├── app ├── .gitignore ├── src │ ├── main │ │ ├── res │ │ │ ├── mipmap-hdpi │ │ │ │ ├── ic_launcher.webp │ │ │ │ └── ic_launcher_round.webp │ │ │ ├── mipmap-mdpi │ │ │ │ ├── ic_launcher.webp │ │ │ │ └── ic_launcher_round.webp │ │ │ ├── mipmap-xhdpi │ │ │ │ ├── ic_launcher.webp │ │ │ │ └── ic_launcher_round.webp │ │ │ ├── mipmap-xxhdpi │ │ │ │ ├── ic_launcher.webp │ │ │ │ └── ic_launcher_round.webp │ │ │ ├── mipmap-xxxhdpi │ │ │ │ ├── ic_launcher.webp │ │ │ │ └── ic_launcher_round.webp │ │ │ ├── values │ │ │ │ ├── themes.xml │ │ │ │ ├── strings.xml │ │ │ │ └── colors.xml │ │ │ ├── mipmap-anydpi-v26 │ │ │ │ ├── ic_launcher.xml │ │ │ │ └── ic_launcher_round.xml │ │ │ ├── xml │ │ │ │ ├── backup_rules.xml │ │ │ │ └── data_extraction_rules.xml │ │ │ ├── drawable-v24 │ │ │ │ └── ic_launcher_foreground.xml │ │ │ └── drawable │ │ │ │ └── ic_launcher_background.xml │ │ ├── java │ │ │ └── com │ │ │ │ └── currency │ │ │ │ └── currencyconvertermm │ │ │ │ ├── features │ │ │ │ └── currencyconverter │ │ │ │ │ ├── exceptions │ │ │ │ │ └── NetworkNotAvailableException.kt │ │ │ │ │ ├── composables │ │ │ │ │ ├── UICurrencyConverter.kt │ │ │ │ │ ├── ConvertCurrencyButton.kt │ │ │ │ │ ├── SelectedCurrencyListItem.kt │ │ │ │ │ ├── CurrencyList.kt │ │ │ │ │ ├── common │ │ │ │ │ │ ├── AmountTextField.kt │ │ │ │ │ │ └── CurrencyAutoComplete.kt │ │ │ │ │ ├── RatesGridView.kt │ │ │ │ │ └── CurrencyConverterForm.kt │ │ │ │ │ ├── defferable │ │ │ │ │ └── PeriodicFetchLatestRates.kt │ │ │ │ │ └── CurrencyConverterVM.kt │ │ │ │ ├── ui │ │ │ │ └── theme │ │ │ │ │ ├── Color.kt │ │ │ │ │ ├── Shape.kt │ │ │ │ │ ├── Type.kt │ │ │ │ │ └── Theme.kt │ │ │ │ ├── MainActivity.kt │ │ │ │ ├── di │ │ │ │ ├── UseCaseModule.kt │ │ │ │ ├── CurrencyConverterModule.kt │ │ │ │ └── DataModule.kt │ │ │ │ ├── CurrencyApp.kt │ │ │ │ └── NetworkInfoProviderImpl.kt │ │ └── AndroidManifest.xml │ ├── androidTest │ │ └── java │ │ │ └── com │ │ │ └── currency │ │ │ └── currencyconvertermm │ │ │ ├── FakeNetworkInfoProvider.kt │ │ │ ├── FakeCurrencyAPI.kt │ │ │ ├── CurrencyConversionComposeUITests.kt │ │ │ └── CurrencyVMTest.kt │ └── test │ │ └── java │ │ └── com │ │ └── currency │ │ └── currencyconvertermm │ │ ├── FakeCurrenciesLocalSource.kt │ │ └── CurrencyVMTest.kt ├── proguard-rules.pro └── build.gradle ├── data ├── .gitignore ├── consumer-rules.pro ├── src │ ├── main │ │ ├── AndroidManifest.xml │ │ └── java │ │ │ └── com │ │ │ └── paypay │ │ │ └── data │ │ │ ├── network │ │ │ ├── CurrencyAPI.kt │ │ │ ├── NetLatestRates.kt │ │ │ ├── CurrencyAPIImpl.kt │ │ │ └── NetworkClient.kt │ │ │ ├── local │ │ │ ├── entities │ │ │ │ └── LocalCurrency.kt │ │ │ ├── CCDatabase.kt │ │ │ ├── dao │ │ │ │ └── CurrenciesDao.kt │ │ │ └── CurrenciesLocalSourceImpl.kt │ │ │ └── repo │ │ │ ├── CurrenciesRepository.kt │ │ │ └── LatestPricesRepository.kt │ ├── test │ │ └── java │ │ │ └── com │ │ │ └── paypay │ │ │ └── data │ │ │ └── ExampleUnitTest.kt │ └── androidTest │ │ └── java │ │ └── com │ │ └── paypay │ │ └── data │ │ └── ExampleInstrumentedTest.kt ├── proguard-rules.pro └── build.gradle ├── domain ├── .gitignore ├── src │ └── main │ │ └── java │ │ └── com │ │ └── currency │ │ └── domain │ │ ├── NetworkInfoProvider.kt │ │ ├── models │ │ └── DMCurrencies.kt │ │ ├── CurrenciesRepository.kt │ │ ├── usecase │ │ ├── UseCaseLoadCurrenciesDataFromNetwork.kt │ │ ├── UseCaseLoadLatestPricesFromNetwork.kt │ │ ├── UseCaseFetchCurrencies.kt │ │ └── UseCaseFetchLatestPrices.kt │ │ ├── LatestPricesRepository.kt │ │ ├── CurrencyConverter.kt │ │ └── CurrenciesLocalSource.kt └── build.gradle ├── .idea ├── .name ├── .gitignore ├── vcs.xml ├── compiler.xml ├── misc.xml ├── gradle.xml └── inspectionProfiles │ └── Project_Default.xml ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── .gitignore ├── settings.gradle ├── gradle.properties ├── README.md ├── gradlew.bat └── gradlew /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build -------------------------------------------------------------------------------- /data/.gitignore: -------------------------------------------------------------------------------- 1 | /build -------------------------------------------------------------------------------- /data/consumer-rules.pro: -------------------------------------------------------------------------------- 1 | -------------------------------------------------------------------------------- /domain/.gitignore: -------------------------------------------------------------------------------- 1 | /build -------------------------------------------------------------------------------- /.idea/.name: -------------------------------------------------------------------------------- 1 | CurrencyConvertermm -------------------------------------------------------------------------------- /.idea/.gitignore: -------------------------------------------------------------------------------- 1 | # Default ignored files 2 | /shelf/ 3 | /workspace.xml 4 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/oianmol/CurrencyConverter/master/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /app/src/main/res/mipmap-hdpi/ic_launcher.webp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/oianmol/CurrencyConverter/master/app/src/main/res/mipmap-hdpi/ic_launcher.webp -------------------------------------------------------------------------------- /app/src/main/res/mipmap-mdpi/ic_launcher.webp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/oianmol/CurrencyConverter/master/app/src/main/res/mipmap-mdpi/ic_launcher.webp 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-------------------------------------------------------------------------------- /app/src/main/res/mipmap-hdpi/ic_launcher_round.webp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/oianmol/CurrencyConverter/master/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp -------------------------------------------------------------------------------- /app/src/main/res/mipmap-mdpi/ic_launcher_round.webp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/oianmol/CurrencyConverter/master/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/oianmol/CurrencyConverter/master/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/oianmol/CurrencyConverter/master/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/oianmol/CurrencyConverter/master/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp -------------------------------------------------------------------------------- /data/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | -------------------------------------------------------------------------------- /.idea/vcs.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | -------------------------------------------------------------------------------- /data/src/main/java/com/paypay/data/network/CurrencyAPI.kt: -------------------------------------------------------------------------------- 1 | package com.mm.data.network 2 | 3 | interface CurrencyAPI { 4 | suspend fun networkFetchCurrencies(): Map 5 | suspend fun networkFetchLatestRates(): NetLatestRates 6 | } -------------------------------------------------------------------------------- /domain/src/main/java/com/currency/domain/NetworkInfoProvider.kt: -------------------------------------------------------------------------------- 1 | package com.currency.domain 2 | 3 | import kotlinx.coroutines.flow.Flow 4 | 5 | interface NetworkInfoProvider { 6 | fun listenToChanges(): Flow 7 | fun hasNetwork(): Boolean 8 | } -------------------------------------------------------------------------------- /app/src/main/java/com/currency/currencyconvertermm/features/currencyconverter/exceptions/NetworkNotAvailableException.kt: -------------------------------------------------------------------------------- 1 | package com.currency.currencyconvertermm.features.currencyconverter.exceptions 2 | 3 | class NetworkNotAvailableException(message: String) : Throwable(message) 4 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Fri Jun 17 15:50:47 IST 2022 2 | distributionBase=GRADLE_USER_HOME 3 | distributionUrl=https\://services.gradle.org/distributions/gradle-7.3.3-bin.zip 4 | distributionPath=wrapper/dists 5 | zipStorePath=wrapper/dists 6 | zipStoreBase=GRADLE_USER_HOME 7 | -------------------------------------------------------------------------------- /app/src/main/res/values/themes.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 7 | -------------------------------------------------------------------------------- /app/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | CurrencyConverter 3 | Select a Currency 4 | Enter Amount 5 | Convert 6 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | *.iml 2 | .gradle 3 | /local.properties 4 | /.idea/caches 5 | /.idea/libraries 6 | /.idea/modules.xml 7 | /.idea/workspace.xml 8 | /.idea/navEditor.xml 9 | /.idea/assetWizardSettings.xml 10 | .DS_Store 11 | /build 12 | /captures 13 | .externalNativeBuild 14 | .cxx 15 | local.properties 16 | -------------------------------------------------------------------------------- /app/src/main/java/com/currency/currencyconvertermm/ui/theme/Color.kt: -------------------------------------------------------------------------------- 1 | package com.currency.currencyconvertermm.ui.theme 2 | 3 | import androidx.compose.ui.graphics.Color 4 | 5 | val Purple200 = Color(0xFFBB86FC) 6 | val Purple500 = Color(0xFF6200EE) 7 | val Purple700 = Color(0xFF3700B3) 8 | val Teal200 = Color(0xFF03DAC5) -------------------------------------------------------------------------------- /domain/src/main/java/com/currency/domain/models/DMCurrencies.kt: -------------------------------------------------------------------------------- 1 | package com.currency.domain.models 2 | 3 | data class DMCurrency(val currency: String, val name: String) 4 | data class DMLatestRate(val currency: String, val rate: Double,val name:String) { 5 | fun calculatedRate(input: Double) = rate.times(input) 6 | } 7 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | -------------------------------------------------------------------------------- /domain/src/main/java/com/currency/domain/CurrenciesRepository.kt: -------------------------------------------------------------------------------- 1 | package com.currency.domain 2 | 3 | import androidx.paging.PagingData 4 | import com.currency.domain.models.DMCurrency 5 | import kotlinx.coroutines.flow.Flow 6 | 7 | interface CurrenciesRepository { 8 | fun fetchCurrencies(searchKey: String?): Flow> 9 | suspend fun preloadCurrencies() 10 | } -------------------------------------------------------------------------------- /data/src/main/java/com/paypay/data/network/NetLatestRates.kt: -------------------------------------------------------------------------------- 1 | package com.mm.data.network 2 | 3 | import kotlinx.serialization.Serializable 4 | 5 | @Serializable 6 | data class NetLatestRates( 7 | val base: String? = null, 8 | val disclaimer: String? = null, 9 | val license: String? = null, 10 | val rates: Map? = null, 11 | val timestamp: Long? = null 12 | ) -------------------------------------------------------------------------------- /domain/src/main/java/com/currency/domain/usecase/UseCaseLoadCurrenciesDataFromNetwork.kt: -------------------------------------------------------------------------------- 1 | package com.currency.domain.usecase 2 | 3 | import com.currency.domain.CurrenciesRepository 4 | 5 | class UseCaseLoadCurrenciesDataFromNetwork( 6 | private val currencyRepository: CurrenciesRepository 7 | ) { 8 | suspend fun perform() { 9 | currencyRepository.preloadCurrencies() 10 | } 11 | } -------------------------------------------------------------------------------- /app/src/main/java/com/currency/currencyconvertermm/ui/theme/Shape.kt: -------------------------------------------------------------------------------- 1 | package com.currency.currencyconvertermm.ui.theme 2 | 3 | import androidx.compose.foundation.shape.RoundedCornerShape 4 | import androidx.compose.material.Shapes 5 | import androidx.compose.ui.unit.dp 6 | 7 | val Shapes = Shapes( 8 | small = RoundedCornerShape(4.dp), 9 | medium = RoundedCornerShape(4.dp), 10 | large = RoundedCornerShape(0.dp) 11 | ) -------------------------------------------------------------------------------- /domain/src/main/java/com/currency/domain/LatestPricesRepository.kt: -------------------------------------------------------------------------------- 1 | package com.currency.domain 2 | 3 | import androidx.paging.PagingData 4 | import com.currency.domain.models.DMLatestRate 5 | import kotlinx.coroutines.flow.Flow 6 | import java.util.* 7 | 8 | interface LatestPricesRepository { 9 | suspend fun preloadLatestRates(): Date 10 | fun fetchRates(searchKey: String?, input: Double): Flow> 11 | } -------------------------------------------------------------------------------- /domain/src/main/java/com/currency/domain/usecase/UseCaseLoadLatestPricesFromNetwork.kt: -------------------------------------------------------------------------------- 1 | package com.currency.domain.usecase 2 | 3 | import com.currency.domain.LatestPricesRepository 4 | import java.util.* 5 | 6 | class UseCaseLoadLatestPricesFromNetwork(private val latestPricesRepository: LatestPricesRepository) { 7 | suspend fun perform(): Date { 8 | return latestPricesRepository.preloadLatestRates() 9 | } 10 | } -------------------------------------------------------------------------------- /app/src/main/res/values/colors.