app: implement first draft of lobste.rs UI

Signed-off-by: Harsh Shandilya <me@msfjarvis.dev>

app/build.gradle

@@ -38,6 +38,7 @@ dependencies {
     kapt "com.google.dagger:hilt-android-compiler:$hilt_version"
     implementation(project(":data"))
     implementation(project(":lobsters-api"))
+    implementation(project(":model"))
     implementation 'androidx.core:core-ktx:1.5.0-alpha03'
     implementation 'androidx.appcompat:appcompat:1.3.0-alpha02'
     implementation "androidx.compose.foundation:foundation:$compose_version"

app/src/main/AndroidManifest.xml

@@ -2,6 +2,8 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="dev.msfjarvis.lobsters">
 
+    <uses-permission android:name="android.permission.INTERNET" />
+
     <application
         android:name=".Application"
         android:allowBackup="true"

app/src/main/java/dev/msfjarvis/lobsters/MainActivity.kt

@@ -5,6 +5,7 @@ import androidx.appcompat.app.AppCompatActivity
 import androidx.compose.foundation.Text
 import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.lazy.LazyColumnFor
 import androidx.compose.material.AlertDialog
 import androidx.compose.material.Button
 import androidx.compose.material.FloatingActionButton
@@ -16,8 +17,8 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.MutableState
 import androidx.compose.runtime.Providers
 import androidx.compose.runtime.ambientOf
-import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateListOf
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberCoroutineScope
@@ -28,15 +29,20 @@ import androidx.compose.ui.platform.testTag
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.input.TextFieldValue
 import androidx.compose.ui.unit.dp
-import androidx.ui.tooling.preview.Preview
 import dagger.hilt.android.AndroidEntryPoint
+import dev.msfjarvis.lobsters.api.LobstersApi
 import dev.msfjarvis.lobsters.compose.utils.IconResource
 import dev.msfjarvis.lobsters.data.model.TodoItem
 import dev.msfjarvis.lobsters.data.source.TodoDatabase
+import dev.msfjarvis.lobsters.model.LobstersPost
 import dev.msfjarvis.lobsters.ui.ListContent
+import dev.msfjarvis.lobsters.ui.LobstersItem
 import dev.msfjarvis.lobsters.ui.LobstersTheme
 import dev.msfjarvis.lobsters.urllauncher.UrlLauncher
 import kotlinx.coroutines.launch
+import retrofit2.Call
+import retrofit2.Callback
+import retrofit2.Response
 import javax.inject.Inject
 
 val UrlLauncherAmbient = ambientOf<UrlLauncher> { error("Needs to be provided") }
@@ -45,6 +51,7 @@ val UrlLauncherAmbient = ambientOf<UrlLauncher> { error("Needs to be provided")
 class MainActivity : AppCompatActivity() {
   @Inject lateinit var database: TodoDatabase
   @Inject lateinit var urlLauncher: UrlLauncher
+  @Inject lateinit var apiClient: LobstersApi
 
   override fun onCreate(savedInstanceState: Bundle?) {
     super.onCreate(savedInstanceState)
@@ -52,6 +59,25 @@ class MainActivity : AppCompatActivity() {
       Providers(UrlLauncherAmbient provides urlLauncher) {
         LobstersTheme {
           val coroutineScope = rememberCoroutineScope()
+          val posts = mutableStateListOf<LobstersPost>()
+          coroutineScope.launch {
+            apiClient.getHottestPosts().enqueue(object : Callback<List<LobstersPost>> {
+              override fun onResponse(
+                call: Call<List<LobstersPost>>,
+                response: Response<List<LobstersPost>>
+              ) {
+                if (response.isSuccessful) {
+                  response.body()?.let { posts.addAll(it) }
+                }
+              }
+
+              override fun onFailure(call: Call<List<LobstersPost>>, t: Throwable) {
+                TODO("Not yet implemented")
+              }
+            })
+          }
+          LobstersApp(posts)
+          /*
           val itemsDao = database.todoItemsDao()
           val items by itemsDao.getAllItems().collectAsState(initial = emptyList())
           TodoApp(
@@ -59,12 +85,31 @@ class MainActivity : AppCompatActivity() {
             { item -> coroutineScope.launch { itemsDao.insert(item) } },
             { item -> coroutineScope.launch { itemsDao.delete(item) } },
           )
+          */
         }
       }
     }
   }
 }
 
+@Composable
+fun LobstersApp(
+  items: List<LobstersPost>,
+) {
+  val urlLauncher = UrlLauncherAmbient.current
+
+  Scaffold(
+    topBar = { TopAppBar({ Text(text = stringResource(R.string.app_name)) }) },
+    bodyContent = {
+      LazyColumnFor(items) { item ->
+        LobstersItem(item) { post ->
+          urlLauncher.launch(post.url)
+        }
+      }
+    }
+  )
+}
+
 @Composable
 fun TodoApp(
   items: List<TodoItem>,
@@ -145,6 +190,7 @@ fun ItemAddDialog(
   )
 }
 
