//
//  InputStepperViewController.swift
//  VDSSample
//
//  Created by Kanamarlapudi, Vasavi on 24/06/24.
//

import Foundation
import UIKit
import VDS
import VDSCoreTokens
import Combine

class InputStepperViewController: BaseViewController<InputStepper> {

    var controlWidthTextField = NumericField()
    var defaultValueField = NumericField()
    var maxValueTextField = NumericField()
    var minValueTextField = NumericField()
    var trailingTextField = TextField()

    var widthTextField = NumericField()
    var disabledSwitch = Toggle()
    var readOnlySwitch = Toggle()
    var requiredSwitch = Toggle()
    var labelTextField = TextField()
    var showErrorSwitch = Toggle()
    var errorTextField = TextField()
    var helperTextField = TextField()
    var tooltipTitleTextField = TextField()
    var tooltipContentTextField = TextField()

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

    
    override func viewDidLoad() {
        super.viewDidLoad()
        addContentTopView(view: component)
        setupPicker()
        setupModel()
    }
    
    override func setupForm(){
        super.setupForm()
        
        addFormRow(label: "Surface", view: surfacePickerSelectorView)
        addFormRow(label: "Control Width", view: controlWidthTextField)
        addFormRow(label: "Default Value", view: defaultValueField)
        addFormRow(label: "Max Value", view: maxValueTextField)
        addFormRow(label: "Min Value", view: minValueTextField)
        addFormRow(label: "Trailing Text", view: trailingTextField)

        addFormRow(label: "Width", view: widthTextField)
        addFormRow(label: "Disabled", view: disabledSwitch)
        addFormRow(label: "Read Only", view: readOnlySwitch)
        addFormRow(label: "Required", view: requiredSwitch)
        addFormRow(label: "Label Text", view: labelTextField)
        addFormRow(label: "Error", view: showErrorSwitch)
        addFormRow(label: "Error Text", view: errorTextField)
        addFormRow(label: "Helper Text Placement", view: helperTextPlacementPickerSelectorView)
        addFormRow(label: "Helper Text", view: helperTextField)
        addFormRow(label: "Tooltip Title", view: tooltipTitleTextField)
        addFormRow(label: "Tooltip Content", view: tooltipContentTextField)

        requiredSwitch.onChange = { [weak self] sender in
            self?.component.isRequired = sender.isOn
        }

        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
        }
        
        readOnlySwitch.onChange = { [weak self] sender in
            self?.component.isReadOnly = sender.isOn
        }

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

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

//        widthTextField
//            .numberPublisher
//            .sink { [weak self] number in
//                self?.component.width = number?.cgFloatValue
//            }.store(in: &subscribers)     
        
        tooltipTitleTextField
            .textPublisher
            .sink { [weak self] text in
                self?.updateTooltip()
            }.store(in: &subscribers)

        tooltipContentTextField
            .textPublisher
            .sink { [weak self] text in
                self?.updateTooltip()
            }.store(in: &subscribers)
    }
    
    func updateTooltip() {
        let title = tooltipTitleTextField.text ?? ""
        let content = tooltipContentTextField.text ?? ""
        
        component.tooltipModel = !title.isEmpty || !content.isEmpty ? .init(title: title,
                                                                            content: content) : nil
    }
    
    //Picker
    func setupPicker(){
        surfacePickerSelectorView.onPickerDidSelect = {  [weak self] item in
            self?.component.surface = item
            self?.contentTopView.backgroundColor = item.color
        }
        
        helperTextPlacementPickerSelectorView.onPickerDidSelect = { [weak self] item in
            self?.component.helperTextPlacement = item
        }
    }
    
    func setupModel() {
        component.labelText = "Quantity"
        component.helperText = "Add up to 99 lines."
        component.errorText = "You must choose a number of lines before advancing to the next step."
        component.defaultValue = 2
        component.trailingText = "lines"
        

//        component.onChange = { component in
//            if let text = component.value {
//                print("text entry: \(text)")
//            } else {
//                print("text entry: null")
//            }
//        }

        //setup UI
        surfacePickerSelectorView.text = component.surface.rawValue
        helperTextPlacementPickerSelectorView.text = component.helperTextPlacement.rawValue
    }
}