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | #FFBB86FC 4 | #FF6200EE 5 | #FF3700B3 6 | #FF03DAC5 7 | #FF018786 8 | #FF000000 9 | #FFFFFFFF 10 | -------------------------------------------------------------------------------- /data/src/main/java/com/paypay/data/local/entities/LocalCurrency.kt: -------------------------------------------------------------------------------- 1 | package com.mm.data.local.entities 2 | 3 | import androidx.room.ColumnInfo 4 | import androidx.room.Entity 5 | import androidx.room.PrimaryKey 6 | 7 | @Entity(tableName = "currencies") 8 | data class LocalCurrency( 9 | @PrimaryKey val currency: String, 10 | @ColumnInfo(name = "name") val name: String, 11 | @ColumnInfo(name = "rate") val rate: Double? = null 12 | ) -------------------------------------------------------------------------------- /data/src/test/java/com/paypay/data/ExampleUnitTest.kt: -------------------------------------------------------------------------------- 1 | package com.mm.data 2 | 3 | import org.junit.Test 4 | 5 | import org.junit.Assert.* 6 | 7 | /** 8 | * Example local unit test, which will execute on the development machine (host). 9 | * 10 | * See [testing documentation](http://d.android.com/tools/testing). 11 | */ 12 | class ExampleUnitTest { 13 | @Test 14 | fun addition_isCorrect() { 15 | assertEquals(4, 2 + 2) 16 | } 17 | } -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | pluginManagement { 2 | repositories { 3 | gradlePluginPortal() 4 | google() 5 | mavenCentral() 6 | } 7 | } 8 | dependencyResolutionManagement { 9 | repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS) 10 | repositories { 11 | google() 12 | mavenCentral() 13 | } 14 | } 15 | rootProject.name = "CurrencyConvertermm" 16 | include ':app' 17 | include ':domain' 18 | include ':data' 19 | -------------------------------------------------------------------------------- /data/src/main/java/com/paypay/data/local/CCDatabase.kt: -------------------------------------------------------------------------------- 1 | package com.mm.data.local 2 | 3 | import androidx.room.Database 4 | import androidx.room.RoomDatabase 5 | import com.mm.data.local.dao.CurrenciesDao 6 | import com.mm.data.local.entities.LocalCurrency 7 | 8 | @Database( 9 | entities = [LocalCurrency::class], 10 | version = 1, 11 | exportSchema = false 12 | ) 13 | abstract class CCDatabase : RoomDatabase() { 14 | abstract fun currenciesDao(): CurrenciesDao 15 | } -------------------------------------------------------------------------------- /domain/src/main/java/com/currency/domain/usecase/UseCaseFetchCurrencies.kt: -------------------------------------------------------------------------------- 1 | package com.currency.domain.usecase 2 | 3 | import com.currency.domain.CurrenciesRepository 4 | import com.currency.domain.models.DMCurrency 5 | import kotlinx.coroutines.flow.Flow 6 | 7 | class UseCaseFetchCurrencies(private val currenciesRepository: CurrenciesRepository,) { 8 | fun perform(value: String): Flow> { 9 | return currenciesRepository.fetchCurrencies(value) 10 | } 11 | } -------------------------------------------------------------------------------- /.idea/compiler.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | -------------------------------------------------------------------------------- /domain/build.gradle: -------------------------------------------------------------------------------- 1 | plugins { 2 | id("java-library") 3 | id("org.jetbrains.kotlin.jvm") 4 | } 5 | 6 | java { 7 | sourceCompatibility = JavaVersion.VERSION_1_8 8 | targetCompatibility = JavaVersion.VERSION_1_8 9 | } 10 | 11 | dependencies { 12 | api("org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.6.21") 13 | implementation("androidx.paging:paging-common:3.1.1") 14 | api("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.6.1") 15 | implementation("androidx.paging:paging-common-ktx:3.1.1") 16 | } 17 | 18 | -------------------------------------------------------------------------------- /domain/src/main/java/com/currency/domain/usecase/UseCaseFetchLatestPrices.kt: -------------------------------------------------------------------------------- 1 | package com.currency.domain.usecase 2 | 3 | import com.currency.domain.LatestPricesRepository 4 | import com.currency.domain.models.DMLatestRate 5 | import kotlinx.coroutines.flow.Flow 6 | 7 | class UseCaseFetchLatestPrices(private val latestPricesRepository: LatestPricesRepository) { 8 | fun perform(value: String): Flow> { 9 | val input = value.toDoubleOrNull() ?: 0.0 10 | return latestPricesRepository.fetchRates("", input) 11 | } 12 | } -------------------------------------------------------------------------------- /app/src/main/res/xml/backup_rules.xml: -------------------------------------------------------------------------------- 1 | 8 | 9 | 13 | -------------------------------------------------------------------------------- /domain/src/main/java/com/currency/domain/CurrencyConverter.kt: -------------------------------------------------------------------------------- 1 | package com.currency.domain 2 | 3 | object CurrencyConverter { 4 | const val CURRENCIES_KEY: String = "currenciesLastTime" 5 | const val LATEST_PRICES_KEY: String = "LATEST_PRICES_KEY" 6 | 7 | const val KEY_LATEST_PRICES = "latestPrices" 8 | const val API_URL = "https://openexchangerates.org/api/" 9 | const val ENDPOINT_CURRENCIES = "currencies.json" 10 | const val LATEST_RATES = "latest.json" 11 | const val keyAppId = "app_id" 12 | const val APP_ID = 13 | "9d65efadab1243a5b429dad873f887b1" // provide this through ENV variables/build config fields 14 | } -------------------------------------------------------------------------------- /app/src/androidTest/java/com/currency/currencyconvertermm/FakeNetworkInfoProvider.kt: -------------------------------------------------------------------------------- 1 | package com.currency.currencyconvertermm 2 | 3 | import com.currency.domain.NetworkInfoProvider 4 | import kotlinx.coroutines.flow.Flow 5 | import kotlinx.coroutines.flow.emptyFlow 6 | 7 | class FakeNetworkInfoProvider : NetworkInfoProvider { 8 | var isEnabled = false 9 | fun networkSwitch(enabled:Boolean){ 10 | this.isEnabled = enabled 11 | } 12 | 13 | override fun listenToChanges(): Flow { 14 | return emptyFlow() 15 | } 16 | 17 | override fun hasNetwork(): Boolean { 18 | return isEnabled 19 | } 20 | 21 | } 22 | -------------------------------------------------------------------------------- /app/src/main/res/xml/data_extraction_rules.xml: -------------------------------------------------------------------------------- 1 | 6 | 7 | 8 | 12 | 13 | 19 | -------------------------------------------------------------------------------- /.idea/misc.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 9 | 10 | 11 | 12 | 13 | 14 | 16 | -------------------------------------------------------------------------------- /domain/src/main/java/com/currency/domain/CurrenciesLocalSource.kt: -------------------------------------------------------------------------------- 1 | package com.currency.domain 2 | 3 | import com.currency.domain.models.DMCurrency 4 | import com.currency.domain.models.DMLatestRate 5 | import kotlinx.coroutines.flow.Flow 6 | import java.util.* 7 | 8 | interface CurrenciesLocalSource { 9 | fun fetchLocalRates(searchKey: String?, input: Double): Flow> 10 | suspend fun saveLatestRates(rates: Map?) 11 | suspend fun saveCurrenciesLocally(currencies: Map) 12 | fun fetchLocalCurrencies(searchKey: String?): Flow> 13 | suspend fun canFetchCurrencies(): Boolean 14 | suspend fun canFetchLatestRates(): Boolean 15 | suspend fun latestRatesFetchLastTime(): Date? 16 | } -------------------------------------------------------------------------------- /data/src/androidTest/java/com/paypay/data/ExampleInstrumentedTest.kt: -------------------------------------------------------------------------------- 1 | package com.mm.data 2 | 3 | import androidx.test.platform.app.InstrumentationRegistry 4 | import androidx.test.ext.junit.runners.AndroidJUnit4 5 | 6 | import org.junit.Test 7 | import org.junit.runner.RunWith 8 | 9 | import org.junit.Assert.* 10 | 11 | /** 12 | * Instrumented test, which will execute on an Android device. 13 | * 14 | * See [testing documentation](http://d.android.com/tools/testing). 15 | */ 16 | @RunWith(AndroidJUnit4::class) 17 | class ExampleInstrumentedTest { 18 | @Test 19 | fun useAppContext() { 20 | // Context of the app under test. 21 | val appContext = InstrumentationRegistry.getInstrumentation().targetContext 22 | assertEquals("com.mm.data.test", appContext.packageName) 23 | } 24 | } -------------------------------------------------------------------------------- /app/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # You can control the set of applied configuration files using the 3 | # proguardFiles setting in build.gradle. 4 | # 5 | # For more details, see 6 | # http://developer.android.com/guide/developing/tools/proguard.html 7 | 8 | # If your project uses WebView with JS, uncomment the following 9 | # and specify the fully qualified class name to the JavaScript interface 10 | # class: 11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 12 | # public *; 13 | #} 14 | 15 | # Uncomment this to preserve the line number information for 16 | # debugging stack traces. 17 | #-keepattributes SourceFile,LineNumberTable 18 | 19 | # If you keep the line number information, uncomment this to 20 | # hide the original source file name. 21 | #-renamesourcefileattribute SourceFile -------------------------------------------------------------------------------- /data/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # You can control the set of applied configuration files using the 3 | # proguardFiles setting in build.gradle. 4 | # 5 | # For more details, see 6 | # http://developer.android.com/guide/developing/tools/proguard.html 7 | 8 | # If your project uses WebView with JS, uncomment the following 9 | # and specify the fully qualified class name to the JavaScript interface 10 | # class: 11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 12 | # public *; 13 | #} 14 | 15 | # Uncomment this to preserve the line number information for 16 | # debugging stack traces. 17 | #-keepattributes SourceFile,LineNumberTable 18 | 19 | # If you keep the line number information, uncomment this to 20 | # hide the original source file name. 21 | #-renamesourcefileattribute SourceFile -------------------------------------------------------------------------------- /app/src/androidTest/java/com/currency/currencyconvertermm/FakeCurrencyAPI.kt: -------------------------------------------------------------------------------- 1 | package com.currency.currencyconvertermm 2 | 3 | import com.mm.data.network.CurrencyAPI 4 | import com.mm.data.network.NetLatestRates 5 | 6 | class FakeCurrencyAPI : CurrencyAPI { 7 | override suspend fun networkFetchCurrencies(): Map { 8 | return hashMapOf().apply { 9 | put("INR", "Indian Rupee") 10 | put("XYZ", "XYZ currency") 11 | } 12 | } 13 | 14 | override suspend fun networkFetchLatestRates(): NetLatestRates { 15 | return NetLatestRates( 16 | timestamp = System.currentTimeMillis() / 1000, 17 | rates = hashMapOf().apply { 18 | put("INR", 75.0) 19 | put("XYZ", 100.0) 20 | }) 21 | 22 | } 23 | 24 | } 25 | -------------------------------------------------------------------------------- /.idea/gradle.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 20 | 21 | -------------------------------------------------------------------------------- /app/src/main/java/com/currency/currencyconvertermm/features/currencyconverter/composables/UICurrencyConverter.kt: -------------------------------------------------------------------------------- 1 | package com.currency.currencyconvertermm.features.currencyconverter.composables 2 | 3 | import androidx.compose.foundation.layout.padding 4 | import androidx.compose.material.* 5 | import androidx.compose.runtime.Composable 6 | import androidx.compose.ui.Modifier 7 | import androidx.compose.ui.graphics.Color 8 | import androidx.compose.ui.tooling.preview.Preview 9 | import com.currency.currencyconvertermm.features.currencyconverter.CurrencyConverterVM 10 | 11 | @OptIn(ExperimentalMaterialApi::class) 12 | @Composable 13 | fun UICurrencyConverter(viewModel: CurrencyConverterVM) { 14 | Scaffold(topBar = { 15 | TopAppBar(title = { 16 | Text(text = "Currency Converter") 17 | }) 18 | }) { innerPadding -> 19 | CurrencyConverterForm(Modifier.padding(innerPadding), viewModel) 20 | } 21 | } -------------------------------------------------------------------------------- /data/src/main/java/com/paypay/data/network/CurrencyAPIImpl.kt: -------------------------------------------------------------------------------- 1 | package com.mm.data.network 2 | 3 | import com.currency.domain.CurrencyConverter 4 | import io.ktor.client.* 5 | import io.ktor.client.call.* 6 | import io.ktor.client.request.* 7 | import javax.inject.Inject 8 | 9 | class CurrencyAPIImpl @Inject constructor(private val httpClient: HttpClient) : CurrencyAPI { 10 | override suspend fun networkFetchCurrencies(): Map { 11 | return httpClient.get(CurrencyConverter.API_URL + CurrencyConverter.ENDPOINT_CURRENCIES) 12 | .body() 13 | } 14 | 15 | override suspend fun networkFetchLatestRates(): NetLatestRates { 16 | val rates = 17 | httpClient.get(CurrencyConverter.API_URL + CurrencyConverter.LATEST_RATES) { 18 | parameter(CurrencyConverter.keyAppId, CurrencyConverter.APP_ID) 19 | }.body() 20 | return rates 21 | } 22 | } -------------------------------------------------------------------------------- /app/src/main/java/com/currency/currencyconvertermm/ui/theme/Type.kt: -------------------------------------------------------------------------------- 1 | package com.currency.currencyconvertermm.ui.theme 2 | 3 | import androidx.compose.material.Typography 4 | import androidx.compose.ui.text.TextStyle 5 | import androidx.compose.ui.text.font.FontFamily 6 | import androidx.compose.ui.text.font.FontWeight 7 | import androidx.compose.ui.unit.sp 8 | 9 | // Set of Material typography styles to start with 10 | val Typography = Typography( 11 | body1 = TextStyle( 12 | fontFamily = FontFamily.Default, 13 | fontWeight = FontWeight.Normal, 14 | fontSize = 16.sp 15 | ) 16 | /* Other default text styles to override 17 | button = TextStyle( 18 | fontFamily = FontFamily.Default, 19 | fontWeight = FontWeight.W500, 20 | fontSize = 14.sp 21 | ), 22 | caption = TextStyle( 23 | fontFamily = FontFamily.Default, 24 | fontWeight = FontWeight.Normal, 25 | fontSize = 12.sp 26 | ) 27 | */ 28 | ) -------------------------------------------------------------------------------- /data/src/main/java/com/paypay/data/local/dao/CurrenciesDao.kt: -------------------------------------------------------------------------------- 1 | package com.mm.data.local.dao 2 | 3 | import androidx.paging.PagingSource 4 | import androidx.room.