Initial commit

app/.gitignore

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+/build

app/build.gradle

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+apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
+apply plugin: 'kotlin-android-extensions'
+apply plugin: 'kotlin-kapt'
+
+android {
+    compileSdkVersion 30
+    buildToolsVersion "29.0.3"
+
+    defaultConfig {
+        applicationId "com.example.h_mal.movielisttest"
+        minSdkVersion 23
+        targetSdkVersion 30
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+        buildConfigField "String", "ParamOne", "${paramOne}"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    // To inline the bytecode built with JVM target 1.8 into
+    // bytecode that is being built with JVM target 1.6. (e.g. navArgs)
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
+}
+
+dependencies {
+    implementation fileTree(dir: "libs", include: ["*.jar"])
+    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+    implementation 'androidx.core:core-ktx:1.3.2'
+    implementation 'androidx.appcompat:appcompat:1.2.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.2'
+    implementation 'androidx.lifecycle:lifecycle-extensions:2.2.0'
+    implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.2.0'
+    implementation 'androidx.fragment:fragment-ktx:1.2.5'
+    implementation 'com.google.android.material:material:1.2.1'
+    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
+    testImplementation 'junit:junit:4.13'
+    androidTestImplementation 'junit:junit:4.12'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
+    // android unit testing and espresso
+    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
+    implementation 'androidx.test.espresso:espresso-core:3.3.0'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
+    testImplementation "org.jetbrains.kotlin:kotlin-test-junit:$kotlin_version"
+    //mock websever for testing retrofit responses
+    testImplementation "com.squareup.okhttp3:mockwebserver:4.6.0"
+    testImplementation "com.nhaarman.mockitokotlin2:mockito-kotlin:2.2.0"
+
+    //mockito and livedata testing
+    testImplementation 'org.mockito:mockito-inline:2.13.0'
+    implementation 'android.arch.core:core-testing'
+    androidTestImplementation 'androidx.test:rules:1.3.0'
+
+    //Retrofit and GSON
+    implementation 'com.squareup.retrofit2:retrofit:2.8.1'
+    implementation 'com.squareup.retrofit2:converter-gson:2.8.1'
+    implementation 'com.squareup.okhttp3:logging-interceptor:4.0.0'
+
+    //Kotlin Coroutines
+    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.4"
+    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.4"
+
+    //Kodein Dependency Injection
+    implementation "org.kodein.di:kodein-di-generic-jvm:6.2.1"
+    implementation "org.kodein.di:kodein-di-framework-android-x:6.2.1"
+
+    // Shared prefs
+    implementation "androidx.preference:preference-ktx:1.1.1"
+
+    // Picasso image display
+    implementation 'com.squareup.picasso:picasso:2.71828'
+
+    //Android Room
+    implementation "androidx.room:room-runtime:2.3.0-alpha01"
+    implementation "androidx.room:room-ktx:2.3.0-alpha01"
+    kapt "androidx.room:room-compiler:2.3.0-alpha01"
+
+    // Circle Image View
+    implementation 'com.mikhaellopez:circularimageview:4.2.0'
+}

app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

app/src/androidTest/java/com/example/h_mal/movielisttest/ExampleInstrumentedTest.kt

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+package com.example.h_mal.movielisttest
+
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.platform.app.InstrumentationRegistry
+import org.junit.Assert.assertEquals
+import org.junit.Test
+import org.junit.runner.RunWith
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+    @Test
+    fun useAppContext() {
+        // Context of the app under test.
+        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+        assertEquals("com.example.h_mal.movielisttest", appContext.packageName)
+    }
+}

app/src/androidTest/java/com/example/h_mal/movielisttest/data/room/MoviesRoomDatabaseTest.kt

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+package com.example.h_mal.movielisttest.data.room
+
+import android.content.Context
+import androidx.room.Room
+import androidx.test.core.app.ApplicationProvider
+import androidx.test.espresso.matcher.ViewMatchers.assertThat
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import kotlinx.coroutines.runBlocking
+import org.hamcrest.CoreMatchers.equalTo
+import org.junit.After
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+import java.io.IOException
+
+@RunWith(AndroidJUnit4::class)
+class MoviesRoomDatabaseTest{
+    private lateinit var simpleDao: SimpleDao
+    private lateinit var db: MoviesRoomDatabase
+
+    @Before
+    fun createDb() {
+        val context = ApplicationProvider.getApplicationContext<Context>()
+        db = Room.inMemoryDatabaseBuilder(
+            context, MoviesRoomDatabase::class.java).build()
+        simpleDao = db.getSimpleDao()
+    }
+
+    @After
+    @Throws(IOException::class)
+    fun closeDb() {
+        db.close()
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun writeEntryAndReadResponse() = runBlocking{
+        // Given
+        val entity = MovieEntity(123)
+        // When
+        simpleDao.saveAllItems(listOf(entity))
+        // Then
+        val retrieved = simpleDao.getItem(123)
+        assertThat(retrieved, equalTo(entity))
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun changeFavouriteAndRead() = runBlocking{
+        // Given
+        val entity = MovieEntity(123)
+        simpleDao.saveAllItems(listOf(entity))
+        val retrieved = simpleDao.getItem(123)
+
+        // When
+        simpleDao.updateFavourite(123)
+
+        // Then
+        val favourite = retrieved.favourites
+        val retrieveAgain = simpleDao.getItem(123)
+        assertThat(retrieveAgain.favourites, equalTo(!favourite))
+    }
+}

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.h_mal.movielisttest">
+
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.INTERNET" />
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:name=".application.MovieListApplication"
+        android:theme="@style/AppTheme">
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

app/src/main/java/com/example/h_mal/movielisttest/MainActivity.kt

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+package com.example.h_mal.movielisttest
+
+import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+import com.example.h_mal.movielisttest.ui.main.MainFragment
+
+class MainActivity : AppCompatActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.main_activity)
+        if (savedInstanceState == null) {
+            supportFragmentManager.beginTransaction()
+                    .replace(R.id.container, MainFragment())
+                    .commitNow()
+        }
+    }
+}

app/src/main/java/com/example/h_mal/movielisttest/application/MovieListApplication.kt

