git.delta.rocks / unique-network / refs/commits / 424362fb52a4

1// Copyright 2019-2022 Unique Network (Gibraltar) Ltd.2// This file is part of Unique Network.34// Unique Network is free software: you can redistribute it and/or modify5// it under the terms of the GNU General Public License as published by6// the Free Software Foundation, either version 3 of the License, or7// (at your option) any later version.89// Unique Network is distributed in the hope that it will be useful,10// but WITHOUT ANY WARRANTY; without even the implied warranty of11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the12// GNU General Public License for more details.1314// You should have received a copy of the GNU General Public License15// along with Unique Network. If not, see <http://www.gnu.org/licenses/>.1617// Original License18use std::sync::Arc;1920use codec::{Decode, Encode};21use jsonrpsee::{22	core::{RpcResult as Result},23	proc_macros::rpc,24};25use anyhow::anyhow;26use sp_runtime::traits::{AtLeast32BitUnsigned, Member};27use up_data_structs::{28	RpcCollection, CollectionId, CollectionStats, CollectionLimits, TokenId, Property,29	PropertyKeyPermission, TokenData, TokenChild,30};31use sp_api::{BlockId, BlockT, ProvideRuntimeApi, ApiExt};32use sp_blockchain::HeaderBackend;33use up_rpc::UniqueApi as UniqueRuntimeApi;34use app_promotion_rpc::AppPromotionApi as AppPromotionRuntimeApi;3536// RMRK37use rmrk_rpc::RmrkApi as RmrkRuntimeApi;38use up_data_structs::{39	RmrkCollectionId, RmrkNftId, RmrkBaseId, RmrkNftChild, RmrkThemeName, RmrkResourceId,40};4142pub use app_promotion_unique_rpc::AppPromotionApiServer;43pub use rmrk_unique_rpc::RmrkApiServer;4445#[rpc(server)]46#[async_trait]47pub trait UniqueApi<BlockHash, CrossAccountId, AccountId> {48	/// Get tokens owned by account.49	#[method(name = "unique_accountTokens")]50	fn account_tokens(51		&self,52		collection: CollectionId,53		account: CrossAccountId,54		at: Option<BlockHash>,55	) -> Result<Vec<TokenId>>;5657	/// Get tokens contained within a collection.58	#[method(name = "unique_collectionTokens")]59	fn collection_tokens(60		&self,61		collection: CollectionId,62		at: Option<BlockHash>,63	) -> Result<Vec<TokenId>>;6465	/// Check if the token exists.66	#[method(name = "unique_tokenExists")]67	fn token_exists(68		&self,69		collection: CollectionId,70		token: TokenId,71		at: Option<BlockHash>,72	) -> Result<bool>;7374	/// Get the token owner.75	#[method(name = "unique_tokenOwner")]76	fn token_owner(77		&self,78		collection: CollectionId,79		token: TokenId,80		at: Option<BlockHash>,81	) -> Result<Option<CrossAccountId>>;8283	/// Returns 10 tokens owners in no particular order.84	#[method(name = "unique_tokenOwners")]85	fn token_owners(86		&self,87		collection: CollectionId,88		token: TokenId,89		at: Option<BlockHash>,90	) -> Result<Vec<CrossAccountId>>;9192	/// Get the topmost token owner in the hierarchy of a possibly nested token.93	#[method(name = "unique_topmostTokenOwner")]94	fn topmost_token_owner(95		&self,96		collection: CollectionId,97		token: TokenId,98		at: Option<BlockHash>,99	) -> Result<Option<CrossAccountId>>;100101	/// Get tokens nested directly into the token.102	#[method(name = "unique_tokenChildren")]103	fn token_children(104		&self,105		collection: CollectionId,106		token: TokenId,107		at: Option<BlockHash>,108	) -> Result<Vec<TokenChild>>;109110	/// Get collection properties, optionally limited to the provided keys.111	#[method(name = "unique_collectionProperties")]112	fn collection_properties(113		&self,114		collection: CollectionId,115		keys: Option<Vec<String>>,116		at: Option<BlockHash>,117	) -> Result<Vec<Property>>;118119	/// Get token