IOS 8249 bsdk krc20

BlockchainSdk/Blockchains/Kaspa/KaspaFeeMapper.swift

@@ -34,4 +34,52 @@ struct KaspaFeeMapper {
 
         return fees
     }
+
+    func mapTokenFee(mass: KaspaMassResponse, feeEstimate: KaspaFeeEstimateResponse) -> [Fee] {
+        let buckets = (
+            feeEstimate.lowBuckets
+                + feeEstimate.normalBuckets
+                + [feeEstimate.priorityBucket]
+        )
+        .sorted() // just in case, because it's not described in the documentation.
+        .suffix(3) // select the 3 largest baskets
+
+        let mass = Decimal(mass.mass)
+
+        let fees = buckets.map { bucket in
+            let feeRate = Decimal(bucket.feerate)
+            let value = mass * feeRate / blockchain.decimalValue
+            let valueRevealFeeMock = KaspaKRC20.RevealTransactionMassConstant * feeRate / blockchain.decimalValue
+            return Fee(
+                Amount(with: blockchain, value: value),
+                parameters: KaspaKRC20.RevealTransactionFeeParameter(amount: .init(with: blockchain, value: valueRevealFeeMock))
+            )
+        }
+
+        return fees
+    }
+
+    func mapTokenFee(mass: Decimal, feeEstimate: KaspaFeeEstimateResponse) -> [Fee] {
+        let buckets = (
+            feeEstimate.lowBuckets
+                + feeEstimate.normalBuckets
+                + [feeEstimate.priorityBucket]
+        )
+        .sorted() // just in case, because it's not described in the documentation.
+        .suffix(3) // select the 3 largest baskets
+
+        let mass = mass
+
+        let fees = buckets.map { bucket in
+            let feeRate = Decimal(bucket.feerate)
+            let value = mass * feeRate / blockchain.decimalValue
+            let valueRevealFeeMock = KaspaKRC20.RevealTransactionMassConstant * feeRate / blockchain.decimalValue
+            return Fee(
+                Amount(with: blockchain, value: value),
+                parameters: KaspaKRC20.RevealTransactionFeeParameter(amount: .init(with: blockchain, value: valueRevealFeeMock))
+            )
+        }
+
+        return fees
+    }
 }

BlockchainSdk/Blockchains/Kaspa/KaspaKRC20/KaspaKRC20.swift

@@ -0,0 +1,109 @@
+//
+// KaspaKRC20.swift
+// BlockchainSdk
+//
+// Created by Sergei Iakovlev on 16.10.2024
+// Copyright © 2024 Tangem AG. All rights reserved.
+//
+
+import Foundation
+
+struct KaspaIncompleteTokenTransactionStorageID: CustomStringConvertible {
+    let id: String
+
+    init(contract: String) {
+        id = "KaspaTokenIncompleteTransactions\(contract)"
+    }
+}
+
+enum KaspaKRC20 {
+    static let RevealTransactionMassConstant: Decimal = 3000
+
+    struct CommitTransction {
+        let transaction: KaspaTransaction
+        let hashes: [Data]
+        let redeemScript: KaspaKRC20.RedeemScript
+        let sourceAddress: String
+        let params: IncompleteTokenTransactionParams
+    }
+
+    struct RevealTransaction {
+        let transaction: KaspaTransaction
+        let hashes: [Data]
+        let redeemScript: KaspaKRC20.RedeemScript
+    }
+
+    struct IncompleteTokenTransactionParams: TransactionParams, Codable {
+        let transactionId: String
+        let amount: UInt64
+        let envelope: KaspaKRC20.Envelope
+
+        public init(transactionId: String, amount: UInt64, envelope: KaspaKRC20.Envelope) {
+            self.transactionId = transactionId
+            self.amount = amount
+            self.envelope = envelope
+        }
+    }
+
+    struct RevealTransactionFeeParameter: FeeParameters {
+        let amount: Amount
+    }
+
+    struct Envelope: Codable {
+        let p: String
+        let op: String
+        let amt: String
+        let to: String
+        let tick: String
+
+        init(amount: Decimal, recipient: String, ticker: String) {
+            p = "krc-20"
+            op = "transfer"
+            amt = amount.description
+            to = recipient
+            tick = ticker
+        }
+
+        var data: Data {
+            let kasplexId = "kasplex".data(using: .utf8)!
+            let kasplexIdCount = UInt8(kasplexId.count & 0xff)
+
+            let payload = "{\"amt\":\"\(amt)\",\"op\":\"\(op)\",\"p\":\"\(p)\",\"tick\":\"\(tick)\",\"to\":\"\(to)\"}".data(using: .utf8)!
+            let payloadCount = UInt8(payload.count & 0xff)
+
+            let elements = [
+                OpCode.OP_FALSE.value.data,
+                OpCode.OP_IF.value.data,
+                kasplexIdCount.data,
+                kasplexId,
+                OpCode.OP_1.value.data,
+                OpCode.OP_0.value.data,
+                OpCode.OP_0.value.data,
+                OpCode.OP_PUSHDATA1.value.data,
+                payloadCount.data,
+                payload,
+                OpCode.OP_ENDIF.value.data,
+            ]
+
+            return elements.reduce(Data(), +)
+        }
+    }
+
+    struct RedeemScript {
+        let publicKey: Data
+        let envelope: KaspaKRC20.Envelope
+
+        init(publicKey: Data, envelope: KaspaKRC20.Envelope) {
+            self.publicKey = publicKey
+            self.envelope = envelope
+        }
+
+        var data: Data {
+            return UInt8(publicKey.count & 0xff).data + publicKey + OpCode.OP_CODESEPARATOR.value.data + envelope.data
+        }
+
+        var redeemScriptHash: Data {
+            return OpCode.OP_HASH256.value.data + UInt8(32).data + data.hashBlake2b(outputLength: 32)! + OpCode.OP_EQUAL.value.data
+        }
+    }
+}

