feat: Remote Config 기반 앱 테마 전환 추가

app/src/main/AndroidManifest.xml

@@ -155,12 +155,6 @@
         <activity
                 android:name=".presentation.intro.IntroActivity"
             android:exported="true">
-            <!-- 기본 런처 필터 -->
-            <intent-filter>
-                <action android:name="android.intent.action.MAIN" />
-                <category android:name="android.intent.category.LAUNCHER" />
-            </intent-filter>
-
             <!-- 딥링크 필터  -->
             <intent-filter>
                 <action android:name="android.intent.action.VIEW" />
@@ -173,6 +167,48 @@
                     android:scheme="eatssu" />
             </intent-filter>
         </activity>
+
+        <activity-alias
+            android:name=".alias.DefaultLauncherAlias"
+            android:enabled="true"
+            android:exported="true"
+            android:icon="@mipmap/ic_launcher"
+            android:label="@string/app_name"
+            android:roundIcon="@mipmap/ic_launcher_round"
+            android:targetActivity=".presentation.intro.IntroActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity-alias>
+
+        <activity-alias
+            android:name=".alias.ChristmasLauncherAlias"
+            android:enabled="false"
+            android:exported="true"
+            android:icon="@mipmap/ic_launcher_christmas"
+            android:label="@string/app_name"
+            android:roundIcon="@mipmap/ic_launcher_round_christmas"
+            android:targetActivity=".presentation.intro.IntroActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity-alias>
+
+        <activity-alias
+            android:name=".alias.SpringLauncherAlias"
+            android:enabled="false"
+            android:exported="true"
+            android:icon="@mipmap/ic_launcher_spring"
+            android:label="@string/app_name"
+            android:roundIcon="@mipmap/ic_launcher_spring_round"
+            android:targetActivity=".presentation.intro.IntroActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity-alias>
         <activity
             android:name=".presentation.cafeteria.review.ReviewComposeActivity"
             android:exported="true">

app/src/main/java/com/eatssu/android/data/local/AppThemeDataStore.kt

@@ -0,0 +1,45 @@
+package com.eatssu.android.data.local
+
+import android.content.Context
+import androidx.datastore.core.DataStore
+import androidx.datastore.preferences.core.Preferences
+import androidx.datastore.preferences.core.edit
+import androidx.datastore.preferences.core.stringPreferencesKey
+import androidx.datastore.preferences.preferencesDataStore
+import com.eatssu.android.domain.model.AppTheme
+import dagger.hilt.android.qualifiers.ApplicationContext
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.map
+import kotlinx.coroutines.flow.distinctUntilChanged
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.runBlocking
+import javax.inject.Inject
+import javax.inject.Singleton
+
+private val Context.appThemeDataStore: DataStore<Preferences> by preferencesDataStore(name = "app_theme")
+
+@Singleton
+class AppThemeDataStore @Inject constructor(
+    @ApplicationContext private val context: Context,
+) {
+
+    companion object {
+        private val APP_THEME_KEY = stringPreferencesKey("app_theme")
+    }
+
+    val appTheme: Flow<AppTheme> = context.appThemeDataStore.data
+        .map { preferences ->
+            AppTheme.fromStringOrDefault(preferences[APP_THEME_KEY].orEmpty())
+        }
+        .distinctUntilChanged()
+
+    val cachedAppTheme: AppTheme by lazy(LazyThreadSafetyMode.NONE) {
+        runBlocking { appTheme.first() }
+    }
+
+    suspend fun setAppTheme(theme: AppTheme) {
+        context.appThemeDataStore.edit { preferences ->
+            preferences[APP_THEME_KEY] = theme.remoteValue
+        }
+    }
+}

app/src/main/java/com/eatssu/android/data/remote/repository/FirebaseRemoteConfigRepositoryImpl.kt

