git.delta.rocks / unique-network / refs/commits / 281e8172516b

1// Copyright 2019-2022 Unique Network (Gibraltar) Ltd.
2// This file is part of Unique Network.
3
4// Unique Network is free software: you can redistribute it and/or modify
5// it under the terms of the GNU General Public License as published by
6// the Free Software Foundation, either version 3 of the License, or
7// (at your option) any later version.
8
9// Unique Network is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12// GNU General Public License for more details.
13
14// You should have received a copy of the GNU General Public License
15// along with Unique Network. If not, see <http://www.gnu.org/licenses/>.
16
1use sp_std::vec;17use sp_std::vec;
218

14// You should have received a copy of the GNU General Public License14// You should have received a copy of the GNU General Public License
15// along with Unique Network. If not, see <http://www.gnu.org/licenses/>.15// along with Unique Network. If not, see <http://www.gnu.org/licenses/>.
1616
17//! # RMRK Core Proxy Pallet
18//!
19//! A pallet used as proxy for RMRK Core (<https://rmrk-team.github.io/rmrk-substrate/#/pallets/rmrk-core>).
20//!
21//! - [`Config`]
22//! - [`Call`]
23//! - [`Pallet`]
24//!
25//! ## Overview
26//!
27//! The RMRK Core Proxy pallet mirrors the functionality of RMRK Core,
28//! binding its externalities to Unique's own underlying structure.
29//! It is purposed to mimic RMRK Core exactly, allowing seamless integrations
30//! of solutions based on RMRK.
31//!
32//! RMRK Core itself contains essential functionality for RMRK's nested and
33//! multi-resourced NFTs.
34//!
35//! *Note*, that while RMRK itself is subject to active development and restructuring,
36//! the proxy may be caught temporarily out of date.
37//!
38//! ### What is RMRK?
39//!
40//! RMRK is a set of NFT standards which compose several "NFT 2.0 lego" primitives.
41//! Putting these legos together allows a user to create NFT systems of arbitrary complexity.
42//!
43//! Meaning, RMRK NFTs are dynamic, able to nest into each other and form a hierarchy,
44//! make use of specific changeable and partially shared metadata in the form of resources,
45//! and more.
46//!
47//! Visit RMRK documentation and repositories to learn more:
48//! - Docs: <https://docs.rmrk.app/getting-started/>
49//! - FAQ: <https://coda.io/@rmrk/faq>
50//! - Substrate code repository: <https://github.com/rmrk-team/rmrk-substrate>
51//! - RMRK specification repository: <https://github.com/rmrk-team/rmrk-spec>
52//!
53//! ## Terminology
54//!
55//! For more information on RMRK, see RMRK's own documentation.
56//!
57//! ### Intro to RMRK
58//!
59//! - **Resource:** Additional piece of metadata of an NFT usually serving to add
60//! a piece of media on top of the root metadata (NFT's own), be it a different wing
61//! on the root template bird or something entirely unrelated.
62//!
63//! - **Base:** A list of possible "components" - Parts, a combination of which can
64//! be appended/equipped to/on an NFT.
65//!
66//! - **Part:** Something that, together with other Parts, can constitute an NFT.
67//! Parts are defined in the Base to which they belong. Parts can be either
68//! of the `slot` type or `fixed` type. Slots are intended for equippables.
69//! Note that "part of something" and "Part of a Base" can be easily confused,
70//! and so in this documentation these words are distinguished by the capital letter.
71//!
72//! - **Theme:** Named objects of variable => value pairs which get interpolated into
73//! the Base's `themable` Parts. Themes can hold any value, but are often represented
74//! in RMRK's examples as colors applied to visible Parts.
75//!
76//! ### Peculiarities in Unique
77//!
78//! - **Scoped properties:** Properties that are normally obscured from users.
79//! Their purpose is to contain structured metadata that was not included in the Unique standard
80//! for collections and tokens, meant to be operated on by proxies and other outliers.
81//! Scoped property keys are prefixed with `some-scope:`, where `some-scope` is
82//! an arbitrary keyword, like "rmrk". `:` is considered an unacceptable symbol in user-defined
83//! properties, which, along with other safeguards, makes scoped ones impossible to tamper with.
84//!
85//! - **Auxiliary properties:** A slightly different structure of properties,
86//! trading universality of use for more convenient storage, writes and access.
87//! Meant to be inaccessible to end users.
88//!
89//! ## Proxy Implementation
90//!
91//! An external user is supposed to be able to utilize this proxy as they would
92//! utilize RMRK, and get exactly the same results. Normally, Unique transactions
93//! are off-limits to RMRK collections and tokens, and vice versa. However,
94//! the information stored on chain can be freely interpreted by storage reads and Unique RPCs.
95//!
96//! ### ID Mapping
97//!
98//! RMRK's collections' IDs are counted independently of Unique's and start at 0.
99//! Note that tokens' IDs still start at 1.
100//! The collections themselves, as well as tokens, are stored as Unique collections,
101//! and thus RMRK IDs are mapped to Unique IDs (but not vice versa).
102//!
103//! ### External/Internal Collection Insulation
104//!
105//! A Unique transaction cannot target collections purposed for RMRK,
106//! and they are flagged as `external` to specify that. On the other hand,
107//! due to the mapping, RMRK transactions and RPCs simply cannot reach Unique collections.
108//!
109//! ### Native Properties
110//!
111//! Many of RMRK's native parameters are stored as scoped properties of a collection
112//! or an NFT on the chain. Scoped properties are prefixed with `rmrk:`, where `:`
113//! is an unacceptable symbol in user-defined properties, which, along with other safeguards,
114//! makes them impossible to tamper with.
115//!
116//! ### Collection and NFT Types, or Base, Parts and Themes Handling
117//!
118//! RMRK introduces the concept of a Base, which is a catalogue of Parts,
119//! possible components of an NFT. Due to its similarity with the functionality
120//! of a token collection, a Base is stored and handled as one, and the Base's Parts and Themes
121//! are this collection's NFTs. See [`CollectionType`] and [`NftType`].
122//!
123//! ## Interface
124//!
125//! ### Dispatchables
126//!
127//! - `create_collection` - Create a new collection of NFTs.
128//! - `destroy_collection` - Destroy a collection.
129//! - `change_collection_issuer` - Change the issuer of a collection.
130//! Analogous to Unique's collection's [`owner`](up_data_structs::Collection).
131//! - `lock_collection` - "Lock" the collection and prevent new token creation. **Cannot be undone.**
132//! - `mint_nft` - Mint an NFT in a specified collection.
133//! - `burn_nft` - Burn an NFT, destroying it and its nested tokens.
134//! - `send` - Transfer an NFT from an account/NFT A to another account/NFT B.
135//! - `accept_nft` - Accept an NFT sent from another account to self or an owned NFT.
136//! - `reject_nft` - Reject an NFT sent from another account to self or owned NFT and **burn it**.
137//! - `accept_resource` - Accept the addition of a newly created pending resource to an existing NFT.
138//! - `accept_resource_removal` - Accept the removal of a removal-pending resource from an NFT.
139//! - `set_property` - Add or edit a custom user property of a token or a collection.
140//! - `set_priority` - Set a different order of resource priorities for an NFT.
141//! - `add_basic_resource` - Create and set/propose a basic resource for an NFT.
142//! - `add_composable_resource` - Create and set/propose a composable resource for an NFT.
143//! - `add_slot_resource` - Create and set/propose a slot resource for an NFT.
144//! - `remove_resource` - Remove and erase a resource from an NFT.
145
17#![cfg_attr(not(feature = "std"), no_std)]146#![cfg_attr(not(feature = "std"), no_std)]
18147
49178
50use RmrkProperty::*;179use RmrkProperty::*;
51180
181/// Maximum number of levels of depth in the token nesting tree.
52pub const NESTING_BUDGET: u32 = 5;182pub const NESTING_BUDGET: u32 = 5;
53183
54type PendingTarget = (CollectionId, TokenId);184type PendingTarget = (CollectionId, TokenId);
66	pub trait Config:196	pub trait Config:
67		frame_system::Config + pallet_common::Config + pallet_nonfungible::Config + account::Config197		frame_system::Config + pallet_common::Config + pallet_nonfungible::Config + account::Config
68	{198	{
199		/// Overarching event type.
69		type Event: From<Event<Self>> + IsType<<Self as frame_system::Config>::Event>;200		type Event: From<Event<Self>> + IsType<<Self as frame_system::Config>::Event>;
201
202		/// The weight information of this pallet.
70		type WeightInfo: WeightInfo;203		type WeightInfo: WeightInfo;
71	}204	}
72205
206	/// Latest yet-unused collection ID.
