//
//  RadioSwatchGroupViewController.swift
//  VDSSample
//
//  Created by Matt Bruce on 8/30/22.
//

import Foundation
import UIKit
import VDS
import VDSColorTokens
import Combine

class  RadioSwatchGroupViewController: ModelScrollViewController<DefaultRadioSwatchGroupModel> {
    
    enum PickerType {
        case surface
    }
  
    var disabledSwitch = UISwitch()
    var strikeThroughSwitch = UISwitch()
    var surfacePickerSelectorView = PickerSelectorView(title: "light")
    var textField = TextField()
    var subTextField = TextField()
    var subTextRightField = TextField()
    var showErrorSwitch = UISwitch()
    
    var radioSwatchGroup = RadioSwatchGroup()
        
    override func viewDidLoad() {
        super.viewDidLoad()
        addContentTopView(view: radioSwatchGroup)
        setupForm()
        setupPicker()
        setupModel()
    }
    
    func setupForm() {
        addFormRow(label: "Disabled", view: disabledSwitch)
        addFormRow(label: "Surface", view: surfacePickerSelectorView)
        addFormRow(label: "Strikethrough", view: strikeThroughSwitch)
        addFormRow(label: "Text", view: textField)

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

        strikeThroughSwitch
            .publisher(for: .valueChanged)
            .sink { [weak self] sender in
                let selectors = self?.model.selectors.compactMap { existing in
                    if existing.inputId == self?.model.selectors.first?.inputId {
                        return existing.copyWith {
                            $0.strikethrough = sender.isOn
                        }
                    } else {
                        return existing
                    }
                }
                if let selectors {
                    self?.model.selectors = selectors
                }
            }.store(in: &subscribers)

        textField
            .textPublisher
            .sink { [weak self] text in
                let selectors = self?.model.selectors.compactMap { existing in
                    if existing.inputId == self?.model.selectors.first?.inputId {
                        return existing.copyWith {
                            $0.text = text
                        }
                    } else {
                        return existing
                    }
                }
                if let selectors {
                    self?.model.selectors = selectors
                }
            }.store(in: &subscribers)
                
        surfacePickerSelectorView.button
            .publisher(for: .touchUpInside)
            .sink { [weak self] _ in
                self?.pickerType = .surface
            }.store(in: &subscribers)
    }
    

    func setupModel(){
        var defaultModel = DefaultRadioSwatchGroupModel()
        
        var model1 = DefaultRadioSwatchModel()
        model1.fillImage = UIImage(named: "imageSwatch")
        model1.text = "Image"
        model1.inputId = "radioSwatch1"
                
        var model2 = DefaultRadioSwatchModel()
        model2.primaryColor = .red
        model2.secondaryColor = .blue
        model2.text = "Red/Blue"
        model2.inputId = "radioSwatch2"
        
        var model3 = DefaultRadioSwatchModel()
        model3.primaryColor = .green
        model3.text = "Green"
        model3.inputId = "radioSwatch3"

        var model4 = DefaultRadioSwatchModel()
        model4.primaryColor = .orange
        model4.text = "Orange"
        model4.inputId = "radioSwatch4"

        var model5 = DefaultRadioSwatchModel()
        model5.primaryColor = .brown
        model5.text = "Brown"
        model5.inputId = "radioSwatch5"
        
        var model6 = DefaultRadioSwatchModel()
        model6.primaryColor = .yellow
        model6.text = "Yellow"
        model6.inputId = "radioSwatch6"

        var model7 = DefaultRadioSwatchModel()
        model7.primaryColor = .purple
        model7.text = "Puple"
        model7.inputId = "radioSwatch7"

        var model8 = DefaultRadioSwatchModel()
        model8.primaryColor = .systemPink
        model8.text = "Pink"
        model8.inputId = "radioSwatch8"

        
        defaultModel.selectors = [model1, model2, model3, model4, model5, model6, model7, model8]
        set(with: defaultModel)

        //update the model
        radioSwatchGroup
            .handlerPublisher()
            .sink { [weak self] updatedModel in
                self?.model = updatedModel
                self?.disabledSwitch.isOn = updatedModel.disabled
            }
            .store(in: &subscribers)

        radioSwatchGroup
            .publisher(for: .valueChanged)
            .sink { group in
                print("Selected: \(group.selectedModel?.text ?? "none")")
            }.store(in: &subscribers)
        
        //set UI values
        surfacePickerSelectorView.text = model.surface.rawValue
        disabledSwitch.isOn = model.disabled
        textField.text = model1.text
    }
    
    override func updateView(viewModel: ModelType) {
        print("\(Self.self) updateView(viewModel)")
        disabledSwitch.isOn = viewModel.disabled
        radioSwatchGroup.set(with: viewModel)
    }
    
    //Picker
    var surfacePicker = SurfacePicker()
    
    var pickerType: PickerType = .surface {
        didSet {
            func update(object: UIPickerViewDelegate & UIPickerViewDataSource){
                picker.delegate = object
                picker.dataSource = object
            }
            
            switch pickerType{
            case .surface:
                update(object: surfacePicker)
            }
            picker.reloadAllComponents()
            picker.selectRow(0, inComponent: 0, animated: false)
            picker.isHidden = false
        }
    }
    
    func setupPicker(){
        surfacePicker.onPickerDidSelect = { [weak self] item in
            self?.radioSwatchGroup.surface = item
            self?.contentTopView.backgroundColor = item.color
            self?.surfacePickerSelectorView.text = item.rawValue
        }
    }
}