@@ -1,6 +1,7 @@
 package com.eatssu.android.data.remote.repository
 
 import com.eatssu.android.R
+import com.eatssu.android.domain.model.AppTheme
 import com.eatssu.android.domain.model.RestaurantInfo
 import com.eatssu.android.domain.repository.FirebaseRemoteConfigRepository
 import com.eatssu.common.enums.Restaurant
@@ -29,25 +30,27 @@ class FirebaseRemoteConfigRepositoryImpl @Inject constructor(
     }
 
     override suspend fun getMinimumVersionCode(): Long {
-        // 값을 가져오기 전에 fetchAndActivate 호출
-        // min fetch interval이 지나지 않았으면 로컬 캐시를 사용하고, 지났으면 서버에서 가져옵니다.
-        try {
-            instance.fetchAndActivate().await()
-        } catch (e: Exception) {
-            Timber.e(e, "RemoteConfig fetchAndActivate 실패")
-        }
+        fetchAndActivateSafely()
         return instance.getLong("android_version_code")
     }
 
+    override suspend fun getAppTheme(): AppTheme {
+        fetchAndActivateSafely()
+        return AppTheme.fromStringOrDefault(instance.getString("app_theme"))
+    }
+
     override suspend fun getRestaurantInfo(restaurant: Restaurant): RestaurantInfo? {
-        // 값을 가져오기 전에 fetchAndActivate 호출
+        fetchAndActivateSafely()
+        return getCafeteriaInfo().find { it.enum == restaurant }
+    }
+
+    private suspend fun fetchAndActivateSafely() {
         // min fetch interval이 지나지 않았으면 로컬 캐시를 사용하고, 지났으면 서버에서 가져옵니다.
         try {
             instance.fetchAndActivate().await()
         } catch (e: Exception) {
             Timber.e(e, "RemoteConfig fetchAndActivate 실패")
         }
-        return getCafeteriaInfo().find { it.enum == restaurant }
     }
 
     private fun getCafeteriaInfo(): List<RestaurantInfo> {

app/src/main/java/com/eatssu/android/domain/model/AppTheme.kt

@@ -0,0 +1,37 @@
+package com.eatssu.android.domain.model
+
+import androidx.annotation.AnyRes
+import androidx.annotation.DrawableRes
+import com.eatssu.android.R
+
+enum class AppTheme(
+    val remoteValue: String,
+    @AnyRes val splashBackgroundResId: Int,
+    @DrawableRes val splashLogoResId: Int,
+    val launcherAliasSuffix: String,
+) {
+    DEFAULT(
+        remoteValue = "default",
+        splashBackgroundResId = R.color.primary,
+        splashLogoResId = R.drawable.img_logo,
+        launcherAliasSuffix = ".alias.DefaultLauncherAlias",
+    ),
+    CHRISTMAS(
+        remoteValue = "christmas",
+        splashBackgroundResId = R.drawable.img_background_snow,
+        splashLogoResId = R.drawable.img_logo_snow,
+        launcherAliasSuffix = ".alias.ChristmasLauncherAlias",
+    ),
+    SPRING(
+        remoteValue = "spring",
+        splashBackgroundResId = R.drawable.img_background_spring,
+        splashLogoResId = R.drawable.img_logo,
+        launcherAliasSuffix = ".alias.SpringLauncherAlias",
+    );
+
+    companion object {
+        fun fromStringOrDefault(value: String): AppTheme {
+            return entries.find { it.remoteValue.equals(value, ignoreCase = true) } ?: DEFAULT
+        }
+    }
+}

app/src/main/java/com/eatssu/android/domain/repository/FirebaseRemoteConfigRepository.kt

@@ -1,5 +1,6 @@
 package com.eatssu.android.domain.repository
 
+import com.eatssu.android.domain.model.AppTheme
 import com.eatssu.android.domain.model.RestaurantInfo
 import com.eatssu.common.enums.Restaurant
 
@@ -11,6 +12,11 @@ interface FirebaseRemoteConfigRepository {
      */
     suspend fun getMinimumVersionCode(): Long
 
