git.delta.rocks / unique-network / refs/commits / abf7a55be1fb

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 core::{20	convert::{TryFrom, TryInto},21	fmt,22};23use frame_support::storage::bounded_btree_map::BoundedBTreeMap;24use sp_std::collections::btree_map::BTreeMap;2526#[cfg(feature = "serde")]27pub use serde::{Serialize, Deserialize};2829use sp_core::U256;30use sp_runtime::{ArithmeticError, sp_std::prelude::Vec};31use codec::{Decode, Encode, EncodeLike, MaxEncodedLen};32pub use frame_support::{33	BoundedVec, construct_runtime, decl_event, decl_module, decl_storage, decl_error,34	dispatch::DispatchResult,35	ensure, fail, parameter_types,36	traits::{37		Currency, ExistenceRequirement, Get, Imbalance, KeyOwnerProofSystem, OnUnbalanced,38		Randomness, IsSubType, WithdrawReasons,39	},40	weights::{41		constants::{BlockExecutionWeight, ExtrinsicBaseWeight, RocksDbWeight, WEIGHT_PER_SECOND},42		DispatchInfo, GetDispatchInfo, IdentityFee, Pays, PostDispatchInfo, Weight,43		WeightToFeePolynomial, DispatchClass,44	},45	StorageValue, transactional,46	pallet_prelude::ConstU32,47};48use derivative::Derivative;49use scale_info::TypeInfo;5051mod migration;5253pub const MAX_DECIMAL_POINTS: DecimalPoints = 30;54pub const MAX_REFUNGIBLE_PIECES: u128 = 1_000_000_000_000_000_000_000;55pub const MAX_SPONSOR_TIMEOUT: u32 = 10_368_000;5657pub const MAX_TOKEN_OWNERSHIP: u32 = if cfg!(not(feature = "limit-testing")) {58	100_00059} else {60	1061};62pub const COLLECTION_NUMBER_LIMIT: u32 = if cfg!(not(feature = "limit-testing")) {63	100_00064} else {65	1066};67pub const CUSTOM_DATA_LIMIT: u32 = if cfg!(not(feature = "limit-testing")) {68	204869} else {70	1071};72pub const COLLECTION_ADMINS_LIMIT: u32 = 5;73pub const COLLECTION_TOKEN_LIMIT: u32 = u32::MAX;74pub const ACCOUNT_TOKEN_OWNERSHIP_LIMIT: u32 = if cfg!(not(feature = "limit-testing")) {75	1_000_00076} else {77	1078};7980// Timeouts for item types in passed blocks81pub const NFT_SPONSOR_TRANSFER_TIMEOUT: u32 = 5;82pub const FUNGIBLE_SPONSOR_TRANSFER_TIMEOUT: u32 = 5;83pub const REFUNGIBLE_SPONSOR_TRANSFER_TIMEOUT: u32 = 5;8485pub const SPONSOR_APPROVE_TIMEOUT: u32 = 5;8687// Schema limits88pub const OFFCHAIN_SCHEMA_LIMIT: u32 = 8192;89pub const VARIABLE_ON_CHAIN_SCHEMA_LIMIT: u32 = 8192;90pub const CONST_ON_CHAIN_SCHEMA_LIMIT: u32 = 32768;9192pub const MAX_COLLECTION_NAME_LENGTH: u32 = 64;93pub const MAX_COLLECTION_DESCRIPTION_LENGTH: u32 = 256;94pub const MAX_TOKEN_PREFIX_LENGTH: u32 = 16;9596/// How much items can be created per single97/// create_many call98pub const MAX_ITEMS_PER_BATCH: u32 = 200;99100pub type CustomDataLimit = ConstU32<CUSTOM_DATA_LIMIT>;101102#[derive(103	Encode,104	Decode,105	PartialEq,106	Eq,107	PartialOrd,108	Ord,109	Clone,110	Copy,111	Debug,112	Default,113	TypeInfo,114	MaxEncodedLen,115)]116#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]117pub struct CollectionId(pub u32);118impl EncodeLike<u32> for CollectionId {}119impl EncodeLike<CollectionId> for u32 {}120121#[derive(122	Encode,123	Decode,124	PartialEq,125	Eq,126	PartialOrd,127	Ord,128	Clone,129	Copy,130	Debug,131	Default,132	TypeInfo,133	MaxEncodedLen,134)]135#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]136pub struct