Add: Main app, main activity and navigation handling

app/src/main/AndroidManifest.xml

@@ -3,13 +3,32 @@
     package="dev.carlos.acronyms"
     >
 
+  <uses-permission android:name="android.permission.INTERNET" />
+
   <application
+      android:name=".MainApplication"
       android:allowBackup="true"
-      android:label="@string/app_name"
+      android:fullBackupContent="false"
       android:icon="@mipmap/ic_launcher"
+      android:label="@string/app_name"
       android:roundIcon="@mipmap/ic_launcher_round"
-      android:supportsRtl="true"
+      android:supportsRtl="false"
       android:theme="@style/Theme.Acronyms"
-      />
+      android:hardwareAccelerated="true"
+      >
+
+    <activity
+        android:name=".views.MainActivity"
+        android:launchMode="singleTask"
+        >
+      <intent-filter>
+        <action android:name="android.intent.action.MAIN" />
+        <action android:name="android.intent.action.VIEW" />
+
+        <category android:name="android.intent.category.LAUNCHER" />
+      </intent-filter>
+    </activity>
+
+  </application>
 
 </manifest>

app/src/main/java/dev/carlos/acronyms/MainApplication.kt

@@ -0,0 +1,32 @@
+package dev.carlos.acronyms
+
+import android.app.Application
+import dev.carlos.acronyms.di.appModules
+import org.koin.android.ext.koin.androidContext
+import org.koin.core.context.startKoin
+import timber.log.Timber
+
+@Suppress("unused")
+class MainApplication : Application() {
+    override fun onCreate() {
+        super.onCreate()
+        setupLogger()
+        setupDi()
+    }
+
+    private fun setupLogger() {
+        Timber.plant(Timber.DebugTree())
+    }
+
+    private fun setupDi() {
+        startKoin {
+            androidContext(this@MainApplication)
+
+            modules(
+                listOf(
+                    appModules
+                )
+            )
+        }
+    }
+}

app/src/main/java/dev/carlos/acronyms/di/AppModules.kt

@@ -0,0 +1,17 @@
+package dev.carlos.acronyms.di
+
+import dev.carlos.acronyms.BuildConfig
+import dev.carlos.acronyms.viewmodel.NavigationViewmodel
+import dev.carlos.core.domain.network.RemoteClient
+import dev.carlos.core.navigation.NavigationRouter
+import org.koin.androidx.viewmodel.dsl.viewModel
+import org.koin.dsl.module
+
+val appModules = module {
+    // Retrofit
+    single { RemoteClient(BuildConfig.BASE_ENDPOINT) }
+
+    // Navigation
+    single { NavigationRouter() }
+    viewModel { NavigationViewmodel() }
+}

app/src/main/java/dev/carlos/acronyms/viewmodel/NavigationViewmodel.kt

@@ -0,0 +1,18 @@
+package dev.carlos.acronyms.viewmodel
+
+import android.os.Bundle
+import androidx.annotation.IdRes
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+import dev.carlos.core.navigation.NavigationEvent
+
+class NavigationViewmodel : ViewModel() {
+
+    val navigate = MutableLiveData<Pair<@IdRes Int, Bundle>>()
+
+    fun onNavigationEvent(event: NavigationEvent) {
+        when (event) {
+            else -> throw NoWhenBranchMatchedException("Undefined navigation event parent")
+        }
+    }
+}

app/src/main/java/dev/carlos/acronyms/views/MainActivity.kt

@@ -0,0 +1,43 @@
+package dev.carlos.acronyms.views
+
+import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+import androidx.navigation.findNavController
+import androidx.navigation.ui.NavigationUI
+import dev.carlos.acronyms.R
+import dev.carlos.acronyms.di.appModules
+import dev.carlos.acronyms.viewmodel.NavigationViewmodel
+import dev.carlos.core.extensions.findNavHostFragment
+import dev.carlos.core.extensions.observeNonNull
+import dev.carlos.core.navigation.NavigationRouter
+import org.koin.android.ext.android.inject
+import org.koin.android.ext.koin.androidContext
+import org.koin.androidx.viewmodel.ext.android.viewModel
+import org.koin.core.context.startKoin
+
+class MainActivity : AppCompatActivity() {
+
+    private val navController by lazy { findNavController(R.id.main_fragment_container) }
+    private val navRouter: NavigationRouter by inject()
+    private val viewModel: NavigationViewmodel by viewModel()
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+        setupNavigation()
+    }
+
+    private fun setupNavigation() {
+        navController.setGraph(R.navigation.main_navigation)
+        navRouter.setOnNavigationEvent {
+            viewModel.onNavigationEvent(it)
+        }
+        viewModel.navigate.observeNonNull(this) { pair ->
+            // Pair.first is a Navigation Id
+            // Pair.second is a Bundle
+            navController.navigate(pair.first, pair.second)
+        }
+
+        NavigationUI.setupActionBarWithNavController(this, navController)
+    }
+}

app/src/main/res/layout/activity_main.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    >
+
+  <androidx.fragment.app.FragmentContainerView
+      android:id="@+id/main_fragment_container"
+      android:name="androidx.navigation.fragment.NavHostFragment"
+      android:layout_width="match_parent"
+      android:layout_height="0dp"
+      app:defaultNavHost="true"
+      app:layout_constraintBottom_toBottomOf="parent"
+      app:layout_constraintEnd_toEndOf="parent"
+      app:layout_constraintStart_toStartOf="parent"
+      app:layout_constraintTop_toTopOf="parent"
+      />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/navigation/main_navigation.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<navigation xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/main_navigation"
+    >
+
+</navigation>