73	#[pallet::storage]207	#[pallet::storage]
74	#[pallet::getter(fn collection_index)]208	#[pallet::getter(fn collection_index)]
75	pub type CollectionIndex<T: Config> = StorageValue<_, RmrkCollectionId, ValueQuery>;209	pub type CollectionIndex<T: Config> = StorageValue<_, RmrkCollectionId, ValueQuery>;
76210
211	/// Mapping from RMRK collection ID to Unique's.
77	#[pallet::storage]212	#[pallet::storage]
78	pub type UniqueCollectionId<T: Config> =213	pub type UniqueCollectionId<T: Config> =
79		StorageMap<_, Twox64Concat, RmrkCollectionId, CollectionId, ValueQuery>;214		StorageMap<_, Twox64Concat, RmrkCollectionId, CollectionId, ValueQuery>;
159294
160	#[pallet::error]295	#[pallet::error]
161	pub enum Error<T> {296	pub enum Error<T> {
162		/* Unique-specific events */297		/* Unique proxy-specific events */
298		/// Property of the type of RMRK collection could not be read successfully.
163		CorruptedCollectionType,299		CorruptedCollectionType,
164		NftTypeEncodeError,300		// NftTypeEncodeError,
301		/// Too many symbols supplied as the property key. The maximum is [256](up_data_structs::MAX_PROPERTY_KEY_LENGTH).
165		RmrkPropertyKeyIsTooLong,302		RmrkPropertyKeyIsTooLong,
303		/// Too many bytes supplied as the property value. The maximum is [32768](up_data_structs::MAX_PROPERTY_VALUE_LENGTH).
166		RmrkPropertyValueIsTooLong,304		RmrkPropertyValueIsTooLong,
305		/// Could not find a property by the supplied key.
167		RmrkPropertyIsNotFound,306		RmrkPropertyIsNotFound,
307		/// Something went wrong when decoding encoded data from the storage.
308		/// Perhaps, there was a wrong key supplied for the type, or the data was improperly stored.
168		UnableToDecodeRmrkData,309		UnableToDecodeRmrkData,
169310
170		/* RMRK compatible events */311		/* RMRK compatible events */
312		/// Only destroying collections without tokens is allowed.
171		CollectionNotEmpty,313		CollectionNotEmpty,
314		/// Could not find an ID for a collection. It is likely there were too many collections created on the chain, causing an overflow.
172		NoAvailableCollectionId,315		NoAvailableCollectionId,
316		/// Token does not exist, or there is no suitable ID for it, likely too many tokens were created in a collection, causing an overflow.
173		NoAvailableNftId,317		NoAvailableNftId,
318		/// Collection does not exist, has a wrong type, or does not map to a Unique ID.
174		CollectionUnknown,319		CollectionUnknown,
320		/// No permission to perform action.
175		NoPermission,321		NoPermission,
322		/// Token is marked as non-transferable, and thus cannot be transferred.
176		NonTransferable,323		NonTransferable,
324		/// Too many tokens created in the collection, no new ones are allowed.
177		CollectionFullOrLocked,325		CollectionFullOrLocked,
326		/// No such resource found.
178		ResourceDoesntExist,327		ResourceDoesntExist,
328		/// If an NFT is sent to a descendant, that would form a nesting loop, an ouroboros.
329		/// Sending to self is redundant.
179		CannotSendToDescendentOrSelf,330		CannotSendToDescendentOrSelf,
331		/// Not the target owner of the sent NFT.
180		CannotAcceptNonOwnedNft,332		CannotAcceptNonOwnedNft,
333		/// Not the target owner of the sent NFT.
181		CannotRejectNonOwnedNft,334		CannotRejectNonOwnedNft,
335		/// NFT was not sent and is not pending.
182		CannotRejectNonPendingNft,336		CannotRejectNonPendingNft,
337		/// Resource is not pending for the operation.
183		ResourceNotPending,338		ResourceNotPending,
339		/// Could not find an ID for the resource. It is likely there were too many resources created on an NFT, causing an overflow.
184		NoAvailableResourceId,340		NoAvailableResourceId,
185	}341	}
186342
187	#[pallet::call]343	#[pallet::call]
188	impl<T: Config> Pallet<T> {344	impl<T: Config> Pallet<T> {
189		/// Create a collection345		// todo :refactor replace every collection_id with rmrk_collection_id (and nft_id) in arguments for uniformity?
346
347		/// Create a new collection of NFTs.
348		///
349		/// # Permissions:
350		/// * Anyone - will be assigned as the issuer of the collection.
351		///
352		/// # Arguments:
353		/// - `metadata`: Metadata describing the collection, e.g. IPFS hash. Cannot be changed.
354		/// - `max`: Optional maximum number of tokens.
355		/// - `symbol`: UTF-8 string with token prefix, by which to represent the token in wallets and UIs.
356		/// Analogous to Unique's [`token_prefix`](up_data_structs::Collection). Cannot be changed.
190		#[transactional]357		#[transactional]
191		#[pallet::weight(<SelfWeightOf<T>>::create_collection())]358		#[pallet::weight(<SelfWeightOf<T>>::create_collection())]
192		pub fn create_collection(359		pub fn create_collection(
226				T::CrossAccountId::from_sub(sender.clone()),393				T::CrossAccountId::from_sub(sender.clone()),
227				data,394				data,
228				[395				[
229					Self::rmrk_property(Metadata, &metadata)?,396					Self::encode_rmrk_property(Metadata, &metadata)?,
230					Self::rmrk_property(CollectionType, &misc::CollectionType::Regular)?,397					Self::encode_rmrk_property(CollectionType, &misc::CollectionType::Regular)?,
231				]398				]
232				.into_iter(),399				.into_iter(),
233			)?;400			)?;
237404
238			<PalletCommon<T>>::set_scoped_collection_property(405			<PalletCommon<T>>::set_scoped_collection_property(
239				unique_collection_id,406				unique_collection_id,
240				PropertyScope::Rmrk,407				RMRK_SCOPE,
241				Self::rmrk_property(RmrkInternalCollectionId, &rmrk_collection_id)?,408				Self::encode_rmrk_property(RmrkInternalCollectionId, &rmrk_collection_id)?,
242			)?;409			)?;
243410
244			<CollectionIndex<T>>::mutate(|n| *n += 1);411			<CollectionIndex<T>>::mutate(|n| *n += 1);
251			Ok(())418			Ok(())
252		}419		}
253420
254		/// destroy collection421		/// Destroy a collection.
422		///
423		/// Only empty collections can be destroyed. If it has any tokens, they must be burned first.
424		///
425		/// # Permissions:
426		/// * Collection issuer
427		///
428		/// # Arguments:
429		/// - `collection_id`: RMRK ID of the collection to destroy.
255		#[transactional]430		#[transactional]
256		#[pallet::weight(<SelfWeightOf<T>>::destroy_collection())]431		#[pallet::weight(<SelfWeightOf<T>>::destroy_collection())]
257		pub fn destroy_collection(432		pub fn destroy_collection(
278			Ok(())453			Ok(())
279		}454		}
280455
281		/// Change the issuer of a collection456		/// Change the issuer of a collection. Analogous to Unique's collection's [`owner`](up_data_structs::Collection).
282		///457		///
283		/// Parameters:458		/// # Permissions:
284		/// - `origin`: sender of the transaction459		/// * Collection issuer
460		///
461		/// # Arguments:
285		/// - `collection_id`: collection id of the nft to change issuer of462		/// - `collection_id`: RMRK collection ID to change the issuer of.
286		/// - `new_issuer`: Collection's new issuer463		/// - `new_issuer`: Collection's new issuer.
287		#[transactional]464		#[transactional]
288		#[pallet::weight(<SelfWeightOf<T>>::change_collection_issuer())]465		#[pallet::weight(<SelfWeightOf<T>>::change_collection_issuer())]
289		pub fn change_collection_issuer(466		pub fn change_collection_issuer(
314			Ok(())491			Ok(())
315		}492		}
316493
317		/// lock collection494		/// "Lock" the collection and prevent new token creation. Cannot be undone.
495		///
496		/// # Permissions:
497		/// * Collection issuer
498		///
499		/// # Arguments:
500		/// - `collection_id`: RMRK ID of the collection to lock.
318		#[transactional]501		#[transactional]
319		#[pallet::weight(<SelfWeightOf<T>>::lock_collection())]502		#[pallet::weight(<SelfWeightOf<T>>::lock_collection())]
320		pub fn lock_collection(503		pub fn lock_collection(
346			Ok(())529			Ok(())
347		}530		}
348531
349		/// Mints an NFT in the specified collection532		/// Mint an NFT in a specified collection.
