//
//  MainTabBarViewController.swift
//  Tusker
//
//  Created by  Shadowfactson 8/21/18.
//  Copyright © 2018 Shadowfacts. All rights reserved.
//

import UIKit

class MainTabBarViewController: UITabBarController {

    lazy var router = AppRouter(root: self)
    
    override func viewDidLoad() {
        super.viewDidLoad()

        updateTabs(animated: false)
    }
    
    func updateTabs(animated: Bool) {
        let currentTabs = Preferences.shared.tabs.filter { $1 >= 0 }.sorted { $1.1 > $0.1 }.map { $0.key }
        let viewControllers: [UIViewController] = currentTabs.map { (tab) in
            if tab == .preferences, let preferences = selectedViewController {
                return preferences
            } else {
                return embedInNavigationController(createVC(for: tab))
            }
        }
        setViewControllers(viewControllers, animated: animated)
    }
    
    func createVC(for tab: Tab) -> UIViewController {
        switch tab {
        case .home:
            return TimelineTableViewController(for: .home, router: router)
        case .federated:
            return TimelineTableViewController(for: .public(local: false), router: router)
        case .local:
            return TimelineTableViewController(for: .public(local: true), router: router)
        case .myProfile:
            let myProfile = ProfileTableViewController(accountID: nil, router: router)
            myProfile.title = "My Profile"
            MastodonController.getOwnAccount { (account) in
                myProfile.accountID = account.id
            }
            return myProfile
        case .notifications:
            return NotificationsTableViewController(router: router)
        case .preferences:
            return PreferencesTableViewController.create()
        }
    }
    
    func embedInNavigationController(_ vc: UIViewController) -> UINavigationController {
        if let vc = vc as? UINavigationController {
            return vc
        } else {
            return UINavigationController(rootViewController: vc)
        }
    }
    
}