//
//  ButtonViewController.swift
//  VDSSample
//
//  Created by Jarrod Courtney on 9/16/22.
//

import Foundation
import UIKit
import VDS
import VDSColorTokens

class ButtonViewController: ModelScrollViewController {
    
    lazy var usePickerSelectorView = {
        PickerSelectorView<Use>(title: "",
                                 picker: self.picker,
                                 items: [.primary, .secondary])
    }()
    
    lazy var buttonSizePickerSelectorView = {
        PickerSelectorView(title: "",
                            picker: self.picker,
                            items: ButtonSize.allCases)
    }()

    var disabledSwitch = UISwitch()
    var textField = TextField()
    var widthTextField = TextField()

    let button = Button()

    override func viewDidLoad() {
        super.viewDidLoad()
        let view = UIView()
        view.translatesAutoresizingMaskIntoConstraints = false
        view.addSubview(button)
        button.topAnchor.constraint(equalTo: view.topAnchor).isActive = true
        button.bottomAnchor.constraint(equalTo: view.bottomAnchor).isActive = true
        button.leadingAnchor.constraint(equalTo: view.leadingAnchor).isActive = true
        addContentTopView(view: view)

        setupForm()
        setupPicker()
        setupModel()
    }
    
    func setupForm(){
        addFormRow(label: "Surface", view: surfacePickerSelectorView)
        addFormRow(label: "Use", view: usePickerSelectorView)
        addFormRow(label: "Disabled", view: disabledSwitch)
        addFormRow(label: "Label", view: textField)
        addFormRow(label: "Width", view: widthTextField)
        addFormRow(label: "Size", view: buttonSizePickerSelectorView)


        disabledSwitch
            .publisher(for: .valueChanged)
            .sink { [weak self] sender in
                self?.button.disabled = sender.isOn
            }.store(in: &subscribers)

        textField
            .textPublisher
            .sink { [weak self] text in
                self?.button.text = text
            }.store(in: &subscribers)
        
        widthTextField
            .textPublisher
            .sink { [weak self] text in
                if let n = NumberFormatter().number(from: text) {
                    self?.button.width = CGFloat(truncating: n)
                }
            }.store(in: &subscribers)

    }
    
    func setupModel() {
        button.text = "Button"

        button
            .publisher(for: .touchUpInside)
            .sink { control in
                print("clicked me")
            }.store(in: &subscribers)
        
        
        //setup UI
        surfacePickerSelectorView.text = button.surface.rawValue
        disabledSwitch.isOn = button.disabled
        textField.text = button.text
        usePickerSelectorView.text = button.use.rawValue
        widthTextField.text = ""
        buttonSizePickerSelectorView.text = ButtonSize.large.rawValue
    }
      
    func setupPicker(){
        
        surfacePickerSelectorView.onPickerDidSelect = {  [weak self] item in
            self?.button.surface = item
            self?.contentTopView.backgroundColor = item.color
        }
        
        usePickerSelectorView.onPickerDidSelect = {  [weak self] item in
            self?.button.use = item
            self?.button.backgroundColor = item.color
        }
        
        buttonSizePickerSelectorView.onPickerDidSelect = { [weak self] item in
            self?.button.size = item
        }
    }
}