//
//  CarouselViewController.swift
//  VDSSample
//
//  Created by Kanamarlapudi, Vasavi on 29/05/24.
//

import Foundation
import UIKit
import VDS
import Combine
import VDSTokens

class CarouselViewController: BaseViewController<Carousel> {
    
    let label = Label()
    
    lazy var scalingTypePickerSelectorView = {
        PickerSelectorView(title: "",
                           picker: self.picker,
                           items: Tilelet.AspectRatio.allCases)
    }()
    
    lazy var paginationDisplayPickerSelectorView = {
        PickerSelectorView(title: "",
                           picker: self.picker,
                           items: Carousel.PaginationDisplay.allCases)
    }()
    
    lazy var peekPickerSelectorView = {
        PickerSelectorView(title: "",
                           picker: self.picker,
                           items: Carousel.Peek.allCases)
    }()
    
    lazy var gutterPickerSelectorView = {
        PickerSelectorView(title: "",
                           picker: self.picker,
                           items: Carousel.Gutter.allCases)
    }()
    
    lazy var layoutPickerSelectorView = {
        PickerSelectorView(title: "1UP",
                           picker: self.picker,
                           items: UIDevice.isIPad ? CarouselScrollbar.Layout.allCases : [CarouselScrollbar.Layout.oneUP, CarouselScrollbar.Layout.twoUP, CarouselScrollbar.Layout.threeUP])
    }()
    
    lazy var paginationKindPickerSelectorView = {
        PickerSelectorView(title: "",
                           picker: self.picker,
                           items: ButtonIcon.Kind.allCases)
    }()
    
    lazy var horizAlignmtPickerSelectorView = {
        PickerSelectorView(title: "",
                           picker: self.picker,
                           items: Carousel.Horizontal.allCases)
    }()
    
    lazy var vertAlignmtPickerSelectorView = {
        PickerSelectorView(title: "",
                           picker: self.picker,
                           items: Carousel.Vertical.allCases)
    }()
    
    var paginationFloatingSwitch = Toggle()
    var paginationInsetField = NumericField()
    var widthTextField = NumericField()
    var percentageTextField = NumericField()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        addContentTopView(view: component)
        setupPicker()
        setupModel()
    }
    
    override func setupForm() {
        super.setupForm()
        //add form rows
        addFormRow(label: "onChange", view: label)
        addFormRow(label: "Surface", view: surfacePickerSelectorView)
        addFormRow(label: "Aspect Ratio", view: scalingTypePickerSelectorView)
        addFormRow(label: "Pagination Display", view: paginationDisplayPickerSelectorView)
        addFormRow(label: "Peek", view: peekPickerSelectorView)
        addFormRow(label: "Gutter", view: gutterPickerSelectorView)
        addFormRow(label: "Layout", view: layoutPickerSelectorView)
        addFormRow(label: "Pagination Kind", view: paginationKindPickerSelectorView)
        addFormRow(label: "Pagination Float", view: paginationFloatingSwitch)
        addFormRow(label: "Pagination Inset", view: paginationInsetField)
        addFormRow(label: "Width", view: widthTextField)
        addFormRow(label: "Percentage (1-100)", view: percentageTextField)
        addFormRow(label: "Slot Horizontal Alignment", view: horizAlignmtPickerSelectorView)
        addFormRow(label: "Slot Vertical Alignment", view: vertAlignmtPickerSelectorView)
        
        widthTextField
            .numberPublisher
            .sink { [weak self] number in
                if let number {
                    self?.component.width = .value(number.cgFloatValue)
                    self?.percentageTextField.text = ""
                } else {
                    self?.component.width = nil
                }
            }.store(in: &subscribers)
        
        percentageTextField
            .numberPublisher
            .sink { [weak self] number in
                if let number {
                    self?.component.width = .percentage(number.cgFloatValue)
                    self?.widthTextField.text = ""
                } else {
                    self?.component.width = nil
                }
            }.store(in: &subscribers)
        
        paginationInsetField
            .numberPublisher
            .sink { [weak self] number in
                if let number {
                    self?.component.paginationInset = number.cgFloatValue
                } else {
                    self?.component.paginationInset =  UIDevice.isIPad ? VDSLayout.space3X : VDSLayout.space2X
                }
            }.store(in: &subscribers)
        
        paginationFloatingSwitch.onChange = { [weak self] sender in
            guard let self else { return }
            self.component.pagination = .init(kind: paginationKindPickerSelectorView.selectedItem, floating: sender.isOn)
        }
        
    }
    
    func setupModel() {
        //setup UI
        scalingTypePickerSelectorView.text = component.aspectRatio.rawValue
        paginationDisplayPickerSelectorView.text = component.paginationDisplay.rawValue
        peekPickerSelectorView.text = component.peek.rawValue
        gutterPickerSelectorView.text = component.gutter.rawValue
        layoutPickerSelectorView.text = component.layout.rawValue
        paginationKindPickerSelectorView.text = ButtonIcon.Kind.lowContrast.rawValue
        paginationFloatingSwitch.isOn = true
        paginationInsetField.text = UIDevice.isIPad ? "12" : "8"
        component.data = [{},{},{},{},{},{},{},{}]
    }
    
    func setupPicker() {
        surfacePickerSelectorView.onPickerDidSelect = {  [weak self] item in
            self?.component.surface = item
            self?.contentTopView.backgroundColor = item.color
        }
        
        scalingTypePickerSelectorView.onPickerDidSelect = {  [weak self] item in
            self?.component.aspectRatio = item
        }
        
        paginationDisplayPickerSelectorView.onPickerDidSelect = {  [weak self] item in
            self?.component.paginationDisplay = item
        }
        
        peekPickerSelectorView.onPickerDidSelect = {  [weak self] item in
            self?.component.peek = item
        }
        
        gutterPickerSelectorView.onPickerDidSelect = {  [weak self] item in
            self?.component.gutter = item
        }
        
        layoutPickerSelectorView.onPickerDidSelect = {  [weak self] item in
            self?.component.layout = item
        }
        
        paginationKindPickerSelectorView.onPickerDidSelect = {  [weak self] item in
            guard let self else { return }
            self.component.pagination = .init(kind: item, floating: paginationFloatingSwitch.isOn)
        }
        
    }
}