[Fix/#57] 다이얼로그 디자인 및 동작 수정

lib/common/navigator/bottom_navigation_bar.dart

@@ -0,0 +1,88 @@
+import 'package:flutter/material.dart';
+import 'package:go_router/go_router.dart';
+import 'package:provider/provider.dart';
+import 'package:cogo/common/navigator/bottom_navigation_bar_view_model.dart';
+import 'package:flutter_svg/flutter_svg.dart';
+
+class ScaffoldWithNestedNavigation extends StatelessWidget {
+  const ScaffoldWithNestedNavigation({
+    Key? key,
+    required this.navigationShell,
+  }) : super(key: key ?? const ValueKey('ScaffoldWithNestedNavigation'));
+
+  final StatefulNavigationShell navigationShell;
+
+  void _goBranch(int index) {
+    navigationShell.goBranch(
+      index,
+      initialLocation: index == navigationShell.currentIndex,
+    );
+  }
+
+  Widget _buildIcon(String assetPath, bool isSelected) {
+    return ColorFiltered(
+      colorFilter: ColorFilter.mode(
+        isSelected ? Colors.white : const Color(0xFF626262),
+        BlendMode.srcIn,
+      ),
+      child: SvgPicture.asset(assetPath, width: 26, height: 26),
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Consumer<BottomNavigationViewModel>(
+      builder: (context, controller, child) => Scaffold(
+        body: navigationShell,
+        bottomNavigationBar: Container(
+          child: ClipRRect(
+            borderRadius: const BorderRadius.only(
+              topLeft: Radius.circular(13.0),
+              topRight: Radius.circular(13.0),
+            ),
+            child: BottomNavigationBar(
+              currentIndex: navigationShell.currentIndex,
+              onTap: (index) {
+                controller.setIndex(index, context); // setIndex 호출
+              },
+              backgroundColor: Colors.black,
+              selectedItemColor: Colors.white,
+              unselectedItemColor: const Color(0xFF626262),
+              selectedLabelStyle: const TextStyle(
+                fontFamily: 'PretendardRegular',
+                fontSize: 12,
+              ),
+              unselectedLabelStyle: const TextStyle(
+                fontFamily: 'PretendardRegular',
+                fontSize: 12,
+              ),
+              items: [
+                BottomNavigationBarItem(
+                  icon: _buildIcon(
+                    'assets/icons/navigator/home.svg',
+                    navigationShell.currentIndex == 0,
+                  ),
+                  label: '홈',
+                ),
+                BottomNavigationBarItem(
+                  icon: _buildIcon(
+                    'assets/icons/navigator/cogo.svg',
+                    navigationShell.currentIndex == 1,
+                  ),
+                  label: '코고',
+                ),
+                BottomNavigationBarItem(
+                  icon: _buildIcon(
+                    'assets/icons/navigator/mypage.svg',
+                    navigationShell.currentIndex == 2,
+                  ),
+                  label: 'MY',
+                ),
+              ],
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+}

lib/common/navigator/bottom_navigation_bar_view_model.dart

@@ -0,0 +1,85 @@
+import 'package:cogo/common/enums/role.dart';
+import 'package:cogo/data/repository/local/secure_storage_repository.dart';
+import 'package:cogo/features/home/home_view_model.dart';
+import 'package:cogo/features/mypage/profile_management/mentor_introduction_screen.dart';
+import 'package:flutter/material.dart';
+import 'package:go_router/go_router.dart';
+import 'package:provider/provider.dart';
+import 'package:cogo/common/widgets/widgets.dart';
+
+class BottomNavigationViewModel extends ChangeNotifier {
+  final SecureStorageRepository _secureStorage = SecureStorageRepository();
+  String? role;
+
+  final GoRouter goRouter;
+  int _selectedIndex = 0;
+
+  int get selectedIndex => _selectedIndex;
+
+  BottomNavigationViewModel(this.goRouter) {
+    _loadPreferences();
+  }
+
+  void _loadPreferences() async {
+    role = await _secureStorage.readRole();
+  }
+
+  void setIndex(int index, BuildContext context) {
+    // HomeViewModel에 접근해서 role과 isIntroductionComplete 값 확인
+    final homeViewModel = Provider.of<HomeViewModel>(context, listen: false);
+
+    if (index == 1 &&
+        role == 'MENTOR' &&
+        !homeViewModel.isIntroductionComplete) {
+      // 조건이 만족하면 다이얼로그를 띄움
+      _showMentorProfileDialog(context);
+    } else {
+      // 페이지 이동 처리
+      _selectedIndex = index;
+      notifyListeners();
+
+      switch (index) {
+        case 0:
+          context.go('/home');
+          break;
+        case 1:
+          context.go('/cogo');
+          break;
+        case 2:
+          context.go('/mypage');
+          break;
+      }
+    }
+  }
+
+  /// 다이얼로그를 띄우는 함수
+  void _showMentorProfileDialog(BuildContext context) {
+    showDialog(
+      context: context,
+      builder: (BuildContext context) {
+        return BasicDialog(
+          title: "멘토 활동을 시작하려면\n프로필 작성을 완료해주세요",
+          subtitle: '입력하신 정보는 하단의 MY에서 수정이 가능해요',
+          imagePath: 'assets/icons/3d_img/heart.png',
+          buttonText: '멘토 프로필 작성하기',
+          onPressed: () => Navigator.of(context).push(_createRoute()),
+        );
+      },
+    );
+  }
+
+  Route _createRoute() {
+    return PageRouteBuilder(
+      pageBuilder: (context, animation, secondaryAnimation) =>
+          const MentorIntroductionScreen(),
+      transitionsBuilder: (context, animation, secondaryAnimation, child) {
+        var tween = Tween(begin: const Offset(0.0, 1.0), end: Offset.zero)
+            .chain(CurveTween(curve: Curves.ease));
+        return SlideTransition(
+          position: animation.drive(tween),
+          child: child,
+        );
+      },
+    );
+  }
+}