Merge pull request #291 from algokelvin-373/production/v1.0.2 - Production/v1.0.2 to master version 1.0.2

Production/v1.0.2 to master

Author: algokelvin-373

A01_BOOTCAMP_UDEMY/CleanArchitectureMVVM/.gitignore

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+*.iml
+.gradle
+/local.properties
+.idea
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties

A01_BOOTCAMP_UDEMY/CleanArchitectureMVVM/app/.gitignore

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+/build

A01_BOOTCAMP_UDEMY/CleanArchitectureMVVM/app/build.gradle

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+plugins {
+    id 'com.android.application'
+    id 'kotlin-android'
+    id 'kotlin-kapt'
+    id 'kotlin-parcelize'
+}
+
+android {
+    compileSdkVersion 31
+    buildToolsVersion "30.0.3"
+
+    defaultConfig {
+        applicationId "com.algokelvin.app"
+        minSdkVersion 21
+        targetSdkVersion 31
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    buildFeatures {
+        viewBinding true
+    }
+    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:1.6.0'
+    implementation 'androidx.appcompat:appcompat:1.3.1'
+    implementation 'com.google.android.material:material:1.4.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.1'
+
+    // Lifecycle
+    implementation "androidx.lifecycle:lifecycle-livedata-ktx:2.4.0"
+
+    // Room
+    implementation "androidx.room:room-ktx:2.3.0"
+    kapt "androidx.room:room-compiler:2.3.0"
+
+    // Coroutines
+    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.5.1'
+    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.5.1'
+}

A01_BOOTCAMP_UDEMY/CleanArchitectureMVVM/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

A01_BOOTCAMP_UDEMY/CleanArchitectureMVVM/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.algokelvin.app">
+
+    <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.MVVM_CleanArch_App">
+        <activity
+            android:name=".ui.main.MainActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

A01_BOOTCAMP_UDEMY/CleanArchitectureMVVM/app/src/main/java/com/algokelvin/app/base/BaseActivity.kt

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+package com.algokelvin.app.base
+
+import android.widget.Toast
+import androidx.appcompat.app.AppCompatActivity
+
+open class BaseActivity: AppCompatActivity() {
+    protected fun toast(message: String, isLong: Boolean = false) {
+        Toast.makeText(this, message,
+            if (isLong)
+                Toast.LENGTH_LONG
+            else
+                Toast.LENGTH_SHORT
+        ).show()
+    }
+}

A01_BOOTCAMP_UDEMY/CleanArchitectureMVVM/app/src/main/java/com/algokelvin/app/base/UseCase.kt

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+package com.algokelvin.app.base
+
+import com.algokelvin.app.model.Resource
+import kotlinx.coroutines.CoroutineDispatcher
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.catch
+import kotlinx.coroutines.flow.flowOn
+
+abstract class UseCase<P, R: Any>(private val dispatcher: CoroutineDispatcher) {
+
+    operator fun invoke(param: P): Flow<Resource<R>> {
+        return execute(param).catch {
+            emit(Resource.error(it.message ?: ""))
+        }.flowOn(dispatcher)
+    }
+
+    @Throws(RuntimeException::class)
+    abstract fun execute(param: P): Flow<Resource<R>>
+
+}

A01_BOOTCAMP_UDEMY/CleanArchitectureMVVM/app/src/main/java/com/algokelvin/app/data/NetworkBoundResource.kt

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+package com.algokelvin.app.data
+
+import kotlinx.coroutines.flow.*
+
+/*
+* This is the strategy util to make a data request
+* supported offline-mode using Flow.
+* */
+class NetworkBoundResource<T>(
+    val query: () -> Flow<T>, // first, getting the data from local db
+    val fetch: suspend () -> T, // then, fetch the data from network
+    val saveFetchResult: (T) -> Unit, // after getting the data from network, save it into local db
+    val onFetchFailed: (Throwable) -> Unit = {}, // handling fetch failed if any
+    val isShouldFetch: (T) -> Boolean = { _ -> true } // is it need to fetch to network or not (default: true)
+) {
+
+    fun asFlow(): Flow<Resource<T>> = flow {
+        val flow = query()
+            .onStart { emit(Resource.loading(null)) }
+            .flatMapConcat { data ->
+                if (isShouldFetch(data)) {
+                    emit(Resource.loading(data))
+
+                    try {
+                        saveFetchResult(fetch())
+                        query().map { Resource.success(it) }
+                    } catch (throwable: Throwable) {
+                        onFetchFailed(throwable)
+                        query().map {
+                            Resource.error(throwable.message?: "", null)
+                        }
+                    }
+                } else {
+                    query().map { Resource.success(it) }
+                }
+            }
+
+        emitAll(flow)
+    }
+}

A01_BOOTCAMP_UDEMY/CleanArchitectureMVVM/app/src/main/java/com/algokelvin/app/data/Resource.kt

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+package com.algokelvin.app.data
+
+data class Resource<out T> (val status: Status, val data: T?, val message: String?) {
+    enum class Status {
+        SUCCESS,
+        ERROR,
+        LOADING
+    }
+
+    companion object {
+        fun <T> success(data: T):Resource<T> {
+            return Resource(Status.SUCCESS, data, null)
+        }
+        fun <T> error(message: String, data: T? = null):Resource<T> {
+            return Resource(Status.ERROR, data, message)
+        }
+        fun <T> loading(data: T? = null):Resource<T> {
+            return Resource(Status.LOADING, data, null)
+        }
+    }
+}

A01_BOOTCAMP_UDEMY/CleanArchitectureMVVM/app/src/main/java/com/algokelvin/app/data/datasource/local/ProductDao.kt

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+package com.algokelvin.app.data.datasource.local
+
+import androidx.room.Dao
+import androidx.room.Insert
+import androidx.room.OnConflictStrategy
+import androidx.room.Query
+import com.algokelvin.app.data.entity.Product
+import kotlinx.coroutines.flow.Flow
+
+@Dao
+interface ProductDao {
+    @Query("SELECT * FROM product")
+    fun products(): Flow<List<Product>>
+
+    @JvmSuppressWildcards
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    fun insertAll(products: List<Product>)
+
+    @Insert
+    fun insert(product: Product)
+
+    @Query("SELECT * FROM product WHERE id=:id")
+    fun productBy(id: Int): Flow<Product>
+}