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StarknetProvider.swift
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StarknetProvider.swift
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import Foundation
public enum StarknetProviderError: Error {
case networkProviderError
case unknownError
case jsonRpcError(Int, String, String?)
}
public class StarknetProvider: StarknetProviderProtocol {
private let url: URL
private let networkProvider: HttpNetworkProvider
public init(url: URL) {
self.url = url
self.networkProvider = HttpNetworkProvider()
}
public convenience init?(url: String) {
guard let url = URL(string: url) else {
return nil
}
self.init(url: url)
}
public init(url: URL, urlSession: URLSession) {
self.url = url
self.networkProvider = HttpNetworkProvider(session: urlSession)
}
public convenience init?(url: String, urlSession: URLSession) {
guard let url = URL(string: url) else {
return nil
}
self.init(url: url, urlSession: urlSession)
}
private func buildRequest<U: Decodable, P: Encodable>(method: JsonRpcMethod, params: P) -> Request<U, P> {
let config = getHttpConfiguration()
return Request<U, P>(method: method, params: params, config: config, networkProvider: networkProvider)
}
private func getHttpConfiguration() -> HttpNetworkProvider.Configuration {
HttpNetworkProvider.Configuration(
url: url,
method: "POST",
params: [
(header: "Content-Type", value: "application/json"),
(header: "Accept", value: "application/json"),
]
)
}
private func getBatchRequestRpcPayloads<P: Encodable>(requests: [Request<some Decodable, P>]) -> [JsonRpcPayload<P>] {
requests.enumerated().map { index, request in
JsonRpcPayload(method: request.method, params: request.params, id: index)
}
}
/// Batch multiple HTTP requests together into a single HTTP request.
///
/// - Parameters
/// - requests: list of HTTP requests to be batched together.
///
/// - Returns: batch HTTP request.
public func batchRequests<U: Decodable, P: Encodable>(requests: [Request<U, P>]) -> BatchRequest<U, P> {
let rpcPayloads = getBatchRequestRpcPayloads(requests: requests)
let config = getHttpConfiguration()
return BatchRequest<U, P>(rpcPayloads: rpcPayloads, config: config, networkProvider: networkProvider)
}
/// Batch multiple HTTP requests together into a single HTTP request using variadic parameters.
///
/// - Parameters
/// - requests: one or more HTTP requests to be batched together.
///
/// - Returns: batch HTTP request.
public func batchRequests<U: Decodable, P: Encodable>(requests: Request<U, P>...) -> BatchRequest<U, P> {
let rpcPayloads = getBatchRequestRpcPayloads(requests: requests)
let config = getHttpConfiguration()
return BatchRequest<U, P>(rpcPayloads: rpcPayloads, config: config, networkProvider: networkProvider)
}
public func specVersion() -> Request<String, EmptyParams> {
let params = EmptyParams()
return buildRequest(method: .specVersion, params: params)
}
public func callContract(_ call: StarknetCall, at blockId: StarknetBlockId) -> Request<[Felt], CallParams> {
let params = CallParams(request: call, blockId: blockId)
return buildRequest(method: .call, params: params)
}
public func estimateMessageFee(_ message: StarknetMessageFromL1, at blockId: StarknetBlockId) -> Request<StarknetFeeEstimate, EstimateMessageFeeParams> {
let params = EstimateMessageFeeParams(message: message, blockId: blockId)
return buildRequest(method: .estimateMessageFee, params: params)
}
public func estimateFee(for transactions: [any StarknetExecutableTransaction], at blockId: StarknetBlockId, simulationFlags: Set<StarknetSimulationFlagForEstimateFee>) -> Request<[StarknetFeeEstimate], EstimateFeeParams> {
let params = EstimateFeeParams(request: transactions, simulationFlags: simulationFlags, blockId: blockId)
return buildRequest(method: .estimateFee, params: params)
}
public func getNonce(of contract: Felt, at blockId: StarknetBlockId) -> Request<Felt, GetNonceParams> {
let params = GetNonceParams(contractAddress: contract, blockId: blockId)
return buildRequest(method: .getNonce, params: params)
}
public func addInvokeTransaction(_ transaction: any StarknetExecutableInvokeTransaction) -> Request<StarknetInvokeTransactionResponse, AddInvokeTransactionParams> {
let params = AddInvokeTransactionParams(invokeTransaction: transaction)
return buildRequest(method: .invokeFunction, params: params)
}
public func addDeployAccountTransaction(_ transaction: any StarknetExecutableDeployAccountTransaction) -> Request<StarknetDeployAccountResponse, AddDeployAccountTransactionParams> {
let params = AddDeployAccountTransactionParams(deployAccountTransaction: transaction)
return buildRequest(method: .deployAccount, params: params)
}
public func getClassHashAt(_ address: Felt, at blockId: StarknetBlockId) -> Request<Felt, GetClassHashAtParams> {
let params = GetClassHashAtParams(contractAddress: address, blockId: blockId)
return buildRequest(method: .getClassHashAt, params: params)
}
public func getBlockNumber() -> Request<UInt64, EmptySequence> {
let params = EmptySequence()
return buildRequest(method: .getBlockNumber, params: params)
}
public func getBlockHashAndNumber() -> Request<StarknetBlockHashAndNumber, EmptySequence> {
let params = EmptySequence()
return buildRequest(method: .getBlockHashAndNumber, params: params)
}
public func getEvents(filter: StarknetGetEventsFilter) -> Request<StarknetGetEventsResponse, GetEventsPayload> {
let params = GetEventsPayload(filter: filter)
return buildRequest(method: .getEvents, params: params)
}
public func getTransactionBy(hash: Felt) -> Request<TransactionWrapper, GetTransactionByHashParams> {
let params = GetTransactionByHashParams(hash: hash)
return buildRequest(method: .getTransactionByHash, params: params)
}
public func getTransactionBy(blockId: StarknetBlockId, index: UInt64) -> Request<TransactionWrapper, GetTransactionByBlockIdAndIndex> {
let params = GetTransactionByBlockIdAndIndex(blockId: blockId, index: index)
return buildRequest(method: .getTransactionByBlockIdAndIndex, params: params)
}
public func getTransactionReceiptBy(hash: Felt) -> Request<TransactionReceiptWrapper, GetTransactionReceiptPayload> {
let params = GetTransactionReceiptPayload(transactionHash: hash)
return buildRequest(method: .getTransactionReceipt, params: params)
}
public func getTransactionStatusBy(hash: Felt) -> Request<StarknetGetTransactionStatusResponse, GetTransactionStatusPayload> {
let params = GetTransactionStatusPayload(transactionHash: hash)
return buildRequest(method: .getTransactionStatus, params: params)
}
public func getChainId() -> Request<StarknetChainId, EmptySequence> {
let params = EmptySequence()
return buildRequest(method: .getChainId, params: params)
}
public func simulateTransactions(_ transactions: [any StarknetExecutableTransaction], at blockId: StarknetBlockId, simulationFlags: Set<StarknetSimulationFlag>) -> Request<[StarknetSimulatedTransaction], SimulateTransactionsParams> {
let params = SimulateTransactionsParams(transactions: transactions, blockId: blockId, simulationFlags: simulationFlags)
return buildRequest(method: .simulateTransactions, params: params)
}
}