git.delta.rocks / unique-network / refs/commits / c3cc2bb5c4b4

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#![recursion_limit = "1024"]18#![cfg_attr(not(feature = "std"), no_std)]19#![allow(20	clippy::too_many_arguments,21	clippy::unnecessary_mut_passed,22	clippy::unused_unit23)]2425extern crate alloc;2627use frame_support::{28	decl_module, decl_storage, decl_error, decl_event,29	dispatch::DispatchResult,30	ensure,31	weights::{Weight},32	transactional,33	pallet_prelude::{DispatchResultWithPostInfo, ConstU32},34	BoundedVec,35};36use scale_info::TypeInfo;37use frame_system::{self as system, ensure_signed};38use sp_runtime::{sp_std::prelude::Vec};39use up_data_structs::{40	MAX_COLLECTION_NAME_LENGTH,41	MAX_COLLECTION_DESCRIPTION_LENGTH, MAX_TOKEN_PREFIX_LENGTH, AccessMode, CreateItemData,42	CollectionLimits, CollectionPermissions, CollectionId, CollectionMode, TokenId, SponsorshipState,43	CreateCollectionData, CreateItemExData, budget, Property, PropertyKey,44	PropertyKeyPermission,45};46use pallet_evm::account::CrossAccountId;47use pallet_common::{48	CollectionHandle, Pallet as PalletCommon, CommonWeightInfo, dispatch::dispatch_call,49	dispatch::CollectionDispatch,50};51pub mod eth;5253#[cfg(feature = "runtime-benchmarks")]54mod benchmarking;55pub mod weights;56use weights::WeightInfo;5758decl_error! {59	/// Error for non-fungible-token module.60	pub enum Error for Module<T: Config> {61		/// Decimal_points parameter must be lower than MAX_DECIMAL_POINTS constant, currently it is 30.62		CollectionDecimalPointLimitExceeded,63		/// This address is not set as sponsor, use setCollectionSponsor first.64		ConfirmUnsetSponsorFail,65		/// Length of items properties must be greater than 0.66		EmptyArgument,67	}68}6970pub trait Config: system::Config + pallet_common::Config + Sized + TypeInfo {71	type Event: From<Event<Self>> + Into<<Self as frame_system::Config>::Event>;7273	/// Weight information for extrinsics in this pallet.74	type WeightInfo: WeightInfo;75	type CommonWeightInfo: CommonWeightInfo<Self::CrossAccountId>;76}7778decl_event! {79	pub enum Event<T>80	where81		<T as frame_system::Config>::AccountId,82		<T as pallet_evm::account::Config>::CrossAccountId,83	{84		/// Collection sponsor was removed85		///86		/// # Arguments87		///88		/// * collection_id: Globally unique collection identifier.89		CollectionSponsorRemoved(CollectionId),9091		/// Collection admin was added92		///93		/// # Arguments94		///95		/// * collection_id: Globally unique collection identifier.96		///97		/// * admin:  Admin address.98		CollectionAdminAdded(CollectionId, CrossAccountId),99100		/// Collection owned was change101		///102		/// # Arguments103		///104		/// * collection_id: Globally unique collection identifier.105		///106		/// * owner:  New owner address.107		CollectionOwnedChanged(CollectionId, AccountId),108109		/// Collection sponsor was set110		///111		/// # Arguments112		///113		/// * collection_id: Globally unique collection identifier.114		///115		/// * owner:  New sponsor address.116		CollectionSponsorSet(CollectionId, AccountId),117118		/// const on chain schema was set119		///120		/// # Arguments121		///122		/// * collection_id: Globally unique collection identifier.123		ConstOnChainSchemaSet(CollectionId),124125		/// New sponsor was confirm126		///127		/// # Arguments128		///129		/// * collection_id: Globally unique collection identifier.130		///131		/// * sponsor:  New sponsor address.132		SponsorshipConfirmed(CollectionId, AccountId),133134		/// Collection admin was removed135		///136		/// # Arguments137		///138		/// * collection_id: Globally unique collection identifier.139		///140		/// * admin:  Admin address.141		CollectionAdminRemoved(CollectionId, CrossAccountId),142143		/// Address was remove from allow list144		///145		/// # Arguments146		///147		/// * collection_id: Globally unique collection identifier.148		///149		/// * user:  Address.150		AllowListAddressRemoved(CollectionId, CrossAccountId),151152		/// Address was add to allow list153		///154		/// # Arguments155		///156		/// * collection_id: Globally unique collection identifier.157		///158		/// * user:  Address.159		AllowListAddressAdded(CollectionId, CrossAccountId),160161		/// Collection limits was set162		///163		/// # Arguments164		///165		/// * collection_id: Globally unique collection identifier.166		CollectionLimitSet(CollectionId),167168		