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+package com.example.h_mal.movielisttest.application
+
+import android.app.Application
+import com.example.h_mal.movielisttest.data.network.MoviesApi
+import com.example.h_mal.movielisttest.data.network.interceptors.NetworkConnectionInterceptor
+import com.example.h_mal.movielisttest.data.network.interceptors.QueryParamsInterceptor
+import com.example.h_mal.movielisttest.data.prefs.PreferenceProvider
+import com.example.h_mal.movielisttest.data.repository.RepositoryImpl
+import com.example.h_mal.movielisttest.data.room.MoviesRoomDatabase
+import com.example.h_mal.movielisttest.ui.main.MainViewModelFactory
+import org.kodein.di.Kodein
+import org.kodein.di.KodeinAware
+import org.kodein.di.android.x.androidXModule
+import org.kodein.di.generic.bind
+import org.kodein.di.generic.instance
+import org.kodein.di.generic.provider
+import org.kodein.di.generic.singleton
+
+class MovieListApplication : Application(), KodeinAware{
+
+    // Kodein creation of modules to be retrieve within the app
+    override val kodein = Kodein.lazy {
+        import(androidXModule(this@MovieListApplication))
+
+        bind() from singleton { NetworkConnectionInterceptor(instance()) }
+        bind() from singleton { QueryParamsInterceptor() }
+        bind() from singleton { MoviesApi(instance(), instance())}
+        bind() from singleton { MoviesRoomDatabase(instance()) }
+        bind() from singleton { PreferenceProvider(instance()) }
+        bind() from singleton { RepositoryImpl(instance(), instance(), instance()) }
+        bind() from provider { MainViewModelFactory(instance()) }
+    }
+}

app/src/main/java/com/example/h_mal/movielisttest/data/models/Movie.kt

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+package com.example.h_mal.movielisttest.data.models
+
+import com.example.h_mal.movielisttest.data.room.MovieEntity
+
+data class Movie(
+    val id: Int? = null,
+    val overview: String? = null,
+    var favourites: Boolean? = null,
+    val title: String? = null,
+    val posterPath: String? = null,
+    val releaseDate: String? = null,
+    val popularity: Double? = null,
+    val voteAverage: Double? = null
+){
+
+    constructor(movieEntity: MovieEntity): this(
+        movieEntity.id,
+        movieEntity.overview,
+        movieEntity.favourites,
+        movieEntity.title,
+        movieEntity.posterPath,
+        movieEntity.releaseDate,
+        movieEntity.popularity,
+        movieEntity.voteAverage
+    )
+}

app/src/main/java/com/example/h_mal/movielisttest/data/network/MoviesApi.kt

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+package com.example.h_mal.movielisttest.data.network
+
+import com.example.h_mal.movielisttest.data.network.interceptors.NetworkConnectionInterceptor
+import com.example.h_mal.movielisttest.data.network.interceptors.QueryParamsInterceptor
+import com.example.h_mal.movielisttest.data.network.response.MoviesResponse
+import okhttp3.OkHttpClient
+import okhttp3.logging.HttpLoggingInterceptor
+import retrofit2.Response
+import retrofit2.Retrofit
+import retrofit2.converter.gson.GsonConverterFactory
+import retrofit2.http.GET
+import retrofit2.http.Query
+
+
+interface MoviesApi {
+
+    // https://api.themoviedb.org/3/movie/popular?api_key=<api_key>&language=en-US&page=1
+    @GET("movie/popular?")
+    suspend fun getFromApi(
+        @Query("page") pageNumber: Int
+    ): Response<MoviesResponse>
+
+    companion object{
+        operator fun invoke(
+            networkConnectionInterceptor: NetworkConnectionInterceptor,
+            queryParamsInterceptor: QueryParamsInterceptor
+        ) : MoviesApi {
+
+            val baseUrl = "https://api.themoviedb.org/3/"
+
+            // okHttpClient
+            val okkHttpclient = OkHttpClient.Builder()
+                .addNetworkInterceptor(networkConnectionInterceptor)
+                .addInterceptor(queryParamsInterceptor)
+                .addInterceptor(HttpLoggingInterceptor().apply {
+                    level = HttpLoggingInterceptor.Level.BODY
+                })
+                .build()
+
+            return Retrofit.Builder()
+                .client(okkHttpclient)
+                .baseUrl(baseUrl)
+                .addConverterFactory(GsonConverterFactory.create())
+                .build()
+                .create(MoviesApi::class.java)
+        }
+    }
+}
+

app/src/main/java/com/example/h_mal/movielisttest/data/network/interceptors/NetworkConnectionInterceptor.kt

@@ -0,0 +1,42 @@
+package com.example.h_mal.movielisttest.data.network.interceptors
+
+import android.content.Context
+import android.net.ConnectivityManager
+import android.net.NetworkCapabilities
+import okhttp3.Interceptor
+import java.io.IOException
+
+/**
+ * Intercept API calls and determine if there is a connection.
+ * If no connection then @throws IOException
+ */
+class NetworkConnectionInterceptor(
+    context: Context
+) : Interceptor {
+
+    private val applicationContext = context.applicationContext
+
+    override fun intercept(chain: Interceptor.Chain): okhttp3.Response {
+        if (!isInternetAvailable()){
+            throw IOException("Make sure you have an active data connection")
+        }
+        return chain.proceed(chain.request())
+    }
+
+    private fun isInternetAvailable(): Boolean {
+        var result = false
+        val connectivityManager =
+            applicationContext.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager?
+        connectivityManager?.let {
+            it.getNetworkCapabilities(connectivityManager.activeNetwork)?.apply {
+                result = when {
+                    hasTransport(NetworkCapabilities.TRANSPORT_WIFI) -> true
+                    hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) -> true
+                    else -> false
+                }
+            }
+        }
+        return result
+    }
+
+}

app/src/main/java/com/example/h_mal/movielisttest/data/network/interceptors/QueryParamsInterceptor.kt

