//
//  Coordinator.swift
//  PaiAi
//
//  Created by ffib on 2018/12/6.
//  Copyright © 2018 yb. All rights reserved.
//

import Foundation

protocol Coordinator {
    
}


final class AppCoordinator {
    
    fileprivate enum CoordinatorKey: String {
        case home = "home"
        case message = "message"
        case mine = "mine"
    }
    
    fileprivate var coordinators = [CoordinatorKey: Coordinator]()
    var containerViewController: ContainerViewController
    
    init(_ containerVC: ContainerViewController) {
        self.containerViewController = containerVC
        self.containerViewController.delegate = self
        self.containerViewController.loadViewIfNeeded()
        
        let homeVC = UIStoryboard.mainBoard.instantiateHomeViewController()
        let messageVC = UIStoryboard.messageBoard.instantiateMessageTypeViewController()
        self.containerViewController.pageItems = [PageItem(title: "首页",
                                                           viewController: homeVC),
                                                  PageItem(title: "消息",
                                                           viewController: messageVC)]
        
        let homeCoordinator = HomeCoordinator(homeVC)
        let messageCoordinator = MessageCoordinator(messageVC)
        
        coordinators[.home] = homeCoordinator
        coordinators[.message] = messageCoordinator
    }
    
    private func configurationMineCoordinator() {
        let mineVC = UIStoryboard.mineBoard.instantiateMineViewController()
        let mineCoordinator = MineCoordinator(mineVC)
        guard let navView = containerViewController.navigationController?.view else { return }
        mineVC.view.frame = navView.bounds
        containerViewController.navigationController?.addChildViewController(mineVC)
        navView.addSubview(mineVC.view)
        
        coordinators[.mine] = mineCoordinator
    }
    
    func start() {
        
    }
}

extension AppCoordinator: ContainerViewControllerDelegate {
    func showMineMenu() {
        configurationMineCoordinator()
    }
}

extension UIStoryboard {
    fileprivate func instantiateHomeViewController() -> HomeViewController {
        let homeVC = instantiateController(HomeViewController.self)
        return homeVC
    }
    
    fileprivate func instantiateMessageTypeViewController() -> MessageTypeViewController {
        let messageTypeVC = instantiateController(MessageTypeViewController.self)
        return messageTypeVC
    }
    
    fileprivate func instantiateMineViewController() -> MineViewController {
        let mineVC = instantiateController(MineViewController.self)
        return mineVC
    }
}