[FEATURE] #30 GetUserWithStarredCountUseCase 추가

domain/src/main/java/com/eshc/domain/model/User.kt

@@ -11,6 +11,7 @@ data class User(
     val bio : String = "",
     val publicRepos : Int = 0,
     val followers : Int = 0,
-    val following : Int = 0
+    val following : Int = 0,
+    val starred : Int = 0
 )
 

domain/src/main/java/com/eshc/domain/repository/UserRepository.kt

@@ -5,4 +5,6 @@ import io.reactivex.rxjava3.core.Single
 
 interface UserRepository {
     fun getUser() : Single<Result<User>>
+
+    fun getStarred() : Single<Result<Int>>
 }

domain/src/main/java/com/eshc/domain/usecase/user/GetUserWithStarredCountUseCase.kt

@@ -0,0 +1,31 @@
+package com.eshc.domain.usecase.user
+
+import com.eshc.domain.model.User
+import com.eshc.domain.repository.UserRepository
+import io.reactivex.rxjava3.core.Single
+import javax.inject.Inject
+
+class GetUserWithStarredCountUseCase  @Inject constructor(
+    private val userRepository: UserRepository,
+    private val getUserProfileUseCase: GetUserProfileUseCase
+) {
+    operator fun invoke() : Single<Result<User>> {
+        return try {
+            userRepository.getStarred()
+                .zipWith(getUserProfileUseCase()){ starred, user ->
+                    Result.success(
+                        user.getOrThrow().copy(
+                            starred = starred.getOrThrow()
+                        )
+                    )
+                }
+                .onErrorReturn {
+                    Result.failure(it.cause ?: Throwable())
+                }
+        } catch (e : Exception) {
+            Single.create {
+                Result.failure<String>(e)
+            }
+        }
+    }
+}