TokenId(pub u32);137impl EncodeLike<u32> for TokenId {}138impl EncodeLike<TokenId> for u32 {}139140impl TokenId {141	pub fn try_next(self) -> Result<TokenId, ArithmeticError> {142		self.0143			.checked_add(1)144			.ok_or(ArithmeticError::Overflow)145			.map(Self)146	}147}148149impl From<TokenId> for U256 {150	fn from(t: TokenId) -> Self {151		t.0.into()152	}153}154155impl TryFrom<U256> for TokenId {156	type Error = &'static str;157158	fn try_from(value: U256) -> Result<Self, Self::Error> {159		Ok(TokenId(value.try_into().map_err(|_| "too large token id")?))160	}161}162163pub struct OverflowError;164impl From<OverflowError> for &'static str {165	fn from(_: OverflowError) -> Self {166		"overflow occured"167	}168}169170pub type DecimalPoints = u8;171172#[derive(Encode, Decode, Eq, Debug, Clone, PartialEq, TypeInfo, MaxEncodedLen)]173#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]174pub enum CollectionMode {175	NFT,176	// decimal points177	Fungible(DecimalPoints),178	ReFungible,179}180181impl CollectionMode {182	pub fn id(&self) -> u8 {183		match self {184			CollectionMode::NFT => 1,185			CollectionMode::Fungible(_) => 2,186			CollectionMode::ReFungible => 3,187		}188	}189}190191pub trait SponsoringResolve<AccountId, Call> {192	fn resolve(who: &AccountId, call: &Call) -> Option<AccountId>;193}194195#[derive(Encode, Decode, Eq, Debug, Clone, PartialEq, TypeInfo, MaxEncodedLen)]196#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]197pub enum AccessMode {198	Normal,199	AllowList,200}201impl Default for AccessMode {202	fn default() -> Self {203		Self::Normal204	}205}206207#[derive(Encode, Decode, Eq, Debug, Clone, PartialEq, TypeInfo, MaxEncodedLen)]208#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]209pub enum SchemaVersion {210	ImageURL,211	Unique,212}213impl Default for SchemaVersion {214	fn default() -> Self {215		Self::ImageURL216	}217}218219#[derive(Encode, Decode, Default, Debug, Clone, PartialEq, TypeInfo)]220#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]221pub struct Ownership<AccountId> {222	pub owner: AccountId,223	pub fraction: u128,224}225226#[derive(Encode, Decode, Debug, Clone, PartialEq, TypeInfo, MaxEncodedLen)]227#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]228pub enum SponsorshipState<AccountId> {229	/// The fees are applied to the transaction sender230	Disabled,231	Unconfirmed(AccountId),232	/// Transactions are sponsored by specified account233	Confirmed(AccountId),234}235236impl<AccountId> SponsorshipState<AccountId> {237	pub fn sponsor(&self) -> Option<&AccountId> {238		match self {239			Self::Confirmed(sponsor) => Some(sponsor),240			_ => None,241		}242	}243244	pub fn pending_sponsor(&self) -> Option<&AccountId> {245		match self {246			Self::Unconfirmed(sponsor) | Self::Confirmed(sponsor) => Some(sponsor),247			_ => None,248		}249	}250251	pub fn confirmed(&self) -> bool {252		matches!