properties, optionally limited to the provided keys.120	#[method(name = "unique_tokenProperties")]121	fn token_properties(122		&self,123		collection: CollectionId,124		token_id: TokenId,125		keys: Option<Vec<String>>,126		at: Option<BlockHash>,127	) -> Result<Vec<Property>>;128129	/// Get property permissions, optionally limited to the provided keys.130	#[method(name = "unique_propertyPermissions")]131	fn property_permissions(132		&self,133		collection: CollectionId,134		keys: Option<Vec<String>>,135		at: Option<BlockHash>,136	) -> Result<Vec<PropertyKeyPermission>>;137138	/// Get token data, including properties, optionally limited to the provided keys, and total pieces for an RFT.139	#[method(name = "unique_tokenData")]140	fn token_data(141		&self,142		collection: CollectionId,143		token_id: TokenId,144		keys: Option<Vec<String>>,145		at: Option<BlockHash>,146	) -> Result<TokenData<CrossAccountId>>;147148	/// Get the amount of distinctive tokens present in a collection.149	#[method(name = "unique_totalSupply")]150	fn total_supply(&self, collection: CollectionId, at: Option<BlockHash>) -> Result<u32>;151152	/// Get the amount of any user tokens owned by an account.153	#[method(name = "unique_accountBalance")]154	fn account_balance(155		&self,156		collection: CollectionId,157		account: CrossAccountId,158		at: Option<BlockHash>,159	) -> Result<u32>;160161	/// Get the amount of a specific token owned by an account.162	#[method(name = "unique_balance")]163	fn balance(164		&self,165		collection: CollectionId,166		account: CrossAccountId,167		token: TokenId,168		at: Option<BlockHash>,169	) -> Result<String>;170171	/// Get the amount of currently possible sponsored transactions on a token for the fee to be taken off a sponsor.172	#[method(name = "unique_allowance")]173	fn allowance(174		&self,175		collection: CollectionId,176		sender: CrossAccountId,177		spender: CrossAccountId,178		token: TokenId,179		at: Option<BlockHash>,180	) -> Result<String>;181182	/// Get the list of admin accounts of a collection.183	#[method(name = "unique_adminlist")]184	fn adminlist(185		&self,186		collection: CollectionId,187		at: Option<BlockHash>,188	) -> Result<Vec<CrossAccountId>>;189190	/// Get the list of accounts allowed to operate within a collection.191	#[method(name = "unique_allowlist")]192	fn allowlist(193		&self,194		collection: CollectionId,195		at: Option<BlockHash>,196	) -> Result<Vec<CrossAccountId>>;197198	/// Check if a user is allowed to operate within a collection.199	#[method(name = "unique_allowed")]200	fn allowed(201		&self,202		collection: CollectionId,203		user: CrossAccountId,204		at: Option<BlockHash>,205	) -> Result<bool>;206207	/// Get the last token ID created in a collection.208	#[method(name = "unique_lastTokenId")]209	fn last_token_id(&self, collection: CollectionId, at: Option<BlockHash>) -> Result<TokenId>;210211	/// Get collection info by the specified ID.212	#[method(name = "unique_collectionById")]213	fn collection_by_id(214		&self,215		collection: CollectionId,216		at: Option<BlockHash>,217	) -> Result<Option<RpcCollection<AccountId>>>;218219	/// Get chain stats about collections.220	#[method(name = "unique_collectionStats")]221	fn collection_stats(&self, at: Option<BlockHash>) -> Result<CollectionStats>;222223	/// Get the number of blocks until sponsoring a transaction is available.224	#[method(name = "unique_nextSponsored")]225	fn next_sponsored(226		&self,227		collection: CollectionId,228		account: CrossAccountId,229		token: TokenId,230		at: Option<BlockHash>,231	) -> Result<Option<u64>>;232233	/// Get effective collection limits. If not explicitly set, get the chain defaults.234	