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Merge pull request #965 from novasamatech/develop
v7.7.4
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120 changes: 120 additions & 0 deletions
120
novawallet/Modules/Staking/Operations/ParachainStaking/ParaStkPreferredCollatorFactory.swift
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,120 @@ | ||
| import Foundation | ||
| import SubstrateSdk | ||
| import RobinHood | ||
|
|
||
| protocol ParaStkPreferredCollatorFactoryProtocol { | ||
| func createPreferredCollatorWrapper() -> CompoundOperationWrapper<DisplayAddress?> | ||
| } | ||
|
|
||
| final class ParaStkPreferredCollatorFactory { | ||
| let chain: ChainModel | ||
| let connection: JSONRPCEngine | ||
| let runtimeService: RuntimeCodingServiceProtocol | ||
| let identityOperationFactory: IdentityOperationFactoryProtocol | ||
| let collatorService: ParachainStakingCollatorServiceProtocol | ||
| let rewardService: ParaStakingRewardCalculatorServiceProtocol | ||
| let operationQueue: OperationQueue | ||
|
|
||
| init( | ||
| chain: ChainModel, | ||
| connection: JSONRPCEngine, | ||
| runtimeService: RuntimeCodingServiceProtocol, | ||
| collatorService: ParachainStakingCollatorServiceProtocol, | ||
| rewardService: ParaStakingRewardCalculatorServiceProtocol, | ||
| identityOperationFactory: IdentityOperationFactoryProtocol, | ||
| operationQueue: OperationQueue | ||
| ) { | ||
| self.chain = chain | ||
| self.connection = connection | ||
| self.runtimeService = runtimeService | ||
| self.rewardService = rewardService | ||
| self.collatorService = collatorService | ||
| self.identityOperationFactory = identityOperationFactory | ||
| self.operationQueue = operationQueue | ||
| } | ||
|
|
||
| private func createResultWrapper( | ||
| dependingOn mergeOperation: BaseOperation<AccountId?> | ||
| ) -> CompoundOperationWrapper<DisplayAddress?> { | ||
| OperationCombiningService<DisplayAddress?>.compoundNonOptionalWrapper( | ||
| operationManager: OperationManager(operationQueue: operationQueue) | ||
| ) { | ||
| let optAccountId = try mergeOperation.extractNoCancellableResultData() | ||
|
|
||
| guard let accountId = optAccountId else { | ||
| return CompoundOperationWrapper.createWithResult(nil) | ||
| } | ||
|
|
||
| let identityWrapper = self.identityOperationFactory.createIdentityWrapper( | ||
| for: { [accountId] }, | ||
| engine: self.connection, | ||
| runtimeService: self.runtimeService, | ||
| chainFormat: self.chain.chainFormat | ||
| ) | ||
|
|
||
| let mappingOperation = ClosureOperation<DisplayAddress?> { | ||
| let identities = try identityWrapper.targetOperation.extractNoCancellableResultData() | ||
| let address = try accountId.toAddress(using: self.chain.chainFormat) | ||
| let name = identities[address]?.displayName | ||
|
|
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| return DisplayAddress(address: address, username: name ?? "") | ||
| } | ||
|
|
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| mappingOperation.addDependency(identityWrapper.targetOperation) | ||
|
|
||
| return CompoundOperationWrapper( | ||
| targetOperation: mappingOperation, | ||
| dependencies: identityWrapper.allOperations | ||
| ) | ||
| } | ||
| } | ||
| } | ||
|
|
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| extension ParaStkPreferredCollatorFactory: ParaStkPreferredCollatorFactoryProtocol { | ||
| func createPreferredCollatorWrapper() -> CompoundOperationWrapper<DisplayAddress?> { | ||
| let preferredCollators = StakingConstants.preferredValidatorIds(for: chain) | ||
|
|
||
| guard !preferredCollators.isEmpty else { | ||
| return CompoundOperationWrapper.createWithResult(nil) | ||
| } | ||
|
|
||
| let collatorsSet = Set(preferredCollators) | ||
|
|
||
| let collatorsOperation = collatorService.fetchInfoOperation() | ||
| let rewardOperation = rewardService.fetchCalculatorOperation() | ||
|
|
||
| let mergeOperation = ClosureOperation<AccountId?> { | ||
| let collators = try collatorsOperation.extractNoCancellableResultData().collators | ||
| let rewardsCalculator = try rewardOperation.extractNoCancellableResultData() | ||
|
|
||
| let optCollator = collators | ||
| .filter { collatorsSet.contains($0.accountId) } | ||
| .sorted { col1, col2 in | ||
| let optApr1 = try? rewardsCalculator.calculateAPR(for: col1.accountId) | ||
| let optApr2 = try? rewardsCalculator.calculateAPR(for: col2.accountId) | ||
|
|
||
| if let apr1 = optApr1, let apr2 = optApr2 { | ||
| return apr1 > apr2 | ||
| } else if optApr1 != nil { | ||
| return true | ||
| } else { | ||
| return false | ||
| } | ||
| } | ||
| .first | ||
|
|
||
| return optCollator?.accountId | ||
| } | ||
|
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| mergeOperation.addDependency(collatorsOperation) | ||
| mergeOperation.addDependency(rewardOperation) | ||
|
|
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| let resultWrapper = createResultWrapper(dependingOn: mergeOperation) | ||
| resultWrapper.addDependency(operations: [mergeOperation]) | ||
|
|
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| let dependencies = [collatorsOperation, rewardOperation] + [mergeOperation] + | ||
| resultWrapper.dependencies | ||
|
|
||
| return CompoundOperationWrapper(targetOperation: resultWrapper.targetOperation, dependencies: dependencies) | ||
| } | ||
| } |
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