* 5 | import com.mm.data.local.entities.LocalCurrency 6 | import kotlinx.coroutines.flow.Flow 7 | 8 | @Dao 9 | interface CurrenciesDao { 10 | 11 | @Query("SELECT * FROM currencies") 12 | fun getAll(): List 13 | 14 | // The Int type parameter tells Room to use a PositionalDataSource object. 15 | @Query("SELECT * FROM currencies where currency like :key or name like :key ORDER BY name ASC") 16 | fun currenciesByKey(key: String): Flow> 17 | 18 | // The Int type parameter tells Room to use a PositionalDataSource object. 19 | @Query("SELECT * FROM currencies ORDER BY name ASC") 20 | fun currenciesPaginated(): Flow> 21 | 22 | @Insert(onConflict = OnConflictStrategy.IGNORE) 23 | fun insertAll(currencies: List) 24 | 25 | @Query("UPDATE currencies SET rate = :rate where currency = :key") 26 | fun updateCurrencyRates(key: String, rate: Double) 27 | 28 | 29 | } -------------------------------------------------------------------------------- /app/src/main/java/com/currency/currencyconvertermm/features/currencyconverter/composables/ConvertCurrencyButton.kt: -------------------------------------------------------------------------------- 1 | package com.currency.currencyconvertermm.features.currencyconverter.composables 2 | 3 | import androidx.compose.foundation.layout.fillMaxWidth 4 | import androidx.compose.foundation.layout.height 5 | import androidx.compose.foundation.layout.padding 6 | import androidx.compose.material.Button 7 | import androidx.compose.material.Text 8 | import androidx.compose.runtime.Composable 9 | import androidx.compose.ui.Modifier 10 | import androidx.compose.ui.res.stringResource 11 | import androidx.compose.ui.unit.dp 12 | import com.currency.currencyconvertermm.R 13 | import com.currency.currencyconvertermm.ui.theme.Typography 14 | 15 | @Composable 16 | fun ConvertCurrencyButton(modifier: Modifier, onClick: () -> Unit) { 17 | Button( 18 | onClick = { 19 | onClick() 20 | }, 21 | modifier 22 | .fillMaxWidth() 23 | .height(50.dp) 24 | .padding(top = 8.dp), 25 | ) { 26 | Text( 27 | text = stringResource(R.string.convert), 28 | style = Typography.subtitle2 29 | ) 30 | } 31 | } -------------------------------------------------------------------------------- /data/src/main/java/com/paypay/data/network/NetworkClient.kt: -------------------------------------------------------------------------------- 1 | package com.mm.data.network 2 | 3 | import android.util.Log 4 | import io.ktor.client.* 5 | import io.ktor.client.engine.android.* 6 | import io.ktor.client.plugins.contentnegotiation.* 7 | import io.ktor.client.plugins.logging.* 8 | import io.ktor.client.plugins.observer.* 9 | import io.ktor.serialization.kotlinx.json.* 10 | import kotlinx.serialization.json.Json 11 | 12 | object NetworkClient { 13 | private const val TIME_OUT = 60_000 14 | 15 | fun buildNetworkClient() = HttpClient(Android) { 16 | 17 | engine { 18 | connectTimeout = TIME_OUT 19 | socketTimeout = TIME_OUT 20 | } 21 | 22 | install(Logging) { 23 | logger = object : Logger { 24 | override fun log(message: String) { 25 | Log.d("Logger Ktor =>", message) // We Can use Timber! 26 | } 27 | 28 | } 29 | level = LogLevel.ALL 30 | } 31 | 32 | install(ContentNegotiation) { 33 | json(Json { 34 | prettyPrint = true 35 | isLenient = true 36 | }) 37 | } 38 | 39 | install(ResponseObserver) { 40 | onResponse { response -> 41 | Log.d("HTTP status:", "${response.status.value}") // We Can use Timber! 42 | } 43 | } 44 | } 45 | } -------------------------------------------------------------------------------- /app/src/main/java/com/currency/currencyconvertermm/features/currencyconverter/defferable/PeriodicFetchLatestRates.kt: -------------------------------------------------------------------------------- 1 | package com.currency.currencyconvertermm.features.currencyconverter.defferable 2 | 3 | import android.content.Context 4 | import androidx.hilt.work.HiltWorker 5 | import androidx.work.CoroutineWorker 6 | import androidx.work.WorkerParameters 7 | import com.currency.domain.usecase.UseCaseLoadCurrenciesDataFromNetwork 8 | import com.currency.domain.usecase.UseCaseLoadLatestPricesFromNetwork 9 | import dagger.assisted.Assisted 10 | import dagger.assisted.AssistedInject 11 | 12 | @HiltWorker 13 | class PeriodicFetchLatestRates @AssistedInject constructor( 14 | @Assisted appContext: Context, 15 | @Assisted workerParams: WorkerParameters, 16 | private val useCaseFetchLatestPrices: UseCaseLoadLatestPricesFromNetwork, 17 | private val useCaseLoadCurrenciesDataFromNetwork: UseCaseLoadCurrenciesDataFromNetwork 18 | ) : 19 | CoroutineWorker(appContext, workerParams) { 20 | override suspend fun doWork(): Result { 21 | return try { 22 | useCaseLoadCurrenciesDataFromNetwork.perform() 23 | useCaseFetchLatestPrices.perform() 24 | Result.success() 25 | } catch (ex: Exception) { 26 | Result.failure() 27 | } 28 | } 29 | } -------------------------------------------------------------------------------- /app/src/main/java/com/currency/currencyconvertermm/features/currencyconverter/composables/SelectedCurrencyListItem.kt: -------------------------------------------------------------------------------- 1 | package com.currency.currencyconvertermm.features.currencyconverter.composables 2 | 3 | import androidx.compose.foundation.clickable 4 | import androidx.compose.material.* 5 | import androidx.compose.material.icons.Icons 6 | import androidx.compose.material.icons.filled.Clear 7 | import androidx.compose.material.icons.filled.Done 8 | import androidx.compose.runtime.Composable 9 | import androidx.compose.ui.Modifier 10 | 11 | @OptIn(ExperimentalMaterialApi::class) 12 | @Composable 13 | fun SelectedCurrencyListItem(selectedCurrency: Pair?, key: String, value: String,modifier: Modifier,onClearCurrency:()->Unit) { 14 | ListItem(icon = { 15 | if (selectedCurrency?.first == key) { 16 | Icon(imageVector = Icons.Default.Done, contentDescription = null) 17 | } 18 | }, text = { 19 | Text(text = value) 20 | }, secondaryText = { 21 | Text(text = key) 22 | }, modifier = modifier, trailing = { 23 | selectedCurrency?.let { 24 | IconButton(onClick = { 25 | onClearCurrency() 26 | }) { 27 | Icon(imageVector = Icons.Default.Clear, contentDescription = null) 28 | } 29 | } 30 | }) 31 | } -------------------------------------------------------------------------------- /data/src/main/java/com/paypay/data/repo/CurrenciesRepository.kt: -------------------------------------------------------------------------------- 1 | package com.mm.data.repo 2 | 3 | import com.currency.domain.CurrenciesLocalSource 4 | import com.currency.domain.CurrenciesRepository 5 | import com.currency.domain.models.DMCurrency 6 | import com.mm.data.network.CurrencyAPI 7 | import kotlinx.coroutines.flow.Flow 8 | import kotlinx.coroutines.withContext 9 | import javax.inject.Inject 10 | import kotlin.coroutines.CoroutineContext 11 | 12 | class CurrenciesRepositoryImpl @Inject constructor( 13 | private val coroutineContext: CoroutineContext, 14 | private val currencyAPI: CurrencyAPI, 15 | private val currenciesLocalSource: CurrenciesLocalSource 16 | ) : CurrenciesRepository { 17 | 18 | override suspend fun preloadCurrencies() { 19 | withContext(coroutineContext) { 20 | if (currenciesLocalSource.canFetchCurrencies()) { 21 | val currencies = networkFetchCurrencies() 22 | currenciesLocalSource.saveCurrenciesLocally(currencies) 23 | } 24 | } 25 | } 26 | 27 | private suspend fun networkFetchCurrencies(): Map { 28 | return currencyAPI.networkFetchCurrencies() 29 | } 30 | 31 | override fun fetchCurrencies( 32 | searchKey: String? 33 | ): Flow> { 34 | return currenciesLocalSource.fetchLocalCurrencies(searchKey) 35 | } 36 | } -------------------------------------------------------------------------------- /.idea/inspectionProfiles/Project_Default.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 23 | -------------------------------------------------------------------------------- /gradle.properties: -------------------------------------------------------------------------------- 1 | # Project-wide Gradle settings. 2 | # IDE (e.g. Android Studio) users: 3 | # Gradle settings configured through the IDE *will override* 4 | # any settings specified in this file. 5 | # For more details on how to configure your build environment visit 6 | # http://www.gradle.org/docs/current/userguide/build_environment.html 7 | # Specifies the JVM arguments used for the daemon process. 8 | # The setting is particularly useful for tweaking memory settings. 9 | org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8 10 | # When configured, Gradle will run in incubating parallel mode. 11 | # This option should only be used with decoupled projects. More details, visit 12 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects 13 | # org.gradle.parallel=true 14 | # AndroidX package structure to make it clearer which packages are bundled with the 15 | # Android operating system, and which are packaged with your app"s APK 16 | # https://developer.android.com/topic/libraries/support-library/androidx-rn 17 | android.useAndroidX=true 18 | # Kotlin code style for this project: "official" or "obsolete": 19 | kotlin.code.style=official 20 | # Enables namespacing of each library's R class so that its R class includes only the 21 | # resources declared in the library itself and none from the library's dependencies, 22 | # thereby reducing the size of the R class for that library 23 | android.nonTransitiveRClass=true -------------------------------------------------------------------------------- /app/src/main/java/com/currency/currencyconvertermm/ui/theme/Theme.kt: -------------------------------------------------------------------------------- 1 | package com.currency.currencyconvertermm.ui.theme 2 | 3 | import androidx.compose.foundation.isSystemInDarkTheme 4 | import androidx.compose.material.MaterialTheme 5 | import androidx.compose.material.darkColors 6 | import androidx.compose.material.lightColors 7 | import androidx.compose.runtime.Composable 8 | import androidx.compose.ui.graphics.Color 9 | 10 | private val DarkColorPalette = darkColors( 11 | primary = Color.Black, 12 | primaryVariant = Color.Black, 13 | secondary = Color.Green 14 | ) 15 | 16 | private val LightColorPalette = lightColors( 17 | primary = Purple500, 18 | primaryVariant = Purple700, 19 | secondary = Teal200 20 | 21 | /* Other default colors to override 22 | background = Color.White, 23 | surface = Color.White, 24 | onPrimary = Color.White, 25 | onSecondary = Color.Black, 26 | onBackground = Color.Black, 27 | onSurface = Color.Black, 28 | */ 29 | ) 30 | 31 | @Composable 32 | fun CurrencyConvertermmTheme( 33 | darkTheme: Boolean = isSystemInDarkTheme(), 34 | content: @Composable () -> Unit 35 | ) { 36 | val colors = if (darkTheme) { 37 | DarkColorPalette 38 | } else { 39 | LightColorPalette 40 | } 41 | 42 | MaterialTheme( 43 | colors = colors, 44 | typography = Typography, 45 | shapes = Shapes, 46 | content = content 47 | ) 48 | } -------------------------------------------------------------------------------- /app/src/main/java/com/currency/currencyconvertermm/MainActivity.kt: -------------------------------------------------------------------------------- 1 | package com.currency.currencyconvertermm 2 | 3 | import android.os.Bundle 4 | import androidx.activity.ComponentActivity 5 | import androidx.activity.compose.setContent 6 | import androidx.activity.viewModels 7 | import androidx.compose.foundation.layout.fillMaxSize 8 | import androidx.compose.material.MaterialTheme 9 | import androidx.compose.material.Surface 10 | import androidx.compose.ui.Modifier 11 | import com.currency.currencyconvertermm.features.currencyconverter.CurrencyConverterVM 12 | import com.currency.currencyconvertermm.features.currencyconverter.composables.UICurrencyConverter 13 | import com.currency.currencyconvertermm.ui.theme.CurrencyConvertermmTheme 14 | import dagger.hilt.android.AndroidEntryPoint 15 | 16 | @AndroidEntryPoint 17 | class MainActivity : ComponentActivity() { 18 | 19 | private val viewModel by viewModels() 20 | 21 | override fun onCreate(savedInstanceState: Bundle?) { 22 | super.onCreate(savedInstanceState) 23 | setContent { 24 | CurrencyConvertermmTheme { 25 | // A surface container using the 'background' color from the theme 26 | Surface( 27 | modifier = Modifier.fillMaxSize(), 28 | color = MaterialTheme.colors.background 29 | ) { 30 | UICurrencyConverter(viewModel) 31 | } 32 | } 33 | } 34 | } 35 | } -------------------------------------------------------------------------------- /app/src/main/java/com/currency/currencyconvertermm/di/UseCaseModule.kt: -------------------------------------------------------------------------------- 1 | package com.currency.currencyconvertermm.di 2 | 3 | import com.currency.domain.CurrenciesRepository 4 | import com.currency.domain.LatestPricesRepository 5 | import com.currency.domain.usecase.UseCaseFetchCurrencies 6 | import com.currency.domain.usecase.UseCaseFetchLatestPrices 7 | import com.currency.domain.usecase.UseCaseLoadCurrenciesDataFromNetwork 8 | import com.currency.domain.usecase.UseCaseLoadLatestPricesFromNetwork 9 | import dagger.Module 10 | import dagger.Provides 11 | import dagger.hilt.InstallIn 12 | import dagger.hilt.components.SingletonComponent 13 | import javax.inject.Singleton 14 | 15 | @Module 16 | @InstallIn(SingletonComponent::class) 17 | class UseCaseModule { 18 | @Provides 19 | @Singleton 20 | fun provideUseCaseFetchCurrencies(currenciesRepository: CurrenciesRepository) = 21 | UseCaseFetchCurrencies(currenciesRepository) 22 | 23 | @Provides 24 | @Singleton 25 | fun provideUseCaseFetchLatestPrices(latestPricesRepository: LatestPricesRepository) = 26 | UseCaseFetchLatestPrices(latestPricesRepository) 27 | 28 | @Provides 29 | @Singleton 30 | fun provideUseCaseloadLatestPrices(latestPricesRepository: LatestPricesRepository) = 31 | UseCaseLoadLatestPricesFromNetwork(latestPricesRepository) 32 | 33 | @Provides 34 | @Singleton 35 | fun provideUseCaseLoadCurrenciesData(currenciesRepository: CurrenciesRepository) = 36 | UseCaseLoadCurrenciesDataFromNetwork(currenciesRepository) 37 | } -------------------------------------------------------------------------------- /data/src/main/java/com/paypay/data/repo/LatestPricesRepository.kt: -------------------------------------------------------------------------------- 1 | package com.mm.data.repo 2 | 3 | import androidx.paging.PagingData 4 | import com.currency.domain.LatestPricesRepository 5 | import com.currency.domain.models.DMLatestRate 6 | import com.currency.domain.CurrenciesLocalSource 7 | import com.mm.data.network.CurrencyAPI 8 | import kotlinx.coroutines.flow.Flow 9 | import kotlinx.coroutines.withContext 10 | import java.util.