//
//  AccountOnboardingAddPrivateKey.swift
//  Wallet
//
//  Created by Alexandr Serpokrylow on 23.02.2022.
//  Copyright © 2022 AM. All rights reserved.
//

import UIKit
import EosioSwift
import WalletKit

final class AccountOnboardingAddPrivateKey: CommonViewCustom {
    
    enum Constants {
        static let maxPrivateKeyTextCount = 51
    }
    
    @IBOutlet weak var textField: CommonTextField!
    @IBOutlet weak var submitButton: CommonButtonAction!
    
    var onSubmit: ((WalletKey) -> Void)?
    
    override func setup() {
        super.setup()
        textField.delegate = self
        submitButton.isEnabled = false
    }
    
    @IBAction func onCheckClicked(_ sender: Any) {
        do {
            let privateKey = try WalletKey.create(private: textField.value)
            onSubmit?(privateKey)
        } catch {
            self.textField.error = L10n.Error.Accounts.keyInvalid
            self.submitButton.isEnabled = false
        }
    }
}

// MARK: - CommonTextFieldDelegate

extension AccountOnboardingAddPrivateKey: CommonTextFieldDelegate {
    
    func textFieldDidChange(_ textField: CommonTextField) {
        self.submitButton.isEnabled = textField.value.count == Constants.maxPrivateKeyTextCount
        textField.error = nil
    }
    
    func textField(_ textField: CommonTextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
        let currentText = textField.value
        
        guard let stringRange = Range(range, in: currentText) else { return false }

        let updatedText = currentText.replacingCharacters(in: stringRange, with: string)
        let shouldChange = updatedText.count <= Constants.maxPrivateKeyTextCount

        return shouldChange
    }
}