//
//  InheritanceControllerSetup.swift
//  Wallet
//
//  Created by Igor on 15.03.2021.
//  Copyright © 2021 AM. All rights reserved.
//

import UIKit
import WalletFoundation

class InheritanceControllerSetup: UIViewController {
    
    @IBOutlet private weak var headerLbl: UILabel!
    @IBOutlet private weak var periodTxtFld: CommonTextField!
    @IBOutlet private weak var addBtn: UIButton!
    @IBOutlet private weak var stackView: UIStackView!
    @IBOutlet private weak var submitBtn: UIButton!
    
    var service: Inheritance.Service.Setup!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        title = L10n.Inheritance.Setup.title
        navigationItem.leftBarButtonItem = .pop(self)
        switch service.contract {
        case .cash:
            headerLbl.attributedText = L10n.Inheritance.Setup.header(L10n.Inheritance.Menu.cash)
                .attributed(style: .bold, size: 24, color: Asset.textCoal.color)
        case .list:
            headerLbl.attributedText = L10n.Inheritance.Setup.header(L10n.Inheritance.Menu.list)
                .attributed(style: .bold, size: 24, color: Asset.textCoal.color)
        case .swap:
            headerLbl.attributedText = L10n.Inheritance.Setup.header(L10n.Inheritance.Menu.swap)
                .attributed(style: .bold, size: 24, color: Asset.textCoal.color)
        default:
            return
        }
        periodTxtFld.keyboardType = .numberPad
        stackView.arrangedSubviews.forEach({ $0.removeFromSuperview() })
        service.collection.forEach({ stackView.addArrangedSubview(InheritanceViewShare(share: $0, delete: delete())) })
        
        service.didReload = { [weak self] in self?.reload(animated: true) }
        service.didUpdate = { [weak self] in self?.update(animated: true) }
        
        reload(animated: false)
    }
    
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        Accounts().isLocked = true
    }
    
    override func viewWillDisappear(_ animated: Bool) {
        super.viewWillDisappear(animated)
        Accounts().isLocked = false
    }
    
    private func reload(animated: Bool) {
        periodTxtFld.set(value: service.period > 0 ? "\(service.period)" : "", animated: animated)
        var shares = stackView.arrangedSubviews.compactMap({ $0 as? InheritanceViewShare })
        if shares.count > service.collection.count {
            shares.filter({ view in !service.collection.contains(where: { $0.uuid == view.share.uuid }) }).forEach({ $0.removeFromSuperview() })
        } else if shares.count < service.collection.count {
            service.collection.last >>- {
                stackView.addArrangedSubview(InheritanceViewShare(share: $0, delete: delete()))
            }
        }
        shares = stackView.arrangedSubviews.compactMap({ $0 as? InheritanceViewShare })
        shares.enumerated().forEach({ $0.element.share = self.service.collection[$0.offset] })
        shares.enumerated().forEach({ $0.element.showDelete = $0.offset != 0 })
        
        update(animated: animated)
    }
    
    private func update(animated: Bool) {
        addBtn.isEnabled = service.canAdd
        submitBtn.isEnabled = service.isValid
        stackView.arrangedSubviews.compactMap({ $0 as? InheritanceViewShare }).forEach({ $0.update(error: service.errors[.percent]) })
        view.animateIfNeeded(duration: animated ? .medium : .none)
    }
    
    private func delete() -> (Inheritance.Model.Share) -> Void {{ share in
        Alert.system(text: L10n.Inheritance.Setup.delete(share.account), actions: [.delete { self.service.delete(share: share) }, .cancel], in: self)
    }}
    
    @IBAction func onAdd(_: AnyObject?) {
        service.add()
    }
    
    @IBAction func onSubmit(_: AnyObject?) {
        view.endEditing(true)
        AccountViewAuthorize.showGetPrivateKey(in: self) {
            Loader.show()
            self.service.submit(privateKey: $0) {
                Loader.hide()
                Alert.notify($0, pop: self)
            }
        }
    }
    
}

extension InheritanceControllerSetup: CommonTextFieldDelegate {
    func textFieldDidChange(_ textField: CommonTextField) {
        service.period = Int(textField.value) ?? 0
        textField.error = service.errors[.period]
    }
}