[GMSS-357]보관함 상세에서 카드가 없는 달의 비우기 비활성화 및 빈 상태 문구 표시

feature/archive/src/main/java/com/gamss/android/feature/archive/ArchiveDetailScreen.kt

@@ -24,6 +24,7 @@ import androidx.compose.ui.draw.clip
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.semantics.Role
+import androidx.compose.ui.text.TextStyle
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.hilt.navigation.compose.hiltViewModel
@@ -146,6 +147,7 @@ private fun ArchiveDetailFrame(
         topBar = {
             ArchiveDetailTopBar(
                 emotion = emotion,
+                isClearEnabled = state.isClearable,
                 onBackClick = onBackClick,
                 onClearClick = onClearClick,
             )
@@ -253,6 +255,7 @@ private fun ClearConfirmDialog(
 @Composable
 private fun ArchiveDetailTopBar(
     emotion: EmotionCharacter,
+    isClearEnabled: Boolean,
     onBackClick: () -> Unit,
     onClearClick: () -> Unit,
 ) {
@@ -282,10 +285,10 @@ private fun ArchiveDetailTopBar(
             Text(
                 text = stringResource(R.string.archive_clear),
                 style = GamssTheme.typography.body4Medium,
-                color = GamssTheme.colors.gray900,
+                color = if (isClearEnabled) GamssTheme.colors.gray900 else GamssTheme.colors.gray300,
                 modifier = Modifier
                     .clip(RoundedCornerShape(ClearRippleRadius))
-                    .clickable(role = Role.Button, onClick = onClearClick)
+                    .clickable(enabled = isClearEnabled, role = Role.Button, onClick = onClearClick)
                     .padding(ClearHitPadding),
             )
         },
@@ -302,25 +305,33 @@ private fun ArchiveDetailCards(
     Box(modifier = Modifier.fillMaxSize(), contentAlignment = Alignment.Center) {
         when (cardsState) {
             ArchiveCards.Loading -> CircularProgressIndicator(color = GamssTheme.colors.gray700)
-            ArchiveCards.LoadFailed -> EmptyMessage(textRes = R.string.archive_cards_load_failed)
-            // 카드가 없으면 아무것도 그리지 않는다. 빈 종이판이 그대로 보이는 것이 이 화면의 빈 상태다.
+            ArchiveCards.LoadFailed -> EmptyMessage(
+                textRes = R.string.archive_cards_load_failed,
+                style = GamssTheme.typography.body4Medium,
+            )
             is ArchiveCards.Loaded -> if (cardsState.cards.isNotEmpty()) {
                 PaperPile(
                     cards = cardsState.cards,
                     droppedCardId = droppedCardId,
                     onDropConsumed = onDropConsumed,
                     onPaperClick = onPaperClick,
                 )
+            } else {
+                // 조회 실패 문구와 구분되도록 iOS 와 같은 스타일을 쓴다.
+                EmptyMessage(
+                    textRes = R.string.archive_cards_empty,
+                    style = GamssTheme.typography.body3Regular,
+                )
             }
         }
     }
 }
 
 @Composable
-private fun EmptyMessage(@StringRes textRes: Int) {
+private fun EmptyMessage(@StringRes textRes: Int, style: TextStyle) {
     Text(
         text = stringResource(textRes),
-        style = GamssTheme.typography.body4Medium,
+        style = style,
         color = GamssTheme.colors.gray500,
     )
 }

feature/archive/src/main/java/com/gamss/android/feature/archive/ArchiveDetailState.kt

@@ -15,7 +15,11 @@ data class ArchiveDetailState(
     val selectedCard: Card? = null,
     val conversationCard: ConversationCard? = null,
     val isConversationLoading: Boolean = false,
-)
+) {
+    /** 감정 칸 전체 카드 수는 알 수 없어, 보고 있는 달에 카드가 있을 때만 비울 수 있다. */
+    val isClearable: Boolean
+        get() = cards is ArchiveCards.Loaded && cards.cards.isNotEmpty()
+}
 