CollectionPermissionSet(CollectionId),169170		/// Mint permission	was set171		///172		/// # Arguments173		///174		/// * collection_id: Globally unique collection identifier.175		MintPermissionSet(CollectionId),176177		/// Offchain schema was set178		///179		/// # Arguments180		///181		/// * collection_id: Globally unique collection identifier.182		OffchainSchemaSet(CollectionId),183184		/// Public access mode was set185		///186		/// # Arguments187		///188		/// * collection_id: Globally unique collection identifier.189		///190		/// * mode: New access state.191		PublicAccessModeSet(CollectionId, AccessMode),192193		/// Schema version was set194		///195		/// # Arguments196		///197		/// * collection_id: Globally unique collection identifier.198		SchemaVersionSet(CollectionId),199	}200}201202type SelfWeightOf<T> = <T as Config>::WeightInfo;203204// # Used definitions205//206// ## User control levels207//208// chain-controlled - key is uncontrolled by user209//                    i.e autoincrementing index210//                    can use non-cryptographic hash211// real - key is controlled by user212//        but it is hard to generate enough colliding values, i.e owner of signed txs213//        can use non-cryptographic hash214// controlled - key is completly controlled by users215//              i.e maps with mutable keys216//              should use cryptographic hash217//218// ## User control level downgrade reasons219//220// ?1 - chain-controlled -> controlled221//      collections/tokens can be destroyed, resulting in massive holes222// ?2 - chain-controlled -> controlled223//      same as ?1, but can be only added, resulting in easier exploitation224// ?3 - real -> controlled225//      no confirmation required, so addresses can be easily generated226decl_storage! {227	trait Store for Module<T: Config> as Unique {228229		//#region Private members230		/// Used for migrations231		ChainVersion: u64;232		//#endregion233234		//#region Tokens transfer rate limit baskets235		/// (Collection id (controlled?2), who created (real))236		/// TODO: Off chain worker should remove from this map when collection gets removed237		pub CreateItemBasket get(fn create_item_basket): map hasher(blake2_128_concat) (CollectionId, T::AccountId) => Option<T::BlockNumber>;238		/// Collection id (controlled?2), token id (controlled?2)239		pub NftTransferBasket get(fn nft_transfer_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => Option<T::BlockNumber>;240		/// Collection id (controlled?2), owning user (real)241		pub FungibleTransferBasket get(fn fungible_transfer_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(twox_64_concat) T::AccountId => Option<T::BlockNumber>;242		/// Collection id (controlled?2), token id (controlled?2)243		pub ReFungibleTransferBasket get(fn refungible_transfer_basket): nmap hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId, hasher(twox_64_concat) T::AccountId => Option<T::BlockNumber>;244		//#endregion245246		/// Variable metadata sponsoring247		/// Collection id (controlled?2), token id (controlled?2)248		#[deprecated]249		pub VariableMetaDataBasket get(fn variable_meta_data_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => Option<T::BlockNumber>;250		pub TokenPropertyBasket get(fn token_property_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => Option<T::BlockNumber>;251252		/// Approval sponsoring253		pub NftApproveBasket get(fn nft_approve_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => Option<T::BlockNumber>;254		pub FungibleApproveBasket get(fn fungible_approve_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(twox_64_concat) T::AccountId => Option<T::BlockNumber>;255		pub RefungibleApproveBasket get(fn refungible_approve_basket): nmap hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId, hasher(twox_64_concat) T::AccountId => Option<T::BlockNumber>;256	}257}258259decl_module! {260	pub struct Module<T: Config> for enum Call261	where262		origin: T::Origin263	{264		type Error = Error<T>;265266		fn deposit_event() = default;267268		fn on_initialize(_now: T::BlockNumber) -> Weight {269			0270		}271272		fn on_runtime_upgrade() -> Weight {273			let limit = None;274275			<VariableMetaDataBasket<T>>::remove_all(limit);276277			0278		}279280		/// This method creates a Collection of NFTs. Each Token may have multiple properties encoded as an array of bytes of certain length. The initial owner of the collection