350		/// Sets metadata and the royalty attribute
351		///533		///
352		/// Parameters:534		/// # Permissions:
353		/// - `collection_id`: The class of the asset to be minted.535		/// * Collection issuer
536		///
537		/// # Arguments:
538		/// - `owner`: Owner account of the NFT. If set to None, defaults to the sender (collection issuer).
354		/// - `nft_id`: The nft value of the asset to be minted.539		/// - `collection_id`: RMRK collection ID for the NFT to be minted within. Cannot be changed.
355		/// - `recipient`: Receiver of the royalty540		/// - `recipient`: Receiver account of the royalty. Has no effect if the `royalty_amount` is not set. Cannot be changed.
356		/// - `royalty`: Permillage reward from each trade for the Recipient541		/// - `royalty_amount`: Optional permillage reward from each trade for the `recipient`. Cannot be changed.
357		/// - `metadata`: Arbitrary data about an nft, e.g. IPFS hash542		/// - `metadata`: Arbitrary data about an NFT, e.g. IPFS hash. Cannot be changed.
358		/// - `transferable`: Ability to transfer this NFT543		/// - `transferable`: Can this NFT be transferred? Cannot be changed.
544		/// - `resources`: Resource data to be added to the NFT immediately after minting.
359		#[transactional]545		#[transactional]
360		#[pallet::weight(<SelfWeightOf<T>>::mint_nft(resources.as_ref().map(|r| r.len() as u32).unwrap_or(0)))]546		#[pallet::weight(<SelfWeightOf<T>>::mint_nft(resources.as_ref().map(|r| r.len() as u32).unwrap_or(0)))]
361		pub fn mint_nft(547		pub fn mint_nft(
390				&cross_owner,576				&cross_owner,
391				&collection,577				&collection,
392				[578				[
393					Self::rmrk_property(TokenType, &NftType::Regular)?,579					Self::encode_rmrk_property(TokenType, &NftType::Regular)?,
394					Self::rmrk_property(Transferable, &transferable)?,580					Self::encode_rmrk_property(Transferable, &transferable)?,
395					Self::rmrk_property(PendingNftAccept, &None::<PendingTarget>)?,581					Self::encode_rmrk_property(PendingNftAccept, &None::<PendingTarget>)?,
396					Self::rmrk_property(RoyaltyInfo, &royalty_info)?,582					Self::encode_rmrk_property(RoyaltyInfo, &royalty_info)?,
397					Self::rmrk_property(Metadata, &metadata)?,583					Self::encode_rmrk_property(Metadata, &metadata)?,
398					Self::rmrk_property(Equipped, &false)?,584					Self::encode_rmrk_property(Equipped, &false)?,
399					Self::rmrk_property(ResourcePriorities, &<Vec<u8>>::new())?,585					Self::encode_rmrk_property(ResourcePriorities, &<Vec<u8>>::new())?,
400					Self::rmrk_property(NextResourceId, &(0 as RmrkResourceId))?,586					Self::encode_rmrk_property(NextResourceId, &(0 as RmrkResourceId))?,
401					Self::rmrk_property(PendingChildren, &PendingChildrenSet::new())?,587					Self::encode_rmrk_property(PendingChildren, &PendingChildrenSet::new())?,
402					Self::rmrk_property(AssociatedBases, &BasesMap::new())?,588					Self::encode_rmrk_property(AssociatedBases, &BasesMap::new())?,
403				]589				]
404				.into_iter(),590				.into_iter(),
405			)591			)
423			Ok(())609			Ok(())
424		}610		}
425611
426		/// burn nft612		/// Burn an NFT, destroying it and its nested tokens up to the specified limit.
613		/// If the burning budget is exceeded, the transaction is reverted.
614		///
615		/// This is the way to burn a nested token as well.
616		///
617		/// For more information, see [`burn_recursively`](pallet_nonfungible::pallet::Pallet::burn_recursively).
618		///
619		/// # Permissions:
620		/// * Token owner
621		///
622		/// # Arguments:
623		/// - `collection_id`: RMRK ID of the collection in which the NFT to burn belongs to.
624		/// - `nft_id`: ID of the NFT to be destroyed.
625		/// - `max_burns`: Maximum number of tokens to burn, assuming nesting. The transaction
626		/// is reverted if there are more tokens to burn in the nesting tree than this number.
627		/// This is primarily a mechanism of transaction weight control.
427		#[transactional]628		#[transactional]
428		#[pallet::weight(<SelfWeightOf<T>>::burn_nft(*max_burns))]629		#[pallet::weight(<SelfWeightOf<T>>::burn_nft(*max_burns))]
429		pub fn burn_nft(630		pub fn burn_nft(
458			Ok(())659			Ok(())
459		}660		}
460661
461		/// Transfers a NFT from an Account or NFT A to another Account or NFT B662		/// Transfer an NFT from an account/NFT A to another account/NFT B.
663		/// The token must be transferable. Nesting cannot occur deeper than the [`NESTING_BUDGET`].
462		///664		///
463		/// Parameters:665		/// If the target owner is an NFT owned by another account, then the NFT will enter
464		/// - `origin`: sender of the transaction666		/// the pending state and will have to be accepted by the other account.
465		/// - `rmrk_collection_id`: collection id of the nft to be transferred667		///
668		/// # Permissions:
669		/// - Token owner
670		///
671		/// # Arguments:
672		/// - `collection_id`: RMRK ID of the collection of the NFT to be transferred.
466		/// - `rmrk_nft_id`: nft id of the nft to be transferred673		/// - `nft_id`: ID of the NFT to be transferred.
467		/// - `new_owner`: new owner of the nft which can be either an account or a NFT674		/// - `new_owner`: New owner of the nft which can be either an account or a NFT.
468		#[transactional]675		#[transactional]
469		#[pallet::weight(<SelfWeightOf<T>>::send())]676		#[pallet::weight(<SelfWeightOf<T>>::send())]
470		pub fn send(677		pub fn send(
535						<PalletNft<T>>::set_scoped_token_property(742						<PalletNft<T>>::set_scoped_token_property(
536							collection.id,743							collection.id,
537							nft_id,744							nft_id,
538							PropertyScope::Rmrk,745							RMRK_SCOPE,
539							Self::rmrk_property::<Option<PendingTarget>>(746							Self::encode_rmrk_property::<Option<PendingTarget>>(
540								PendingNftAccept,747								PendingNftAccept,
541								&Some((target_collection_id, target_nft_id.into())),748								&Some((target_collection_id, target_nft_id.into())),
542							)?,749							)?,
578			Ok(())785			Ok(())
579		}786		}
580787
581		/// Accepts an NFT sent from another account to self or owned NFT788		/// Accept an NFT sent from another account to self or an owned NFT.
582		///789		///
583		/// Parameters:790		/// The NFT in question must be pending, and, thus, be [sent](`Pallet::send`) first.
584		/// - `origin`: sender of the transaction791		///
792		/// # Permissions:
793		/// - Token-owner-to-be
794		///
795		/// # Arguments:
585		/// - `rmrk_collection_id`: collection id of the nft to be accepted796		/// - `rmrk_collection_id`: RMRK collection ID of the NFT to be accepted.
586		/// - `rmrk_nft_id`: nft id of the nft to be accepted797		/// - `rmrk_nft_id`: ID of the NFT to be accepted.
587		/// - `new_owner`: either origin's account ID or origin-owned NFT, whichever the NFT was798		/// - `new_owner`: Either the sender's account ID or a sender-owned NFT,
588		///   sent to799		/// whichever the accepted NFT was sent to.
589		#[transactional]800		#[transactional]
590		#[pallet::weight(<SelfWeightOf<T>>::accept_nft())]801		#[pallet::weight(<SelfWeightOf<T>>::accept_nft())]
591		pub fn accept_nft(802		pub fn accept_nft(
650				<PalletNft<T>>::set_scoped_token_property(861				<PalletNft<T>>::set_scoped_token_property(
651					collection.id,862					collection.id,
652					nft_id,863					nft_id,
653					PropertyScope::Rmrk,864					RMRK_SCOPE,
654					Self::rmrk_property(PendingNftAccept, &None::<PendingTarget>)?,865					Self::encode_rmrk_property(PendingNftAccept, &None::<PendingTarget>)?,
655				)?;866				)?;
656			}867			}
657868
665			Ok(())876			Ok(())
666		}877		}
667878
668		/// Rejects an NFT sent from another account to self or owned NFT879		/// Reject an NFT sent from another account to self or owned NFT.
880		/// The NFT in question will not be sent back and burnt instead.
669		///881		///
670		/// Parameters:882		/// The NFT in question must be pending, and, thus, be [sent](`Pallet::send`) first.