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+package com.example.h_mal.movielisttest.data.network.interceptors
+
+import com.example.h_mal.movielisttest.BuildConfig
+import okhttp3.Interceptor
+import okhttp3.Request
+import okhttp3.Response
+
+/**
+ * Inject query parameters into the API calls.
+ * For uniform constraints (eg. Language, sort order, page size ect)
+ * Also for injecting an API key to all api calls
+ */
+class QueryParamsInterceptor : Interceptor{
+
+    override fun intercept(chain: Interceptor.Chain): Response {
+        val original = chain.request()
+        val originalHttpUrl = original.url
+
+        val url = originalHttpUrl.newBuilder()
+            .addQueryParameter("language", "en-UK")
+            .addQueryParameter("api_key", BuildConfig.ParamOne)
+            .build()
+
+        val requestBuilder: Request.Builder = original.newBuilder()
+            .url(url)
+
+        val request: Request = requestBuilder.build()
+        return chain.proceed(request)
+    }
+}

app/src/main/java/com/example/h_mal/movielisttest/data/network/networkUtils/OkHttpClient.kt

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+package com.example.h_mal.movielisttest.data.network.networkUtils
+
+import com.example.h_mal.movielisttest.data.network.interceptors.NetworkConnectionInterceptor
+import okhttp3.OkHttpClient
+import okhttp3.logging.HttpLoggingInterceptor
+import java.util.concurrent.TimeUnit
+
+fun okHttpClient(
+    networkConnectionInterceptor: NetworkConnectionInterceptor
+
+): OkHttpClient {
+    val logging: HttpLoggingInterceptor = HttpLoggingInterceptor().apply {
+        level = HttpLoggingInterceptor.Level.BODY
+    }
+
+    return OkHttpClient.Builder()
+        .addNetworkInterceptor(networkConnectionInterceptor)
+        .addInterceptor(logging)
+        .readTimeout(5 * 60, TimeUnit.SECONDS)
+        .build()
+}

app/src/main/java/com/example/h_mal/movielisttest/data/network/networkUtils/ResponseUnwrap.kt

@@ -0,0 +1,37 @@
+package com.example.h_mal.movielisttest.data.network.networkUtils
+
+import org.json.JSONException
+import org.json.JSONObject
+import retrofit2.Response
+import java.io.IOException
+
+/**
+ * Abstract class for extracting <T> from Retrofit Response<T>
+ * Or throw IOException if the API call fails
+ */
+abstract class ResponseUnwrap {
+
+    @Suppress("BlockingMethodInNonBlockingContext")
+    suspend fun <T : Any> responseUnwrap(
+        call: suspend () -> Response<T>
+    ): T {
+
+        val response = call.invoke()
+        if (response.isSuccessful) {
+            return response.body()!!
+        } else {
+            val error = response.errorBody()?.string()
+
+            val errorMessage = error?.let {
+                try {
+                    JSONObject(it).getString("status_message")
+                } catch (e: JSONException) {
+                    e.printStackTrace()
+                    null
+                }
+            } ?: "Error Code: ${response.code()}"
+
+            throw IOException(errorMessage)
+        }
+    }
+}

app/src/main/java/com/example/h_mal/movielisttest/data/network/response/MoviesResponse.kt

@@ -0,0 +1,18 @@
+package com.example.h_mal.movielisttest.data.network.response
+
+import com.google.gson.annotations.SerializedName
+
+data class MoviesResponse(
+
+	@field:SerializedName("page")
+	val page: Int? = null,
+
+	@field:SerializedName("total_pages")
+	val totalPages: Int? = null,
+
+	@field:SerializedName("results")
+	val results: List<ResultsItem>? = null,
+
+	@field:SerializedName("total_results")
+	val totalResults: Int? = null
+)

app/src/main/java/com/example/h_mal/movielisttest/data/network/response/ResultsItem.kt

@@ -0,0 +1,48 @@
+package com.example.h_mal.movielisttest.data.network.response
+
+import com.google.gson.annotations.SerializedName
+
+data class ResultsItem(
+
+    @field:SerializedName("overview")
+    val overview: String? = null,
+
+    @field:SerializedName("original_language")
+    val originalLanguage: String? = null,
+
+    @field:SerializedName("original_title")
+    val originalTitle: String? = null,
+
+    @field:SerializedName("video")
+    val video: Boolean? = null,
+
+    @field:SerializedName("title")
+    val title: String? = null,
+
+    @field:SerializedName("genre_ids")
+    val genreIds: List<Int?>? = null,
+
+    @field:SerializedName("poster_path")
+    val posterPath: String? = null,
+
+    @field:SerializedName("backdrop_path")
+    val backdropPath: String? = null,
+
+    @field:SerializedName("release_date")
+    val releaseDate: String? = null,
+
+    @field:SerializedName("popularity")
+    val popularity: Double? = null,
+
+    @field:SerializedName("vote_average")
+    val voteAverage: Double? = null,
+
+    @field:SerializedName("id")
+    val id: Int? = null,
+
+    @field:SerializedName("adult")
+    val adult: Boolean? = null,
+
+    @field:SerializedName("vote_count")
+    val voteCount: Int? = null
+)

app/src/main/java/com/example/h_mal/movielisttest/data/prefs/PreferencesProvider.kt

