git.delta.rocks / unique-network / refs/commits / dc9fdbfccd6a

1//2// This file is subject to the terms and conditions defined in3// file 'LICENSE', which is part of this source code package.4//56#![recursion_limit = "1024"]78#![cfg_attr(not(feature = "std"), no_std)]910#[cfg(feature = "std")]11pub use std::*;1213#[cfg(feature = "std")]14pub use serde::*;1516pub use frame_support::{17    construct_runtime, decl_event, decl_module, decl_storage, decl_error,18    dispatch::DispatchResult,19    ensure, fail, parameter_types,20    traits::{21        Currency, ExistenceRequirement, Get, Imbalance, KeyOwnerProofSystem, OnUnbalanced,22        Randomness, IsSubType, WithdrawReasons,23    },24    weights::{25        constants::{BlockExecutionWeight, ExtrinsicBaseWeight, RocksDbWeight, WEIGHT_PER_SECOND},26        DispatchInfo, GetDispatchInfo, IdentityFee, Pays, PostDispatchInfo, Weight,27        WeightToFeePolynomial, DispatchClass,28    },29    StorageValue,30    transactional,31};3233use frame_system::{self as system, ensure_signed, ensure_root};34use sp_runtime::sp_std::prelude::Vec;35use core::ops::{Deref, DerefMut};36use nft_data_structs::{37    MAX_DECIMAL_POINTS, MAX_SPONSOR_TIMEOUT, MAX_TOKEN_OWNERSHIP, MAX_REFUNGIBLE_PIECES,38	AccessMode, ChainLimits, Collection, CreateItemData, CollectionLimits,39    CollectionId, CollectionMode, TokenId, 40    SchemaVersion, SponsorshipState, Ownership,41    NftItemType, FungibleItemType, ReFungibleItemType42};4344#[cfg(test)]45mod mock;4647#[cfg(test)]48mod tests;4950mod default_weights;5152#[cfg(feature = "runtime-benchmarks")]53mod benchmarking;5455pub trait WeightInfo {56	fn create_collection() -> Weight;57	fn destroy_collection() -> Weight;58	fn add_to_white_list() -> Weight;59	fn remove_from_white_list() -> Weight;60    fn set_public_access_mode() -> Weight;61    fn set_mint_permission() -> Weight;62    fn change_collection_owner() -> Weight;63    fn add_collection_admin() -> Weight;64    fn remove_collection_admin() -> Weight;65    fn set_collection_sponsor() -> Weight;66    fn confirm_sponsorship() -> Weight;67    fn remove_collection_sponsor() -> Weight;68    fn create_item(s: usize) -> Weight;69    fn burn_item() -> Weight;70    fn transfer() -> Weight;71    fn approve() -> Weight;72    fn transfer_from() -> Weight;73    fn set_offchain_schema() -> Weight;74    fn set_const_on_chain_schema() -> Weight;75    fn set_variable_on_chain_schema() -> Weight;76    fn set_variable_meta_data() -> Weight;77    fn enable_contract_sponsoring() -> Weight;78    fn set_schema_version() -> Weight;79    fn set_chain_limits() -> Weight;80    fn set_contract_sponsoring_rate_limit() -> Weight;81    fn set_variable_meta_data_sponsoring_rate_limit() -> Weight;82    fn toggle_contract_white_list() -> Weight;83    fn add_to_contract_white_list() -> Weight;84    fn remove_from_contract_white_list() -> Weight;85    fn set_collection_limits() -> Weight;86}8788decl_error! {89	/// Error for non-fungible-token module.90	pub enum Error for Module<T: Config> {91        /// Total collections bound exceeded.92        TotalCollectionsLimitExceeded,93		/// Decimal_points parameter must be lower than MAX_DECIMAL_POINTS constant, currently it is 30.94        CollectionDecimalPointLimitExceeded, 95        /// Collection name can not be longer than 63 char.96        CollectionNameLimitExceeded, 97        /// Collection description can not be longer than 255 char.98        CollectionDescriptionLimitExceeded, 99        /// Token prefix can not be longer than 15 char.100        CollectionTokenPrefixLimitExceeded,101        /// This collection does not exist.102        CollectionNotFound,103        /// Item not exists.104        TokenNotFound,105        /// Admin not found106        AdminNotFound,107        /// Arithmetic calculation overflow.108        NumOverflow,       109        /// Account already has admin role.110        AlreadyAdmin,  111        /// You do not own this collection.112        NoPermission,113        /// This address is not set as sponsor, use setCollectionSponsor first.114        ConfirmUnsetSponsorFail,115        /// Collection is not in mint mode.116        PublicMintingNotAllowed,117        /// Sender parameter and item owner must be equal.118        MustBeTokenOwner,119        /// Item balance not enough.120        TokenValueTooLow,121        /// Size of item is too large.122        NftSizeLimitExceeded,123        /// No approve found124        ApproveNotFound,125        /// Requested value more than approved.126        TokenValueNotEnough,127        /// Only approved addresses can call this method.128        ApproveRequired,129        /// Address is not in white list.130        AddresNotInWhiteList,131        /// Number of collection admins bound exceeded.132        CollectionAdminsLimitExceeded,133        /// Owned tokens by a single address bound exceeded.134        AddressOwnershipLimitExceeded,135        /// Length of items properties must be greater than 0.136        EmptyArgument,137        /// const_data exceeded data limit.138        TokenConstDataLimitExceeded,139        /// variable_data exceeded data limit.140        TokenVariableDataLimitExceeded,141        /// Not NFT item data used to mint in NFT collection.142        NotNftDataUsedToMintNftCollectionToken,143        /// Not Fungible item data used to mint in Fungible collection.144        NotFungibleDataUsedToMintFungibleCollectionToken,145        /// Not Re Fungible item data used to mint in Re Fungible collection.146        NotReFungibleDataUsedToMintReFungibleCollectionToken,147        /// Unexpected collection type.148        UnexpectedCollectionType,149        /// Can't store metadata in fungible tokens.150        CantStoreMetadataInFungibleTokens,151        /// Collection token limit exceeded152        CollectionTokenLimitExceeded,153        /// Account token limit exceeded per collection154        AccountTokenLimitExceeded,155        /// Collection limit bounds per collection exceeded156        CollectionLimitBoundsExceeded,157        /// Tried to enable permissions which are only permitted to be disabled158        OwnerPermissionsCantBeReverted,159        /// Schema data size limit bound exceeded160        SchemaDataLimitExceeded,161        /// Maximum refungibility exceeded162        WrongRefungiblePieces,163        /// createRefungible should be called with one owner164        BadCreateRefungibleCall,165	}166}167168pub struct CollectionHandle<T: system::Config> {169    pub id: CollectionId,170    pub collection: Collection<T>,171}172173impl<T: frame_system::Config> Deref for CollectionHandle<T> {174    type Target = Collection<T>;175176    fn deref(&self) -> &Self::Target {177        &self.collection178    }179}180181impl<T: frame_system::Config> DerefMut for CollectionHandle<T> {182    fn deref_mut(&mut self) -> &mut Self::Target {183        &mut self.collection184    }185}186187pub trait Config: system::Config + Sized {188    type Event: From<Event<Self>> + Into<<Self as system::Config>::Event>;189190    /// Weight information for extrinsics in this pallet.191	type WeightInfo: WeightInfo;192193    type Currency: Currency<Self::AccountId>;194    type CollectionCreationPrice: Get<<<Self as Config>::Currency as Currency<Self::AccountId>>::Balance>;195    type TreasuryAccountId: Get<Self::AccountId>;196}197198// # Used definitions199//200// ## User control levels201//202// chain-controlled - key is uncontrolled by user203//                    i.e autoincrementing index204//                    can use non-cryptographic hash205// real - key is controlled by user206//        but it is hard to generate enough colliding values, i.e owner of signed txs207//        can use non-cryptographic hash208// controlled - key is completly controlled by users209//              i.e maps with mutable keys210//              should use cryptographic hash211//212// ## User control level downgrade reasons213//214// ?1 - chain-controlled -> controlled215//      collections/tokens can be destroyed, resulting in massive holes216// ?2 - chain-controlled -> controlled217//      same as ?1, but can be only added, resulting in easier exploitation218// ?3 - real -> controlled219//      no confirmation required, so addresses can be easily generated220decl_storage! {221    trait Store for Module<T: Config> as Nft {222223        //#region Private members224        /// Id of next collection225        CreatedCollectionCount: u32;226        /// Used for migrations227        ChainVersion: u64;228        /// Id of last collection token229        /// Collection id (controlled?1)230        ItemListIndex: map hasher(blake2_128_concat) CollectionId => TokenId;231        //#endregion232233        //#region Chain limits struct234        pub ChainLimit get(fn chain_limit) config(): ChainLimits;235        //#endregion236237        //#region Bound counters238        /// Amount of collections destroyed, used for total amount tracking with239        /// CreatedCollectionCount240        DestroyedCollectionCount: u32;241        /// Total amount of account owned tokens (NFTs + RFTs + unique fungibles)242        /// Account id (real)243        pub AccountItemCount get(fn account_item_count): map hasher(twox_64_concat) T::AccountId => u32;244        //#endregion245246        //#region Basic collections247        /// Collection info248        /// Collection id (controlled?1)249        pub CollectionById get(fn collection_id) config(): map hasher(blake2_128_concat) CollectionId => Option<Collection<T>> = None;250        /// List of collection admins251        /// Collection id (controlled?2)252        pub AdminList get(fn admin_list_collection): map hasher(blake2_128_concat) CollectionId => Vec<T::AccountId>;253        /// Whitelisted collection users254        /// Collection id (controlled?2), user id (controlled?3)255        pub WhiteList get(fn white_list): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) T::AccountId => bool;256        //#endregion257258        /// How many of collection items user have259        /// Collection id (controlled?2), account id (real)260        pub Balance get(fn balance_count): double_map hasher(blake2_128_concat) CollectionId, hasher(twox_64_concat) T::AccountId => u128;261262        /// Amount of items which spender can transfer out of owners account (via transferFrom)263        /// Collection id (controlled?2), (token id (controlled ?2) + owner account id (real) + spender account id (controlled?3))264        /// TODO: Off chain worker should remove from this map when token gets removed265        pub Allowances get(fn approved): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) (TokenId, T::AccountId, T::AccountId) => u128;266267        //#region Item collections268        /// Collection id (controlled?2), token id (controlled?1)269        pub NftItemList get(fn nft_item_id) config(): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => Option<NftItemType<T::AccountId>>;270        /// Collection id (controlled?2), owner (controlled?2)271        pub FungibleItemList get(fn fungible_item_id) config(): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) T::AccountId => FungibleItemType;272        /// Collection id (controlled?2), token id (controlled?1)273        pub ReFungibleItemList get(fn refungible_item_id) config(): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => Option<ReFungibleItemType<T::AccountId>>;274        //#endregion275276        //#region Index list277        /// Collection id (controlled?2), tokens owner (controlled?2)278        pub AddressTokens get(fn address_tokens): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) T::AccountId => Vec<TokenId>;279        //#endregion280281        //#region Tokens transfer rate limit baskets282        /// (Collection id (controlled?2), who created (real))283        /// TODO: Off chain worker should remove from this map when collection gets removed284        pub CreateItemBasket get(fn create_item_basket): map hasher(blake2_128_concat) (CollectionId, T::AccountId) => T::BlockNumber;285        /// Collection id (controlled?2), token id (controlled?2)286        pub NftTransferBasket get(fn nft_transfer_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => T::BlockNumber;287        /// Collection id (controlled?2), owning user (real)288        pub FungibleTransferBasket get(fn fungible_transfer_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(twox_64_concat) T::AccountId => T::BlockNumber;289        /// Collection id (controlled?2), token id (controlled?2)290        pub ReFungibleTransferBasket get(fn refungible_transfer_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => T::BlockNumber;291        //#endregion292293        /// Variable metadata sponsoring294        /// Collection id (controlled?2), token id (controlled?2)295        pub VariableMetaDataBasket get(fn variable_meta_data_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => Option<T::BlockNumber> = None;296      297        //#region Contract Sponsorship and Ownership298        /// Contract address (real)299        pub ContractOwner get(fn contract_owner): map hasher(twox_64_concat) T::AccountId => Option<T::AccountId>;300        /// Contract address (real)301        pub ContractSelfSponsoring get(fn contract_self_sponsoring): map hasher(twox_64_concat) T::AccountId => bool;302        /// (Contract address(real), caller (real))303        pub ContractSponsorBasket get(fn contract_sponsor_basket): map hasher(twox_64_concat) (T::AccountId, T::AccountId) => T::BlockNumber;304        /// Contract address (real)305        pub ContractSponsoringRateLimit get(fn contract_sponsoring_rate_limit): map hasher(twox_64_concat) T::AccountId => T::BlockNumber;306        /// Contract address (real)307        pub ContractWhiteListEnabled get(fn contract_white_list_enabled): map hasher(twox_64_concat) T::AccountId => bool; 308        /// Contract address (real) => Whitelisted user (controlled?3)309        pub ContractWhiteList get(fn contract_white_list): double_map hasher(twox_64_concat) T::AccountId, hasher(blake2_128_concat) T::AccountId => bool; 310        //#endregion311    }312    add_extra_genesis {313        build(|config: &GenesisConfig<T>| {314            // Modification of storage315            for (_num, _c) in &config.collection_id {316                <Module<T>>::init_collection(_c);317            }318319            for (_num, _c, _i) in &config.nft_item_id {320                <Module<T>>::init_nft_token(*_c, _i);321            }322323            for (collection_id, account_id, fungible_item) in &config.fungible_item_id {324                <Module<T>>::init_fungible_token(*collection_id, account_id, fungible_item);325            }326327            for (_num, _c, _i) in &config.refungible_item_id {328                <Module<T>>::init_refungible_token(*_c, _i);329            }330        })331    }332}333334decl_event!(335    pub enum Event<T>336    where337        AccountId = <T as system::Config>::AccountId,338    {339        /// New collection was created340        /// 341        /// # Arguments342        /// 343        /// * collection_id: Globally unique identifier of newly created collection.344        /// 345        /// * mode: [CollectionMode] converted into u8.346        /// 347        /// * account_id: Collection owner.348        CollectionCreated(CollectionId, u8, AccountId),349350        /// New item was created.351        /// 352        /// # Arguments353        /// 354        /// * collection_id: Id of the collection where item was created.355        /// 356        /// * item_id: Id of an item. Unique within the collection.357        ///358        /// * recipient: Owner of newly created item 359        ItemCreated(CollectionId, TokenId, AccountId),360361        /// Collection item was burned.362        /// 363        /// # Arguments364        /// 365        /// collection_id.366        /// 367        /// item_id: Identifier of burned NFT.368        ItemDestroyed(CollectionId, TokenId),369370        /// Item was transferred371        ///372        /// * collection_id: Id of collection to which item is belong373        ///374        /// * item_id: Id of an item375        ///376        /// * sender: Original owner of item377        ///378        /// * recipient: New owner of item379        ///380        /// * amount: Always 1 for NFT381        Transfer(CollectionId, TokenId, AccountId, AccountId, u128),382383        /// * collection_id384        ///385        /// * item_id386        ///387        /// * sender388        ///389        /// * spender390        ///391        /// * amount392        Approved(CollectionId, TokenId, AccountId, AccountId, u128),393    }394);395396decl_module! {397    pub struct Module<T: Config> for enum Call 398    where 399        origin: T::Origin400    {401        fn deposit_event() = default;402        type Error = Error<T>;403404        fn on_initialize(_now: T::BlockNumber) -> Weight {405            0406        }407408        /// 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 and admin of the collection are set to the address that signed the transaction. Both addresses can be changed later.409        /// 410        /// # Permissions411        /// 412        /// * Anyone.413        /// 414        /// # Arguments415        /// 416        /// * collection_name: UTF-16 string with collection name (limit 64 characters), will be stored as zero-terminated.417        /// 418        /// * collection_description: UTF-16 string with collection description (limit 256 characters), will be stored as zero-terminated.419        /// 420        /// * token_prefix: UTF-8 string with token prefix.421        /// 422        /// * mode: [CollectionMode] collection type and type dependent data.423        // returns collection ID424        #[weight = <T as Config>::WeightInfo::create_collection()]425        #[transactional]426        pub fn create_collection(origin,427                                 collection_name: Vec<u16>,428                                 collection_description: Vec<u16>,429                                 token_prefix: Vec<u8>,430                                 mode: CollectionMode) -> DispatchResult {431432            // Anyone can create a collection433            let who = ensure_signed(origin)?;434435            // Take a (non-refundable) deposit of collection creation436            let mut imbalance = <<<T as Config>::Currency as Currency<T::AccountId>>::PositiveImbalance>::zero();437            imbalance.subsume(<<T as Config>::Currency as Currency<T::AccountId>>::deposit_creating(438                &T::TreasuryAccountId::get(),439                T::CollectionCreationPrice::get(),440            ));441            <T as Config>::Currency::settle(442                &who,443                imbalance,444                WithdrawReasons::TRANSFER,445                ExistenceRequirement::KeepAlive,446            ).map_err(|_| Error::<T>::NoPermission)?;447448            let decimal_points = match mode {449                CollectionMode::Fungible(points) => points,450                _ => 0451            };452453            let chain_limit = ChainLimit::get();454455            let created_count = CreatedCollectionCount::get();456            let destroyed_count = DestroyedCollectionCount::get();457458            // bound Total number of collections459            ensure!(created_count - destroyed_count < chain_limit.collection_numbers_limit, Error::<T>::TotalCollectionsLimitExceeded);460461            // check params462            ensure!(decimal_points <= MAX_DECIMAL_POINTS, Error::<T>::CollectionDecimalPointLimitExceeded);463            ensure!(collection_name.len() <= 64, Error::<T>::CollectionNameLimitExceeded);464            ensure!(collection_description.len() <= 256, Error::<T>::CollectionDescriptionLimitExceeded);465            ensure!(token_prefix.len() <= 16, Error::<T>::CollectionTokenPrefixLimitExceeded);466467            // Generate next collection ID468            let next_id = created_count469                .checked_add(1)470                .ok_or(Error::<T>::NumOverflow)?;471472            CreatedCollectionCount::put(next_id);473474            let limits = CollectionLimits {475                sponsored_data_size: chain_limit.custom_data_limit,476                ..Default::default()477            };478479            // Create new collection480            let new_collection = Collection {481                owner: who.clone(),482                name: collection_name,483                mode: mode.clone(),484                mint_mode: false,485                access: AccessMode::Normal,486                description: collection_description,487                decimal_points: decimal_points,488                token_prefix: token_prefix,489                offchain_schema: Vec::new(),490                schema_version: SchemaVersion::ImageURL,491                sponsorship: SponsorshipState::Disabled,492                variable_on_chain_schema: Vec::new(),493                const_on_chain_schema: Vec::new(),494                limits,495            };496497            // Add new collection to map498            <CollectionById<T>>::insert(next_id, new_collection);499500            // call event501            Self::deposit_event(RawEvent::CollectionCreated(next_id, mode.into(), who.clone()));502503            Ok(())504        }505506        /// **DANGEROUS**: Destroys collection and all NFTs within this collection. Users irrecoverably lose their assets and may lose real money.507        /// 508        /// # Permissions509        /// 510        /// * Collection Owner.511        /// 512        /// # Arguments513        /// 514        /// * collection_id: collection to destroy.515        #[weight = <T as Config>::WeightInfo::destroy_collection()]516        #[transactional]517        pub fn destroy_collection(origin, collection_id: CollectionId) -> DispatchResult {518519            let sender = ensure_signed(origin)?;520            let collection = Self::get_collection(collection_id)?;521            Self::check_owner_permissions(&collection, sender)?;522            if !collection.limits.owner_can_destroy {523                fail!