671		/// - `origin`: sender of the transaction883		///
884		/// # Permissions:
885		/// - Token-owner-to-be-not
886		///
887		/// # Arguments:
672		/// - `rmrk_collection_id`: collection id of the nft to be accepted888		/// - `rmrk_collection_id`: RMRK ID of the NFT to be rejected.
673		/// - `rmrk_nft_id`: nft id of the nft to be accepted889		/// - `rmrk_nft_id`: ID of the NFT to be rejected.
674		#[transactional]890		#[transactional]
675		#[pallet::weight(<SelfWeightOf<T>>::reject_nft())]891		#[pallet::weight(<SelfWeightOf<T>>::reject_nft())]
676		pub fn reject_nft(892		pub fn reject_nft(
724			Ok(())940			Ok(())
725		}941		}
726942
727		/// accept the addition of a new resource to an existing NFT943		/// Accept the addition of a newly created pending resource to an existing NFT.
944		///
945		/// This transaction is needed when a resource is created and assigned to an NFT
946		/// by a non-owner, i.e. the collection issuer, with one of the
947		/// [`add_...` transactions](Pallet::add_basic_resource).
948		///
949		/// # Permissions:
950		/// - Token owner
951		///
952		/// # Arguments:
953		/// - `rmrk_collection_id`: RMRK collection ID of the NFT.
954		/// - `rmrk_nft_id`: ID of the NFT with a pending resource to be accepted.
955		/// - `resource_id`: ID of the newly created pending resource.
728		#[transactional]956		#[transactional]
729		#[pallet::weight(<SelfWeightOf<T>>::accept_resource())]957		#[pallet::weight(<SelfWeightOf<T>>::accept_resource())]
730		pub fn accept_resource(958		pub fn accept_resource(
767			Ok(())995			Ok(())
768		}996		}
769997
770		/// accept the removal of a resource of an existing NFT998		/// Accept the removal of a removal-pending resource from an NFT.
999		///
1000		/// This transaction is needed when a non-owner, i.e. the collection issuer,
1001		/// requests a [removal](`Pallet::remove_resource`) of a resource from an NFT.
1002		///
1003		/// # Permissions:
1004		/// - Token owner
1005		///
1006		/// # Arguments:
1007		/// - `rmrk_collection_id`: RMRK collection ID of the NFT.
1008		/// - `rmrk_nft_id`: ID of the NFT with a resource to be removed.
1009		/// - `resource_id`: ID of the removal-pending resource.
771		#[transactional]1010		#[transactional]
772		#[pallet::weight(<SelfWeightOf<T>>::accept_resource_removal())]1011		#[pallet::weight(<SelfWeightOf<T>>::accept_resource_removal())]
773		pub fn accept_resource_removal(1012		pub fn accept_resource_removal(
7951034
796			ensure!(cross_sender == nft_owner, <Error<T>>::NoPermission);1035			ensure!(cross_sender == nft_owner, <Error<T>>::NoPermission);
7971036
798			let resource_id_key = Self::rmrk_property_key(ResourceId(resource_id))?;1037			let resource_id_key = Self::get_scoped_property_key(ResourceId(resource_id))?;
7991038
800			let resource_info = <PalletNft<T>>::token_aux_property((1039			let resource_info = <PalletNft<T>>::token_aux_property((
801				collection_id,1040				collection_id,
802				nft_id,1041				nft_id,
803				PropertyScope::Rmrk,1042				RMRK_SCOPE,
804				resource_id_key.clone(),1043				resource_id_key.clone(),
805			))1044			))
806			.ok_or(<Error<T>>::ResourceDoesntExist)?;1045			.ok_or(<Error<T>>::ResourceDoesntExist)?;
8071046
808			let resource_info: RmrkResourceInfo = Self::decode_property(&resource_info)?;1047			let resource_info: RmrkResourceInfo = Self::decode_property_value(&resource_info)?;
8091048
810			ensure!(1049			ensure!(
811				resource_info.pending_removal,1050				resource_info.pending_removal,
815			<PalletNft<T>>::remove_token_aux_property(1054			<PalletNft<T>>::remove_token_aux_property(
816				collection_id,1055				collection_id,
817				nft_id,1056				nft_id,
818				PropertyScope::Rmrk,1057				RMRK_SCOPE,
819				resource_id_key,1058				resource_id_key,
820			);1059			);
8211060
833			Ok(())1072			Ok(())
834		}1073		}
8351074
836		/// set a custom value on an NFT1075		/// Add or edit a custom user property, a key-value pair, describing the metadata
1076		/// of a token or a collection, on either one of these.
1077		///
1078		/// Note that in this proxy implementation many details regarding RMRK are stored
1079		/// as scoped properties prefixed with "rmrk:", normally inaccessible
1080		/// to external transactions and RPCs.
1081		///
1082		/// # Permissions:
1083		/// - Collection issuer - in case of collection property
1084		/// - Token owner - in case of NFT property
1085		///
1086		/// # Arguments:
1087		/// - `rmrk_collection_id`: RMRK collection ID.
1088		/// - `maybe_nft_id`: Optional ID of the NFT. If left empty, then the property is set for the collection.
1089		/// - `key`: Key of the custom property to be referenced by.
1090		/// - `value`: Value of the custom property to be stored.
837		#[transactional]1091		#[transactional]
838		#[pallet::weight(<SelfWeightOf<T>>::set_property())]1092		#[pallet::weight(<SelfWeightOf<T>>::set_property())]
839		pub fn set_property(1093		pub fn set_property(
863					<PalletNft<T>>::set_scoped_token_property(1117					<PalletNft<T>>::set_scoped_token_property(
864						collection_id,1118						collection_id,
865						token_id,1119						token_id,
866						PropertyScope::Rmrk,1120						RMRK_SCOPE,
867						Self::rmrk_property(UserProperty(key.as_slice()), &value)?,1121						Self::encode_rmrk_property(UserProperty(key.as_slice()), &value)?,
868					)?;1122					)?;
869				}1123				}
870				None => {1124				None => {
8771131
878					<PalletCommon<T>>::set_scoped_collection_property(1132					<PalletCommon<T>>::set_scoped_collection_property(
879						collection_id,1133						collection_id,
880						PropertyScope::Rmrk,1134						RMRK_SCOPE,
881						Self::rmrk_property(UserProperty(key.as_slice()), &value)?,1135						Self::encode_rmrk_property(UserProperty(key.as_slice()), &value)?,
882					)?;1136					)?;
883				}1137				}
884			}1138			}
893			Ok(())1147			Ok(())
894		}1148		}
8951149
896		/// set a different order of resource priority1150		/// Set a different order of resource priorities for an NFT. Priorities can be used,
1151		/// for example, for order of rendering.
1152		///
1153		/// Note that the priorities are not updated automatically, and are an empty vector
1154		/// by default. There is no pre-set definition for the order to be particular,
1155		/// it can be interpreted arbitrarily use-case by use-case.
1156		///
1157		/// # Permissions:
1158		/// - Token owner
1159		///
1160		/// # Arguments:
1161		/// - `rmrk_collection_id`: RMRK collection ID of the NFT.
1162		/// - `rmrk_nft_id`: ID of the NFT to rearrange resource priorities for.
1163		/// - `priorities`: Ordered vector of resource IDs.
897		#[transactional]1164		#[transactional]
898		#[pallet::weight(<SelfWeightOf<T>>::set_priority())]1165		#[pallet::weight(<SelfWeightOf<T>>::set_priority())]
899		pub fn set_priority(1166		pub fn set_priority(
920			<PalletNft<T>>::set_scoped_token_property(1187			<PalletNft<T>>::set_scoped_token_property(
921				collection_id,1188				collection_id,
922				nft_id,1189				nft_id,
923				PropertyScope::Rmrk,1190				RMRK_SCOPE,
924				Self::rmrk_property(ResourcePriorities, &priorities.into_inner())?,1191				Self::encode_rmrk_property(ResourcePriorities, &priorities.into_inner())?,
925			)?;1192			)?;
9261193
927			Self::deposit_event(Event::<T>::PrioritySet {1194			Self::deposit_event(Event::<T>::PrioritySet {
932			Ok(())1199			Ok(())
933		}1200		}
9341201
935		/// Create basic resource1202		/// Create and set/propose a basic resource for an NFT.
1203		///
1204		/// A basic resource is the simplest, lacking a Base and anything that comes with it.
1205		/// See RMRK docs for more information and examples.
1206		///
1207		/// # Permissions:
1208		/// - Collection issuer - if not the token owner, adding the resource will warrant
1209		/// the owner's [acceptance](Pallet::accept_resource).
