feat: 광고 보기 기능 구현

app/build.gradle.kts

@@ -43,6 +43,9 @@ android {
         buildConfigField("String", "BACKEND_BASE_URL", "\"$backendBaseUrl\"")
         val aiBaseUrl = localProperties.getProperty("AI_BASE_URL")
         buildConfigField("String", "AI_BASE_URL", "\"$aiBaseUrl\"")
+
+        val admobAppId = localProperties.getProperty("ADMOB_APP_ID") ?: "ca-app-pub-xxxxxxxxxxxxxxxx~yyyyyyyyyy"
+        manifestPlaceholders["ADMOB_APP_ID"] = admobAppId
     }
 
     buildTypes {
@@ -162,6 +165,8 @@ dependencies {
 
     //Timber
     implementation("com.jakewharton.timber:timber:5.0.1")
+
+    implementation("com.google.android.gms:play-services-ads:23.6.0")
 }
 
 ksp {

app/src/main/AndroidManifest.xml

@@ -15,6 +15,10 @@
         android:supportsRtl="true"
         android:theme="@style/Theme.Egobook"
         android:usesCleartextTraffic="true">
+
+        <meta-data
+            android:name="com.google.android.gms.ads.APPLICATION_ID"
+            android:value="${ADMOB_APP_ID}" />
         <activity
             android:name=".ui.login.view.IntroActivity"
             android:exported="true"
@@ -44,4 +48,4 @@
             tools:ignore="LockedOrientationActivity" />
     </application>
 
-</manifest>
+</manifest>

app/src/main/java/com/egobook/app/MainActivity.kt

@@ -1,6 +1,7 @@
 package com.egobook.app
 
 import android.os.Bundle
+import android.util.Log
 import android.view.View
 import androidx.activity.enableEdgeToEdge
 import androidx.appcompat.app.AppCompatActivity
@@ -10,6 +11,12 @@ import androidx.drawerlayout.widget.DrawerLayout
 import androidx.navigation.fragment.NavHostFragment
 import androidx.navigation.ui.setupWithNavController
 import com.egobook.app.databinding.ActivityMainBinding
+import com.google.android.gms.ads.AdRequest
+import com.google.android.gms.ads.LoadAdError
+import com.google.android.gms.ads.MobileAds
+import com.google.android.gms.ads.rewarded.RewardedAd
+import com.google.android.gms.ads.rewarded.RewardedAdLoadCallback
+import com.google.android.gms.ads.rewarded.ServerSideVerificationOptions
 import dagger.hilt.android.AndroidEntryPoint
 
 
@@ -19,9 +26,17 @@ class MainActivity : AppCompatActivity(), BlurController, NotificationController
         ActivityMainBinding.inflate(layoutInflater)
     }
 
+    private var rewardedAd: RewardedAd? = null
+    private val adUnitId = "ca-app-pub-3940256099942544/5224354917"
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         enableEdgeToEdge()
+
+        MobileAds.initialize(this) {}
+
+        loadAd()
+
         applyDefaultInsets(binding.main)
         applyDefaultInsets(binding.fcvNotificationDrawer)
         setContentView(binding.root)
@@ -75,6 +90,42 @@ class MainActivity : AppCompatActivity(), BlurController, NotificationController
         }
     }
 
+    private fun loadAd() {
+        val adRequest = AdRequest.Builder().build()
+        RewardedAd.load(this, adUnitId, adRequest, object : RewardedAdLoadCallback() {
+            override fun onAdFailedToLoad(adError: LoadAdError) {
+                rewardedAd = null
+                Log.d("AdMob", "광고 로드 실패")
+            }
+
+            override fun onAdLoaded(ad: RewardedAd) {
+                rewardedAd = ad
+                Log.d("AdMob", "광고 로드 성공!")
+            }
+        })
+    }
+
+    fun showAd(userId: String, onAdClosed: () -> Unit) {
+        if (rewardedAd != null) {
+
+            val ssvOptions = ServerSideVerificationOptions.Builder()
+                .setUserId(userId)
+
+            rewardedAd?.setServerSideVerificationOptions(ssvOptions.build())
+
+            rewardedAd?.show(this) { rewardItem ->
+                val rewardAmount = rewardItem.amount
+                val rewardType = rewardItem.type
+                Log.d("jang", "보상 지급! (서버로 콜백 날아감), $rewardType, rewardAmout: $rewardAmount")
+            }
+            onAdClosed()
+            rewardedAd = null
+            loadAd()
+        } else {
+            Log.d("jang", "아직 광고가 준비 안 됐어요. 잠시 후 다시 시도해주세요.")
+        }
+    }
+
     override fun activateBlur(blurLevel: BlurLevel) {
         binding.blurView.apply {
             setBlurEnabled(true)
@@ -93,4 +144,5 @@ class MainActivity : AppCompatActivity(), BlurController, NotificationController
     override fun closerDrawer() {
         binding.root.closeDrawer(binding.fcvNotificationDrawer)
     }
+
 }

