//
//  CarouselScrollbarViewConttroller.swift
//  VDSSample
//
//  Created by Kanamarlapudi, Vasavi on 15/03/24.
//

import Foundation
import UIKit
import VDS
import Combine
import VDSColorTokens

class CarouselScrollbarViewConttroller: BaseViewController<CarouselScrollbar> {
    
    lazy var layoutPickerSelectorView = {
        PickerSelectorView(title: "1UP",
                           picker: self.picker,
                           items: CarouselScrollbar.Layout.allCases)
    }()
    
    var slidesTextField = NumericField()
    var disabledSwitch = Toggle()
    var positionTextField = NumericField()


    override func viewDidLoad() {
        super.viewDidLoad()
        addContentTopView(view: component)
        setupPicker()
        setupModel()
    }
    
    override func setupForm(){
        super.setupForm()
        addFormRow(label: "Disabled", view: disabledSwitch)
        addFormRow(label: "Surface", view: surfacePickerSelectorView)
        addFormRow(label: "Layout", view: layoutPickerSelectorView)
        addFormRow(label: "Number Of Slides", view: slidesTextField)
        addFormRow(label: "Position", view: positionTextField)
        
        disabledSwitch.onChange =  { [weak self] sender in
            self?.component.isEnabled = !sender.isOn
        }
        
        slidesTextField
            .numberPublisher
            .sink { [weak self] number in
                guard let number else {
                    self?.component.numberOfSlides = nil
                    return
                }
                self?.component.numberOfSlides = number.intValue
                self?.component.position = Int(self?.positionTextField.text ?? "1")
            }.store(in: &subscribers)
        
        positionTextField
            .numberPublisher
            .sink { [weak self] number in
                guard let number else {
                    self?.component.position = nil
                    return
                }
                self?.component.position = number.intValue
            }.store(in: &subscribers)

    }
    
    func setupModel() {
        //setup UI
        component.numberOfSlides = 3
        surfacePickerSelectorView.text = component.surface.rawValue
        disabledSwitch.isOn = !component.isEnabled
        slidesTextField.text = String(component.numberOfSlides ?? 1)        
    }
      
    func setupPicker(){
        
        surfacePickerSelectorView.onPickerDidSelect = {  [weak self] item in
            self?.component.surface = item
            self?.contentTopView.backgroundColor = item.color
        }
        
        layoutPickerSelectorView.onPickerDidSelect = {  [weak self] item in
            self?.component.selectedLayout = item
            self?.component.position = Int(self?.positionTextField.text ?? "1")
        }
    }
}