//
//  DropdownSelectViewController.swift
//  VDSSample
//
//  Created by Kanamarlapudi, Vasavi on 28/03/24.
//

import Foundation
import VDS

class DropdownSelectViewController: BaseViewController<DropdownSelect> {
    
    lazy var helperTextPlacementPickerSelectorView = {
        PickerSelectorView(title: "",
                           picker: self.picker,
                           items: InputField.HelperTextPlacement.allCases)
    }()

    var disabledSwitch = Toggle()
    var requiredSwitch = Toggle()
    var labelTextField = TextField()
    var errorTextField = TextField()
    var helperTextField = TextField()
    var inlineLabelSwitch = Toggle()
    var readonlySwitch = Toggle()
    var transparentBgSwitch = Toggle()
    var errorSwitch = Toggle()
    var tooltipTitleTextField = TextField()
    var tooltipContentTextField = TextField()
    var widthTextField = NumericField()
    var optionsSwitch = Toggle()
    var moreOptions: [DropdownSelect.DropdownOptionModel] = [
        .init(text: "Alabama"),
        .init(text: "Alaska"),
        .init(text: "Arizona"),
        .init(text: "Arkansas"),
        .init(text: "California"),
        .init(text: "Colorado"),
        .init(text: "Connecticut"),
        .init(text: "Delaware"),
        .init(text: "District of Columbia"),
        .init(text: "Florida"),
        .init(text: "Georgia"),
        .init(text: "Hawaii"),
        .init(text: "Idaho"),
        .init(text: "Illinois"),
        .init(text: "Indiana"),
        .init(text: "Iowa")
    ]
    
    var some: [DropdownSelect.DropdownOptionModel] = [
        .init(text: "Alabama"),
        .init(text: "Alaska"),
        .init(text: "Arizona"),
        .init(text: "Arkansas")
    ]
    
    override func viewDidLoad() {
        super.viewDidLoad()
        addContentTopView(view: component)
        setupModel()
        setupPicker()
    }
        
    override func setupForm(){
        addFormRow(label: "Surface", view: surfacePickerSelectorView)
        addFormRow(label: "Disabled", view: disabledSwitch)
        addFormRow(label: "Required", view: requiredSwitch)
        addFormRow(label: "Label Text", view: labelTextField)
        addFormRow(label: "Helper Text Placement", view: helperTextPlacementPickerSelectorView)
        addFormRow(label: "Helper Text", view: helperTextField)
        addFormRow(label: "Inline Label", view: .makeWrapper(for: inlineLabelSwitch))
        addFormRow(label: "Readonly", view: readonlySwitch)
        addFormRow(label: "Transparent Background", view: transparentBgSwitch)
        addFormRow(label: "Error", view: .makeWrapper(for: errorSwitch))
        addFormRow(label: "Error Text", view: errorTextField)
        addFormRow(label: "Width", view: widthTextField)
        addFormRow(label: "ToolTip Title", view: tooltipTitleTextField)
        addFormRow(label: "ToolTip Content", view: tooltipContentTextField)
        addFormRow(label: "More Options", view: optionsSwitch)

        disabledSwitch.onChange = { [weak self] sender in
            self?.component.isEnabled = !sender.isOn
        }
        
        requiredSwitch.onChange = { [weak self] sender in
            self?.component.isRequired = sender.isOn
        }
                
        optionsSwitch.onChange =  { [weak self] sender in
            guard let self else { return }
            self.component.options = sender.isOn ? self.moreOptions : self.some
        }
        
        readonlySwitch.onChange = { [weak self] sender in
            self?.component.isReadOnly = sender.isOn
        }

        transparentBgSwitch.onChange = { [weak self] sender in
            self?.component.transparentBackground = sender.isOn
        }

        errorSwitch
            .publisher(for: .valueChanged)
            .sink { [weak self] sender in
                guard let self else { return }
                component.showError = sender.isOn
                if component.showError != sender.isOn {
                    self.errorSwitch.isOn = self.component.showError
                }
            }.store(in: &subscribers)
        
        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)
        
        inlineLabelSwitch
            .publisher(for: .valueChanged)
            .sink { [weak self] sender in
                guard let self else { return }
                self.component.showInlineLabel = sender.isOn
            }.store(in: &subscribers)
    }
    
    func setupModel() {
        component.labelText = "Street Address"
        component.helperText = "For example: 123 Verizon St"
        component.errorText = "Enter a valid address."
        component.tooltipModel = .init(title: "Check the formatting of your address", content:"House/Building number then street name")
        component.options = moreOptions
        
        /// callback to know which option chose
        component.onChange = { dropdown in
            guard let option = dropdown.selectedItem, let index = dropdown.selectId else { print("nothing selected"); return }
            print("selected index: \(index) text: \(option.text) value: \(option.value)")
        }
        
        //setup UI
        disabledSwitch.isOn = !component.isEnabled
        requiredSwitch.isOn = component.isRequired
        surfacePickerSelectorView.text = component.surface.rawValue
        labelTextField.text = component.labelText
        helperTextPlacementPickerSelectorView.text = component.helperTextPlacement.rawValue
        helperTextField.text = component.helperText
        readonlySwitch.isOn = false
        transparentBgSwitch.isOn = false
        errorSwitch.isOn = component.showError
        errorTextField.text = component.errorText
        tooltipTitleTextField.text = component.tooltipModel?.title
        tooltipContentTextField.text = component.tooltipModel?.content
        optionsSwitch.isOn = true
    }
    
    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 updateTooltip() {
        let title = tooltipTitleTextField.text ?? ""
        let content = tooltipContentTextField.text ?? ""
        
        component.tooltipModel = !title.isEmpty || !content.isEmpty ? .init(title: title,
                                                                            content: content) : nil
    }
}

extension DropdownSelectViewController: ComponentSampleable {
    static func makeSample() -> ComponentSample {
        let component = Self.makeComponent()
        component.labelText = "Street Address"
        component.helperText = "For example: 123 Verizon St"
        component.errorText = "Enter a valid address."
        component.tooltipModel = .init(title: "Check the formatting of your address", content:"House/Building number then street name")
        component.options = [
            .init(text: "Alabama"),
            .init(text: "Alaska"),
            .init(text: "Arizona"),
            .init(text: "Arkansas")
        ]
        return ComponentSample(component: component)
    }
}