(self, Self::Confirmed(_))253	}254}255256impl<T> Default for SponsorshipState<T> {257	fn default() -> Self {258		Self::Disabled259	}260}261262#[derive(Encode, Decode, Clone, PartialEq, TypeInfo, MaxEncodedLen)]263#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]264pub struct Collection<AccountId> {265	pub owner: AccountId,266	pub mode: CollectionMode,267	pub access: AccessMode,268	#[cfg_attr(feature = "serde1", serde(with = "bounded_serde"))]269	pub name: BoundedVec<u16, ConstU32<MAX_COLLECTION_NAME_LENGTH>>,270	#[cfg_attr(feature = "serde1", serde(with = "bounded_serde"))]271	pub description: BoundedVec<u16, ConstU32<MAX_COLLECTION_DESCRIPTION_LENGTH>>,272	#[cfg_attr(feature = "serde1", serde(with = "bounded_serde"))]273	pub token_prefix: BoundedVec<u8, ConstU32<MAX_TOKEN_PREFIX_LENGTH>>,274	pub mint_mode: bool,275	#[cfg_attr(feature = "serde1", serde(with = "bounded_serde"))]276	pub offchain_schema: BoundedVec<u8, ConstU32<OFFCHAIN_SCHEMA_LIMIT>>,277	pub schema_version: SchemaVersion,278	pub sponsorship: SponsorshipState<AccountId>,279	pub limits: CollectionLimits, // Collection private restrictions280	#[cfg_attr(feature = "serde1", serde(with = "bounded_serde"))]281	pub variable_on_chain_schema: BoundedVec<u8, ConstU32<VARIABLE_ON_CHAIN_SCHEMA_LIMIT>>,282	#[cfg_attr(feature = "serde1", serde(with = "bounded_serde"))]283	pub const_on_chain_schema: BoundedVec<u8, ConstU32<CONST_ON_CHAIN_SCHEMA_LIMIT>>,284	pub meta_update_permission: MetaUpdatePermission,285}286287#[derive(Encode, Decode, Clone, PartialEq, TypeInfo, Debug, Derivative, MaxEncodedLen)]288#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]289#[derivative(Default(bound = ""))]290pub struct CreateCollectionData<AccountId> {291	#[derivative(Default(value = "CollectionMode::NFT"))]292	pub mode: CollectionMode,293	pub access: Option<AccessMode>,294	#[cfg_attr(feature = "serde1", serde(with = "bounded_serde"))]295	pub name: BoundedVec<u16, ConstU32<MAX_COLLECTION_NAME_LENGTH>>,296	#[cfg_attr(feature = "serde1", serde(with = "bounded_serde"))]297	pub description: BoundedVec<u16, ConstU32<MAX_COLLECTION_DESCRIPTION_LENGTH>>,298	#[cfg_attr(feature = "serde1", serde(with = "bounded_serde"))]299	pub token_prefix: BoundedVec<u8, ConstU32<MAX_TOKEN_PREFIX_LENGTH>>,300	#[cfg_attr(feature = "serde1", serde(with = "bounded_serde"))]301	pub offchain_schema: BoundedVec<u8, ConstU32<OFFCHAIN_SCHEMA_LIMIT>>,302	pub schema_version: Option<SchemaVersion>,303	pub pending_sponsor: Option<AccountId>,304	pub limits: Option<CollectionLimits>,305	#[cfg_attr(feature = "serde1", serde(with = "bounded_serde"))]306	pub variable_on_chain_schema: BoundedVec<u8, ConstU32<VARIABLE_ON_CHAIN_SCHEMA_LIMIT>>,307	#[cfg_attr(feature = "serde1", serde(with = "bounded_serde"))]308	pub const_on_chain_schema: BoundedVec<u8, ConstU32<CONST_ON_CHAIN_SCHEMA_LIMIT>>,309	pub meta_update_permission: Option<MetaUpdatePermission>,310}311312#[derive(Encode, Decode, Debug, Clone, PartialEq, TypeInfo)]313#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]314pub struct NftItemType<AccountId> {315	pub owner: AccountId,316	pub const_data: Vec<u8>,317	pub variable_data: Vec<u8>,318}319320#[derive(Encode, Decode, Default, Debug, Clone, PartialEq, TypeInfo)]321#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]322pub struct FungibleItemType {323	pub value: u128,324}325326#[derive(Encode, Decode, Debug, Clone, PartialEq, TypeInfo)]327#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]328pub struct ReFungibleItemType<AccountId> {329	pub owner: Vec<Ownership<AccountId>>,330	