//
//  TiletViewController.swift
//  VDSSample
//
//  Created by Matt Bruce on 12/19/22.
//

import Foundation
import UIKit
import VDS
import VDSColorTokens
import Combine

class TiletViewController: BaseViewController {
    
    lazy var titleTextStylePickerSelectorView = {
        PickerSelectorView(title: "",
                           picker: self.picker,
                           items: TiletTitleModel.TitleTypographicalStyle.allCases.sorted{ $0.rawValue < $1.rawValue })
    }()
    
    lazy var otherTextStylePickerSelectorView = {
        PickerSelectorView(title: "",
                           picker: self.picker,
                           items: TiletSubTitleModel.SubTitleTypographicalStyle.allCases.sorted{ $0.rawValue < $1.rawValue })
    }()
    
    lazy var subtitleColorPickerSelectorView = {
        PickerSelectorView<Use>(title: "",
                                 picker: self.picker,
                                 items: [.primary, .secondary])
    }()

    var clickableSwitch = Toggle()
    var clickableCancel: AnyCancellable?

    var titleTextField = TextField()
    var subTitleTextField = TextField()
    var widthTextField = NumericField()
    var heightTextField = NumericField()
    var textPercentageTextField = NumericField()
    var textWidthTextField = NumericField()

    var showDescriptionIconSwitch = Toggle()
    var showDirectionalIconSwitch = Toggle()
    var badgeTextField = TextField()
    var tilet = Tilet()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        addContentTopView(view: .makeWrapper(for: tilet))
        
        setupForm()
        setupPicker()
        setupModel()
    }
    
    override func allTextFields() -> [TextField]? { [titleTextField, subTitleTextField, widthTextField, heightTextField, textWidthTextField, textPercentageTextField, badgeTextField] }

    func setupForm(){
        addFormRow(label: "Surface", view: surfacePickerSelectorView)
        addFormRow(label: "Clickable", view: .makeWrapper(for: clickableSwitch))

        addFormRow(label: "Title Style", view: titleTextStylePickerSelectorView)
        addFormRow(label: "Other Style", view: otherTextStylePickerSelectorView)
        
        addFormRow(label: "Title Text", view: titleTextField)
        addFormRow(label: "Subtitle Color", view: subtitleColorPickerSelectorView)
        addFormRow(label: "Subtitle Text", view: subTitleTextField)
        addFormRow(label: "Width", view: widthTextField)
        //addFormRow(label: "Height", view: heightTextField)
        addFormRow(label: "Text Width", view: textWidthTextField)
        addFormRow(label: "Text Percentage", view: badgeTextField)
        addFormRow(label: "Badge Text", view: badgeTextField)
        addFormRow(label: "Description Icon", view: .makeWrapper(for: showDescriptionIconSwitch))
        addFormRow(label: "Directional Icon", view: .makeWrapper(for: showDirectionalIconSwitch))
        
        clickableSwitch
            .publisher(for: .valueChanged)
            .sink { [weak self] sender in
                if sender.isOn {
                    self?.clickableCancel = self?.tilet
                        .publisher(for: .touchUpInside)
                        .sink(receiveValue: { _ in
                            print("you click on me!")
                        })
                } else {
                    self?.clickableCancel?.cancel()
                    self?.clickableCancel = nil
                }
            }.store(in: &subscribers)

        widthTextField
            .textPublisher
            .sink { [weak self] text in
                if let n = NumberFormatter().number(from: text) {
                    self?.tilet.width = CGFloat(truncating: n)
                }
            }.store(in: &subscribers)

        heightTextField
            .textPublisher
            .sink { [weak self] text in
                if let n = NumberFormatter().number(from: text) {
                    self?.tilet.height = CGFloat(truncating: n)
                } else {
                    self?.tilet.height = nil
                }
            }.store(in: &subscribers)

        textWidthTextField
            .textPublisher
            .sink { [weak self] text in
                guard let self else { return }
                if let n = NumberFormatter().number(from: text), n.floatValue > 50.0 {
                    self.tilet.textWidth = CGFloat(truncating: n)
                    self.textPercentageTextField.text = ""
                } else {
                    self.tilet.textWidth = nil
                }
            }.store(in: &subscribers)
        
