//
//  ButtonIconViewController.swift
//  VDSSample
//
//  Created by Matt Bruce on 5/12/23.
//

import Foundation
import UIKit
import VDS
import Combine
import VDSTokens

class ButtonIconViewController: BaseViewController<ButtonIcon> {
    
    lazy var kindPickerSelectorView = {
        PickerSelectorView(title: "",
                           picker: self.picker,
                           items: ButtonIcon.Kind.allCases)
    }()

    lazy var surfaceTypePickerSelectorView = {
        PickerSelectorView(title: "",
                           picker: self.picker,
                           items: ButtonIcon.SurfaceType.allCases)
    }()

    lazy var colorPickerSelectorView = {
        PickerSelectorView(title: "",
                           picker: self.picker,
                           items: UIColor.VDSColor.allCases)
    }()
    
    lazy var namePickerSelectorView = {
        PickerSelectorView(title: "",
                           picker: self.picker,
                           items: Icon.Name.all.sorted{ $0.rawValue < $1.rawValue })
    }()
   
    lazy var selectedIconNamePickerSelectorView = {
        PickerSelectorView(title: "",
                           picker: self.picker,
                           items: Icon.Name.all.sorted{ $0.rawValue < $1.rawValue })
    }()
    
    lazy var sizePickerSelectorView = {
        PickerSelectorView(title: "",
                           picker: self.picker,
                           items: ButtonIcon.Size.allCases)
    }()
    
    var customSizeField = NumericField()
    var centerX = NumericField()
    var centerY = NumericField()
    var fitToIcon = Toggle()
    var floating = Toggle()
    var hideBorder = Toggle()
    var disabledSwitch = Toggle()
    var selectableSwitch = Toggle()
    var badgeIndicatorSwitch = Toggle()
    var variantOneSwitch = Toggle()
        
    lazy var badgeIndicatorExpandDirectionPickerSelectorView = {
        PickerSelectorView(title: "right",
                           picker: self.picker,
                           items: ButtonIcon.BadgeIndicatorModel.ExpandDirection.allCases)
    }()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        addContentTopView(view: .makeWrapper(for: component, edgeSpacing: 16.0), edgeSpacing: 0.0)
        setupPicker()
        setupModel()
    }
    
    var badgeIndicatorFormStackView = FormSection().with { $0.isHidden = true }
    
    ///ColorPicker
    var colorPickerType: ColorPickerType = .light
    enum ColorPickerType {
        case light, dark
    }
    
    lazy var colorPicker: UIColorPickerViewController = {
        let picker = UIColorPickerViewController()
        picker.delegate = self
        return picker
    }()
    
    lazy var lightColorPicker: ColorPickerView<ColorPickerType> = {
        return .init(with: ColorPickerType.light) {[weak self] picker in
            self?.colorPickerType = picker.pickerType
            self?.selectedColorTapped(picker)
        }
    }()
    
    lazy var darkColorPicker: ColorPickerView = {
        return .init(with: ColorPickerType.dark) {[weak self] picker in
            self?.colorPickerType = picker.pickerType
            self?.selectedColorTapped(picker)
        }
    }()
    
    override func setupForm(){
        super.setupForm()
        addFormRow(label: "Disabled", view: disabledSwitch)
        addFormRow(label: "Surface", view: surfacePickerSelectorView)
        addFormRow(label: "Surface Type", view: surfaceTypePickerSelectorView)
        addFormRow(label: "Size", view: sizePickerSelectorView)
        addFormRow(label: "Kind", view: kindPickerSelectorView)
        addFormRow(label: "Selected Light", view: lightColorPicker)
        addFormRow(label: "Selected Dark", view: darkColorPicker)
        addFormRow(label: "Floating", view: floating)
        addFormRow(label: "Hide Border", view: hideBorder)
        addFormRow(label: "Fit To Icon", view: fitToIcon)
        addFormRow(label: "Name", view: namePickerSelectorView)
        addFormRow(label: "Selected Icon Name", view: selectedIconNamePickerSelectorView)
        addFormRow(label: "Selectable", view: selectableSwitch)
        addFormRow(label: "X Offset", view: centerX)
        addFormRow(label: "Y Offset", view: centerY)
        
        //badgeIndicator section
        addFormRow(label: "Show Badge Indicator", view: badgeIndicatorSwitch)
        badgeIndicatorFormStackView.addFormRow(label: "Expand Direction", view: badgeIndicatorExpandDirectionPickerSelectorView)
        badgeIndicatorFormStackView.addFormRow(label: "Badge Variants", view: variantOneSwitch)
        append(section: badgeIndicatorFormStackView)

        variantOneSwitch.onChange = { [weak self] sender in
            self?.setBadgeIndicatorModel()
        }
        
        badgeIndicatorSwitch.onChange =  { [weak self] sender in
            guard let self else { return }
            self.component.showBadgeIndicator = sender.isOn
            self.badgeIndicatorFormStackView.isHidden = !sender.isOn
            self.setBadgeIndicatorModel()
            variantOneSwitch.isOn = false
        }
        
        disabledSwitch.onChange =  { [weak self] sender in
            self?.component.isEnabled = !sender.isOn
        }
        