pub const_data: Vec<u8>,331	pub variable_data: Vec<u8>,332}333334/// All fields are wrapped in `Option`s, where None means chain default335#[derive(Encode, Decode, Debug, Default, Clone, PartialEq, TypeInfo, MaxEncodedLen)]336#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]337pub struct CollectionLimits {338	pub account_token_ownership_limit: Option<u32>,339	pub sponsored_data_size: Option<u32>,340	/// None - setVariableMetadata is not sponsored341	/// Some(v) - setVariableMetadata is sponsored342	///           if there is v block between txs343	pub sponsored_data_rate_limit: Option<SponsoringRateLimit>,344	pub token_limit: Option<u32>,345346	// Timeouts for item types in passed blocks347	pub sponsor_transfer_timeout: Option<u32>,348	pub sponsor_approve_timeout: Option<u32>,349	pub owner_can_transfer: Option<bool>,350	pub owner_can_destroy: Option<bool>,351	pub transfers_enabled: Option<bool>,352}353354impl CollectionLimits {355	pub fn account_token_ownership_limit(&self) -> u32 {356		self.account_token_ownership_limit357			.unwrap_or(ACCOUNT_TOKEN_OWNERSHIP_LIMIT)358			.min(MAX_TOKEN_OWNERSHIP)359	}360	pub fn sponsored_data_size(&self) -> u32 {361		self.sponsored_data_size362			.unwrap_or(CUSTOM_DATA_LIMIT)363			.min(CUSTOM_DATA_LIMIT)364	}365	pub fn token_limit(&self) -> u32 {366		self.token_limit367			.unwrap_or(COLLECTION_TOKEN_LIMIT)368			.min(COLLECTION_TOKEN_LIMIT)369	}370	pub fn sponsor_transfer_timeout(&self, default: u32) -> u32 {371		self.sponsor_transfer_timeout372			.unwrap_or(default)373			.min(MAX_SPONSOR_TIMEOUT)374	}375	pub fn sponsor_approve_timeout(&self) -> u32 {376		self.sponsor_approve_timeout377			.unwrap_or(SPONSOR_APPROVE_TIMEOUT)378			.min(MAX_SPONSOR_TIMEOUT)379	}380	pub fn owner_can_transfer(&self) -> bool {381		self.owner_can_transfer.unwrap_or(true)382	}383	pub fn owner_can_destroy(&self) -> bool {384		self.owner_can_destroy.unwrap_or(true)385	}386	pub fn transfers_enabled(&self) -> bool {387		self.transfers_enabled.unwrap_or(true)388	}389	pub fn sponsored_data_rate_limit(&self) -> Option<u32> {390		match self391			.sponsored_data_rate_limit392			.unwrap_or(SponsoringRateLimit::SponsoringDisabled)393		{394			SponsoringRateLimit::SponsoringDisabled => None,395			SponsoringRateLimit::Blocks(v) => Some(v.min(MAX_SPONSOR_TIMEOUT)),396		}397	}398}399400#[derive(Encode, Decode, Debug, Clone, Copy, PartialEq, TypeInfo, MaxEncodedLen)]401#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]402pub enum SponsoringRateLimit {403	SponsoringDisabled,404	Blocks(u32),405}406407/// BoundedVec doesn't supports serde408#[cfg(feature = "serde1")]409mod bounded_serde {410	use core::convert::TryFrom;411	use frame_support::{BoundedVec, traits::Get};412	use serde::{413		ser::{self, Serialize},414		de::{self, Deserialize, Error},415	};416	use sp_std::vec::Vec;417418	pub fn serialize<D, V, S>(value: &BoundedVec<V, S>, serializer: D) -> Result<D::Ok, D::Error>419	where420		D: ser::Serializer,421		V: Serialize,422	{423		(value as &Vec<_>).serialize(serializer)424	}425426	pub fn deserialize<'de, D, V, S>(deserializer: D) -> Result<BoundedVec<V, S>, D::Error>427	where428		D: de::Deserializer<'de>,429		V: de::Deserialize<'de>,430		S: Get<u32>,431	