Exercise Javier Gonzalez

app/.gitignore

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+/build

app/build.gradle

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+plugins {
+    id 'com.android.application'
+    id 'kotlin-android'
+    id 'kotlin-kapt'
+    id 'kotlin-android-extensions'
+}
+
+android {
+    compileSdkVersion 30
+    buildToolsVersion "30.0.2"
+
+    defaultConfig {
+        applicationId "com.swiftly.codingexersicejavi"
+        minSdkVersion 21
+        targetSdkVersion 30
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+}
+
+dependencies {
+
+    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+    implementation 'androidx.core:core-ktx:1.3.2'
+    implementation 'androidx.appcompat:appcompat:1.2.0'
+    implementation 'com.google.android.material:material:1.3.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
+    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
+    implementation project(path: ':core')
+
+    implementation "com.google.dagger:dagger:$daggerVersion"
+    implementation "com.google.dagger:dagger-android-support:$daggerVersion"
+    kapt "com.google.dagger:dagger-compiler:$daggerVersion"
+    kapt "com.google.dagger:dagger-android-processor:$daggerVersion"
+
+    implementation 'androidx.navigation:navigation-fragment-ktx:2.3.3'
+    implementation 'androidx.navigation:navigation-ui-ktx:2.3.3'
+    implementation 'androidx.lifecycle:lifecycle-extensions:2.2.0'
+
+    implementation 'com.android.volley:volley:1.1.1'
+
+    implementation 'com.google.code.gson:gson:2.8.6'
+
+    implementation "com.github.bumptech.glide:glide:$version_glide"
+
+    testImplementation 'junit:junit:4.+'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
+}

app/proguard-rules.pro

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

app/src/androidTest/java/com/swiftly/codingexersicejavi/ExampleInstrumentedTest.kt

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

app/src/main/AndroidManifest.xml

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

app/src/main/java/com/swiftly/codingexersicejavi/framework/ManagerSpecialDbSource.kt

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+package com.swiftly.codingexersicejavi.framework
+
+import android.content.Context
+import com.swiftly.codingexersicejavi.framework.db.DbSpecialsMock
+import com.swiftly.core.data.ManagerSpecialList
+import com.swiftly.core.repo.ManagerSpecialDataSource
+
+class ManagerSpecialDbSource(context: Context): ManagerSpecialDataSource {
+
+    private val specialsService = DbSpecialsMock.getInstance()
+
+    override suspend fun getAll(): ManagerSpecialList? {
+        return specialsService.getAll()
+    }
+
+    override suspend fun setAll(list: ManagerSpecialList?) {
+        specialsService.setAll(list)
+    }
+}

app/src/main/java/com/swiftly/codingexersicejavi/framework/ManagerSpecialRepository.kt

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+package com.swiftly.codingexersicejavi.framework
+
+import com.swiftly.codingexersicejavi.framework.network.ManagerSpecialService
+import com.swiftly.core.data.Resource
+import com.swiftly.core.data.ManagerSpecial
+import com.swiftly.core.data.ManagerSpecialList
+import com.swiftly.core.repo.ManagerSpecialDataSource
+import com.swiftly.core.repo.ManagerSpecialRepository
+
+class ManagerSpecialRepository(private val dataSource: ManagerSpecialDataSource, private val service: ManagerSpecialService): ManagerSpecialRepository {
+
+    override suspend fun getAllSpecials(): Resource<ManagerSpecialList?>? {
+        var list: ManagerSpecialList? = dataSource.getAll()
+        if (list == null || isStale())
+            return service.fetchAllSpecials()
+        else
+            return Resource.Success<ManagerSpecialList?>(data = list)
+    }
+
+    override suspend fun setAllSpecials(list: ManagerSpecialList?) {
+        dataSource.setAll(list)
+    }
+
+    override fun isStale(): Boolean{
+        return true    //policy for this project is to always fetch fresh data
+    }
+}

app/src/main/java/com/swiftly/codingexersicejavi/framework/ManagerSpecialsViewModel.kt

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+package com.swiftly.codingexersicejavi.framework
+
+import android.app.Application
+import android.util.Log
+import androidx.appcompat.app.AlertDialog
+import androidx.lifecycle.AndroidViewModel
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import com.swiftly.codingexersicejavi.R
+import com.swiftly.codingexersicejavi.framework.di.ApplicationModule
+import com.swiftly.codingexersicejavi.framework.di.DaggerViewModelComponent
+import com.swiftly.codingexersicejavi.framework.usecases.UseCases
+import com.swiftly.core.data.ManagerSpecial
+import com.swiftly.core.data.ManagerSpecialList
+import com.swiftly.core.data.Resource
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import javax.inject.Inject
+
+class ManagerSpecialsViewModel(application: Application): AndroidViewModel(application) {
+
+    private val TAG: String = "ManagerSpecialsViewModel"
+    private val coroutineScope = CoroutineScope(Dispatchers.IO)
+    val fetched = MutableLiveData<Boolean>()
+    val loading = MutableLiveData<Boolean>()
+    val error = MutableLiveData<String>()
+    val specialsList = MutableLiveData<List<ManagerSpecial>?>()
+
+    @Inject
+    lateinit var useCases: UseCases
+
+    init{
+        DaggerViewModelComponent.builder()
+            .applicationModule(ApplicationModule(getApplication()))
+            .build()
+            .inject(this)
+    }
+
+    fun getSpecials() {
+        loading.value = true
+        coroutineScope.launch {
+
+            var resource = useCases.getAllSpecials()
+            if(resource is Resource.Error<ManagerSpecialList?>?){
+                error.postValue(resource?.message)
+            }else if (resource is Resource.Success<ManagerSpecialList?>?){
+                specialsList.postValue(resource?.data?.managerSpecials)
+                Log.i(TAG, "canvas unit: " + resource?.data?.canvasUnit)
+            }
+            loading.postValue( false)
+        }
+    }
+}