is set to the address that signed the transaction and can be changed later.281		///282		/// # Permissions283		///284		/// * Anyone.285		///286		/// # Arguments287		///288		/// * collection_name: UTF-16 string with collection name (limit 64 characters), will be stored as zero-terminated.289		///290		/// * collection_description: UTF-16 string with collection description (limit 256 characters), will be stored as zero-terminated.291		///292		/// * token_prefix: UTF-8 string with token prefix.293		///294		/// * mode: [CollectionMode] collection type and type dependent data.295		// returns collection ID296		#[weight = <SelfWeightOf<T>>::create_collection()]297		#[transactional]298		#[deprecated]299		pub fn create_collection(origin,300								 collection_name: BoundedVec<u16, ConstU32<MAX_COLLECTION_NAME_LENGTH>>,301								 collection_description: BoundedVec<u16, ConstU32<MAX_COLLECTION_DESCRIPTION_LENGTH>>,302								 token_prefix: BoundedVec<u8, ConstU32<MAX_TOKEN_PREFIX_LENGTH>>,303								 mode: CollectionMode) -> DispatchResult  {304			let data: CreateCollectionData<T::AccountId> = CreateCollectionData {305				name: collection_name,306				description: collection_description,307				token_prefix,308				mode,309				..Default::default()310			};311			Self::create_collection_ex(origin, data)312		}313314		/// This method creates a collection315		///316		/// Prefer it to deprecated [`created_collection`] method317		#[weight = <SelfWeightOf<T>>::create_collection()]318		#[transactional]319		pub fn create_collection_ex(origin, data: CreateCollectionData<T::AccountId>) -> DispatchResult {320			let sender = ensure_signed(origin)?;321322			// =========323324			T::CollectionDispatch::create(sender, data)?;325326			Ok(())327		}328329		/// **DANGEROUS**: Destroys collection and all NFTs within this collection. Users irrecoverably lose their assets and may lose real money.330		///331		/// # Permissions332		///333		/// * Collection Owner.334		///335		/// # Arguments336		///337		/// * collection_id: collection to destroy.338		#[weight = <SelfWeightOf<T>>::destroy_collection()]339		#[transactional]340		pub fn destroy_collection(origin, collection_id: CollectionId) -> DispatchResult {341			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);342			let collection = <CollectionHandle<T>>::try_get(collection_id)?;343344			// =========345346			T::CollectionDispatch::destroy(sender, collection)?;347348			<NftTransferBasket<T>>::remove_prefix(collection_id, None);349			<FungibleTransferBasket<T>>::remove_prefix(collection_id, None);350			<ReFungibleTransferBasket<T>>::remove_prefix((collection_id,), None);351352			<NftApproveBasket<T>>::remove_prefix(collection_id, None);353			<FungibleApproveBasket<T>>::remove_prefix(collection_id, None);354			<RefungibleApproveBasket<T>>::remove_prefix((collection_id,), None);355356			Ok(())357		}358359		/// Add an address to allow list.360		///361		/// # Permissions362		///363		/// * Collection Owner364		/// * Collection Admin365		///366		/// # Arguments367		///368		/// * collection_id.369		///370		/// * address.371		#[weight = <SelfWeightOf<T>>::add_to_allow_list()]372		#[transactional]373		pub fn add_to_allow_list(origin, collection_id: CollectionId, address: T::CrossAccountId) -> DispatchResult{374375			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);376			let collection = <CollectionHandle<T>>::try_get(collection_id)?;377378			<PalletCommon<T>>::toggle_allowlist(379				&collection,380				&sender,381				&address,382				true,383			)?;384385			Self::deposit_event(Event::<T>::AllowListAddressAdded(386				collection_id,387				address388			));389390			Ok(())391		}392393		/// Remove an address from allow list.394		///395		/// # Permissions396		///397		/// * Collection Owner398		/// * Collection Admin399		///400		/// # Arguments401		///402		/// * collection_id.403		///404		/// * address.405		#[weight = <SelfWeightOf<T>>::remove_from_allow_list()]406		#[transactional]407		pub fn remove_from_allow_list(origin, collection_id: CollectionId, address: T::CrossAccountId) -> DispatchResult{408409			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);410			let collection = <CollectionHandle<T>>::try_get(collection_id)?;411412			<PalletCommon<T>>::toggle_allowlist(413				&collection,414				&sender,415				&address,416				false,417			)?;418419			<Pallet<T>>::deposit_event(Event::<T>::AllowListAddressRemoved(420				