{432		// TODO: Implement custom visitor, which will limit vec size at parse time? Will serde only be used by chainspec?433		let vec = <Vec<V>>::deserialize(deserializer)?;434		let len = vec.len();435		TryFrom::try_from(vec).map_err(|_| D::Error::invalid_length(len, &"lesser size"))436	}437}438439fn bounded_debug<V, S>(v: &BoundedVec<V, S>, f: &mut fmt::Formatter) -> Result<(), fmt::Error>440where441	V: fmt::Debug,442{443	use core::fmt::Debug;444	(&v as &Vec<V>).fmt(f)445}446447#[cfg(feature = "serde1")]448#[allow(dead_code)]449mod bounded_map_serde {450	use core::convert::TryFrom;451	use sp_std::collections::btree_map::BTreeMap;452	use frame_support::{traits::Get, storage::bounded_btree_map::BoundedBTreeMap};453	use serde::{454		ser::{self, Serialize},455		de::{self, Deserialize, Error},456	};457	pub fn serialize<D, K, V, S>(458		value: &BoundedBTreeMap<K, V, S>,459		serializer: D,460	) -> Result<D::Ok, D::Error>461	where462		D: ser::Serializer,463		K: Serialize + Ord,464		V: Serialize,465	{466		(value as &BTreeMap<_, _>).serialize(serializer)467	}468469	pub fn deserialize<'de, D, K, V, S>(470		deserializer: D,471	) -> Result<BoundedBTreeMap<K, V, S>, D::Error>472	where473		D: de::Deserializer<'de>,474		K: de::Deserialize<'de> + Ord,475		V: de::Deserialize<'de>,476		S: Get<u32>,477	{478		let map = <BTreeMap<K, V>>::deserialize(deserializer)?;479		let len = map.len();480		TryFrom::try_from(map).map_err(|_| D::Error::invalid_length(len, &"lesser size"))481	}482}483484fn bounded_map_debug<K, V, S>(485	v: &BoundedBTreeMap<K, V, S>,486	f: &mut fmt::Formatter,487) -> Result<(), fmt::Error>488where489	K: fmt::Debug + Ord,490	V: fmt::Debug,491{492	use core::fmt::Debug;493	(&v as &BTreeMap<K, V>).fmt(f)494}495496#[derive(Encode, Decode, MaxEncodedLen, Default, PartialEq, Clone, Derivative, TypeInfo)]497#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]498#[derivative(Debug)]499pub struct CreateNftData {500	#[cfg_attr(feature = "serde1", serde(with = "bounded_serde"))]501	#[derivative(Debug(format_with = "bounded_debug"))]502	pub const_data: BoundedVec<u8, CustomDataLimit>,503	#[cfg_attr(feature = "serde1", serde(with = "bounded_serde"))]504	#[derivative(Debug(format_with = "bounded_debug"))]505	pub variable_data: BoundedVec<u8, CustomDataLimit>,506}507508#[derive(Encode, Decode, MaxEncodedLen, Default, Debug, Clone, PartialEq, TypeInfo)]509#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]510pub struct CreateFungibleData {511	pub value: u128,512}513514#[derive(Encode, Decode, MaxEncodedLen, Default, PartialEq, Clone, Derivative, TypeInfo)]515#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]516#[derivative(Debug)]517pub struct CreateReFungibleData {518	#[cfg_attr(feature = "serde1", serde(with = "bounded_serde"))]519	#[derivative(Debug(format_with = "bounded_debug"))]520	pub const_data: BoundedVec<u8, CustomDataLimit>,521	#[cfg_attr(feature = "serde1", serde(with = "bounded_serde"))]522	#[derivative(Debug(format_with = "bounded_debug"))]523	pub variable_data: BoundedVec<u8, CustomDataLimit>,524	pub pieces: u128,525}526527#[derive(Encode, Decode, Debug, Clone, PartialEq, TypeInfo, MaxEncodedLen)]528#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]529pub