@@ -0,0 +1,33 @@
+package com.example.h_mal.movielisttest.data.prefs
+
+import android.content.Context
+import android.content.SharedPreferences
+import androidx.preference.PreferenceManager
+
+/**
+ * Shared preferences to save & load last timestamp
+ */
+private const val PAGE_NUMBER = "page_number"
+class PreferenceProvider(
+    context: Context
+) {
+
+    private val appContext = context.applicationContext
+
+    private val preference: SharedPreferences
+        get() = PreferenceManager.getDefaultSharedPreferences(appContext)
+
+    fun savePageNumber() {
+        var pages = getPageNumber()
+        pages++
+        preference.edit().putInt(
+            PAGE_NUMBER,
+            pages
+        ).apply()
+    }
+
+    fun getPageNumber(): Int {
+        return preference.getInt(PAGE_NUMBER, 1)
+    }
+
+}

app/src/main/java/com/example/h_mal/movielisttest/data/repository/Repository.kt

@@ -0,0 +1,15 @@
+package com.example.h_mal.movielisttest.data.repository
+
+import androidx.lifecycle.LiveData
+import com.example.h_mal.movielisttest.data.network.response.MoviesResponse
+import com.example.h_mal.movielisttest.data.network.response.ResultsItem
+import com.example.h_mal.movielisttest.data.room.MovieEntity
+
+interface Repository {
+    suspend fun getMoviesFromApi(pageNumber: Int): MoviesResponse?
+    fun getMoviesFromDatabase(): LiveData<List<MovieEntity>>
+    suspend fun saveMoviesToDatabase(resultsItems: List<ResultsItem>)
+    suspend fun setFavourite(id: Int)
+    fun getCurrentPage(): Int
+    fun updateCurrentPage()
+}

app/src/main/java/com/example/h_mal/movielisttest/data/repository/RepositoryImpl.kt

@@ -0,0 +1,36 @@
+package com.example.h_mal.movielisttest.data.repository
+
+import com.example.h_mal.movielisttest.data.network.MoviesApi
+import com.example.h_mal.movielisttest.data.network.networkUtils.ResponseUnwrap
+import com.example.h_mal.movielisttest.data.network.response.MoviesResponse
+import com.example.h_mal.movielisttest.data.network.response.ResultsItem
+import com.example.h_mal.movielisttest.data.prefs.PreferenceProvider
+import com.example.h_mal.movielisttest.data.room.MovieEntity
+import com.example.h_mal.movielisttest.data.room.MoviesRoomDatabase
+
+class RepositoryImpl(
+    private val api: MoviesApi,
+    private val database: MoviesRoomDatabase,
+    private val preferences: PreferenceProvider
+) : Repository, ResponseUnwrap() {
+
+
+    override suspend fun getMoviesFromApi(pageNumber: Int): MoviesResponse? {
+        return responseUnwrap { api.getFromApi(pageNumber) }
+    }
+
+    override fun getMoviesFromDatabase() = database.getSimpleDao().getAllItems()
+
+    override suspend fun saveMoviesToDatabase(resultsItems: List<ResultsItem>){
+        val userList = resultsItems.map { MovieEntity(it) }
+        database.getSimpleDao().saveAllItems(userList)
+    }
+
+    override suspend fun setFavourite(id: Int) = database.getSimpleDao().updateFavourite(id)
+
+    override fun getCurrentPage(): Int = preferences.getPageNumber()
+
+    override fun updateCurrentPage(){
+        preferences.savePageNumber()
+    }
+}

app/src/main/java/com/example/h_mal/movielisttest/data/room/MovieEntity.kt

@@ -0,0 +1,29 @@
+package com.example.h_mal.movielisttest.data.room
+
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+import com.example.h_mal.movielisttest.data.network.response.ResultsItem
+
+@Entity
+data class MovieEntity(
+    @PrimaryKey(autoGenerate = false)
+    val id: Int,
+    val overview: String? = null,
+    var favourites: Boolean = false,
+    val title: String? = null,
+    val posterPath: String? = null,
+    val releaseDate: String? = null,
+    val popularity: Double? = null,
+    val voteAverage: Double? = null
+){
+    constructor(resultsItem: ResultsItem): this(
+        resultsItem.id!!,
+        resultsItem.overview,
+        false,
+        resultsItem.title,
+        "https://image.tmdb.org/t/p/w500${resultsItem.posterPath}",
+        resultsItem.releaseDate,
+        resultsItem.popularity,
+        resultsItem.voteAverage
+    )
+}

app/src/main/java/com/example/h_mal/movielisttest/data/room/MoviesRoomDatabase.kt

@@ -0,0 +1,40 @@
+package com.example.h_mal.movielisttest.data.room
+
+import android.content.Context
+import androidx.room.Database
+import androidx.room.Room
+import androidx.room.RoomDatabase
+
+
+/**
+ * Room database class for caching movies locally.
+ */
+@Database(
+    entities = [MovieEntity::class],
+    version = 1
+)
+abstract class MoviesRoomDatabase : RoomDatabase() {
+
+    abstract fun getSimpleDao(): SimpleDao
+
+    companion object {
+
+        @Volatile
+        private var instance: MoviesRoomDatabase? = null
+        private val LOCK = Any()
+
+
+        operator fun invoke(context: Context) = instance ?: synchronized(LOCK) {
+            instance ?: buildDatabase(context).also {
+                instance = it
+            }
+        }
+
+        private fun buildDatabase(context: Context) =
+            Room.databaseBuilder(
+                context.applicationContext,
+                MoviesRoomDatabase::class.java,
+                "MyDatabase.db"
+            ).build()
+    }
+}

app/src/main/java/com/example/h_mal/movielisttest/data/room/SimpleDao.kt

@@ -0,0 +1,32 @@
+package com.example.h_mal.movielisttest.data.room
+
+import androidx.lifecycle.LiveData
+import androidx.room.*
+
+@Dao
+interface SimpleDao {
+
+    @Insert(onConflict = OnConflictStrategy.IGNORE)
+    fun saveAllItems(items: List<MovieEntity>)
+
+    @Query("SELECT * FROM MovieEntity")
+    fun getAllItems(): LiveData<List<MovieEntity>>
+
+    @Query("SELECT * FROM MovieEntity WHERE id = :id")
+    suspend fun getItem(id: Int): MovieEntity
+
+    @Query("UPDATE MovieEntity SET favourites = :favourite WHERE id = :id")
+    fun setFavourite(id: Int, favourite: Boolean)
+
+    @Query("DELETE FROM MovieEntity")
+    suspend fun deleteEntries()
+
+    @Transaction
+    suspend fun updateFavourite(id: Int){
+        val fav = getItem(id).favourites
+        setFavourite(id, !fav)
+    }
+
+    @Delete
+    fun deleteEntry(movie: MovieEntity)
+}

