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//
//  SettingsViewController.swift
//  MullvadVPN
//
//  Created by pronebird on 20/03/2019.
//  Copyright © 2019 Mullvad VPN AB. All rights reserved.
//

import Foundation
import UIKit

protocol SettingsViewControllerDelegate: AnyObject {
    func settingsViewControllerDidFinish(_ controller: SettingsViewController)
}

class SettingsViewController: UITableViewController, SettingsDataSourceDelegate {

    weak var delegate: SettingsViewControllerDelegate?

    override var preferredStatusBarStyle: UIStatusBarStyle {
        return .lightContent
    }

    private let dataSource = SettingsDataSource()

    init() {
        super.init(style: .grouped)
    }

    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }

    override func viewDidLoad() {
        super.viewDidLoad()

        navigationItem.title = NSLocalizedString("NAVIGATION_TITLE", tableName: "Settings", comment: "Navigation title")
        navigationItem.largeTitleDisplayMode = .always
        navigationItem.rightBarButtonItem = UIBarButtonItem(barButtonSystemItem: .done, target: self, action: #selector(handleDismiss))

        tableView.backgroundColor = .secondaryColor
        tableView.separatorColor = .secondaryColor
        tableView.rowHeight = UITableView.automaticDimension
        tableView.estimatedRowHeight = 60

        dataSource.tableView = tableView
        dataSource.delegate = self
    }

    // MARK: - IBActions

    @IBAction func handleDismiss() {
        delegate?.settingsViewControllerDidFinish(self)
    }

    // MARK: - SettingsDataSourceDelegate

    func settingsDataSource(_ dataSource: SettingsDataSource, didSelectItem item: SettingsDataSource.Item) {
        guard let route = item.navigationRoute else { return }

        let settingsNavigationController = navigationController as? SettingsNavigationController

        settingsNavigationController?.navigate(to: route, animated: true)
    }

}

extension SettingsDataSource.Item {
    var navigationRoute: SettingsNavigationRoute? {
        switch self {
        case .account:
            return .account
        case .preferences:
            return .preferences
        case .wireguardKey:
            return .wireguardKeys
        case .version:
            return nil
        case .problemReport:
            return .problemReport
        }
    }
}