Added LocalDataSource, Repository and ViewModel to Injector. Code move and cleanup.

app/src/main/AndroidManifest.xml

@@ -14,7 +14,7 @@
         android:theme="@style/AppTheme"
         tools:ignore="GoogleAppIndexingWarning">
         <activity
-            android:name=".MainActivity"
+            android:name=".ui.MainActivity"
             android:label="@string/app_name"
             android:theme="@style/AppTheme.NoActionBar">
             <intent-filter>

app/src/main/java/com/rtbishop/lookingsat/Injector.kt

@@ -1,12 +1,19 @@
 package com.rtbishop.lookingsat
 
+import android.content.Context
+import androidx.lifecycle.ViewModelProvider
 import com.rtbishop.lookingsat.api.RemoteDataSource
 import com.rtbishop.lookingsat.api.TransmittersApi
+import com.rtbishop.lookingsat.db.LocalDataSource
+import com.rtbishop.lookingsat.db.TransmittersDatabase
+import com.rtbishop.lookingsat.repo.Repository
+import com.rtbishop.lookingsat.vm.ViewModelFactory
 import okhttp3.OkHttpClient
 import retrofit2.Retrofit
 import retrofit2.converter.gson.GsonConverterFactory
 
 object Injector {
+
     private fun provideRemoteDataSource(): RemoteDataSource {
         val api = Retrofit.Builder()
             .baseUrl("https://db.satnogs.org/api/")
@@ -18,4 +25,18 @@ object Injector {
 
         return RemoteDataSource(api, client)
     }
+
+    private fun provideLocalDataSource(context: Context): LocalDataSource {
+        val dao = TransmittersDatabase.getInstance(context).transmittersDao()
+
+        return LocalDataSource(dao)
+    }
+
+    private fun provideRepository(context: Context): Repository {
+        return Repository(provideLocalDataSource(context), provideRemoteDataSource())
+    }
+
+    private fun provideViewModelFactory(context: Context): ViewModelProvider.Factory {
+        return ViewModelFactory(provideRepository(context))
+    }
 }

app/src/main/java/com/rtbishop/lookingsat/MainViewModel.kt

@@ -1,6 +0,0 @@
-package com.rtbishop.lookingsat
-
-import android.app.Application
-import androidx.lifecycle.AndroidViewModel
-
-class MainViewModel(application: Application) : AndroidViewModel(application)

app/src/main/java/com/rtbishop/lookingsat/api/RemoteDataSource.kt

@@ -10,6 +10,7 @@ private const val TLE_AMATEUR = "https://celestrak.com/NORAD/elements/amateur.tx
 private const val TLE_WEATHER = "https://celestrak.com/NORAD/elements/weather.txt"
 
 class RemoteDataSource(private val api: TransmittersApi, private val client: OkHttpClient) {
+
     private val requestAmateur = Request.Builder().url(TLE_AMATEUR).build()
     private val requestWeather = Request.Builder().url(TLE_WEATHER).build()
 

app/src/main/java/com/rtbishop/lookingsat/repo/Repository.kt

@@ -1,3 +1,9 @@
 package com.rtbishop.lookingsat.repo
 
-class Repository
+import com.rtbishop.lookingsat.api.RemoteDataSource
+import com.rtbishop.lookingsat.db.LocalDataSource
+
+class Repository(
+    private val localSource: LocalDataSource,
+    private val remoteSource: RemoteDataSource
+)

app/src/main/java/com/rtbishop/lookingsat/ui/CreditsFragment.kt

@@ -10,7 +10,8 @@ import com.rtbishop.lookingsat.R
 class CreditsFragment : Fragment() {
 
     override fun onCreateView(
-        inflater: LayoutInflater, container: ViewGroup?,
+        inflater: LayoutInflater,
+        container: ViewGroup?,
         savedInstanceState: Bundle?
     ): View? {
         return inflater.inflate(R.layout.fragment_credits, container, false)

app/src/main/java/com/rtbishop/lookingsat/ui/MainActivity.kt

@@ -1,4 +1,4 @@
-package com.rtbishop.lookingsat
+package com.rtbishop.lookingsat.ui
 
 import android.Manifest
 import android.content.Intent
@@ -33,6 +33,8 @@ import androidx.preference.PreferenceManager
 import com.google.android.gms.location.FusedLocationProviderClient
 import com.google.android.gms.location.LocationServices
 import com.google.android.material.navigation.NavigationView
+import com.rtbishop.lookingsat.R
+import com.rtbishop.lookingsat.vm.MainViewModel
 import java.util.*
 import java.util.concurrent.TimeUnit
 
@@ -86,7 +88,12 @@ class MainActivity : AppCompatActivity() {
         drawerGetLocation = header.findViewById(R.id.drawer_get_location)
         val navController = findNavController(R.id.nav_host)
 
-        appBarConfig = AppBarConfiguration(setOf(R.id.nav_sky, R.id.nav_single_sat), drawerLayout)
+        appBarConfig = AppBarConfiguration(
+            setOf(
+                R.id.nav_sky,
+                R.id.nav_single_sat
+            ), drawerLayout
+        )
         setupActionBarWithNavController(navController, appBarConfig)
         navView.setupWithNavController(navController)
 
