initial commit

app/src/main/AndroidManifest.xml

@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    package="org.fnives.test.showcase">
+
+    <uses-permission android:name="android.permission.INTERNET" />
+
+    <application
+        android:allowBackup="false"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:name=".TestShowcaseApplication"
+        android:theme="@style/Theme.TestShowCase"
+        tools:ignore="AllowBackup">
+        <activity android:name=".ui.splash.SplashActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <activity android:name=".ui.home.MainActivity"/>
+        <activity android:name=".ui.auth.AuthActivity"/>
+    </application>
+
+</manifest>

app/src/main/java/org/fnives/test/showcase/TestShowcaseApplication.kt

@@ -0,0 +1,18 @@
+package org.fnives.test.showcase
+
+import android.app.Application
+import org.fnives.test.showcase.di.BaseUrlProvider
+import org.fnives.test.showcase.di.createAppModules
+import org.koin.android.ext.koin.androidContext
+import org.koin.core.context.startKoin
+
+class TestShowcaseApplication : Application() {
+
+    override fun onCreate() {
+        super.onCreate()
+        startKoin {
+            androidContext(this@TestShowcaseApplication)
+            modules(createAppModules(BaseUrlProvider.get()))
+        }
+    }
+}

app/src/main/java/org/fnives/test/showcase/di/BaseUrlProvider.kt

@@ -0,0 +1,9 @@
+package org.fnives.test.showcase.di
+
+import org.fnives.test.showcase.BuildConfig
+import org.fnives.test.showcase.model.network.BaseUrl
+
+object BaseUrlProvider {
+
+    fun get() = BaseUrl(BuildConfig.BASE_URL)
+}

app/src/main/java/org/fnives/test/showcase/di/createAppModules.kt

@@ -0,0 +1,55 @@
+package org.fnives.test.showcase.di
+
+import org.fnives.test.showcase.core.di.createCoreModule
+import org.fnives.test.showcase.model.network.BaseUrl
+import org.fnives.test.showcase.session.SessionExpirationListenerImpl
+import org.fnives.test.showcase.storage.LocalDatabase
+import org.fnives.test.showcase.storage.SharedPreferencesManagerImpl
+import org.fnives.test.showcase.storage.database.DatabaseInitialization
+import org.fnives.test.showcase.storage.favourite.FavouriteContentLocalStorageImpl
+import org.fnives.test.showcase.ui.auth.AuthViewModel
+import org.fnives.test.showcase.ui.home.MainViewModel
+import org.fnives.test.showcase.ui.splash.SplashViewModel
+import org.koin.android.ext.koin.androidContext
+import org.koin.androidx.viewmodel.dsl.viewModel
+import org.koin.core.module.Module
+import org.koin.dsl.module
+
+fun createAppModules(baseUrl: BaseUrl): List<Module> {
+    return createCoreModule(
+        baseUrl = baseUrl,
+        true,
+        userDataLocalStorageProvider = { get<SharedPreferencesManagerImpl>() },
+        sessionExpirationListenerProvider = { get<SessionExpirationListenerImpl>() },
+        favouriteContentLocalStorageProvider = { get<FavouriteContentLocalStorageImpl>() }
+    )
+        .plus(storageModule())
+        .plus(authModule())
+        .plus(appModule())
+        .plus(favouriteModule())
+        .plus(splashModule())
+        .toList()
+}
+
+fun storageModule() = module {
+    single { SharedPreferencesManagerImpl.create(androidContext()) }
+    single { DatabaseInitialization.create(androidContext()) }
+}
+
+fun authModule() = module {
+    viewModel { AuthViewModel(get()) }
+}
+
+fun appModule() = module {
+    single { SessionExpirationListenerImpl(androidContext()) }
+}
+
+fun splashModule() = module {
+    viewModel { SplashViewModel(get()) }
+}
+
+fun favouriteModule() = module {
+    single { get<LocalDatabase>().favouriteDao }
+    viewModel { MainViewModel(get(), get(), get(), get(), get()) }
+    single { FavouriteContentLocalStorageImpl(get()) }
+}

app/src/main/java/org/fnives/test/showcase/session/SessionExpirationListenerImpl.kt

@@ -0,0 +1,21 @@
+package org.fnives.test.showcase.session
+
+import android.content.Context
+import android.content.Intent
+import android.os.Handler
+import android.os.Looper
+import org.fnives.test.showcase.core.session.SessionExpirationListener
+import org.fnives.test.showcase.ui.auth.AuthActivity
+
+class SessionExpirationListenerImpl(private val context: Context) : SessionExpirationListener {
+
+    override fun onSessionExpired() {
+        Handler(Looper.getMainLooper()).post {
+            context.startActivity(
+                AuthActivity.getStartIntent(context)
+                    .addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK)
+                    .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
+            )
+        }
+    }
+}

app/src/main/java/org/fnives/test/showcase/storage/LocalDatabase.kt

@@ -0,0 +1,12 @@
+package org.fnives.test.showcase.storage
+
+import androidx.room.Database
+import androidx.room.RoomDatabase
+import org.fnives.test.showcase.storage.favourite.FavouriteDao
+import org.fnives.test.showcase.storage.favourite.FavouriteEntity
+
+@Database(entities = [FavouriteEntity::class], version = 1, exportSchema = false)
+abstract class LocalDatabase : RoomDatabase() {
+
+    abstract val favouriteDao: FavouriteDao
+}

app/src/main/java/org/fnives/test/showcase/storage/SharedPreferencesManagerImpl.kt