(Error::<T>::NoPermission);524            }525526            <AddressTokens<T>>::remove_prefix(collection_id);527            <Allowances<T>>::remove_prefix(collection_id);528            <Balance<T>>::remove_prefix(collection_id);529            <ItemListIndex>::remove(collection_id);530            <AdminList<T>>::remove(collection_id);531            <CollectionById<T>>::remove(collection_id);532            <WhiteList<T>>::remove_prefix(collection_id);533534            <NftItemList<T>>::remove_prefix(collection_id);535            <FungibleItemList<T>>::remove_prefix(collection_id);536            <ReFungibleItemList<T>>::remove_prefix(collection_id);537538            <NftTransferBasket<T>>::remove_prefix(collection_id);539            <FungibleTransferBasket<T>>::remove_prefix(collection_id);540            <ReFungibleTransferBasket<T>>::remove_prefix(collection_id);541542            <VariableMetaDataBasket<T>>::remove_prefix(collection_id);543544            DestroyedCollectionCount::put(DestroyedCollectionCount::get()545                .checked_add(1)546                .ok_or(Error::<T>::NumOverflow)?);547548            Ok(())549        }550551        /// Add an address to white list.552        /// 553        /// # Permissions554        /// 555        /// * Collection Owner556        /// * Collection Admin557        /// 558        /// # Arguments559        /// 560        /// * collection_id.561        /// 562        /// * address.563        #[weight = <T as Config>::WeightInfo::add_to_white_list()]564        #[transactional]565        pub fn add_to_white_list(origin, collection_id: CollectionId, address: T::AccountId) -> DispatchResult{566567            let sender = ensure_signed(origin)?;568            let collection = Self::get_collection(collection_id)?;569            Self::check_owner_or_admin_permissions(&collection, sender)?;570571            <WhiteList<T>>::insert(collection_id, address, true);572            573            Ok(())574        }575576        /// Remove an address from white list.577        /// 578        /// # Permissions579        /// 580        /// * Collection Owner581        /// * Collection Admin582        /// 583        /// # Arguments584        /// 585        /// * collection_id.586        /// 587        /// * address.588        #[weight = <T as Config>::WeightInfo::remove_from_white_list()]589        #[transactional]590        pub fn remove_from_white_list(origin, collection_id: CollectionId, address: T::AccountId) -> DispatchResult{591592            let sender = ensure_signed(origin)?;593            let collection = Self::get_collection(collection_id)?;594            Self::check_owner_or_admin_permissions(&collection, sender)?;595596            <WhiteList<T>>::remove(collection_id, address);597598            Ok(())599        }600601        /// Toggle between normal and white list access for the methods with access for `Anyone`.602        /// 603        /// # Permissions604        /// 605        /// * Collection Owner.606        /// 607        /// # Arguments608        /// 609        /// * collection_id.610        /// 611        /// * mode: [AccessMode]612        #[weight = <T as Config>::WeightInfo::set_public_access_mode()]613        #[transactional]614        pub fn set_public_access_mode(origin, collection_id: CollectionId, mode: AccessMode) -> DispatchResult615        {616            let sender = ensure_signed(origin)?;617618            let mut target_collection = Self::get_collection(collection_id)?;619            Self::check_owner_permissions(&target_collection, sender)?;620            target_collection.access = mode;621            Self::save_collection(target_collection);622623            Ok(())624        }625626        /// Allows Anyone to create tokens if:627        /// * White List is enabled, and628        /// * Address is added to white list, and629        /// * This method was called with True parameter630        /// 631        /// # Permissions632        /// * Collection Owner633        ///634        /// # Arguments635        /// 636        /// * collection_id.637        /// 638        /// * mint_permission: Boolean parameter. If True, allows minting to Anyone with conditions above.639        #[weight = <T as Config>::WeightInfo::set_mint_permission()]640        #[transactional]641        pub fn set_mint_permission(origin, collection_id: CollectionId, mint_permission: bool) -> DispatchResult642        {643            let sender = ensure_signed(origin)?;644645            let mut target_collection = Self::get_collection(collection_id)?;646            Self::check_owner_permissions(&target_collection, sender)?;647            target_collection.mint_mode = mint_permission;648            Self::save_collection(target_collection);649650            Ok(())651        }652653        /// Change the owner of the collection.654        /// 655        /// # Permissions656        /// 657        /// * Collection Owner.658        /// 659        /// # Arguments660        /// 661        /// * collection_id.662        /// 663        /// * new_owner.664        #[weight = <T as Config>::WeightInfo::change_collection_owner()]665        #[transactional]666        pub fn change_collection_owner(origin, collection_id: CollectionId, new_owner: T::AccountId) -> DispatchResult {667668            let sender = ensure_signed(origin)?;669            let mut target_collection = Self::get_collection(collection_id)?;670            Self::check_owner_permissions(&target_collection, sender)?;671            target_collection.owner = new_owner;672            Self::save_collection(target_collection);673674            Ok(())675        }676677        /// Adds an admin of the Collection.678        /// 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. 679        /// 680        /// # Permissions681        /// 682        /// * Collection Owner.683        /// * Collection Admin.684        /// 685        /// # Arguments686        /// 687        /// * collection_id: ID of the Collection to add admin for.688        /// 689        /// * new_admin_id: Address of new admin to add.690        #[weight = <T as Config>::WeightInfo::add_collection_admin()]691        #[transactional]692        pub fn add_collection_admin(origin, collection_id: CollectionId, new_admin_id: T::AccountId) -> DispatchResult {693694            let sender = ensure_signed(origin)?;695            let collection = Self::get_collection(collection_id)?;696            Self::check_owner_or_admin_permissions(&collection, sender)?;697            let mut admin_arr = <AdminList<T>>::get(collection_id);698699            match admin_arr.binary_search(&new_admin_id) {700                Ok(_) => {},701                Err(idx) => {702                    let limits = ChainLimit::get();703                    ensure!(admin_arr.len() < limits.collections_admins_limit as usize, Error::<T>::CollectionAdminsLimitExceeded);704                    admin_arr.insert(idx, new_admin_id);705                    <AdminList<T>>::insert(collection_id, admin_arr);706                }707            }708            Ok(())709        }710711        /// 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.712        ///713        /// # Permissions714        /// 715        /// * Collection Owner.716        /// * Collection Admin.717        /// 718        /// # Arguments719        /// 720        /// * collection_id: ID of the Collection to remove admin for.721        /// 722        /// * account_id: Address of admin to remove.723        #[weight = <T as Config>::WeightInfo::remove_collection_admin()]724        #[transactional]725        pub fn remove_collection_admin(origin, collection_id: CollectionId, account_id: T::AccountId) -> DispatchResult {726727            let sender = ensure_signed(origin)?;728            let collection = Self::get_collection(collection_id)?;729            Self::check_owner_or_admin_permissions(&collection, sender)?;730            let mut admin_arr = <AdminList<T>>::get(collection_id);731732            match admin_arr.binary_search(&account_id) {733                Ok(idx) => {734                    admin_arr.remove(idx);735                    <AdminList<T>>::insert(collection_id, admin_arr);736                },737                Err(_) => {}738            }739            Ok(())740        }741742        /// # Permissions743        /// 744        /// * Collection Owner745        /// 746        /// # Arguments747        /// 748        /// * collection_id.749        /// 750        /// * new_sponsor.751        #[weight = <T as Config>::WeightInfo::set_collection_sponsor()]752        #[transactional]753        pub fn set_collection_sponsor(origin, collection_id: CollectionId, new_sponsor: T::AccountId) -> DispatchResult {754755            let sender = ensure_signed(origin)?;756            let mut target_collection = Self::get_collection(collection_id)?;757            Self::check_owner_permissions(&target_collection, sender)?;758759            target_collection.sponsorship = SponsorshipState::Unconfirmed(new_sponsor);760            Self::save_collection(target_collection);761762            Ok(())763        }764765        /// # Permissions766        /// 767        /// * Sponsor.768        /// 769        /// # Arguments770        /// 771        /// * collection_id.772        #[weight = <T as Config>::WeightInfo::confirm_sponsorship()]773        #[transactional]774        pub fn confirm_sponsorship(origin, collection_id: CollectionId) -> DispatchResult {775776            let sender = ensure_signed(origin)?;777778            let mut target_collection = Self::get_collection(collection_id)?;779            ensure!(780                target_collection.sponsorship.pending_sponsor() == Some(&sender),781                Error::<T>::ConfirmUnsetSponsorFail782            );783784            target_collection.sponsorship = SponsorshipState::Confirmed(sender);785            Self::save_collection(target_collection);786787            Ok(())788        }789790        /// Switch back to pay-per-own-transaction model.791        ///792        /// # Permissions793        ///794        /// * Collection owner.795        /// 796        /// # Arguments797        /// 798        /// * collection_id.799        #[weight = <T as Config>::WeightInfo::remove_collection_sponsor()]800        #[transactional]801        pub fn remove_collection_sponsor(origin, collection_id: CollectionId) -> DispatchResult {802803            let sender = ensure_signed(origin)?;804805            let mut target_collection = Self::get_collection(collection_id)?;806            Self::check_owner_permissions(&target_collection, sender)?;807808            target_collection.sponsorship = SponsorshipState::Disabled;809            Self::save_collection(target_collection);810811            Ok(())812        }813814        /// This method creates a concrete instance of NFT Collection created with CreateCollection method.815        /// 816        /// # Permissions817        /// 818        /// * Collection Owner.819        /// * Collection Admin.820        /// * Anyone if821        ///     * White List is enabled, and822        ///     * Address is added to white list, and823        ///     * MintPermission is enabled (see SetMintPermission method)824        /// 825        /// # Arguments826        /// 827        /// * collection_id: ID of the collection.828        /// 829        /// * owner: Address, initial