app/src/main/java/com/example/h_mal/movielisttest/ui/main/MainFragment.kt

@@ -0,0 +1,80 @@
+package com.example.h_mal.movielisttest.ui.main
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.viewModels
+import androidx.lifecycle.Observer
+import androidx.recyclerview.widget.SimpleItemAnimator
+import com.example.h_mal.movielisttest.R
+import com.example.h_mal.movielisttest.utils.*
+import kotlinx.android.synthetic.main.empty_view_item.view.*
+import kotlinx.android.synthetic.main.main_fragment.*
+import org.kodein.di.KodeinAware
+import org.kodein.di.android.x.kodein
+import org.kodein.di.generic.instance
+
+class MainFragment : Fragment(), KodeinAware {
+    override val kodein by kodein()
+    private val factory by instance<MainViewModelFactory>()
+
+    private val viewModel by viewModels<MainViewModel> { factory }
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?,
+                              savedInstanceState: Bundle?): View {
+        return inflater.inflate(R.layout.main_fragment, container, false)
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        viewModel.operationState.observe(viewLifecycleOwner, stateObserver)
+        viewModel.operationError.observe(viewLifecycleOwner, errorObserver)
+
+        val mAdapter = MoviesRecyclerViewAdapter(
+            favouriteClickListener = {
+                viewModel.setFavourite(it)
+            }
+        )
+        mAdapter.setHasStableIds(true)
+
+
+        recycler_view.apply {
+            setHasFixedSize(true)
+            adapter = mAdapter
+            scrollBottomReachedListener{
+                viewModel.loadMoreMovies()
+            }
+        }
+
+        viewModel.moviesLiveData.observe(viewLifecycleOwner, Observer {
+            empty_layout.hide()
+            mAdapter.updateList(it)
+        })
+
+        empty_layout.refresh.setOnClickListener {
+            viewModel.loadMovies()
+        }
+    }
+
+    // toggle visibility of progress spinner while async operations are taking place
+    private val stateObserver = Observer<Event<Boolean>> {
+        when(it.getContentIfNotHandled()){
+            true -> {
+                progress_circular.show()
+            }
+            false -> {
+                progress_circular.hide()
+            }
+        }
+    }
+
+
+    private val errorObserver = Observer<Event<String>> {
+        it.getContentIfNotHandled()?.let { message ->
+            requireContext().displayToast(message)
+        }
+    }
+}

app/src/main/java/com/example/h_mal/movielisttest/ui/main/MainViewModel.kt

@@ -0,0 +1,87 @@
+package com.example.h_mal.movielisttest.ui.main
+
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.Observer
+import androidx.lifecycle.ViewModel
+import com.example.h_mal.movielisttest.data.models.Movie
+import com.example.h_mal.movielisttest.data.repository.Repository
+import com.example.h_mal.movielisttest.data.room.MovieEntity
+import com.example.h_mal.movielisttest.utils.Event
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import java.io.IOException
+
+class MainViewModel(
+    private val repository: Repository
+) : ViewModel() {
+
+    val moviesLiveData = MutableLiveData<List<Movie>>()
+
+    val operationState = MutableLiveData<Event<Boolean>>()
+    val operationError = MutableLiveData<Event<String>>()
+
+    init {
+        val observer = Observer<List<MovieEntity>> {
+            val list = it.map {entity -> Movie(entity) }
+            moviesLiveData.postValue(list)
+        }
+        repository.getMoviesFromDatabase().observeForever (observer)
+
+        loadMovies()
+    }
+
+    fun loadMovies(){
+        CoroutineScope(Dispatchers.IO).launch {
+            operationState.postValue(Event(true))
+            try {
+                val response = repository.getMoviesFromApi(1)
+                // null check response exists and contains list of users
+                response?.results?.let {
+                    // save users to database
+                    repository.saveMoviesToDatabase(it)
+                }
+            }catch (e: IOException){
+                operationError.postValue(Event(e.message!!))
+            }finally {
+                operationState.postValue(Event(false))
+            }
+        }
+    }
+
+    fun loadMoreMovies(){
+        CoroutineScope(Dispatchers.IO).launch {
+            operationState.postValue(Event(true))
+            try {
+                val page = repository.getCurrentPage()
+
+                val response = repository.getMoviesFromApi(page)
+                // null check response exists and contains list of users
+                response?.results?.let {
+                    // save users to database
+                    repository.saveMoviesToDatabase(it)
+                    // update current page
+                    repository.updateCurrentPage()
+                }
+            }catch (e: IOException){
+                operationError.postValue(Event(e.message!!))
+            }finally {
+                operationState.postValue(Event(false))
+            }
+        }
+    }
+
+    fun setFavourite(id: Int){
+        CoroutineScope(Dispatchers.IO).launch {
+            operationState.postValue(Event(true))
+            try {
+                // Set favourite
+                repository.setFavourite(id)
+            }catch (e: IOException){
+                operationError.postValue(Event(e.message!!))
+            }finally {
+                operationState.postValue(Event(false))
+            }
+        }
+    }
+}

app/src/main/java/com/example/h_mal/movielisttest/ui/main/MainViewModelFactory.kt

@@ -0,0 +1,22 @@
+package com.example.h_mal.movielisttest.ui.main
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.ViewModelProvider
+import com.example.h_mal.movielisttest.data.repository.Repository
+
+/**
+ * Viewmodel factory for [MainViewModel]
+ * @repository injected into MainViewModel
+ */
+class MainViewModelFactory(
+    private val repository: Repository
+) : ViewModelProvider.Factory{
+
+    @Suppress("UNCHECKED_CAST")
+    override fun <T : ViewModel> create(modelClass: Class<T>): T {
+        if (modelClass.isAssignableFrom(MainViewModel::class.java)) {
+            return (MainViewModel(repository)) as T
+        }
+        throw IllegalArgumentException("Unknown ViewModel class")
+    }
+}

app/src/main/java/com/example/h_mal/movielisttest/ui/main/MoviesRecyclerViewAdapter.kt