* 11 | import javax.inject.Inject 12 | import kotlin.coroutines.CoroutineContext 13 | 14 | class LatestPricesRepositoryImpl @Inject constructor( 15 | private val coroutineContext: CoroutineContext, 16 | private val currencyAPI: CurrencyAPI, 17 | private val currenciesLocalSource: CurrenciesLocalSource 18 | ) : LatestPricesRepository { 19 | 20 | override fun fetchRates(searchKey: String?, input: Double): Flow> { 21 | return currenciesLocalSource.fetchLocalRates(searchKey, input) 22 | } 23 | 24 | override suspend fun preloadLatestRates(): Date { 25 | return withContext(coroutineContext) { 26 | if (currenciesLocalSource.canFetchLatestRates()) { 27 | val rates = currencyAPI.networkFetchLatestRates() 28 | currenciesLocalSource.saveLatestRates(rates.rates) 29 | currenciesLocalSource.latestRatesFetchLastTime()!! 30 | } else { 31 | currenciesLocalSource.latestRatesFetchLastTime()!! 32 | // ðŸ this will never be null if currenciesLocalSource.canFetchLatestRates() is tru 33 | } 34 | } 35 | } 36 | 37 | } -------------------------------------------------------------------------------- /app/src/main/java/com/currency/currencyconvertermm/di/CurrencyConverterModule.kt: -------------------------------------------------------------------------------- 1 | package com.currency.currencyconvertermm.di 2 | 3 | import com.currency.currencyconvertermm.NetworkInfoProviderImpl 4 | import com.currency.domain.CurrenciesLocalSource 5 | import com.currency.domain.CurrenciesRepository 6 | import com.currency.domain.LatestPricesRepository 7 | import com.currency.domain.NetworkInfoProvider 8 | import com.mm.data.local.CurrenciesLocalSourceImpl 9 | import com.mm.data.network.CurrencyAPI 10 | import com.mm.data.network.CurrencyAPIImpl 11 | import com.mm.data.repo.CurrenciesRepositoryImpl 12 | import com.mm.data.repo.LatestPricesRepositoryImpl 13 | import dagger.Binds 14 | import dagger.Module 15 | import dagger.hilt.InstallIn 16 | import dagger.hilt.components.SingletonComponent 17 | import javax.inject.Singleton 18 | 19 | @Module 20 | @InstallIn(SingletonComponent::class) 21 | abstract class CurrencyConverterModule { 22 | 23 | @Binds 24 | @Singleton 25 | abstract fun provideCurrenciesLocalSource(currenciesLocalSource: CurrenciesLocalSourceImpl): CurrenciesLocalSource 26 | 27 | @Binds 28 | @Singleton 29 | abstract fun provideCurrencyApi(currencyAPIImpl: CurrencyAPIImpl): CurrencyAPI 30 | 31 | @Binds 32 | @Singleton 33 | abstract fun provideNetworkInfoProviderImpl(networkInfoProvider: NetworkInfoProviderImpl): NetworkInfoProvider 34 | 35 | @Binds 36 | @Singleton 37 | abstract fun provideLatestPricesRepository(latestPricesRepo: LatestPricesRepositoryImpl): LatestPricesRepository 38 | 39 | @Binds 40 | @Singleton 41 | abstract fun provideCurrenciesRepository(latestPricesRepo: CurrenciesRepositoryImpl): CurrenciesRepository 42 | } -------------------------------------------------------------------------------- /app/src/main/java/com/currency/currencyconvertermm/CurrencyApp.kt: -------------------------------------------------------------------------------- 1 | package com.currency.currencyconvertermm 2 | 3 | import android.app.Application 4 | import androidx.hilt.work.HiltWorkerFactory 5 | import androidx.work.* 6 | import com.currency.currencyconvertermm.features.currencyconverter.defferable.PeriodicFetchLatestRates 7 | import com.currency.domain.CurrencyConverter 8 | import dagger.hilt.android.HiltAndroidApp 9 | import java.util.concurrent.TimeUnit 10 | import javax.inject.Inject 11 | 12 | @HiltAndroidApp 13 | class CurrencyApp : Application(), Configuration.Provider { 14 | 15 | @Inject 16 | lateinit var workerFactory: HiltWorkerFactory 17 | 18 | override fun getWorkManagerConfiguration() = 19 | Configuration.Builder() 20 | .setWorkerFactory(workerFactory) 21 | .build() 22 | 23 | override fun onCreate() { 24 | super.onCreate() 25 | scheduleWork() 26 | } 27 | 28 | private fun scheduleWork() { 29 | val constraints = Constraints.Builder() 30 | .setRequiredNetworkType(NetworkType.CONNECTED) 31 | .setRequiresBatteryNotLow(true) 32 | .setRequiresStorageNotLow(true) 33 | .build() 34 | PeriodicWorkRequestBuilder( 35 | 30, 36 | TimeUnit.MINUTES, 37 | ).setConstraints(constraints) 38 | .build().apply { 39 | WorkManager.getInstance(this@CurrencyApp) 40 | .enqueueUniquePeriodicWork( 41 | CurrencyConverter.KEY_LATEST_PRICES, 42 | ExistingPeriodicWorkPolicy.KEEP, 43 | this 44 | ) 45 | } 46 | } 47 | } -------------------------------------------------------------------------------- /app/src/main/java/com/currency/currencyconvertermm/features/currencyconverter/composables/CurrencyList.kt: -------------------------------------------------------------------------------- 1 | package com.currency.currencyconvertermm.features.currencyconverter.composables 2 | 3 | import androidx.compose.foundation.clickable 4 | import androidx.compose.foundation.layout.fillMaxHeight 5 | import androidx.compose.foundation.layout.fillMaxWidth 6 | import androidx.compose.foundation.layout.height 7 | import androidx.compose.foundation.lazy.LazyColumn 8 | import androidx.compose.foundation.lazy.items 9 | import androidx.compose.material.ExperimentalMaterialApi 10 | import androidx.compose.material.ListItem 11 | import androidx.compose.material.Text 12 | import androidx.compose.runtime.Composable 13 | import androidx.compose.ui.Modifier 14 | import androidx.compose.ui.text.font.FontWeight 15 | import androidx.compose.ui.unit.dp 16 | import androidx.paging.compose.LazyPagingItems 17 | import androidx.paging.compose.items 18 | import com.currency.currencyconvertermm.ui.theme.Typography 19 | import com.currency.domain.models.DMCurrency 20 | 21 | @OptIn(ExperimentalMaterialApi::class) 22 | @Composable 23 | fun CurrencyList( 24 | currencies: List, 25 | onCurrencySelected: (Pair) -> Unit 26 | ) { 27 | LazyColumn( 28 | Modifier 29 | .fillMaxHeight() 30 | .fillMaxWidth() 31 | ) { 32 | items(currencies) { item -> 33 | ListItem(icon = { 34 | Text(text = item.currency, style = Typography.subtitle1.copy(fontWeight = FontWeight.Bold)) 35 | }, text = { 36 | Text(text = item.name) 37 | },modifier = Modifier.clickable { 38 | onCurrencySelected(Pair(item.currency, item.name)) 39 | }) 40 | 41 | } 42 | } 43 | } -------------------------------------------------------------------------------- /app/src/main/res/drawable-v24/ic_launcher_foreground.xml: -------------------------------------------------------------------------------- 1 | 7 | 8 | 9 | 15 | 18 | 21 | 22 | 23 | 24 | 30 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 22 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 38 | 39 | 40 | 41 | -------------------------------------------------------------------------------- /app/src/main/java/com/currency/currencyconvertermm/di/DataModule.kt: -------------------------------------------------------------------------------- 1 | package com.currency.currencyconvertermm.di 2 | 3 | import android.content.Context 4 | import android.net.ConnectivityManager 5 | import androidx.datastore.core.DataStore 6 | import androidx.datastore.preferences.core.Preferences 7 | import androidx.datastore.preferences.preferencesDataStore 8 | import androidx.room.Room 9 | import com.mm.data.local.CCDatabase 10 | import com.mm.data.network.NetworkClient 11 | import dagger.Module 12 | import dagger.Provides 13 | import dagger.hilt.InstallIn 14 | import dagger.hilt.android.qualifiers.ApplicationContext 15 | import dagger.hilt.components.SingletonComponent 16 | import io.ktor.client.* 17 | import kotlinx.coroutines.Dispatchers 18 | import javax.inject.Singleton 19 | import kotlin.coroutines.CoroutineContext 20 | 21 | @Module 22 | @InstallIn(SingletonComponent::class) 23 | class DataModule { 24 | 25 | 26 | @Provides 27 | @Singleton 28 | fun provideCoroutineContext(): CoroutineContext = Dispatchers.IO 29 | 30 | @Provides 31 | @Singleton 32 | fun provideNetworkClient(): HttpClient { 33 | return NetworkClient.buildNetworkClient() 34 | } 35 | 36 | @Provides 37 | @Singleton 38 | fun provideConnectivityManager(@ApplicationContext context: Context) = 39 | context.getSystemService(ConnectivityManager::class.java) as ConnectivityManager 40 | 41 | @Provides 42 | @Singleton 43 | fun provideDataStore(@ApplicationContext context: Context) = context.dataStore 44 | 45 | 46 | @Provides 47 | @Singleton 48 | fun provideCCDatabase(@ApplicationContext context: Context) = 49 | Room.databaseBuilder(context, CCDatabase::class.java, "ccdb") 50 | .fallbackToDestructiveMigration() // TODO don't do this in prod 51 | .build() 52 | } 53 | 54 | val Context.dataStore: DataStore by preferencesDataStore(name = "settings") 55 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # CurrencyConverter 2 | 3 | ### Status: Implemented the Open Exchange API 4 | 5 | This is a jetpack compose sample app written in Kotlin following clean architecture principles. 6 | 7 | [OpenExchangeAPI](https://openexchangerates.org/) 8 | 9 | With added Tests! 10 | 11 | 1. Unit Tests 12 | 2. ViewModel Tests 13 | 3. Compose UI Tests 14 | 15 | ## 🏗️️ Built with ❤️ using Jetpack Compose 😁 16 | 17 | | What | How | 18 | |---------------- |------------------------------ | 19 | | 🎭 User Interface (Android) | [Jetpack Compose](https://developer.android.com/jetpack/compose) | 20 | | 🏗 Architecture | [Clean](https://blog.cleancoder.com/uncle-bob/2012/08/13/the-clean-architecture.html) | 21 | | 💉 DI (Android) | [Hilt](https://developer.android.com/training/dependency-injection/hilt-android) | 22 | | 🌊 Async | [Coroutines](https://kotlinlang.org/docs/coroutines-overview.html) + [Flow](https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines.flow/-flow/) | 23 | | 🌐 Networking | [Ktor](https://ktor.io/docs/welcome.html) | 24 | | 📄 Parsing | [KotlinX](https://kotlinlang.org/docs/serialization.html) | 25 | 26 | 27 | License 28 | ======= 29 | Copyright 2022 Anmol Verma 30 | 31 | Licensed under the Apache License, Version 2.0 (the "License"); 32 | you may not use this file except in compliance with the License. 33 | You may obtain a copy of the License at 34 | 35 | http://www.apache.org/licenses/LICENSE-2.0 36 | 37 | Unless required by applicable law or agreed to in writing, software 38 | distributed under the License is distributed on an "AS IS" BASIS, 39 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 40 | See the License for the specific language governing permissions and 41 | limitations under the License. 