//
//  SeismicCardSettingsViewController.swift
//  Earthquake Network
//
//  Created by Busi Andrea on 26/09/2020.
//  Copyright © 2020 Earthquake Network. All rights reserved.
//

import UIKit

protocol SeismicCardSettingsViewControllerDelegate: class {
    func seismicCardSettingsDidComplete(_ controller: SeismicCardSettingsViewController)
}


class SeismicCardSettingsViewController: UIViewController {

    weak var delegate: SeismicCardSettingsViewControllerDelegate?
    
    // MARK: - Internal
    
    @IBOutlet private weak var containerView: UIView!
    @IBOutlet private weak var informationDistanceSwitch: UISwitch!
    @IBOutlet private weak var informationLocationSwitch: UISwitch!
    @IBOutlet private weak var informationPopulationSwitch: UISwitch!
    
    private var informations = [SeismicNetworkTableViewCell.InformationType]()
    
    // MARK: - View Lifecycle
    
    override func viewDidLoad() {
        super.viewDidLoad()

        if let saved = UserDefaults.standard.array(forKey: EQNUserDefaultKeySesmicInformations) as? [Int] {
            informations = saved.compactMap { SeismicNetworkTableViewCell.InformationType(rawValue: $0) }
        }
        
        setupUI()
        updateUI()
    }
    

    // MARK: - Private
    
    private func setupUI() {
        containerView.layer.cornerRadius = AppTheme.shared.borderCornerRadius
        containerView.layer.masksToBounds = true
    }
    
    private func updateUI() {
        informationDistanceSwitch.isOn = informations.contains(.distance)
        informationLocationSwitch.isOn = informations.contains(.coordinate)
        informationPopulationSwitch.isOn = informations.contains(.population)
    }
    
    private func toggle(information: SeismicNetworkTableViewCell.InformationType) {
        if informations.contains(information) {
            informations.removeAll(where: { $0 == information })
        } else {
            informations.append(information)
        }
    }
    
    // MARK: - Action
    
    @IBAction func switchChanged(_ sender: UISwitch) {
        if sender == informationDistanceSwitch {
            toggle(information: .distance)
        } else if sender == informationLocationSwitch {
            toggle(information: .coordinate)
        } else if sender == informationPopulationSwitch {
            toggle(information: .population)
        }
        
        UserDefaults.standard.set(informations.map { $0.rawValue }, forKey: EQNUserDefaultKeySesmicInformations)
        updateUI()
    }
    
    @IBAction func closeTapped(_ sender: UISwitch) {
        delegate?.seismicCardSettingsDidComplete(self)
        dismiss(animated: true, completion: nil)
    }
}