owner of the NFT.830        ///831        /// * data: Token data to store on chain.832        // #[weight =833        // (130_000_000 as Weight)834        // .saturating_add((2135 as Weight).saturating_mul((properties.len() as u64) as Weight))835        // .saturating_add(RocksDbWeight::get().reads(10 as Weight))836        // .saturating_add(RocksDbWeight::get().writes(8 as Weight))]837838        #[weight = <T as Config>::WeightInfo::create_item(data.len())]839        #[transactional]840        pub fn create_item(origin, collection_id: CollectionId, owner: T::AccountId, data: CreateItemData) -> DispatchResult {841            let sender = ensure_signed(origin)?;842            Self::create_item_internal(sender, collection_id, owner, data)843        }844845        /// This method creates multiple items in a collection created with CreateCollection method.846        /// 847        /// # Permissions848        /// 849        /// * Collection Owner.850        /// * Collection Admin.851        /// * Anyone if852        ///     * White List is enabled, and853        ///     * Address is added to white list, and854        ///     * MintPermission is enabled (see SetMintPermission method)855        /// 856        /// # Arguments857        /// 858        /// * collection_id: ID of the collection.859        /// 860        /// * itemsData: Array items properties. Each property is an array of bytes itself, see [create_item].861        /// 862        /// * owner: Address, initial owner of the NFT.863        #[weight = <T as Config>::WeightInfo::create_item(items_data.into_iter()864                               .map(|data| { data.len() })865                               .sum())]866        #[transactional]867        pub fn create_multiple_items(origin, collection_id: CollectionId, owner: T::AccountId, items_data: Vec<CreateItemData>) -> DispatchResult {868869            ensure!(items_data.len() > 0, Error::<T>::EmptyArgument);870            let sender = ensure_signed(origin)?;871872            let target_collection = Self::get_collection(collection_id)?;873874            Self::can_create_items_in_collection(&target_collection, &sender, &owner, items_data.len() as u32)?;875876            for data in &items_data {877                Self::validate_create_item_args(&target_collection, data)?;878            }879            for data in &items_data {880                Self::create_item_no_validation(&target_collection, owner.clone(), data.clone())?;881            }882883            Ok(())884        }885886        /// Destroys a concrete instance of NFT.887        /// 888        /// # Permissions889        /// 890        /// * Collection Owner.891        /// * Collection Admin.892        /// * Current NFT Owner.893        /// 894        /// # Arguments895        /// 896        /// * collection_id: ID of the collection.897        /// 898        /// * item_id: ID of NFT to burn.899        #[weight = <T as Config>::WeightInfo::burn_item()]900        #[transactional]901        pub fn burn_item(origin, collection_id: CollectionId, item_id: TokenId, value: u128) -> DispatchResult {902903            let sender = ensure_signed(origin)?;904905            // Transfer permissions check906            let target_collection = Self::get_collection(collection_id)?;907            ensure!(908                Self::is_item_owner(sender.clone(), &target_collection, item_id) ||909                (910                    target_collection.limits.owner_can_transfer &&911                    Self::is_owner_or_admin_permissions(&target_collection, sender.clone())912                ),913                Error::<T>::NoPermission914            );915916            if target_collection.access == AccessMode::WhiteList {917                Self::check_white_list(&target_collection, &sender)?;918            }919920            match target_collection.mode921            {922                CollectionMode::NFT => Self::burn_nft_item(&target_collection, item_id)?,923                CollectionMode::Fungible(_)  => Self::burn_fungible_item(&sender, &target_collection, value)?,924                CollectionMode::ReFungible  => Self::burn_refungible_item(&target_collection, item_id, &sender)?,925                _ => ()926            };927928            // call event929            Self::deposit_event(RawEvent::ItemDestroyed(target_collection.id, item_id));930931            Ok(())932        }933934        /// Change ownership of the token.935        /// 936        /// # Permissions937        /// 938        /// * Collection Owner939        /// * Collection Admin940        /// * Current NFT owner941        ///942        /// # Arguments943        /// 944        /// * recipient: Address of token recipient.945        /// 946        /// * collection_id.947        /// 948        /// * item_id: ID of the item949        ///     * Non-Fungible Mode: Required.950        ///     * Fungible Mode: Ignored.951        ///     * Re-Fungible Mode: Required.952        /// 953        /// * value: Amount to transfer.954        ///     * Non-Fungible Mode: Ignored955        ///     * Fungible Mode: Must specify transferred amount956        ///     * Re-Fungible Mode: Must specify transferred portion (between 0 and 1)957        #[weight = <T as Config>::WeightInfo::transfer()]958        #[transactional]959        pub fn transfer(origin, recipient: T::AccountId, collection_id: CollectionId, item_id: TokenId, value: u128) -> DispatchResult {960            let sender = ensure_signed(origin)?;961            let collection = Self::get_collection(collection_id)?;962963            Self::transfer_internal(sender, recipient, &collection, item_id, value)964        }965966        /// Set, change, or remove approved address to transfer the ownership of the NFT.967        /// 968        /// # Permissions969        /// 970        /// * Collection Owner971        /// * Collection Admin972        /// * Current NFT owner973        /// 974        /// # Arguments975        /// 976        /// * approved: Address that is approved to transfer this NFT or zero (if needed to remove approval).977        /// 978        /// * collection_id.979        /// 980        /// * item_id: ID of the item.981        #[weight = <T as Config>::WeightInfo::approve()]982        #[transactional]983        pub fn approve(origin, spender: T::AccountId, collection_id: CollectionId, item_id: TokenId, amount: u128) -> DispatchResult {984985            let sender = ensure_signed(origin)?;986            let target_collection = Self::get_collection(collection_id)?;987988            Self::token_exists(&target_collection, item_id)?;989990            // Transfer permissions check991            let bypasses_limits = target_collection.limits.owner_can_transfer &&992                Self::is_owner_or_admin_permissions(993                    &target_collection,994                    sender.clone(),995                );996997            let allowance_limit = if bypasses_limits {998                None999            } else if let Some(amount) = Self::owned_amount(1000                sender.clone(),1001                &target_collection,1002                item_id,1003            ) {1004                Some(amount)1005            } else {1006                fail!(Error::<T>::NoPermission);1007            };10081009            if target_collection.access == AccessMode::WhiteList {1010                Self::check_white_list(&target_collection, &sender)?;1011                Self::check_white_list(&target_collection, &spender)?;1012            }10131014            let allowance: u128 = amount1015                .checked_add(<Allowances<T>>::get(collection_id, (item_id, &sender, &spender)))1016                .ok_or(Error::<T>::NumOverflow)?;1017            if let Some(limit) = allowance_limit {1018                ensure!(limit >= allowance, Error::<T>::TokenValueTooLow);1019            }1020            <Allowances<T>>::insert(collection_id, (item_id, sender.clone(), spender.clone()), allowance);10211022            Self::deposit_event(RawEvent::Approved(target_collection.id, item_id, sender, spender, allowance));1023            Ok(())1024        }1025        1026        /// 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.1027        /// 1028        /// # Permissions1029        /// * Collection Owner1030        /// * Collection Admin1031        /// * Current NFT owner1032        /// * Address approved by current NFT owner1033        /// 1034        /// # Arguments1035        /// 1036        /// * from: Address that owns token.1037        /// 1038        /// * recipient: Address of token recipient.1039        /// 1040        /// * collection_id.1041        /// 1042        /// * item_id: ID of the item.1043        /// 1044        /// * value: Amount to transfer.1045        #[weight = <T as Config>::WeightInfo::transfer_from()]1046        #[transactional]1047        pub fn transfer_from(origin, from: T::AccountId, recipient: T::AccountId, collection_id: CollectionId, item_id: TokenId, value: u128 ) -> DispatchResult {10481049            let sender = ensure_signed(origin)?;1050            let target_collection = Self::get_collection(collection_id)?;10511052            // Check approval1053            let approval: u128 = <Allowances<T>>::get(collection_id, (item_id, &from, &sender));10541055            // Limits check1056            Self::is_correct_transfer(&target_collection, &recipient)?;10571058            // Transfer permissions check         1059            ensure!(1060                approval >= value || 1061                (1062                    target_collection.limits.owner_can_transfer &&1063                    Self::is_owner_or_admin_permissions(&target_collection, sender.clone())1064                ),1065                Error::<T>::NoPermission1066            );10671068            if target_collection.access == AccessMode::WhiteList {1069                Self::check_white_list(&target_collection, &sender)?;1070                Self::check_white_list(&target_collection, &recipient)?;1071            }10721073            // Reduce approval by transferred amount or remove if remaining approval drops to 01074            if approval.saturating_sub(value) > 0 {1075                <Allowances<T>>::insert(collection_id, (item_id, &from, &sender), approval - value);1076            }1077            else {1078                <Allowances<T>>::remove(collection_id, (item_id, &from, &sender));1079            }10801081            match target_collection.mode1082            {1083                CollectionMode::NFT => Self::transfer_nft(&target_collection, item_id, from.clone(), recipient.clone())?,1084                CollectionMode::Fungible(_)  => Self::transfer_fungible(&target_collection, value, &from, &recipient)?,1085                CollectionMode::ReFungible  => Self::transfer_refungible(&target_collection, item_id, value, from.clone(), recipient.clone())?,1086                _ => ()1087            };10881089            Self::deposit_event(RawEvent::Transfer(target_collection.id, item_id, from, recipient, value));1090            Ok(())1091        }10921093        // #[weight = 0]1094        // pub fn safe_transfer_from(origin, collection_id: CollectionId, item_id: TokenId, new_owner: T::AccountId) -> DispatchResult {10951096        //     // let no_perm_mes = "You do not have permissions to modify this collection";1097        //     // ensure!