@@ -0,0 +1,58 @@
+package org.fnives.test.showcase.storage
+
+import android.content.Context
+import android.content.SharedPreferences
+import org.fnives.test.showcase.core.storage.UserDataLocalStorage
+import org.fnives.test.showcase.model.session.Session
+import kotlin.properties.ReadWriteProperty
+import kotlin.reflect.KProperty
+
+class SharedPreferencesManagerImpl(private val sharedPreferences: SharedPreferences) : UserDataLocalStorage {
+
+    override var session: Session? by SessionDelegate(SESSION_KEY)
+
+    private class SessionDelegate(private val key: String) : ReadWriteProperty<SharedPreferencesManagerImpl, Session?> {
+
+        override fun setValue(thisRef: SharedPreferencesManagerImpl, property: KProperty<*>, value: Session?) {
+            if (value == null) {
+                thisRef.sharedPreferences.edit().remove(key).apply()
+            } else {
+                val values = setOf(
+                    ACCESS_TOKEN_KEY + value.accessToken,
+                    REFRESH_TOKEN_KEY + value.refreshToken
+                )
+                thisRef.sharedPreferences.edit().putStringSet(key, values).apply()
+            }
+        }
+
+        override fun getValue(thisRef: SharedPreferencesManagerImpl, property: KProperty<*>): Session? {
+            val values = thisRef.sharedPreferences.getStringSet(key, null)?.toList()
+            val accessToken = values?.firstOrNull { it.startsWith(ACCESS_TOKEN_KEY) }
+                ?.drop(ACCESS_TOKEN_KEY.length) ?: return null
+            val refreshToken = values.firstOrNull { it.startsWith(REFRESH_TOKEN_KEY) }
+                ?.drop(REFRESH_TOKEN_KEY.length) ?: return null
+
+            return Session(accessToken = accessToken, refreshToken = refreshToken)
+        }
+
+        companion object {
+            private const val ACCESS_TOKEN_KEY = "ACCESS_TOKEN_KEY"
+            private const val REFRESH_TOKEN_KEY = "REFRESH_TOKEN_KEY"
+        }
+    }
+
+    companion object {
+
+        private const val SESSION_KEY = "SESSION_KEY"
+        private const val SESSION_SHARED_PREFERENCES_NAME = "SESSION_SHARED_PREFERENCES_NAME"
+
+        fun create(context: Context): SharedPreferencesManagerImpl {
+            val sharedPreferences = context.getSharedPreferences(
+                SESSION_SHARED_PREFERENCES_NAME,
+                Context.MODE_PRIVATE
+            )
+
+            return SharedPreferencesManagerImpl(sharedPreferences)
+        }
+    }
+}

app/src/main/java/org/fnives/test/showcase/storage/database/DatabaseInitialization.kt

@@ -0,0 +1,13 @@
+package org.fnives.test.showcase.storage.database
+
+import android.content.Context
+import androidx.room.Room
+import org.fnives.test.showcase.storage.LocalDatabase
+
+object DatabaseInitialization {
+
+    fun create(context: Context): LocalDatabase =
+        Room.databaseBuilder(context, LocalDatabase::class.java, "local_database")
+            .allowMainThreadQueries()
+            .build()
+}

app/src/main/java/org/fnives/test/showcase/storage/favourite/FavouriteContentLocalStorageImpl.kt

@@ -0,0 +1,19 @@
+package org.fnives.test.showcase.storage.favourite
+
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.map
+import org.fnives.test.showcase.core.storage.content.FavouriteContentLocalStorage
+import org.fnives.test.showcase.model.content.ContentId
+
+class FavouriteContentLocalStorageImpl(private val favouriteDao: FavouriteDao) : FavouriteContentLocalStorage {
+    override fun observeFavourites(): Flow<List<ContentId>> =
+        favouriteDao.get().map { it.map(FavouriteEntity::contentId).map(::ContentId) }
+
+    override suspend fun markAsFavourite(contentId: ContentId) {
+        favouriteDao.addFavourite(FavouriteEntity(contentId.id))
+    }
+
+    override suspend fun deleteAsFavourite(contentId: ContentId) {
+        favouriteDao.deleteFavourite(FavouriteEntity(contentId.id))
+    }
+}

