feat: 清空历史记录

app/src/main/java/com/huanchengfly/tieba/post/ui/page/history/HistoryPage.kt

@@ -9,10 +9,13 @@ import androidx.compose.material.TabRow
 import androidx.compose.material.Text
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.outlined.Delete
+import androidx.compose.material.rememberScaffoldState
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
@@ -23,6 +26,7 @@ import com.huanchengfly.tieba.post.R
 import com.huanchengfly.tieba.post.ui.common.theme.compose.ExtendedTheme
 import com.huanchengfly.tieba.post.ui.page.ProvideNavigator
 import com.huanchengfly.tieba.post.ui.page.history.list.HistoryListPage
+import com.huanchengfly.tieba.post.ui.page.history.list.HistoryListUiEvent
 import com.huanchengfly.tieba.post.ui.widgets.compose.BackNavigationIcon
 import com.huanchengfly.tieba.post.ui.widgets.compose.MyScaffold
 import com.huanchengfly.tieba.post.ui.widgets.compose.PagerTabIndicator
@@ -31,6 +35,7 @@ import com.huanchengfly.tieba.post.utils.HistoryUtil
 import com.ramcosta.composedestinations.annotation.DeepLink
 import com.ramcosta.composedestinations.annotation.Destination
 import com.ramcosta.composedestinations.navigation.DestinationsNavigator
+import kotlinx.coroutines.flow.MutableSharedFlow
 import kotlinx.coroutines.launch
 
 @OptIn(ExperimentalPagerApi::class)
@@ -45,8 +50,14 @@ fun HistoryPage(
 ) {
     val pagerState = rememberPagerState()
     val coroutineScope = rememberCoroutineScope()
+    val scaffoldState = rememberScaffoldState()
+
+    val context = LocalContext.current
+
+    val eventFlow = remember { MutableSharedFlow<HistoryListUiEvent>() }
 
     MyScaffold(
+        scaffoldState = scaffoldState,
         topBar = {
             TitleCentredToolbar(
                 title = stringResource(id = R.string.title_history),
@@ -54,7 +65,19 @@ fun HistoryPage(
                     BackNavigationIcon(onBackPressed = { navigator.navigateUp() })
                 },
                 actions = {
-                    IconButton(onClick = { /*TODO*/ }) {
+                    IconButton(onClick = {
+                        coroutineScope.launch {
+                            HistoryUtil.deleteAll()
+                            eventFlow.emit(HistoryListUiEvent.DeleteAll)
+                            launch {
+                                scaffoldState.snackbarHostState.showSnackbar(
+                                    context.getString(
+                                        R.string.toast_clear_success
+                                    )
+                                )
+                            }
+                        }
+                    }) {
                         Icon(
                             imageVector = Icons.Outlined.Delete,
                             contentDescription = stringResource(id = R.string.title_history_delete),
@@ -115,18 +138,18 @@ fun HistoryPage(
         }
     ) {
         ProvideNavigator(navigator = navigator) {
-        HorizontalPager(
-            count = 2,
-            state = pagerState,
-            modifier = Modifier.fillMaxSize(),
-            verticalAlignment = Alignment.Top,
-            userScrollEnabled = true,
-        ) {
-            if (it == 0) {
-                HistoryListPage(type = HistoryUtil.TYPE_THREAD)
-            } else {
-                HistoryListPage(type = HistoryUtil.TYPE_FORUM)
-            }
+            HorizontalPager(
+                count = 2,
+                state = pagerState,
+                modifier = Modifier.fillMaxSize(),
+                verticalAlignment = Alignment.Top,
+                userScrollEnabled = true,
+            ) {
+                if (it == 0) {
+                    HistoryListPage(type = HistoryUtil.TYPE_THREAD, eventFlow = eventFlow)
+                } else {
+                    HistoryListPage(type = HistoryUtil.TYPE_FORUM, eventFlow = eventFlow)
+                }
             }
         }
     }

app/src/main/java/com/huanchengfly/tieba/post/ui/page/history/list/HistoryListPage.kt

