feat: Require login for guest keyword features

Guest users are now prompted to log in when attempting to use keyword-related features like notification toggling, adding keywords, or interacting with suggested keywords. This change leverages the existing LoginDialog component to guide users towards authentication for these functionalities.

Author: kongwoojin

feature/lostandfound/src/main/java/in/koreatech/koin/feature/lostandfound/navigation/Navigation.kt

@@ -146,9 +146,19 @@ fun NavGraphBuilder.koinLostAndFoundGraph(
     }
 
     composable<LostAndFoundNavType.LostAndFoundKeywordRoute> {
+        val navigator = rememberNavigator()
+        val context = LocalContext.current
         LostAndFoundKeyword(
             viewModel = hiltViewModel(),
-            onBackClick = { navController.popBackStack() }
+            onBackClick = { navController.popBackStack() },
+            navigateToLogin = {
+                navigator.navigateToSignIn(
+                    context = context,
+                    redirectUrl = DEEP_LINK_LOST_AND_FOUND_BASE
+                ).apply {
+                    context.startActivity(this)
+                }
+            }
         )
     }
 }

feature/lostandfound/src/main/java/in/koreatech/koin/feature/lostandfound/ui/keyword/LostAndFoundKeyword.kt

@@ -57,6 +57,7 @@ import `in`.koreatech.koin.core.designsystem.theme.KoinTheme
 import `in`.koreatech.koin.feature.lostandfound.R
 import `in`.koreatech.koin.feature.lostandfound.component.LostAndFoundAddableChipFlowGroup
 import `in`.koreatech.koin.feature.lostandfound.component.LostAndFoundDeletableChipFlowGroup
+import `in`.koreatech.koin.feature.lostandfound.ui.list.component.LoginDialog
 import kotlinx.collections.immutable.ImmutableList
 import kotlinx.collections.immutable.persistentListOf
 import kotlinx.collections.immutable.toPersistentList
@@ -69,6 +70,7 @@ private val ButtonShape = RoundedCornerShape(4.dp)
 @Composable
 fun LostAndFoundKeyword(
     onBackClick: () -> Unit,
+    navigateToLogin: () -> Unit,
     modifier: Modifier = Modifier,
     viewModel: LostAndFoundKeywordViewModel = hiltViewModel()
 ) {
@@ -92,6 +94,19 @@ fun LostAndFoundKeyword(
         onBackClick()
     }
 
+    // 비로그인 다이얼로그
+    if (uiState.showLoginDialog) {
+        LoginDialog(
+            title = stringResource(R.string.recommend_login_to_get_keyword_notification_title),
+            description = stringResource(R.string.recommend_login_to_get_keyword_notification_message),
+            onPositive = {
+                navigateToLogin()
+                viewModel.dismissLoginDialog()
+            },
+            onNegative = viewModel::dismissLoginDialog
+        )
+    }
+
     // Article keyword 화면처럼, 이미 등록된 키워드는 추천 키워드에서 제거
     val availableSuggestions by remember {
         derivedStateOf {

feature/lostandfound/src/main/java/in/koreatech/koin/feature/lostandfound/ui/keyword/LostAndFoundKeywordState.kt

@@ -10,5 +10,7 @@ data class LostAndFoundKeywordState(
     val keywordInput: String = "",
     val isNotificationEnabled: Boolean = false,
     val isLoading: Boolean = false,
-    val suggestedKeywords: ImmutableList<String> = persistentListOf()
+    val suggestedKeywords: ImmutableList<String> = persistentListOf(),
+    val isLoggedIn: Boolean = false,
+    val showLoginDialog: Boolean = false
 )

feature/lostandfound/src/main/java/in/koreatech/koin/feature/lostandfound/ui/keyword/LostAndFoundKeywordViewModel.kt

@@ -10,6 +10,7 @@ import `in`.koreatech.koin.domain.usecase.article.lostandfound.SaveLostItemKeywo
 import `in`.koreatech.koin.domain.usecase.notification.DeleteNotificationSubscriptionUseCase
 import `in`.koreatech.koin.domain.usecase.notification.GetNotificationPermissionInfoUseCase
 import `in`.koreatech.koin.domain.usecase.notification.UpdateNotificationSubscriptionUseCase
+import `in`.koreatech.koin.domain.usecase.user.GetUserStatusUseCase
 import `in`.koreatech.koin.feature.lostandfound.R
 import javax.inject.Inject
 import kotlinx.collections.immutable.persistentListOf
@@ -24,7 +25,7 @@ import org.orbitmvi.orbit.syntax.simple.repeatOnSubscription
 import org.orbitmvi.orbit.viewmodel.container
 import timber.log.Timber
 
