Add Daily Puzzle home screen widget for iOS and Android

android/app/build.gradle.kts

@@ -4,6 +4,7 @@ import java.io.FileInputStream
 plugins {
     id("com.android.application")
     id("kotlin-android")
+    id("org.jetbrains.kotlin.plugin.compose")
     // The Flutter Gradle Plugin must be applied after the Android and Kotlin Gradle plugins.
     id("dev.flutter.flutter-gradle-plugin")
     id("com.google.gms.google-services")
@@ -21,6 +22,10 @@ android {
     compileSdk = flutter.compileSdkVersion
     ndkVersion = flutter.ndkVersion
 
+    buildFeatures {
+        compose = true
+    }
+
     compileOptions {
         // Flag required by flutter_local_notifications package
         isCoreLibraryDesugaringEnabled = true
@@ -88,4 +93,5 @@ dependencies {
     // Dependency required by flutter_local_notifications package
     coreLibraryDesugaring("com.android.tools:desugar_jdk_libs:2.1.4")
     implementation("androidx.core:core-splashscreen:1.0.1")
+    implementation("androidx.glance:glance-appwidget:1.1.1")
 }

android/app/src/main/AndroidManifest.xml

@@ -55,6 +55,16 @@
         </activity>
         <receiver android:exported="false"
             android:name="com.dexterous.flutterlocalnotifications.ActionBroadcastReceiver"/>
+        <receiver
+            android:name=".DailyPuzzleWidgetReceiver"
+            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/daily_puzzle_widget_info" />
+        </receiver>
         <!-- Don't delete the meta-data below.
              This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
         <meta-data

android/app/src/main/kotlin/org/lichess/mobileV2/DailyPuzzleWidget.kt

@@ -0,0 +1,127 @@
+package org.lichess.mobileV2
+
+import android.content.Context
+import android.graphics.BitmapFactory
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.glance.GlanceId
+import androidx.glance.GlanceModifier
+import androidx.glance.GlanceTheme
+import androidx.glance.Image
+import androidx.glance.ImageProvider
+import androidx.glance.action.actionStartActivity
+import androidx.glance.action.clickable
+import androidx.glance.appwidget.GlanceAppWidget
+import androidx.glance.appwidget.SizeMode
+import androidx.glance.appwidget.provideContent
+import androidx.glance.currentState
+import androidx.glance.background
+import androidx.glance.layout.Alignment
+import androidx.glance.layout.Box
+import androidx.glance.layout.Column
+import androidx.glance.layout.ContentScale
+import androidx.glance.layout.Row
+import androidx.glance.layout.Spacer
+import androidx.glance.layout.fillMaxSize
+import androidx.glance.layout.fillMaxWidth
+import androidx.glance.layout.height
+import androidx.glance.layout.padding
+import androidx.glance.layout.size
+import androidx.glance.layout.width
+import androidx.glance.text.FontWeight
+import androidx.glance.text.Text
+import androidx.glance.text.TextStyle
+import es.antonborri.home_widget.HomeWidgetGlanceState
+import es.antonborri.home_widget.HomeWidgetGlanceStateDefinition
+
+class DailyPuzzleWidget : GlanceAppWidget() {
+
+    override val stateDefinition = HomeWidgetGlanceStateDefinition()
+
+    override val sizeMode = SizeMode.Single
+
+    override suspend fun provideGlance(context: Context, id: GlanceId) {
+        provideContent {
+            GlanceTheme {
+                DailyPuzzleContent(context)
+            }
+        }
+    }
+
+    @Composable
+    private fun DailyPuzzleContent(context: Context) {
+        val state = currentState<HomeWidgetGlanceState>()
+        val prefs = state.preferences
+        val puzzleId = prefs.getString("puzzle_id", null)
+        val sideToMove = prefs.getString("puzzle_side_to_move", null)
+        val plays = prefs.getInt("puzzle_plays", 0)
+        val imagePath = prefs.getString("puzzle_board_image", null)
+
+        val intent = android.content.Intent(
+            android.content.Intent.ACTION_VIEW,
+            android.net.Uri.parse(
+                if (puzzleId != null) "https://lichess.org/training/$puzzleId"
+                else "https://lichess.org/training/daily"
+            )
+        )
+
+        Box(
+            modifier = GlanceModifier
+                .fillMaxSize()
+                .padding(8.dp)
+                .clickable(actionStartActivity<MainActivity>()),
+            contentAlignment = Alignment.Center,
+        ) {
+            if (puzzleId != null) {
+                Column(
+                    modifier = GlanceModifier.fillMaxSize(),
+                    horizontalAlignment = Alignment.CenterHorizontally,
+                ) {
+                    Text(
+                        text = "Daily Puzzle",
+                        style = TextStyle(fontWeight = FontWeight.Bold, fontSize = 12.sp),
+                    )
+                    Spacer(modifier = GlanceModifier.height(4.dp))
+
+                    if (imagePath != null) {
+                        val file = java.io.File(imagePath)
+                        if (file.exists()) {
+                            val bitmap = BitmapFactory.decodeFile(file.absolutePath)
+                            if (bitmap != null) {
+                                Image(
+                                    provider = ImageProvider(bitmap),
+                                    contentDescription = "Chess board",
+                                    contentScale = ContentScale.Fit,
+                                )
+                            }
+                        }
+                    }
+
+                    Spacer(modifier = GlanceModifier.height(4.dp))
+
+                    if (sideToMove != null) {
+                        Text(
+                            text = if (sideToMove == "white") "White to play" else "Black to play",
+                            style = TextStyle(fontSize = 10.sp),
+                        )
+                    }
+                }
+            } else {
+                Column(
+                    horizontalAlignment = Alignment.CenterHorizontally,
+                ) {
+                    Text(
+                        text = "Daily Puzzle",
+                        style = TextStyle(fontWeight = FontWeight.Bold, fontSize = 14.sp),
+                    )
+                    Spacer(modifier = GlanceModifier.height(8.dp))
+                    Text(
+                        text = "Open Lichess to load",
+                        style = TextStyle(fontSize = 12.sp),
+                    )
+                }
+            }
+        }
+    }
+}

android/app/src/main/kotlin/org/lichess/mobileV2/DailyPuzzleWidgetReceiver.kt

@@ -0,0 +1,7 @@
+package org.lichess.mobileV2
+
+import es.antonborri.home_widget.HomeWidgetGlanceWidgetReceiver
+
+class DailyPuzzleWidgetReceiver : HomeWidgetGlanceWidgetReceiver<DailyPuzzleWidget>() {
+    override val glanceAppWidget = DailyPuzzleWidget()
+}

android/app/src/main/res/xml/daily_puzzle_widget_info.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
+    android:initialLayout="@layout/glance_default_loading_layout"
+    android:minWidth="180dp"
+    android:minHeight="110dp"
+    android:resizeMode="horizontal|vertical"
+    android:updatePeriodMillis="86400000"
+    android:widgetCategory="home_screen">
+</appwidget-provider>

android/settings.gradle.kts

@@ -20,6 +20,7 @@ plugins {
     id("dev.flutter.flutter-plugin-loader") version "1.0.0"
     id("com.android.application") version "8.11.1" apply false
     id("org.jetbrains.kotlin.android") version "2.2.21" apply false
+    id("org.jetbrains.kotlin.plugin.compose") version "2.2.21" apply false
     id("com.google.gms.google-services") version "4.4.4" apply false
     id("com.google.firebase.crashlytics") version "3.0.6" apply false
 }