app/src/main/java/com/swiftly/codingexersicejavi/framework/db/DbSpecialsMock.kt

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+package com.swiftly.codingexersicejavi.framework.db
+
+import com.swiftly.core.data.ManagerSpecial
+import com.swiftly.core.data.ManagerSpecialList
+import com.swiftly.core.repo.ManagerSpecialDataSource
+
+/**
+ * Will hold live data which the repository & viewmodel will observe.
+ * Updated during a successful network call
+ */
+class DbSpecialsMock: ManagerSpecialDataSource {
+
+    private var managerSpecials: ManagerSpecialList? = null
+
+    companion object {
+        @Volatile
+        private var INSTANCE: DbSpecialsMock? = null
+
+        @Synchronized
+        fun getInstance(): DbSpecialsMock
+                = INSTANCE ?: DbSpecialsMock().also { INSTANCE = it }
+    }
+
+    override suspend fun getAll(): ManagerSpecialList? {
+        return managerSpecials
+    }
+
+    override suspend fun setAll(list: ManagerSpecialList?) {
+        managerSpecials = list
+    }
+}

app/src/main/java/com/swiftly/codingexersicejavi/framework/di/ApplicationModule.kt

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+package com.swiftly.codingexersicejavi.framework.di
+
+import android.app.Application
+import dagger.Module
+import dagger.Provides
+
+@Module
+class ApplicationModule(val app: Application) {
+    @Provides
+    fun providesApp() = app
+}

app/src/main/java/com/swiftly/codingexersicejavi/framework/di/RepositoryModule.kt

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+package com.swiftly.codingexersicejavi.framework.di
+
+import android.app.Application
+import com.swiftly.codingexersicejavi.framework.ManagerSpecialDbSource
+import com.swiftly.codingexersicejavi.framework.ManagerSpecialRepository
+import com.swiftly.codingexersicejavi.framework.network.ManagerSpecialService
+import dagger.Module
+import dagger.Provides
+
+@Module
+class RepositoryModule {
+    @Provides
+    fun provideRepository(app: Application) = ManagerSpecialRepository(
+        ManagerSpecialDbSource(app),
+        ManagerSpecialService(app, ManagerSpecialDbSource(app)
+        )
+    )
+}

app/src/main/java/com/swiftly/codingexersicejavi/framework/di/ServiceModule.kt

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+package com.swiftly.codingexersicejavi.framework.di
+
+import android.app.Application
+import com.swiftly.codingexersicejavi.framework.ManagerSpecialDbSource
+import com.swiftly.codingexersicejavi.framework.network.ManagerSpecialService
+import com.swiftly.core.repo.ManagerSpecialRepository
+import dagger.Module
+import dagger.Provides
+
+@Module
+class ServiceModule {
+    @Provides
+    fun provideService(app: Application) = ManagerSpecialService(app, ManagerSpecialDbSource(app))
+}

app/src/main/java/com/swiftly/codingexersicejavi/framework/di/UseCasesModule.kt

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+package com.swiftly.codingexersicejavi.framework.di
+
+import com.swiftly.codingexersicejavi.framework.ManagerSpecialRepository
+import com.swiftly.codingexersicejavi.framework.usecases.UseCases
+import com.swiftly.core.usecase.GetAllSpecials
+import com.swiftly.core.usecase.SetAllSpecials
+import dagger.Module
+import dagger.Provides
+
+
+@Module
+class UseCasesModule {
+    @Provides
+    fun getUseCases(repository: ManagerSpecialRepository) = UseCases(
+            GetAllSpecials(repository),
+            SetAllSpecials(repository)
+    )
+}

app/src/main/java/com/swiftly/codingexersicejavi/framework/di/ViewModelComponent.kt

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+package com.swiftly.codingexersicejavi.framework.di
+
+import com.swiftly.codingexersicejavi.framework.ManagerSpecialsViewModel
+import dagger.Component
+
+@Component(modules = [ApplicationModule::class, RepositoryModule::class, UseCasesModule::class, ServiceModule::class])
+interface ViewModelComponent {
+    fun inject(specialsViewModel: ManagerSpecialsViewModel)
+}