1210		///
1211		/// # Arguments:
1212		/// - `rmrk_collection_id`: RMRK collection ID of the NFT.
1213		/// - `nft_id`: ID of the NFT to assign a resource to.
1214		/// - `resource`: Data of the resource to be created.
936		#[transactional]1215		#[transactional]
937		#[pallet::weight(<SelfWeightOf<T>>::add_basic_resource())]1216		#[pallet::weight(<SelfWeightOf<T>>::add_basic_resource())]
938		pub fn add_basic_resource(1217		pub fn add_basic_resource(
962			Ok(())1241			Ok(())
963		}1242		}
9641243
965		/// Create composable resource1244		/// Create and set/propose a composable resource for an NFT.
1245		///
1246		/// A composable resource links to a Base and has a subset of its Parts it is composed of.
1247		/// See RMRK docs for more information and examples.
1248		///
1249		/// # Permissions:
1250		/// - Collection issuer - if not the token owner, adding the resource will warrant
1251		/// the owner's [acceptance](Pallet::accept_resource).
1252		///
1253		/// # Arguments:
1254		/// - `rmrk_collection_id`: RMRK collection ID of the NFT.
1255		/// - `nft_id`: ID of the NFT to assign a resource to.
1256		/// - `resource`: Data of the resource to be created.
966		#[transactional]1257		#[transactional]
967		#[pallet::weight(<SelfWeightOf<T>>::add_composable_resource())]1258		#[pallet::weight(<SelfWeightOf<T>>::add_composable_resource())]
968		pub fn add_composable_resource(1259		pub fn add_composable_resource(
990			<PalletNft<T>>::try_mutate_token_aux_property(1281			<PalletNft<T>>::try_mutate_token_aux_property(
991				collection_id,1282				collection_id,
992				nft_id.into(),1283				nft_id.into(),
993				PropertyScope::Rmrk,1284				RMRK_SCOPE,
994				Self::rmrk_property_key(AssociatedBases)?,1285				Self::get_scoped_property_key(AssociatedBases)?,
995				|value| -> DispatchResult {1286				|value| -> DispatchResult {
996					let mut bases: BasesMap = match value {1287					let mut bases: BasesMap = match value {
997						Some(value) => Self::decode_property(value)?,1288						Some(value) => Self::decode_property_value(value)?,
998						None => BasesMap::new(),1289						None => BasesMap::new(),
999					};1290					};
10001291
1001					*bases.entry(base_id).or_insert(0) += 1;1292					*bases.entry(base_id).or_insert(0) += 1;
10021293
1003					*value = Some(Self::encode_property(&bases)?);1294					*value = Some(Self::encode_property_value(&bases)?);
1004					Ok(())1295					Ok(())
1005				},1296				},
1006			)?;1297			)?;
1012			Ok(())1303			Ok(())
1013		}1304		}
10141305
1015		/// Create slot resource1306		/// Create and set/propose a slot resource for an NFT.
1307		///
1308		/// A slot resource links to a Base and a slot ID in it which it can fit into.
1309		/// See RMRK docs for more information and examples.
1310		///
1311		/// # Permissions:
1312		/// - Collection issuer - if not the token owner, adding the resource will warrant
1313		/// the owner's [acceptance](Pallet::accept_resource).
1314		///
1315		/// # Arguments:
1316		/// - `rmrk_collection_id`: RMRK collection ID of the NFT.
1317		/// - `nft_id`: ID of the NFT to assign a resource to.
1318		/// - `resource`: Data of the resource to be created.
1016		#[transactional]1319		#[transactional]
1017		#[pallet::weight(<SelfWeightOf<T>>::add_slot_resource())]1320		#[pallet::weight(<SelfWeightOf<T>>::add_slot_resource())]
1018		pub fn add_slot_resource(1321		pub fn add_slot_resource(
1042			Ok(())1345			Ok(())
1043		}1346		}
10441347
1045		/// remove resource1348		/// Remove and erase a resource from an NFT.
1349		///
1350		/// If the sender does not own the NFT, then it will be pending confirmation,
1351		/// and will have to be [accepted](Pallet::accept_resource_removal) by the token owner.
1352		///
1353		/// # Permissions
1354		/// - Collection issuer
1355		///
1356		/// # Arguments
1357		/// - `collection_id`: RMRK ID of a collection to which the NFT making use of the resource belongs to.
1358		/// - `nft_id`: ID of the NFT with a resource to be removed.
1359		/// - `resource_id`: ID of the resource to be removed.
1046		#[transactional]1360		#[transactional]
1047		#[pallet::weight(<SelfWeightOf<T>>::remove_resource())]1361		#[pallet::weight(<SelfWeightOf<T>>::remove_resource())]
1048		pub fn remove_resource(1362		pub fn remove_resource(
1070}1384}
10711385
1072impl<T: Config> Pallet<T> {1386impl<T: Config> Pallet<T> {
1073	pub fn rmrk_property_key(rmrk_key: RmrkProperty) -> Result<PropertyKey, DispatchError> {1387	/// Transform one of possible RMRK keys into a byte key with a RMRK scope.
1388	pub fn get_scoped_property_key(rmrk_key: RmrkProperty) -> Result<PropertyKey, DispatchError> {
1074		let key = rmrk_key.to_key::<T>()?;1389		let key = rmrk_key.to_key::<T>()?;
10751390
1076		let scoped_key = PropertyScope::Rmrk1391		let scoped_key = RMRK_SCOPE
1077			.apply(key)1392			.apply(key)
1078			.map_err(|_| <Error<T>>::RmrkPropertyKeyIsTooLong)?;1393			.map_err(|_| <Error<T>>::RmrkPropertyKeyIsTooLong)?;
10791394
1080		Ok(scoped_key)1395		Ok(scoped_key)
1081	}1396	}
10821397
1083	// todo think about renaming these1398	/// Form a Unique property, transforming a RMRK key into bytes (without assigning the scope yet)
1399	/// and encoding the value from an arbitrary type into bytes.
1084	pub fn rmrk_property<E: Encode>(1400	pub fn encode_rmrk_property<E: Encode>(
1085		rmrk_key: RmrkProperty,1401		rmrk_key: RmrkProperty,
1086		value: &E,1402		value: &E,
1087	) -> Result<Property, DispatchError> {1403	) -> Result<Property, DispatchError> {
1088		let key = rmrk_key.to_key::<T>()?;1404		let key = rmrk_key.to_key::<T>()?;
10891405
1090		let value = Self::encode_property(value)?;1406		let value = Self::encode_property_value(value)?;
10911407
1092		let property = Property { key, value };1408		let property = Property { key, value };
10931409
1094		Ok(property)1410		Ok(property)
1095	}1411	}
10961412
1097	pub fn encode_property<E: Encode, S: Get<u32>>(1413	/// Encode property value from an arbitrary type into bytes for storage.
1414	pub fn encode_property_value<E: Encode, S: Get<u32>>(
1098		value: &E,1415		value: &E,
1099	) -> Result<BoundedBytes<S>, DispatchError> {1416	) -> Result<BoundedBytes<S>, DispatchError> {
1100		let value = value1417		let value = value
1105		Ok(value)1422		Ok(value)
1106	}1423	}
11071424
1108	pub fn decode_property<D: Decode, S: Get<u32>>(1425	/// Decode property value from bytes into an arbitrary type.
1426	pub fn decode_property_value<D: Decode, S: Get<u32>>(
1109		vec: &BoundedBytes<S>,1427		vec: &BoundedBytes<S>,
1110	) -> Result<D, DispatchError> {1428	) -> Result<D, DispatchError> {
1111		vec.decode()1429		vec.decode()
1112			.map_err(|_| <Error<T>>::UnableToDecodeRmrkData.into())1430			.map_err(|_| <Error<T>>::UnableToDecodeRmrkData.into())
1113	}1431	}
11141432
1433	/// Change the limit of a property value byte vector.
1115	pub fn rebind<L, S>(vec: &BoundedVec<u8, L>) -> Result<BoundedVec<u8, S>, DispatchError>1434	pub fn rebind<L, S>(vec: &BoundedVec<u8, L>) -> Result<BoundedVec<u8, S>, DispatchError>
1116	where1435	where
1117		BoundedVec<u8, S>: TryFrom<Vec<u8>>,1436		BoundedVec<u8, S>: TryFrom<Vec<u8>>,
1120			.map_err(|_| <Error<T>>::RmrkPropertyValueIsTooLong.into())1439			.map_err(|_| <Error<T>>::RmrkPropertyValueIsTooLong.into())
1121	}1440	}
11221441
1442	/// Initialize a new NFT collection with certain RMRK-scoped properties.
1443	///
1444	/// See [`init_collection`](pallet_nonfungible::pallet::Pallet::init_collection) for more details.