enum MetaUpdatePermission {530	ItemOwner,531	Admin,532	None,533}534535impl Default for MetaUpdatePermission {536	fn default() -> Self {537		Self::ItemOwner538	}539}540541#[derive(Encode, Decode, MaxEncodedLen, PartialEq, Clone, Debug, TypeInfo)]542#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]543pub enum CreateItemData {544	NFT(CreateNftData),545	Fungible(CreateFungibleData),546	ReFungible(CreateReFungibleData),547}548549#[derive(Encode, Decode, MaxEncodedLen, PartialEq, Clone, TypeInfo, Derivative)]550#[derivative(Debug)]551pub struct CreateNftExData<CrossAccountId> {552	#[derivative(Debug(format_with = "bounded_debug"))]553	pub const_data: BoundedVec<u8, CustomDataLimit>,554	#[derivative(Debug(format_with = "bounded_debug"))]555	pub variable_data: BoundedVec<u8, CustomDataLimit>,556	pub owner: CrossAccountId,557}558559#[derive(Encode, Decode, MaxEncodedLen, PartialEq, Clone, TypeInfo, Derivative)]560#[derivative(Debug(bound = "CrossAccountId: fmt::Debug + Ord"))]561pub struct CreateRefungibleExData<CrossAccountId> {562	#[derivative(Debug(format_with = "bounded_debug"))]563	pub const_data: BoundedVec<u8, CustomDataLimit>,564	#[derivative(Debug(format_with = "bounded_debug"))]565	pub variable_data: BoundedVec<u8, CustomDataLimit>,566	#[derivative(Debug(format_with = "bounded_map_debug"))]567	pub users: BoundedBTreeMap<CrossAccountId, u128, ConstU32<MAX_ITEMS_PER_BATCH>>,568}569570#[derive(Encode, Decode, MaxEncodedLen, PartialEq, Clone, TypeInfo, Derivative)]571#[derivative(Debug(bound = "CrossAccountId: fmt::Debug + Ord"))]572pub enum CreateItemExData<CrossAccountId> {573	NFT(574		#[derivative(Debug(format_with = "bounded_debug"))]575		BoundedVec<CreateNftExData<CrossAccountId>, ConstU32<MAX_ITEMS_PER_BATCH>>,576	),577	Fungible(578		#[derivative(Debug(format_with = "bounded_map_debug"))]579		BoundedBTreeMap<CrossAccountId, u128, ConstU32<MAX_ITEMS_PER_BATCH>>,580	),581	/// Many tokens, each may have only one owner582	RefungibleMultipleItems(583		#[derivative(Debug(format_with = "bounded_debug"))]584		BoundedVec<CreateRefungibleExData<CrossAccountId>, ConstU32<MAX_ITEMS_PER_BATCH>>,585	),586	/// Single token, which may have many owners587	RefungibleMultipleOwners(CreateRefungibleExData<CrossAccountId>),588}589590impl CreateItemData {591	pub fn data_size(&self) -> usize {592		match self {593			CreateItemData::NFT(data) => data.variable_data.len() + data.const_data.len(),594			CreateItemData::ReFungible(data) => data.variable_data.len() + data.const_data.len(),595			_ => 0,596		}597	}598}599600impl From<CreateNftData> for CreateItemData {601	fn from(item: CreateNftData) -> Self {602		CreateItemData::NFT(item)603	}604}605606impl From<CreateReFungibleData> for CreateItemData {607	fn from(item: CreateReFungibleData) -> Self {608		CreateItemData::ReFungible(item)609	}610}611612impl From<CreateFungibleData> for CreateItemData {613	fn from(item: CreateFungibleData) -> Self {614		CreateItemData::Fungible(item)615	}616}617618#[derive(Encode, Decode, MaxEncodedLen, PartialEq, Clone, Debug, TypeInfo)]619#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]620pub struct CollectionStats {621	pub created: u32,622	pub destroyed: u32,623	pub alive: u32,624}