Merge pull request #15 from brandy-kay/feature/alarm_manager

app/build.gradle.kts

@@ -40,7 +40,7 @@ android {
             isMinifyEnabled = false
             proguardFiles(
                 getDefaultProguardFile("proguard-android-optimize.txt"),
-                "proguard-rules.pro"
+                "proguard-rules.pro",
             )
         }
     }

app/src/debug/res/drawable/ic_notification.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#000000"
+    android:viewportHeight="24" android:viewportWidth="24"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="@android:color/white" android:pathData="M12,22c1.1,0 2,-0.9 2,-2h-4c0,1.1 0.89,2 2,2zM18,16v-5c0,-3.07 -1.64,-5.64 -4.5,-6.32L13.5,4c0,-0.83 -0.67,-1.5 -1.5,-1.5s-1.5,0.67 -1.5,1.5v0.68C7.63,5.36 6,7.92 6,11v5l-2,2v1h16v-1l-2,-2z"/>
+</vector>

app/src/main/AndroidManifest.xml

@@ -5,6 +5,9 @@
 
     <uses-permission android:name="android.permission.INTERNET"/>
 
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
+    <uses-permission android:name="android.permission.USE_EXACT_ALARM" />
+
     <application
         android:name=".QuenchApp"
         android:allowBackup="true"
@@ -27,6 +30,7 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+        <receiver android:name=".util.AlarmReceiver" />
     </application>
 
 </manifest>

app/src/main/java/com/brandyodhiambo/quench/ui/MainActivity.kt

@@ -4,23 +4,31 @@ import android.annotation.SuppressLint
 import android.os.Bundle
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
+import androidx.activity.viewModels
 import androidx.compose.animation.ExperimentalAnimationApi
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.material.MaterialTheme
 import androidx.compose.material.Surface
+import androidx.compose.runtime.livedata.observeAsState
 import androidx.compose.ui.Modifier
 import androidx.navigation.NavDestination
 import androidx.navigation.NavDestination.Companion.hierarchy
+import com.brandyodhiambo.common.domain.model.AlarmData
 import com.brandyodhiambo.designsystem.theme.QuenchTheme
+import com.brandyodhiambo.home.presentation.home_screen.HomeViewModel
+import com.brandyodhiambo.quench.R
 import com.brandyodhiambo.quench.navigation.FeatureNavigator
 import com.brandyodhiambo.quench.navigation.NavGraphs
+import com.brandyodhiambo.quench.util.AlarmSchedularImpl
+import com.brandyodhiambo.quench.util.createChannel
 import com.google.accompanist.navigation.animation.rememberAnimatedNavController
 import com.ramcosta.composedestinations.DestinationsNavHost
 import com.ramcosta.composedestinations.navigation.dependency
 import com.ramcosta.composedestinations.rememberNavHostEngine
 import com.ramcosta.composedestinations.scope.DestinationScope
 import com.ramcosta.composedestinations.spec.NavGraphSpec
 import dagger.hilt.android.AndroidEntryPoint
+import java.time.LocalDateTime
 
 @AndroidEntryPoint
 class MainActivity : ComponentActivity() {
@@ -29,13 +37,23 @@ class MainActivity : ComponentActivity() {
     @SuppressLint("UnusedMaterialScaffoldPaddingParameter")
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
+        val viewModel: HomeViewModel by viewModels()
         setContent {
+            createChannel(this)
             QuenchTheme {
-                // A surface container using the 'background' color from the theme
                 Surface(
                     modifier = Modifier.fillMaxSize(),
                     color = MaterialTheme.colors.background,
                 ) {
+                    val reminderTimeFromDb = viewModel.reminderTime.observeAsState()
+                    val hours = reminderTimeFromDb.value?.hour ?: 0
+                    val minutes = reminderTimeFromDb.value?.minute ?: 0
+                    val scheduler = AlarmSchedularImpl(this)
+                    val alarmItem = AlarmData(
+                        time = LocalDateTime.now().withHour(hours).withMinute(minutes),
+                        message = getString(R.string.it_s_time_to_drink_water),
+                    )
+                    alarmItem.let(scheduler::schedule)
                     val navController = rememberAnimatedNavController()
                     val navHostEngine = rememberNavHostEngine()
 

app/src/main/java/com/brandyodhiambo/quench/util/AlarmReceiver.kt

@@ -0,0 +1,26 @@
+package com.brandyodhiambo.quench.util
+
+import android.app.NotificationManager
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import androidx.core.content.ContextCompat
+
+class AlarmReceiver : BroadcastReceiver() {
+
+    override fun onReceive(context: Context?, intent: Intent?) {
+        val message = intent?.getStringExtra("EXTRA_MESSAGE") ?: return
+        println("Alarm triggered: $message")
+        val notificationManager =
+            ContextCompat.getSystemService(
+                context!!,
+                NotificationManager::class.java,
+            ) as NotificationManager
+
+        notificationManager.sendReminderNotification(
+            context = context,
+            title = "Drink Water",
+            message = message,
+        )
+    }
+}

