feat(android): basic widget implementation

This needs a Glance version of LobstersCard to function

android/build.gradle.kts

@@ -65,6 +65,8 @@ dependencies {
   implementation(platform(libs.androidx.compose.bom))
   implementation(platform(libs.okhttp.bom))
   implementation(libs.androidx.activity.compose)
+  implementation(libs.androidx.compose.glance)
+  implementation(libs.androidx.compose.glance.m3)
   implementation(libs.androidx.compose.material)
   implementation(libs.androidx.compose.material.icons.extended)
   implementation(libs.androidx.compose.material3)

android/src/main/AndroidManifest.xml

@@ -155,6 +155,15 @@
         <action android:name="androidx.profileinstaller.action.BENCHMARK_OPERATION" />
       </intent-filter>
     </receiver>
+    <receiver android:name=".glance.WidgetReceiver"
+        android:exported="true">
+      <intent-filter>
+        <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+      </intent-filter>
+      <meta-data
+          android:name="android.appwidget.provider"
+          android:resource="@xml/saved_posts_widget_info" />
+    </receiver>
     <!-- Required: set your sentry.io project identifier (DSN) -->
     <meta-data android:name="io.sentry.dsn" android:value="${sentryDsn}" />
     <!-- enable automatic breadcrumbs for user interactions (clicks, swipes, scrolls) -->

android/src/main/kotlin/dev/msfjarvis/claw/android/glance/SavedPostsWidget.kt

@@ -0,0 +1,47 @@
+/*
+ * Copyright © 2023 Harsh Shandilya.
+ * Use of this source code is governed by an MIT-style
+ * license that can be found in the LICENSE file or at
+ * https://opensource.org/licenses/MIT.
+ */
+package dev.msfjarvis.claw.android.glance
+
+import android.content.Context
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.glance.GlanceId
+import androidx.glance.GlanceModifier
+import androidx.glance.appwidget.GlanceAppWidget
+import androidx.glance.appwidget.lazy.LazyColumn
+import androidx.glance.appwidget.lazy.items
+import androidx.glance.appwidget.provideContent
+import androidx.glance.layout.Alignment
+import androidx.glance.layout.fillMaxSize
+import androidx.glance.text.Text
+import androidx.glance.text.TextStyle
+import dev.msfjarvis.claw.database.local.SavedPost
+import java.time.Month
+import kotlinx.collections.immutable.ImmutableMap
+import kotlinx.collections.immutable.persistentMapOf
+import kotlinx.coroutines.flow.Flow
+
+class SavedPostsWidget(
+  private val savedPosts: Flow<ImmutableMap<Month, List<SavedPost>>>,
+) : GlanceAppWidget() {
+  override suspend fun provideGlance(context: Context, id: GlanceId) {
+    provideContent { MyContent() }
+  }
+
+  @Composable
+  private fun MyContent() {
+    val posts by savedPosts.collectAsState(persistentMapOf())
+
+    LazyColumn(
+      modifier = GlanceModifier.fillMaxSize(),
+      horizontalAlignment = Alignment.CenterHorizontally
+    ) {
+      items(posts.values.flatten()) { post -> Text(post.title, style = TextStyle()) }
+    }
+  }
+}

android/src/main/kotlin/dev/msfjarvis/claw/android/glance/WidgetReceiver.kt

@@ -0,0 +1,30 @@
+/*
+ * Copyright © 2023 Harsh Shandilya.
+ * Use of this source code is governed by an MIT-style
+ * license that can be found in the LICENSE file or at
+ * https://opensource.org/licenses/MIT.
+ */
+package dev.msfjarvis.claw.android.glance
+
+import android.content.Context
+import android.content.Intent
+import androidx.glance.appwidget.GlanceAppWidget
+import androidx.glance.appwidget.GlanceAppWidgetReceiver
+import com.deliveryhero.whetstone.Whetstone
+import com.deliveryhero.whetstone.broadcastreceiver.ContributesBroadcastReceiverInjector
+import dev.msfjarvis.claw.android.viewmodel.ClawViewModel
+import javax.inject.Inject
+
+@ContributesBroadcastReceiverInjector
+class WidgetReceiver : GlanceAppWidgetReceiver() {
+
+  @Inject lateinit var viewModel: ClawViewModel
+
+  override val glanceAppWidget: GlanceAppWidget
+    get() = SavedPostsWidget(viewModel.savedPosts)
+
+  override fun onReceive(context: Context, intent: Intent) {
+    Whetstone.inject(this, context)
+    super.onReceive(context, intent)
+  }
+}

android/src/main/res/xml/saved_posts_widget_info.xml

@@ -0,0 +1,15 @@
+<!--
+ ~ Copyright © 2023 Harsh Shandilya.
+ ~ Use of this source code is governed by an MIT-style
+ ~ license that can be found in the LICENSE file or at
+ ~ https://opensource.org/licenses/MIT.
+ -->
+<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
+    android:initialLayout="@layout/glance_default_loading_layout"
+    android:minWidth="250dp"
+    android:minHeight="110dp"
+    android:minResizeWidth="250dp"
+    android:minResizeHeight="110dp"
+    android:resizeMode="vertical|horizontal"
+    android:updatePeriodMillis="1800000"
+    android:widgetCategory="home_screen" />