[BOOK-298] refactor: BookRegisteredState enum class, BookSummaryModel 내 Computed Property 로 변경

Author: easyhooon

core/model/src/main/kotlin/com/ninecraft/booket/core/model/BookSearchModel.kt

@@ -27,4 +27,11 @@ data class BookSummaryModel(
     val link: String = "",
     val userBookStatus: String = "",
     val key: String = "",
-)
+) {
+    val isRegistered: Boolean
+        get() = userBookStatus != BEFORE_REGISTRATION
+
+    companion object {
+        const val BEFORE_REGISTRATION = "BEFORE_REGISTRATION"
+    }
+}

feature/search/src/main/kotlin/com/ninecraft/booket/feature/search/book/BookSearchUi.kt

@@ -222,7 +222,7 @@ internal fun BookSearchContent(
                                     onBookClick = { book ->
                                         state.eventSink(BookSearchUiEvent.OnBookClick(book.isbn13))
                                     },
-                                    enabled = BookRegisteredState.from(state.books[index].userBookStatus) == BookRegisteredState.BEFORE_REGISTRATION,
+                                    enabled = !state.books[index].isRegistered,
                                 )
                                 HorizontalDivider(
                                     modifier = Modifier.fillMaxWidth(),

feature/search/src/main/kotlin/com/ninecraft/booket/feature/search/book/BookSearchUiState.kt

@@ -64,14 +64,3 @@ sealed interface BookSearchUiEvent : CircuitUiEvent {
     data object OnBookRegisterSuccessOkButtonClick : BookSearchUiEvent
     data object OnBookRegisterSuccessCancelButtonClick : BookSearchUiEvent
 }
-
-enum class BookRegisteredState(val value: String) {
-    BEFORE_REGISTRATION("BEFORE_REGISTRATION"),
-    ;
-
-    companion object {
-        fun from(value: String?): BookRegisteredState? {
-            return entries.find { it.value == value }
-        }
-    }
-}