app/src/main/java/com/brandyodhiambo/quench/util/AlarmSchedular.kt

@@ -0,0 +1,9 @@
+package com.brandyodhiambo.quench.util
+
+import com.brandyodhiambo.common.domain.model.AlarmData
+
+interface AlarmSchedular {
+
+    fun schedule(item: AlarmData)
+    fun cancel(item: AlarmData)
+}

app/src/main/java/com/brandyodhiambo/quench/util/AlarmSchedularImpl.kt

@@ -0,0 +1,42 @@
+package com.brandyodhiambo.quench.util
+
+import android.app.AlarmManager
+import android.app.PendingIntent
+import android.content.Context
+import android.content.Intent
+import com.brandyodhiambo.common.domain.model.AlarmData
+import java.time.ZoneId
+
+class AlarmSchedularImpl(
+    private val context: Context,
+) : AlarmSchedular {
+
+    private val alarmManager = context.getSystemService(AlarmManager::class.java)
+
+    override fun schedule(item: AlarmData) {
+        val intent = Intent(context, AlarmReceiver::class.java).apply {
+            putExtra("EXTRA_MESSAGE", item.message)
+        }
+        alarmManager.setExactAndAllowWhileIdle(
+            AlarmManager.RTC_WAKEUP,
+            item.time.atZone(ZoneId.systemDefault()).toInstant().toEpochMilli(),
+            PendingIntent.getBroadcast(
+                context,
+                item.hashCode(),
+                intent,
+                PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE,
+            ),
+        )
+    }
+
+    override fun cancel(item: AlarmData) {
+        alarmManager.cancel(
+            PendingIntent.getBroadcast(
+                context,
+                item.hashCode(),
+                Intent(context, AlarmReceiver::class.java),
+                PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE,
+            ),
+        )
+    }
+}

app/src/main/java/com/brandyodhiambo/quench/util/NotificationUtil.kt

@@ -0,0 +1,52 @@
+package com.brandyodhiambo.quench.util
+
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.app.PendingIntent
+import android.content.Context
+import android.content.Intent
+import android.media.RingtoneManager
+import androidx.core.app.NotificationCompat
+import com.brandyodhiambo.quench.R
+import com.brandyodhiambo.quench.ui.MainActivity
+
+private const val NOTIFICATION_ID = 33
+private const val CHANNEL_ID = "ReminderChannel"
+
+fun createChannel(context: Context) {
+    val notificationChannel =
+        NotificationChannel(CHANNEL_ID, "Channel1", NotificationManager.IMPORTANCE_HIGH)
+    val notificationManager = context.getSystemService(NotificationManager::class.java)
+    notificationManager.createNotificationChannel(notificationChannel)
+}
+
+fun NotificationManager.sendReminderNotification(
+    context: Context,
+    title: String,
+    message: String,
+
+) {
+    // Opening the Notification
+    val contentIntent = Intent(context, MainActivity::class.java)
+    val contentPendingIntent = PendingIntent.getActivity(
+        context,
+        NOTIFICATION_ID,
+        contentIntent,
+        PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE,
+    )
+    // Building the notification
+    val builder = NotificationCompat.Builder(context, CHANNEL_ID)
+        .setContentTitle(title)
+        .setContentText(message)
+        .setStyle(
+            NotificationCompat.BigTextStyle()
+                .bigText(message),
+        )
+        .setSmallIcon(R.drawable.ic_notification)
+        .setPriority(NotificationCompat.PRIORITY_HIGH)
+        .setSound(RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION))
+        .setContentIntent(contentPendingIntent)
+        .build()
+
+    this.notify(NOTIFICATION_ID, builder)
+}

app/src/main/res/values/strings.xml

@@ -1,3 +1,4 @@
 <resources>
     <string name="app_name">Quench</string>
+    <string name="it_s_time_to_drink_water">It\'s time to drink water</string>
 </resources>

buildSrc/src/main/java/AndroidConfig.kt

@@ -1,6 +1,6 @@
 object AndroidConfig{
     const val applicationId = "com.brandyodhiambo.quench"
-    const val minSdk = 21
+    const val minSdk = 26
     const val targetSdk = 33
     const val compileSdk = 33
     const val versionCode = 1

core/common/src/main/AndroidManifest.xml

@@ -1,4 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
+    <uses-permission android:name="android.permission.SCHEDULE_EXACT_ALARM" />
 </manifest>

core/common/src/main/java/com/brandyodhiambo/common/domain/model/AlarmData.kt

@@ -0,0 +1,8 @@
+package com.brandyodhiambo.common.domain.model
+
+import java.time.LocalDateTime
+
+data class AlarmData(
+    val time: LocalDateTime,
+    val message: String,
+)

core/common/src/main/java/com/brandyodhiambo/common/util/Function.kt

@@ -23,3 +23,6 @@ fun String.toInitials(): String {
         .mapNotNull { it.firstOrNull()?.toString() }
         .reduce { acc, s -> acc + s }
 }
+
+
+