42 | 43 | -------------------------------------------------------------------------------- /data/build.gradle: -------------------------------------------------------------------------------- 1 | plugins { 2 | id 'com.android.library' 3 | id 'org.jetbrains.kotlin.android' 4 | id 'dagger.hilt.android.plugin' 5 | id 'kotlin-kapt' 6 | id 'kotlinx-serialization' 7 | } 8 | 9 | android { 10 | compileSdk 32 11 | 12 | defaultConfig { 13 | minSdk 21 14 | targetSdk 32 15 | 16 | testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner" 17 | consumerProguardFiles "consumer-rules.pro" 18 | } 19 | 20 | buildTypes { 21 | release { 22 | minifyEnabled false 23 | proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro' 24 | } 25 | } 26 | compileOptions { 27 | sourceCompatibility JavaVersion.VERSION_1_8 28 | targetCompatibility JavaVersion.VERSION_1_8 29 | } 30 | kotlinOptions { 31 | jvmTarget = '1.8' 32 | } 33 | } 34 | 35 | dependencies { 36 | implementation project(":domain") 37 | 38 | implementation "com.google.dagger:hilt-android:2.40.5" 39 | kapt "com.google.dagger:hilt-compiler:2.40.5" 40 | 41 | implementation 'io.ktor:ktor-client-android:2.0.1' 42 | implementation 'io.ktor:ktor-client-logging-jvm:2.0.1' 43 | implementation "io.ktor:ktor-serialization-kotlinx-json:2.0.1" 44 | implementation "io.ktor:ktor-client-content-negotiation:2.0.1" 45 | 46 | implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.6.1") 47 | implementation("org.jetbrains.kotlinx:kotlinx-coroutines-android:1.6.1") 48 | 49 | implementation("androidx.room:room-runtime:2.4.2") 50 | kapt("androidx.room:room-compiler:2.4.2") 51 | implementation "androidx.room:room-ktx:2.4.2" 52 | implementation("androidx.room:room-paging:2.4.2") 53 | implementation "androidx.datastore:datastore-preferences:1.0.0" 54 | 55 | testImplementation 'junit:junit:4.13.2' 56 | androidTestImplementation 'androidx.test.ext:junit:1.1.3' 57 | androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0' 58 | } -------------------------------------------------------------------------------- /app/src/main/java/com/currency/currencyconvertermm/features/currencyconverter/composables/common/AmountTextField.kt: -------------------------------------------------------------------------------- 1 | package com.currency.currencyconvertermm.features.currencyconverter.composables.common 2 | 3 | import androidx.compose.foundation.layout.fillMaxWidth 4 | import androidx.compose.foundation.text.KeyboardOptions 5 | import androidx.compose.material.Text 6 | import androidx.compose.material.TextField 7 | import androidx.compose.runtime.Composable 8 | import androidx.compose.ui.Modifier 9 | import androidx.compose.ui.res.stringResource 10 | import androidx.compose.ui.text.input.KeyboardType 11 | import androidx.compose.ui.text.style.TextAlign 12 | import com.currency.currencyconvertermm.R 13 | 14 | @Composable 15 | fun CurrencyTextField( 16 | fieldValue: String, 17 | onChange: (String) -> Unit, 18 | modifier: Modifier = Modifier 19 | ) { 20 | TextField( 21 | value = fieldValue, 22 | onValueChange = { newValue -> 23 | onChange(getValidatedNumber(newValue)) 24 | }, 25 | leadingIcon = { 26 | Text(text = "$") 27 | }, 28 | trailingIcon = { 29 | Text( 30 | text = "", 31 | ) 32 | }, 33 | placeholder = { 34 | Text( 35 | text = stringResource(R.string.enter_amount), 36 | textAlign = TextAlign.Start, 37 | modifier = Modifier.fillMaxWidth() 38 | ) 39 | }, 40 | singleLine = true, 41 | maxLines = 1, 42 | modifier = modifier, keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Decimal) 43 | ) 44 | } 45 | 46 | 47 | fun getValidatedNumber(text: String): String { 48 | // Start by filtering out unwanted characters like commas and multiple decimals 49 | val filteredChars = text.filterIndexed { index, c -> 50 | c in "0123456789" || // Take all digits 51 | (c == '.' && text.indexOf('.') == index) // Take only the first decimal 52 | } 53 | return filteredChars 54 | } -------------------------------------------------------------------------------- /app/src/main/java/com/currency/currencyconvertermm/NetworkInfoProviderImpl.kt: -------------------------------------------------------------------------------- 1 | package com.currency.currencyconvertermm 2 | 3 | import android.net.ConnectivityManager 4 | import android.net.Network 5 | import android.net.NetworkCapabilities 6 | import android.net.NetworkRequest 7 | import com.currency.domain.NetworkInfoProvider 8 | import kotlinx.coroutines.channels.awaitClose 9 | import kotlinx.coroutines.flow.Flow 10 | import kotlinx.coroutines.flow.callbackFlow 11 | import javax.inject.Inject 12 | 13 | class NetworkInfoProviderImpl @Inject constructor(private val connectivityManager: ConnectivityManager) : 14 | NetworkInfoProvider { 15 | 16 | override fun hasNetwork(): Boolean { 17 | val caps = connectivityManager.getNetworkCapabilities(connectivityManager.activeNetwork) 18 | return caps?.hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET) == true 19 | } 20 | 21 | override fun listenToChanges(): Flow { 22 | return callbackFlow { 23 | val networkCallback = object : ConnectivityManager.NetworkCallback() { 24 | // network is available for use 25 | override fun onAvailable(network: Network) { 26 | super.onAvailable(network) 27 | this@callbackFlow.trySend(true) 28 | } 29 | 30 | // lost network connection 31 | override fun onLost(network: Network) { 32 | super.onLost(network) 33 | this@callbackFlow.trySend(false) 34 | } 35 | } 36 | connectivityManager.requestNetwork( 37 | NetworkRequest.Builder() 38 | .addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET) 39 | .addTransportType(NetworkCapabilities.TRANSPORT_WIFI) 40 | .addTransportType(NetworkCapabilities.TRANSPORT_CELLULAR) 41 | .build(), networkCallback 42 | ) 43 | this.awaitClose { 44 | connectivityManager.unregisterNetworkCallback(networkCallback) 45 | } 46 | } 47 | 48 | } 49 | 50 | } 51 | -------------------------------------------------------------------------------- /app/src/main/java/com/currency/currencyconvertermm/features/currencyconverter/composables/common/CurrencyAutoComplete.kt: -------------------------------------------------------------------------------- 1 | package com.currency.currencyconvertermm.features.currencyconverter.composables.common 2 | 3 | import androidx.compose.foundation.layout.fillMaxWidth 4 | import androidx.compose.foundation.text.KeyboardActions 5 | import androidx.compose.foundation.text.KeyboardOptions 6 | import androidx.compose.material.* 7 | import androidx.compose.material.icons.Icons 8 | import androidx.compose.material.icons.filled.Close 9 | import androidx.compose.runtime.* 10 | import androidx.compose.ui.Modifier 11 | import androidx.compose.ui.focus.onFocusChanged 12 | import androidx.compose.ui.text.input.ImeAction 13 | import androidx.compose.ui.text.input.KeyboardType 14 | 15 | @Composable 16 | fun CurrencyAutoComplete( 17 | modifier: Modifier = Modifier, 18 | query: String, 19 | label: String, 20 | isReadOnly:Boolean, 21 | onDoneActionClick: () -> Unit = {}, 22 | onClearClick: () -> Unit = {}, 23 | onQueryChanged: (String) -> Unit 24 | ) { 25 | var showClearButton by remember { mutableStateOf(false) } 26 | 27 | LaunchedEffect(key1 = isReadOnly, block = { 28 | showClearButton = !isReadOnly 29 | }) 30 | 31 | TextField( 32 | modifier = modifier 33 | .fillMaxWidth() 34 | .onFocusChanged { focusState -> 35 | showClearButton = (focusState.isFocused) 36 | }, 37 | value = query, 38 | onValueChange = onQueryChanged, 39 | placeholder = { Text(text = label) }, 40 | textStyle = MaterialTheme.typography.subtitle1, 41 | singleLine = true, 42 | trailingIcon = { 43 | if (showClearButton) { 44 | IconButton(onClick = { onClearClick() }) { 45 | Icon(imageVector = Icons.Filled.Close, contentDescription = "Clear") 46 | } 47 | } 48 | 49 | }, 50 | keyboardActions = KeyboardActions(onDone = { 51 | onDoneActionClick() 52 | }), 53 | keyboardOptions = KeyboardOptions( 54 | imeAction = ImeAction.Done, 55 | keyboardType = KeyboardType.Text 56 | ), readOnly = isReadOnly 57 | ) 58 | } -------------------------------------------------------------------------------- /app/src/main/java/com/currency/currencyconvertermm/features/currencyconverter/composables/RatesGridView.kt: -------------------------------------------------------------------------------- 1 | package com.currency.currencyconvertermm.features.currencyconverter.composables 2 | 3 | import androidx.compose.foundation.layout.padding 4 | import androidx.compose.foundation.lazy.LazyColumn 5 | import androidx.compose.foundation.lazy.items 6 | import androidx.compose.material.ExperimentalMaterialApi 7 | import androidx.compose.material.ListItem 8 | import androidx.compose.material.Text 9 | import androidx.compose.runtime.Composable 10 | import androidx.compose.runtime.collectAsState 11 | import androidx.compose.runtime.getValue 12 | import androidx.compose.ui.Modifier 13 | import androidx.compose.ui.text.font.FontWeight 14 | import androidx.compose.ui.unit.dp 15 | import androidx.paging.compose.collectAsLazyPagingItems 16 | import com.currency.currencyconvertermm.features.currencyconverter.CurrencyConverterVM 17 | import com.currency.currencyconvertermm.ui.theme.Typography 18 | import com.currency.domain.models.DMLatestRate 19 | 20 | @Composable 21 | fun RatesView(viewModel: CurrencyConverterVM) { 22 | val ratesFlow by viewModel.latestRatesState.collectAsState() 23 | val rates by ratesFlow.collectAsState(initial = emptyList()) 24 | val amount by viewModel.amountForConversion.collectAsState() 25 | LazyColumn(content = { 26 | items(rates) { rate -> 27 | RateView(rate, amount) 28 | } 29 | }) 30 | } 31 | 32 | @OptIn(ExperimentalMaterialApi::class) 33 | @Composable 34 | fun RateView(dmLatestRate: DMLatestRate?, amount: String) { 35 | dmLatestRate?.let { 36 | ListItem(text = { 37 | Text( 38 | text = "Rate: " + it.rate.toString(), 39 | style = Typography.subtitle2.copy(fontWeight = FontWeight.Normal), 40 | modifier = Modifier.padding(4.dp) 41 | ) 42 | }, secondaryText = { 43 | Text( 44 | text = "Converted: ${it.name} to " + it.calculatedRate(amount.toDoubleOrNull() ?: 0.0).toString(), 45 | style = Typography.subtitle2.copy(fontWeight = FontWeight.Normal), 46 | modifier = Modifier.padding(4.dp) 47 | ) 48 | 49 | }, trailing = { 50 | Text( 51 | text = it.currency, 52 | style = Typography.subtitle1.copy(fontWeight = FontWeight.Bold), 53 | modifier = Modifier.padding(4.dp) 54 | ) 55 | }) 56 | } 57 | } 58 | -------------------------------------------------------------------------------- /app/src/test/java/com/currency/currencyconvertermm/FakeCurrenciesLocalSource.kt: -------------------------------------------------------------------------------- 1 | package com.currency.currencyconvertermm 2 | 3 | import com.currency.domain.CurrenciesLocalSource 4 | import com.currency.domain.models.DMCurrency 5 | import com.currency.domain.models.DMLatestRate 6 | import kotlinx.coroutines.flow.Flow 7 | import kotlinx.coroutines.flow.flowOf 8 | import java.util.* 9 | 10 | 11 | data class FakeCurrencyTable( 12 | var currency: String, 13 | var rate: Double, 14 | val calculatedRate: Double? = null, 15 | val name: String 16 | ) 17 | 18 | class FakeCurrenciesLocalSource : CurrenciesLocalSource { 19 | 20 | private val currenciesFakeTable = hashSetOf() 21 | 22 | override fun fetchLocalRates( 23 | searchKey: String?, 24 | input: Double 25 | ): Flow> { 26 | return flowOf(currenciesFakeTable.map { 27 | DMLatestRate( 28 | currency = it.currency, 29 | rate = it.rate, name = it.name 30 | ) 31 | }) 32 | } 33 | 34 | override suspend fun saveLatestRates(rates: Map?) { 35 | currenciesFakeTable.forEach { fake -> 36 | rates?.entries?.forEach { 37 | if (it.key == fake.currency) { 38 | fake.rate = it.value 39 | fake.currency = it.key 40 | } 41 | } 42 | } 43 | } 44 | 45 | override suspend fun saveCurrenciesLocally(currencies: Map) { 46 | currencies.entries.forEach { (key, value) -> 47 | currenciesFakeTable.add( 48 | FakeCurrencyTable( 49 | currency = key, 50 | rate = 0.0, 51 | calculatedRate = 0.0, 52 | name = value 53 | ) 54 | ) 55 | } 56 | } 57 | 58 | override fun fetchLocalCurrencies(searchKey: String?): Flow> { 59 | return flowOf(currenciesFakeTable.map { 60 | DMCurrency( 61 | currency = it.currency, 62 | name = it.name 63 | ) 64 | }) 65 | } 66 | 67 | override suspend fun canFetchCurrencies(): Boolean { 68 | return true 69 | } 70 | 71 | override suspend fun canFetchLatestRates(): Boolean { 72 | return true 73 | } 74 | 75 | override suspend fun latestRatesFetchLastTime(): Date? { 76 | return Date() 77 | } 78 | 79 | } 80 | -------------------------------------------------------------------------------- /gradlew.bat: -------------------------------------------------------------------------------- 1 | @rem 2 | @rem Copyright 2015 the original author or authors. 3 | @rem 4 | @rem Licensed under the Apache License, Version 2.0 (the "License"); 5 | @rem you may not use this file except in compliance with the License. 6 | @rem You may obtain a copy of the License at 7 | @rem 8 | @rem https://www.apache.org/licenses/LICENSE-2.0 9 | @rem 10 | @rem Unless required by applicable law or agreed to in writing, software 11 | @rem distributed under the License is distributed on an "AS IS" BASIS, 12 | @rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | @rem See the License for the specific language governing permissions and 14 | @rem limitations under the License. 15 | @rem 16 | 17 | @if "%DEBUG%" == "" @echo off 18 | @rem ########################################################################## 19 | @rem 20 | @rem Gradle startup script for Windows 21 | @rem 22 | @rem ########################################################################## 23 | 24 | @rem Set local scope for the variables with windows NT shell 25 | if "%OS%"=="Windows_NT" setlocal 26 | 27 | set DIRNAME=%~dp0 28 | if "%DIRNAME%" == "" set DIRNAME=. 29 | set APP_BASE_NAME=%~n0 30 | set APP_HOME=%DIRNAME% 31 | 32 | @rem Resolve any "." and ".." in APP_HOME to make it shorter. 33 | for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi 34 | 35 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 36 | set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" 37 | 38 | @rem Find java.exe 39 | if defined JAVA_HOME goto findJavaFromJavaHome 40 | 41 | set JAVA_EXE=java.exe 42 | %JAVA_EXE% -version >NUL 2>&1 43 | if "%ERRORLEVEL%" == "0" goto execute 44 | 45 | echo. 46 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 47 | echo. 48 | echo Please set the JAVA_HOME variable in your environment to match the 49 | echo location of your Java installation. 50 | 51 | goto fail 52 | 53 | :findJavaFromJavaHome 54 | set JAVA_HOME=%JAVA_HOME:"=% 55 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe 56 | 57 | if exist "%JAVA_EXE%" goto execute 58 | 59 | echo. 60 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 61 | echo. 62 | echo Please set the JAVA_HOME variable in your environment to match the 63 | echo location of your Java installation. 