//
//  AppCoordinator.swift
//  Meterage
//
//  Created by 203 on 2023/2/1.
//

import Foundation
import UIKit

enum TabBarSelectedType {
    case home
    case sample
    case mine
}

class AppCoordinator {
    static let shared = AppCoordinator()
    private var tabBarController: UITabBarController!
    private var window: UIWindow?

    func appDidFinishLaunching(window: UIWindow) {
        self.window = window
        window.rootViewController = GuideViewController()
    }
    
    private var homePageController: HomePageViewController = {
        HomePageViewController()
    }()

    private var samplePageController: SamplePageViewController = {
        SamplePageViewController()
    }()

    private var minePageController: MineViewController = {
        MineViewController()
    }()
    
    func setTabBarViewController() {
        let home = UINavigationController(rootViewController: homePageController)
        let sample = UINavigationController(rootViewController: samplePageController)
        let mine = UINavigationController(rootViewController: minePageController)
        tabBarController = UITabBarController(nibName: nil, bundle: nil)
        let navControllers = [home, sample, mine]
        tabBarController.viewControllers = navControllers

        for nav in navControllers {
            nav.navigationBar.barTintColor = .mainThemeColor // main bar color
            let dict: [NSAttributedString.Key: Any] = [
                NSAttributedString.Key.foregroundColor: UIColor.white
            ]
            nav.navigationBar.titleTextAttributes = dict // title color
            nav.navigationBar.tintColor = .white // item color
        }

        guard let items = tabBarController.tabBar.items else {
            return
        }
        for (i, m) in zip(items, MenuItemModel.menu) {
            i.title = m.name
            i.image = UIImage(named: m.image)?.withRenderingMode(.alwaysOriginal) // 总是显示原图不被颜色覆盖
            i.selectedImage = UIImage(named: m.selectedImage)?.withRenderingMode(.alwaysOriginal)
        }
        // 改变文字颜色
        UITabBarItem.appearance().setTitleTextAttributes(
                [NSAttributedString.Key.foregroundColor: UIColor.gray],
                for: .normal
        )
        UITabBarItem.appearance().setTitleTextAttributes(
                [NSAttributedString.Key.foregroundColor: UIColor.mainThemeColor],
                for: .selected
        )
        window?.rootViewController = tabBarController
    }

    func setupTabBarIndex(index: Int) {
        tabBarController.selectedIndex = index
    }

    func setupTabBar(type: TabBarSelectedType) {
        switch type {
        case .home:
            tabBarController.selectedIndex = 0
        case .sample:
            tabBarController.selectedIndex = 1
        case .mine:
            tabBarController.selectedIndex = 2
        }
    }
}