(<ApprovedList<T>>::contains_key((collection_id, item_id)), no_perm_mes);1098        //     // let list_itm = <ApprovedList<T>>::get((collection_id, item_id));1099        //     // ensure!(list_itm.contains(&new_owner.clone()), no_perm_mes);11001101        //     // // on_nft_received  call11021103        //     // Self::transfer(origin, collection_id, item_id, new_owner)?;11041105        //     Ok(())1106        // }11071108        /// Set off-chain data schema.1109        /// 1110        /// # Permissions1111        /// 1112        /// * Collection Owner1113        /// * Collection Admin1114        /// 1115        /// # Arguments1116        /// 1117        /// * collection_id.1118        /// 1119        /// * schema: String representing the offchain data schema.1120        #[weight = <T as Config>::WeightInfo::set_variable_meta_data()]1121        #[transactional]1122        pub fn set_variable_meta_data (1123            origin,1124            collection_id: CollectionId,1125            item_id: TokenId,1126            data: Vec<u8>1127        ) -> DispatchResult {1128            let sender = ensure_signed(origin)?;1129            1130            let target_collection = Self::get_collection(collection_id)?;1131            Self::token_exists(&target_collection, item_id)?;11321133            ensure!(ChainLimit::get().custom_data_limit >= data.len() as u32, Error::<T>::TokenVariableDataLimitExceeded);11341135            // Modify permissions check1136            ensure!(Self::is_item_owner(sender.clone(), &target_collection, item_id) ||1137                Self::is_owner_or_admin_permissions(&target_collection, sender.clone()),1138                Error::<T>::NoPermission);11391140            match target_collection.mode1141            {1142                CollectionMode::NFT => Self::set_nft_variable_data(&target_collection, item_id, data)?,1143                CollectionMode::ReFungible  => Self::set_re_fungible_variable_data(&target_collection, item_id, data)?,1144                CollectionMode::Fungible(_) => fail!(Error::<T>::CantStoreMetadataInFungibleTokens),1145                _ => fail!(Error::<T>::UnexpectedCollectionType)1146            };11471148            Ok(())1149        }1150 1151        /// Set schema standard1152        /// ImageURL1153        /// Unique1154        /// 1155        /// # Permissions1156        /// 1157        /// * Collection Owner1158        /// * Collection Admin1159        /// 1160        /// # Arguments1161        /// 1162        /// * collection_id.1163        /// 1164        /// * schema: SchemaVersion: enum1165        #[weight = <T as Config>::WeightInfo::set_schema_version()]1166        #[transactional]1167        pub fn set_schema_version(1168            origin,1169            collection_id: CollectionId,1170            version: SchemaVersion1171        ) -> DispatchResult {1172            let sender = ensure_signed(origin)?;1173            let mut target_collection = Self::get_collection(collection_id)?;1174            Self::check_owner_or_admin_permissions(&target_collection, sender.clone())?;1175            target_collection.schema_version = version;1176            Self::save_collection(target_collection);11771178            Ok(())1179        }11801181        /// Set off-chain data schema.1182        /// 1183        /// # Permissions1184        /// 1185        /// * Collection Owner1186        /// * Collection Admin1187        /// 1188        /// # Arguments1189        /// 1190        /// * collection_id.1191        /// 1192        /// * schema: String representing the offchain data schema.1193        #[weight = <T as Config>::WeightInfo::set_offchain_schema()]1194        #[transactional]1195        pub fn set_offchain_schema(1196            origin,1197            collection_id: CollectionId,1198            schema: Vec<u8>1199        ) -> DispatchResult {1200            let sender = ensure_signed(origin)?;1201            let mut target_collection = Self::get_collection(collection_id)?;1202            Self::check_owner_or_admin_permissions(&target_collection, sender.clone())?;12031204            // check schema limit1205            ensure!(schema.len() as u32 <= ChainLimit::get().offchain_schema_limit, "");12061207            target_collection.offchain_schema = schema;1208            Self::save_collection(target_collection);12091210            Ok(())1211        }12121213        /// Set const on-chain data schema.1214        /// 1215        /// # Permissions1216        /// 1217        /// * Collection Owner1218        /// * Collection Admin1219        /// 1220        /// # Arguments1221        /// 1222        /// * collection_id.1223        /// 1224        /// * schema: String representing the const on-chain data schema.1225        #[weight = <T as Config>::WeightInfo::set_const_on_chain_schema()]1226        #[transactional]1227        pub fn set_const_on_chain_schema (1228            origin,1229            collection_id: CollectionId,1230            schema: Vec<u8>1231        ) -> DispatchResult {1232            let sender = ensure_signed(origin)?;1233            let mut target_collection = Self::get_collection(collection_id)?;1234            Self::check_owner_or_admin_permissions(&target_collection, sender.clone())?;12351236            // check schema limit1237            ensure!(schema.len() as u32 <= ChainLimit::get().const_on_chain_schema_limit, "");12381239            target_collection.const_on_chain_schema = schema;1240            Self::save_collection(target_collection);12411242            Ok(())1243        }12441245        /// Set variable on-chain data schema.1246        /// 1247        /// # Permissions1248        /// 1249        /// * Collection Owner1250        /// * Collection Admin1251        /// 1252        /// # Arguments1253        /// 1254        /// * collection_id.1255        /// 1256        /// * schema: String representing the variable on-chain data schema.1257        #[weight = <T as Config>::WeightInfo::set_const_on_chain_schema()]1258        #[transactional]1259        pub fn set_variable_on_chain_schema (1260            origin,1261            collection_id: CollectionId,1262            schema: Vec<u8>1263        ) -> DispatchResult {1264            let sender = ensure_signed(origin)?;1265            let mut target_collection = Self::get_collection(collection_id)?;1266            Self::check_owner_or_admin_permissions(&target_collection, sender.clone())?;12671268            // check schema limit1269            ensure!(schema.len() as u32 <= ChainLimit::get().variable_on_chain_schema_limit, "");12701271            target_collection.variable_on_chain_schema = schema;1272            Self::save_collection(target_collection);12731274            Ok(())1275        }12761277        // Sudo permissions function1278        #[weight = <T as Config>::WeightInfo::set_chain_limits()]1279        #[transactional]1280        pub fn set_chain_limits(1281            origin,1282            limits: ChainLimits1283        ) -> DispatchResult {12841285            #[cfg(not(feature = "runtime-benchmarks"))]1286            ensure_root(origin)?;12871288            <ChainLimit>::put(limits);1289            Ok(())1290        }12911292        /// Enable smart contract self-sponsoring.1293        /// 1294        /// # Permissions1295        /// 1296        /// * Contract Owner1297        /// 1298        /// # Arguments1299        /// 1300        /// * contract address1301        /// * enable flag1302        /// 1303        #[weight = <T as Config>::WeightInfo::enable_contract_sponsoring()]1304        #[transactional]1305        pub fn enable_contract_sponsoring(1306            origin,1307            contract_address: T::AccountId,1308            enable: bool1309        ) -> DispatchResult {13101311            let sender = ensure_signed(origin)?;13121313            #[cfg(feature = "runtime-benchmarks")]1314            <ContractOwner<T>>::insert(contract_address.clone(), sender.clone());13151316            Self::ensure_contract_owned(sender, &contract_address)?;13171318            <ContractSelfSponsoring<T>>::insert(contract_address, enable);1319            Ok(())1320        }13211322        /// Set the rate limit for contract sponsoring to specified number of blocks.1323        /// 1324        /// If not set (has the default value of 0 blocks), the sponsoring will be disabled. 1325        /// If set to the number B (for blocks), the transactions will be sponsored with a rate 1326        /// limit of B, i.e. fees for every transaction sent to this smart contract will be paid 1327        /// from contract endowment if there are at least B blocks between such transactions. 1328        /// Nonetheless, if transactions are sent more frequently, the fees are paid by the sender.1329        /// 1330        /// # Permissions1331        /// 1332        /// * Contract Owner1333        /// 1334        /// # Arguments1335        /// 1336        /// -`contract_address`: Address of the contract to sponsor1337        /// -`rate_limit`: Number of blocks to wait until the next sponsored transaction is allowed1338        /// 1339        #[weight = <T as Config>::WeightInfo::set_contract_sponsoring_rate_limit()]1340        #[transactional]1341        pub fn set_contract_sponsoring_rate_limit(1342            origin,1343            contract_address: T::AccountId,1344            rate_limit: T::BlockNumber1345        ) -> DispatchResult {1346            let sender = ensure_signed(origin)?;13471348            #[cfg(feature = "runtime-benchmarks")]1349            <ContractOwner<T>>::insert(contract_address.clone(), sender.clone());13501351            Self::ensure_contract_owned(sender, &contract_address)?;1352            <ContractSponsoringRateLimit<T>>::insert(contract_address, rate_limit);1353            Ok(())1354        }13551356        /// Enable the white list for a contract. Only addresses added to the white list with addToContractWhiteList will be able to call this smart contract.1357        /// 1358        /// # Permissions1359        /// 1360        /// * Address that deployed smart contract.1361        /// 1362        /// # Arguments1363        /// 1364        /// -`contract_address`: Address of the contract.1365        /// 1366        /// - `enable`: .  