#[method(name = "unique_effectiveCollectionLimits")]235	fn effective_collection_limits(236		&self,237		collection_id: CollectionId,238		at: Option<BlockHash>,239	) -> Result<Option<CollectionLimits>>;240241	/// Get the total amount of pieces of an RFT.242	#[method(name = "unique_totalPieces")]243	fn total_pieces(244		&self,245		collection_id: CollectionId,246		token_id: TokenId,247		at: Option<BlockHash>,248	) -> Result<Option<String>>;249}250251mod app_promotion_unique_rpc {252	use super::*;253254	#[rpc(server)]255	#[async_trait]256	pub trait AppPromotionApi<BlockHash, BlockNumber, CrossAccountId, AccountId> {257		/// Returns the total amount of staked tokens.258		#[method(name = "appPromotion_totalStaked")]259		fn total_staked(260			&self,261			staker: Option<CrossAccountId>,262			at: Option<BlockHash>,263		) -> Result<String>;264265		///Returns the total amount of staked tokens per block when staked.266		#[method(name = "appPromotion_totalStakedPerBlock")]267		fn total_staked_per_block(268			&self,269			staker: CrossAccountId,270			at: Option<BlockHash>,271		) -> Result<Vec<(BlockNumber, String)>>;272273		/// Returns the total amount of tokens pending withdrawal from staking.274		#[method(name = "appPromotion_pendingUnstake")]275		fn pending_unstake(276			&self,277			staker: Option<CrossAccountId>,278			at: Option<BlockHash>,279		) -> Result<String>;280281		/// Returns the total amount of tokens pending withdrawal from staking per block.282		#[method(name = "appPromotion_pendingUnstakePerBlock")]283		fn pending_unstake_per_block(284			&self,285			staker: CrossAccountId,286			at: Option<BlockHash>,287		) -> Result<Vec<(BlockNumber, String)>>;288	}289}290291mod rmrk_unique_rpc {292	use super::*;293294	#[rpc(server)]295	#[async_trait]296	pub trait RmrkApi<297		BlockHash,298		AccountId,299		CollectionInfo,300		NftInfo,301		ResourceInfo,302		PropertyInfo,303		BaseInfo,304		PartType,305		Theme,306	>307	{308		/// Get the latest created collection ID.309		#[method(name = "rmrk_lastCollectionIdx")]310		fn last_collection_idx(&self, at: Option<BlockHash>) -> Result<RmrkCollectionId>;311312		/// Get collection info by ID.313		#[method(name = "rmrk_collectionById")]314		fn collection_by_id(315			&self,316			id: RmrkCollectionId,317			at: Option<BlockHash>,318		) -> Result<Option<CollectionInfo>>;319320		/// Get NFT info by collection and NFT IDs.321		#[method(name = "rmrk_nftById")]322		fn nft_by_id(323			&self,324			collection_id: RmrkCollectionId,325			nft_id: RmrkNftId,326			at: Option<BlockHash>,327		) -> Result<Option<NftInfo>>;328329		/// Get tokens owned by an account in a collection.330		#[method(name = "rmrk_accountTokens")]331		fn account_tokens(332			&self,333			account_id: AccountId,334			collection_id: RmrkCollectionId,335			at: Option<BlockHash>,336		) -> Result<Vec<RmrkNftId>>;337338		/// Get tokens nested in an NFT - its direct children (not the children's children).339		#[method(name = "rmrk_nftChildren")]340		fn nft_children(341			&self,342			collection_id: RmrkCollectionId,343			nft_id: RmrkNftId,344			at: Option<BlockHash>,345		) -> Result<Vec<RmrkNftChild>>;346347		/// Get collection properties, created by the user - not the proxy-specific properties.348		#[method(name = "rmrk_collectionProperties")]349		fn collection_properties(350			&self,351			collection_id: RmrkCollectionId,352			filter_keys: Option<Vec<String>>,353			at: Option<BlockHash>,354		) -> Result<Vec<PropertyInfo>>;355356		/// Get NFT properties, created by the user - not the proxy-specific properties.357		#[method(name = "rmrk_nftProperties")]358		fn nft_properties(359			&self,360			collection_id: RmrkCollectionId,361			nft_id: