174 lines
6.9 KiB
Swift
174 lines
6.9 KiB
Swift
//
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// WelcomeView.swift
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// Zircles
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//
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// Created by Francisco Gindre on 6/23/20.
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// Copyright © 2020 Electric Coin Company. All rights reserved.
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//
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import SwiftUI
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import MnemonicSwift
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import ZcashLightClientKit
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struct WelcomeView: View {
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@State var username: String = ""
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@State var seedPhrase: String = ""
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@State var birthdayHeight: String = ""
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@State var isWelcome = false
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@State var showError = false
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@State var error: Error? = nil
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var body: some View {
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ZStack {
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Color.background.edgesIgnoringSafeArea(.all)
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VStack(alignment: .leading, spacing: 16) {
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Text("It looks like you are a new user, let's get to know you! What is your name?")
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.fontWeight(.heavy)
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.foregroundColor(Color.textDarkGray)
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.frame(alignment: .leading)
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VStack(alignment: .leading, spacing: 3) {
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Text("Name or Nickname")
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.foregroundColor(.textLightGray)
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.fontWeight(.heavy)
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.font(.footnote)
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.frame(alignment: .leading)
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Card(isOn: .constant(true),cornerRadius: 5,padding: 8) {
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TextField("some title text", text: $username)
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.foregroundColor(Color.textDarkGray)
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.font(.system(size: 14, weight: .heavy, design: .default))
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}
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}.padding(.all, 0)
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Text("Import an existing Zcash wallet by entering the seed words of that wallet here")
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.fontWeight(.heavy)
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.foregroundColor(Color.textDarkGray)
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.frame(alignment: .leading)
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VStack(alignment: .leading, spacing: 4) {
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Text("Existing Wallet Seed Phrase")
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.foregroundColor(.textLightGray)
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.fontWeight(.heavy)
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.font(.footnote)
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.frame(alignment: .leading)
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Card(isOn: .constant(true),cornerRadius: 5,padding: 8) {
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TextField("Existing Wallet Seed Phrase", text: $seedPhrase)
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.foregroundColor(Color.textDarkGray)
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.font(.system(size: 14, weight: .heavy, design: .default))
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}
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}.padding(.all, 0)
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VStack(alignment: .leading, spacing: 4) {
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Text("Birthday height")
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.foregroundColor(.textLightGray)
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.fontWeight(.heavy)
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.font(.footnote)
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.frame(alignment: .leading)
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Card(isOn: .constant(true),cornerRadius: 5,padding: 8) {
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TextField("Birthday height", text: $birthdayHeight)
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.foregroundColor(Color.textDarkGray)
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.font(.system(size: 14, weight: .heavy, design: .default))
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}
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}.padding(.all, 0)
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Spacer()
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Text("The Zircles app will only send ZEC to other Zircles app.")
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.foregroundColor(.textLightGray)
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.fontWeight(.heavy)
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.font(.footnote)
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.frame(alignment: .center)
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Spacer()
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Button(action: {
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do {
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try initialize()
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} catch {
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ZirclesEnvironment.shared.errorPublisher.send(error)
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}
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}) {
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Text("Add Wallet to Zircles")
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.font(.system(size: 20, weight: .bold, design: .default))
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.shadow(color:Color(.sRGBLinear, red: 0.2, green: 0.2, blue: 0.2, opacity: 0.5), radius: 1, x: 0, y: 2)
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.foregroundColor(Color.background)
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.modifier(ZcashButtonBackground(buttonShape: .roundedCorners(fillStyle: .gradient(gradient: LinearGradient.zButtonGradient))))
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.shadow(color: Color(red: 0.2, green: 0.2, blue: 0.2).opacity(0.5), radius: 25, x: 10, y: 10)
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.frame(height: 50)
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}.disabled(!validInput())
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.opacity(validInput() ? 1.0 : 0.6)
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NavigationLink(
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destination: HomeScreen(),
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isActive: $isWelcome,
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label: {
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EmptyView()
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})
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}
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.padding([.horizontal,.bottom], 30)
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}
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.navigationBarTitle(Text("Welcome"))
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.alert(isPresented: $showError) {
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Alert(
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title: Text("Error"),
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message: Text( error == nil ? "It would be embarrasing if it wasn't a hackathon" : "Error: \( ZirclesEnvironment.WalletError.mapError(error: error!).localizedDescription)"),
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dismissButton: .default(Text("dismiss"), action: {
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self.error = nil
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}))
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}.onReceive(ZirclesEnvironment.shared.errorPublisher) { e in
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self.error = e
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self.showError = true
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if let _ = e as? SeedManager.SeedManagerError {
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ZirclesEnvironment.shared.nuke()
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}
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}
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}
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func initialize() throws {
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ZircleDataStorage.default.saveUsername(self.username)
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try self.importSeed()
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try self.importBirthday()
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try ZirclesEnvironment.shared.initialize()
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self.isWelcome = true
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}
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func validInput() -> Bool {
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validSeedPhrase() && validName() && validBirthday()
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}
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func validSeedPhrase() -> Bool {
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Mnemonic.validate(mnemonic: seedPhrase)
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}
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func validName() -> Bool {
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!username.isEmpty
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}
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func validBirthday() -> Bool {
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birthdayHeight.isEmpty || Int64(birthdayHeight) != nil
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}
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func validateSeed(_ seed: String) -> Bool {
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MnemonicSeedProvider.default.isValid(mnemonic: seed)
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}
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func importBirthday() throws {
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let b = BlockHeight(self.birthdayHeight.trimmingCharacters(in: .whitespacesAndNewlines)) ?? ZcashSDK.SAPLING_ACTIVATION_HEIGHT
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try SeedManager.default.importBirthday(b)
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}
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func importSeed() throws {
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let trimmedSeedPhrase = seedPhrase.trimmingCharacters(in: .whitespacesAndNewlines)
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guard !trimmedSeedPhrase.isEmpty, let seedBytes =
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MnemonicSeedProvider.default.toSeed(mnemonic: trimmedSeedPhrase) else { throw ZirclesEnvironment.WalletError.createFailed
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}
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try SeedManager.default.importSeed(seedBytes)
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try SeedManager.default.importPhrase(bip39: trimmedSeedPhrase)
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}
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}
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struct WelcomeView_Previews: PreviewProvider {
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static var previews: some View {
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NavigationView {
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WelcomeView()
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}
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}
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}
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