        textPercentageTextField
            .textPublisher
            .sink { [weak self] text in
                if let n = NumberFormatter().number(from: text), n.intValue > 15 && n.intValue <= 100 {
                    self?.tilet.textPercentage = CGFloat(truncating: n)
                    self?.textWidthTextField.text = ""
                } else {
                    self?.tilet.textPercentage = nil
                }
            }.store(in: &subscribers)

        titleTextField
            .textPublisher
            .sink { [weak self] text in
                self?.setTitleModel()
            }.store(in: &subscribers)

        subTitleTextField
            .textPublisher
            .sink { [weak self] text in
                self?.setSubTitleModel()
            }.store(in: &subscribers)
                
        badgeTextField
            .textPublisher
            .sink { [weak self] text in
                self?.setBadgeModel()
            }.store(in: &subscribers)
        
        showDescriptionIconSwitch
            .publisher(for: .valueChanged)
            .sink { [weak self] sender in
                if sender.isOn {
                    self?.showDirectionalIconSwitch.isOn = false
                    self?.tilet.descriptiveIconModel = .init(size: .medium, surface: .dark)
                } else {
                    self?.tilet.descriptiveIconModel = nil
                }
            }.store(in: &subscribers)

        showDirectionalIconSwitch
            .publisher(for: .valueChanged)
            .sink { [weak self] sender in
                if sender.isOn {
                    self?.showDescriptionIconSwitch.isOn = false
                    self?.tilet.directionalIconModel = .init(size: .medium, surface: .dark)
                } else {
                    self?.tilet.directionalIconModel = nil
                }
            }.store(in: &subscribers)

    }
        
    func setupModel() {
        let titleModel = TiletTitleModel(text: "Save $XX on your monthly bill.")
        let subTitleModel = TiletSubTitleModel(text: "Enroll in Auto Pay & paper-free billing to save on your monthly bill.")
        
        tilet.surface = .light
        tilet.titleModel = titleModel
        tilet.subTitleModel = subTitleModel

        //setup UI
        surfacePickerSelectorView.text = tilet.surface.rawValue
        otherTextStylePickerSelectorView.text = subTitleModel.typographicalStyle.rawValue
        titleTextStylePickerSelectorView.text = titleModel.typographicalStyle.rawValue
        subtitleColorPickerSelectorView.text = subTitleModel.textColor.rawValue
        titleTextField.text = titleModel.text
        subTitleTextField.text = subTitleModel.text
        widthTextField.text = tilet.width != nil ? "\(tilet.width!)" : ""
    }
    
    //sub models
    func setBadgeModel() {
        if let text = badgeTextField.text, !text.isEmpty {
            tilet.badgeModel = TiletBadgeModel(text: text)
        } else {
            tilet.badgeModel = nil
        }
    }
    
    func setTitleModel() {
        if let text = titleTextField.text, !text.isEmpty {
            tilet.titleModel = TiletTitleModel(text: text, typographicalStyle: titleTextStylePickerSelectorView.selectedItem)
        } else {
            tilet.titleModel = nil
        }
    }
    
    func setSubTitleModel() {
        if let text = subTitleTextField.text, !text.isEmpty {
            tilet.subTitleModel = TiletSubTitleModel(text: text, typographicalStyle: otherTextStylePickerSelectorView.selectedItem)
        } else {
            tilet.subTitleModel = nil
        }
    }
        
    //Picker
    func setupPicker(){
        surfacePickerSelectorView.onPickerDidSelect = {  [weak self] item in
            self?.tilet.surface = item
            self?.contentTopView.backgroundColor = item.color
        }
        
        titleTextStylePickerSelectorView.onPickerDidSelect = {  [weak self] item in
            self?.setTitleModel()
        }

        otherTextStylePickerSelectorView.onPickerDidSelect = {  [weak self] item in
            self?.setSubTitleModel()
        }
        
        subtitleColorPickerSelectorView.onPickerDidSelect  = {  [weak self] item in
            self?.setSubTitleModel()
        }
    }
}