 /** 종이 더미 자리가 가질 수 있는 상태. 셋이 겹칠 수 없어 플래그 조합 대신 하나로 든다. */
 sealed interface ArchiveCards {

feature/archive/src/main/java/com/gamss/android/feature/archive/ArchiveDetailViewModel.kt

@@ -50,6 +50,7 @@ class ArchiveDetailViewModel @Inject constructor(
     }
 
     fun showClearDialog() = intent {
+        if (!state.isClearable) return@intent
         reduce { state.copy(isClearDialogVisible = true) }
     }
 

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

@@ -8,6 +8,7 @@
     <string name="archive_back_description">뒤로 가기</string>
     <string name="archive_paper_description">%1$d월 %2$d일 카드</string>
     <string name="archive_cards_load_failed">이야기를 불러오지 못했어요.</string>
+    <string name="archive_cards_empty">아직 남겨둔 이야기가 없어요.</string>
 
     <string name="archive_clear">비우기</string>
     <string name="archive_clear_dialog_title">%1$s 기록 비우기</string>

feature/archive/src/test/java/com/gamss/android/feature/archive/ArchiveDetailViewModelTest.kt

@@ -456,6 +456,67 @@ class ArchiveDetailViewModelTest {
         }
     }
 
+    @Test
+    fun `보고 있는 달에 카드가 없으면 비우기 다이얼로그를 띄우지 않는다`() = runTest {
+        val viewModel = viewModel(FakeCardRepository(AppResult.Success(emptyList())))
+        val testScope = this
+
+        viewModel.test(this) {
+            containerHost.load(EmotionCharacter.ANGER)
+            expectState { copy(emotion = EmotionCharacter.ANGER) }
+            expectState { copy(cards = ArchiveCards.Loaded(emptyList())) }
+
+            containerHost.showClearDialog()
+            testScope.runCurrent()
+            expectNoItems()
+        }
+    }
+
+    @Test
+    fun `카드 조회에 실패하면 비우기 다이얼로그를 띄우지 않는다`() = runTest {
+        val viewModel = viewModel(FakeCardRepository(AppResult.Failure(IllegalStateException("network"))))
+        val testScope = this
+
+        viewModel.test(this) {
+            containerHost.load(EmotionCharacter.ANGER)
+            expectState { copy(emotion = EmotionCharacter.ANGER) }
+            expectState { copy(cards = ArchiveCards.LoadFailed) }
+
+            containerHost.showClearDialog()
+            testScope.runCurrent()
+            expectNoItems()
+        }
+    }
+
+    @Test
+    fun `다른 달 카드를 받아 오는 중에는 비우기 다이얼로그를 띄우지 않는다`() = runTest {
+        val slowMonth = YearMonth.now(KoreanTimeZone).minusMonths(1)
+        val slowMonthGate = CompletableDeferred<Unit>()
+        val repository = FakeCardRepository(
+            monthResult = AppResult.Success(listOf(angerCard)),
+            monthGates = mapOf(slowMonth to slowMonthGate),
+        )
+        val viewModel = viewModel(repository)
+        val testScope = this
+
+        viewModel.test(this) {
+            containerHost.load(EmotionCharacter.ANGER)
+            expectState { copy(emotion = EmotionCharacter.ANGER) }
+            expectState { copy(cards = ArchiveCards.Loaded(listOf(angerCard))) }
+
+            // 직전 달에 카드가 있었어도 새 달 목록이 오기 전에는 비울 수 없다.
+            containerHost.selectMonth(slowMonth)
+            expectState { copy(yearMonth = slowMonth, cards = ArchiveCards.Loading) }
+
+            containerHost.showClearDialog()
+            testScope.runCurrent()
+            expectNoItems()
+
+            slowMonthGate.complete(Unit)
+            expectState { copy(cards = ArchiveCards.Loaded(listOf(angerCard))) }
+        }
+    }
+
     private fun viewModel(
         repository: FakeCardRepository,
         conversationRepository: FakeConversationRepository = FakeConversationRepository(),