app/src/main/java/com/egobook/app/di/module/RepositoryModule.kt

@@ -25,6 +25,7 @@ import com.egobook.app.ui.home.repository.NetworkHomeNotificationRepository
 import com.egobook.app.ui.home.repository.NetworkTendencyLevelService
 import com.egobook.app.ui.home.repository.NetworkUserRepository
 import com.egobook.app.ui.home.repository.UserActivityRepository
+import com.egobook.app.ui.home.repository.UserAdRepository
 import com.egobook.app.ui.home.repository.UserPsychologyRepository
 import com.egobook.app.ui.home.repository.UserRepository
 import com.egobook.app.ui.home.repository.UserTendencyRepository
@@ -84,6 +85,10 @@ abstract class RepositoryModule {
     @Singleton
     abstract fun bindActivityRecordRepository(impl: NetworkUserRepository): UserActivityRepository
 
+    @Binds
+    @Singleton
+    abstract fun bindAdRepository(impl: NetworkUserRepository): UserAdRepository
+
     @Binds
     @Singleton
     abstract fun bindPsychologyRepository(impl: NetworkUserRepository): UserPsychologyRepository

app/src/main/java/com/egobook/app/ui/home/HomeViewModel.kt

@@ -3,6 +3,8 @@ package com.egobook.app.ui.home
 import android.util.Log
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
+import com.egobook.app.ui.home.repository.AdInfoDto
+import com.egobook.app.ui.home.repository.UserAdRepository
 import com.egobook.app.ui.home.repository.UserPsychologyRepository
 import com.egobook.app.ui.home.repository.UserRepository
 import com.egobook.app.ui.home.user.Ink
@@ -11,8 +13,10 @@ import com.egobook.app.ui.home.user.User
 import com.egobook.app.ui.shop.CustomItem
 import com.egobook.app.ui.shop.StoreRepository
 import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.flow.MutableSharedFlow
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asSharedFlow
 import kotlinx.coroutines.flow.asStateFlow
 import kotlinx.coroutines.launch
 import javax.inject.Inject
@@ -21,20 +25,26 @@ import javax.inject.Inject
 class HomeViewModel @Inject constructor(
     private val userRepository: UserRepository,
     private val storeRepository: StoreRepository,
+    private val userAdRepository: UserAdRepository,
     private val psychologyRepository: UserPsychologyRepository
 ) : ViewModel() {
+    private val _uiState = MutableStateFlow(User(id=-1, Level(1), Ink(0)))
+    val uiState: StateFlow<User> = _uiState.asStateFlow()
+
+    private val _adState = MutableStateFlow(AdInfoDto(0, 0, false, 0, ""))
+    val adState: StateFlow<AdInfoDto> = _adState.asStateFlow()
+
+    private val _equippedItems = MutableStateFlow<List<CustomItem>>(emptyList())
+    val equippedItems: StateFlow<List<CustomItem>> = _equippedItems
+
+    private val _dailyPhycologyReadState = MutableStateFlow(false)
+    val dailyPhycologyReadState = _dailyPhycologyReadState.asStateFlow()
 
     init {
         fetchUser()
         fetchEquipItems()
         fetchDailyPhycologyReadState()
     }
-    private val _uiState = MutableStateFlow(User(Level(1), Ink(0)))
-    val uiState: StateFlow<User> = _uiState.asStateFlow()
-    private val _dailyPhycologyReadState = MutableStateFlow(false)
-    val dailyPhycologyReadState = _dailyPhycologyReadState.asStateFlow()
-    private val _equippedItems = MutableStateFlow<List<CustomItem>>(emptyList())
-    val equippedItems: StateFlow<List<CustomItem>> = _equippedItems
 
     fun fetchEquipItems() {
         viewModelScope.launch {
@@ -58,4 +68,19 @@ class HomeViewModel @Inject constructor(
             }
         }
     }
+
+    fun loadCurrentAdInfo() {
+        viewModelScope.launch {
+            val adInfo = userAdRepository.loadAdInfo()
+            _adState.value = adInfo
+        }
+    }
+
+    fun watchAd() {
+        viewModelScope.launch {
+            val message = userAdRepository.watchAd()
+            fetchUser()
+            Log.d("HomeViewModel", "Ad watched: $message")
+        }
+    }
 }

