Refactor: Modularized the app and introduced the authentication module

- Extracted common data source code into a new module.
- Created a new module for authentication features.
- Updated dependencies to support the new modules.
- Refactored the code to use the new modules.
- Created new files for the authentication module.
- Added `GoogleSignInButton` and `GoogleSignInClient` to the authentication module.
- Updated `BooksRepositoryImpl` and `BookDetailsViewModel` to use the new `Logger` package.
- Updated `BooksRepositoryTest` to use the new `Logger` package.
- Updated the `Secrets` class and added it to `.gitignore`.
- Updated the `AboutVolume` component to use the new `formatHtmlToAnnotatedString` package.
- Updated `gradle-wrapper.properties` to use Gradle 8.10.2.
- Updated the `ColorGetters` to use the new `ColorPallet` package.
- Updated `NetworkModule` to use the new `Logger` and `LoggerImpl` packages.
- Updated `FakeBookUiState` to use the new `ColorPallet` package.
- Removed `SearchState` from `UseCases` and `BookDetailsViewModel`.
- Updated `BookDetailsUiState` to use the new `ColorPallet` package.
- Created new test classes for the common data source and authentication modules.
- Added proguard rules for the common data source and authentication modules.
- Added the common data source and authentication modules to `settings.gradle.kts`.

common-datasource/.gitignore

@@ -0,0 +1 @@
+/build

common-datasource/build.gradle.kts

@@ -0,0 +1,69 @@
+plugins {
+    alias(libs.plugins.android.library)
+    alias(libs.plugins.kotlin.android)
+    alias(libs.plugins.kotlin.compose)
+    alias(libs.plugins.hilt.android)
+    id("kotlin-kapt")
+}
+
+android {
+    namespace = "ke.don.common_datasource"
+    compileSdk = 35
+
+    defaultConfig {
+        minSdk = 24
+
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+        consumerProguardFiles("consumer-rules.pro")
+    }
+
+    buildTypes {
+        release {
+            isMinifyEnabled = false
+            proguardFiles(
+                getDefaultProguardFile("proguard-android-optimize.txt"),
+                "proguard-rules.pro"
+            )
+        }
+    }
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
+    }
+    kotlinOptions {
+        jvmTarget = "11"
+    }
+    buildFeatures {
+        compose = true
+    }
+    composeOptions {
+        kotlinCompilerExtensionVersion = "1.5.1"
+    }
+}
+
+dependencies {
+
+    implementation(libs.androidx.core.ktx)
+    implementation(libs.androidx.appcompat)
+    implementation(libs.material)
+    implementation(libs.androidx.lifecycle.runtime.ktx)
+    implementation(libs.androidx.activity.compose)
+    implementation(platform(libs.androidx.compose.bom))
+    implementation(libs.androidx.ui)
+    implementation(libs.androidx.ui.graphics)
+    implementation(libs.androidx.ui.tooling.preview)
+    implementation(libs.androidx.material3)
+    implementation(libs.androidx.material.icons.extended)
+    implementation(libs.kotlinx.coroutines.core)
+
+    //Dagger Hilt
+    implementation(libs.hilt.android)
+    implementation(libs.androidx.runtime.livedata)
+    kapt(libs.hilt.android.compiler)
+    implementation(libs.androidx.hilt.navigation.compose)
+
+    implementation(libs.material)
+    testImplementation(libs.junit)
+    androidTestImplementation(libs.androidx.junit)
+    androidTestImplementation(libs.androidx.espresso.core)
+}

common-datasource/proguard-rules.pro

@@ -0,0 +1,21 @@
+# 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

common-datasource/src/androidTest/java/ke/don/common_datasource/ExampleInstrumentedTest.kt