BlockchainSdk/Blockchains/Kaspa/KaspaKRC20/KaspaNetworkModelsKRC20.swift

@@ -0,0 +1,22 @@
+//
+// KaspaNetworkModelsKRC20.swift
+// BlockchainSdk
+//
+// Created by Sergei Iakovlev on 17.10.2024
+// Copyright © 2024 Tangem AG. All rights reserved.
+//
+
+import Foundation
+
+struct KaspaBalanceResponseKRC20: Codable {
+    struct Result: Codable {
+        let tick: String
+        let balance: String
+        let locked: String
+        let dec: String
+        let opScoreMod: String
+    }
+
+    let message: String
+    let result: [Result]
+}

BlockchainSdk/Blockchains/Kaspa/KaspaKRC20/KaspaNetworkProviderKRC20.swift

@@ -0,0 +1,44 @@
+//
+// KaspaNetworkProviderKRC20.swift
+// BlockchainSdk
+//
+// Created by Sergei Iakovlev on 17.10.2024
+// Copyright © 2024 Tangem AG. All rights reserved.
+//
+
+import Foundation
+import Combine
+
+class KaspaNetworkProviderKRC20: HostProvider {
+    var host: String {
+        url.hostOrUnknown
+    }
+
+    private let url: URL
+    private let provider: NetworkProvider<KaspaTargetKRC20>
+
+    init(testnet: Bool, networkConfiguration: NetworkProviderConfiguration) {
+        url = testnet ? URL("https://tn10api.kasplex.org/v1")! : URL("https://api.kasplex.org/v1/")!
+        provider = NetworkProvider<KaspaTargetKRC20>(configuration: networkConfiguration)
+    }
+
+    func balance(address: String, token: String) -> AnyPublisher<KaspaBalanceResponseKRC20, Error> {
+        requestPublisher(for: .balance(address: address, token: token))
+    }
+
+    private func requestPublisher<T: Decodable>(for request: KaspaTargetKRC20.Request) -> AnyPublisher<T, Error> {
+        let decoder = JSONDecoder()
+        decoder.keyDecodingStrategy = .convertFromSnakeCase
+
+        return provider.requestPublisher(KaspaTargetKRC20(request: request, baseURL: url))
+            .filterSuccessfulStatusAndRedirectCodes()
+            .map(T.self, using: decoder)
+            .mapError { moyaError in
+                if case .objectMapping = moyaError {
+                    return WalletError.failedToParseNetworkResponse()
+                }
+                return moyaError
+            }
+            .eraseToAnyPublisher()
+    }
+}

BlockchainSdk/Blockchains/Kaspa/KaspaKRC20/KaspaNetworkServiceKRC20.swift

@@ -0,0 +1,43 @@
+//
+// KaspaNetworkServiceKRC20.swift
+// BlockchainSdk
+//
+// Created by Sergei Iakovlev on 17.10.2024
+// Copyright © 2024 Tangem AG. All rights reserved.
+//
+
+import Foundation
+import Combine
+
+class KaspaNetworkServiceKRC20: MultiNetworkProvider {
+    let providers: [KaspaNetworkProviderKRC20]
+    var currentProviderIndex: Int = 0
+
+    private let blockchain: Blockchain
+
+    init(providers: [KaspaNetworkProviderKRC20], blockchain: Blockchain) {
+        self.providers = providers
+        self.blockchain = blockchain
+    }
+
+    func balance(address: String, tokens: [Token]) -> AnyPublisher<[Token: Result<KaspaBalanceResponseKRC20, Error>], Error> {
+        tokens
+            .publisher
+            .setFailureType(to: Error.self)
+            .withWeakCaptureOf(self)
+            .flatMap { networkService, token in
+                networkService.providerPublisher(for: { provider in
+                    provider.balance(address: address, token: token.contractAddress)
+                        .retry(2)
+                        .eraseToAnyPublisher()
+                })
+                .mapToResult()
+                .setFailureType(to: Error.self)
+                .map { (token, $0) }
+                .eraseToAnyPublisher()
+            }
+            .collect()
+            .map { $0.reduce(into: [Token: Result<KaspaBalanceResponseKRC20, Error>]()) { $0[$1.0] = $1.1 }}
+            .eraseToAnyPublisher()
+    }
+}

BlockchainSdk/Blockchains/Kaspa/KaspaKRC20/KaspaTargetKRC20.swift

@@ -0,0 +1,46 @@
+//
+// KaspaTargetKRC20.swift
+// BlockchainSdk
+//
+// Created by Sergei Iakovlev on 17.10.2024
+// Copyright © 2024 Tangem AG. All rights reserved.
+//
+
+import Foundation
+import Moya
+
+struct KaspaTargetKRC20: TargetType {
+    let request: Request
+    let baseURL: URL
+
+    var path: String {
+        switch request {
+        case .balance(let address, let token):
+            return "krc20/address/\(address)/token/\(token)"
+        }
+    }
+
+    var method: Moya.Method {
+        switch request {
+        case .balance:
+            return .get
+        }
+    }
+
+    var task: Moya.Task {
+        switch request {
+        case .balance:
+            return .requestPlain
+        }
+    }
+
+    var headers: [String: String]? {
+        nil
+    }
+}
+
+extension KaspaTargetKRC20 {
+    enum Request {
+        case balance(address: String, token: String)
+    }
+}