+    /**
+     * 앱 테마를 Remote Config에서 가져옵니다.
+     */
+    suspend fun getAppTheme(): AppTheme
+
     /**
      * 특정 식당 정보를 Remote Config에서 가져옴
      * 값을 가져오기 전에 fetchAndActivate를 호출하여 최신 값을 가져옵니다.

app/src/main/java/com/eatssu/android/presentation/intro/IntroActivity.kt

@@ -1,12 +1,16 @@
 package com.eatssu.android.presentation.intro
 
+import android.content.ComponentName
 import android.content.Intent
+import android.content.pm.PackageManager
 import android.os.Bundle
 import androidx.activity.enableEdgeToEdge
 import androidx.activity.viewModels
 import androidx.appcompat.app.AppCompatActivity
 import androidx.lifecycle.lifecycleScope
+import com.eatssu.android.BuildConfig
 import com.eatssu.android.databinding.ActivityIntroBinding
+import com.eatssu.android.domain.model.AppTheme
 import com.eatssu.android.presentation.MainActivity
 import com.eatssu.android.presentation.common.ForceUpdateDialogActivity
 import com.eatssu.android.presentation.login.LoginActivity
@@ -23,6 +27,7 @@ import com.eatssu.common.enums.ScreenId
 import dagger.hilt.android.AndroidEntryPoint
 import kotlinx.coroutines.flow.collectLatest
 import kotlinx.coroutines.launch
+import timber.log.Timber
 import javax.inject.Inject
 
 @AndroidEntryPoint
@@ -41,6 +46,10 @@ class IntroActivity : AppCompatActivity() {
         setContentView(binding.root)
         log()
 
+        // 로컬에 저장된 테마 동기로 불러오기
+        applySplashTheme(introViewModel.appTheme.value)
+        observeTheme()
+
         observeState()
         observeEvents()
         observeNetworkError()
@@ -63,6 +72,15 @@ class IntroActivity : AppCompatActivity() {
         }
     }
 
+    private fun observeTheme() {
+        lifecycleScope.launch {
+            introViewModel.appTheme.collectLatest { theme ->
+                applySplashTheme(theme)
+                syncLauncherIcon(theme)
+            }
+        }
+    }
+
     private fun observeState() {
         lifecycleScope.launch {
             introViewModel.uiState.collectLatest { state ->
@@ -84,6 +102,35 @@ class IntroActivity : AppCompatActivity() {
         }
     }
 
+    private fun applySplashTheme(theme: AppTheme) {
+        binding.root.setBackgroundResource(theme.splashBackgroundResId)
+        binding.ivLogo.setImageResource(theme.splashLogoResId)
+    }
+
+    private fun syncLauncherIcon(theme: AppTheme) {
+        if (BuildConfig.DEBUG) return
+
+        val manifestPackageName = BuildConfig::class.java.packageName
+        val enabledAlias = ComponentName(packageName, manifestPackageName + theme.launcherAliasSuffix)
+
+        AppTheme.entries.forEach { appTheme ->
+            val componentName = ComponentName(packageName, manifestPackageName + appTheme.launcherAliasSuffix)
+            val newState = if (componentName == enabledAlias) {
+                PackageManager.COMPONENT_ENABLED_STATE_ENABLED
+            } else {
+                PackageManager.COMPONENT_ENABLED_STATE_DISABLED
+            }
+
+            packageManager.setComponentEnabledSetting(
+                componentName,
+                newState,
+                PackageManager.DONT_KILL_APP,
+            )
+        }
+
+        Timber.d("런처 아이콘 테마 적용: %s", theme.remoteValue)
+    }
+
     private fun observeEvents() {
         lifecycleScope.launch {
             introViewModel.uiEvent.collectLatest { event ->