@@ -0,0 +1,24 @@
+package ke.don.common_datasource
+
+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("ke.don.common_datasource.test", appContext.packageName)
+    }
+}

common-datasource/src/main/AndroidManifest.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+
+</manifest>

common-datasource/src/test/java/ke/don/common_datasource/ExampleUnitTest.kt

@@ -0,0 +1,17 @@
+package ke.don.common_datasource
+
+import org.junit.Test
+
+import org.junit.Assert.*
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+class ExampleUnitTest {
+    @Test
+    fun addition_isCorrect() {
+        assertEquals(4, 2 + 2)
+    }
+}

common-domain/.gitignore

@@ -1 +1,3 @@
-/build
+/build
+/src/main/java/ke.don.shared_domain/values/Secrets.kt
+/src/main/java/ke/don/shared_domain/values/Secrets.kt

common-domain/src/main/java/ke/don/shared_domain/screens/logger/Logger.kt → common-domain/src/main/java/ke/don/shared_domain/logger/Logger.kt

@@ -1,4 +1,4 @@
-package ke.don.shared_domain.screens.logger
+package ke.don.shared_domain.logger
 
 interface Logger {
     fun logDebug(tag: String, message: String)

common-domain/src/main/java/ke/don/shared_domain/screens/logger/LoggerImpl.kt → common-domain/src/main/java/ke/don/shared_domain/logger/LoggerImpl.kt

@@ -1,4 +1,4 @@
-package ke.don.shared_domain.screens.logger
+package ke.don.shared_domain.logger
 
 class LoggerImpl : Logger {
     override fun logDebug(tag: String, message: String) {

common-domain/src/main/java/ke/don/shared_domain/screens/utils/color_utils/extractPaletteFromImage.kt → common-domain/src/main/java/ke/don/shared_domain/utils/color_utils/extractPaletteFromImage.kt

@@ -1,8 +1,8 @@
-package ke.don.shared_domain.screens.utils.color_utils
+package ke.don.shared_domain.utils.color_utils
 
 import okhttp3.OkHttpClient
 import okhttp3.Request
-import ke.don.shared_domain.screens.utils.color_utils.model.ColorPallet
+import ke.don.shared_domain.utils.color_utils.model.ColorPallet
 import java.io.InputStream
 import androidx.palette.graphics.Palette
 import android.graphics.BitmapFactory

common-domain/src/main/java/ke/don/shared_domain/screens/utils/color_utils/model/ColorPallet.kt → common-domain/src/main/java/ke/don/shared_domain/utils/color_utils/model/ColorPallet.kt

@@ -1,4 +1,4 @@
-package ke.don.shared_domain.screens.utils.color_utils.model
+package ke.don.shared_domain.utils.color_utils.model
 
 import androidx.compose.ui.graphics.Color
 

common-domain/src/main/java/ke/don/shared_domain/screens/utils/formatting_utils/formatHtmlToAnnotatedString.kt → common-domain/src/main/java/ke/don/shared_domain/utils/formatting_utils/formatHtmlToAnnotatedString.kt

@@ -1,4 +1,4 @@
-package ke.don.shared_domain.screens.utils.formatting_utils
+package ke.don.shared_domain.utils.formatting_utils
 
