keyboard/keyBoard/Class/Base/VC/BaseNavigationController.m

//
//  BaseNavigationController.m
//  keyBoard
//
//  Created by Mac on 2025/10/29.
//

#import "BaseNavigationController.h"

@interface BaseNavigationController () <UIGestureRecognizerDelegate>

@end

@implementation BaseNavigationController

- (void)viewDidLoad {
  [super viewDidLoad];
  // 统一返回箭头样式与颜色
  UIImage *backImg = [UIImage imageNamed:@"back_black_icon"];
  if (backImg) {
    self.navigationBar.backIndicatorImage = backImg;
    self.navigationBar.backIndicatorTransitionMaskImage = backImg;
  }
  self.navigationBar.tintColor = [UIColor blackColor]; // 箭头/按钮的着色

  if (@available(iOS 14.0, *)) {
    self.navigationBar.topItem.backButtonDisplayMode =
        UINavigationItemBackButtonDisplayModeMinimal;
  }

  // 统一开启“边缘右滑返回”（interactivePopGestureRecognizer
  // 在自定义导航栏/隐藏系统导航栏场景下可能失效）
  if (self.interactivePopGestureRecognizer) {
    self.interactivePopGestureRecognizer.delegate = self;
    self.interactivePopGestureRecognizer.enabled = YES;
  }
}

- (void)pushViewController:(UIViewController *)viewController
                  animated:(BOOL)animated {
  if (self.viewControllers.count > 0) {
    viewController.hidesBottomBarWhenPushed = true;
    UIViewController *prev = self.topViewController;
    if (@available(iOS 14.0, *)) {
      prev.navigationItem.backButtonDisplayMode =
          UINavigationItemBackButtonDisplayModeMinimal;
    } else {
      prev.navigationItem.backBarButtonItem =
          [[UIBarButtonItem alloc] initWithTitle:@""
                                           style:UIBarButtonItemStylePlain
                                          target:nil
                                          action:nil];
    }
  }
  [super pushViewController:viewController animated:animated];
}

#pragma mark - UIGestureRecognizerDelegate

- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer {
  if (gestureRecognizer == self.interactivePopGestureRecognizer) {
    return self.viewControllers.count > 1;
  }
  return YES;
}

/// Push 一个 VC，若栈中已存在相同 class 的 VC，则先移除旧的再 push 新的。
- (void)kb_pushViewControllerRemovingSameClass:
            (UIViewController *)viewController
                                      animated:(BOOL)animated {
  if (!viewController) {
    return;
  }

  NSMutableArray<UIViewController *> *stack = self.viewControllers.mutableCopy;
  // 移除同 class 的旧 VC（通常只有一个，这里按需移除第一个）
  UIViewController *toRemove = nil;
  for (UIViewController *vc in stack) {
    if ([vc isKindOfClass:[viewController class]]) {
      toRemove = vc;
      break;
    }
  }
  if (toRemove) {
    [stack removeObject:toRemove];
  }

  // 追加新 VC
  [stack addObject:viewController];

  // 对前一个 VC 做统一的返回按钮样式处理，与 pushViewController: 保持一致
  if (stack.count > 1) {
    viewController.hidesBottomBarWhenPushed = YES;
    UIViewController *prev = stack[stack.count - 2];
    if (@available(iOS 14.0, *)) {
      prev.navigationItem.backButtonDisplayMode =
          UINavigationItemBackButtonDisplayModeMinimal;
    } else {
      prev.navigationItem.backBarButtonItem =
          [[UIBarButtonItem alloc] initWithTitle:@""
                                           style:UIBarButtonItemStylePlain
                                          target:nil
                                          action:nil];
    }
  }

  [self setViewControllers:stack animated:animated];
}

@end