@@ -0,0 +1,82 @@
+package com.example.h_mal.movielisttest.ui.main
+
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.ImageView
+import android.widget.TextView
+import androidx.recyclerview.widget.RecyclerView
+import com.example.h_mal.movielisttest.R
+import com.example.h_mal.movielisttest.data.models.Movie
+import com.example.h_mal.movielisttest.utils.loadImage
+import com.squareup.picasso.Picasso
+import kotlinx.android.synthetic.main.item_layout.view.*
+
+/**
+ * Recycler view adapter to bind movies to a recycler view with
+ */
+class MoviesRecyclerViewAdapter(
+    val favouriteClickListener: (Int) -> Unit
+) : RecyclerView.Adapter<RecyclerView.ViewHolder>() {
+
+    var list = mutableListOf<Movie>()
+
+    fun updateList(movies: List<Movie>) {
+        list.clear()
+        list.addAll(movies)
+        notifyDataSetChanged()
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
+        val itemTwo =
+            LayoutInflater.from(parent.context).inflate(R.layout.item_layout, parent, false)
+        return ItemOne(itemTwo)
+    }
+
+    override fun getItemCount(): Int {
+        return list.size
+    }
+
+    override fun getItemId(position: Int): Long {
+        list[position].id?.let {
+            return it.toLong()
+        }
+        return super.getItemId(position)
+    }
+
+    override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
+        if (holder is ItemOne) {
+            holder.populateMovie(list[position])
+            holder.favourite.setOnClickListener {
+                list[position].id?.let { id -> favouriteClickListener(id) }
+            }
+        }
+    }
+
+    internal inner class ItemOne(itemView: View) : RecyclerView.ViewHolder(itemView) {
+        val title: TextView = itemView.title_tv
+        val description: TextView = itemView.desc_tv
+        val dateTv: TextView = itemView.date_tv
+        val favourite: ImageView = itemView.fav_btn
+        val cellImageView: ImageView = itemView.movie_iv
+        val voteTextView: TextView = itemView.vote_average_tv
+
+        fun populateMovie(movie: Movie) {
+            title.text = movie.title
+            description.text = movie.overview
+            dateTv.text = movie.releaseDate
+            movie.favourites?.let { setFavourite(it) }
+            voteTextView.text = movie.voteAverage.toString()
+
+            cellImageView.loadImage(movie.posterPath)
+        }
+
+        private fun setFavourite(fav: Boolean) {
+            if (fav) {
+                favourite.setImageResource(android.R.drawable.btn_star_big_on)
+            } else {
+                favourite.setImageResource(android.R.drawable.btn_star_big_off)
+            }
+        }
+    }
+}

app/src/main/java/com/example/h_mal/movielisttest/utils/Event.kt

@@ -0,0 +1,24 @@
+package com.example.h_mal.movielisttest.utils
+
+/**
+ * Used with livedata<T> to make observation lifecycle aware
+ * Display livedata response only once
+ */
+open class Event<out T>(private val content: T) {
+
+    var hasBeenHandled = false
+        private set // Allow external read but not write
+
+    /**
+     * Returns the content and prevents its use again.
+     */
+    fun getContentIfNotHandled(): T? {
+        return if (hasBeenHandled) {
+            null
+        } else {
+            hasBeenHandled = true
+            content
+        }
+    }
+
+}

app/src/main/java/com/example/h_mal/movielisttest/utils/ViewUtils.kt

@@ -0,0 +1,41 @@
+package com.example.h_mal.movielisttest.utils
+
+import android.content.Context
+import android.view.View
+import android.widget.ImageView
+import android.widget.Toast
+import androidx.recyclerview.widget.RecyclerView
+import com.example.h_mal.movielisttest.R
+import com.squareup.picasso.Picasso
+
+fun View.show() {
+    this.visibility = View.VISIBLE
+}
+
+fun View.hide() {
+    this.visibility = View.GONE
+}
+
+fun Context.displayToast(message: String) {
+    Toast.makeText(this, message, Toast.LENGTH_LONG).show()
+}
+
+
+fun ImageView.loadImage(url: String?){
+    Picasso.get()
+        .load(url)
+        .fit()
+        .centerCrop()
+        .into(this)
+}
+
+fun RecyclerView.scrollBottomReachedListener(bottomReached: () -> Unit){
+    addOnScrollListener(object : RecyclerView.OnScrollListener() {
+        override fun onScrollStateChanged(recyclerView: RecyclerView, newState: Int) {
+            super.onScrollStateChanged(recyclerView, newState)
+            if (!recyclerView.canScrollVertically(1) && newState == RecyclerView.SCROLL_STATE_IDLE) {
+                bottomReached()
+            }
+        }
+    })
+}

