//
//  TabsViewController.swift
//  VDSSample
//
//  Created by Matt Bruce on 5/18/23.
//

import Foundation
import UIKit
import VDS
import Combine
import VDSColorTokens

class TabsViewController: BaseViewController<Tabs> {
    
    var disabledSwitch = Toggle()
    var borderlineSwitch = Toggle()
    var fillContainerSwitch = Toggle()
    var sampleSwitch = Toggle()
    var widthValueTextField = NumericField()
    var widthPercentageTextField = NumericField()

    var verticalOrientationFormStackView: UIStackView = {
        return UIStackView().with {
            $0.translatesAutoresizingMaskIntoConstraints = false
            $0.alignment = .fill
            $0.distribution = .fillProportionally
            $0.axis = .vertical
            $0.spacing = 10
            $0.isHidden = true
        }
    }()

    var horizontalOrientationFormStackView: UIStackView = {
        return UIStackView().with {
            $0.translatesAutoresizingMaskIntoConstraints = false
            $0.alignment = .fill
            $0.distribution = .fillProportionally
            $0.axis = .vertical
            $0.spacing = 10
        }
    }()

    override func allTextFields() -> [TextField]? { [widthValueTextField, widthPercentageTextField] }
    
    lazy var orientationPickerSelectorView = {
        PickerSelectorView(title: "",
                           picker: self.picker,
                           items: Tabs.Orientation.allCases)
    }()
    
    lazy var indicatorPositionPickerSelectorView = {
        PickerSelectorView(title: "",
                           picker: self.picker,
                           items: Tabs.IndicatorPosition.allCases)
    }()
    
    lazy var sizePickerSelectorView = {
        PickerSelectorView(title: "",
                           picker: self.picker,
                           items: Tabs.Size.allCases)
    }()

    lazy var overflowPickerSelectorView = {
        PickerSelectorView(title: "",
                           picker: self.picker,
                           items: Tabs.Overflow.allCases)
    }()

    override func viewDidLoad() {
        super.viewDidLoad()
        addContentTopView(view: component)
        setupPicker()
        setupModel()
    }
    
    override func setupForm(){
        super.setupForm()
        addFormRow(label: "Large Sample", view: .makeWrapper(for: sampleSwitch))
        addFormRow(label: "Disabled", view: .makeWrapper(for: disabledSwitch))
        addFormRow(label: "Show Borderline", view: .makeWrapper(for: borderlineSwitch))
        addFormRow(label: "Surface", view: surfacePickerSelectorView)
        addFormRow(label: "Size", view: sizePickerSelectorView)
        
        if UIDevice.isIPad {
            addFormRow(label: "Orientation", view: orientationPickerSelectorView)
            //only in vertical mode
            addFormRow(label: "% Width (0.25 -> 1.0)", view: widthPercentageTextField, stackView: verticalOrientationFormStackView)
            addFormRow(label: "# Width", view: widthValueTextField, stackView: verticalOrientationFormStackView)
        }
        
        //only in horizontal mode
        addFormRow(label: "Fill Container", view: .makeWrapper(for: fillContainerSwitch), stackView: horizontalOrientationFormStackView)
        addFormRow(label: "Indicator Position", view: indicatorPositionPickerSelectorView, stackView: horizontalOrientationFormStackView)
        addFormRow(label: "Overflow", view: overflowPickerSelectorView, stackView: horizontalOrientationFormStackView)
        
        formStackView.addArrangedSubview(verticalOrientationFormStackView)
        formStackView.addArrangedSubview(horizontalOrientationFormStackView)
        
        disabledSwitch.onChange =  { [weak self] sender in
            self?.component.disabled = sender.isOn
        }
        
        borderlineSwitch.onChange =  { [weak self] sender in
            self?.component.borderLine = sender.isOn
        }
        
        fillContainerSwitch.onChange =  { [weak self] sender in
            self?.component.fillContainer = sender.isOn
        }

        sampleSwitch.onChange =  { [weak self] sender in
            guard let self else { return }
            self.component.selectedIndex = 0
            self.component.tabModels = sender.isOn ? self.allTabs : self.some
        }
        
        widthValueTextField.textPublisher.sink { [weak self] text in
            if let value = Double(text) {
                self?.component.width = .value(value)
                self?.widthPercentageTextField.text = ""

            }
        }.store(in: &subscribers)

        widthPercentageTextField.textPublisher.sink { [weak self] text in
            if let value = Double(text) {
                self?.component.width = .percentage(value)
                self?.widthValueTextField.text = ""
            }
        }.store(in: &subscribers)

    }
    
    var allTabs: [TabModel] = [
        TabModel(text: "All"),
        TabModel(text: "Work Devices"),
        TabModel(text: "Customer Service"),
        TabModel(text: "Help")
    ]
    
    var some: [TabModel] = [
        TabModel(text: "All"),
        TabModel(text: "Work Devices")
    ]
    
    func setupModel() {
        //set to the large sample
        component.tabModels = allTabs
        component.selectedIndex = 3
        

        //setup UI
        surfacePickerSelectorView.text = component.surface.rawValue
        sizePickerSelectorView.text = component.size.rawValue
        orientationPickerSelectorView.text = component.orientation.rawValue
        indicatorPositionPickerSelectorView.text = component.indicatorPosition.rawValue
        overflowPickerSelectorView.text = component.overflow.rawValue
        disabledSwitch.isOn = component.disabled
        borderlineSwitch.isOn = component.borderLine
        fillContainerSwitch.isOn = component.fillContainer
        sampleSwitch.isOn = true
        updateWidth()
    }
    
    func setupPicker(){
        surfacePickerSelectorView.onPickerDidSelect = {  [weak self] item in
            self?.component.surface = item
            self?.contentTopView.backgroundColor = item.color
        }
        
        sizePickerSelectorView.onPickerDidSelect = {  [weak self] item in
            self?.component.size = item
        }
        
        orientationPickerSelectorView.onPickerDidSelect = {  [weak self] item in
            self?.component.orientation = item
            self?.verticalOrientationFormStackView.isHidden = item == .horizontal
            self?.horizontalOrientationFormStackView.isHidden = item == .vertical
        }
        
        indicatorPositionPickerSelectorView.onPickerDidSelect = {  [weak self] item in
            self?.component.indicatorPosition = item
        }

        overflowPickerSelectorView.onPickerDidSelect = {  [weak self] item in
            self?.component.overflow = item
        }
    }
    
    func updateWidth() {
        switch component.width {
        case .percentage(let percentage):
            widthPercentageTextField.text = "\(percentage)"
        case .value(let value):
            widthValueTextField.text = "\(value)"
            widthPercentageTextField.text = ""
        @unknown default:
            print("")
        }
    }
}