app/src/main/java/org/fnives/test/showcase/storage/favourite/FavouriteDao.kt

@@ -0,0 +1,21 @@
+package org.fnives.test.showcase.storage.favourite
+
+import androidx.room.Dao
+import androidx.room.Delete
+import androidx.room.Insert
+import androidx.room.OnConflictStrategy
+import androidx.room.Query
+import kotlinx.coroutines.flow.Flow
+
+@Dao
+interface FavouriteDao {
+
+    @Query("SELECT * FROM FavouriteEntity")
+    fun get(): Flow<List<FavouriteEntity>>
+
+    @Insert(onConflict = OnConflictStrategy.IGNORE)
+    suspend fun addFavourite(favouriteEntity: FavouriteEntity)
+
+    @Delete
+    suspend fun deleteFavourite(favouriteEntity: FavouriteEntity)
+}

app/src/main/java/org/fnives/test/showcase/storage/favourite/FavouriteEntity.kt

@@ -0,0 +1,7 @@
+package org.fnives.test.showcase.storage.favourite
+
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+
+@Entity
+data class FavouriteEntity(@PrimaryKey val contentId: String)

app/src/main/java/org/fnives/test/showcase/ui/auth/AuthActivity.kt

@@ -0,0 +1,55 @@
+package org.fnives.test.showcase.ui.auth
+
+import android.content.Context
+import android.content.Intent
+import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+import androidx.core.view.isVisible
+import androidx.core.widget.doAfterTextChanged
+import com.google.android.material.snackbar.Snackbar
+import org.fnives.test.showcase.R
+import org.fnives.test.showcase.databinding.ActivityAuthenticationBinding
+import org.fnives.test.showcase.ui.home.MainActivity
+import org.koin.androidx.viewmodel.ext.android.viewModel
+
+class AuthActivity : AppCompatActivity() {
+
+    private val viewModel by viewModel<AuthViewModel>()
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        val binding = ActivityAuthenticationBinding.inflate(layoutInflater)
+        viewModel.loading.observe(this) {
+            binding.loadingIndicator.isVisible = it == true
+        }
+        viewModel.password.observe(this, SetTextIfNotSameObserver(binding.passwordEditText))
+        binding.passwordEditText.doAfterTextChanged { viewModel.onPasswordChanged(it?.toString().orEmpty()) }
+        viewModel.username.observe(this, SetTextIfNotSameObserver(binding.userEditText))
+        binding.userEditText.doAfterTextChanged { viewModel.onUsernameChanged(it?.toString().orEmpty()) }
+        binding.loginCta.setOnClickListener {
+            viewModel.onLogin()
+        }
+        viewModel.error.observe(this) {
+            val stringResId = it?.consume()?.stringResId() ?: return@observe
+            Snackbar.make(binding.snackbarHolder, stringResId, Snackbar.LENGTH_LONG).show()
+        }
+        viewModel.navigateToHome.observe(this) {
+            it.consume() ?: return@observe
+            startActivity(MainActivity.getStartIntent(this))
+            finishAffinity()
+        }
+        setContentView(binding.root)
+    }
+
+    companion object {
+
+        private fun AuthViewModel.ErrorType.stringResId() = when (this) {
+            AuthViewModel.ErrorType.INVALID_CREDENTIALS -> R.string.credentials_invalid
+            AuthViewModel.ErrorType.GENERAL_NETWORK_ERROR -> R.string.something_went_wrong
+            AuthViewModel.ErrorType.UNSUPPORTED_USERNAME -> R.string.username_is_invalid
+            AuthViewModel.ErrorType.UNSUPPORTED_PASSWORD -> R.string.password_is_invalid
+        }
+
+        fun getStartIntent(context: Context): Intent = Intent(context, AuthActivity::class.java)
+    }
+}

