//
//   CheckboxViewController.swift
//  VDSSample
//
//  Created by Matt Bruce on 8/1/22.
//

import Foundation
import UIKit
import VDS
import VDSColorTokens
import Combine

class  CheckboxViewController: ModelViewController<DefaultCheckboxModel>, StoryboardInitable {
        
    enum PickerType {
        case surface
    }
    static var storyboardId: String = "checkbox"
    static var storyboardName: String = "Components"
    
    @IBOutlet weak var checkboxContainerView: UIView!
    @IBOutlet weak var picker: UIPickerView!
    @IBOutlet weak var surfaceLabel: UILabel!
    
    @IBOutlet weak var disabledSwitch: UISwitch!
    @IBOutlet weak var labelTextField: UITextField!
    @IBOutlet weak var childTextField: UITextField!
    @IBOutlet weak var showErrorSwitch: UISwitch!
    @IBOutlet weak var errorTextField: UITextField!

    var checkbox = Checkbox()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        checkboxContainerView.addSubview(checkbox)
        checkbox.leadingAnchor.constraint(equalTo: checkboxContainerView.leadingAnchor, constant: 10).isActive = true
        checkbox.bottomAnchor.constraint(equalTo: checkboxContainerView.bottomAnchor, constant: -20).isActive = true
        checkbox.topAnchor.constraint(equalTo: checkboxContainerView.topAnchor, constant: 20).isActive = true
        checkbox.trailingAnchor.constraint(equalTo: checkboxContainerView.trailingAnchor, constant: 10).isActive = true
        view.addGestureRecognizer(UITapGestureRecognizer(target: self.view, action: #selector(UIView.endEditing(_:))))
        setupPicker()
        setupModel()
    }
    
    func setupModel() {
        var defaultModel = DefaultCheckboxModel()
        defaultModel.labelText = "Terms and conditions"
        defaultModel.childText = "I agree to Verizon's terms and conditions click here"
        defaultModel.errorText = "Error Text"
        model = defaultModel
        
        checkbox
            .handlerPublisher()
            .sink { [weak self] viewModel in
                self?.model = viewModel
            }.store(in: &subscribers)

        //setup UI
        surfaceLabel.text = model.surface.rawValue
        disabledSwitch.isOn = model.selected
        labelTextField.text = model.labelText
        childTextField.text = model.childText
        showErrorSwitch.isOn = model.hasError
        errorTextField.text = model.errorText
        
    }
    
    override func updateView(viewModel: DefaultCheckboxModel) {
        print("\(Self.self) updateView(viewModel)")
        checkbox.set(with: viewModel)
    }
    
    @IBAction func disabledChanged(_ sender: UISwitch) {
        checkbox.disabled = sender.isOn
    }
    
    @IBAction func onLabelTextDidEnd(_ sender: UITextField) {
        checkbox.labelText = sender.text
        sender.resignFirstResponder()
    }
    
    @IBAction func onChildTextDidEnd(_ sender: UITextField) {
        checkbox.childText = sender.text
        sender.resignFirstResponder()
    }
    
    @IBAction func showErrorChanged(_ sender: UISwitch) {
        checkbox.hasError = sender.isOn
    }
    
    @IBAction func onErrorTextDidEnd(_ sender: UITextField) {
        checkbox.errorText = sender.text
        sender.resignFirstResponder()
    }
    
    @IBAction func surfaceClick(_ sender: Any) {
        pickerType = .surface
    }
    
    //Picker
    var surfacePicker = SurfacePicker()
    
    var pickerType: PickerType = .surface {
        didSet {
            func update(object: UIPickerViewDelegate & UIPickerViewDataSource){
                picker.delegate = object
                picker.dataSource = object
            }
            
            switch pickerType{
            case .surface:
                update(object: surfacePicker)
            }
            picker.reloadAllComponents()
            picker.selectRow(0, inComponent: 0, animated: false)
            picker.isHidden = false
        }
    }
    
    func setupPicker(){
        picker.isHidden = true
        surfacePicker.onPickerDidSelect = {  [weak self] item in
            self?.checkbox.surface = item
            self?.checkboxContainerView.backgroundColor = item.color
            self?.surfaceLabel.text = item.rawValue
        }
    }
}