1123	fn init_collection(1445	fn init_collection(
1124		sender: T::CrossAccountId,1446		sender: T::CrossAccountId,
1125		data: CreateCollectionData<T::AccountId>,1447		data: CreateCollectionData<T::AccountId>,
11331455
1134		<PalletCommon<T>>::set_scoped_collection_properties(1456		<PalletCommon<T>>::set_scoped_collection_properties(
1135			collection_id?,1457			collection_id?,
1136			PropertyScope::Rmrk,1458			RMRK_SCOPE,
1137			properties,1459			properties,
1138		)?;1460		)?;
11391461
1140		collection_id1462		collection_id
1141	}1463	}
11421464
1465	/// Mint a new NFT with certain RMRK-scoped properties. Sender must be the collection owner.
1466	///
1467	/// See [`create_item`](pallet_nonfungible::pallet::Pallet::create_item) for more details.
1143	pub fn create_nft(1468	pub fn create_nft(
1144		sender: &T::CrossAccountId,1469		sender: &T::CrossAccountId,
1145		owner: &T::CrossAccountId,1470		owner: &T::CrossAccountId,
11571482
1158		let nft_id = <PalletNft<T>>::current_token_id(collection.id);1483		let nft_id = <PalletNft<T>>::current_token_id(collection.id);
11591484
1160		<PalletNft<T>>::set_scoped_token_properties(1485		<PalletNft<T>>::set_scoped_token_properties(collection.id, nft_id, RMRK_SCOPE, properties)?;
1161			collection.id,
1162			nft_id,
1163			PropertyScope::Rmrk,
1164			properties,
1165		)?;
11661486
1167		Ok(nft_id)1487		Ok(nft_id)
1168	}1488	}
11691489
1490	/// Burn an NFT, along with its nested children, limited by `max_burns`. The sender must be the token owner.
1491	///
1492	/// See [`burn_recursively`](pallet_nonfungible::pallet::Pallet::burn_recursively) for more details.
1170	fn destroy_nft(1493	fn destroy_nft(
1171		sender: T::CrossAccountId,1494		sender: T::CrossAccountId,
1172		collection_id: CollectionId,1495		collection_id: CollectionId,
1207		)1530		)
1208	}1531	}
12091532
1533	/// Add a sent token pending acceptance to the target owning token as a property.
1210	fn insert_pending_child(1534	fn insert_pending_child(
1211		target: (CollectionId, TokenId),1535		target: (CollectionId, TokenId),
1212		child: (RmrkCollectionId, RmrkNftId),1536		child: (RmrkCollectionId, RmrkNftId),
1213	) -> DispatchResult {1537	) -> DispatchResult {
1214		Self::mutate_pending_child(target, |pending_children| {1538		Self::mutate_pending_children(target, |pending_children| {
1215			pending_children.insert(child);1539			pending_children.insert(child);
1216		})1540		})
1217	}1541	}
12181542
1543	/// Remove a sent token pending acceptance from the target token's properties.
1219	fn remove_pending_child(1544	fn remove_pending_child(
1220		target: (CollectionId, TokenId),1545		target: (CollectionId, TokenId),
1221		child: (RmrkCollectionId, RmrkNftId),1546		child: (RmrkCollectionId, RmrkNftId),
1222	) -> DispatchResult {1547	) -> DispatchResult {
1223		Self::mutate_pending_child(target, |pending_children| {1548		Self::mutate_pending_children(target, |pending_children| {
1224			pending_children.remove(&child);1549			pending_children.remove(&child);
1225		})1550		})
1226	}1551	}
12271552
1228	fn mutate_pending_child(1553	/// Apply a mutation to the property of a token containing sent tokens
1554	/// that are currently pending acceptance.
1555	fn mutate_pending_children(
1229		(target_collection_id, target_nft_id): (CollectionId, TokenId),1556		(target_collection_id, target_nft_id): (CollectionId, TokenId),
1230		f: impl FnOnce(&mut PendingChildrenSet),1557		f: impl FnOnce(&mut PendingChildrenSet),
1231	) -> DispatchResult {1558	) -> DispatchResult {
1232		<PalletNft<T>>::try_mutate_token_aux_property(1559		<PalletNft<T>>::try_mutate_token_aux_property(
1233			target_collection_id,1560			target_collection_id,
1234			target_nft_id,1561			target_nft_id,
1235			PropertyScope::Rmrk,1562			RMRK_SCOPE,
1236			Self::rmrk_property_key(PendingChildren)?,1563			Self::get_scoped_property_key(PendingChildren)?,
1237			|pending_children| -> DispatchResult {1564			|pending_children| -> DispatchResult {
1238				let mut map = match pending_children {1565				let mut map = match pending_children {
1239					Some(map) => Self::decode_property(map)?,1566					Some(map) => Self::decode_property_value(map)?,
1240					None => PendingChildrenSet::new(),1567					None => PendingChildrenSet::new(),
1241				};1568				};
12421569
1243				f(&mut map);1570				f(&mut map);
12441571
1245				*pending_children = Some(Self::encode_property(&map)?);1572				*pending_children = Some(Self::encode_property_value(&map)?);
12461573
1247				Ok(())1574				Ok(())
1248			},1575			},
1249		)1576		)
1250	}1577	}
12511578
1579	/// Get an iterator from a token's property containing tokens sent to it
1580	/// that are currently pending acceptance.
1252	fn iterate_pending_children(1581	fn iterate_pending_children(
1253		collection_id: CollectionId,1582		collection_id: CollectionId,
1254		nft_id: TokenId,1583		nft_id: TokenId,
1255	) -> Result<impl Iterator<Item = PendingChild>, DispatchError> {1584	) -> Result<impl Iterator<Item = PendingChild>, DispatchError> {
1256		let property = <PalletNft<T>>::token_aux_property((1585		let property = <PalletNft<T>>::token_aux_property((
1257			collection_id,1586			collection_id,
1258			nft_id,1587			nft_id,
1259			PropertyScope::Rmrk,1588			RMRK_SCOPE,
1260			Self::rmrk_property_key(PendingChildren)?,1589			Self::get_scoped_property_key(PendingChildren)?,
1261		));1590		));
12621591
1263		let pending_children = match property {1592		let pending_children = match property {
1264			Some(map) => Self::decode_property(&map)?,1593			Some(map) => Self::decode_property_value(&map)?,
1265			None => PendingChildrenSet::new(),1594			None => PendingChildrenSet::new(),
1266		};1595		};
12671596
1268		Ok(pending_children.into_iter())1597		Ok(pending_children.into_iter())
1269	}1598	}
12701599
1600	/// Get incremented resource ID from within an NFT's properties and store the new latest ID.
1601	/// Thus, the returned resource ID should be used.
1602	///
1603	/// Resource IDs are unique only across an NFT.
1271	fn acquire_next_resource_id(1604	fn acquire_next_resource_id(
1272		collection_id: CollectionId,1605		collection_id: CollectionId,
1273		nft_id: TokenId,1606		nft_id: TokenId,
1282		<PalletNft<T>>::set_scoped_token_property(1615		<PalletNft<T>>::set_scoped_token_property(
1283			collection_id,1616			collection_id,
1284			nft_id,1617			nft_id,
1285			PropertyScope::Rmrk,1618			RMRK_SCOPE,
1286			Self::rmrk_property(NextResourceId, &next_id)?,1619			Self::encode_rmrk_property(NextResourceId, &next_id)?,
1287		)?;1620		)?;
12881621
1289		Ok(resource_id)1622		Ok(resource_id)
1290	}1623	}
12911624
1625	/// Create and add a resource for a regular NFT, mark it as pending if the sender
1626	/// is not the token owner. The sender must be the collection owner.
1292	fn resource_add(1627	fn resource_add(
1293		sender: T::AccountId,1628		sender: T::AccountId,
1294		collection_id: CollectionId,1629		collection_id: CollectionId,
1319		<PalletNft<T>>::try_mutate_token_aux_property(1654		<PalletNft<T>>::try_mutate_token_aux_property(
1320			collection_id,1655			collection_id,
1321			nft_id,1656			nft_id,
1322			PropertyScope::Rmrk,1657			RMRK_SCOPE,
1323			Self::rmrk_property_key(ResourceId(id))?,1658			Self::get_scoped_property_key(ResourceId(id))?,
1324			|value| -> DispatchResult {1659			|value| -> DispatchResult {
1325				*value = Some(Self::encode_property(&resource_info)?);1660				*value = Some(Self::encode_property_value(&resource_info)?);
13261661
1327				Ok(())1662				Ok(())
1328			},1663			},
1331		Ok(id)1666		Ok(id)
1332	}1667	}
13331668
1669	/// Designate a resource for erasure from an NFT, and remove it if the sender is the token owner.