app/src/main/java/org/fnives/test/showcase/ui/auth/AuthViewModel.kt

@@ -0,0 +1,66 @@
+package org.fnives.test.showcase.ui.auth
+
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import kotlinx.coroutines.launch
+import org.fnives.test.showcase.core.login.LoginUseCase
+import org.fnives.test.showcase.model.auth.LoginCredentials
+import org.fnives.test.showcase.model.auth.LoginStatus
+import org.fnives.test.showcase.model.shared.Answer
+import org.fnives.test.showcase.ui.shared.Event
+
+class AuthViewModel(private val loginUseCase: LoginUseCase) : ViewModel() {
+
+    private val _username = MutableLiveData<String>()
+    val username: LiveData<String> = _username
+    private val _password = MutableLiveData<String>()
+    val password: LiveData<String> = _password
+    private val _loading = MutableLiveData<Boolean>(false)
+    val loading: LiveData<Boolean> = _loading
+    private val _error = MutableLiveData<Event<ErrorType>>()
+    val error: LiveData<Event<ErrorType>> = _error
+    private val _navigateToHome = MutableLiveData<Event<Unit>>()
+    val navigateToHome: LiveData<Event<Unit>> = _navigateToHome
+
+    fun onPasswordChanged(password: String) {
+        _password.value = password
+    }
+
+    fun onUsernameChanged(username: String) {
+        _username.value = username
+    }
+
+    fun onLogin() {
+        if (_loading.value == true) return
+        _loading.value = true
+        viewModelScope.launch {
+            val credentials = LoginCredentials(
+                username = _username.value.orEmpty(),
+                password = _password.value.orEmpty()
+            )
+            when (val response = loginUseCase.invoke(credentials)) {
+                is Answer.Error -> _error.value = Event(ErrorType.GENERAL_NETWORK_ERROR)
+                is Answer.Success -> processLoginStatus(response.data)
+            }
+            _loading.postValue(false)
+        }
+    }
+
+    private fun processLoginStatus(loginStatus: LoginStatus) {
+        when (loginStatus) {
+            LoginStatus.SUCCESS -> _navigateToHome.value = Event(Unit)
+            LoginStatus.INVALID_CREDENTIALS -> _error.value = Event(ErrorType.INVALID_CREDENTIALS)
+            LoginStatus.INVALID_USERNAME -> _error.value = Event(ErrorType.UNSUPPORTED_USERNAME)
+            LoginStatus.INVALID_PASSWORD -> _error.value = Event(ErrorType.UNSUPPORTED_PASSWORD)
+        }
+    }
+
+    enum class ErrorType {
+        INVALID_CREDENTIALS,
+        GENERAL_NETWORK_ERROR,
+        UNSUPPORTED_USERNAME,
+        UNSUPPORTED_PASSWORD
+    }
+}

app/src/main/java/org/fnives/test/showcase/ui/auth/SetTextIfNotSameObserver.kt

@@ -0,0 +1,13 @@
+package org.fnives.test.showcase.ui.auth
+
+import android.widget.EditText
+import androidx.lifecycle.Observer
+
+class SetTextIfNotSameObserver(private val editText: EditText) : Observer<String> {
+    override fun onChanged(t: String?) {
+        val current = editText.text?.toString()
+        if (current != t) {
+            editText.setText(t)
+        }
+    }
+}

app/src/main/java/org/fnives/test/showcase/ui/home/FavouriteContentAdapter.kt

@@ -0,0 +1,51 @@
+package org.fnives.test.showcase.ui.home
+
+import android.view.ViewGroup
+import androidx.recyclerview.widget.DiffUtil
+import androidx.recyclerview.widget.ListAdapter
+import org.fnives.test.showcase.R
+import org.fnives.test.showcase.databinding.ItemFavouriteContentBinding
+import org.fnives.test.showcase.model.content.ContentId
+import org.fnives.test.showcase.model.content.FavouriteContent
+import org.fnives.test.showcase.ui.shared.ViewBindingAdapter
+import org.fnives.test.showcase.ui.shared.layoutInflater
+import org.fnives.test.showcase.ui.shared.loadRoundedImage
+
+class FavouriteContentAdapter(
+    private val listener: OnFavouriteItemClicked,
+) : ListAdapter<FavouriteContent, ViewBindingAdapter<ItemFavouriteContentBinding>>(
+    DiffUtilItemCallback()
+) {
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewBindingAdapter<ItemFavouriteContentBinding> =
+        ViewBindingAdapter(ItemFavouriteContentBinding.inflate(parent.layoutInflater(), parent, false)).apply {
+            viewBinding.favouriteCta.setOnClickListener {
+                if (adapterPosition in 0 until itemCount) {
+                    listener.onFavouriteToggleClicked(getItem(adapterPosition).content.id)
+                }
+            }
+        }
+
+    override fun onBindViewHolder(holder: ViewBindingAdapter<ItemFavouriteContentBinding>, position: Int) {
+        val item = getItem(position)
+        holder.viewBinding.img.loadRoundedImage(item.content.imageUrl)
+        holder.viewBinding.title.text = item.content.title
+        holder.viewBinding.description.text = item.content.description
+        val favouriteResId = if (item.isFavourite) R.drawable.favorite_24 else R.drawable.favorite_border_24
+        holder.viewBinding.favouriteCta.setImageResource(favouriteResId)
+    }
+
+    interface OnFavouriteItemClicked {
+        fun onFavouriteToggleClicked(contentId: ContentId)
+    }
+
+    class DiffUtilItemCallback : DiffUtil.ItemCallback<FavouriteContent>() {
+        override fun areItemsTheSame(oldItem: FavouriteContent, newItem: FavouriteContent): Boolean =
+            oldItem.content.id == newItem.content.id
+
+        override fun areContentsTheSame(oldItem: FavouriteContent, newItem: FavouriteContent): Boolean =
+            oldItem == newItem
+
+        override fun getChangePayload(oldItem: FavouriteContent, newItem: FavouriteContent): Any? = oldItem
+    }
+}

