//
//  AVTabBarController.m
//  AVDemo
//

#import "AVTabBarController.h"
#import "AVHomeViewController.h"
#import "AVCallViewController.h"
#import "AVVodListViewController.h"
#import "AVSettingsViewController.h"
#import "AVLoginViewController.h"
#import "AVUserManager.h"

@interface AVTabBarController () <AVLoginViewControllerDelegate>
@end

@implementation AVTabBarController

- (void)viewDidLoad {
    [super viewDidLoad];

    // Create Home tab
    AVHomeViewController *homeVC = [[AVHomeViewController alloc] init];
    UINavigationController *homeNav = [[UINavigationController alloc] initWithRootViewController:homeVC];
    homeNav.tabBarItem = [[UITabBarItem alloc] initWithTitle:@"首页"
                                                        image:[UIImage systemImageNamed:@"house"]
                                                selectedImage:[UIImage systemImageNamed:@"house.fill"]];

    // Create VOD tab
    AVVodListViewController *vodVC = [[AVVodListViewController alloc] init];
    UINavigationController *vodNav = [[UINavigationController alloc] initWithRootViewController:vodVC];
    vodNav.tabBarItem = [[UITabBarItem alloc] initWithTitle:@"点播"
                                                       image:[UIImage systemImageNamed:@"play.rectangle"]
                                               selectedImage:[UIImage systemImageNamed:@"play.rectangle.fill"]];

    // Create Call tab
    AVCallViewController *callVC = [[AVCallViewController alloc] init];
    UINavigationController *callNav = [[UINavigationController alloc] initWithRootViewController:callVC];
    callNav.tabBarItem = [[UITabBarItem alloc] initWithTitle:@"通话"
                                                        image:[UIImage systemImageNamed:@"phone"]
                                                selectedImage:[UIImage systemImageNamed:@"phone.fill"]];

    // Create Settings tab
    AVSettingsViewController *settingsVC = [[AVSettingsViewController alloc] init];
    UINavigationController *settingsNav = [[UINavigationController alloc] initWithRootViewController:settingsVC];
    settingsNav.tabBarItem = [[UITabBarItem alloc] initWithTitle:@"设置"
                                                           image:[UIImage systemImageNamed:@"gearshape"]
                                                   selectedImage:[UIImage systemImageNamed:@"gearshape.fill"]];

    // Set view controllers
    self.viewControllers = @[homeNav, vodNav, callNav, settingsNav];

    // Customize tab bar appearance
    self.tabBar.tintColor = [UIColor systemBlueColor];
}

- (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];
    
    // 检查登录状态
    [self checkLoginStatus];
}

#pragma mark - Login Management

- (void)checkLoginStatus {
    // 如果未登录，显示登录页面
    if (![AVUserManager sharedManager].isLoggedIn) {
        [self showLoginViewController];
    }
}

- (void)showLoginViewController {
    AVLoginViewController *loginVC = [[AVLoginViewController alloc] init];
    loginVC.delegate = self;
    loginVC.modalPresentationStyle = UIModalPresentationFullScreen;
    
    // 确保不会重复弹出登录页面
    if (self.presentedViewController == nil) {
        [self presentViewController:loginVC animated:YES completion:nil];
    }
}

#pragma mark - AVLoginViewControllerDelegate

- (void)loginViewControllerDidLogin:(AVLoginViewController *)controller {
    // 登录成功，关闭登录页面
    [controller dismissViewControllerAnimated:YES completion:^{
        NSLog(@"✅ 登录成功，已进入应用");
    }];
}

#pragma mark - Orientation Support (将方向决策交给顶层 ViewController)

- (BOOL)shouldAutorotate {
    // 返回当前显示的 NavigationController 的顶层 VC 的设置
    UINavigationController *nav = (UINavigationController *)self.selectedViewController;
    if ([nav isKindOfClass:[UINavigationController class]]) {
        return [nav.topViewController shouldAutorotate];
    }
    return [self.selectedViewController shouldAutorotate];
}

- (UIInterfaceOrientationMask)supportedInterfaceOrientations {
    // 返回当前显示的 NavigationController 的顶层 VC 的设置
    UINavigationController *nav = (UINavigationController *)self.selectedViewController;
    if ([nav isKindOfClass:[UINavigationController class]]) {
        return [nav.topViewController supportedInterfaceOrientations];
    }
    return [self.selectedViewController supportedInterfaceOrientations];
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {
    // 返回当前显示的 NavigationController 的顶层 VC 的设置
    UINavigationController *nav = (UINavigationController *)self.selectedViewController;
    if ([nav isKindOfClass:[UINavigationController class]]) {
        return [nav.topViewController preferredInterfaceOrientationForPresentation];
    }
    return [self.selectedViewController preferredInterfaceOrientationForPresentation];
}

@end