app/src/main/res/drawable-v24/ic_launcher_foreground.xml

@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>

app/src/main/res/drawable/ic_launcher_background.xml

@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>

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

@@ -0,0 +1,44 @@
+<?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">
+
+
+    <LinearLayout
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:gravity="center"
+        android:orientation="vertical"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toTopOf="parent">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/oops"
+            android:textAppearance="?android:attr/textAppearanceLarge" />
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/no_movies_found" />
+    </LinearLayout>
+
+
+    <Button
+        android:id="@+id/refresh"
+        style="?android:attr/borderlessButtonStyle"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:background="@android:color/transparent"
+        android:text="@string/refresh"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.8" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -0,0 +1,112 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:minHeight="270dp">
+
+    <androidx.cardview.widget.CardView
+        android:id="@+id/card_view"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_margin="16dp"
+        app:cardBackgroundColor="@color/colorAccent"
+        app:cardCornerRadius="12dp">
+
+        <androidx.constraintlayout.widget.ConstraintLayout
+            android:layout_margin="12dp"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent">
+
+            <androidx.cardview.widget.CardView
+                android:id="@+id/image_container"
+                android:layout_width="120dp"
+                android:layout_height="180dp"
+                app:layout_constraintLeft_toLeftOf="parent"
+                app:layout_constraintRight_toRightOf="parent"
+                app:layout_constraintTop_toTopOf="parent"
+                app:cardCornerRadius="12dp">
+
+                <ImageView
+                    android:id="@+id/movie_iv"
+                    android:layout_width="match_parent"
+                    android:layout_height="match_parent"
+                    android:adjustViewBounds="true"
+                    android:scaleType="centerCrop"
+                    tools:src="@drawable/mad_max_sample" />
+            </androidx.cardview.widget.CardView>
+
+            <androidx.cardview.widget.CardView
+                android:layout_width="50dp"
+                android:layout_height="50dp"
+                app:cardCornerRadius="25dp"
+                app:layout_constraintTop_toTopOf="parent"
+                app:layout_constraintRight_toRightOf="parent"
+                app:cardElevation="0dp"
+                android:backgroundTint="@android:color/background_light">
+                <TextView
+                    android:id="@+id/vote_average_tv"
+                    android:layout_width="match_parent"
+                    android:layout_height="match_parent"
+                    android:textAppearance="?android:attr/textAppearanceLargePopupMenu"
+                    android:gravity="center"
+                    android:ellipsize="marquee"
+                    android:textStyle="bold"
+                    tools:text="4.5"/>
+            </androidx.cardview.widget.CardView>
+
+
+            <LinearLayout
+                android:id="@+id/info_container"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical"
+                android:layout_marginTop="12dp"
+                app:layout_constraintLeft_toLeftOf="parent"
+                app:layout_constraintRight_toRightOf="parent"
+                app:layout_constraintTop_toBottomOf="@id/image_container"
+                android:layout_gravity="center|left">
+
+                    <TextView
+                        android:id="@+id/title_tv"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        tools:text="Mad Max"
+                        android:singleLine="true"
+                        android:textAppearance="?android:attr/textAppearanceLargePopupMenu"
+                        android:ellipsize="marquee"
+                        android:textStyle="bold"/>
+                    <TextView
+                        android:id="@+id/desc_tv"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:textAppearance="?android:attr/textAppearanceSmall"
+                        tools:text="An apocalyptic story set in the furthest reaches of our planet, in a stark desert landscape where humanity is broken, and most everyone is crazed fighting for the necessities of life. Within this world exist two rebels on the run who just might be able to restore order." />
+            </LinearLayout>
+
+            <TextView
+                android:id="@+id/date_tv"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                tools:text="12/10/2020"
+                android:singleLine="true"
+                android:textAppearance="?android:attr/textAppearanceLargePopupMenu"
+                android:ellipsize="marquee"
+                android:layout_marginTop="12dp"
+                app:layout_constraintTop_toBottomOf="@id/info_container"
+                app:layout_constraintLeft_toLeftOf="parent"
+                android:textStyle="bold"/>
+
+            <ImageView
+                app:layout_constraintBottom_toBottomOf="@id/date_tv"
+                app:layout_constraintRight_toRightOf="parent"
+                android:src="@android:drawable/btn_star_big_off"
+                android:id="@+id/fav_btn"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content" />
+        </androidx.constraintlayout.widget.ConstraintLayout>
+
+    </androidx.cardview.widget.CardView>
+
+</FrameLayout>

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

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/container"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity" />

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

@@ -0,0 +1,41 @@
+<?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"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/main"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".ui.main.MainFragment">
+
+    <include
+        android:id="@+id/empty_layout"
+        layout="@layout/empty_view_item"/>
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/recycler_view"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
+        tools:visibility="gone"
+        tools:listitem="@layout/item_layout">
+
+    </androidx.recyclerview.widget.RecyclerView>
+
+    <ProgressBar
+        android:id="@+id/progress_circular"
+        android:visibility="gone"
+        tools:visibility="visible"
+        android:elevation="0.2dp"
+        android:layout_gravity="center"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"/>
+
+</androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <com.mikhaellopez.circularimageview.CircularImageView
+        android:id="@+id/profile_img"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent"
+        tools:src="@drawable/ic_launcher_background"
+        app:civ_border_width="0dp"
+        app:civ_shadow_radius="1dp"
+        android:layout_width="48dp"
+        android:layout_height="48dp"
+        android:layout_margin="12dp"/>
+
+    <LinearLayout
+        app:layout_constraintLeft_toRightOf="@id/profile_img"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent"
+        android:layout_width="0dp"
+        android:layout_marginLeft="12dp"
+        android:layout_marginRight="12dp"
+        android:layout_height="wrap_content"
+        android:orientation="vertical">
+
+        <TextView
+            android:id="@+id/text1"
+            android:textSize="16sp"
+            android:textStyle="bold"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"/>
+
+        <TextView android:id="@+id/text2"
+            android:textSize="16sp"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"/>
+    </LinearLayout>
+
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

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

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="colorPrimary">#6200EE</color>
+    <color name="colorPrimaryDark">#3700B3</color>
+    <color name="colorAccent">#03DAC5</color>
+</resources>

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

@@ -0,0 +1,6 @@
+<resources>
+    <string name="app_name">MovieListTest</string>
+    <string name="refresh">refresh</string>
+    <string name="no_movies_found">No Movies Found</string>
+    <string name="oops">Oops!</string>
+</resources>

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

@@ -0,0 +1,15 @@
+<resources>
+    <!-- Base application theme. -->
+    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
+        <!-- Customize your theme here. -->
+        <item name="colorPrimary">@color/colorPrimary</item>
+        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
+        <item name="colorAccent">@color/colorAccent</item>
+    </style>
+
+    <style name="cardview_theme" parent="CardView">
+        <item name="cardElevation">0dp</item>
+        <item name="cardCornerRadius">22dp</item>
+    </style>
+
+</resources>

app/src/test/java/com/example/h_mal/movielisttest/data/repository/RepositoryImplTest.kt

