Feat: Add News tab and related functionality

- Added a "News" tab to the main index screen.
- Implemented API parameters for fetching news-specific posts: `imageTag`, `search`, `advancedSearch`, `newsFilter`, `onlyNews`, `newsSource`, `newsLanguage`, `newsCategory`, `requireImageCache`.
- Updated `Moment` data class and `MomentEntity` to include news-related fields like `isNews`, `newsTitle`, `newsUrl`, etc.
- Created `News.kt` composable and `NewsViewModel.kt` to display and manage news items.
- Updated `MomentLoader` to include a `newsOnly` parameter for fetching only news items.
- Added Japanese translations for new index tab strings: "Worldwide", "Dynamic", "Following", "Hot", and "News".
- Adjusted tab count and layout based on guest/logged-in user status to accommodate the new "News" tab.

app/src/main/java/com/aiosman/ravenow/data/MomentService.kt

@@ -32,6 +32,28 @@ data class Moment(
     val time: String,
     @SerializedName("isFollowed")
     val isFollowed: Boolean,
+    @SerializedName("isNews")
+    val isNews: Boolean? = null,
+    @SerializedName("newsTitle")
+    val newsTitle: String? = null,
+    @SerializedName("newsUrl")
+    val newsUrl: String? = null,
+    @SerializedName("newsSource")
+    val newsSource: String? = null,
+    @SerializedName("newsCategory")
+    val newsCategory: String? = null,
+    @SerializedName("newsLanguage")
+    val newsLanguage: String? = null,
+    @SerializedName("newsContent")
+    val newsContent: String? = null,
+    @SerializedName("hasFullText")
+    val hasFullText: Boolean? = null,
+    @SerializedName("summary")
+    val summary: String? = null,
+    @SerializedName("publishedAt")
+    val publishedAt: String? = null,
+    @SerializedName("imageCached")
+    val imageCached: Boolean? = null,
 ) {
     fun toMomentItem(): MomentEntity {
         return MomentEntity(
@@ -60,6 +82,17 @@ data class Moment(
             authorId = user.id.toInt(),
             liked = isLiked,
             isFavorite = isFavorite,
+            isNews = isNews,
+            newsTitle = newsTitle,
+            newsUrl = newsUrl,
+            newsSource = newsSource,
+            newsCategory = newsCategory,
+            newsLanguage = newsLanguage,
+            newsContent = newsContent,
+            hasFullText = hasFullText,
+            summary = summary,
+            publishedAt = publishedAt,
+            imageCached = imageCached,
         )
     }
 }

app/src/main/java/com/aiosman/ravenow/data/api/RiderProAPI.kt

@@ -316,6 +316,7 @@ interface RaveNowAPI {
     suspend fun getPosts(
         @Query("page") page: Int = 1,
         @Query("pageSize") pageSize: Int = 20,
+        @Query("id") postId: Int? = null,
         @Query("timelineId") timelineId: Int? = null,
         @Query("authorId") authorId: Int? = null,
         @Query("contentSearch") contentSearch: String? = null,
@@ -323,6 +324,15 @@ interface RaveNowAPI {
         @Query("trend") trend: String? = null,
         @Query("favouriteUserId") favouriteUserId: Int? = null,
         @Query("explore") explore: String? = null,
+        @Query("imageTag") imageTag: String? = null,
+        @Query("search") search: String? = null,
+        @Query("advancedSearch") advancedSearch: String? = null,
+        @Query("newsFilter") newsFilter: String? = null,
+        @Query("onlyNews") onlyNews: Boolean? = null,
+        @Query("newsSource") newsSource: String? = null,
+        @Query("newsLanguage") newsLanguage: String? = null,
+        @Query("newsCategory") newsCategory: String? = null,
+        @Query("requireImageCache") requireImageCache: Boolean? = null,
     ): Response<ListContainer<Moment>>
 