collection_id,421				address422			));423424			Ok(())425		}426427		/// Change the owner of the collection.428		///429		/// # Permissions430		///431		/// * Collection Owner.432		///433		/// # Arguments434		///435		/// * collection_id.436		///437		/// * new_owner.438		#[weight = <SelfWeightOf<T>>::change_collection_owner()]439		#[transactional]440		pub fn change_collection_owner(origin, collection_id: CollectionId, new_owner: T::AccountId) -> DispatchResult {441442			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);443444			let mut target_collection = <CollectionHandle<T>>::try_get(collection_id)?;445			target_collection.check_is_owner(&sender)?;446447			target_collection.owner = new_owner.clone();448			<Pallet<T>>::deposit_event(Event::<T>::CollectionOwnedChanged(449				collection_id,450				new_owner451			));452453			target_collection.save()454		}455456		/// Adds an admin of the Collection.457		/// NFT Collection can be controlled by multiple admin addresses (some which can also be servers, for example). Admins can issue and burn NFTs, as well as add and remove other admins, but cannot change NFT or Collection ownership.458		///459		/// # Permissions460		///461		/// * Collection Owner.462		/// * Collection Admin.463		///464		/// # Arguments465		///466		/// * collection_id: ID of the Collection to add admin for.467		///468		/// * new_admin_id: Address of new admin to add.469		#[weight = <SelfWeightOf<T>>::add_collection_admin()]470		#[transactional]471		pub fn add_collection_admin(origin, collection_id: CollectionId, new_admin_id: T::CrossAccountId) -> DispatchResult {472			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);473			let collection = <CollectionHandle<T>>::try_get(collection_id)?;474475			<Pallet<T>>::deposit_event(Event::<T>::CollectionAdminAdded(476				collection_id,477				new_admin_id.clone()478			));479480			<PalletCommon<T>>::toggle_admin(&collection, &sender, &new_admin_id, true)481		}482483		/// Remove admin address of the Collection. An admin address can remove itself. List of admins may become empty, in which case only Collection Owner will be able to add an Admin.484		///485		/// # Permissions486		///487		/// * Collection Owner.488		/// * Collection Admin.489		///490		/// # Arguments491		///492		/// * collection_id: ID of the Collection to remove admin for.493		///494		/// * account_id: Address of admin to remove.495		#[weight = <SelfWeightOf<T>>::remove_collection_admin()]496		#[transactional]497		pub fn remove_collection_admin(origin, collection_id: CollectionId, account_id: T::CrossAccountId) -> DispatchResult {498			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);499			let collection = <CollectionHandle<T>>::try_get(collection_id)?;500501			<Pallet<T>>::deposit_event(Event::<T>::CollectionAdminRemoved(502				collection_id,503				account_id.clone()504			));505506			<PalletCommon<T>>::toggle_admin(&collection, &sender, &account_id, false)507		}508509		/// # Permissions510		///511		/// * Collection Owner512		///513		/// # Arguments514		///515		/// * collection_id.516		///517		/// * new_sponsor.518		#[weight = <SelfWeightOf<T>>::set_collection_sponsor()]519		#[transactional]520		pub fn set_collection_sponsor(origin, collection_id: CollectionId, new_sponsor: T::AccountId) -> DispatchResult {521			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);522523			let mut target_collection = <CollectionHandle<T>>::try_get(collection_id)?;524			target_collection.check_is_owner(&sender)?;525526			target_collection.set_sponsor(new_sponsor.clone());527528			<Pallet<T>>::deposit_event(Event::<T>::CollectionSponsorSet(529				collection_id,530				new_sponsor531			));532533			target_collection.save()534		}535536		/// # Permissions537		///538		/// * Sponsor.539		///540		/// # Arguments541		///542		/// * collection_id.543		#[weight = <SelfWeightOf<T>>::confirm_sponsorship()]544		#[transactional]545		pub fn confirm_sponsorship(origin, collection_id: CollectionId) -> DispatchResult {546			let sender = ensure_signed(origin)?;547548			let mut target_collection = <CollectionHandle<T>>::try_get(collection_id)?;549			ensure!