64 | 65 | goto fail 66 | 67 | :execute 68 | @rem Setup the command line 69 | 70 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 71 | 72 | 73 | @rem Execute Gradle 74 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %* 75 | 76 | :end 77 | @rem End local scope for the variables with windows NT shell 78 | if "%ERRORLEVEL%"=="0" goto mainEnd 79 | 80 | :fail 81 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 82 | rem the _cmd.exe /c_ return code! 83 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 84 | exit /b 1 85 | 86 | :mainEnd 87 | if "%OS%"=="Windows_NT" endlocal 88 | 89 | :omega 90 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | plugins { 2 | id 'com.android.application' 3 | id 'org.jetbrains.kotlin.android' 4 | id 'kotlin-kapt' 5 | id 'dagger.hilt.android.plugin' 6 | id 'kotlinx-serialization' 7 | 8 | } 9 | 10 | android { 11 | compileSdk 32 12 | 13 | defaultConfig { 14 | applicationId "com.mutualmobile.currencyconvertermm" 15 | minSdk 26 16 | targetSdk 32 17 | versionCode 1 18 | versionName "1.0" 19 | 20 | testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner" 21 | vectorDrawables { 22 | useSupportLibrary true 23 | } 24 | } 25 | 26 | buildTypes { 27 | release { 28 | minifyEnabled false 29 | proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro' 30 | } 31 | } 32 | compileOptions { 33 | sourceCompatibility JavaVersion.VERSION_1_8 34 | targetCompatibility JavaVersion.VERSION_1_8 35 | } 36 | kotlinOptions { 37 | jvmTarget = '1.8' 38 | } 39 | buildFeatures { 40 | compose true 41 | } 42 | composeOptions { 43 | kotlinCompilerExtensionVersion compose_version 44 | } 45 | packagingOptions { 46 | resources { 47 | excludes += '/META-INF/{AL2.0,LGPL2.1}' 48 | } 49 | } 50 | } 51 | 52 | dependencies { 53 | implementation project(":domain") 54 | implementation project(":data") 55 | 56 | implementation "com.google.dagger:hilt-android:2.40.5" 57 | implementation 'androidx.test:core-ktx:1.4.0' 58 | implementation 'androidx.test.ext:junit-ktx:1.1.3' 59 | kapt "com.google.dagger:hilt-compiler:2.40.5" 60 | def activity_version = "1.4.0" 61 | 62 | implementation "androidx.activity:activity-ktx:$activity_version" 63 | 64 | api 'io.ktor:ktor-client-android:2.0.1' 65 | api 'io.ktor:ktor-client-logging-jvm:2.0.1' 66 | 67 | api("androidx.room:room-runtime:2.4.2") 68 | kapt("androidx.room:room-compiler:2.4.2") 69 | api "androidx.room:room-ktx:2.4.2" 70 | api("androidx.room:room-paging:2.4.2") 71 | implementation("androidx.paging:paging-compose:1.0.0-alpha15") 72 | 73 | def work_version = "2.7.1" 74 | implementation "androidx.work:work-runtime-ktx:$work_version" 75 | implementation 'androidx.hilt:hilt-work:1.0.0' 76 | kapt 'androidx.hilt:hilt-compiler:1.0.0' 77 | 78 | 79 | implementation 'androidx.core:core-ktx:1.8.0' 80 | implementation "androidx.compose.ui:ui:$compose_version" 81 | implementation "androidx.compose.material:material:$compose_version" 82 | implementation "androidx.compose.ui:ui-tooling-preview:$compose_version" 83 | implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.4.1' 84 | implementation 'androidx.activity:activity-compose:1.4.0' 85 | 86 | testImplementation "io.mockk:mockk:1.12.0" 87 | testImplementation "org.jetbrains.kotlinx:kotlinx-coroutines-test:1.6.1" 88 | testImplementation "app.cash.turbine:turbine:0.7.0" 89 | 90 | androidTestImplementation "org.jetbrains.kotlinx:kotlinx-coroutines-test:1.6.1" 91 | androidTestImplementation "app.cash.turbine:turbine:0.7.0" 92 | 93 | testImplementation 'junit:junit:4.13.2' 94 | implementation "androidx.datastore:datastore-preferences:1.0.0" 95 | 96 | androidTestImplementation 'androidx.test.ext:junit:1.1.3' 97 | androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0' 98 | androidTestImplementation "androidx.test:runner:1.4.0" 99 | androidTestImplementation "androidx.test:rules:1.4.0" 100 | androidTestImplementation "androidx.compose.ui:ui-test-junit4:$compose_version" 101 | debugImplementation("androidx.compose.ui:ui-test-manifest:$compose_version") 102 | 103 | debugImplementation "androidx.compose.ui:ui-tooling:$compose_version" 104 | debugImplementation "androidx.compose.ui:ui-test-manifest:$compose_version" 105 | } -------------------------------------------------------------------------------- /data/src/main/java/com/paypay/data/local/CurrenciesLocalSourceImpl.kt: -------------------------------------------------------------------------------- 1 | package com.mm.data.local 2 | 3 | import androidx.datastore.core.DataStore 4 | import androidx.datastore.preferences.core.Preferences 5 | import androidx.datastore.preferences.core.edit 6 | import androidx.datastore.preferences.core.intPreferencesKey 7 | import androidx.datastore.preferences.core.longPreferencesKey 8 | import androidx.paging.Pager 9 | import androidx.paging.PagingConfig 10 | import androidx.paging.PagingData 11 | import androidx.paging.map 12 | import com.currency.domain.CurrenciesLocalSource 13 | import com.currency.domain.CurrencyConverter 14 | import com.currency.domain.CurrencyConverter.CURRENCIES_KEY 15 | import com.currency.domain.models.DMCurrency 16 | import com.currency.domain.models.DMLatestRate 17 | import com.mm.data.local.entities.LocalCurrency 18 | import kotlinx.coroutines.flow.Flow 19 | import kotlinx.coroutines.flow.firstOrNull 20 | import kotlinx.coroutines.flow.map 21 | import kotlinx.coroutines.flow.mapLatest 22 | import kotlinx.coroutines.withContext 23 | import java.util.* 24 | import java.util.concurrent.TimeUnit 25 | import javax.inject.Inject 26 | import kotlin.coroutines.CoroutineContext 27 | 28 | class CurrenciesLocalSourceImpl @Inject constructor( 29 | private val ccDatabase: CCDatabase, 30 | private val coroutineContext: CoroutineContext, 31 | private val dataStore: DataStore 32 | ) : CurrenciesLocalSource { 33 | private val currenciesTime = longPreferencesKey(CURRENCIES_KEY) 34 | private val latestPricesKey = longPreferencesKey(CurrencyConverter.LATEST_PRICES_KEY) 35 | 36 | override suspend fun canFetchCurrencies(): Boolean { 37 | val time = dataStore.data.map { preferences -> 38 | preferences[currenciesTime] 39 | }.firstOrNull() 40 | return time?.let { 41 | val savedTime = TimeUnit.MILLISECONDS.toMinutes(it.times(1000)) 42 | val nowTime = TimeUnit.MILLISECONDS.toMinutes(System.currentTimeMillis()) 43 | nowTime.minus(savedTime) > 30 44 | } ?: kotlin.run { 45 | true 46 | } 47 | } 48 | 49 | override suspend fun canFetchLatestRates(): Boolean { 50 | val time = dataStore.data.map { preferences -> 51 | preferences[latestPricesKey] 52 | }.firstOrNull() 53 | return time?.let { 54 | val savedTime = TimeUnit.MILLISECONDS.toMinutes(it.times(1000)) 55 | val nowTime = TimeUnit.MILLISECONDS.toMinutes(System.currentTimeMillis()) 56 | nowTime.minus(savedTime) > 30 57 | } ?: kotlin.run { 58 | true 59 | } 60 | } 61 | 62 | override suspend fun latestRatesFetchLastTime(): Date? { 63 | val time = dataStore.data.map { preferences -> 64 | preferences[latestPricesKey] 65 | }.firstOrNull() 66 | return time?.let { 67 | Date(it.times(1000)) 68 | } ?: kotlin.run { 69 | null 70 | } 71 | } 72 | 73 | override fun fetchLocalCurrencies(searchKey: String?): Flow> { 74 | val data = searchKey?.takeIf { it.isNotEmpty() }?.let { 75 | ccDatabase.currenciesDao().currenciesByKey("%${searchKey}%") 76 | } ?: run { 77 | ccDatabase.currenciesDao().currenciesPaginated() 78 | } 79 | 80 | return data.mapLatest { 81 | it.map { DMCurrency(it.currency, it.name) } 82 | } 83 | } 84 | 85 | override fun fetchLocalRates(searchKey: String?, input: Double): Flow> { 86 | val data = searchKey?.takeIf { it.isNotEmpty() }?.let { 87 | ccDatabase.currenciesDao().currenciesByKey("%${searchKey}%") 88 | } ?: run { 89 | ccDatabase.currenciesDao().currenciesPaginated() 90 | } 91 | return data.mapLatest { 92 | it.map { 93 | DMLatestRate( 94 | it.currency, 95 | it.rate ?: 0.0, name = it.name 96 | ) 97 | } 98 | } 99 | } 100 | 101 | override suspend fun saveCurrenciesLocally(currencies: Map) { 102 | withContext(coroutineContext) { 103 | ccDatabase.currenciesDao() 104 | .insertAll(currencies.map { LocalCurrency(it.key, it.value) }) 105 | dataStore.edit { settings -> 106 | settings[currenciesTime] = System.currentTimeMillis() / 1000 107 | } 108 | } 109 | 110 | } 111 | 112 | override suspend fun saveLatestRates(rates: Map?) { 113 | withContext(coroutineContext) { 114 | rates?.entries?.forEach { (key, rate) -> 115 | ccDatabase.currenciesDao().updateCurrencyRates(key, rate) 116 | } 117 | dataStore.edit { settings -> 118 | settings[latestPricesKey] = System.currentTimeMillis() / 1000 119 | } 120 | } 121 | 122 | } 123 | } -------------------------------------------------------------------------------- /app/src/androidTest/java/com/currency/currencyconvertermm/CurrencyConversionComposeUITests.kt: -------------------------------------------------------------------------------- 1 | package com.currency.currencyconvertermm 2 | 3 | import android.content.Context 4 | import androidx.activity.viewModels 5 | import androidx.compose.ui.test.* 6 | import androidx.compose.ui.test.junit4.createComposeRule 7 | import androidx.datastore.preferences.core.PreferenceDataStoreFactory 8 | import androidx.datastore.preferences.preferencesDataStoreFile 9 | import androidx.room.Room 10 | import androidx.test.core.app.ApplicationProvider 11 | import androidx.test.ext.junit.runners.AndroidJUnit4 12 | import androidx.test.platform.app.InstrumentationRegistry 13 | import com.currency.currencyconvertermm.features.currencyconverter.CurrencyConverterVM 14 | import com.currency.currencyconvertermm.features.currencyconverter.composables.UICurrencyConverter 15 | import com.currency.currencyconvertermm.ui.theme.CurrencyConvertermmTheme 16 | import com.currency.domain.usecase.UseCaseFetchCurrencies 17 | import com.currency.domain.usecase.UseCaseFetchLatestPrices 18 | import com.currency.domain.usecase.UseCaseLoadCurrenciesDataFromNetwork 19 | import com.currency.domain.usecase.UseCaseLoadLatestPricesFromNetwork 20 | import com.mm.data.local.CCDatabase 21 | import com.mm.data.local.CurrenciesLocalSourceImpl 22 | import com.mm.data.network.CurrencyAPI 23 | import com.mm.data.repo.CurrenciesRepositoryImpl 24 | import com.mm.data.repo.LatestPricesRepositoryImpl 25 | import kotlinx.coroutines.Dispatchers 26 | import kotlinx.coroutines.ExperimentalCoroutinesApi 27 | import kotlinx.coroutines.delay 28 | import kotlinx.coroutines.launch 29 | import kotlinx.coroutines.test.StandardTestDispatcher 30 | import kotlinx.coroutines.test.resetMain 31 | import kotlinx.coroutines.test.runTest 32 | import kotlinx.coroutines.test.setMain 33 | import org.junit.After 34 | import org.junit.Before 35 | import org.junit.Rule 36 | import org.junit.Test 37 | import org.junit.runner.RunWith 38 | 39 | @RunWith(AndroidJUnit4::class) 40 | class CurrencyConversionComposeUITests { 41 | 42 | private var currencyAPI: CurrencyAPI = FakeCurrencyAPI() 43 | private val context = ApplicationProvider.getApplicationContext() 44 | 45 | private var networkInfoProvider = FakeNetworkInfoProvider() 46 | private val database = Room.inMemoryDatabaseBuilder(context, CCDatabase::class.java).build() 47 | 48 | val ds = PreferenceDataStoreFactory.create() { 49 | InstrumentationRegistry.getInstrumentation().targetContext.preferencesDataStoreFile( 50 | "test-preferences-file" 51 | ) 52 | } 53 | 54 | private val currenciesLocalSource = CurrenciesLocalSourceImpl( 55 | database,Dispatchers.IO,ds 56 | ) 57 | 58 | private val latestPricesRepository by lazy { 59 | LatestPricesRepositoryImpl( 60 | Dispatchers.Main, 61 | currencyAPI, currenciesLocalSource 62 | ) 63 | } 64 | private val currenciesRepository by lazy { 65 | CurrenciesRepositoryImpl( 66 | Dispatchers.Main, 67 | currencyAPI, currenciesLocalSource 68 | ) 69 | } 70 | 71 | private val useCaseFetchLatestPrices by lazy { UseCaseFetchLatestPrices(latestPricesRepository) } 72 | private val useCaseFetchCurrencies by lazy { 73 | UseCaseFetchCurrencies(currenciesRepository) 74 | } 75 | 76 | 77 | private val useCaseLoadCurrenciesDataFromNetwork by lazy { 78 | UseCaseLoadCurrenciesDataFromNetwork( 79 | currenciesRepository 80 | ) 81 | } 82 | 83 | private val useCaseLoadLatestPricesFromNetwork by lazy { 84 | UseCaseLoadLatestPricesFromNetwork(latestPricesRepository) 85 | } 86 | 87 | private lateinit var currencyConverterVM: CurrencyConverterVM 88 | 89 | @get:Rule 90 | val composeTestRule = createComposeRule() 91 | 92 | @Test 93 | fun testConversions() { 94 | // Start the app 95 | networkInfoProvider.networkSwitch(true) 96 | 97 | currencyConverterVM = CurrencyConverterVM( 98 | useCaseLoadCurrenciesDataFromNetwork, 99 | useCaseLoadLatestPricesFromNetwork, 100 | useCaseFetchLatestPrices, 101 | useCaseFetchCurrencies, 102 | networkInfoProvider 103 | ) 104 | 105 | composeTestRule.setContent { 106 | CurrencyConvertermmTheme { 107 | UICurrencyConverter(currencyConverterVM) 108 | } 109 | } 110 | 111 | composeTestRule.onNodeWithText(context.getString(R.string.converter_select_currency)) 112 | .performTextInput("INR") 113 | 114 | composeTestRule.onNodeWithText("Indian Rupee").performClick() 115 | 116 | composeTestRule.onNodeWithText("Rate: 75.0").assertIsDisplayed() 117 | 118 | composeTestRule.onNodeWithText(context.getString(R.string.enter_amount)) 119 | .performTextInput("50.0") 120 | 121 | composeTestRule.onNodeWithText("Converted: Indian Rupee to 3750.0") 122 | .assertIsDisplayed() 123 | 124 | 125 | } 126 | } -------------------------------------------------------------------------------- /app/src/main/java/com/currency/currencyconvertermm/features/currencyconverter/CurrencyConverterVM.kt: -------------------------------------------------------------------------------- 1 | package com.currency.currencyconvertermm.features.currencyconverter 2 | 3 | import androidx.lifecycle.ViewModel 4 | import androidx.lifecycle.viewModelScope 5 | import com.currency.currencyconvertermm.features.currencyconverter.exceptions.NetworkNotAvailableException 6 | import com.currency.domain.NetworkInfoProvider 7 | import com.currency.domain.models.DMCurrency 8 | import com.currency.domain.models.DMLatestRate 9 | import com.currency.domain.usecase.UseCaseFetchCurrencies 10 | import com.currency.domain.usecase.UseCaseFetchLatestPrices 11 | import com.currency.domain.usecase.UseCaseLoadCurrenciesDataFromNetwork 12 | import com.currency.domain.usecase.UseCaseLoadLatestPricesFromNetwork 13 | import dagger.hilt.android.lifecycle.HiltViewModel 14 | import kotlinx.coroutines.CoroutineExceptionHandler 15 | import kotlinx.coroutines.flow.* 16 | import kotlinx.coroutines.launch 17 | import java.util.