app/src/main/java/org/fnives/test/showcase/ui/home/MainActivity.kt

@@ -0,0 +1,68 @@
+package org.fnives.test.showcase.ui.home
+
+import android.content.Context
+import android.content.Intent
+import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+import androidx.core.view.isVisible
+import androidx.recyclerview.widget.LinearLayoutManager
+import org.fnives.test.showcase.R
+import org.fnives.test.showcase.databinding.ActivityMainBinding
+import org.fnives.test.showcase.model.content.ContentId
+import org.fnives.test.showcase.ui.auth.AuthActivity
+import org.fnives.test.showcase.ui.shared.VerticalSpaceItemDecoration
+import org.fnives.test.showcase.ui.shared.getThemePrimaryColor
+import org.koin.androidx.viewmodel.ext.android.viewModel
+
+class MainActivity : AppCompatActivity() {
+
+    private val viewModel by viewModel<MainViewModel>()
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        val binding = ActivityMainBinding.inflate(layoutInflater)
+        binding.toolbar.menu?.findItem(R.id.logout_cta)?.setOnMenuItemClickListener {
+            viewModel.onLogout()
+            true
+        }
+        binding.swipeRefreshLayout.setColorSchemeColors(binding.swipeRefreshLayout.getThemePrimaryColor())
+        binding.swipeRefreshLayout.setOnRefreshListener {
+            viewModel.onRefresh()
+        }
+
+        val adapter = FavouriteContentAdapter(viewModel.mapToAdapterListener())
+        binding.recycler.layoutManager = LinearLayoutManager(this)
+        binding.recycler.addItemDecoration(VerticalSpaceItemDecoration(resources.getDimensionPixelOffset(R.dimen.padding)))
+        binding.recycler.adapter = adapter
+
+        viewModel.content.observe(this) {
+            adapter.submitList(it.orEmpty())
+        }
+        viewModel.errorMessage.observe(this) {
+            binding.errorMessage.isVisible = it == true
+        }
+        viewModel.navigateToAuth.observe(this) {
+            it.consume() ?: return@observe
+            startActivity(AuthActivity.getStartIntent(this))
+            finishAffinity()
+        }
+        viewModel.loading.observe(this) {
+            if (binding.swipeRefreshLayout.isRefreshing != it) {
+                binding.swipeRefreshLayout.isRefreshing = it == true
+            }
+        }
+
+        setContentView(binding.root)
+    }
+
+    companion object {
+        fun getStartIntent(context: Context): Intent = Intent(context, MainActivity::class.java)
+
+        private fun MainViewModel.mapToAdapterListener(): FavouriteContentAdapter.OnFavouriteItemClicked =
+            object : FavouriteContentAdapter.OnFavouriteItemClicked {
+                override fun onFavouriteToggleClicked(contentId: ContentId) {
+                    this@mapToAdapterListener.onFavouriteToggleClicked(contentId)
+                }
+            }
+    }
+}

app/src/main/java/org/fnives/test/showcase/ui/home/MainViewModel.kt

@@ -0,0 +1,81 @@
+package org.fnives.test.showcase.ui.home
+
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.liveData
+import androidx.lifecycle.viewModelScope
+import kotlinx.coroutines.flow.collect
+import kotlinx.coroutines.launch
+import org.fnives.test.showcase.core.content.AddContentToFavouriteUseCase
+import org.fnives.test.showcase.core.content.FetchContentUseCase
+import org.fnives.test.showcase.core.content.GetAllContentUseCase
+import org.fnives.test.showcase.core.content.RemoveContentFromFavouritesUseCase
+import org.fnives.test.showcase.core.login.LogoutUseCase
+import org.fnives.test.showcase.model.content.ContentId
+import org.fnives.test.showcase.model.content.FavouriteContent
+import org.fnives.test.showcase.model.shared.Resource
+import org.fnives.test.showcase.ui.shared.Event
+
+class MainViewModel(
+    private val getAllContentUseCase: GetAllContentUseCase,
+    private val logoutUseCase: LogoutUseCase,
+    private val fetchContentUseCase: FetchContentUseCase,
+    private val addContentToFavouriteUseCase: AddContentToFavouriteUseCase,
+    private val removeContentFromFavouritesUseCase: RemoveContentFromFavouritesUseCase
+) : ViewModel() {
+
+    private val _loading = MutableLiveData<Boolean>()
+    val loading: LiveData<Boolean> = _loading
+    private val _content: LiveData<List<FavouriteContent>> = liveData {
+        getAllContentUseCase.get().collect {
+            when (it) {
+                is Resource.Error -> {
+                    _errorMessage.value = true
+                    _loading.value = false
+                    emit(emptyList<FavouriteContent>())
+                }
+                is Resource.Loading -> {
+                    _errorMessage.value = false
+                    _loading.value = true
+                }
+                is Resource.Success -> {
+                    _errorMessage.value = false
+                    _loading.value = false
+                    emit(it.data)
+                }
+            }
+        }
+    }
+    val content: LiveData<List<FavouriteContent>> = _content
+    private val _errorMessage = MutableLiveData<Boolean>(false)
+    val errorMessage: LiveData<Boolean> = _errorMessage
+    private val _navigateToAuth = MutableLiveData<Event<Unit>>()
+    val navigateToAuth: LiveData<Event<Unit>> = _navigateToAuth
+
+    fun onLogout() {
+        viewModelScope.launch {
+            logoutUseCase.invoke()
+            _navigateToAuth.value = Event(Unit)
+        }
+    }
+
+    fun onRefresh() {
+        if (_loading.value == true) return
+        _loading.value = true
+        viewModelScope.launch {
+            fetchContentUseCase.invoke()
+        }
+    }
+
+    fun onFavouriteToggleClicked(contentId: ContentId) {
+        viewModelScope.launch {
+            val content = _content.value?.firstOrNull { it.content.id == contentId } ?: return@launch
+            if (content.isFavourite) {
+                removeContentFromFavouritesUseCase.invoke(contentId)
+            } else {
+                addContentToFavouriteUseCase.invoke(contentId)
+            }
+        }
+    }
+}