 import android.text.Spanned
 import android.text.style.CharacterStyle

common-domain/src/main/java/ke/don/shared_domain/values/Secrets.kt

@@ -0,0 +1,2 @@
+package ke.don.shared_domain.values
+

feature-authentication/.gitignore

@@ -0,0 +1 @@
+/build

feature-authentication/build.gradle.kts

@@ -0,0 +1,75 @@
+plugins {
+    alias(libs.plugins.android.library)
+    alias(libs.plugins.kotlin.android)
+    alias(libs.plugins.kotlin.compose)
+    alias(libs.plugins.hilt.android)
+    id("kotlin-kapt")
+}
+
+android {
+    namespace = "ke.don.feature_authentication"
+    compileSdk = 35
+
+    defaultConfig {
+        minSdk = 24
+
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+        consumerProguardFiles("consumer-rules.pro")
+    }
+
+    buildTypes {
+        release {
+            isMinifyEnabled = false
+            proguardFiles(
+                getDefaultProguardFile("proguard-android-optimize.txt"),
+                "proguard-rules.pro"
+            )
+        }
+    }
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
+    }
+    kotlinOptions {
+        jvmTarget = "11"
+    }
+    buildFeatures {
+        compose = true
+    }
+    composeOptions {
+        kotlinCompilerExtensionVersion = "1.5.1"
+    }
+}
+
+dependencies {
+
+    implementation(libs.androidx.core.ktx)
+    implementation(libs.androidx.appcompat)
+    implementation(libs.material)
+    implementation(libs.androidx.lifecycle.runtime.ktx)
+    implementation(libs.androidx.activity.compose)
+    implementation(platform(libs.androidx.compose.bom))
+    implementation(libs.androidx.ui)
+    implementation(libs.androidx.ui.graphics)
+    implementation(libs.androidx.ui.tooling.preview)
+    implementation(libs.androidx.material3)
+    implementation(libs.androidx.material.icons.extended)
+    implementation(libs.kotlinx.coroutines.core)
+
+    //Dagger Hilt
+    implementation(libs.hilt.android)
+    implementation(libs.androidx.runtime.livedata)
+    implementation(libs.googleid)
+    kapt(libs.hilt.android.compiler)
+    implementation(libs.androidx.hilt.navigation.compose)
+
+    //Credential Manager
+    implementation(libs.androidx.credentials)
+    implementation(libs.androidx.credentials.play.services.auth)
+
+
+    implementation(libs.material)
+    testImplementation(libs.junit)
+    androidTestImplementation(libs.androidx.junit)
+    androidTestImplementation(libs.androidx.espresso.core)
+}

feature-authentication/proguard-rules.pro

@@ -0,0 +1,21 @@
+# 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

feature-authentication/src/androidTest/java/ke/don/feature_authentication/ExampleInstrumentedTest.kt

@@ -0,0 +1,24 @@
+package ke.don.feature_authentication
+
+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("ke.don.feature_authentication.test", appContext.packageName)
+    }
+}

feature-authentication/src/main/AndroidManifest.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+
+</manifest>

feature-authentication/src/main/java/ke/don/feature_authentication/data/GoogleSignInClient.kt

@@ -0,0 +1,8 @@
+package ke.don.feature_authentication.data
+
+import android.content.Context
+import com.google.android.libraries.identity.googleid.GetGoogleIdOption
+
+class GoogleSignInClient(context: Context) {
+    val googleIdOption: GetGoogleIdOption = GetGoogleIdOption.Builder()
+}

feature-authentication/src/main/java/ke/don/feature_authentication/presentation/SignInWithGoogle.kt

@@ -0,0 +1,17 @@
+package ke.don.feature_authentication.presentation
+
+import android.service.autofill.OnClickAction
+import androidx.compose.material3.Button
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+
+@Composable
+fun GoogleSignInButton(
+    onClickAction: () -> Unit
+){
+    Button(
+        onClick = { /*TODO*/ }
+    ) {
+        Text(text = "Sign in with Google")
+    }
+}

feature-authentication/src/test/java/ke/don/feature_authentication/ExampleUnitTest.kt

@@ -0,0 +1,17 @@
+package ke.don.feature_authentication
+
+import org.junit.Test
+
+import org.junit.Assert.*
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+class ExampleUnitTest {
+    @Test
+    fun addition_isCorrect() {
+        assertEquals(4, 2 + 2)
+    }
+}

feature-book-details/src/main/java/ke/don/feature_book_details/data/di/NetworkModule.kt

@@ -1,7 +1,7 @@
 package ke.don.feature_book_details.data.di
 
-import ke.don.shared_domain.screens.logger.Logger
-import ke.don.shared_domain.screens.logger.LoggerImpl
+import ke.don.shared_domain.logger.Logger
+import ke.don.shared_domain.logger.LoggerImpl
 import ke.don.feature_book_details.network.GoogleBooksApi
 import dagger.Module
 import dagger.Provides