     @Multipart

app/src/main/java/com/aiosman/ravenow/entity/Moment.kt

@@ -299,12 +299,35 @@ data class MomentEntity(
     // 关联动态
     var relMoment: MomentEntity? = null,
     // 是否收藏
-    var isFavorite: Boolean = false
+    var isFavorite: Boolean = false,
+    // 是否为新闻
+    val isNews: Boolean? = null,
+    // 新闻标题
+    val newsTitle: String? = null,
+    // 新闻链接
+    val newsUrl: String? = null,
+    // 新闻来源
+    val newsSource: String? = null,
+    // 新闻分类
+    val newsCategory: String? = null,
+    // 新闻语言
+    val newsLanguage: String? = null,
+    // 新闻内容
+    val newsContent: String? = null,
+    // 是否有完整文本
+    val hasFullText: Boolean? = null,
+    // 摘要
+    val summary: String? = null,
+    // 发布时间
+    val publishedAt: String? = null,
+    // 图片是否已缓存
+    val imageCached: Boolean? = null
 )
 class MomentLoaderExtraArgs(
     val explore: Boolean? = false,
     val timelineId: Int? = null,
-    val authorId : Int? = null
+    val authorId : Int? = null,
+    val newsOnly: Boolean? = false
 )
 class MomentLoader : DataLoader<MomentEntity,MomentLoaderExtraArgs>() {
     override suspend fun fetchData(
@@ -317,7 +340,8 @@ class MomentLoader : DataLoader<MomentEntity,MomentLoaderExtraArgs>() {
             pageSize = pageSize,
             explore = if (extra.explore == true) "true" else "",
             timelineId = extra.timelineId,
-            authorId = extra.authorId
+            authorId = extra.authorId,
+            newsFilter = if (extra.newsOnly == true) "news_only" else ""
         )
         val data =  result.body()?.let {
             ListContainer(

app/src/main/java/com/aiosman/ravenow/ui/index/tabs/moment/Moment.kt

@@ -44,6 +44,7 @@ import com.aiosman.ravenow.ui.NavigationRoute
 import com.aiosman.ravenow.ui.index.tabs.moment.tabs.dynamic.Dynamic
 import com.aiosman.ravenow.ui.index.tabs.moment.tabs.expolre.Explore
 import com.aiosman.ravenow.ui.index.tabs.moment.tabs.hot.HotMomentsList
+import com.aiosman.ravenow.ui.index.tabs.moment.tabs.news.News
 import com.aiosman.ravenow.ui.index.tabs.moment.tabs.timeline.TimelineMomentsList
 import com.aiosman.ravenow.ui.index.tabs.search.SearchViewModel
 import com.aiosman.ravenow.ui.modifiers.noRippleClickable
@@ -66,8 +67,8 @@ fun MomentsList() {
     val navigationBarPaddings =
         WindowInsets.navigationBars.asPaddingValues().calculateBottomPadding() + 48.dp
     val statusBarPaddingValues = WindowInsets.systemBars.asPaddingValues()
-    // 游客模式下不显示timeline，只显示2个tab：Dynamic、Hot    // 游客模式下不显示timeline，只显示3个tab：Explore、Dynamic、Hot
+    // 游客模式下显示3个tab：Worldwide、Hot、News，非游客模式显示4个tab：Worldwide、Following、Hot、News
-    val tabCount = if (AppStore.isGuest) 2 else 3        // val tabCount = if (AppStore.isGuest) 3 else 4
+    val tabCount = if (AppStore.isGuest) 3 else 4
     var pagerState = rememberPagerState { tabCount }
     var scope = rememberCoroutineScope()
     Column(
@@ -204,6 +205,23 @@ fun MomentsList() {
                         }
                     )
                 }
+                
+                TabSpacer()
+                
+                // 新闻标签
+                Box {
+                    CustomTabItem(
+                        text = stringResource(R.string.index_news),
+                        isSelected = pagerState.currentPage == 3,
+                        onClick = {
+                            tabDebouncer {
+                                scope.launch {
+                                    pagerState.animateScrollToPage(3)
+                                }
+                            }
+                        }
+                    )
+                }
             } else {
                 // 热门标签 (游客模式)
                 Box {
@@ -219,6 +237,23 @@ fun MomentsList() {
                         }
                     )
                 }
+                
+                TabSpacer()
+                
+                // 新闻标签 (游客模式)
+                Box {
+                    CustomTabItem(
+                        text = stringResource(R.string.index_news),
+                        isSelected = pagerState.currentPage == 2,
+                        onClick = {
+                            tabDebouncer {
+                                scope.launch {
+                                    pagerState.animateScrollToPage(2)
+                                }
+                            }
+                        }
+                    )
+                }
             }
         }
 