app/src/main/java/org/fnives/test/showcase/ui/shared/Event.kt

@@ -0,0 +1,11 @@
+package org.fnives.test.showcase.ui.shared
+
+@Suppress("DataClassContainsFunctions")
+data class Event<T : Any>(private val data: T) {
+
+    private var consumed: Boolean = false
+
+    fun consume(): T? = data.takeUnless { consumed }?.also { consumed = true }
+
+    fun peek() = data
+}

app/src/main/java/org/fnives/test/showcase/ui/shared/VerticalSpaceItemDecoration.kt

@@ -0,0 +1,13 @@
+package org.fnives.test.showcase.ui.shared
+
+import android.graphics.Rect
+import android.view.View
+import androidx.recyclerview.widget.RecyclerView
+import androidx.recyclerview.widget.RecyclerView.ItemDecoration
+
+class VerticalSpaceItemDecoration(private val verticalSpaceHeight: Int) : ItemDecoration() {
+
+    override fun getItemOffsets(outRect: Rect, view: View, parent: RecyclerView, state: RecyclerView.State) {
+        outRect.set(0, 0, 0, verticalSpaceHeight)
+    }
+}

app/src/main/java/org/fnives/test/showcase/ui/shared/ViewBindingAdapter.kt

@@ -0,0 +1,6 @@
+package org.fnives.test.showcase.ui.shared
+
+import androidx.recyclerview.widget.RecyclerView
+import androidx.viewbinding.ViewBinding
+
+class ViewBindingAdapter<T : ViewBinding>(val viewBinding: T) : RecyclerView.ViewHolder(viewBinding.root)

app/src/main/java/org/fnives/test/showcase/ui/shared/ViewExtension.kt

@@ -0,0 +1,24 @@
+package org.fnives.test.showcase.ui.shared
+
+import android.util.TypedValue
+import android.view.LayoutInflater
+import android.view.View
+import android.widget.ImageView
+import coil.load
+import coil.transform.RoundedCornersTransformation
+import org.fnives.test.showcase.R
+import org.fnives.test.showcase.model.content.ImageUrl
+
+fun View.layoutInflater(): LayoutInflater = LayoutInflater.from(context)
+
+fun ImageView.loadRoundedImage(imageUrl: ImageUrl) {
+    load(imageUrl.url) {
+        transformations(RoundedCornersTransformation(resources.getDimension(R.dimen.rounded_corner)))
+    }
+}
+
+fun View.getThemePrimaryColor(): Int {
+    val value = TypedValue()
+    context.theme.resolveAttribute(R.attr.colorPrimary, value, true)
+    return value.data
+}

app/src/main/java/org/fnives/test/showcase/ui/splash/SplashActivity.kt

@@ -0,0 +1,27 @@
+package org.fnives.test.showcase.ui.splash
+
+import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+import org.fnives.test.showcase.R
+import org.fnives.test.showcase.ui.auth.AuthActivity
+import org.fnives.test.showcase.ui.home.MainActivity
+import org.koin.androidx.viewmodel.ext.android.viewModel
+
+class SplashActivity : AppCompatActivity() {
+
+    private val viewModel by viewModel<SplashViewModel>()
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_splash)
+        viewModel.navigateTo.observe(this) {
+            val intent = when (it.consume()) {
+                SplashViewModel.NavigateTo.HOME -> MainActivity.getStartIntent(this)
+                SplashViewModel.NavigateTo.AUTHENTICATION -> AuthActivity.getStartIntent(this)
+                null -> return@observe
+            }
+            startActivity(intent)
+            finishAffinity()
+        }
+    }
+}

app/src/main/java/org/fnives/test/showcase/ui/splash/SplashViewModel.kt

@@ -0,0 +1,28 @@
+package org.fnives.test.showcase.ui.splash
+
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.launch
+import org.fnives.test.showcase.core.login.IsUserLoggedInUseCase
+import org.fnives.test.showcase.ui.shared.Event
+
+class SplashViewModel(isUserLoggedInUseCase: IsUserLoggedInUseCase) : ViewModel() {
+
+    private val _navigateTo = MutableLiveData<Event<NavigateTo>>()
+    val navigateTo: LiveData<Event<NavigateTo>> = _navigateTo
+
+    init {
+        viewModelScope.launch {
+            delay(500L)
+            val navigationEvent = if (isUserLoggedInUseCase.invoke()) NavigateTo.HOME else NavigateTo.AUTHENTICATION
+            _navigateTo.value = Event(navigationEvent)
+        }
+    }
+
+    enum class NavigateTo {
+        HOME, AUTHENTICATION
+    }
+}

