vds_ios_sample/VDSSample/ViewControllers/TextEntryFieldViewController.swift

//
//  TextEntryFieldViewController.swift
//  VDSSample
//
//  Created by Matt Bruce on 10/3/22.
//

import Foundation
import UIKit
import VDS
import VDSColorTokens
import Combine

class  TextEntryFieldViewController: ModelScrollViewController<DefaultTextEntryField> {

    lazy var helperTextPlacementPickerSelectorView = {
        PickerSelectorView(title: "",
                            picker: self.picker,
                            items: HelperTextPlacement.allCases)
    }()

    var disabledSwitch = UISwitch()
    var labelTextField = TextField()
    var errorTextField = TextField()
    var successTextField = TextField()
    var helperTextField = TextField()
    var widthTextField = TextField()
    var showErrorSwitch = UISwitch()
    var showSuccessSwitch = UISwitch()

    var textEntryField = TextEntryField()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        addContentTopView(view: textEntryField)
        setupForm()
        setupPicker()
        setupModel(model: getModel())
    }
    
    func getModel() -> DefaultTextEntryField {
        var defaultModel = DefaultTextEntryField()
        defaultModel.type = .text
        defaultModel.width = 328
        defaultModel.labelText = "Street Address"
        defaultModel.helperText = "For example: 123 Verizon St"
        defaultModel.errorText = "Enter a valid address."
        defaultModel.successText = "Good job entering a valid address!"
        return defaultModel
    }
    
    func setupForm(){
        addFormRow(label: "Disabled", view: disabledSwitch)
        addFormRow(label: "Surface", view: surfacePickerSelectorView)
        addFormRow(label: "Label Text", view: labelTextField)
        addFormRow(label: "Helper Text Placement", view: helperTextPlacementPickerSelectorView)
        addFormRow(label: "Helper Text", view: helperTextField)
        addFormRow(label: "Error", view: showErrorSwitch)
        addFormRow(label: "Error Text", view: errorTextField)
        addFormRow(label: "Success", view: showSuccessSwitch)
        addFormRow(label: "Success Text", view: successTextField)
        addFormRow(label: "Width", view: widthTextField)

        textEntryField
            .handlerPublisher()
            .sink { [weak self] viewModel in
                self?.model = viewModel
            }.store(in: &subscribers)

        showErrorSwitch
            .publisher(for: .valueChanged)
            .sink { [weak self] sender in
                self?.textEntryField.showError = sender.isOn
            }.store(in: &subscribers)
        
        showSuccessSwitch
            .publisher(for: .valueChanged)
            .sink { [weak self] sender in
                self?.textEntryField.showSuccess = sender.isOn
            }.store(in: &subscribers)

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

        labelTextField
            .textPublisher
            .sink { [weak self] text in
                self?.textEntryField.labelText = text
            }.store(in: &subscribers)
        
        helperTextField
            .textPublisher
            .sink { [weak self] text in
                self?.textEntryField.helperText = text
            }.store(in: &subscribers)

        errorTextField
            .textPublisher
            .sink { [weak self] text in
                self?.textEntryField.errorText = text
            }.store(in: &subscribers)

        widthTextField
            .textPublisher
            .sink { [weak self] width in
                guard let width = Float(width) else { return }
                self?.textEntryField.width = CGFloat(width)
            }.store(in: &subscribers)

    }
    
    func setupModel(model: DefaultTextEntryField) {
        set(with: model)
        
        textEntryField
            .handlerPublisher()
            .sink { [weak self] viewModel in
                self?.model = viewModel
            }.store(in: &subscribers)

        textEntryField
            .publisher(for: .valueChanged)
            .sink { textEntryField in
                if let text = textEntryField.value {
                    print("text entry: \(text)")
                } else {
                    print("text entry: null")
                }
            }.store(in: &subscribers)
 
        //setup UI
        surfacePickerSelectorView.text = model.surface.rawValue
        disabledSwitch.isOn = model.disabled
        labelTextField.text = model.labelText
        helperTextField.text = model.helperText
        showErrorSwitch.isOn = model.showError
        errorTextField.text = model.errorText
        showSuccessSwitch.isOn = model.showSuccess
        successTextField.text = model.successText
        if let width = model.width {
            widthTextField.text = String(describing: width)
        }
    }
    
    override func updateView(viewModel: ModelType) {
        print("\(Self.self) updateView(viewModel)")
        showErrorSwitch.isOn = viewModel.showError
        disabledSwitch.isOn = viewModel.disabled
        textEntryField.set(with: viewModel)
    }
        
    //Picker
    func setupPicker(){
        surfacePickerSelectorView.onPickerDidSelect = {  [weak self] item in
            self?.textEntryField.surface = item
            self?.contentTopView.backgroundColor = item.color
        }
        
        helperTextPlacementPickerSelectorView.onPickerDidSelect = { [weak self] item in
            self?.textEntryField.helperTextPlacement = item
        }
    }
}