@@ -229,7 +264,7 @@ fun MomentsList() {
                 .weight(1f)
         ) {
             if (AppStore.isGuest) {
-                // 游客模式：Dynamic(0), Hot(1)
+                // 游客模式：Worldwide(0), Hot(1), News(2)
                 when (it) {
                     0 -> {
                         Dynamic()
@@ -237,9 +272,12 @@ fun MomentsList() {
                     1 -> {
                         HotMomentsList()
                     }
+                    2 -> {
+                        News()
+                    }
                 }
             } else {
-                // 正常用户：Dynamic(0), Timeline(1), Hot(2)
+                // 正常用户：Worldwide(0), Following(1), Hot(2), News(3)
                 when (it) {
                     0 -> {
                         Dynamic()
@@ -250,6 +288,9 @@ fun MomentsList() {
                     2 -> {
                         HotMomentsList()
                     }
+                    3 -> {
+                        News()
+                    }
                 }
             }
         }

app/src/main/java/com/aiosman/ravenow/ui/index/tabs/moment/tabs/news/News.kt

@@ -0,0 +1,179 @@
+package com.aiosman.ravenow.ui.index.tabs.moment.tabs.news
+
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.rememberLazyListState
+import androidx.compose.material.ExperimentalMaterialApi
+import androidx.compose.material.pullrefresh.PullRefreshIndicator
+import androidx.compose.material.pullrefresh.pullRefresh
+import androidx.compose.material.pullrefresh.rememberPullRefreshState
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.derivedStateOf
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import com.aiosman.ravenow.GuestLoginCheckOut
+import com.aiosman.ravenow.GuestLoginCheckOutScene
+import com.aiosman.ravenow.LocalNavController
+import com.aiosman.ravenow.ui.NavigationRoute
+import com.aiosman.ravenow.ui.composables.MomentCard
+import com.aiosman.ravenow.ui.composables.rememberDebouncer
+import kotlinx.coroutines.launch
+
+/**
+ * 新闻动态列表
+ */
+@OptIn(ExperimentalMaterialApi::class)
+@Composable
+fun News() {
+    val model = NewsViewModel
+    val moments = model.moments
+    val navController = LocalNavController.current
+
+    val scope = rememberCoroutineScope()
+    val state = rememberPullRefreshState(model.refreshing, onRefresh = {
+        model.refreshPager(
+            pullRefresh = true
+        )
+    })
+    val listState = rememberLazyListState()
+
+    // 用于跟踪是否已经触发过加载更多
+    var hasTriggeredLoadMore by remember { mutableStateOf(false) }
+
+    // observe list scrolling with simplified logic
+    val reachedBottom by remember {
+        derivedStateOf {
+            val layoutInfo = listState.layoutInfo
+            val lastVisibleItem = layoutInfo.visibleItemsInfo.lastOrNull()
+            val totalItems = layoutInfo.totalItemsCount
+
+            if (lastVisibleItem == null || totalItems == 0) {
+                false
+            } else {
+                val isLastItemVisible = lastVisibleItem.index >= totalItems - 2
+
+                // 简化逻辑：只要滑动到底部且还没有触发过，就触发加载
+                isLastItemVisible && !hasTriggeredLoadMore
+            }
+        }
+    }
+
+    // load more if scrolled to bottom
+    LaunchedEffect(reachedBottom) {
+        if (reachedBottom) {
+            hasTriggeredLoadMore = true
+            model.loadMore()
+        }
+    }
+    LaunchedEffect(Unit) {
+        model.refreshPager()
+    }
+
+    // 监听数据变化，重置加载状态
+    LaunchedEffect(moments.size) {
+        if (moments.size > 0) {
+            // 延迟重置，确保数据已经稳定
+            kotlinx.coroutines.delay(500)
+            hasTriggeredLoadMore = false
+        }
+    }
+    Column(
+        modifier = Modifier
+            .fillMaxSize()
+
+    ) {
+        Box(Modifier.pullRefresh(state)) {
+            LazyColumn(
+                modifier = Modifier.fillMaxSize(),
+                state = listState
+            ) {
+                items(
+                    moments.size,
+                    key = { idx -> idx }
+                ) { idx ->
+                    //处理下标越界
+                    if (idx < 0 || idx >= moments.size) return@items
+                    val momentItem = moments[idx] ?: return@items
+
+                    val commentDebouncer = rememberDebouncer()
+                    val likeDebouncer = rememberDebouncer()
+                    val favoriteDebouncer = rememberDebouncer()
+                    val followDebouncer = rememberDebouncer()
+
+                    MomentCard(
+                        momentEntity = momentItem,
+                        onAddComment = {
+                            commentDebouncer {
+                                // 检查游客模式，如果是游客则跳转登录
+                                if (GuestLoginCheckOut.needLogin(GuestLoginCheckOutScene.COMMENT_MOMENT)) {
+                                    navController.navigate(NavigationRoute.Login.route)
+                                } else {
+                                    scope.launch {
+                                        model.onAddComment(momentItem.id)
+                                    }
+                                }
+                            }
+                        },
+                        onLikeClick = {
+                            likeDebouncer {
+                                // 检查游客模式，如果是游客则跳转登录
+                                if (GuestLoginCheckOut.needLogin(GuestLoginCheckOutScene.LIKE_MOMENT)) {
+                                    navController.navigate(NavigationRoute.Login.route)
+                                } else {
+                                    scope.launch {
+                                        if (momentItem.liked) {
+                                            model.dislikeMoment(momentItem.id)
+                                        } else {
+                                            model.likeMoment(momentItem.id)
+                                        }
+                                    }
+                                }
+                            }
+                        },
+                        onFavoriteClick = {
+                            favoriteDebouncer {
+                                // 检查游客模式，如果是游客则跳转登录
+                                if (GuestLoginCheckOut.needLogin(GuestLoginCheckOutScene.LIKE_MOMENT)) {
+                                    navController.navigate(NavigationRoute.Login.route)
+                                } else {
+                                    scope.launch {
+                                        if (momentItem.isFavorite) {
+                                            model.unfavoriteMoment(momentItem.id)
+                                        } else {
+                                            model.favoriteMoment(momentItem.id)
+                                        }
+                                    }
+                                }
+                            }
+                        },
+                        onFollowClick = {
+                            followDebouncer {
+                                // 检查游客模式，如果是游客则跳转登录
+                                if (GuestLoginCheckOut.needLogin(GuestLoginCheckOutScene.FOLLOW_USER)) {
+                                    navController.navigate(NavigationRoute.Login.route)
+                                } else {
+                                    model.followAction(momentItem)
+                                }
+                            }
+                        },
+                        showFollowButton = true
+                    )
+                }
+            }
+            
+            PullRefreshIndicator(
+                refreshing = model.refreshing,
+                state = state,
+                modifier = Modifier.align(Alignment.TopCenter)
+            )
+        }
+    }
+}