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

@@ -0,0 +1,31 @@
+<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:startY="49.59793"
+                android:startX="42.9492"
+                android:endY="92.4963"
+                android:endX="85.84757"
+                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: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:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000"/>
+</vector>

app/src/main/res/drawable/favorite_24.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="?attr/colorPrimary">
+  <path
+      android:fillColor="@android:color/white"
+      android:pathData="M12,21.35l-1.45,-1.32C5.4,15.36 2,12.28 2,8.5 2,5.42 4.42,3 7.5,3c1.74,0 3.41,0.81 4.5,2.09C13.09,3.81 14.76,3 16.5,3 19.58,3 22,5.42 22,8.5c0,3.78 -3.4,6.86 -8.55,11.54L12,21.35z"/>
+</vector>

app/src/main/res/drawable/favorite_border_24.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="?attr/colorPrimary">
+  <path
+      android:fillColor="@android:color/white"
+      android:pathData="M16.5,3c-1.74,0 -3.41,0.81 -4.5,2.09C10.91,3.81 9.24,3 7.5,3 4.42,3 2,5.42 2,8.5c0,3.78 3.4,6.86 8.55,11.54L12,21.35l1.45,-1.32C18.6,15.36 22,12.28 22,8.5 22,5.42 19.58,3 16.5,3zM12.1,18.55l-0.1,0.1 -0.1,-0.1C7.14,14.24 4,11.39 4,8.5 4,6.5 5.5,5 7.5,5c1.54,0 3.04,0.99 3.57,2.36h1.87C13.46,5.99 14.96,5 16.5,5c2,0 3.5,1.5 3.5,3.5 0,2.89 -3.14,5.74 -7.9,10.05z"/>
+</vector>

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

@@ -0,0 +1,10 @@
+<?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="@color/purple_700"
+        android:pathData="M0,0h108v108h-108z" />
+</vector>

app/src/main/res/drawable/logout_24.xml

@@ -0,0 +1,11 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="?attr/colorOnSurface"
+    android:autoMirrored="true">
+  <path
+      android:fillColor="@color/white"
+      android:pathData="M17,7l-1.41,1.41L18.17,11H8v2h10.17l-2.58,2.58L17,17l5,-5zM4,5h8V3H4c-1.1,0 -2,0.9 -2,2v14c0,1.1 0.9,2 2,2h8v-2H4V5z"/>
+</vector>

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

@@ -0,0 +1,98 @@
+<?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.appcompat.widget.Toolbar
+        android:id="@+id/toolbar"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:background="?attr/colorSurface"
+        android:minHeight="?attr/actionBarSize"
+        android:elevation="@dimen/toolbar_elevation"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:title="@string/login_title" />
+
+    <com.google.android.material.textfield.TextInputLayout
+        android:id="@+id/user_input"
+        style="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="@dimen/activity_horizontal_margin"
+        android:layout_marginEnd="@dimen/activity_horizontal_margin"
+        android:hint="@string/username"
+        app:layout_constraintBottom_toTopOf="@id/password_input"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/toolbar"
+        app:layout_constraintVertical_bias="0.2"
+        app:layout_constraintVertical_chainStyle="packed">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/user_edit_text"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:inputType="text"
+            android:lines="1" />
+    </com.google.android.material.textfield.TextInputLayout>
+
+    <com.google.android.material.textfield.TextInputLayout
+        android:id="@+id/password_input"
+        style="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="@dimen/activity_horizontal_margin"
+        android:layout_marginTop="@dimen/default_margin"
+        android:layout_marginEnd="@dimen/activity_horizontal_margin"
+        android:hint="@string/password"
+        app:layout_constraintBottom_toTopOf="@id/login_cta"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/user_input"
+        app:passwordToggleEnabled="true">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/password_edit_text"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:inputType="textPassword"
+            android:lines="1" />
+    </com.google.android.material.textfield.TextInputLayout>
+
+    <ProgressBar
+        android:id="@+id/loading_indicator"
+        style="?attr/progressBarStyle"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="@dimen/default_margin"
+        app:layout_constraintBottom_toTopOf="@id/login_cta"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent" />
+
+    <androidx.coordinatorlayout.widget.CoordinatorLayout
+        android:id="@+id/snackbar_holder"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="@dimen/activity_horizontal_margin"
+        android:layout_marginEnd="@dimen/activity_horizontal_margin"
+        app:layout_constraintBottom_toTopOf="@id/login_cta"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent" />
+
+    <com.google.android.material.button.MaterialButton
+        android:id="@+id/login_cta"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="@dimen/activity_horizontal_margin"
+        android:layout_marginEnd="@dimen/activity_horizontal_margin"
+        android:layout_marginBottom="@dimen/default_margin"
+        app:layout_constraintHeight_min="@dimen/default_button_height"
+        android:text="@string/login"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -0,0 +1,54 @@
+<?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:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".ui.home.MainActivity">
+
+    <androidx.appcompat.widget.Toolbar
+        android:id="@+id/toolbar"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:minHeight="?attr/actionBarSize"
+        android:background="?attr/colorSurface"
+        android:elevation="@dimen/toolbar_elevation"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:menu="@menu/main"
+        app:title="@string/content" />
+
+    <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
+        android:id="@+id/swipe_refresh_layout"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        android:layout_marginStart="@dimen/activity_horizontal_margin"
+        android:layout_marginEnd="@dimen/activity_horizontal_margin"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/toolbar">
+
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/recycler"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            tools:listitem="@layout/item_favourite_content" />
+    </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
+
+    <TextView
+        android:id="@+id/error_message"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="@dimen/activity_horizontal_margin"
+        android:layout_marginEnd="@dimen/activity_horizontal_margin"
+        android:text="@string/something_went_wrong"
+        android:gravity="center"
+        android:textAppearance="?attr/textAppearanceHeadline4"
+        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/layout/activity_splash.xml