1670	/// The sender must be the collection owner.
1334	fn resource_remove(1671	fn resource_remove(
1335		sender: T::AccountId,1672		sender: T::AccountId,
1336		collection_id: CollectionId,1673		collection_id: CollectionId,
1341			Self::get_typed_nft_collection(collection_id, misc::CollectionType::Regular)?;1678			Self::get_typed_nft_collection(collection_id, misc::CollectionType::Regular)?;
1342		ensure!(collection.owner == sender, Error::<T>::NoPermission);1679		ensure!(collection.owner == sender, Error::<T>::NoPermission);
13431680
1344		let resource_id_key = Self::rmrk_property_key(ResourceId(resource_id))?;1681		let resource_id_key = Self::get_scoped_property_key(ResourceId(resource_id))?;
1345		let scope = PropertyScope::Rmrk;
13461682
1347		let resource = <PalletNft<T>>::token_aux_property((1683		let resource = <PalletNft<T>>::token_aux_property((
1348			collection_id,1684			collection_id,
1349			nft_id,1685			nft_id,
1350			scope,1686			RMRK_SCOPE,
1351			resource_id_key.clone(),1687			resource_id_key.clone(),
1352		))1688		))
1353		.ok_or(<Error<T>>::ResourceDoesntExist)?;1689		.ok_or(<Error<T>>::ResourceDoesntExist)?;
13541690
1355		let resource_info: RmrkResourceInfo = Self::decode_property(&resource)?;1691		let resource_info: RmrkResourceInfo = Self::decode_property_value(&resource)?;
13561692
1357		let budget = up_data_structs::budget::Value::new(NESTING_BUDGET);1693		let budget = up_data_structs::budget::Value::new(NESTING_BUDGET);
1358		let topmost_owner =1694		let topmost_owner =
1363			<PalletNft<T>>::remove_token_aux_property(1699			<PalletNft<T>>::remove_token_aux_property(
1364				collection_id,1700				collection_id,
1365				nft_id,1701				nft_id,
1366				PropertyScope::Rmrk,1702				RMRK_SCOPE,
1367				Self::rmrk_property_key(ResourceId(resource_id))?,1703				Self::get_scoped_property_key(ResourceId(resource_id))?,
1368			);1704			);
13691705
1370			if let RmrkResourceTypes::Composable(resource) = resource_info.resource {1706			if let RmrkResourceTypes::Composable(resource) = resource_info.resource {
1383		Ok(())1719		Ok(())
1384	}1720	}
13851721
1722	/// Remove a Base ID from an NFT if they are associated.
1723	/// The Base itself is deleted if the number of associated NFTs reaches 0.
1386	fn remove_associated_base_id(1724	fn remove_associated_base_id(
1387		collection_id: CollectionId,1725		collection_id: CollectionId,
1388		nft_id: TokenId,1726		nft_id: TokenId,
1391		<PalletNft<T>>::try_mutate_token_aux_property(1729		<PalletNft<T>>::try_mutate_token_aux_property(
1392			collection_id,1730			collection_id,
1393			nft_id,1731			nft_id,
1394			PropertyScope::Rmrk,1732			RMRK_SCOPE,
1395			Self::rmrk_property_key(AssociatedBases)?,1733			Self::get_scoped_property_key(AssociatedBases)?,
1396			|value| -> DispatchResult {1734			|value| -> DispatchResult {
1397				let mut bases: BasesMap = match value {1735				let mut bases: BasesMap = match value {
1398					Some(value) => Self::decode_property(value)?,1736					Some(value) => Self::decode_property_value(value)?,
1399					None => BasesMap::new(),1737					None => BasesMap::new(),
1400				};1738				};
14011739
1407					}1745					}
1408				}1746				}
14091747
1410				*value = Some(Self::encode_property(&bases)?);1748				*value = Some(Self::encode_property_value(&bases)?);
1411				Ok(())1749				Ok(())
1412			},1750			},
1413		)1751		)
1414	}1752	}
14151753
1754	/// Apply a mutation to a resource stored in the token properties of an NFT.
1416	fn try_mutate_resource_info(1755	fn try_mutate_resource_info(
1417		collection_id: CollectionId,1756		collection_id: CollectionId,
1418		nft_id: TokenId,1757		nft_id: TokenId,
1422		<PalletNft<T>>::try_mutate_token_aux_property(1761		<PalletNft<T>>::try_mutate_token_aux_property(
1423			collection_id,1762			collection_id,
1424			nft_id,1763			nft_id,
1425			PropertyScope::Rmrk,1764			RMRK_SCOPE,
1426			Self::rmrk_property_key(ResourceId(resource_id))?,1765			Self::get_scoped_property_key(ResourceId(resource_id))?,
1427			|value| match value {1766			|value| match value {
1428				Some(value) => {1767				Some(value) => {
1429					let mut resource_info: RmrkResourceInfo = Self::decode_property(value)?;1768					let mut resource_info: RmrkResourceInfo = Self::decode_property_value(value)?;
14301769
1431					f(&mut resource_info)?;1770					f(&mut resource_info)?;
14321771
1433					*value = Self::encode_property(&resource_info)?;1772					*value = Self::encode_property_value(&resource_info)?;
14341773
1435					Ok(())1774					Ok(())
1436				}1775				}
1439		)1778		)
1440	}1779	}
14411780
1781	/// Change the owner of an NFT collection, ensuring that the sender is the current owner.
1442	fn change_collection_owner(1782	fn change_collection_owner(
1443		collection_id: CollectionId,1783		collection_id: CollectionId,
1444		collection_type: misc::CollectionType,1784		collection_type: misc::CollectionType,
1454		collection.save()1794		collection.save()
1455	}1795	}
14561796
1797	/// Ensure that an account is the collection owner/issuer, return an error if not.
1457	pub fn check_collection_owner(1798	pub fn check_collection_owner(
1458		collection: &NonfungibleHandle<T>,1799		collection: &NonfungibleHandle<T>,
1459		account: &T::CrossAccountId,1800		account: &T::CrossAccountId,
1463			.map_err(Self::map_unique_err_to_proxy)1804			.map_err(Self::map_unique_err_to_proxy)
1464	}1805	}
14651806
1807	/// Get the latest yet-unused RMRK collection index from the storage.
1466	pub fn last_collection_idx() -> RmrkCollectionId {1808	pub fn last_collection_idx() -> RmrkCollectionId {
1467		<CollectionIndex<T>>::get()1809		<CollectionIndex<T>>::get()
1468	}1810	}
14691811
1812	/// Get a mapping from a RMRK collection ID to its corresponding Unique collection ID.
1470	pub fn unique_collection_id(1813	pub fn unique_collection_id(
1471		rmrk_collection_id: RmrkCollectionId,1814		rmrk_collection_id: RmrkCollectionId,
1472	) -> Result<CollectionId, DispatchError> {1815	) -> Result<CollectionId, DispatchError> {
1473		<UniqueCollectionId<T>>::try_get(rmrk_collection_id)1816		<UniqueCollectionId<T>>::try_get(rmrk_collection_id)
1474			.map_err(|_| <Error<T>>::CollectionUnknown.into())1817			.map_err(|_| <Error<T>>::CollectionUnknown.into())
1475	}1818	}
14761819
1820	/// Get a mapping from a Unique collection ID to its RMRK collection ID counterpart, if it exists.
1477	pub fn rmrk_collection_id(1821	pub fn rmrk_collection_id(
1478		unique_collection_id: CollectionId,1822		unique_collection_id: CollectionId,
1479	) -> Result<RmrkCollectionId, DispatchError> {1823	) -> Result<RmrkCollectionId, DispatchError> {
1480		Self::get_collection_property_decoded(unique_collection_id, RmrkInternalCollectionId)1824		Self::get_collection_property_decoded(unique_collection_id, RmrkInternalCollectionId)
1481	}1825	}
14821826
1827	/// Fetch a Unique NFT collection.
1483	pub fn get_nft_collection(1828	pub fn get_nft_collection(
1484		collection_id: CollectionId,1829		collection_id: CollectionId,
1485	) -> Result<NonfungibleHandle<T>, DispatchError> {1830	) -> Result<NonfungibleHandle<T>, DispatchError> {
1492		}1837		}
1493	}1838	}
14941839
1840	/// Check if an NFT collection with such an ID exists.
1495	pub fn collection_exists(collection_id: CollectionId) -> bool {1841	pub fn collection_exists(collection_id: CollectionId) -> bool {
1496		<CollectionHandle<T>>::try_get(collection_id).is_ok()1842		<CollectionHandle<T>>::try_get(collection_id).is_ok()
1497	}1843	}
14981844
1845	/// Fetch and decode a RMRK-scoped collection property value in bytes.