@@ -43,17 +43,30 @@ import com.huanchengfly.tieba.post.ui.widgets.compose.UserHeader
 import com.huanchengfly.tieba.post.ui.widgets.compose.rememberMenuState
 import com.huanchengfly.tieba.post.utils.DateTimeUtils
 import com.huanchengfly.tieba.post.utils.HistoryUtil
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.filterIsInstance
+import kotlinx.coroutines.launch
 
 @OptIn(ExperimentalFoundationApi::class)
 @Composable
 fun HistoryListPage(
     type: Int,
+    eventFlow: Flow<HistoryListUiEvent>,
     viewModel: HistoryListViewModel = if (type == HistoryUtil.TYPE_THREAD) pageViewModel<ThreadHistoryListViewModel>() else pageViewModel<ForumHistoryListViewModel>()
 ) {
     LazyLoad(loaded = viewModel.initialized) {
         viewModel.send(HistoryListUiIntent.Refresh)
         viewModel.initialized = true
     }
+    LaunchedEffect(null) {
+        launch {
+            eventFlow
+                .filterIsInstance<HistoryListUiEvent.DeleteAll>()
+                .collect {
+                    viewModel.send(HistoryListUiIntent.DeleteAll)
+                }
+        }
+    }
     val isLoadingMore by viewModel.uiState.collectPartialAsState(
         prop1 = HistoryListUiState::isLoadingMore,
         initial = false

app/src/main/java/com/huanchengfly/tieba/post/ui/page/history/list/HistoryListViewModel.kt

@@ -18,6 +18,7 @@ import kotlinx.coroutines.flow.catch
 import kotlinx.coroutines.flow.filterIsInstance
 import kotlinx.coroutines.flow.flatMapConcat
 import kotlinx.coroutines.flow.flow
+import kotlinx.coroutines.flow.flowOf
 import kotlinx.coroutines.flow.flowOn
 import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.flow.merge
@@ -65,8 +66,12 @@ private class HistoryListPartialChangeProducer(val type: Int) :
                 .flatMapConcat { it.producePartialChange() },
             intentFlow.filterIsInstance<HistoryListUiIntent.Delete>()
                 .flatMapConcat { it.producePartialChange() },
+            intentFlow.filterIsInstance<HistoryListUiIntent.DeleteAll>()
+                .flatMapConcat { produceDeleteAllPartialChange() },
         )
 
+    private fun produceDeleteAllPartialChange() = flowOf(HistoryListPartialChange.DeleteAll)
+
     private fun produceRefreshPartialChange() =
         HistoryUtil.getFlow(type, 0)
             .map<List<History>, HistoryListPartialChange.Refresh> { histories ->
@@ -107,9 +112,22 @@ sealed interface HistoryListUiIntent : UiIntent {
     data class LoadMore(val page: Int) : HistoryListUiIntent
 
     data class Delete(val id: Int) : HistoryListUiIntent
+
+    object DeleteAll : HistoryListUiIntent
 }
 
 sealed interface HistoryListPartialChange : PartialChange<HistoryListUiState> {
+    object DeleteAll : HistoryListPartialChange {
+        override fun reduce(oldState: HistoryListUiState): HistoryListUiState = oldState.copy(
+            todayHistoryData = emptyList(),
+            beforeHistoryData = emptyList(),
+            currentPage = 0,
+            hasMore = false,
+            isLoadingMore = false,
+            isRefreshing = false
+        )
+    }
+
     sealed class Refresh : HistoryListPartialChange {
         override fun reduce(oldState: HistoryListUiState): HistoryListUiState = when (this) {
             is Failure -> oldState
@@ -194,4 +212,6 @@ sealed interface HistoryListUiEvent : UiEvent {
             val errorMsg: String
         ) : Delete
     }
+
+    object DeleteAll : HistoryListUiEvent
 }