//
//   CheckboxViewController.swift
//  VDSSample
//
//  Created by Matt Bruce on 8/1/22.
//

import Foundation
import UIKit
import VDS
import VDSCoreTokens
import Combine

class  CheckboxItemViewController: BaseViewController<CheckboxItem> {

    var disabledSwitch = Toggle()
    var labelTextField = TextField()
    var childTextField = TextField()
    var errorTextField = TextField()
    var showErrorSwitch = Toggle()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        addContentTopView(view: component)
        
        setupPicker()
        setupModel()
    }
    
    override func setupForm(){
        super.setupForm()
        addActionRow()
        addFormRow(label: "Disabled", view: disabledSwitch, pinTrailing: false)
        addFormRow(label: "Surface", view: surfacePickerSelectorView)
        addFormRow(label: "Label Text", view: labelTextField)
        addFormRow(label: "Child Text", view: childTextField)
        addFormRow(label: "Error", view: showErrorSwitch, pinTrailing: false)
        addFormRow(label: "Error Text", view: errorTextField)
        
        showErrorSwitch.onChange = { [weak self] sender in
            guard let self else { return }
            self.component.showError = sender.isOn
            if self.component.showError != sender.isOn {
                self.showErrorSwitch.isOn = self.component.showError
            }
        }
        
        disabledSwitch.onChange =  { [weak self] sender in
            self?.component.isEnabled = !sender.isOn
        }

        labelTextField
            .textPublisher
            .sink { [weak self] text in
                self?.component.labelText = text
            }.store(in: &subscribers)
        
        childTextField
            .textPublisher
            .sink { [weak self] text in
                self?.component.childText = text
            }.store(in: &subscribers)

        errorTextField
            .textPublisher
            .sink { [weak self] text in
                self?.component.errorText = text
            }.store(in: &subscribers)
        
        component.onChangeActionPublisher("Checkbox", label: actionLabel)
    }
    
    func setupModel() {
        let fullText = "I accept the Terms and Conditions"
        let linkText = "Terms and Conditions"
        component.errorText = "Error Text"
        component.childText = fullText
        
        if let link = ActionLabelAttribute(text: fullText, linkText: linkText) {
            link.action.sink { [weak self] in
                guard let self else { return }
                present(UIAlertController(title: "TextLink", message: "Clicked \(linkText)", preferredStyle: .alert).with{ $0.addAction(.init(title: "OK", style: .default)) }, animated: true)
            }.store(in: &subscribers)
            component.childTextAttributes = [link]
        }

        //setup UI
        surfacePickerSelectorView.text = component.surface.rawValue
        disabledSwitch.isOn = !component.isEnabled
        labelTextField.text = component.labelText
        childTextField.text = component.childText
        showErrorSwitch.isOn = component.showError
        errorTextField.text = component.errorText
        
    }
            
    //Picker
    func setupPicker(){
        surfacePickerSelectorView.onPickerDidSelect = {  [weak self] item in
            self?.component.surface = item
            self?.contentTopView.backgroundColor = item.color
        }
    }
}

extension CheckboxItemViewController: ComponentSampleable {
    static func makeSample() -> ComponentSample {
        let component = Self.makeComponent()
        component.labelText = "Terms and conditions"
        component.childText = "I agree to Verizon's terms and conditions click here"
        component.errorText = "Error Text"

        return ComponentSample(component: component)
    }
}