+/*
 @Preview
 @Composable
 fun PreviewApp() {
@@ -157,3 +203,4 @@ fun PreviewApp() {
     )
   }
 }
+*/

app/src/main/java/dev/msfjarvis/lobsters/ui/LobstersItem.kt

@@ -0,0 +1,90 @@
+package dev.msfjarvis.lobsters.ui
+
+import androidx.compose.foundation.Text
+import androidx.compose.foundation.background
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.lazy.LazyColumnFor
+import androidx.compose.foundation.lazy.LazyItemScope
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material.ListItem
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import dev.msfjarvis.lobsters.model.LobstersPost
+import dev.msfjarvis.lobsters.model.Submitter
+
+@Composable
+fun LazyItemScope.LobstersItem(
+  post: LobstersPost,
+  modifier: Modifier = Modifier,
+  onClick: (LobstersPost) -> Unit,
+) {
+  ListItem(
+    modifier = modifier.padding(horizontal = 8.dp)
+      .fillParentMaxWidth()
+      .clickable(onClick = { onClick.invoke(post) }),
+    text = {
+      Column {
+        Text(
+          text = post.title,
+          color = Color(0xFF7395D9),
+          fontWeight = FontWeight.Bold,
+          modifier = Modifier.padding(top = 8.dp)
+        )
+        Row {
+          post.tags.forEach { tag ->
+            Text(
+              text = tag,
+              modifier = Modifier
+                .background(Color(0xFFE2E0C5), RoundedCornerShape(4.dp)),
+              color = Color.DarkGray,
+            )
+          }
+        }
+        Text(
+          text = "authored by ${post.submitterUser.username}",
+        )
+      }
+    }
+  )
+}
+
+@Composable
+fun PreviewLobstersItem() {
+  val post = LobstersPost(
+    "zqyydb",
+    "https://lobste.rs/s/zqyydb",
+    "2020-09-21T07:11:14.000-05:00",
+    "k2k20 hackathon report: Bob Beck on LibreSSL progress",
+    "https://undeadly.org/cgi?action=article;sid=20200921105847",
+    4,
+    0,
+    0,
+    "",
+    "https://lobste.rs/s/zqyydb/k2k20_hackathon_report_bob_beck_on",
+    Submitter(
+      "Vigdis",
+      "2017-02-27T21:08:14.000-06:00",
+      false,
+      "Alleycat for the fun, sys/net admin for a living and OpenBSD contributions for the pleasure. (Not so) French dude in Montreal\r\n\r\nhttps://chown.me",
+      false,
+      76,
+      "/avatars/Vigdis-100.png",
+      "sevan",
+      null,
+      null,
+      null,
+    ),
+    listOf("openbsd")
+  )
+  LobstersTheme {
+    LazyColumnFor(items = listOf(post)) { item ->
+      LobstersItem(post = item, onClick = {})
+    }
+  }
+}

app/src/main/java/dev/msfjarvis/lobsters/ui/Theme.kt

@@ -1,38 +1,25 @@
 package dev.msfjarvis.lobsters.ui
 
-import androidx.compose.foundation.isSystemInDarkTheme
 import androidx.compose.material.MaterialTheme
-import androidx.compose.material.darkColors
 import androidx.compose.material.lightColors
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.graphics.Color
 
 val lightColors = lightColors(
   primary = Color.White,
-  secondary = Color(0xFFAC130D),
-  background = Color(0xFFFEFEFE),
+  secondary = Color(0xFF6C0000),
+  background = Color.White,
   surface = Color.White,
-  onPrimary = Color(0x7395D9),
+  onPrimary = Color.DarkGray,
   onSecondary = Color.White,
   onBackground = Color.Black,
   onSurface = Color.Black,
 )
 
-val darkColors = darkColors(
-  primary = Color(0xFF121212),
-  secondary = Color(0xFFAC130D),
-  background = Color.Black,
-  surface = Color(0xFF121212),
-  onPrimary = Color(0x7395D9),
-  onSecondary = Color.White,
-  onBackground = Color.White,
-  onSurface = Color.White,
-)
-
 @Composable
 fun LobstersTheme(children: @Composable () -> Unit) {
   MaterialTheme(
-    colors = if (isSystemInDarkTheme()) darkColors else lightColors,
+    colors = lightColors,
     content = children,
   )
 }

lobsters-api/build.gradle

@@ -7,8 +7,8 @@ dependencies {
     def moshi_version = "1.9.3"
     def retrofit_version = "2.9.0"
     implementation project(":model")
+    api "com.squareup.retrofit2:retrofit:$retrofit_version"
     implementation "com.squareup.retrofit2:converter-moshi:$retrofit_version"
-    implementation "com.squareup.retrofit2:retrofit:$retrofit_version"
     kaptTest "com.squareup.moshi:moshi-kotlin-codegen:$moshi_version"
     testImplementation 'junit:junit:4.13'
     // retrofit uses 3.14.9, so shall we.