@@ -111,7 +118,12 @@ class MainActivity : AppCompatActivity() {
             openGitHub()
         }
 
-        drawerGetLocation.startAnimation(AnimationUtils.loadAnimation(this, R.anim.pulse))
+        drawerGetLocation.startAnimation(
+            AnimationUtils.loadAnimation(
+                this,
+                R.anim.pulse
+            )
+        )
         drawerGetLocation.setOnClickListener {
             it.isEnabled = false
             updateLocation()
@@ -146,11 +158,22 @@ class MainActivity : AppCompatActivity() {
     }
 
     private fun updateLocation() {
-        if (ContextCompat.checkSelfPermission(this, LOCATION_PERM) != GRANTED) {
-            if (ActivityCompat.shouldShowRequestPermissionRationale(this, LOCATION_PERM)) {
+        if (ContextCompat.checkSelfPermission(
+                this,
+                LOCATION_PERM
+            ) != GRANTED
+        ) {
+            if (ActivityCompat.shouldShowRequestPermissionRationale(
+                    this,
+                    LOCATION_PERM
+                )
+            ) {
                 Toast.makeText(this, "Missing permissions", Toast.LENGTH_LONG).show()
             } else {
-                ActivityCompat.requestPermissions(this, arrayOf(LOCATION_PERM), LOCATION_REQ)
+                ActivityCompat.requestPermissions(
+                    this, arrayOf(LOCATION_PERM),
+                    LOCATION_REQ
+                )
             }
         } else {
             getPreciseLocation()

app/src/main/java/com/rtbishop/lookingsat/ui/RadarFragment.kt

@@ -5,20 +5,15 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import androidx.fragment.app.Fragment
-import androidx.lifecycle.ViewModelProviders
-import com.rtbishop.lookingsat.MainViewModel
 import com.rtbishop.lookingsat.R
 
 class RadarFragment : Fragment() {
 
-    private lateinit var viewModel: MainViewModel
-
     override fun onCreateView(
         inflater: LayoutInflater,
         container: ViewGroup?,
         savedInstanceState: Bundle?
     ): View? {
-        viewModel = ViewModelProviders.of(this).get(MainViewModel::class.java)
         return inflater.inflate(R.layout.fragment_radar, container, false)
     }
 }

app/src/main/java/com/rtbishop/lookingsat/ui/SkyFragment.kt

@@ -5,20 +5,15 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import androidx.fragment.app.Fragment
-import androidx.lifecycle.ViewModelProviders
-import com.rtbishop.lookingsat.MainViewModel
 import com.rtbishop.lookingsat.R
 
 class SkyFragment : Fragment() {
 
-    private lateinit var viewModel: MainViewModel
-
     override fun onCreateView(
         inflater: LayoutInflater,
         container: ViewGroup?,
         savedInstanceState: Bundle?
     ): View? {
-        viewModel = ViewModelProviders.of(this).get(MainViewModel::class.java)
         return inflater.inflate(R.layout.fragment_sky, container, false)
     }
 }

app/src/main/java/com/rtbishop/lookingsat/ui/WorldMapFragment.kt

@@ -5,20 +5,15 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import androidx.fragment.app.Fragment
-import androidx.lifecycle.ViewModelProviders
-import com.rtbishop.lookingsat.MainViewModel
 import com.rtbishop.lookingsat.R
 
 class WorldMapFragment : Fragment() {
 
-    private lateinit var viewModel: MainViewModel
-
     override fun onCreateView(
         inflater: LayoutInflater,
         container: ViewGroup?,
         savedInstanceState: Bundle?
     ): View? {
-        viewModel = ViewModelProviders.of(this).get(MainViewModel::class.java)
         return inflater.inflate(R.layout.fragment_worldmap, container, false)
     }
 }

app/src/main/java/com/rtbishop/lookingsat/vm/MainViewModel.kt

@@ -0,0 +1,6 @@
+package com.rtbishop.lookingsat.vm
+
+import androidx.lifecycle.ViewModel
+import com.rtbishop.lookingsat.repo.Repository
+
+class MainViewModel(private val repository: Repository) : ViewModel()

app/src/main/java/com/rtbishop/lookingsat/vm/ViewModelFactory.kt

@@ -0,0 +1,15 @@
+package com.rtbishop.lookingsat.vm
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.ViewModelProvider
+import com.rtbishop.lookingsat.repo.Repository
+
+class ViewModelFactory(private val repository: Repository) : ViewModelProvider.Factory {
+    override fun <T : ViewModel?> create(modelClass: Class<T>): T {
+        if (modelClass.isAssignableFrom(MainViewModel::class.java)) {
+            @Suppress("UNCHECKED_CAST")
+            return MainViewModel(repository) as T
+        }
+        throw IllegalArgumentException("Unknown ViewModel")
+    }
+}

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

@@ -4,7 +4,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context=".MainActivity">
+    tools:context=".ui.MainActivity">
 
     <com.google.android.material.appbar.AppBarLayout
         android:layout_width="match_parent"