app/src/main/java/com/aiosman/ravenow/ui/index/tabs/moment/tabs/news/NewsViewModel.kt

@@ -0,0 +1,16 @@
+package com.aiosman.ravenow.ui.index.tabs.moment.tabs.news
+
+import com.aiosman.ravenow.entity.MomentLoaderExtraArgs
+import com.aiosman.ravenow.ui.index.tabs.moment.BaseMomentModel
+import org.greenrobot.eventbus.EventBus
+
+
+object NewsViewModel : BaseMomentModel() {
+    init {
+        EventBus.getDefault().register(this)
+    }
+    
+    override fun extraArgs(): MomentLoaderExtraArgs {
+        return MomentLoaderExtraArgs(explore = true, newsOnly = true)
+    }
+}

app/src/main/res/values-ja/strings.xml

@@ -26,4 +26,11 @@
     <string name="create_agent_v2_ai_enhance_icon_desc">AI美化アイコン</string>
     <string name="create_agent_v2_edit_icon_desc">編集アイコン</string>
     <string name="create_agent_v2_select_avatar_desc">アバター選択</string>
+    
+    <!-- Index tabs -->
+    <string name="index_worldwide">ワールドワイド</string>
+    <string name="index_dynamic">ダイナミック</string>
+    <string name="index_following">フォロー中</string>
+    <string name="index_hot">ホット</string>
+    <string name="index_news">ニュース</string>
 </resources>

app/src/main/res/values/strings.xml

@@ -122,6 +122,7 @@
     <string name="index_dynamic">Dynamic</string>
     <string name="index_following">Following</string>
     <string name="index_hot">Hot</string>
+    <string name="index_news">News</string>
     <string name="main_home">Home</string>
     <string name="main_ai">Agent</string>
     <string name="main_message">Message</string>