//
//  LoaderViewController.swift
//  VDSSample
//
//  Created by Matt Bruce on 7/5/23.
//

import Foundation
import VDS
import UIKit

class LoaderViewController: BaseViewController<Loader>, LoaderLaunchable {    
    
    var isActive = Toggle().with { $0.isOn = true }
    var isFullscreen = Toggle().with { $0.isOn = false }

    override func viewDidLoad() {
        super.viewDidLoad()
        contentTopView.height(constant: 200)
        addContentTopView(view: component)
        setupPicker()
    }
    
    override func setupForm() {
        super.setupForm()
        addFormRow(label: "Surface", view: surfacePickerSelectorView)
        addFormRow(label: "Active", view: .makeWrapper(for: isActive))
        
        let fullScreen = FormSection().with { $0.title = "LoaderLaunchable (separate from Loader)" }
        fullScreen.addFormRow(label: "presentLoader", view: .makeWrapper(for: isFullscreen))
        append(section: fullScreen)
        
        isActive
            .publisher(for: .valueChanged)
            .sink { [weak self] toggle in
                self?.component.isActive = toggle.isOn
            }.store(in: &subscribers)
        
        isFullscreen
            .publisher(for: .valueChanged)
            .sink { [weak self] toggle in
                guard let self else { return }
                self.showLoader(fullScreen: toggle.isOn)
            }.store(in: &subscribers)
    }
    
    func showLoader(fullScreen: Bool) {
        if fullScreen {
            component.isHidden = true
            presentLoader(surface: self.component.surface)
        } else {
            dismissLoader()
            component.isHidden = false
        }
    }
    
    func setupPicker() {
        surfacePickerSelectorView.onPickerDidSelect = { [weak self] item in
            self?.component.surface = item
            self?.contentTopView.backgroundColor = item.color
        }
    }

    public func presentLoader(surface: Surface, size: Int? = nil) {
        if let presenting = UIApplication.topViewController() {
            let viewController = VDS.LoaderViewController(nibName: nil, bundle: nil).with {
                $0.surface = surface
                if let size {
                    $0.size = size
                }
                $0.modalPresentationStyle = .overFullScreen
                $0.modalTransitionStyle = .crossDissolve
            }
            viewController.view
                .publisher(for: UITapGestureRecognizer())
             .sink {[weak self] tap in
                 guard let self else { return }
                 self.isFullscreen.isOn = false
                 self.showLoader(fullScreen: false)
            }.store(in: &subscribers)
            presenting.present(viewController, animated: true)
        }
    }
}