app/src/main/java/com/eatssu/android/presentation/intro/IntroViewModel.kt

@@ -4,6 +4,8 @@ import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
 import com.eatssu.android.R
 import com.eatssu.android.BuildConfig.VERSION_CODE
+import com.eatssu.android.data.local.AppThemeDataStore
+import com.eatssu.android.domain.model.AppTheme
 import com.eatssu.android.domain.repository.FirebaseRemoteConfigRepository
 import com.eatssu.android.domain.usecase.auth.GetAccessTokenUseCase
 import com.eatssu.android.domain.usecase.health.HealthCheckUseCase
@@ -14,9 +16,11 @@ import com.eatssu.common.enums.ToastType
 import dagger.hilt.android.lifecycle.HiltViewModel
 import kotlinx.coroutines.flow.MutableSharedFlow
 import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.SharedFlow
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.stateIn
 import kotlinx.coroutines.launch
 import timber.log.Timber
 import javax.inject.Inject
@@ -25,7 +29,8 @@ import javax.inject.Inject
 class IntroViewModel @Inject constructor(
     private val healthCheckUseCase: HealthCheckUseCase,
     private val getAccessTokenUseCase: GetAccessTokenUseCase,
-    private val firebaseRemoteConfigRepository: FirebaseRemoteConfigRepository
+    private val firebaseRemoteConfigRepository: FirebaseRemoteConfigRepository,
+    private val appThemeDataStore: AppThemeDataStore,
 ) : ViewModel() {
 
     private val _uiState: MutableStateFlow<UiState<IntroState>> = MutableStateFlow(UiState.Init)
@@ -37,6 +42,13 @@ class IntroViewModel @Inject constructor(
     private val _versionCheckResult = MutableStateFlow<VersionCheckResult?>(null)
     val versionCheckResult: StateFlow<VersionCheckResult?> = _versionCheckResult.asStateFlow()
 
+    val appTheme: StateFlow<AppTheme> = appThemeDataStore.appTheme
+        .stateIn(
+            scope = viewModelScope,
+            started = SharingStarted.Eagerly,
+            initialValue = appThemeDataStore.cachedAppTheme,
+        )
+
     init {
         initializeApp()
     }
@@ -46,6 +58,8 @@ class IntroViewModel @Inject constructor(
             _uiState.value = UiState.Loading
 
             try {
+                syncAppTheme()
+
                 // 1. 버전 체크 (Firebase Remote Config는 자동으로 초기화됨)
                 checkVersionUpdate()
 
@@ -60,6 +74,16 @@ class IntroViewModel @Inject constructor(
         }
     }
 
+    private suspend fun syncAppTheme() {
+        try {
+            val remoteTheme = firebaseRemoteConfigRepository.getAppTheme()
+            appThemeDataStore.setAppTheme(remoteTheme)
+            Timber.i("theme loaded $remoteTheme")
+        } catch (e: Exception) {
+            Timber.e(e, "앱 테마 로드 중 예외 발생")
+        }
+    }
+
     private suspend fun checkVersionUpdate() {
         try {
             val minimumVersionCode = firebaseRemoteConfigRepository.getMinimumVersionCode()

app/src/main/res/layout/activity_intro.xml

@@ -8,6 +8,7 @@
         tools:context=".presentation.intro.IntroActivity">
 
     <ImageView
+        android:id="@+id/ivLogo"
         android:layout_width="250dp"
         android:layout_height="wrap_content"
         android:scaleType="centerInside"
@@ -19,4 +20,4 @@
         app:layout_constraintTop_toTopOf="parent" />
 
 
-</androidx.constraintlayout.widget.ConstraintLayout>
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/mipmap-anydpi-v26/ic_launcher_spring.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/white"/>
+    <foreground android:drawable="@mipmap/ic_launcher_spring_foreground"/>
+</adaptive-icon>

app/src/main/res/mipmap-anydpi-v26/ic_launcher_spring_round.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/white"/>
+    <foreground android:drawable="@mipmap/ic_launcher_spring_foreground"/>
+</adaptive-icon>