RmrkNftId,362			filter_keys: Option<Vec<String>>,363			at: Option<BlockHash>,364		) -> Result<Vec<PropertyInfo>>;365366		/// Get data of resources of an NFT.367		#[method(name = "rmrk_nftResources")]368		fn nft_resources(369			&self,370			collection_id: RmrkCollectionId,371			nft_id: RmrkNftId,372			at: Option<BlockHash>,373		) -> Result<Vec<ResourceInfo>>;374375		/// Get the priority of a resource in an NFT.376		#[method(name = "rmrk_nftResourcePriority")]377		fn nft_resource_priority(378			&self,379			collection_id: RmrkCollectionId,380			nft_id: RmrkNftId,381			resource_id: RmrkResourceId,382			at: Option<BlockHash>,383		) -> Result<Option<u32>>;384385		/// Get base info by its ID.386		#[method(name = "rmrk_base")]387		fn base(&self, base_id: RmrkBaseId, at: Option<BlockHash>) -> Result<Option<BaseInfo>>;388389		/// Get all parts of a base.390		#[method(name = "rmrk_baseParts")]391		fn base_parts(&self, base_id: RmrkBaseId, at: Option<BlockHash>) -> Result<Vec<PartType>>;392393		/// Get the theme names belonging to a base.394		#[method(name = "rmrk_themeNames")]395		fn theme_names(396			&self,397			base_id: RmrkBaseId,398			at: Option<BlockHash>,399		) -> Result<Vec<RmrkThemeName>>;400401		/// Get theme info, including properties, optionally limited to the provided keys.402		#[method(name = "rmrk_themes")]403		fn theme(404			&self,405			base_id: RmrkBaseId,406			theme_name: String,407			filter_keys: Option<Vec<String>>,408			at: Option<BlockHash>,409		) -> Result<Option<Theme>>;410	}411}412413macro_rules! define_struct_for_server_api {414	($name:ident) => {415		pub struct $name<C, P> {416			client: Arc<C>,417			_marker: std::marker::PhantomData<P>,418		}419420		impl<C, P> $name<C, P> {421			pub fn new(client: Arc<C>) -> Self {422				Self {423					client,424					_marker: Default::default(),425				}426			}427		}428	};429}430431define_struct_for_server_api!(Unique);432define_struct_for_server_api!(AppPromotion);433define_struct_for_server_api!(Rmrk);434435macro_rules! pass_method {436	(437		$method_name:ident(438			$($(#[map(|$map_arg:ident| $map:expr)])? $name:ident: $ty:ty),* $(,)?439		) -> $result:ty $(=> $mapper:expr)?,440		//$runtime_name:ident $(<$($lt: tt),+>)*441		$runtime_api_macro:ident442		$(; changed_in $ver:expr, $changed_method_name:ident ($($changed_name:expr), * $(,)?) => $fixer:expr)*443	) => {444		fn $method_name(445			&self,446			$(447				$name: $ty,448			)*449			at: Option<<Block as BlockT>::Hash>,450		) -> Result<$result> {451			let api = self.client.runtime_api();452			let at = BlockId::hash(at.unwrap_or_else(|| self.client.info().best_hash));453			let _api_version = if let Ok(Some(api_version)) =454				api.api_version::<$runtime_api_macro!()>(&at)455			{456				api_version457			} else {458				// unreachable for our runtime459				return Err(anyhow!("api is not available").into())460			};461462			let result = $(if _api_version < $ver {463				api.$changed_method_name(&at, $($changed_name),*).map(|r| r.map($fixer))464			} else)*465			{ api.$method_name(&at, $($((|$map_arg: $ty| $map))? ($name)),*) };466467			Ok(result468				.map_err(|e| anyhow!("unable to query: {e}"))?469				.map_err(|e| anyhow!("runtime error: {e:?}"))$(.map($mapper))??)470		}471	};472}473474macro_rules! unique_api {475	() => {476		dyn UniqueRuntimeApi<Block, CrossAccountId, AccountId>477	};478}479480macro_rules! app_promotion_api {481	() => {482		dyn AppPromotionRuntimeApi<Block, BlockNumber, CrossAccountId, AccountId>483	};484}485486macro_rules! rmrk_api {487	() => {488		dyn RmrkRuntimeApi<Block, AccountId, CollectionInfo, NftInfo, ResourceInfo, PropertyInfo, BaseInfo, PartType, Theme>489	};490}491492#[allow(deprecated)]493impl<C, Block, CrossAccountId, AccountId>494	UniqueApiServer<<Block as BlockT>::Hash, CrossAccountId, AccountId> for Unique<C, Block>495where496	Block: BlockT,497	AccountId: Decode,498	C: 'static + ProvideRuntimeApi<Block> + HeaderBackend<Block>,499	C::Api: UniqueRuntimeApi<Block, CrossAccountId, AccountId>,500	CrossAccountId: pallet_evm::account::CrossAccountId<AccountId>,501{502	pass_method!