Add date to Card UI

Bug: 222090934

Change-Id: Ibd782b722aba4b38bc4113c4f036757c6075509c

core-ui/build.gradle

@@ -28,6 +28,7 @@ android {
     compileOptions {
         sourceCompatibility JavaVersion.VERSION_1_8
         targetCompatibility JavaVersion.VERSION_1_8
+        coreLibraryDesugaringEnabled true
     }
     kotlinOptions {
         jvmTarget = '1.8'
@@ -43,6 +44,8 @@ android {
 dependencies {
     implementation project(':core-model')
 
+    coreLibraryDesugaring libs.android.desugarJdkLibs
+
     implementation libs.androidx.core.ktx
     implementation libs.coil.kt
     implementation libs.coil.kt.compose

core-ui/src/main/java/com/google/samples/apps/nowinandroid/core/ui/NewsResourceCard.kt

@@ -37,11 +37,17 @@ import androidx.compose.material3.IconToggleButton
 import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.DisposableEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
 import androidx.compose.ui.layout.ContentScale
 import androidx.compose.ui.platform.LocalConfiguration
+import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.semantics.onClick
 import androidx.compose.ui.semantics.semantics
@@ -54,7 +60,10 @@ import com.google.samples.apps.nowinandroid.core.model.data.NewsResource
 import com.google.samples.apps.nowinandroid.core.model.data.NewsResourceType.Article
 import com.google.samples.apps.nowinandroid.core.model.data.Topic
 import com.google.samples.apps.nowinandroid.core.ui.theme.NiaTheme
+import java.time.ZoneId
+import java.time.format.DateTimeFormatter
 import kotlinx.datetime.Instant
+import kotlinx.datetime.toJavaInstant
 
 /**
  * [NewsResource] card used on the following screens: For You, Episodes, Saved
@@ -90,6 +99,8 @@ fun NewsResourceCardExpanded(
             BookmarkButton(isBookmarked, onToggleBookmark)
         }
         Spacer(modifier = Modifier.height(12.dp))
+        NewsResourceDate(newsResource.publishDate)
+        Spacer(modifier = Modifier.height(12.dp))
         NewsResourceShortDescription(newsResource.content)
     }
 }
@@ -181,11 +192,31 @@ fun BookmarkButton(
     }
 }
 
+@Composable
+private fun dateFormatted(publishDate: Instant): String {
+    var zoneId by remember { mutableStateOf(ZoneId.systemDefault()) }
+
+    val context = LocalContext.current
+
+    DisposableEffect(context) {
+        val receiver = TimeZoneBroadcastReceiver(
+            onTimeZoneChanged = { zoneId = ZoneId.systemDefault() }
+        )
+        receiver.register(context)
+        onDispose {
+            receiver.unregister(context)
+        }
+    }
+
+    return DateTimeFormatter.ofPattern("MMM d, yyyy")
+        .withZone(zoneId).format(publishDate.toJavaInstant())
+}
+
 @Composable
 fun NewsResourceDate(
-    newsResource: NewsResource
+    publishDate: Instant
 ) {
-    TODO()
+    Text(dateFormatted(publishDate), style = MaterialTheme.typography.body2)
 }
 
 @Composable

core-ui/src/main/java/com/google/samples/apps/nowinandroid/core/ui/TimeZoneBroadcastReceiver.kt

@@ -0,0 +1,50 @@
+/*
+ * Copyright 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.samples.apps.nowinandroid.core.ui
+
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import android.content.IntentFilter
+
+class TimeZoneBroadcastReceiver(
+    val onTimeZoneChanged: () -> Unit
+) : BroadcastReceiver() {
+    private var registered = false
+
+    override fun onReceive(context: Context, intent: Intent) {
+        if (intent.action == Intent.ACTION_TIMEZONE_CHANGED) {
+            onTimeZoneChanged()
+        }
+    }
+
+    fun register(context: Context) {
+        if (!registered) {
+            val filter = IntentFilter()
+            filter.addAction(Intent.ACTION_TIMEZONE_CHANGED)
+            context.registerReceiver(this, filter)
+            registered = true
+        }
+    }
+
+    fun unregister(context: Context) {
+        if (registered) {
+            context.unregisterReceiver(this)
+            registered = false
+        }
+    }
+}