        selectableSwitch.onChange = { [weak self] sender in
            guard let self else { return }
            self.component.selectable = !self.component.selectable
        }
        
        floating.onChange =  { [weak self] sender in
            self?.component.floating = sender.isOn
        }

        hideBorder.onChange =  { [weak self] sender in
            self?.component.hideBorder = !sender.isOn
        }

        fitToIcon.onChange =  { [weak self] sender in
            self?.component.fitToIcon = sender.isOn
        }
        
        customSizeField
            .numberPublisher
            .sink { [weak self] number in
                self?.component.customSize = number?.intValue
            }.store(in: &subscribers)
        
        centerX
            .numberPublisher
            .sink { [weak self] _ in
                self?.updateOffset()
            }.store(in: &subscribers)
        
        centerY
            .numberPublisher
            .sink { [weak self] _ in
                self?.updateOffset()
            }.store(in: &subscribers)
    }
    
    func setupModel() {
        let name = Icon.Name.addToFavorite
        
        component.iconName = name
        //setup UI
        surfacePickerSelectorView.text = component.surface.rawValue
        surfaceTypePickerSelectorView.text = component.surfaceType.rawValue
        kindPickerSelectorView.text = component.kind.rawValue
        sizePickerSelectorView.text = component.size.rawValue
        namePickerSelectorView.text = name.rawValue
        disabledSwitch.isOn = !component.isEnabled
        badgeIndicatorExpandDirectionPickerSelectorView.text = ButtonIcon.BadgeIndicatorModel.ExpandDirection.right.rawValue
    }
    
    func updateOffset() {
        if let x = centerX.floatValue, let y = centerY.floatValue {
            component.iconOffset = .init(x: x, y: y)
        } else if let x = centerX.floatValue {
            component.iconOffset = .init(x: x, y: 0)
        } else if let y = centerY.floatValue {
            component.iconOffset = .init(x: 0, y: y)
        } else {
            component.iconOffset = .init(x: 0, y: 0)
        }
    }
    
    
    func setupPicker(){
        
        surfacePickerSelectorView.onPickerDidSelect = {  [weak self] item in
            self?.component.surface = item
            self?.contentTopView.backgroundColor = item.color
        }
        
        surfaceTypePickerSelectorView.onPickerDidSelect = { [weak self] item in
            self?.component.surfaceType = item
        }
        
        
        kindPickerSelectorView.onPickerDidSelect = { [weak self] item in
            self?.component.kind = item
        }
        
        sizePickerSelectorView.onPickerDidSelect = {  [weak self] item in
            self?.component.size = item
        }
        
        namePickerSelectorView.onPickerDidSelect = {  [weak self] item in
            self?.component.iconName = item
        }
        
        selectedIconNamePickerSelectorView.onPickerDidSelect = {  [weak self] item in
            self?.component.selectedIconName = item
        }
        
        badgeIndicatorExpandDirectionPickerSelectorView.onPickerDidSelect = {  [weak self] item in
            self?.setBadgeIndicatorModel()
        }
    }
    
    func setBadgeIndicatorModel() {
        if variantOneSwitch.isOn {
            if badgeIndicatorSwitch.isOn {
                component.badgeIndicatorModel = ButtonIcon.BadgeIndicatorModel(kind: BadgeIndicator.Kind.simple, size: BadgeIndicator.Size.small)
            } else {
                component.badgeIndicatorModel = nil
            }
        } else  {
            component.badgeIndicatorModel = ButtonIcon.BadgeIndicatorModel(kind: BadgeIndicator.Kind.numbered, expandDirection: badgeIndicatorExpandDirectionPickerSelectorView.selectedItem, size: BadgeIndicator.Size.small, maximumDigits: BadgeIndicator.MaximumDigits.two, number: 999)
        }
    }
}

extension UITextField {
    public var floatValue: CGFloat? {
        guard let text, let double = Double(text) else { return nil }
        return CGFloat(double)
    }
}

extension ButtonIconViewController: ComponentSampleable {
    static func makeSample() -> ComponentSample {
        let component = Self.makeComponent()
        component.iconName = .addToFavorite
        component.size = .large
        return ComponentSample(component: component, trailingPinningType: .lessThanOrEqual)
    }
}

extension ButtonIconViewController: UIColorPickerViewControllerDelegate {
    
    func selectedColorTapped(_ picker: ColorPickerView<ColorPickerType>) {
        let selectedColor = picker.selectedColor
        if let selectedColor {
            colorPicker.selectedColor = selectedColor
        }
        present(colorPicker, animated: true)
    }

    func colorPickerViewControllerDidFinish(_ viewController: UIColorPickerViewController) {
        dismiss(animated: true)
    }
    
    func colorPickerViewControllerDidSelectColor(_ viewController: UIColorPickerViewController) {
        let color = viewController.selectedColor
        let selectedColorPickerView = colorPickerType == .dark ? darkColorPicker : lightColorPicker
        selectedColorPickerView.selectedColor = color
        if let selectedDarkColor = darkColorPicker.selectedColor, let selectedLightColor = lightColorPicker.selectedColor {
            component.selectedIconColorConfiguration = .init(selectedLightColor, selectedDarkColor)
        }
    }
}