@@ -0,0 +1,16 @@
+<?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:layout_width="match_parent"
+    android:layout_height="match_parent"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:background="?attr/colorSurface">
+
+    <ImageView
+        android:layout_width="@dimen/content_img_height"
+        android:layout_gravity="center"
+        app:srcCompat="@mipmap/ic_launcher_round"
+        android:layout_height="@dimen/content_img_height"
+        tools:ignore="ContentDescription" />
+
+</FrameLayout>

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

@@ -0,0 +1,56 @@
+<?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:layout_width="match_parent"
+    android:layout_height="wrap_content">
+
+    <ImageView
+        android:id="@+id/img"
+        android:layout_width="@dimen/content_img_height"
+        android:layout_height="@dimen/content_img_height"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:ignore="ContentDescription"
+        tools:src="@tools:sample/avatars" />
+
+    <TextView
+        android:id="@+id/title"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="@dimen/default_margin"
+        android:layout_marginBottom="@dimen/padding"
+        android:textAppearance="?attr/textAppearanceHeadline6"
+        app:layout_constraintBottom_toTopOf="@id/description"
+        app:layout_constraintStart_toEndOf="@id/img"
+        app:layout_constraintEnd_toStartOf="@id/favourite_cta"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_chainStyle="packed"
+        tools:text="@tools:sample/last_names" />
+
+    <TextView
+        android:id="@+id/description"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="@dimen/default_margin"
+        android:layout_marginTop="@dimen/padding"
+        android:textAppearance="?attr/textAppearanceSubtitle2"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toStartOf="@id/favourite_cta"
+        app:layout_constraintStart_toEndOf="@id/img"
+        app:layout_constraintTop_toBottomOf="@id/title"
+        tools:text="@tools:sample/last_names" />
+
+    <ImageView
+        android:id="@+id/favourite_cta"
+        android:background="?attr/selectableItemBackgroundBorderless"
+        android:layout_width="@dimen/touch_target_size"
+        android:layout_height="@dimen/touch_target_size"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:ignore="ContentDescription"
+        tools:src="@drawable/favorite_24" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/menu/main.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item
+        android:id="@+id/logout_cta"
+        android:icon="@drawable/logout_24"
+        android:title="@string/logout"
+        app:showAsAction="always" />
+</menu>

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-night/themes.xml

@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.TestShowCase" parent="Theme.MaterialComponents.DayNight.NoActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_200</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/black</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_200</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>

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

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>

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

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <dimen name="activity_horizontal_margin">24dp</dimen>
+    <dimen name="default_button_height">56dp</dimen>
+    <dimen name="default_margin">16dp</dimen>
+    <dimen name="toolbar_elevation">8dp</dimen>
+    <dimen name="content_img_height">120dp</dimen>
+    <dimen name="padding">6dp</dimen>
+    <dimen name="touch_target_size">48dp</dimen>
+    <dimen name="rounded_corner">12dp</dimen>
+</resources>

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

@@ -0,0 +1,13 @@
+<resources>
+    <string name="app_name">Test ShowCase</string>
+    <string name="login">Login</string>
+    <string name="username">Username</string>
+    <string name="password">Password</string>
+    <string name="username_is_invalid">Username is not filled properly!</string>
+    <string name="password_is_invalid">Password is not filled properly!</string>
+    <string name="credentials_invalid">No User with given credentials!</string>
+    <string name="something_went_wrong">Something went wrong!</string>
+    <string name="login_title">Mock Login</string>
+    <string name="content">Content</string>
+    <string name="logout">Logout</string>
+</resources>

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

@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.TestShowCase" parent="Theme.MaterialComponents.DayNight.NoActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_500</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/white</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_700</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>