					Self::rmrk_property(PendingResourceAccept, &pending)?,1236					Self::rmrk_property(PendingResourceRemoval, &false)?,1237				]1238				.into_iter(),1239			),1240		)1241		.map_err(|err| match err {1242			DispatchError::Arithmetic(_) => <Error<T>>::NoAvailableNftId.into(),1243			err => Self::map_unique_err_to_proxy(err),1244		})?;12451246		Ok(resource_id.0)1247	}12481249	fn resource_remove(1250		sender: T::AccountId,1251		collection_id: CollectionId,1252		nft_id: TokenId,1253		resource_id: TokenId,1254	) -> DispatchResult {1255		let collection =1256			Self::get_typed_nft_collection(collection_id, misc::CollectionType::Regular)?;1257		ensure!(collection.owner == sender, Error::<T>::NoPermission);12581259		let resource_collection_id: Option<CollectionId> =1260			Self::get_nft_property_decoded(collection_id, nft_id, ResourceCollection)?;12611262		let resource_collection_id =1263			resource_collection_id.ok_or(Error::<T>::ResourceDoesntExist)?;12641265		let resource_collection =1266			Self::get_typed_nft_collection(resource_collection_id, misc::CollectionType::Resource)?;1267		ensure!(1268			<PalletNft<T>>::token_exists(&resource_collection, resource_id),1269			Error::<T>::ResourceDoesntExist1270		);12711272		let budget = up_data_structs::budget::Value::new(NESTING_BUDGET);1273		let topmost_owner =1274			<PalletStructure<T>>::find_topmost_owner(collection_id, nft_id, &budget)?;12751276		let sender = T::CrossAccountId::from_sub(sender);1277		if topmost_owner == sender {1278			<PalletNft<T>>::burn(&resource_collection, &sender, resource_id)1279				.map_err(Self::map_unique_err_to_proxy)?;1280		} else {1281			<PalletNft<T>>::set_scoped_token_property(1282				resource_collection_id,1283				resource_id,1284				PropertyScope::Rmrk,1285				Self::rmrk_property(PendingResourceRemoval, &true)?,1286			)?;1287		}12881289		Ok(())1290	}12911292	fn change_collection_owner(1293		collection_id: CollectionId,1294		collection_type: misc::CollectionType,1295		sender: T::AccountId,1296		new_owner: T::AccountId,1297	) -> DispatchResult {1298		let collection = Self::get_typed_nft_collection(collection_id, collection_type)?;1299		Self::check_collection_owner(&collection, &T::CrossAccountId::from_sub(sender))?;13001301		let mut collection = collection.into_inner();13021303		collection.owner = new_owner;1304		collection.save()1305	}13061307	fn check_collection_owner(1308		collection: &NonfungibleHandle<T>,1309		account: &T::CrossAccountId,1310	) -> DispatchResult {1311		collection1312			.check_is_owner(account)1313			.map_err(Self::map_unique_err_to_proxy)1314	}13151316	pub fn last_collection_idx() -> RmrkCollectionId {1317		<CollectionIndex<T>>::get()1318	}13191320	pub fn unique_collection_id(1321		rmrk_collection_id: RmrkCollectionId,1322	) -> Result<CollectionId, DispatchError> {1323		<UniqueCollectionId<T>>::try_get(rmrk_collection_id)1324			.map_err(|_| <Error<T>>::CollectionUnknown.into())1325	}13261327	pub fn rmrk_collection_id(1328		unique_collection_id: CollectionId,1329	) -> Result<RmrkCollectionId, DispatchError> {1330		Self::get_collection_property_decoded(unique_collection_id, RmrkInternalCollectionId)1331	}13321333	pub fn get_nft_collection(1334		collection_id: CollectionId,1335	) -> Result<NonfungibleHandle<T>, DispatchError> {1336		let collection = <CollectionHandle<T>>::try_get(collection_id)1337			.map_err(|_| <Error<T>>::CollectionUnknown)?;13381339		match collection.mode {1340			CollectionMode::NFT => Ok(NonfungibleHandle::cast(collection)),1341			_ => Err(<Error<T>>::CollectionUnknown.into()),1342		}1343	}13441345	pub fn collection_exists(collection_id: CollectionId) -> bool {1346		<CollectionHandle<T>>::try_get(collection_id).is_ok()1347	}13481349	pub fn get_collection_property(1350		collection_id: CollectionId,1351		key: RmrkProperty,1352	) -> Result<PropertyValue, DispatchError> {1353		let collection_property = <PalletCommon<T>>::collection_properties(collection_id)1354			.get(&Self::rmrk_property_key(key)?)1355			.ok_or(<Error<T>>::CollectionUnknown)?1356			.clone();13571358		Ok(collection_property)1359	}13601361	pub fn get_collection_property_decoded<V: Decode>(1362		collection_id: CollectionId,1363		key: RmrkProperty,1364	) -> Result<V, DispatchError> {1365		Self::decode_property(Self::get_collection_property(collection_id, key)?)1366	}13671368	pub fn get_collection_type(1369		collection_id: CollectionId,1370	) -> Result<misc::CollectionType, DispatchError> {1371		Self::get_collection_property_decoded(collection_id, CollectionType)1372			.map_err(|_| <Error<T>>::CorruptedCollectionType.into())1373	}13741375	pub fn ensure_collection_type(1376		collection_id: CollectionId,1377		collection_type: misc::CollectionType,1378	) -> DispatchResult {1379		let actual_type = Self::get_collection_type(collection_id)?;1380		ensure!(1381			actual_type == collection_type,1382			<CommonError<T>>::NoPermission1383		);13841385		Ok(())1386	}13871388	pub fn get_typed_nft_collection(1389		collection_id: CollectionId,1390		collection_type: misc::CollectionType,1391	) -> Result<NonfungibleHandle<T>, DispatchError> {1392		Self::ensure_collection_type(collection_id, collection_type)?;13931394		Self::get_nft_collection(collection_id)1395	}13961397	pub fn get_typed_nft_collection_mapped(1398		rmrk_collection_id: RmrkCollectionId,1399		collection_type: misc::CollectionType,1400	) -> Result<(NonfungibleHandle<T>, CollectionId), DispatchError> {1401		let unique_collection_id = match collection_type {1402			misc::CollectionType::Regular => Self::unique_collection_id(rmrk_collection_id)?,1403			_ => rmrk_collection_id.into(),1404		};14051406		let collection = Self::get_typed_nft_collection(unique_collection_id, collection_type)?;14071408		Ok((collection, unique_collection_id))1409	}14101411	pub fn get_nft_property(1412		collection_id: CollectionId,1413		nft_id: TokenId,1414		key: RmrkProperty,1415	) -> Result<PropertyValue, DispatchError> {1416		let nft_property = <PalletNft<T>>::token_properties((collection_id, nft_id))1417			.get(&Self::rmrk_property_key(key)?)1418			.ok_or(<Error<T>>::NoAvailableNftId)? // todo replace with better error?1419			.clone();14201421		Ok(nft_property)1422	}14231424	pub fn get_nft_property_decoded<V: Decode>(1425		collection_id: CollectionId,1426		nft_id: TokenId,1427		key: RmrkProperty,1428	) -> Result<V, DispatchError> {1429		Self::decode_property(Self::get_nft_property(collection_id, nft_id, key)?)1430	}14311432	pub fn nft_exists(collection_id: CollectionId, nft_id: TokenId) -> bool {1433		<TokenData<T>>::contains_key((collection_id, nft_id))1434	}14351436	pub fn get_nft_type(1437		collection_id: CollectionId,1438		token_id: TokenId,1439	) -> Result<NftType, DispatchError> {1440		Self::get_nft_property_decoded(collection_id, token_id, TokenType)1441			.map_err(|_| <Error<T>>::NoAvailableNftId.into())1442	}14431444	pub fn ensure_nft_type(1445		collection_id: CollectionId,1446		token_id: TokenId,1447		nft_type: NftType,1448	) -> DispatchResult {1449		let actual_type = Self::get_nft_type(collection_id, token_id)?;1450		ensure!