(503		account_tokens(collection: CollectionId, account: CrossAccountId) -> Vec<TokenId>, unique_api504	);505	pass_method!(506		collection_tokens(collection: CollectionId) -> Vec<TokenId>, unique_api507	);508	pass_method!(509		token_exists(collection: CollectionId, token: TokenId) -> bool, unique_api510	);511	pass_method!(512		token_owner(collection: CollectionId, token: TokenId) -> Option<CrossAccountId>, unique_api513	);514	pass_method!(515		topmost_token_owner(collection: CollectionId, token: TokenId) -> Option<CrossAccountId>, unique_api516	);517	pass_method!(token_children(collection: CollectionId, token: TokenId) -> Vec<TokenChild>, unique_api);518	pass_method!(total_supply(collection: CollectionId) -> u32, unique_api);519	pass_method!(account_balance(collection: CollectionId, account: CrossAccountId) -> u32, unique_api);520	pass_method!(balance(collection: CollectionId, account: CrossAccountId, token: TokenId) -> String => |v| v.to_string(), unique_api);521	pass_method!(522		allowance(collection: CollectionId, sender: CrossAccountId, spender: CrossAccountId, token: TokenId) -> String => |v| v.to_string(),523		unique_api524	);525526	pass_method!(collection_properties(527		collection: CollectionId,528529		#[map(|keys| string_keys_to_bytes_keys(keys))]530		keys: Option<Vec<String>>531	) -> Vec<Property>, unique_api);532533	pass_method!(token_properties(534		collection: CollectionId,535		token_id: TokenId,536537		#[map(|keys| string_keys_to_bytes_keys(keys))]538		keys: Option<Vec<String>>539	) -> Vec<Property>, unique_api);540541	pass_method!(property_permissions(542		collection: CollectionId,543544		#[map(|keys| string_keys_to_bytes_keys(keys))]545		keys: Option<Vec<String>>546	) -> Vec<PropertyKeyPermission>, unique_api);547548	pass_method!(token_data(549		collection: CollectionId,550		token_id: TokenId,551552		#[map(|keys| string_keys_to_bytes_keys(keys))]553		keys: Option<Vec<String>>,554	) -> TokenData<CrossAccountId>, unique_api);555556	pass_method!(adminlist(collection: CollectionId) -> Vec<CrossAccountId>, unique_api);557	pass_method!(allowlist(collection: CollectionId) -> Vec<CrossAccountId>, unique_api);558	pass_method!(allowed(collection: CollectionId, user: CrossAccountId) -> bool, unique_api);559	pass_method!(last_token_id(collection: CollectionId) -> TokenId, unique_api);560	pass_method!(collection_by_id(collection: CollectionId) -> Option<RpcCollection<AccountId>>, unique_api);561	pass_method!(collection_stats() -> CollectionStats, unique_api);562	pass_method!(next_sponsored(collection: CollectionId, account: CrossAccountId, token: TokenId) -> Option<u64>, unique_api);563	pass_method!(effective_collection_limits(collection_id: CollectionId) -> Option<CollectionLimits>, unique_api);564	pass_method!(total_pieces(collection_id: CollectionId, token_id: TokenId) -> Option<String> => |o| o.map(|number| number.to_string()) , unique_api);565	pass_method!(token_owners(collection: CollectionId, token: TokenId) -> Vec<CrossAccountId>, unique_api);566}567568impl<C, Block, BlockNumber, CrossAccountId, AccountId>569	app_promotion_unique_rpc::AppPromotionApiServer<570		<Block as BlockT>::Hash,571		BlockNumber,572		CrossAccountId,573		AccountId,574	> for AppPromotion<C, Block>575where576	Block: BlockT,577	BlockNumber: Decode + Member + AtLeast32BitUnsigned,578	AccountId: Decode,579	C: 'static + ProvideRuntimeApi<Block> + HeaderBackend<Block>,580	CrossAccountId: pallet_evm::account::CrossAccountId<AccountId>,581	C::Api: AppPromotionRuntimeApi<Block, BlockNumber, CrossAccountId, AccountId>,582{583	pass_method!