-@Suppress("LongParameterList")
+@Suppress("LongParameterList", "TooManyFunctions")
 @HiltViewModel
 class LostAndFoundKeywordViewModel @Inject constructor(
     private val fetchLostItemKeywordUseCase: FetchLostItemKeywordUseCase,
@@ -33,19 +34,31 @@ class LostAndFoundKeywordViewModel @Inject constructor(
     private val fetchLostItemKeywordSuggestionsUseCase: FetchLostItemKeywordSuggestionsUseCase,
     private val updateNotificationSubscriptionUseCase: UpdateNotificationSubscriptionUseCase,
     private val deleteNotificationSubscriptionUseCase: DeleteNotificationSubscriptionUseCase,
-    private val getNotificationPermissionInfoUseCase: GetNotificationPermissionInfoUseCase
+    private val getNotificationPermissionInfoUseCase: GetNotificationPermissionInfoUseCase,
+    private val getUserStatusUseCase: GetUserStatusUseCase
 ) : ViewModel(), ContainerHost<LostAndFoundKeywordState, LostAndFoundKeywordSideEffect> {
 
     override val container = container<LostAndFoundKeywordState, LostAndFoundKeywordSideEffect>(
         LostAndFoundKeywordState()
     )
 
     init {
+        observeUserStatus()
         observeKeywords()
         fetchSuggestedKeywords()
         loadNotificationState()
     }
 
+    private fun observeUserStatus() = intent {
+        repeatOnSubscription {
+            getUserStatusUseCase()
+                .catch { reduce { state.copy(isLoggedIn = false) } }
+                .collect { user ->
+                    reduce { state.copy(isLoggedIn = !user.isAnonymous) }
+                }
+        }
+    }
+
     private fun observeKeywords() = intent {
         repeatOnSubscription {
             fetchLostItemKeywordUseCase()
@@ -86,6 +99,10 @@ class LostAndFoundKeywordViewModel @Inject constructor(
 
     fun addKeyword(keyword: String) {
         intent {
+            if (!state.isLoggedIn) {
+                reduce { state.copy(showLoginDialog = true) }
+                return@intent
+            }
             if (state.isLoading) return@intent
 
             val validationError = validateKeyword(keyword)
@@ -132,6 +149,10 @@ class LostAndFoundKeywordViewModel @Inject constructor(
 
     fun toggleNotification(isEnabled: Boolean) {
         intent {
+            if (!state.isLoggedIn) {
+                reduce { state.copy(showLoginDialog = true) }
+                return@intent
+            }
             if (state.isLoading) return@intent
 
             reduce { state.copy(isLoading = true, isNotificationEnabled = isEnabled) }
@@ -149,6 +170,10 @@ class LostAndFoundKeywordViewModel @Inject constructor(
         }
     }
 
+    fun dismissLoginDialog() = intent {
+        reduce { state.copy(showLoginDialog = false) }
+    }
+
     private fun validateKeyword(keyword: String): Int? = when {
         keyword.isEmpty() -> R.string.keyword_add_require_input
         WHITESPACE_REGEX.containsMatchIn(keyword) -> R.string.keyword_add_blank_not_allowed

feature/lostandfound/src/main/res/values/strings.xml

@@ -182,7 +182,7 @@
     <string name="downloading">다운로드 중</string>
     <string name="start_download">파일을 다운로드합니다.</string>
     <string name="recommend_login_to_get_keyword_notification_title">키워드 알림을 받으려면\n로그인이 필요해요.</string>
-    <string name="recommend_login_to_get_keyword_notification_message">로그인 후 간편하게 공지사항 키워드\n알림을 받아보세요!</string>
+    <string name="recommend_login_to_get_keyword_notification_message">로그인 후 간편하게 분실물 키워드\n알림을 받아보세요!</string>
     <string name="title_article">게시판</string>
     <string name="navigation_title_article">공지사항</string>
     <string name="navigation_title_article_search">공지글 검색</string>