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Merge pull request #124 from MetaMask/read-only-rpcs-screen
feature: Add read-only RPCs screen
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,168 @@ | ||
| import Foundation | ||
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| // | ||
| // ReadOnlyCallsView.swift | ||
| // metamask-ios-sdk_Example | ||
| // | ||
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| import SwiftUI | ||
| import Combine | ||
| import metamask_ios_sdk | ||
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| @MainActor | ||
| struct ReadOnlyCallsView: View { | ||
| @EnvironmentObject var metamaskSDK: MetaMaskSDK | ||
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| @State private var showProgressView = false | ||
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| @State var balanceResult: String = "" | ||
| @State var gasPriceResult: String = "" | ||
| @State var web3ClientVersionResult: String = "" | ||
| @State private var errorMessage = "" | ||
| @State private var showError = false | ||
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| var body: some View { | ||
| NavigationView { | ||
| ZStack { | ||
| VStack(spacing: 16) { | ||
| Spacer() | ||
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| VStack { | ||
| Button { | ||
| Task { | ||
| await getBalance() | ||
| } | ||
| } label: { | ||
| Text("Get Balance") | ||
| .modifier(TextButton()) | ||
| .frame(maxWidth: .infinity, maxHeight: 32) | ||
| } | ||
| .modifier(ButtonStyle()) | ||
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| Text(balanceResult) | ||
| .modifier(TextCaption()) | ||
| } | ||
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| VStack { | ||
| Button { | ||
| Task { | ||
| await getGasPrice() | ||
| } | ||
| } label: { | ||
| Text("Get Gas Price") | ||
| .modifier(TextButton()) | ||
| .frame(maxWidth: .infinity, maxHeight: 32) | ||
| } | ||
| .modifier(ButtonStyle()) | ||
|
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| Text(gasPriceResult) | ||
| .modifier(TextCaption()) | ||
| } | ||
|
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| VStack { | ||
| Button { | ||
| Task { | ||
| await getWeb3ClientVersion() | ||
| } | ||
| } label: { | ||
| Text("Get Web3 Client Version") | ||
| .modifier(TextButton()) | ||
| .frame(maxWidth: .infinity, maxHeight: 32) | ||
| } | ||
| .modifier(ButtonStyle()) | ||
|
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| Text(web3ClientVersionResult) | ||
| .modifier(TextCaption()) | ||
| } | ||
| } | ||
| .padding(.horizontal) | ||
|
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| if showProgressView { | ||
| ProgressView() | ||
| .scaleEffect(1.5, anchor: .center) | ||
| .progressViewStyle(CircularProgressViewStyle(tint: .black)) | ||
| } | ||
| } | ||
| .alert(isPresented: $showError) { | ||
| Alert( | ||
| title: Text("Error"), | ||
| message: Text(errorMessage) | ||
| ) | ||
| } | ||
| .onAppear { | ||
| showProgressView = false | ||
| } | ||
| } | ||
| .navigationTitle("Read-Only Calls") | ||
| } | ||
|
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| func getBalance() async { | ||
| let from = metamaskSDK.account | ||
| let params: [String] = [from, "latest"] | ||
| let getBalanceRequest = EthereumRequest( | ||
| method: .ethGetBalance, | ||
| params: params | ||
| ) | ||
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| showProgressView = true | ||
| let requestResult = await metamaskSDK.request(getBalanceRequest) | ||
| showProgressView = false | ||
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| switch requestResult { | ||
| case let .success(value): | ||
| balanceResult = value | ||
| errorMessage = "" | ||
| case let .failure(error): | ||
| errorMessage = error.localizedDescription | ||
| showError = true | ||
| } | ||
| } | ||
|
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| func getGasPrice() async { | ||
| let params: [String] = [] | ||
| let getGasPriceRequest = EthereumRequest( | ||
| method: .ethGasPrice, | ||
| params: params | ||
| ) | ||
|
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| showProgressView = true | ||
| let requestResult = await metamaskSDK.request(getGasPriceRequest) | ||
| showProgressView = false | ||
|
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| switch requestResult { | ||
| case let .success(value): | ||
| gasPriceResult = value | ||
| errorMessage = "" | ||
| case let .failure(error): | ||
| errorMessage = error.localizedDescription | ||
| showError = true | ||
| } | ||
| } | ||
|
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| func getWeb3ClientVersion() async { | ||
| let params: [String] = [] | ||
| let getWeb3ClientVersionRequest = EthereumRequest( | ||
| method: .web3ClientVersion, | ||
| params: params | ||
| ) | ||
|
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| showProgressView = true | ||
| let requestResult = await metamaskSDK.request(getWeb3ClientVersionRequest) | ||
| showProgressView = false | ||
|
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| switch requestResult { | ||
| case let .success(value): | ||
| web3ClientVersionResult = value | ||
| errorMessage = "" | ||
| case let .failure(error): | ||
| errorMessage = error.localizedDescription | ||
| showError = true | ||
| } | ||
| } | ||
| } | ||
|
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| struct ReadOnlyCalls_Previews: PreviewProvider { | ||
| static var previews: some View { | ||
| ReadOnlyCallsView() | ||
| } | ||
| } |