1367        #[weight = <T as Config>::WeightInfo::toggle_contract_white_list()]1368        #[transactional]1369        pub fn toggle_contract_white_list(1370            origin,1371            contract_address: T::AccountId,1372            enable: bool1373        ) -> DispatchResult {1374            let sender = ensure_signed(origin)?;13751376            #[cfg(feature = "runtime-benchmarks")]1377            <ContractOwner<T>>::insert(contract_address.clone(), sender.clone());13781379            Self::ensure_contract_owned(sender, &contract_address)?;1380            if enable {1381                <ContractWhiteListEnabled<T>>::insert(contract_address, true);1382            } else {1383                <ContractWhiteListEnabled<T>>::remove(contract_address);1384            }1385            Ok(())1386        }1387        1388        /// Add an address to smart contract white list.1389        /// 1390        /// # Permissions1391        /// 1392        /// * Address that deployed smart contract.1393        /// 1394        /// # Arguments1395        /// 1396        /// -`contract_address`: Address of the contract.1397        ///1398        /// -`account_address`: Address to add.1399        #[weight = <T as Config>::WeightInfo::add_to_contract_white_list()]1400        #[transactional]1401        pub fn add_to_contract_white_list(1402            origin,1403            contract_address: T::AccountId,1404            account_address: T::AccountId1405        ) -> DispatchResult {1406            let sender = ensure_signed(origin)?;14071408            #[cfg(feature = "runtime-benchmarks")]1409            <ContractOwner<T>>::insert(contract_address.clone(), sender.clone());1410            1411            Self::ensure_contract_owned(sender, &contract_address)?;      1412            <ContractWhiteList<T>>::insert(contract_address, account_address, true);1413            Ok(())1414        }14151416        /// Remove an address from smart contract white list.1417        /// 1418        /// # Permissions1419        /// 1420        /// * Address that deployed smart contract.1421        /// 1422        /// # Arguments1423        /// 1424        /// -`contract_address`: Address of the contract.1425        ///1426        /// -`account_address`: Address to remove.1427        #[weight = <T as Config>::WeightInfo::remove_from_contract_white_list()]1428        #[transactional]1429        pub fn remove_from_contract_white_list(1430            origin,1431            contract_address: T::AccountId,1432            account_address: T::AccountId1433        ) -> DispatchResult {1434            let sender = ensure_signed(origin)?;14351436            #[cfg(feature = "runtime-benchmarks")]1437            <ContractOwner<T>>::insert(contract_address.clone(), sender.clone());14381439            Self::ensure_contract_owned(sender, &contract_address)?;1440            <ContractWhiteList<T>>::remove(contract_address, account_address);1441            Ok(())1442        }14431444        #[weight = <T as Config>::WeightInfo::set_collection_limits()]1445        #[transactional]1446        pub fn set_collection_limits(1447            origin,1448            collection_id: u32,1449            new_limits: CollectionLimits<T::BlockNumber>,1450        ) -> DispatchResult {1451            let sender = ensure_signed(origin)?;1452            let mut target_collection = Self::get_collection(collection_id)?;1453            Self::check_owner_permissions(&target_collection, sender.clone())?;1454            let old_limits = &target_collection.limits;1455            let chain_limits = ChainLimit::get();14561457            // collection bounds1458            ensure!(new_limits.sponsor_transfer_timeout <= MAX_SPONSOR_TIMEOUT &&1459                new_limits.account_token_ownership_limit <= MAX_TOKEN_OWNERSHIP && 1460                new_limits.sponsored_data_size <= chain_limits.custom_data_limit,1461                Error::<T>::CollectionLimitBoundsExceeded);14621463            // token_limit   check  prev1464            ensure!(old_limits.token_limit >= new_limits.token_limit, Error::<T>::CollectionTokenLimitExceeded);1465            ensure!(new_limits.token_limit > 0, Error::<T>::CollectionTokenLimitExceeded);14661467            ensure!(1468                (old_limits.owner_can_transfer || !new_limits.owner_can_transfer) &&1469                (old_limits.owner_can_destroy || !new_limits.owner_can_destroy),1470                Error::<T>::OwnerPermissionsCantBeReverted,1471            );14721473            target_collection.limits = new_limits;1474            Self::save_collection(target_collection);14751476            Ok(())1477        } 1478    }1479}14801481impl<T: Config> Module<T> {1482    pub fn create_item_internal(sender: T::AccountId, collection_id: CollectionId, owner: T::AccountId, data: CreateItemData) -> DispatchResult {1483        let target_collection = Self::get_collection(collection_id)?;14841485        Self::can_create_items_in_collection(&target_collection, &sender, &owner, 1)?;1486        Self::validate_create_item_args(&target_collection, &data)?;1487        Self::create_item_no_validation(&target_collection, owner, data)?;14881489        Ok(())1490    }14911492    pub fn transfer_internal(sender: T::AccountId, recipient: T::AccountId, target_collection: &CollectionHandle<T>, item_id: TokenId, value: u128) -> DispatchResult {1493        // Limits check1494        Self::is_correct_transfer(target_collection, &recipient)?;14951496        // Transfer permissions check1497        ensure!(Self::is_item_owner(sender.clone(), target_collection, item_id) ||1498            Self::is_owner_or_admin_permissions(target_collection, sender.clone()),1499            Error::<T>::NoPermission);15001501        if target_collection.access == AccessMode::WhiteList {1502            Self::check_white_list(target_collection, &sender)?;1503            Self::check_white_list(target_collection, &recipient)?;1504        }15051506        match target_collection.mode1507        {1508            CollectionMode::NFT => Self::transfer_nft(target_collection, item_id, sender.clone(), recipient.clone())?,1509            CollectionMode::Fungible(_)  => Self::transfer_fungible(target_collection, value, &sender, &recipient)?,1510            CollectionMode::ReFungible  => Self::transfer_refungible(target_collection, item_id, value, sender.clone(), recipient.clone())?,1511            _ => ()1512        };15131514        Self::deposit_event(RawEvent::Transfer(target_collection.id, item_id, sender, recipient, value));15151516        Ok(())1517    }151815191520    fn is_correct_transfer(collection: &CollectionHandle<T>, recipient: &T::AccountId) -> DispatchResult {1521        let collection_id = collection.id;15221523        // check token limit and account token limit1524        let account_items: u32 = <AddressTokens<T>>::get(collection_id, recipient).len() as u32;1525        ensure!(collection.limits.account_token_ownership_limit > account_items,  Error::<T>::AccountTokenLimitExceeded);1526        1527        Ok(())1528    }15291530    fn can_create_items_in_collection(collection: &CollectionHandle<T>, sender: &T::AccountId, owner: &T::AccountId, amount: u32) -> DispatchResult {1531        let collection_id = collection.id;15321533        // check token limit and account token limit1534        let total_items: u32 = ItemListIndex::get(collection_id)1535            .checked_add(amount)1536            .ok_or(Error::<T>::CollectionTokenLimitExceeded)?;1537        let account_items: u32 = (<AddressTokens<T>>::get(collection_id, owner).len() as u32)1538            .checked_add(amount)1539            .ok_or(Error::<T>::AccountTokenLimitExceeded)?;1540        ensure!(collection.limits.token_limit >= total_items,  Error::<T>::CollectionTokenLimitExceeded);1541        ensure!(collection.limits.account_token_ownership_limit >= account_items,  Error::<T>::AccountTokenLimitExceeded);15421543        if !Self::is_owner_or_admin_permissions(collection, sender.clone()) {1544            ensure!(collection.mint_mode == true, Error::<T>::PublicMintingNotAllowed);1545            Self::check_white_list(collection, owner)?;1546            Self::check_white_list(collection, sender)?;1547        }15481549        Ok(())1550    }15511552    fn validate_create_item_args(target_collection: &CollectionHandle<T>, data: &CreateItemData) -> DispatchResult {1553        match target_collection.mode1554        {1555            CollectionMode::NFT => {1556                if let CreateItemData::NFT(data) = data {1557                    // check sizes1558                    ensure!(ChainLimit::get().custom_data_limit >= data.const_data.len() as u32, Error::<T>::TokenConstDataLimitExceeded);1559                    ensure!(ChainLimit::get().custom_data_limit >= data.variable_data.len() as u32, Error::<T>::TokenVariableDataLimitExceeded);1560                } else {1561                    fail!(Error::<T>::NotNftDataUsedToMintNftCollectionToken);1562                }1563            },1564            CollectionMode::Fungible(_) => {1565                if let CreateItemData::Fungible(_) = data {1566                } else {1567                    fail!(Error::<T>::NotFungibleDataUsedToMintFungibleCollectionToken);1568                }1569            },1570            CollectionMode::ReFungible => {1571                if let CreateItemData::ReFungible(data) = data {15721573                    // check sizes1574                    ensure!(ChainLimit::get().custom_data_limit >= data.const_data.len() as u32, Error::<T>::TokenConstDataLimitExceeded);1575                    ensure!(ChainLimit::get().custom_data_limit >= data.variable_data.len() as u32, Error::<T>::TokenVariableDataLimitExceeded);15761577                    // Check refungibility limits1578                    ensure!(data.pieces <= MAX_REFUNGIBLE_PIECES, Error::<T>::WrongRefungiblePieces);1579                    ensure!(data.pieces > 0, Error::<T>::WrongRefungiblePieces);1580                } else {1581                    fail!(Error::<T>::NotReFungibleDataUsedToMintReFungibleCollectionToken);1582                }1583            },1584            _ => { fail!(Error::<T>::UnexpectedCollectionType); }1585        };15861587        Ok(())1588    }15891590    fn create_item_no_validation(collection: &CollectionHandle<T>, owner: T::AccountId, data: CreateItemData) -> DispatchResult {1591        match data1592        {1593            CreateItemData::NFT(data) => {1594                let item = NftItemType {1595                    owner: owner.clone(),1596                    const_data: data.const_data,1597                    variable_data: data.variable_data1598                };15991600                Self::add_nft_item(collection, item)?;1601            },1602            CreateItemData::Fungible(data) => {1603                Self::add_fungible_item(collection, &owner, data.value)?;1604            },1605            CreateItemData::ReFungible(data) => {1606                let mut owner_list = Vec::new();1607                owner_list.push(Ownership {owner: owner.clone(), fraction: data.pieces});16081609                let item = ReFungibleItemType {1610                    owner: owner_list,1611                    const_data: data.const_data,1612                    variable_data: data.variable_data1613                };16141615                Self::add_refungible_item(collection, item)?;1616            }1617        };16181619        Ok(())1620    }16211622    fn add_fungible_item(collection: &CollectionHandle<T>, owner: &T::AccountId, value: u128) -> DispatchResult {1623        let collection_id = collection.id;16241625        // Does new owner already have an account?1626        let balance: u128 = <FungibleItemList<T>>::get(collection_id, owner).value;16271628        // Mint 1629        let item = FungibleItemType {1630            value: balance.checked_add(value).ok_or(Error::<T>::NumOverflow)?,1631        };1632        <FungibleItemList<T>>::insert(collection_id, (*owner).clone(), item);16331634        // Update balance1635        let new_balance = <Balance<T>>::get(collection_id, owner)1636            .checked_add(value)1637            .ok_or(Error::<T>::NumOverflow)?;1638        <Balance<T>>::insert(collection_id, (*owner).clone(), new_balance);16391640        Self::deposit_event(RawEvent::ItemCreated(collection_id, 0, owner.clone()));1641        Ok(())1642    }16431644    fn add_refungible_item(collection: &CollectionHandle<T>, item: ReFungibleItemType<T::AccountId>) -> DispatchResult {1645        let collection_id = collection.id;16461647        let current_index = <ItemListIndex>::get(collection_id)1648            .checked_add(1)1649            .ok_or(Error::<T>::NumOverflow)?;1650        let itemcopy = item.clone();16511652        ensure!