android: extract HottestPosts composable

android/src/main/kotlin/dev/msfjarvis/claw/android/ui/HottestPosts.kt

@@ -0,0 +1,48 @@
+package dev.msfjarvis.claw.android.ui
+
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.lazy.LazyListState
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
+import androidx.paging.LoadState
+import androidx.paging.compose.LazyPagingItems
+import com.google.accompanist.swiperefresh.SwipeRefresh
+import com.google.accompanist.swiperefresh.rememberSwipeRefreshState
+import dev.msfjarvis.claw.database.local.SavedPost
+import dev.msfjarvis.claw.model.LobstersPost
+import kotlinx.coroutines.launch
+
+@Composable
+fun HottestPosts(
+  items: LazyPagingItems<LobstersPost>,
+  listState: LazyListState,
+  isPostSaved: suspend (SavedPost) -> Boolean,
+  toggleSave: suspend (SavedPost) -> Unit,
+  reloadPosts: () -> Unit,
+  launchUrl: (String) -> Unit,
+  modifier: Modifier,
+) {
+  val coroutineScope = rememberCoroutineScope()
+  val isRefreshing = items.loadState.refresh == LoadState.Loading
+  SwipeRefresh(
+    state = rememberSwipeRefreshState(isRefreshing),
+    onRefresh = reloadPosts,
+  ) {
+    if (items.itemCount == 0) {
+      Box(modifier = Modifier.fillMaxSize())
+    } else {
+      NetworkPosts(
+        items = items,
+        launchUrl = launchUrl,
+        listState = listState,
+        isSaved = isPostSaved,
+        toggleSave = { coroutineScope.launch { toggleSave(it) } },
+        modifier = Modifier.padding(top = 16.dp).then(modifier),
+      )
+    }
+  }
+}

android/src/main/kotlin/dev/msfjarvis/claw/android/ui/LobstersApp.kt

@@ -2,9 +2,6 @@ package dev.msfjarvis.claw.android.ui
 
 import androidx.compose.animation.ExperimentalAnimationApi
 import androidx.compose.foundation.isSystemInDarkTheme
-import androidx.compose.foundation.layout.Box
-import androidx.compose.foundation.layout.fillMaxSize
-import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.lazy.rememberLazyListState
 import androidx.compose.material.MaterialTheme
 import androidx.compose.material.Scaffold
@@ -15,7 +12,6 @@ import androidx.compose.runtime.SideEffect
 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.Modifier
 import androidx.compose.ui.geometry.Offset
@@ -23,20 +19,15 @@ import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.input.nestedscroll.NestedScrollConnection
 import androidx.compose.ui.input.nestedscroll.NestedScrollSource
 import androidx.compose.ui.input.nestedscroll.nestedScroll
-import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
-import androidx.paging.LoadState
 import androidx.paging.compose.collectAsLazyPagingItems
 import com.google.accompanist.insets.ProvideWindowInsets
 import com.google.accompanist.insets.navigationBarsPadding
 import com.google.accompanist.insets.statusBarsPadding
-import com.google.accompanist.swiperefresh.SwipeRefresh
-import com.google.accompanist.swiperefresh.rememberSwipeRefreshState
 import com.google.accompanist.systemuicontroller.rememberSystemUiController
 import dev.msfjarvis.claw.android.viewmodel.ClawViewModel
 import dev.msfjarvis.claw.common.theme.LobstersTheme
 import dev.msfjarvis.claw.common.urllauncher.UrlLauncher
-import kotlinx.coroutines.launch
 
 private const val ScrollDelta = 50
 
@@ -49,7 +40,6 @@ fun LobstersApp(
   val systemUiController = rememberSystemUiController()
   val scaffoldState = rememberScaffoldState()
   val listState = rememberLazyListState()
-  val coroutineScope = rememberCoroutineScope()
   var isFabVisible by remember { mutableStateOf(true) }
   val nestedScrollConnection = remember {
     object : NestedScrollConnection {
@@ -77,6 +67,7 @@ fun LobstersApp(
         systemUiController.setNavigationBarColor(color = Color.Transparent)
       }
       val items = viewModel.pagerFlow.collectAsLazyPagingItems()
+
       Scaffold(
         scaffoldState = scaffoldState,
         topBar = { ClawAppBar(modifier = Modifier.statusBarsPadding()) },
@@ -88,25 +79,16 @@ fun LobstersApp(
           )
         },
       ) {
-        val isRefreshing = items.loadState.refresh == LoadState.Loading
+        HottestPosts(
-        SwipeRefresh(
+          items,
-          state = rememberSwipeRefreshState(isRefreshing),
+          listState,
-          onRefresh = viewModel::reloadPosts,
+          viewModel::isPostSaved,
-        ) {
+          viewModel::toggleSave,
-          if (items.itemCount == 0) {
+          viewModel::reloadPosts,
-            Box(modifier = Modifier.fillMaxSize())
+          urlLauncher::launch,
-          } else {
+          Modifier.nestedScroll(nestedScrollConnection),
-            NetworkPosts(
-              items = items,
-              launchUrl = urlLauncher::launch,
-              listState = listState,
-              isSaved = viewModel::isPostSaved,
-              toggleSave = { coroutineScope.launch { viewModel.toggleSave(it) } },
-              modifier = Modifier.padding(top = 16.dp).nestedScroll(nestedScrollConnection),
         )
       }
     }
   }
-    }
-  }
 }