(550				target_collection.confirm_sponsorship(&sender),551				Error::<T>::ConfirmUnsetSponsorFail552			);553554			<Pallet<T>>::deposit_event(Event::<T>::SponsorshipConfirmed(555				collection_id,556				sender557			));558559			target_collection.save()560		}561562		/// Switch back to pay-per-own-transaction model.563		///564		/// # Permissions565		///566		/// * Collection owner.567		///568		/// # Arguments569		///570		/// * collection_id.571		#[weight = <SelfWeightOf<T>>::remove_collection_sponsor()]572		#[transactional]573		pub fn remove_collection_sponsor(origin, collection_id: CollectionId) -> DispatchResult {574			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);575576			let mut target_collection = <CollectionHandle<T>>::try_get(collection_id)?;577			target_collection.check_is_owner(&sender)?;578579			target_collection.sponsorship = SponsorshipState::Disabled;580581			<Pallet<T>>::deposit_event(Event::<T>::CollectionSponsorRemoved(582				collection_id583			));584			target_collection.save()585		}586587		/// This method creates a concrete instance of NFT Collection created with CreateCollection method.588		///589		/// # Permissions590		///591		/// * Collection Owner.592		/// * Collection Admin.593		/// * Anyone if594		///     * Allow List is enabled, and595		///     * Address is added to allow list, and596		///     * MintPermission is enabled (see SetMintPermission method)597		///598		/// # Arguments599		///600		/// * collection_id: ID of the collection.601		///602		/// * owner: Address, initial owner of the NFT.603		///604		/// * data: Token data to store on chain.605		#[weight = T::CommonWeightInfo::create_item()]606		#[transactional]607		pub fn create_item(origin, collection_id: CollectionId, owner: T::CrossAccountId, data: CreateItemData) -> DispatchResultWithPostInfo {608			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);609			let budget = budget::Value::new(2);610611			dispatch_call::<T, _>(collection_id, |d| d.create_item(sender, owner, data, &budget))612		}613614		/// This method creates multiple items in a collection created with CreateCollection method.615		///616		/// # Permissions617		///618		/// * Collection Owner.619		/// * Collection Admin.620		/// * Anyone if621		///     * Allow List is enabled, and622		///     * Address is added to allow list, and623		///     * MintPermission is enabled (see SetMintPermission method)624		///625		/// # Arguments626		///627		/// * collection_id: ID of the collection.628		///629		/// * itemsData: Array items properties. Each property is an array of bytes itself, see [create_item].630		///631		/// * owner: Address, initial owner of the NFT.632		#[weight = T::CommonWeightInfo::create_multiple_items(&items_data)]633		#[transactional]634		pub fn create_multiple_items(origin, collection_id: CollectionId, owner: T::CrossAccountId, items_data: Vec<CreateItemData>) -> DispatchResultWithPostInfo {635			ensure!(!items_data.is_empty(), Error::<T>::EmptyArgument);636			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);637			let budget = budget::Value::new(2);638639			dispatch_call::<T, _>(collection_id, |d| d.create_multiple_items(sender, owner, items_data, &budget))640		}641642		#[weight = T::CommonWeightInfo::set_collection_properties(properties.len() as u32)]643		#[transactional]644		pub fn set_collection_properties(645			origin,646			collection_id: CollectionId,647			properties: Vec<Property>648		) -> DispatchResultWithPostInfo {649			ensure!(!properties.is_empty(), Error::<T>::EmptyArgument);650651			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);652653			dispatch_call::<T, _>(collection_id, |d| d.set_collection_properties(sender, properties))654		}655656		#[weight = T::CommonWeightInfo::delete_collection_properties(property_keys.len() as u32)]657		#[transactional]658		pub fn delete_collection_properties(659			origin,660			collection_id: CollectionId,661			property_keys: Vec<PropertyKey>,662		) -> DispatchResultWithPostInfo {663			ensure!(!property_keys.is_empty(), Error::<T>::EmptyArgument);664665			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);666667			dispatch_call::<T, _>(collection_id, |d| d.delete_collection_properties(&sender, property_keys))668		}669670		#[weight = T::CommonWeightInfo::set_token_properties(properties.len() as u32)]671		#[transactional]672		pub fn set_token_properties(673			origin,674			collection_id: CollectionId,675			token_id: TokenId,676			properties: Vec<Property>677		) -> DispatchResultWithPostInfo {678			ensure!