(actual_type == nft_type, <Error<T>>::NoPermission);14511452		Ok(())1453	}14541455	pub fn ensure_nft_owner(1456		collection_id: CollectionId,1457		token_id: TokenId,1458		possible_owner: &T::CrossAccountId,1459		nesting_budget: &dyn budget::Budget,1460	) -> DispatchResult {1461		let is_owned = <PalletStructure<T>>::check_indirectly_owned(1462			possible_owner.clone(),1463			collection_id,1464			token_id,1465			None,1466			nesting_budget,1467		)1468		.map_err(Self::map_unique_err_to_proxy)?;14691470		ensure!(is_owned, <Error<T>>::NoPermission);14711472		Ok(())1473	}14741475	pub fn filter_user_properties<Key, Value, R, Mapper>(1476		collection_id: CollectionId,1477		token_id: Option<TokenId>,1478		filter_keys: Option<Vec<RmrkPropertyKey>>,1479		mapper: Mapper,1480	) -> Result<Vec<R>, DispatchError>1481	where1482		Key: TryFrom<RmrkPropertyKey> + AsRef<[u8]>,1483		Value: Decode + Default,1484		Mapper: Fn(Key, Value) -> R,1485	{1486		filter_keys1487			.map(|keys| {1488				let properties = keys1489					.into_iter()1490					.filter_map(|key| {1491						let key: Key = key.try_into().ok()?;14921493						let value = match token_id {1494							Some(token_id) => Self::get_nft_property_decoded(1495								collection_id,1496								token_id,1497								UserProperty(key.as_ref()),1498							),1499							None => Self::get_collection_property_decoded(1500								collection_id,1501								UserProperty(key.as_ref()),1502							),1503						}1504						.ok()?;15051506						Some(mapper(key, value))1507					})1508					.collect();15091510				Ok(properties)1511			})1512			.unwrap_or_else(|| {1513				let properties =1514					Self::iterate_user_properties(collection_id, token_id, mapper)?.collect();15151516				Ok(properties)1517			})1518	}15191520	pub fn iterate_user_properties<Key, Value, R, Mapper>(1521		collection_id: CollectionId,1522		token_id: Option<TokenId>,1523		mapper: Mapper,1524	) -> Result<impl Iterator<Item = R>, DispatchError>1525	where1526		Key: TryFrom<RmrkPropertyKey> + AsRef<[u8]>,1527		Value: Decode + Default,1528		Mapper: Fn(Key, Value) -> R,1529	{1530		let key_prefix = Self::rmrk_property_key(UserProperty(b""))?;15311532		let properties = match token_id {1533			Some(token_id) => <PalletNft<T>>::token_properties((collection_id, token_id)),1534			None => <PalletCommon<T>>::collection_properties(collection_id),1535		};15361537		let properties = properties.into_iter().filter_map(move |(key, value)| {1538			let key = key.as_slice().strip_prefix(key_prefix.as_slice())?;15391540			let key: Key = key.to_vec().try_into().ok()?;1541			let value: Value = value.decode().ok()?;15421543			Some(mapper(key, value))1544		});15451546		Ok(properties)1547	}15481549	fn map_unique_err_to_proxy(err: DispatchError) -> DispatchError {1550		map_unique_err_to_proxy! {1551			match err {1552				CommonError::NoPermission => NoPermission,1553				CommonError::CollectionTokenLimitExceeded => CollectionFullOrLocked,1554				CommonError::PublicMintingNotAllowed => NoPermission,1555				CommonError::TokenNotFound => NoAvailableNftId,1556				CommonError::ApprovedValueTooLow => NoPermission,1557				CommonError::CantDestroyNotEmptyCollection => CollectionNotEmpty,1558				StructureError::TokenNotFound => NoAvailableNftId,1559				StructureError::OuroborosDetected => CannotSendToDescendentOrSelf,1560			}1561		}1562	}1563}