From 1a393dbaa5e616a0ba717088fd39d3dcd87c8ad0 Mon Sep 17 00:00:00 2001
From: Francisco Velazquez <kikin81@gmail.com>
Date: Fri, 17 May 2024 11:07:39 -0700
Subject: [PATCH] feat(hilt): adds basic dependency injection (#6)

---
 app/build.gradle.kts                          | 31 +++++++++++------
 app/src/main/AndroidManifest.xml              |  1 +
 .../gamingbacklog/BacklogApplication.kt       |  8 +++++
 .../android/gamingbacklog/MainActivity.kt     | 16 +++++++++
 .../android/gamingbacklog/di/AppModule.kt     | 34 +++++++++++++++++++
 .../domain/usecase/AppEntryUseCases.kt        |  6 ++++
 build.gradle.kts                              |  3 ++
 gradle/libs.versions.toml                     |  7 ++++
 8 files changed, 95 insertions(+), 11 deletions(-)
 create mode 100644 app/src/main/java/us/kikin/android/gamingbacklog/BacklogApplication.kt
 create mode 100644 app/src/main/java/us/kikin/android/gamingbacklog/di/AppModule.kt
 create mode 100644 app/src/main/java/us/kikin/android/gamingbacklog/domain/usecase/AppEntryUseCases.kt

diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index c37f8cb..121090e 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -2,6 +2,9 @@ plugins {
     alias(libs.plugins.android.application)
     alias(libs.plugins.jetbrains.kotlin.android)
     alias(libs.plugins.detekt)
+    alias(libs.plugins.sortDependencies)
+    alias(libs.plugins.ksp)
+    alias(libs.plugins.hilt)
 }
 
 android {
@@ -51,24 +54,30 @@ android {
 }
 
 dependencies {
+    ksp(libs.hilt.compiler)
 
+    lintChecks(libs.slack.compose.lint)
+
+    implementation(platform(libs.androidx.compose.bom))
+    implementation(libs.androidx.activity.compose)
     implementation(libs.androidx.core.ktx)
+    implementation(libs.androidx.core.splashscreen)
+    implementation(libs.androidx.datastore.preferences)
     implementation(libs.androidx.lifecycle.runtime.ktx)
-    implementation(libs.androidx.activity.compose)
-    implementation(platform(libs.androidx.compose.bom))
+    implementation(libs.androidx.material3)
     implementation(libs.androidx.ui)
-    implementation(libs.androidx.ui.text.google.fonts)
     implementation(libs.androidx.ui.graphics)
+    implementation(libs.androidx.ui.text.google.fonts)
     implementation(libs.androidx.ui.tooling.preview)
-    implementation(libs.androidx.core.splashscreen)
-    implementation(libs.androidx.datastore.preferences)
-    implementation(libs.androidx.material3)
-    lintChecks(libs.slack.compose.lint)
+    implementation(libs.hilt)
+
+    debugImplementation(libs.androidx.ui.test.manifest)
+    debugImplementation(libs.androidx.ui.tooling)
+
     testImplementation(libs.junit)
-    androidTestImplementation(libs.androidx.junit)
-    androidTestImplementation(libs.androidx.espresso.core)
+
     androidTestImplementation(platform(libs.androidx.compose.bom))
+    androidTestImplementation(libs.androidx.espresso.core)
+    androidTestImplementation(libs.androidx.junit)
     androidTestImplementation(libs.androidx.ui.test.junit4)
-    debugImplementation(libs.androidx.ui.tooling)
-    debugImplementation(libs.androidx.ui.test.manifest)
 }
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 722f507..3d2369a 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -3,6 +3,7 @@
     xmlns:tools="http://schemas.android.com/tools">
 
     <application
+        android:name=".BacklogApplication"
         android:allowBackup="true"
         android:dataExtractionRules="@xml/data_extraction_rules"
         android:fullBackupContent="@xml/backup_rules"
diff --git a/app/src/main/java/us/kikin/android/gamingbacklog/BacklogApplication.kt b/app/src/main/java/us/kikin/android/gamingbacklog/BacklogApplication.kt
new file mode 100644
index 0000000..94c9020
--- /dev/null
+++ b/app/src/main/java/us/kikin/android/gamingbacklog/BacklogApplication.kt
@@ -0,0 +1,8 @@
+package us.kikin.android.gamingbacklog
+
+import android.app.Application
+import dagger.hilt.android.HiltAndroidApp
+
+@HiltAndroidApp
+class BacklogApplication: Application() {
+}
diff --git a/app/src/main/java/us/kikin/android/gamingbacklog/MainActivity.kt b/app/src/main/java/us/kikin/android/gamingbacklog/MainActivity.kt
index 9851c14..235d657 100644
--- a/app/src/main/java/us/kikin/android/gamingbacklog/MainActivity.kt
+++ b/app/src/main/java/us/kikin/android/gamingbacklog/MainActivity.kt
@@ -1,6 +1,7 @@
 package us.kikin.android.gamingbacklog
 
 import android.os.Bundle
+import android.util.Log
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
 import androidx.activity.enableEdgeToEdge
@@ -13,15 +14,30 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.core.splashscreen.SplashScreen.Companion.installSplashScreen
 import androidx.core.view.WindowCompat
+import androidx.lifecycle.lifecycleScope
+import dagger.hilt.android.AndroidEntryPoint
+import kotlinx.coroutines.launch
+import us.kikin.android.gamingbacklog.domain.usecase.AppEntryUseCases
 import us.kikin.android.gamingbacklog.presentation.onboarding.OnboardingScreen
 import us.kikin.android.gamingbacklog.ui.theme.AppTheme
+import javax.inject.Inject
 
