desktop: wire in API into desktop client

desktop/src/jvmMain/kotlin/Api.kt

@@ -0,0 +1,34 @@
+import com.jakewharton.retrofit2.converter.kotlinx.serialization.asConverterFactory
+import dev.msfjarvis.claw.api.LobstersApi
+import kotlinx.serialization.ExperimentalSerializationApi
+import kotlinx.serialization.json.Json
+import okhttp3.MediaType
+import okhttp3.OkHttpClient
+import retrofit2.Retrofit
+import retrofit2.create
+
+@OptIn(ExperimentalSerializationApi::class)
+class Api {
+  private fun getOkHttpClient(): OkHttpClient {
+    return OkHttpClient.Builder()
+      .addNetworkInterceptor { chain ->
+        val request = chain.request()
+        println("LobstersApi: ${request.method()}: ${request.url()}")
+        chain.proceed(request)
+      }
+      .build()
+  }
+
+  private fun getRetrofit(
+    okHttpClient: OkHttpClient,
+  ): Retrofit {
+    val contentType = MediaType.get("application/json")
+    return Retrofit.Builder()
+      .client(okHttpClient)
+      .baseUrl(LobstersApi.BASE_URL)
+      .addConverterFactory(Json.asConverterFactory(contentType))
+      .build()
+  }
+
+  val api: LobstersApi = getRetrofit(getOkHttpClient()).create()
+}

desktop/src/jvmMain/kotlin/Paging.kt

@@ -0,0 +1,31 @@
+import androidx.paging.PagingConfig
+import androidx.paging.cachedIn
+import com.kuuurt.paging.multiplatform.Pager
+import com.kuuurt.paging.multiplatform.PagingResult
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.FlowPreview
+
+@OptIn(FlowPreview::class, ExperimentalCoroutinesApi::class)
+class Paging(
+  private val coroutineScope: CoroutineScope,
+) {
+  private val api = Api()
+  private val pager =
+    Pager(
+      clientScope = coroutineScope,
+      config = PagingConfig(20),
+      initialKey = 1,
+      getItems = { currentKey, _ ->
+        val items = api.api.getHottestPosts(currentKey)
+        PagingResult(
+          items = items,
+          currentKey = currentKey,
+          prevKey = { if (currentKey == 1) null else currentKey - 1 },
+          nextKey = { currentKey + 1 },
+        )
+      }
+    )
+  val pagingData
+    get() = pager.pagingData.cachedIn(coroutineScope)
+}

desktop/src/jvmMain/kotlin/main.kt

@@ -3,9 +3,9 @@ import androidx.compose.foundation.layout.fillMaxHeight
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.lazy.LazyColumn
-import androidx.compose.foundation.lazy.itemsIndexed
 import androidx.compose.foundation.lazy.rememberLazyListState
 import androidx.compose.foundation.rememberScrollbarAdapter
+import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.dp
@@ -14,21 +14,36 @@ import androidx.compose.ui.window.WindowPosition
 import androidx.compose.ui.window.application
 import androidx.compose.ui.window.rememberWindowState
 import dev.msfjarvis.claw.common.posts.LobstersCard
-import dev.msfjarvis.claw.common.posts.TEST_POST
 import dev.msfjarvis.claw.common.theme.LobstersTheme
 import dev.msfjarvis.claw.common.urllauncher.UrlLauncher
+import dev.msfjarvis.claw.database.local.SavedPost
+import dev.msfjarvis.claw.model.LobstersPost
 import org.pushingpixels.aurora.component.AuroraVerticalScrollbar
 import org.pushingpixels.aurora.skin.ceruleanSkin
 import org.pushingpixels.aurora.window.AuroraWindow
 
+fun LobstersPost.toDbModel(): SavedPost {
+  return SavedPost(
+    shortId = shortId,
+    title = title,
+    url = url,
+    createdAt = createdAt,
+    commentsUrl = commentsUrl,
+    submitterName = submitter.username,
+    submitterAvatarUrl = submitter.avatarUrl,
+    tags = tags,
+  )
+}
+
 fun main() = application {
+  val paging = Paging(rememberCoroutineScope())
+  val items = paging.pagingData.collectAsLazyPagingItems()
   val urlLauncher = UrlLauncher()
   val state =
     rememberWindowState(
       placement = WindowPlacement.Floating,
       position = WindowPosition.Aligned(Alignment.Center),
     )
-  val itemsList = (0 until 10).toList()
   AuroraWindow(
     skin = ceruleanSkin(),
     title = "Claw",
@@ -41,18 +56,24 @@ fun main() = application {
         modifier = Modifier.fillMaxSize(),
       ) {
         val listState = rememberLazyListState()
-        LazyColumn(
-          state = listState,
-        ) {
-          itemsIndexed(itemsList) { _, _ ->
-            LobstersCard(
-              post = TEST_POST,
-              isSaved = false,
-              viewPost = { urlLauncher.launch(TEST_POST.url.ifEmpty { TEST_POST.commentsUrl }) },
-              viewComments = { urlLauncher.launch(TEST_POST.commentsUrl) },
-              toggleSave = {},
-              modifier = Modifier.padding(bottom = 16.dp, start = 16.dp, end = 16.dp),
-            )
+        if (items.itemCount == 0) {
+          Box(modifier = Modifier.fillMaxSize())
+        } else {
+          LazyColumn(
+            state = listState,
+          ) {
+            items(items) { item ->
+              if (item != null) {
+                LobstersCard(
+                  post = item.toDbModel(),
+                  isSaved = false,
+                  viewPost = { urlLauncher.launch(item.url.ifEmpty { item.commentsUrl }) },
+                  viewComments = { urlLauncher.launch(item.commentsUrl) },
+                  toggleSave = {},
+                  modifier = Modifier.padding(bottom = 16.dp, start = 16.dp, end = 16.dp),
+                )
+              }
+            }
           }
         }
         AuroraVerticalScrollbar(