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

import Foundation
import UIKit
import VDS
import VDSColorTokens

class ToggleViewController: BaseViewController {
    
    lazy var textSizePickerSelectorView = {
        PickerSelectorView(title: "",
                           picker: self.picker,
                           items: ToggleTextSize.allCases)
        
    }()
    
    lazy var textPositionPickerSelectorView = {
        PickerSelectorView(title: "",
                           picker: self.picker,
                           items: ToggleTextPosition.allCases)
    }()

    var disabledSwitch = UISwitch()
    var showTextSwitch = UISwitch()

    var textFormStackView: UIStackView = {
        return UIStackView().with {
            $0.translatesAutoresizingMaskIntoConstraints = false
            $0.alignment = .fill
            $0.distribution = .fillProportionally
            $0.axis = .vertical
            $0.spacing = 10
        }
    }()
    
    var boldSwitch = UISwitch()
    var onTextField = TextField()
    var offTextField = TextField()

    var toggle = Toggle()

    override func viewDidLoad() {
        super.viewDidLoad()
        addContentTopView(view: .makeWrapper(for: toggle))
                
        setupForm()
        setupPicker()
    }
    
    func setupForm() {
        
        addFormRow(label: "Show Text", view: showTextSwitch)
        addFormRow(label: "Surface", view: surfacePickerSelectorView)
        addFormRow(label: "Disabled", view: disabledSwitch)
        
        //add the hidden elements to textFormStackView
        addFormRow(label: "Bold", view: boldSwitch, stackView: textFormStackView)
        addFormRow(label: "Text Size", view: textSizePickerSelectorView, stackView: textFormStackView)
        addFormRow(label: "Text Position", view: textPositionPickerSelectorView, stackView: textFormStackView)
        addFormRow(label: "On Text", view: onTextField, stackView: textFormStackView)
        addFormRow(label: "Off Text", view: offTextField, stackView: textFormStackView)
        //add textFormStackView to main form
        formStackView.addArrangedSubview(textFormStackView)
        
        toggle.publisher(for: .valueChanged)
            .sink { [weak self] toggle in
                let alertController:UIAlertController = UIAlertController(title: "Alert",
                                                                          message: "Toggle Value: \(toggle.isOn)",
                                                                          preferredStyle: UIAlertController.Style.alert)
                alertController.addAction(UIAlertAction(title: "OK", style: UIAlertAction.Style.default, handler:nil))
                self?.present(alertController, animated: true)
                print("toggle changed: \(toggle.isOn)")
            }.store(in: &subscribers)
        
        showTextSwitch
            .publisher(for: .valueChanged)
            .sink { [weak self] sender in
                self?.toggle.showText = sender.isOn
                self?.textFormStackView.isHidden = !sender.isOn
            }.store(in: &subscribers)

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

        onTextField
            .textPublisher
            .sink { [weak self] text in
                self?.toggle.onText = text
            }.store(in: &subscribers)

        offTextField
            .textPublisher
            .sink { [weak self] text in
                self?.toggle.offText = text
            }.store(in: &subscribers)

        textFormStackView.isHidden = true
        
        //setup UI
        surfacePickerSelectorView.text = toggle.surface.rawValue
        textSizePickerSelectorView.text = toggle.textSize.rawValue
        textPositionPickerSelectorView.text = toggle.textPosition.rawValue
        onTextField.text = toggle.onText
        offTextField.text = toggle.offText
    }
    
    //Picker        
    func setupPicker(){
        
        surfacePickerSelectorView.onPickerDidSelect = {  [weak self] item in
            self?.toggle.surface = item
            self?.contentTopView.backgroundColor = item.color
        }
                
        textSizePickerSelectorView.onPickerDidSelect = {  [weak self] item in
            self?.toggle.textSize = item
        }

        textPositionPickerSelectorView.onPickerDidSelect = {  [weak self] item in
            self?.toggle.textPosition = item
        }
        
    }
}