(1653            item.owner.len() == 1,1654            Error::<T>::BadCreateRefungibleCall,1655        );1656        let item_owner = item.owner.first().expect("only one owner is defined");16571658        let value = item_owner.fraction;1659        let owner = item_owner.owner.clone();16601661        Self::add_token_index(collection_id, current_index, &owner)?;16621663        <ItemListIndex>::insert(collection_id, current_index);1664        <ReFungibleItemList<T>>::insert(collection_id, current_index, itemcopy);16651666        // Update balance1667        let new_balance = <Balance<T>>::get(collection_id, &owner)1668            .checked_add(value)1669            .ok_or(Error::<T>::NumOverflow)?;1670        <Balance<T>>::insert(collection_id, owner.clone(), new_balance);16711672        Self::deposit_event(RawEvent::ItemCreated(collection_id, current_index, owner));1673        Ok(())1674    }16751676    fn add_nft_item(collection: &CollectionHandle<T>, item: NftItemType<T::AccountId>) -> DispatchResult {1677        let collection_id = collection.id;16781679        let current_index = <ItemListIndex>::get(collection_id)1680            .checked_add(1)1681            .ok_or(Error::<T>::NumOverflow)?;16821683        let item_owner = item.owner.clone();1684        Self::add_token_index(collection_id, current_index, &item.owner)?;16851686        <ItemListIndex>::insert(collection_id, current_index);1687        <NftItemList<T>>::insert(collection_id, current_index, item);16881689        // Update balance1690        let new_balance = <Balance<T>>::get(collection_id, item_owner.clone())1691            .checked_add(1)1692            .ok_or(Error::<T>::NumOverflow)?;1693        <Balance<T>>::insert(collection_id, item_owner.clone(), new_balance);16941695        Self::deposit_event(RawEvent::ItemCreated(collection_id, current_index, item_owner));1696        Ok(())1697    }16981699    fn burn_refungible_item(1700        collection: &CollectionHandle<T>,1701        item_id: TokenId,1702        owner: &T::AccountId,1703    ) -> DispatchResult {1704        let collection_id = collection.id;17051706        let mut token = <ReFungibleItemList<T>>::get(collection_id, item_id)1707            .ok_or(Error::<T>::TokenNotFound)?;1708        let rft_balance = token1709            .owner1710            .iter()1711            .find(|&i| i.owner == *owner)1712            .ok_or(Error::<T>::TokenNotFound)?;1713        Self::remove_token_index(collection_id, item_id, owner)?;17141715        // update balance1716        let new_balance = <Balance<T>>::get(collection_id, rft_balance.owner.clone())1717            .checked_sub(rft_balance.fraction)1718            .ok_or(Error::<T>::NumOverflow)?;1719        <Balance<T>>::insert(collection_id, rft_balance.owner.clone(), new_balance);17201721        // Re-create owners list with sender removed1722        let index = token1723            .owner1724            .iter()1725            .position(|i| i.owner == *owner)1726            .expect("owned item is exists");1727        token.owner.remove(index);1728        let owner_count = token.owner.len();17291730        // Burn the token completely if this was the last (only) owner1731        if owner_count == 0 {1732            <ReFungibleItemList<T>>::remove(collection_id, item_id);1733            <VariableMetaDataBasket<T>>::remove(collection_id, item_id);1734        }1735        else {1736            <ReFungibleItemList<T>>::insert(collection_id, item_id, token);1737        }17381739        Ok(())1740    }17411742    fn burn_nft_item(collection: &CollectionHandle<T>, item_id: TokenId) -> DispatchResult {1743        let collection_id = collection.id;17441745        let item = <NftItemList<T>>::get(collection_id, item_id)1746            .ok_or(Error::<T>::TokenNotFound)?;1747        Self::remove_token_index(collection_id, item_id, &item.owner)?;17481749        // update balance1750        let new_balance = <Balance<T>>::get(collection_id, &item.owner)1751            .checked_sub(1)1752            .ok_or(Error::<T>::NumOverflow)?;1753        <Balance<T>>::insert(collection_id, item.owner.clone(), new_balance);1754        <NftItemList<T>>::remove(collection_id, item_id);1755        <VariableMetaDataBasket<T>>::remove(collection_id, item_id);17561757        Ok(())1758    }17591760    fn burn_fungible_item(owner: &T::AccountId, collection: &CollectionHandle<T>, value: u128) -> DispatchResult {1761        let collection_id = collection.id;17621763        let mut balance = <FungibleItemList<T>>::get(collection_id, owner);1764        ensure!(balance.value >= value, Error::<T>::TokenValueNotEnough);17651766        // update balance1767        let new_balance = <Balance<T>>::get(collection_id, owner)1768            .checked_sub(value)1769            .ok_or(Error::<T>::NumOverflow)?;1770        <Balance<T>>::insert(collection_id, (*owner).clone(), new_balance);17711772        if balance.value - value > 0 {1773            balance.value -= value;1774            <FungibleItemList<T>>::insert(collection_id, (*owner).clone(), balance);1775        }1776        else {1777            <FungibleItemList<T>>::remove(collection_id, owner);1778        }17791780        Ok(())1781    }17821783    pub fn get_collection(collection_id: CollectionId) -> Result<CollectionHandle<T>, sp_runtime::DispatchError> {1784        Ok(<CollectionById<T>>::get(collection_id)1785            .map(|collection| CollectionHandle {1786                id: collection_id,1787                collection1788            })1789            .ok_or(Error::<T>::CollectionNotFound)?)1790    }17911792    fn save_collection(collection: CollectionHandle<T>) {1793        <CollectionById<T>>::insert(collection.id, collection.collection);1794    }17951796    fn check_owner_permissions(target_collection: &CollectionHandle<T>, subject: T::AccountId) -> DispatchResult {1797        ensure!(1798            subject == target_collection.owner,1799            Error::<T>::NoPermission1800        );18011802        Ok(())1803    }18041805    fn is_owner_or_admin_permissions(collection: &CollectionHandle<T>, subject: T::AccountId) -> bool {1806        subject == collection.owner || <AdminList<T>>::get(collection.id).contains(&subject)1807    }18081809    fn check_owner_or_admin_permissions(1810        collection: &CollectionHandle<T>,1811        subject: T::AccountId,1812    ) -> DispatchResult {1813        ensure!(Self::is_owner_or_admin_permissions(collection, subject), Error::<T>::NoPermission);18141815        Ok(())1816    }18171818    fn owned_amount(1819        subject: T::AccountId,1820        target_collection: &CollectionHandle<T>,1821        item_id: TokenId,1822    ) -> Option<u128> {1823        let collection_id = target_collection.id;18241825        match target_collection.mode {1826            CollectionMode::NFT => (<NftItemList<T>>::get(collection_id, item_id)?.owner == subject)1827                .then(|| 1),1828            CollectionMode::Fungible(_) => Some(<FungibleItemList<T>>::get(collection_id, &subject)1829                .value),1830            CollectionMode::ReFungible => <ReFungibleItemList<T>>::get(collection_id, item_id)?1831                .owner1832                .iter()1833                .find(|i| i.owner == subject)1834                .map(|i| i.fraction),1835            CollectionMode::Invalid => None,1836        }1837    }18381839    fn is_item_owner(subject: T::AccountId, target_collection: &CollectionHandle<T>, item_id: TokenId) -> bool {1840        match target_collection.mode {1841            CollectionMode::Fungible(_) => true,1842            _ => Self::owned_amount(subject, target_collection, item_id).is_some(),1843        }1844    }18451846    fn check_white_list(collection: &CollectionHandle<T>, address: &T::AccountId) -> DispatchResult {1847        let collection_id = collection.id;18481849        let mes = Error::<T>::AddresNotInWhiteList;1850        ensure!(<WhiteList<T>>::contains_key(collection_id, address), mes);18511852        Ok(())1853    }18541855    /// Check if token exists. In case of Fungible, check if there is an entry for 1856    /// the owner in fungible balances double map1857    fn token_exists(1858        target_collection: &CollectionHandle<T>,1859        item_id: TokenId,1860    ) -> DispatchResult {1861        let collection_id = target_collection.id;1862        let exists = match target_collection.mode1863        {1864            CollectionMode::NFT => <NftItemList<T>>::contains_key(collection_id, item_id),1865            CollectionMode::Fungible(_)  => true,1866            CollectionMode::ReFungible  => <ReFungibleItemList<T>>::contains_key(collection_id, item_id),1867            _ => false1868        };18691870        ensure!(exists == true, Error::<T>::TokenNotFound);1871        Ok(())1872    }18731874    fn transfer_fungible(1875        collection: &CollectionHandle<T>,1876        value: u128,1877        owner: &T::AccountId,1878        recipient: &T::AccountId,1879    ) -> DispatchResult {1880        let collection_id = collection.id;18811882        let mut balance = <FungibleItemList<T>>::get(collection_id, owner);1883        ensure!(balance.value >= value, Error::<T>::TokenValueTooLow);18841885        // Send balance to recipient (updates balanceOf of recipient)1886        Self::add_fungible_item(collection, recipient, value)?;18871888        // update balanceOf of sender1889        <Balance<T>>::insert(collection_id, (*owner).clone(), balance.value - value);18901891        // Reduce or remove sender1892        if balance.value == value {1893            <FungibleItemList<T>>::remove(collection_id, owner);1894        }1895        else {1896            balance.value -= value;1897            <FungibleItemList<T>>::insert(collection_id, (*owner).clone(), balance);1898        }18991900        Ok(())1901    }19021903    fn transfer_refungible(1904        collection: &CollectionHandle<T>,1905        item_id: TokenId,1906        value: u128,1907        owner: T::AccountId,1908        new_owner: T::AccountId,1909    ) -> DispatchResult {1910        let collection_id = collection.id;1911        let full_item = <ReFungibleItemList<T>>::get(collection_id, item_id)1912            .ok_or(Error::<T>::TokenNotFound)?;19131914        let item = full_item1915            .owner1916            .iter()1917            .filter(|i| i.owner == owner)1918            .next()1919            .ok_or(Error::<T>::TokenNotFound)?;1920        let amount = item.fraction;19211922        ensure!