1499	pub fn get_collection_property(1846	pub fn get_collection_property(
1500		collection_id: CollectionId,1847		collection_id: CollectionId,
1501		key: RmrkProperty,1848		key: RmrkProperty,
1502	) -> Result<PropertyValue, DispatchError> {1849	) -> Result<PropertyValue, DispatchError> {
1503		let collection_property = <PalletCommon<T>>::collection_properties(collection_id)1850		let collection_property = <PalletCommon<T>>::collection_properties(collection_id)
1504			.get(&Self::rmrk_property_key(key)?)1851			.get(&Self::get_scoped_property_key(key)?)
1505			.ok_or(<Error<T>>::CollectionUnknown)?1852			.ok_or(<Error<T>>::CollectionUnknown)?
1506			.clone();1853			.clone();
15071854
1508		Ok(collection_property)1855		Ok(collection_property)
1509	}1856	}
15101857
1858	/// Fetch a RMRK-scoped collection property and decode it from bytes into an appropriate type.
1511	pub fn get_collection_property_decoded<V: Decode>(1859	pub fn get_collection_property_decoded<V: Decode>(
1512		collection_id: CollectionId,1860		collection_id: CollectionId,
1513		key: RmrkProperty,1861		key: RmrkProperty,
1514	) -> Result<V, DispatchError> {1862	) -> Result<V, DispatchError> {
1515		Self::decode_property(&Self::get_collection_property(collection_id, key)?)1863		Self::decode_property_value(&Self::get_collection_property(collection_id, key)?)
1516	}1864	}
15171865
1866	/// Get the type of a collection stored as a scoped property.
1867	///
1868	/// RMRK Core proxy differentiates between regular collections as well as RMRK Bases as collections.
1518	pub fn get_collection_type(1869	pub fn get_collection_type(
1519		collection_id: CollectionId,1870		collection_id: CollectionId,
1520	) -> Result<misc::CollectionType, DispatchError> {1871	) -> Result<misc::CollectionType, DispatchError> {
1527		})1878		})
1528	}1879	}
15291880
1881	/// Ensure that the type of the collection equals the provided type,
1882	/// otherwise return an error.
1530	pub fn ensure_collection_type(1883	pub fn ensure_collection_type(
1531		collection_id: CollectionId,1884		collection_id: CollectionId,
1532		collection_type: misc::CollectionType,1885		collection_type: misc::CollectionType,
1540		Ok(())1893		Ok(())
1541	}1894	}
15421895
1896	/// Fetch an NFT collection, but make sure it has the appropriate type.
1543	pub fn get_typed_nft_collection(1897	pub fn get_typed_nft_collection(
1544		collection_id: CollectionId,1898		collection_id: CollectionId,
1545		collection_type: misc::CollectionType,1899		collection_type: misc::CollectionType,
1549		Self::get_nft_collection(collection_id)1903		Self::get_nft_collection(collection_id)
1550	}1904	}
15511905
1906	/// Same as [`get_typed_nft_collection`](crate::pallet::Pallet::get_typed_nft_collection),
1907	/// but also return the Unique collection ID.
1552	pub fn get_typed_nft_collection_mapped(1908	pub fn get_typed_nft_collection_mapped(
1553		rmrk_collection_id: RmrkCollectionId,1909		rmrk_collection_id: RmrkCollectionId,
1554		collection_type: misc::CollectionType,1910		collection_type: misc::CollectionType,
1563		Ok((collection, unique_collection_id))1919		Ok((collection, unique_collection_id))
1564	}1920	}
15651921
1922	/// Fetch and decode a RMRK-scoped NFT property value in bytes.
1566	pub fn get_nft_property(1923	pub fn get_nft_property(
1567		collection_id: CollectionId,1924		collection_id: CollectionId,
1568		nft_id: TokenId,1925		nft_id: TokenId,
1569		key: RmrkProperty,1926		key: RmrkProperty,
1570	) -> Result<PropertyValue, DispatchError> {1927	) -> Result<PropertyValue, DispatchError> {
1571		let nft_property = <PalletNft<T>>::token_properties((collection_id, nft_id))1928		let nft_property = <PalletNft<T>>::token_properties((collection_id, nft_id))
1572			.get(&Self::rmrk_property_key(key)?)1929			.get(&Self::get_scoped_property_key(key)?)
1573			.ok_or(<Error<T>>::RmrkPropertyIsNotFound)?1930			.ok_or(<Error<T>>::RmrkPropertyIsNotFound)?
1574			.clone();1931			.clone();
15751932
1576		Ok(nft_property)1933		Ok(nft_property)
1577	}1934	}
15781935
1936	/// Fetch a RMRK-scoped NFT property and decode it from bytes into an appropriate type.
1579	pub fn get_nft_property_decoded<V: Decode>(1937	pub fn get_nft_property_decoded<V: Decode>(
1580		collection_id: CollectionId,1938		collection_id: CollectionId,
1581		nft_id: TokenId,1939		nft_id: TokenId,
1582		key: RmrkProperty,1940		key: RmrkProperty,
1583	) -> Result<V, DispatchError> {1941	) -> Result<V, DispatchError> {
1584		Self::decode_property(&Self::get_nft_property(collection_id, nft_id, key)?)1942		Self::decode_property_value(&Self::get_nft_property(collection_id, nft_id, key)?)
1585	}1943	}
15861944
1945	/// Check that an NFT exists.
1587	pub fn nft_exists(collection_id: CollectionId, nft_id: TokenId) -> bool {1946	pub fn nft_exists(collection_id: CollectionId, nft_id: TokenId) -> bool {
1588		<TokenData<T>>::contains_key((collection_id, nft_id))1947		<TokenData<T>>::contains_key((collection_id, nft_id))
1589	}1948	}
15901949
1950	/// Get the type of an NFT stored as a scoped property.
1951	///
1952	/// RMRK Core proxy differentiates between regular NFTs, and RMRK Parts and Themes.
1591	pub fn get_nft_type(1953	pub fn get_nft_type(
1592		collection_id: CollectionId,1954		collection_id: CollectionId,
1593		token_id: TokenId,1955		token_id: TokenId,
1596			.map_err(|_| <Error<T>>::NoAvailableNftId.into())1958			.map_err(|_| <Error<T>>::NoAvailableNftId.into())
1597	}1959	}
15981960
1961	/// Ensure that the type of the NFT equals the provided type, otherwise return an error.
1599	pub fn ensure_nft_type(1962	pub fn ensure_nft_type(
1600		collection_id: CollectionId,1963		collection_id: CollectionId,
1601		token_id: TokenId,1964		token_id: TokenId,
1607		Ok(())1970		Ok(())
1608	}1971	}
16091972
1973	/// Ensure that an account is the owner of the token, either directly
1974	/// or at the top of the nesting hierarchy; return an error if it is not.
1610	pub fn ensure_nft_owner(1975	pub fn ensure_nft_owner(
1611		collection_id: CollectionId,1976		collection_id: CollectionId,
1612		token_id: TokenId,1977		token_id: TokenId,
1627		Ok(())1992		Ok(())
1628	}1993	}
16291994
1995	/// Fetch non-scoped properties of a collection or a token that match the filter keys supplied,
1996	/// or, if None are provided, return all non-scoped properties.
1630	pub fn filter_user_properties<Key, Value, R, Mapper>(1997	pub fn filter_user_properties<Key, Value, R, Mapper>(
1631		collection_id: CollectionId,1998		collection_id: CollectionId,
1632		token_id: Option<TokenId>,1999		token_id: Option<TokenId>,
1672			})2039			})
1673	}2040	}
16742041
2042	/// Get all non-scoped properties from a collection or a token, and apply some transformation,
2043	/// supplied by `mapper`, to each key-value pair.
1675	pub fn iterate_user_properties<Key, Value, R, Mapper>(2044	pub fn iterate_user_properties<Key, Value, R, Mapper>(
1676		collection_id: CollectionId,2045		collection_id: CollectionId,
1677		token_id: Option<TokenId>,2046		token_id: Option<TokenId>,
1699		Ok(properties)2068		Ok(properties)
1700	}2069	}
17012070
2071	/// Match Unique errors to RMRK's own and return the RMRK error if a match is successful.
1702	fn map_unique_err_to_proxy(err: DispatchError) -> DispatchError {2072	fn map_unique_err_to_proxy(err: DispatchError) -> DispatchError {
1703		map_unique_err_to_proxy! {2073		map_unique_err_to_proxy! {
1704			match err {2074			match err {