(!properties.is_empty(), Error::<T>::EmptyArgument);679680			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);681682			dispatch_call::<T, _>(collection_id, |d| d.set_token_properties(sender, token_id, properties))683		}684685		#[weight = T::CommonWeightInfo::delete_token_properties(property_keys.len() as u32)]686		#[transactional]687		pub fn delete_token_properties(688			origin,689			collection_id: CollectionId,690			token_id: TokenId,691			property_keys: Vec<PropertyKey>692		) -> DispatchResultWithPostInfo {693			ensure!(!property_keys.is_empty(), Error::<T>::EmptyArgument);694695			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);696697			dispatch_call::<T, _>(collection_id, |d| d.delete_token_properties(sender, token_id, property_keys))698		}699700		#[weight = T::CommonWeightInfo::set_property_permissions(property_permissions.len() as u32)]701		#[transactional]702		pub fn set_property_permissions(703			origin,704			collection_id: CollectionId,705			property_permissions: Vec<PropertyKeyPermission>,706		) -> DispatchResultWithPostInfo {707			ensure!(!property_permissions.is_empty(), Error::<T>::EmptyArgument);708709			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);710711			dispatch_call::<T, _>(collection_id, |d| d.set_property_permissions(&sender, property_permissions))712		}713714		#[weight = T::CommonWeightInfo::create_multiple_items_ex(&data)]715		#[transactional]716		pub fn create_multiple_items_ex(origin, collection_id: CollectionId, data: CreateItemExData<T::CrossAccountId>) -> DispatchResultWithPostInfo {717			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);718			let budget = budget::Value::new(2);719720			dispatch_call::<T, _>(collection_id, |d| d.create_multiple_items_ex(sender, data, &budget))721		}722723		// TODO! transaction weight724725		/// Set transfers_enabled value for particular collection726		///727		/// # Permissions728		///729		/// * Collection Owner.730		///731		/// # Arguments732		///733		/// * collection_id: ID of the collection.734		///735		/// * value: New flag value.736		#[weight = <SelfWeightOf<T>>::set_transfers_enabled_flag()]737		#[transactional]738		pub fn set_transfers_enabled_flag(origin, collection_id: CollectionId, value: bool) -> DispatchResult {739			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);740			let mut target_collection = <CollectionHandle<T>>::try_get(collection_id)?;741			target_collection.check_is_owner(&sender)?;742743			// =========744745			target_collection.limits.transfers_enabled = Some(value);746			target_collection.save()747		}748749		/// Destroys a concrete instance of NFT.750		///751		/// # Permissions752		///753		/// * Collection Owner.754		/// * Collection Admin.755		/// * Current NFT Owner.756		///757		/// # Arguments758		///759		/// * collection_id: ID of the collection.760		///761		/// * item_id: ID of NFT to burn.762		#[weight = T::CommonWeightInfo::burn_item()]763		#[transactional]764		pub fn burn_item(origin, collection_id: CollectionId, item_id: TokenId, value: u128) -> DispatchResultWithPostInfo {765			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);766767			let post_info = dispatch_call::<T, _>(collection_id, |d| d.burn_item(sender, item_id, value))?;768			if value == 1 {769				<NftTransferBasket<T>>::remove(collection_id, item_id);770				<NftApproveBasket<T>>::remove(collection_id, item_id);771			}772			// Those maps should be cleared only if token disappears completly, need to move this part of logic to pallets?773			// <FungibleApproveBasket<T>>::remove(collection_id, sender.as_sub());774			// <RefungibleApproveBasket<T>>::remove((collection_id, item_id, sender.as_sub()));775			Ok(post_info)776		}777778		/// Destroys a concrete instance of NFT on behalf of the owner779		/// See also: [`approve`]780		///781		/// # Permissions782		///783		/// * Collection Owner.784		/// * Collection Admin.785		/// * Current NFT Owner.786		///787		/// # Arguments788		///789		/// * collection_id: ID of the collection.790		///791		/// * item_id: ID of NFT to burn.792		///793		/// * from: owner of item794		#[weight = T::CommonWeightInfo::burn_from()]795		#[transactional]796		pub fn burn_from(origin, collection_id: CollectionId, from: T::CrossAccountId, item_id: TokenId, value: u128) -> DispatchResultWithPostInfo {797			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);798			let budget = budget::Value::new(2);799800			dispatch_call::<T, _>(collection_id, |d| d.burn_from(sender, from, item_id, value, &budget))801		}802803		/// Change ownership of the token.804		///805		/// # Permissions806		///807		/// * Collection Owner808		/// * Collection