(amount >= value, Error::<T>::TokenValueTooLow);19231924        // update balance1925        let balance_old_owner = <Balance<T>>::get(collection_id, item.owner.clone())1926            .checked_sub(value)1927            .ok_or(Error::<T>::NumOverflow)?;1928        <Balance<T>>::insert(collection_id, item.owner.clone(), balance_old_owner);19291930        let balance_new_owner = <Balance<T>>::get(collection_id, new_owner.clone())1931            .checked_add(value)1932            .ok_or(Error::<T>::NumOverflow)?;1933        <Balance<T>>::insert(collection_id, new_owner.clone(), balance_new_owner);19341935        let old_owner = item.owner.clone();1936        let new_owner_has_account = full_item.owner.iter().any(|i| i.owner == new_owner);19371938        // transfer1939        if amount == value && !new_owner_has_account {1940            // change owner1941            // new owner do not have account1942            let mut new_full_item = full_item.clone();1943            new_full_item1944                .owner1945                .iter_mut()1946                .find(|i| i.owner == owner)1947                .expect("old owner does present in refungible")1948                .owner = new_owner.clone();1949            <ReFungibleItemList<T>>::insert(collection_id, item_id, new_full_item);19501951            // update index collection1952            Self::move_token_index(collection_id, item_id, &old_owner, &new_owner)?;1953        } else {1954            let mut new_full_item = full_item.clone();1955            new_full_item1956                .owner1957                .iter_mut()1958                .find(|i| i.owner == owner)1959                .expect("old owner does present in refungible")1960                .fraction -= value;19611962            // separate amount1963            if new_owner_has_account {1964                // new owner has account1965                new_full_item1966                    .owner1967                    .iter_mut()1968                    .find(|i| i.owner == new_owner)1969                    .expect("new owner has account")1970                    .fraction += value;1971            } else {1972                // new owner do not have account1973                new_full_item.owner.push(Ownership {1974                    owner: new_owner.clone(),1975                    fraction: value,1976                });1977                Self::add_token_index(collection_id, item_id, &new_owner)?;1978            }19791980            <ReFungibleItemList<T>>::insert(collection_id, item_id, new_full_item);1981        }19821983        Ok(())1984    }19851986    fn transfer_nft(1987        collection: &CollectionHandle<T>,1988        item_id: TokenId,1989        sender: T::AccountId,1990        new_owner: T::AccountId,1991    ) -> DispatchResult {1992        let collection_id = collection.id;1993        let mut item = <NftItemList<T>>::get(collection_id, item_id)1994            .ok_or(Error::<T>::TokenNotFound)?;19951996        ensure!(1997            sender == item.owner,1998            Error::<T>::MustBeTokenOwner1999        );20002001        // update balance2002        let balance_old_owner = <Balance<T>>::get(collection_id, item.owner.clone())2003            .checked_sub(1)2004            .ok_or(Error::<T>::NumOverflow)?;2005        <Balance<T>>::insert(collection_id, item.owner.clone(), balance_old_owner);20062007        let balancenew_owner = <Balance<T>>::get(collection_id, new_owner.clone())2008            .checked_add(1)2009            .ok_or(Error::<T>::NumOverflow)?;2010        <Balance<T>>::insert(collection_id, new_owner.clone(), balancenew_owner);20112012        // change owner2013        let old_owner = item.owner.clone();2014        item.owner = new_owner.clone();2015        <NftItemList<T>>::insert(collection_id, item_id, item);20162017        // update index collection2018        Self::move_token_index(collection_id, item_id, &old_owner, &new_owner)?;20192020        Ok(())2021    }2022    2023    fn set_re_fungible_variable_data(2024        collection: &CollectionHandle<T>,2025        item_id: TokenId,2026        data: Vec<u8>2027    ) -> DispatchResult {2028        let collection_id = collection.id;2029        let mut item = <ReFungibleItemList<T>>::get(collection_id, item_id)2030            .ok_or(Error::<T>::TokenNotFound)?;20312032        item.variable_data = data;20332034        <ReFungibleItemList<T>>::insert(collection_id, item_id, item);20352036        Ok(())2037    }20382039    fn set_nft_variable_data(2040        collection: &CollectionHandle<T>,2041        item_id: TokenId,2042        data: Vec<u8>2043    ) -> DispatchResult {2044        let collection_id = collection.id;2045        let mut item = <NftItemList<T>>::get(collection_id, item_id)2046            .ok_or(Error::<T>::TokenNotFound)?;2047        2048        item.variable_data = data;20492050        <NftItemList<T>>::insert(collection_id, item_id, item);2051        2052        Ok(())2053    }20542055    #[allow(dead_code)]2056    fn init_collection(item: &Collection<T>) {2057        // check params2058        assert!(2059            item.decimal_points <= MAX_DECIMAL_POINTS,2060            "decimal_points parameter must be lower than MAX_DECIMAL_POINTS"2061        );2062        assert!(2063            item.name.len() <= 64,2064            "Collection name can not be longer than 63 char"2065        );2066        assert!(2067            item.name.len() <= 256,2068            "Collection description can not be longer than 255 char"2069        );2070        assert!(2071            item.token_prefix.len() <= 16,2072            "Token prefix can not be longer than 15 char"2073        );20742075        // Generate next collection ID2076        let next_id = CreatedCollectionCount::get()2077            .checked_add(1)2078            .unwrap();20792080        CreatedCollectionCount::put(next_id);2081    }20822083    #[allow(dead_code)]2084    fn init_nft_token(collection_id: CollectionId, item: &NftItemType<T::AccountId>) {2085        let current_index = <ItemListIndex>::get(collection_id)2086            .checked_add(1)2087            .unwrap();20882089        let item_owner = item.owner.clone();2090        Self::add_token_index(collection_id, current_index, &item.owner).unwrap();20912092        <ItemListIndex>::insert(collection_id, current_index);20932094        // Update balance2095        let new_balance = <Balance<T>>::get(collection_id, &item_owner)2096            .checked_add(1)2097            .unwrap();2098        <Balance<T>>::insert(collection_id, item_owner.clone(), new_balance);2099    }21002101    #[allow(dead_code)]2102    fn init_fungible_token(collection_id: CollectionId, owner: &T::AccountId, item: &FungibleItemType) {2103        let current_index = <ItemListIndex>::get(collection_id)2104            .checked_add(1)2105            .unwrap();21062107        Self::add_token_index(collection_id, current_index, owner).unwrap();21082109        <ItemListIndex>::insert(collection_id, current_index);21102111        // Update balance2112        let new_balance = <Balance<T>>::get(collection_id, owner)2113            .checked_add(item.value)2114            .unwrap();2115        <Balance<T>>::insert(collection_id, (*owner).clone(), new_balance);2116    }21172118    #[allow(dead_code)]2119    fn init_refungible_token(collection_id: CollectionId, item: &ReFungibleItemType<T::AccountId>) {2120        let current_index = <ItemListIndex>::get(collection_id)2121            .checked_add(1)2122            .unwrap();21232124        let value = item.owner.first().unwrap().fraction;2125        let owner = item.owner.first().unwrap().owner.clone();21262127        Self::add_token_index(collection_id, current_index, &owner).unwrap();21282129        <ItemListIndex>::insert(collection_id, current_index);21302131        // Update balance2132        let new_balance = <Balance<T>>::get(collection_id, &owner)2133            .checked_add(value)2134            .unwrap();2135        <Balance<T>>::insert(collection_id, owner.clone(), new_balance);2136    }21372138    fn add_token_index(collection_id: CollectionId, item_index: TokenId, owner: &T::AccountId) -> DispatchResult {2139        // add to account limit2140        if <AccountItemCount<T>>::contains_key(owner) {21412142            // bound Owned tokens by a single address2143            let count = <AccountItemCount<T>>::get(owner);2144            ensure!(count < ChainLimit::get().account_token_ownership_limit, Error::<T>::AddressOwnershipLimitExceeded);21452146            <AccountItemCount<T>>::insert(owner.clone(), count2147                .checked_add(1)2148                .ok_or(Error::<T>::NumOverflow)?);2149        }2150        else {2151            <AccountItemCount<T>>::insert(owner.clone(), 1);2152        }21532154        let list_exists = <AddressTokens<T>>::contains_key(collection_id, owner);2155        if list_exists {2156            let mut list = <AddressTokens<T>>::get(collection_id, owner);2157            let item_contains = list.contains(&item_index.clone());21582159            if !item_contains {2160                list.push(item_index.clone());2161            }21622163            <AddressTokens<T>>::insert(collection_id, owner.clone(), list);2164        } else {2165            let mut itm = Vec::new();2166            itm.push(item_index.clone());2167            <AddressTokens<T>>::insert(collection_id, owner.clone(), itm);2168        }21692170        Ok(())2171    }21722173    fn remove_token_index(2174        collection_id: CollectionId,2175        item_index: TokenId,2176        owner: &T::AccountId,2177    ) -> DispatchResult {21782179        // update counter2180        <AccountItemCount<T>>::insert(owner.clone(), 2181            <AccountItemCount<T>>::get(owner)2182            .checked_sub(1)2183            .ok_or(Error::<T>::NumOverflow)?);218421852186        let list_exists = <AddressTokens<T>>::contains_key(collection_id, owner);2187        if list_exists {2188            let mut list = <AddressTokens<T>>::get(collection_id, owner);2189            let item_contains = list.contains(&item_index.clone());21902191            if item_contains {2192                list.retain(|&item| item != item_index);2193                <AddressTokens<T>>::insert(collection_id, owner.clone(), list);2194            }2195        }21962197        Ok(())2198    }21992200    fn move_token_index(2201        collection_id: CollectionId,2202        item_index: TokenId,2203        old_owner: &T::AccountId,2204        new_owner: &T::AccountId,2205    ) -> DispatchResult {2206        Self::remove_token_index(collection_id, item_index, old_owner)?;2207        Self::add_token_index(collection_id, item_index, new_owner)?;22082209        Ok(())2210    }2211    2212    fn ensure_contract_owned(account: T::AccountId, contract: &T::AccountId) -> DispatchResult {2213        ensure!(<ContractOwner<T>>::get(contract) == Some(account), Error::<T>::NoPermission);22142215        Ok(())2216    }2217}