app/src/main/java/com/egobook/app/ui/home/repository/UserDto.kt

@@ -5,6 +5,7 @@ import com.egobook.app.ui.home.user.Level
 import com.egobook.app.ui.home.user.User
 
 data class UserDto(
+    val userId: Int,
     val nickname: String,
     val level: Int,
     val ink: Int,
@@ -13,5 +14,5 @@ data class UserDto(
     val isFirstAttendanceToday: Boolean,
     val attendanceRewardInk: Int
 ) {
-    fun toDomain(): User = User(Level(level), Ink(ink))
+    fun toDomain(): User = User(id = userId, Level(level), Ink(ink))
 }

app/src/main/java/com/egobook/app/ui/home/repository/UserRepository.kt

@@ -5,14 +5,22 @@ import com.egobook.app.di.qualifier.BackendApi
 import com.egobook.app.ui.home.user.Tendency
 import com.egobook.app.ui.home.user.User
 import retrofit2.Retrofit
+import retrofit2.http.Body
 import retrofit2.http.GET
+import retrofit2.http.POST
 import javax.inject.Inject
 import javax.inject.Singleton
 
 interface UserRepository {
     suspend fun load(): User
 }
 
+interface UserAdRepository {
+    suspend fun loadAdInfo(): AdInfoDto
+
+    suspend fun watchAd(): String
+}
+
 interface UserTendencyRepository {
     suspend fun loadTendencies(): List<Tendency>
 }
@@ -32,6 +40,36 @@ interface NetworkTendencyLevelService {
     suspend fun loadTendencyLevels(): BaseResponse<TendencyLevels>
 }
 
+data class AdRequestDto(
+    val rewardType: String,
+    val targetId: Int?,
+    val adUnitId: String = "ca-app-pub-test/12345"
+)
+
+data class AdResponseDto(
+    val code: String,
+    val message: String,
+    val status: Int
+)
+
+interface NetworkAdService {
+    @GET("/ads/info")
+    suspend fun loadAdInfo(): BaseResponse<AdInfoDto>
+
+    @POST("/ads/testReward")
+    suspend fun watchAd(
+        @Body adRequest: AdRequestDto
+    ): AdResponseDto
+}
+
+data class AdInfoDto(
+    val currentViewCount: Int,
+    val maxLimit: Int,
+    val isAvailable: Boolean,
+    val rewardPerAd: Int,
+    val message: String
+)
+
 data class PsychologyStateDto(
     val isBottleVisible: Boolean
 )
@@ -68,11 +106,13 @@ interface NetworkPsychologyService {
 @Singleton
 class NetworkUserRepository @Inject constructor(
     @BackendApi private val retrofit: Retrofit
-) : UserRepository, UserTendencyRepository, UserActivityRepository, UserPsychologyRepository {
+) : UserRepository, UserTendencyRepository, UserActivityRepository, UserPsychologyRepository, UserAdRepository {
     private val userService by lazy { retrofit.create(NetworkUserService::class.java) }
     private val tendencyLevelService by lazy { retrofit.create(NetworkTendencyLevelService::class.java) }
     private val activityRecordService by lazy { retrofit.create(NetworkActivityRecordService::class.java) }
 
+    private val networkAdService by lazy { retrofit.create(NetworkAdService::class.java) }
+
     private val psychologyService by lazy { retrofit.create(NetworkPsychologyService::class.java) }
 
     override suspend fun load(): User {
@@ -92,6 +132,20 @@ class NetworkUserRepository @Inject constructor(
         return activityRecordResponse.data.toDomain()
     }
 
+    override suspend fun loadAdInfo(): AdInfoDto {
+        val adInfoResponse: BaseResponse<AdInfoDto> = networkAdService.loadAdInfo()
+        return adInfoResponse.data
+    }
+
+    override suspend fun watchAd(): String {
+        val watchingAdResponse = networkAdService.watchAd(
+            AdRequestDto(
+                "INK", null
+            )
+        )
+        return watchingAdResponse.message
+    }
+
     override suspend fun isReadDailyPsychology(): Boolean {
         val psychologyResponse: BaseResponse<PsychologyStateDto> =
             psychologyService.isReadDailyPsychology()
@@ -104,4 +158,5 @@ class NetworkUserRepository @Inject constructor(
             psychologyService.loadDailyPsychology()
         return psychologyResponse.data
     }
+
 }