+@AndroidEntryPoint
 class MainActivity : ComponentActivity() {
+
+    @Inject
+    lateinit var appEntryUseCases: AppEntryUseCases
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         WindowCompat.setDecorFitsSystemWindows(window, false)
         installSplashScreen()
         enableEdgeToEdge()
+        lifecycleScope.launch {
+            appEntryUseCases.readAppEntry().collect {
+                Log.d("Test", it.toString())
+            }
+        }
         setContent {
             AppTheme {
                 Box(modifier = Modifier.background(color = MaterialTheme.colorScheme.background)) {
diff --git a/app/src/main/java/us/kikin/android/gamingbacklog/di/AppModule.kt b/app/src/main/java/us/kikin/android/gamingbacklog/di/AppModule.kt
new file mode 100644
index 0000000..ab62787
--- /dev/null
+++ b/app/src/main/java/us/kikin/android/gamingbacklog/di/AppModule.kt
@@ -0,0 +1,34 @@
+package us.kikin.android.gamingbacklog.di
+
+import android.app.Application
+import dagger.Module
+import dagger.Provides
+import dagger.hilt.InstallIn
+import dagger.hilt.components.SingletonComponent
+import us.kikin.android.gamingbacklog.data.manager.LocalUserManagerImpl
+import us.kikin.android.gamingbacklog.domain.manager.LocalUserManager
+import us.kikin.android.gamingbacklog.domain.usecase.AppEntryUseCases
+import us.kikin.android.gamingbacklog.domain.usecase.ReadAppEntry
+import us.kikin.android.gamingbacklog.domain.usecase.SaveAppEntry
+import javax.inject.Singleton
+
+@Module
+@InstallIn(SingletonComponent::class)
+object AppModule {
+
+    @Provides
+    @Singleton
+    fun provideLocalUserManager(
+        application: Application
+    ): LocalUserManager = LocalUserManagerImpl(application)
+
+
+    @Provides
+    @Singleton
+    fun provideAppEntryUseCases(
+        localUserManager: LocalUserManager
+    ): AppEntryUseCases = AppEntryUseCases(
+        readAppEntry = ReadAppEntry(localUserManager),
+        saveAppEntry = SaveAppEntry(localUserManager)
+    )
+}
diff --git a/app/src/main/java/us/kikin/android/gamingbacklog/domain/usecase/AppEntryUseCases.kt b/app/src/main/java/us/kikin/android/gamingbacklog/domain/usecase/AppEntryUseCases.kt
new file mode 100644
index 0000000..2c8b8c2
--- /dev/null
+++ b/app/src/main/java/us/kikin/android/gamingbacklog/domain/usecase/AppEntryUseCases.kt
@@ -0,0 +1,6 @@
+package us.kikin.android.gamingbacklog.domain.usecase
+
+data class AppEntryUseCases(
+    val readAppEntry: ReadAppEntry,
+    val saveAppEntry: SaveAppEntry,
+)
diff --git a/build.gradle.kts b/build.gradle.kts
index 74d4221..f00a34d 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -3,4 +3,7 @@ plugins {
     alias(libs.plugins.android.application) apply false
     alias(libs.plugins.jetbrains.kotlin.android) apply false
     alias(libs.plugins.detekt) apply false
+    alias(libs.plugins.hilt) apply false
+    alias(libs.plugins.ksp) apply false
+    alias(libs.plugins.sortDependencies)
 }
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index fc963fb..7b1fabc 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -8,6 +8,8 @@ espressoCore = "3.5.1"
 lifecycleRuntimeKtx = "2.8.0"
 activityCompose = "1.9.0"
 composeBom = "2024.05.00"
+hilt = "2.51.1"
+ksp = "1.9.24-1.0.20"
 
 [libraries]
 androidx-core-ktx = { group = "androidx.core", name = "core-ktx", version.ref = "coreKtx" }
@@ -28,8 +30,13 @@ slack-compose-lint = { group = "com.slack.lint.compose", name = "compose-lint-ch
 androidx-ui-text-google-fonts = { group = "androidx.compose.ui", name = "ui-text-google-fonts", version = "1.6.7" }
 androidx-core-splashscreen = { group = "androidx.core", name = "core-splashscreen", version = "1.0.1" }
 androidx-datastore-preferences = { group = "androidx.datastore", name = "datastore-preferences", version = "1.1.1" }
+hilt = { group = "com.google.dagger", name = "hilt-android", version.ref = "hilt" }
+hilt-compiler = { group = "com.google.dagger", name = "hilt-android-compiler", version.ref = "hilt" }
 
 [plugins]
 android-application = { id = "com.android.application", version.ref = "agp" }
 jetbrains-kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
 detekt = { id = "io.gitlab.arturbosch.detekt", version = "1.23.6" }
+hilt = { id = "com.google.dagger.hilt.android", version.ref = "hilt" }
+sortDependencies = { id = "com.squareup.sort-dependencies", version = "0.6"}
+ksp = { id = "com.google.devtools.ksp", version.ref = "ksp" }