@@ -0,0 +1,73 @@
+package com.example.h_mal.movielisttest.data.repository
+
+import com.example.h_mal.movielisttest.data.network.MoviesApi
+import com.example.h_mal.movielisttest.data.network.response.MoviesResponse
+import com.example.h_mal.movielisttest.data.prefs.PreferenceProvider
+import com.example.h_mal.movielisttest.data.room.MoviesRoomDatabase
+import kotlinx.coroutines.runBlocking
+import okhttp3.ResponseBody
+import org.junit.Assert.*
+import org.junit.Before
+import org.junit.Test
+import org.mockito.Mock
+import org.mockito.Mockito
+import org.mockito.MockitoAnnotations
+import retrofit2.Response
+import java.io.IOException
+import kotlin.test.assertFailsWith
+
+class RepositoryTest {
+
+    lateinit var repository: Repository
+
+    @Mock
+    lateinit var api: MoviesApi
+    @Mock
+    lateinit var db: MoviesRoomDatabase
+    @Mock
+    lateinit var prefs: PreferenceProvider
+
+    @Before
+    fun setUp() {
+        MockitoAnnotations.initMocks(this)
+        repository = RepositoryImpl(api, db, prefs)
+    }
+
+    @Test
+    fun fetchUserFromApi_positiveResponse() = runBlocking {
+        // GIVEN
+        val input = 1
+        val mockApiResponse = Mockito.mock(MoviesResponse::class.java)
+        val mockResponse = Response.success(mockApiResponse)
+
+        // WHEN
+        Mockito.`when`(api.getFromApi(input)).thenReturn(
+            mockResponse
+        )
+
+        // THEN
+        val getUser = repository.getMoviesFromApi(input)
+        assertNotNull(getUser)
+        assertEquals(mockApiResponse, getUser)
+    }
+
+    @Test
+    fun fetchUserFromApi_negativeResponse() = runBlocking {
+        //GIVEN
+        //mock retrofit error response
+        val mockBody = Mockito.mock(ResponseBody::class.java)
+        val mockRaw = Mockito.mock(okhttp3.Response::class.java)
+        val re = Response.error<String>(mockBody, mockRaw)
+
+        //WHEN
+        Mockito.`when`(api.getFromApi(10)).then { re }
+
+        //THEN - assert exception is not null
+        val ioExceptionReturned = assertFailsWith<IOException> {
+            repository.getMoviesFromApi(10)
+        }
+        assertNotNull(ioExceptionReturned)
+        assertNotNull(ioExceptionReturned.message)
+    }
+
+}

app/src/test/java/com/example/h_mal/movielisttest/data/room/MoviesRoomDatabaseTest.kt

@@ -0,0 +1,2 @@
+package com.example.h_mal.movielisttest.data.room
+

app/src/test/java/com/example/h_mal/movielisttest/ui/main/MainViewModelTest.kt

@@ -0,0 +1,112 @@
+package com.example.h_mal.movielisttest.ui.main
+
+import androidx.arch.core.executor.testing.InstantTaskExecutorRule
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.Observer
+import androidx.test.espresso.idling.CountingIdlingResource
+import com.example.h_mal.movielisttest.application.MovieListApplication.Companion.idlingResources
+import com.example.h_mal.movielisttest.data.network.response.MoviesResponse
+import com.example.h_mal.movielisttest.data.repository.Repository
+import com.example.h_mal.movielisttest.data.room.MovieEntity
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.runBlocking
+import org.junit.Assert.*
+import org.junit.Before
+import org.junit.Rule
+import org.junit.Test
+import org.junit.rules.TestRule
+import org.mockito.Mock
+import org.mockito.Mockito
+import org.mockito.MockitoAnnotations
+import java.io.IOException
+import javax.annotation.meta.When
+
+class MainViewModelTest {
+
+    @get:Rule
+    var rule: TestRule = InstantTaskExecutorRule()
+
+    lateinit var viewModel: MainViewModel
+
+    @Mock
+    lateinit var repository: Repository
+
+    @Mock
+    lateinit var observer: Observer<List<MovieEntity>>
+
+    @Before
+    fun setUp() {
+        MockitoAnnotations.initMocks(this)
+
+        val mockLiveData = object: LiveData<List<MovieEntity>>(){}
+        Mockito.`when`(repository.getMoviesFromDatabase()).thenReturn(mockLiveData)
+
+        viewModel = MainViewModel(repository)
+    }
+
+    @Test
+    fun getApiFromRepository_SuccessfulReturn() = runBlocking{
+        //GIVEN
+        val mockApiResponse = Mockito.mock(MoviesResponse::class.java)
+
+        //WHEN
+        Mockito.`when`(repository.getMoviesFromApi(1)).thenReturn(mockApiResponse)
+
+        //THEN
+        viewModel.loadMovies()
+        delay(200)
+        viewModel.operationState.observeForever{
+            it.getContentIfNotHandled()?.let {result ->
+                kotlin.test.assertFalse { result }
+            }
+        }
+    }
+
+    @Test
+    fun getFromRepository_unsuccessfulReturn() = runBlocking{
+        // WHEN
+        Mockito.`when`(repository.getMoviesFromApi(1)).thenAnswer{ throw IOException("throwed") }
+
+        // THEN
+        viewModel.loadMovies()
+        viewModel.operationError.observeForever{
+            it.getContentIfNotHandled()?.let {result ->
+                assertEquals(result, "throwed")
+            }
+        }
+    }
+
+    @Test
+    fun getMoreFromRepository_SuccessfulReturn() = runBlocking{
+        //GIVEN
+        val mockApiResponse = Mockito.mock(MoviesResponse::class.java)
+
+        //WHEN
+        Mockito.`when`(repository.getMoviesFromApi(2)).thenReturn(mockApiResponse)
+        Mockito.`when`(repository.getCurrentPage()).thenReturn(2)
+
+        //THEN
+        viewModel.loadMovies()
+        delay(200)
+        viewModel.operationState.observeForever{
+            it.getContentIfNotHandled()?.let {result ->
+                kotlin.test.assertFalse { result }
+            }
+        }
+    }
+
+    @Test
+    fun getMoreFromRepository_unsuccessfulReturn() = runBlocking{
+        // WHEN
+        Mockito.`when`(repository.getMoviesFromApi(2)).thenAnswer{ throw IOException("throwed") }
+
+        // THEN
+        viewModel.loadMovies()
+        viewModel.operationError.observeForever{
+            it.getContentIfNotHandled()?.let {result ->
+                assertEquals(result, "throwed")
+            }
+        }
+    }
+}