(total_staked(staker: Option<CrossAccountId>) -> String => |v| v.to_string(), app_promotion_api);584	pass_method!(total_staked_per_block(staker: CrossAccountId) -> Vec<(BlockNumber, String)> =>585		|v| v586		.into_iter()587		.map(|(b, a)| (b, a.to_string()))588		.collect::<Vec<_>>(), app_promotion_api);589	pass_method!(pending_unstake(staker: Option<CrossAccountId>) -> String => |v| v.to_string(), app_promotion_api);590	pass_method!(pending_unstake_per_block(staker: CrossAccountId) -> Vec<(BlockNumber, String)> =>591		|v| v592		.into_iter()593		.map(|(b, a)| (b, a.to_string()))594		.collect::<Vec<_>>(), app_promotion_api);595}596597#[allow(deprecated)]598impl<599		C,600		Block,601		AccountId,602		CollectionInfo,603		NftInfo,604		ResourceInfo,605		PropertyInfo,606		BaseInfo,607		PartType,608		Theme,609	>610	rmrk_unique_rpc::RmrkApiServer<611		<Block as BlockT>::Hash,612		AccountId,613		CollectionInfo,614		NftInfo,615		ResourceInfo,616		PropertyInfo,617		BaseInfo,618		PartType,619		Theme,620	> for Rmrk<C, Block>621where622	C: Send + Sync + 'static + ProvideRuntimeApi<Block> + HeaderBackend<Block>,623	C::Api: RmrkRuntimeApi<624		Block,625		AccountId,626		CollectionInfo,627		NftInfo,628		ResourceInfo,629		PropertyInfo,630		BaseInfo,631		PartType,632		Theme,633	>,634	AccountId: Decode + Encode,635	CollectionInfo: Decode,636	NftInfo: Decode,637	ResourceInfo: Decode,638	PropertyInfo: Decode,639	BaseInfo: Decode,640	PartType: Decode,641	Theme: Decode,642	Block: BlockT,643{644	pass_method!(last_collection_idx() -> RmrkCollectionId, rmrk_api);645	pass_method!(collection_by_id(id: RmrkCollectionId) -> Option<CollectionInfo>, rmrk_api);646	pass_method!(nft_by_id(collection_id: RmrkCollectionId, nft_id: RmrkNftId) -> Option<NftInfo>, rmrk_api);647	pass_method!(account_tokens(account_id: AccountId, collection_id: RmrkCollectionId) -> Vec<RmrkNftId>, rmrk_api);648	pass_method!(nft_children(collection_id: RmrkCollectionId, nft_id: RmrkNftId) -> Vec<RmrkNftChild>, rmrk_api);649	pass_method!(650		collection_properties(651			collection_id: RmrkCollectionId,652653			#[map(|keys| string_keys_to_bytes_keys(keys))]654			filter_keys: Option<Vec<String>>655		) -> Vec<PropertyInfo>,656		rmrk_api657	);658	pass_method!(659		nft_properties(660			collection_id: RmrkCollectionId,661			nft_id: RmrkNftId,662663			#[map(|keys| string_keys_to_bytes_keys(keys))]664			filter_keys: Option<Vec<String>>665		) -> Vec<PropertyInfo>,666		rmrk_api667	);668	pass_method!(nft_resources(collection_id: RmrkCollectionId, nft_id: RmrkNftId) -> Vec<ResourceInfo>, rmrk_api);669	pass_method!(nft_resource_priority(collection_id: RmrkCollectionId, nft_id: RmrkNftId, resource_id: RmrkResourceId) -> Option<u32>, rmrk_api);670	pass_method!(base(base_id: RmrkBaseId) -> Option<BaseInfo>, rmrk_api);671	pass_method!(base_parts(base_id: RmrkBaseId) -> Vec<PartType>, rmrk_api);672	pass_method!(theme_names(base_id: RmrkBaseId) -> Vec<RmrkThemeName>, rmrk_api);673	pass_method!(674		theme(675			base_id: RmrkBaseId,676677			#[map(|n| n.into_bytes())]678			theme_name: String,679680			#[map(|keys| string_keys_to_bytes_keys(keys))]681			filter_keys: Option<Vec<String>>682		) -> Option<Theme>, rmrk_api);683}684685fn string_keys_to_bytes_keys(keys: Option<Vec<String>>) -> Option<Vec<Vec<u8>>> {686	keys.map(|keys| keys.into_iter().map(|key| key.into_bytes()).collect())687}