[BOOK-124] refactor: DelegateNavigator 개선

isBottomNavigationScreenClasses -> 너무 긴 명수명이기도 하고, BottomNavigationScreen이란 컴포넌트를 현재 사용하고 있기 때문에, 의미가 중의적이될 수 있어 isMainTabScreen이라는 함수로 변경

goTo, resetRoot를 제외한 pop/peek/peekBackStack함수의 경우 항상 childNavigator를 사용하기 때문에 분기처리가 의미없다고 생각하여 분기처리 코드 제거

Author: easyhooon

feature/main/src/main/kotlin/com/ninecraft/booket/feature/main/screens/DelegateNavigator.kt

@@ -10,55 +10,39 @@ class DelegateNavigator(
     private val childNavigator: Navigator,
     private val rootNavigator: Navigator,
 ) : Navigator {
-    private val bottomNavigationScreenClasses = MainTab.entries.map { it.screen::class }.toSet()
-
-    private fun Screen.isBottomNavigationScreen(): Boolean =
-        this::class in bottomNavigationScreenClasses
+    private fun isMainTabScreen(screen: Screen): Boolean {
+        return MainTab.entries.any { it.screen::class == screen::class }
+    }
 
     override fun goTo(screen: Screen): Boolean {
-        return if (screen.isBottomNavigationScreen()) {
+        return if (isMainTabScreen(screen)) {
             childNavigator.goTo(screen)
         } else {
             rootNavigator.goTo(screen)
         }
     }
 
     override fun pop(result: PopResult?): Screen? {
-        val currentScreen = childNavigator.peek()
-        return if (currentScreen?.isBottomNavigationScreen() == true) {
-            childNavigator.pop(result)
-        } else {
-            rootNavigator.pop(result)
-        }
+        return childNavigator.pop(result)
     }
 
     override fun peek(): Screen? {
-        val childScreen = childNavigator.peek()
-        return if (childScreen?.isBottomNavigationScreen() == true) {
-            childScreen
-        } else {
-            rootNavigator.peek()
-        }
+        return childNavigator.peek()
     }
 
     override fun resetRoot(
         newRoot: Screen,
         saveState: Boolean,
         restoreState: Boolean,
     ): ImmutableList<Screen> {
-        return if (newRoot.isBottomNavigationScreen()) {
+        return if (isMainTabScreen(newRoot)) {
             childNavigator.resetRoot(newRoot, saveState, restoreState)
         } else {
             rootNavigator.resetRoot(newRoot, saveState, restoreState)
         }
     }
 
     override fun peekBackStack(): ImmutableList<Screen> {
-        val childScreen = childNavigator.peek()
-        return if (childScreen?.isBottomNavigationScreen() == true) {
-            childNavigator.peekBackStack()
-        } else {
-            rootNavigator.peekBackStack()
-        }
+        return childNavigator.peekBackStack()
     }
 }