Admin809		/// * Current NFT owner810		///811		/// # Arguments812		///813		/// * recipient: Address of token recipient.814		///815		/// * collection_id.816		///817		/// * item_id: ID of the item818		///     * Non-Fungible Mode: Required.819		///     * Fungible Mode: Ignored.820		///     * Re-Fungible Mode: Required.821		///822		/// * value: Amount to transfer.823		///     * Non-Fungible Mode: Ignored824		///     * Fungible Mode: Must specify transferred amount825		///     * Re-Fungible Mode: Must specify transferred portion (between 0 and 1)826		#[weight = T::CommonWeightInfo::transfer()]827		#[transactional]828		pub fn transfer(origin, recipient: T::CrossAccountId, collection_id: CollectionId, item_id: TokenId, value: u128) -> DispatchResultWithPostInfo {829			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);830			let budget = budget::Value::new(2);831832			dispatch_call::<T, _>(collection_id, |d| d.transfer(sender, recipient, item_id, value, &budget))833		}834835		/// Set, change, or remove approved address to transfer the ownership of the NFT.836		///837		/// # Permissions838		///839		/// * Collection Owner840		/// * Collection Admin841		/// * Current NFT owner842		///843		/// # Arguments844		///845		/// * approved: Address that is approved to transfer this NFT or zero (if needed to remove approval).846		///847		/// * collection_id.848		///849		/// * item_id: ID of the item.850		#[weight = T::CommonWeightInfo::approve()]851		#[transactional]852		pub fn approve(origin, spender: T::CrossAccountId, collection_id: CollectionId, item_id: TokenId, amount: u128) -> DispatchResultWithPostInfo {853			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);854855			dispatch_call::<T, _>(collection_id, |d| d.approve(sender, spender, item_id, amount))856		}857858		/// Change ownership of a NFT on behalf of the owner. See Approve method for additional information. After this method executes, the approval is removed so that the approved address will not be able to transfer this NFT again from this owner.859		///860		/// # Permissions861		/// * Collection Owner862		/// * Collection Admin863		/// * Current NFT owner864		/// * Address approved by current NFT owner865		///866		/// # Arguments867		///868		/// * from: Address that owns token.869		///870		/// * recipient: Address of token recipient.871		///872		/// * collection_id.873		///874		/// * item_id: ID of the item.875		///876		/// * value: Amount to transfer.877		#[weight = T::CommonWeightInfo::transfer_from()]878		#[transactional]879		pub fn transfer_from(origin, from: T::CrossAccountId, recipient: T::CrossAccountId, collection_id: CollectionId, item_id: TokenId, value: u128 ) -> DispatchResultWithPostInfo {880			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);881			let budget = budget::Value::new(2);882883			dispatch_call::<T, _>(collection_id, |d| d.transfer_from(sender, from, recipient, item_id, value, &budget))884		}885886		#[weight = <SelfWeightOf<T>>::set_collection_limits()]887		#[transactional]888		pub fn set_collection_limits(889			origin,890			collection_id: CollectionId,891			new_limit: CollectionLimits,892		) -> DispatchResult {893			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);894			let mut target_collection = <CollectionHandle<T>>::try_get(collection_id)?;895			target_collection.check_is_owner(&sender)?;896			let old_limit = &target_collection.limits;897898			target_collection.limits = <PalletCommon<T>>::clamp_limits(target_collection.mode.clone(), &old_limit, new_limit)?;899900			<Pallet<T>>::deposit_event(Event::<T>::CollectionLimitSet(901				collection_id902			));903904			target_collection.save()905		}906907		#[weight = <SelfWeightOf<T>>::set_collection_limits()]908		#[transactional]909		pub fn set_collection_permissions(910			origin,911			collection_id: CollectionId,912			new_limit: CollectionPermissions,913		) -> DispatchResult {914			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);915			let mut target_collection = <CollectionHandle<T>>::try_get(collection_id)?;916			target_collection.check_is_owner(&sender)?;917			let old_limit = &target_collection.permissions;918919			target_collection.permissions = <PalletCommon<T>>::clamp_permissions(target_collection.mode.clone(), &old_limit, new_limit)?;920921			<Pallet<T>>::deposit_event(Event::<T>::CollectionPermissionSet(922				collection_id923			));924925			target_collection.save()926		}927	}928}