* 18 | import javax.inject.Inject 19 | 20 | @HiltViewModel 21 | class CurrencyConverterVM @Inject constructor( 22 | private val useCaseLoadCurrenciesDataFromNetwork: UseCaseLoadCurrenciesDataFromNetwork, 23 | private val useCaseLoadLatestPricesFromNetwork: UseCaseLoadLatestPricesFromNetwork, 24 | private val useCaseFetchLatestPrices: UseCaseFetchLatestPrices, 25 | private val useCaseFetchCurrencies: UseCaseFetchCurrencies, 26 | private val networkInfoProvider: NetworkInfoProvider 27 | ) : 28 | ViewModel() { 29 | 30 | var viewState = MutableStateFlow(ViewState.Empty) 31 | private set 32 | 33 | var selectedCurrency = MutableStateFlow?>(null) 34 | var searchCurrency = MutableStateFlow("") 35 | var amountForConversion = MutableStateFlow("") 36 | 37 | private val _currenciesState = MutableStateFlow>>(emptyFlow()) 38 | val currenciesState = _currenciesState.asStateFlow() 39 | 40 | private var _latestRatesState = MutableStateFlow>>(emptyFlow()) 41 | val latestRatesState = _latestRatesState.asStateFlow() 42 | 43 | private val currenciesException = CoroutineExceptionHandler { _, throwable -> 44 | viewState.value = ViewState.Exception(throwable) 45 | } 46 | 47 | init { 48 | registerNetwork() 49 | forceFetchCurrenciesOnLaunch() 50 | registerOnSearchChangeFlow() 51 | registerOnAmountChangeFlow() 52 | } 53 | 54 | private fun registerNetwork() { 55 | networkInfoProvider.listenToChanges().onEach { 56 | onNetworkAvailable(it) 57 | }.launchIn(viewModelScope) 58 | } 59 | 60 | private fun onNetworkAvailable(available: Boolean?) { 61 | if (available == true) { 62 | // network is available now! Let's refresh the UI 63 | // with latest data if DataState.LoadComplete never encountered ? 64 | if (viewState.value !is ViewState.LoadComplete && viewState.value !is ViewState.Loading) { 65 | forceFetchCurrenciesOnLaunch() 66 | } 67 | } 68 | } 69 | 70 | private fun registerOnSearchChangeFlow() { 71 | searchCurrency.onEach { // on every search keystroke we update the flow 72 | _currenciesState.value = flowFetchCurrencies() 73 | }.launchIn(viewModelScope) 74 | } 75 | 76 | private fun registerOnAmountChangeFlow() { 77 | amountForConversion.onEach { 78 | _latestRatesState.value = flowFetchRates() 79 | }.launchIn(viewModelScope) 80 | } 81 | 82 | 83 | private fun forceFetchCurrenciesOnLaunch() { 84 | if (networkInfoProvider.hasNetwork()) { 85 | viewModelScope.launch(currenciesException) { 86 | // do this in launch 87 | viewState.value = ViewState.Loading 88 | useCaseLoadCurrenciesDataFromNetwork.perform() 89 | val completeDate = useCaseLoadLatestPricesFromNetwork.perform() 90 | viewState.value = ViewState.LoadComplete(completeDate) 91 | } 92 | } else { 93 | viewState.value = 94 | ViewState.Exception(NetworkNotAvailableException("No Network Available!")) 95 | } 96 | } 97 | 98 | private fun flowFetchCurrencies(): Flow> { 99 | return useCaseFetchCurrencies.perform(searchCurrency.value) 100 | } 101 | 102 | private fun flowFetchRates(): Flow> { 103 | return useCaseFetchLatestPrices.perform(amountForConversion.value) 104 | 105 | } 106 | 107 | fun updateCurrency(key: Pair) { 108 | amountForConversion.value = "" 109 | selectedCurrency.value = key 110 | searchCurrency.value = key.second 111 | } 112 | 113 | fun clearCurrency() { 114 | amountForConversion.value = "" 115 | selectedCurrency.value = null 116 | searchCurrency.value = "" 117 | } 118 | 119 | sealed class ViewState { 120 | object Empty : ViewState() 121 | object Loading : ViewState() 122 | data class LoadComplete(val date: Date) : ViewState() 123 | data class Exception(val throwable: Throwable) : ViewState() 124 | } 125 | 126 | } -------------------------------------------------------------------------------- /app/src/main/java/com/currency/currencyconvertermm/features/currencyconverter/composables/CurrencyConverterForm.kt: -------------------------------------------------------------------------------- 1 | package com.currency.currencyconvertermm.features.currencyconverter.composables 2 | 3 | import androidx.compose.animation.AnimatedVisibility 4 | import androidx.compose.foundation.clickable 5 | import androidx.compose.foundation.layout.* 6 | import androidx.compose.material.* 7 | import androidx.compose.runtime.* 8 | import androidx.compose.ui.Alignment 9 | import androidx.compose.ui.ExperimentalComposeUiApi 10 | import androidx.compose.ui.Modifier 11 | import androidx.compose.ui.platform.LocalSoftwareKeyboardController 12 | import androidx.compose.ui.res.stringResource 13 | import androidx.compose.ui.text.font.FontWeight 14 | import androidx.compose.ui.unit.dp 15 | import com.currency.currencyconvertermm.features.currencyconverter.CurrencyConverterVM 16 | import com.currency.currencyconvertermm.R 17 | import com.currency.currencyconvertermm.features.currencyconverter.composables.common.CurrencyAutoComplete 18 | import com.currency.currencyconvertermm.features.currencyconverter.composables.common.CurrencyTextField 19 | import com.currency.currencyconvertermm.ui.theme.Typography 20 | 21 | @ExperimentalMaterialApi 22 | @Composable 23 | fun CurrencyConverterForm(modifier: Modifier = Modifier, viewModel: CurrencyConverterVM) { 24 | val amount by viewModel.amountForConversion.collectAsState() 25 | val selectedCurrency by viewModel.selectedCurrency.collectAsState() 26 | val dataState by viewModel.viewState.collectAsState() 27 | Box(modifier) { 28 | Column(horizontalAlignment = Alignment.CenterHorizontally) { 29 | when (dataState) { 30 | is CurrencyConverterVM.ViewState.Loading -> { 31 | Text( 32 | style = Typography.subtitle1.copy( 33 | fontWeight = FontWeight.Bold 34 | ), 35 | text = "Refreshing Rates...", modifier = Modifier 36 | .padding(12.dp) 37 | ) 38 | } 39 | is CurrencyConverterVM.ViewState.Exception -> { 40 | Text( 41 | style = Typography.subtitle1.copy( 42 | fontWeight = FontWeight.Bold 43 | ), 44 | text = "Failed: ${(dataState as CurrencyConverterVM.ViewState.Exception).throwable.localizedMessage}", 45 | modifier = Modifier 46 | .padding(12.dp) 47 | ) 48 | } 49 | CurrencyConverterVM.ViewState.Empty -> { 50 | Text( 51 | style = Typography.subtitle1.copy( 52 | fontWeight = FontWeight.Bold 53 | ), 54 | text = "Nothing to Show Here!", modifier = Modifier 55 | .padding(12.dp) 56 | ) 57 | } 58 | is CurrencyConverterVM.ViewState.LoadComplete -> { 59 | Text( 60 | style = Typography.subtitle1.copy( 61 | fontWeight = FontWeight.Bold 62 | ), modifier = Modifier 63 | .padding(12.dp), 64 | text = "Rates Updated on, ${(dataState as CurrencyConverterVM.ViewState.LoadComplete).date}" 65 | ) 66 | } 67 | } 68 | CurrenciesSelection( 69 | viewModel, 70 | Modifier 71 | .fillMaxWidth() 72 | .padding(8.dp) 73 | ) 74 | AnimatedVisibility(visible = selectedCurrency != null) { 75 | CurrencyTextField( 76 | fieldValue = amount, onChange = { newAmount -> 77 | viewModel.amountForConversion.value = newAmount 78 | }, modifier = Modifier 79 | .fillMaxWidth() 80 | .padding(8.dp) 81 | ) 82 | } 83 | RatesView(viewModel) 84 | 85 | } 86 | } 87 | } 88 | 89 | @OptIn(ExperimentalComposeUiApi::class) 90 | @ExperimentalMaterialApi 91 | @Composable 92 | fun CurrenciesSelection(viewModel: CurrencyConverterVM, modifier: Modifier = Modifier) { 93 | val controller = LocalSoftwareKeyboardController.current 94 | 95 | val currenciesStateFlow by viewModel.currenciesState.collectAsState() 96 | val currenciesState by currenciesStateFlow.collectAsState(initial = emptyList()) 97 | 98 | val selectedCurrency by viewModel.selectedCurrency.collectAsState() 99 | val searchCurrency by viewModel.searchCurrency.collectAsState() 100 | 101 | Column( 102 | modifier = modifier 103 | .wrapContentSize(Alignment.TopStart) 104 | ) { 105 | selectedCurrency?.let { (key, value) -> 106 | SelectedCurrencyListItem(selectedCurrency, key, value, Modifier.clickable { 107 | viewModel.updateCurrency(Pair(key, value)) 108 | }, onClearCurrency = { 109 | viewModel.clearCurrency() 110 | }) 111 | } ?: run { 112 | CurrencyAutoComplete( 113 | query = searchCurrency, 114 | label = stringResource(R.string.converter_select_currency), 115 | isReadOnly = selectedCurrency != null, 116 | onQueryChanged = { 117 | viewModel.searchCurrency.value = it 118 | }, onDoneActionClick = { 119 | controller?.hide() 120 | }, onClearClick = { 121 | controller?.hide() 122 | }) 123 | CurrencyList( 124 | currenciesState, 125 | ) { pair -> 126 | viewModel.updateCurrency(pair) 127 | 128 | } 129 | } 130 | } 131 | } 132 | -------------------------------------------------------------------------------- /app/src/main/res/drawable/ic_launcher_background.xml: -------------------------------------------------------------------------------- 1 | 2 | 7 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 55 | 60 | 65 | 70 | 75 | 80 | 85 | 90 | 95 | 100 | 105 | 110 | 115 | 120 | 125 | 130 | 135 | 140 | 145 | 150 | 155 | 160 | 165 | 170 | 171 | -------------------------------------------------------------------------------- /gradlew: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env sh 2 | 3 | # 4 | # Copyright 2015 the original author or authors. 5 | # 6 | # Licensed under the Apache License, Version 2.0 (the "License"); 7 | # you may not use this file except in compliance with the License. 8 | # You may obtain a copy of the License at 9 | # 10 | # https://www.apache.org/licenses/LICENSE-2.0 11 | # 12 | # Unless required by applicable law or agreed to in writing, software 13 | # distributed under the License is distributed on an "AS IS" BASIS, 14 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 | # See the License for the specific language governing permissions and 16 | # limitations under the License. 17 | # 18 | 19 | ############################################################################## 20 | ## 21 | ## Gradle start up script for UN*X 22 | ## 23 | ############################################################################## 24 | 25 | # Attempt to set APP_HOME 26 | # Resolve links: $0 may be a link 27 | PRG="$0" 28 | # Need this for relative symlinks. 29 | while [ -h "$PRG" ] ; do 30 | ls=`ls -ld "$PRG"` 31 | link=`expr "$ls" : '.*-> \(.*\)$'` 32 | if expr "$link" : '/.*' > /dev/null; then 33 | PRG="$link" 34 | else 35 | PRG=`dirname "$PRG"`"/$link" 36 | fi 37 | done 38 | SAVED="`pwd`" 39 | cd "`dirname \"$PRG\"`/" >/dev/null 40 | APP_HOME="`pwd -P`" 41 | cd "$SAVED" >/dev/null 42 | 43 | APP_NAME="Gradle" 44 | APP_BASE_NAME=`basename "$0"` 45 | 46 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 47 | DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' 48 | 49 | # Use the maximum available, or set MAX_FD != -1 to use that value. 50 | MAX_FD="maximum" 51 | 52 | warn () { 53 | echo "$*" 54 | } 55 | 56 | die () { 57 | echo 58 | echo "$*" 59 | echo 60 | exit 1 61 | } 62 | 63 | # OS specific support (must be 'true' or 'false'). 64 | cygwin=false 65 | msys=false 66 | darwin=false 67 | nonstop=false 68 | case "`uname`" in 69 | CYGWIN* ) 70 | cygwin=true 71 | ;; 72 | Darwin* ) 73 | darwin=true 74 | ;; 75 | MINGW* ) 76 | msys=true 77 | ;; 78 | NONSTOP* ) 79 | nonstop=true 80 | ;; 81 | esac 82 | 83 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 84 | 85 | 86 | # Determine the Java command to use to start the JVM. 87 | if [ -n "$JAVA_HOME" ] ; then 88 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 89 | # IBM's JDK on AIX uses strange locations for the executables 90 | JAVACMD="$JAVA_HOME/jre/sh/java" 91 | else 92 | JAVACMD="$JAVA_HOME/bin/java" 93 | fi 94 | if [ ! -x "$JAVACMD" ] ; then 95 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 96 | 97 | Please set the JAVA_HOME variable in your environment to match the 98 | location of your Java installation." 99 | fi 100 | else 101 | JAVACMD="java" 102 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 103 | 104 | Please set the JAVA_HOME variable in your environment to match the 105 | location of your Java installation." 106 | fi 107 | 108 | # Increase the maximum file descriptors if we can. 109 | if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then 110 | MAX_FD_LIMIT=`ulimit -H -n` 111 | if [ $? -eq 0 ] ; then 112 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then 113 | MAX_FD="$MAX_FD_LIMIT" 114 | fi 115 | ulimit -n $MAX_FD 116 | if [ $? -ne 0 ] ; then 117 | warn "Could not set maximum file descriptor limit: $MAX_FD" 118 | fi 119 | else 120 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" 121 | fi 122 | fi 123 | 124 | # For Darwin, add options to specify how the application appears in the dock 125 | if $darwin; then 126 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" 127 | fi 128 | 129 | # For Cygwin or MSYS, switch paths to Windows format before running java 130 | if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then 131 | APP_HOME=`cygpath --path --mixed "$APP_HOME"` 132 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` 133 | 134 | JAVACMD=`cygpath --unix "$JAVACMD"` 135 | 136 | # We build the pattern for arguments to be converted via cygpath 137 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` 138 | SEP="" 139 | for dir in $ROOTDIRSRAW ; do 140 | ROOTDIRS="$ROOTDIRS$SEP$dir" 141 | SEP="|" 142 | done 143 | OURCYGPATTERN="(^($ROOTDIRS))" 144 | # Add a user-defined pattern to the cygpath arguments 145 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then 146 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" 147 | fi 148 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 149 | i=0 150 | for arg in "$@" ; do 151 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` 152 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option 153 | 154 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition 155 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` 156 | else 157 | eval `echo args$i`="\"$arg\"" 158 | fi 159 | i=`expr $i + 1` 160 | done 161 | case $i in 162 | 0) set -- ;; 163 | 1) set -- "$args0" ;; 164 | 2) set -- "$args0" "$args1" ;; 165 | 3) set -- "$args0" "$args1" "$args2" ;; 166 | 4) set -- "$args0" "$args1" "$args2" "$args3" ;; 167 | 5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; 168 | 6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; 169 | 7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; 170 | 8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; 171 | 9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; 172 | esac 173 | fi 174 | 175 | # Escape application args 176 | save () { 177 | for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done 178 | echo " " 179 | } 180 | APP_ARGS=`save "$@"` 181 | 182 | # Collect all arguments for the java command, following the shell quoting and substitution rules 183 | eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS" 184 | 185 | exec "$JAVACMD" "$@" 186 | -------------------------------------------------------------------------------- /app/src/androidTest/java/com/currency/currencyconvertermm/CurrencyVMTest.kt: -------------------------------------------------------------------------------- 1 | package com.currency.currencyconvertermm 2 | 3 | import android.content.Context 4 | import androidx.datastore.preferences.core.PreferenceDataStoreFactory 5 | import androidx.datastore.preferences.preferencesDataStoreFile 6 | import androidx.room.Room 7 | import androidx.test.core.app.ApplicationProvider 8 | import androidx.test.ext.junit.runners.AndroidJUnit4 9 | import androidx.test.platform.app.InstrumentationRegistry 10 | import app.cash.turbine.test 11 | import com.currency.currencyconvertermm.features.currencyconverter.CurrencyConverterVM 12 | import com.currency.currencyconvertermm.features.currencyconverter.exceptions.NetworkNotAvailableException 13 | import com.currency.domain.usecase.UseCaseFetchCurrencies 14 | import com.currency.domain.usecase.UseCaseFetchLatestPrices 15 | import com.currency.domain.usecase.UseCaseLoadCurrenciesDataFromNetwork 16 | import com.currency.domain.usecase.UseCaseLoadLatestPricesFromNetwork 17 | import com.mm.data.local.CCDatabase 18 | import com.mm.data.local.CurrenciesLocalSourceImpl 19 | import com.mm.data.network.CurrencyAPI 20 | import com.mm.data.repo.CurrenciesRepositoryImpl 21 | import com.mm.data.repo.LatestPricesRepositoryImpl 22 | import kotlinx.coroutines.* 23 | import kotlinx.coroutines.test.StandardTestDispatcher 24 | import kotlinx.coroutines.test.resetMain 25 | import kotlinx.coroutines.test.runTest 26 | import kotlinx.coroutines.test.setMain 27 | import org.junit.After 28 | import org.junit.Before 29 | import org.junit.Test 30 | import org.junit.runner.RunWith 31 | 32 | @RunWith(AndroidJUnit4::class) 33 | class CurrencyConverterVMShould { 34 | 35 | private var currencyAPI: CurrencyAPI = FakeCurrencyAPI() 36 | private val context = ApplicationProvider.getApplicationContext() 37 | 38 | private var networkInfoProvider = FakeNetworkInfoProvider() 39 | private val database = Room.inMemoryDatabaseBuilder(context, CCDatabase::class.java).build() 40 | 41 | val ds = PreferenceDataStoreFactory.create() { 42 | InstrumentationRegistry.getInstrumentation().targetContext.preferencesDataStoreFile( 43 | "test-preferences-file" 44 | ) 45 | } 46 | 47 | private val currenciesLocalSource = CurrenciesLocalSourceImpl( 48 | database,Dispatchers.IO,ds 49 | ) 50 | 51 | private val latestPricesRepository by lazy { 52 | LatestPricesRepositoryImpl( 53 | Dispatchers.Main, 54 | currencyAPI, currenciesLocalSource 55 | ) 56 | } 57 | private val currenciesRepository by lazy { 58 | CurrenciesRepositoryImpl( 59 | Dispatchers.Main, 60 | currencyAPI, currenciesLocalSource 61 | ) 62 | } 63 | 64 | private val useCaseFetchLatestPrices by lazy { UseCaseFetchLatestPrices(latestPricesRepository) } 65 | private val useCaseFetchCurrencies by lazy { 66 | UseCaseFetchCurrencies(currenciesRepository) 67 | } 68 | 69 | 70 | private val useCaseLoadCurrenciesDataFromNetwork by lazy { 71 | UseCaseLoadCurrenciesDataFromNetwork( 72 | currenciesRepository 73 | ) 74 | } 75 | 76 | private val useCaseLoadLatestPricesFromNetwork by lazy { 77 | UseCaseLoadLatestPricesFromNetwork(latestPricesRepository) 78 | } 79 | 80 | private lateinit var currencyConverterVM: CurrencyConverterVM 81 | 82 | 83 | @OptIn(ExperimentalCoroutinesApi::class) 84 | @Before 85 | fun setUp() { 86 | Dispatchers.setMain(StandardTestDispatcher()) 87 | } 88 | 89 | 90 | @OptIn(ExperimentalCoroutinesApi::class) 91 | @After 92 | fun tearDown() { 93 | Dispatchers.resetMain() 94 | } 95 | 96 | @Test 97 | fun throwNetworkExceptionWhenNetworkNotAvailale() { 98 | runTest { 99 | launch { 100 | networkInfoProvider.networkSwitch(false) 101 | 102 | currencyConverterVM = CurrencyConverterVM( 103 | useCaseLoadCurrenciesDataFromNetwork, 104 | useCaseLoadLatestPricesFromNetwork, 105 | useCaseFetchLatestPrices, 106 | useCaseFetchCurrencies, 107 | networkInfoProvider 108 | ) 109 | 110 | currencyConverterVM.viewState.test { 111 | val firstItem = awaitItem() 112 | assert(firstItem is CurrencyConverterVM.ViewState.Exception && firstItem.throwable is NetworkNotAvailableException) 113 | awaitComplete() 114 | } 115 | } 116 | } 117 | } 118 | 119 | 120 | @OptIn(ExperimentalCoroutinesApi::class) 121 | @Test 122 | fun returnCurrenciesWhenReceivedFromNetworkAndSavedIntoDatabase() { 123 | runTest { 124 | launch { 125 | networkInfoProvider.networkSwitch(true) 126 | 127 | currencyConverterVM = CurrencyConverterVM( 128 | useCaseLoadCurrenciesDataFromNetwork, 129 | useCaseLoadLatestPricesFromNetwork, 130 | useCaseFetchLatestPrices, 131 | useCaseFetchCurrencies, 132 | networkInfoProvider 133 | ) 134 | 135 | currencyConverterVM.viewState.test { 136 | assert(awaitItem() is CurrencyConverterVM.ViewState.Empty) 137 | assert(awaitItem() is CurrencyConverterVM.ViewState.Loading) 138 | val lastComplete = awaitItem() 139 | assert(lastComplete is CurrencyConverterVM.ViewState.LoadComplete) 140 | val dataSet = database.currenciesDao().getAll() 141 | assert(dataSet.isNotEmpty() && dataSet.size == 2) 142 | awaitComplete() 143 | } 144 | } 145 | } 146 | } 147 | 148 | @OptIn(ExperimentalCoroutinesApi::class) 149 | @Test 150 | fun testThatThenUserInputsTheCurrencyWeGeTheCalculatedAmount() { 151 | runTest { 152 | launch { 153 | val amountToConvert = 45.0 154 | 155 | networkInfoProvider.networkSwitch(true) 156 | 157 | currencyConverterVM = CurrencyConverterVM( 158 | useCaseLoadCurrenciesDataFromNetwork, 159 | useCaseLoadLatestPricesFromNetwork, 160 | useCaseFetchLatestPrices, 161 | useCaseFetchCurrencies, 162 | networkInfoProvider 163 | ) 164 | currencyConverterVM.amountForConversion.value = amountToConvert.toString() 165 | delay(10) 166 | currencyConverterVM.latestRatesState.value.test { 167 | val pagingData = awaitItem() 168 | assert(pagingData.size == 2) 169 | assert(pagingData.first().calculatedRate(amountToConvert) == pagingData.first().rate.times(amountToConvert)) 170 | awaitComplete() 171 | } 172 | 173 | } 174 | } 175 | } 176 | } -------------------------------------------------------------------------------- /app/src/test/java/com/currency/currencyconvertermm/CurrencyVMTest.kt: -------------------------------------------------------------------------------- 1 | package com.currency.currencyconvertermm 2 | 3 | import app.cash.turbine.test 4 | import com.currency.currencyconvertermm.features.currencyconverter.CurrencyConverterVM 5 | import com.currency.currencyconvertermm.features.currencyconverter.exceptions.NetworkNotAvailableException 6 | import com.currency.domain.NetworkInfoProvider 7 | import com.currency.domain.usecase.UseCaseFetchCurrencies 8 | import com.currency.domain.usecase.UseCaseFetchLatestPrices 9 | import com.currency.domain.usecase.UseCaseLoadCurrenciesDataFromNetwork 10 | import com.currency.domain.usecase.UseCaseLoadLatestPricesFromNetwork 11 | import com.mm.data.network.CurrencyAPI 12 | import com.mm.data.network.NetLatestRates 13 | import com.mm.data.repo.CurrenciesRepositoryImpl 14 | import com.mm.data.repo.LatestPricesRepositoryImpl 15 | import io.mockk.MockKAnnotations 16 | import io.mockk.coEvery 17 | import io.mockk.every 18 | import io.mockk.impl.annotations.MockK 19 | import kotlinx.coroutines.Dispatchers 20 | import kotlinx.coroutines.ExperimentalCoroutinesApi 21 | import kotlinx.coroutines.delay 22 | import kotlinx.coroutines.flow.emptyFlow 23 | import kotlinx.coroutines.launch 24 | import kotlinx.coroutines.test.StandardTestDispatcher 25 | import kotlinx.coroutines.test.resetMain 26 | import kotlinx.coroutines.test.runTest 27 | import kotlinx.coroutines.test.setMain 28 | import org.junit.After 29 | import org.junit.Before 30 | import org.junit.Test 31 | 32 | class CurrencyConverterVMShould { 33 | 34 | @MockK 35 | lateinit var currencyAPI: CurrencyAPI 36 | 37 | var currenciesLocalSource = FakeCurrenciesLocalSource() 38 | 39 | @MockK 40 | private lateinit var networkInfoProvider: NetworkInfoProvider 41 | 42 | private val latestPricesRepository by lazy { 43 | LatestPricesRepositoryImpl( 44 | Dispatchers.Main, 45 | currencyAPI, currenciesLocalSource 46 | ) 47 | } 48 | private val currenciesRepository by lazy { 49 | CurrenciesRepositoryImpl( 50 | Dispatchers.Main, 51 | currencyAPI, currenciesLocalSource 52 | ) 53 | } 54 | 55 | private val useCaseFetchLatestPrices by lazy { UseCaseFetchLatestPrices(latestPricesRepository) } 56 | private val useCaseFetchCurrencies by lazy { 57 | UseCaseFetchCurrencies(currenciesRepository) 58 | } 59 | 60 | private val useCaseLoadCurrenciesDataFromNetwork by lazy { 61 | UseCaseLoadCurrenciesDataFromNetwork( 62 | currenciesRepository 63 | ) 64 | } 65 | 66 | private val useCaseLoadLatestPricesFromNetwork by lazy { 67 | UseCaseLoadLatestPricesFromNetwork(latestPricesRepository) 68 | } 69 | 70 | private lateinit var currencyConverterVM: CurrencyConverterVM 71 | 72 | 73 | @OptIn(ExperimentalCoroutinesApi::class) 74 | @Before 75 | fun setUp() { 76 | MockKAnnotations.init(this, true) 77 | Dispatchers.setMain(StandardTestDispatcher()) 78 | } 79 | 80 | 81 | @OptIn(ExperimentalCoroutinesApi::class) 82 | @After 83 | fun tearDown() { 84 | Dispatchers.resetMain() 85 | } 86 | 87 | @OptIn(ExperimentalCoroutinesApi::class) 88 | @Test 89 | fun testthatwhennetworkisnotavailableitthrowsnetworkexception() { 90 | runTest { 91 | 92 | launch { 93 | coEvery { currencyAPI.networkFetchCurrencies() } returns hashMapOf().apply { 94 | put("INR", "Indian Rupee") 95 | put("XYZ", "XYZ currency") 96 | } 97 | 98 | coEvery { currencyAPI.networkFetchLatestRates() } returns NetLatestRates(rates = hashMapOf().apply { 99 | put("INR", 75.0) 100 | put("XYZ", 100.0) 101 | }) 102 | 103 | every { 104 | networkInfoProvider.listenToChanges() 105 | } returns emptyFlow() 106 | 107 | every { 108 | networkInfoProvider.hasNetwork() 109 | } returns false 110 | 111 | 112 | 113 | currencyConverterVM = CurrencyConverterVM( 114 | useCaseLoadCurrenciesDataFromNetwork, 115 | useCaseLoadLatestPricesFromNetwork, 116 | useCaseFetchLatestPrices, 117 | useCaseFetchCurrencies, 118 | networkInfoProvider 119 | ) 120 | 121 | currencyConverterVM.viewState.test { 122 | val firstItem = awaitItem() 123 | assert(firstItem is CurrencyConverterVM.ViewState.Exception && firstItem.throwable is NetworkNotAvailableException) 124 | awaitComplete() 125 | } 126 | } 127 | } 128 | } 129 | 130 | 131 | @OptIn(ExperimentalCoroutinesApi::class) 132 | @Test 133 | fun testthatwhennetworkisavailableitreturnscurrenciesintheflow() { 134 | runTest { 135 | launch { 136 | coEvery { currencyAPI.networkFetchCurrencies() } returns hashMapOf().apply { 137 | put("INR", "Indian Rupee") 138 | put("XYZ", "XYZ currency") 139 | } 140 | 141 | coEvery { currencyAPI.networkFetchLatestRates() } returns NetLatestRates(rates = hashMapOf().apply { 142 | put("INR", 75.0) 143 | put("XYZ", 100.0) 144 | }) 145 | 146 | every { 147 | networkInfoProvider.listenToChanges() 148 | } returns emptyFlow() 149 | 150 | every { 151 | networkInfoProvider.hasNetwork() 152 | } returns true 153 | 154 | 155 | 156 | currencyConverterVM = CurrencyConverterVM( 157 | useCaseLoadCurrenciesDataFromNetwork, 158 | useCaseLoadLatestPricesFromNetwork, 159 | useCaseFetchLatestPrices, 160 | useCaseFetchCurrencies, 161 | networkInfoProvider 162 | ) 163 | 164 | currencyConverterVM.viewState.test { 165 | assert(awaitItem() is CurrencyConverterVM.ViewState.Empty) 166 | assert(awaitItem() is CurrencyConverterVM.ViewState.Loading) 167 | val lastComplete = awaitItem() 168 | assert(lastComplete is CurrencyConverterVM.ViewState.LoadComplete) 169 | awaitComplete() 170 | } 171 | } 172 | } 173 | } 174 | 175 | @OptIn(ExperimentalCoroutinesApi::class) 176 | @Test 177 | fun testThatThenUserInputsTheCurrencyWeGeTheCalculatedAmount() { 178 | runTest { 179 | launch { 180 | val amountToConvert = 45.0 181 | 182 | coEvery { currencyAPI.networkFetchCurrencies() } returns hashMapOf().apply { 183 | put("INR", "Indian Rupee") 184 | put("XYZ", "XYZ currency") 185 | } 186 | 187 | coEvery { currencyAPI.networkFetchLatestRates() } returns NetLatestRates(rates = hashMapOf().apply { 188 | put("INR", 75.0) 189 | put("XYZ", 100.0) 190 | }) 191 | 192 | every { 193 | networkInfoProvider.listenToChanges() 194 | } returns emptyFlow() 195 | 196 | every { 197 | networkInfoProvider.hasNetwork() 198 | } returns true 199 | 200 | currencyConverterVM = CurrencyConverterVM( 201 | useCaseLoadCurrenciesDataFromNetwork, 202 | useCaseLoadLatestPricesFromNetwork, 203 | useCaseFetchLatestPrices, 204 | useCaseFetchCurrencies, 205 | networkInfoProvider 206 | ) 207 | currencyConverterVM.amountForConversion.value = amountToConvert.toString() 208 | delay(10) 209 | currencyConverterVM.latestRatesState.value.test { 210 | val pagingData = awaitItem() 211 | assert(pagingData.size == 2) 212 | assert( 213 | pagingData.first() 214 | .calculatedRate(amountToConvert) == pagingData.first().rate.times( 215 | amountToConvert 216 | ) 217 | ) 218 | awaitComplete() 219 | } 220 | 221 | } 222 | } 223 | } 224 | 225 | } 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