Declarative.swift

//
//  MnemonicPhraseCopyViewController.swift
//  ImpulseWallet
//
//  Created by Pavlo Boiko on 20.07.18.
//  Copyright © 2018 Impulse. All rights reserved.
//
import UIKit
import ImpCore
import ImpUI
import ImpResources
import ImpDI

class MnemonicPhraseCopyViewController: BaseTableAdapterController, SwipeableNavigation {
    private lazy var colorProvider: AppColorInterface = inject()
    // MARK: - Store
    private let mnemonic: String
    private var isCopySelected: Bool = false
    
    // MARK: - Init
    required init(mnemonic: String) {
        self.mnemonic = mnemonic
        super.init()
    }
    
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    override var state: [TableComponent] {
        [.tabBarSpace,
         .navigationBar(left: LS("Back"),
                        right: "",
                        title: "",
                        lAction: backAction,
                        rAction: nil),
         .title(bold: true, title: LS("MnemonicPhrase.Title")),
         .description(title: LS("MnemonicPhrase.Description"), background: .backgroundColor),
         .empty(height: 20.0, background: .backgroundColor),
         .wordEntering(words: words),
         .empty(height: 40.0, background: .backgroundColor),
         .smallCenteredButton(title: isCopySelected ? LS("MnemonicPhrase.Copied") : LS("MnemonicPhrase.Copy"),
                              isEnable: !isCopySelected,
                              action: copyAction,
                              background: .backgroundColor),
         .calculableSpace(background: .backgroundColor),
         .centeredButton(title: LS("MnemonicPhrase.Continue"),
                         isEnable: isCopySelected,
                         action: continueAction,
                         background: .backgroundColor),
         .empty(height: 20, background: .backgroundColor)
        ]
    }
    
    private var words: [PhraseEnteringState] {
        return mnemonic.split(separator: " ").map {
            return PhraseEnteringState.entered(String($0), editingIndex: 0)
        }
    }
    
    // MARK: - Actions
    private lazy var backAction: () -> Void = {
        (inject() as WalletRouterInterface).pop()
    }
    
    private lazy var copyAction: () -> Void = {
        UIPasteboard.general.string = self.mnemonic
        self.isCopySelected = true
        self.tableAdapter.performTableUpdate(newState: self.state, withAnimation: .fade)
    }
    
    private lazy var continueAction: () -> Void = {
        (inject() as UserStorageServiceInterface).update({ (user) in
            user.backup.currentlyBackup.add(.mnemonic)
        })
        (inject() as SettingsRouterInterface).pop()
    }
    
}