feat: 랭킹 기능 구현

app/src/main/java/com/ssafy/tiggle/data/datasource/remote/DonationApiService.kt

@@ -4,6 +4,7 @@ import com.ssafy.tiggle.data.model.BaseResponse
 import com.ssafy.tiggle.data.model.EmptyResponse
 import com.ssafy.tiggle.data.model.donation.DonationAccountDto
 import com.ssafy.tiggle.data.model.donation.DonationHistoryDto
+import com.ssafy.tiggle.data.model.donation.DonationRankDto
 import com.ssafy.tiggle.data.model.donation.DonationRequestDto
 import com.ssafy.tiggle.data.model.donation.DonationStatusDto
 import com.ssafy.tiggle.data.model.donation.DonationSummaryDto
@@ -33,4 +34,10 @@ interface DonationApiService {
 
     @POST("/api/donation")
     suspend fun createDonation(@Body request: DonationRequestDto): Response<BaseResponse<EmptyResponse>>
+
+    @GET("/api/donation/rank/university")
+    suspend fun getUniversityRanking(): Response<BaseResponse<List<DonationRankDto>>>
+
+    @GET("/api/donation/rank/department")
+    suspend fun getDepartmentRanking(): Response<BaseResponse<List<DonationRankDto>>>
 }

app/src/main/java/com/ssafy/tiggle/data/model/donation/DonationRankDto.kt

@@ -0,0 +1,10 @@
+package com.ssafy.tiggle.data.model.donation
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class DonationRankDto(
+    val rank: Int,
+    val name: String,
+    val amount: Int
+)

app/src/main/java/com/ssafy/tiggle/data/repository/DonationRepositoryImpl.kt

@@ -5,6 +5,7 @@ import com.ssafy.tiggle.data.model.donation.DonationRequestDto
 import com.ssafy.tiggle.domain.entity.donation.DonationAccount
 import com.ssafy.tiggle.domain.entity.donation.DonationCategory
 import com.ssafy.tiggle.domain.entity.donation.DonationHistory
+import com.ssafy.tiggle.domain.entity.donation.DonationRank
 import com.ssafy.tiggle.domain.entity.donation.DonationRequest
 import com.ssafy.tiggle.domain.entity.donation.DonationStatus
 import com.ssafy.tiggle.domain.entity.donation.DonationStatusType
@@ -133,4 +134,44 @@ class DonationRepositoryImpl @Inject constructor(
             Result.failure(e)
         }
     }
+
+    override suspend fun getUniversityRanking(): Result<List<DonationRank>> {
+        return try {
+            val response = donationApiService.getUniversityRanking()
+            if (response.isSuccessful && response.body()?.result == true) {
+                val rankingList = response.body()?.data?.map { dto ->
+                    DonationRank(
+                        rank = dto.rank,
+                        name = dto.name,
+                        amount = dto.amount
+                    )
+                } ?: emptyList()
+                Result.success(rankingList)
+            } else {
+                Result.failure(Exception("Failed to fetch university ranking"))
+            }
+        } catch (e: Exception) {
+            Result.failure(e)
+        }
+    }
+
+    override suspend fun getDepartmentRanking(): Result<List<DonationRank>> {
+        return try {
+            val response = donationApiService.getDepartmentRanking()
+            if (response.isSuccessful && response.body()?.result == true) {
+                val rankingList = response.body()?.data?.map { dto ->
+                    DonationRank(
+                        rank = dto.rank,
+                        amount = dto.amount,
+                        name = dto.name
+                    )
+                } ?: emptyList()
+                Result.success(rankingList)
+            } else {
+                Result.failure(Exception("Failed to fetch department ranking"))
+            }
+        } catch (e: Exception) {
+            Result.failure(e)
+        }
+    }
 }

app/src/main/java/com/ssafy/tiggle/domain/entity/donation/DonationRank.kt

@@ -0,0 +1,7 @@
+package com.ssafy.tiggle.domain.entity.donation
+
+data class DonationRank(
+    val rank: Int,
+    val name: String,
+    val amount: Int
+)

app/src/main/java/com/ssafy/tiggle/domain/repository/DonationRepository.kt

@@ -2,6 +2,7 @@ package com.ssafy.tiggle.domain.repository
 
 import com.ssafy.tiggle.domain.entity.donation.DonationAccount
 import com.ssafy.tiggle.domain.entity.donation.DonationHistory
+import com.ssafy.tiggle.domain.entity.donation.DonationRank
 import com.ssafy.tiggle.domain.entity.donation.DonationRequest
 import com.ssafy.tiggle.domain.entity.donation.DonationStatus
 import com.ssafy.tiggle.domain.entity.donation.DonationStatusType
@@ -13,4 +14,6 @@ interface DonationRepository {
     suspend fun getDonationStatus(type: DonationStatusType): Result<DonationStatus>
     suspend fun getDonationAccount(): Result<DonationAccount>
     suspend fun createDonation(request: DonationRequest): Result<Unit>
+    suspend fun getUniversityRanking(): Result<List<DonationRank>>
+    suspend fun getDepartmentRanking(): Result<List<DonationRank>>
 }

app/src/main/java/com/ssafy/tiggle/domain/usecase/donation/GetDepartmentRankingUseCase.kt

@@ -0,0 +1,13 @@
+package com.ssafy.tiggle.domain.usecase.donation
+
+import com.ssafy.tiggle.domain.entity.donation.DonationRank
+import com.ssafy.tiggle.domain.repository.DonationRepository
+import javax.inject.Inject
+
+class GetDepartmentRankingUseCase @Inject constructor(
+    private val donationRepository: DonationRepository
+) {
+    suspend operator fun invoke(): Result<List<DonationRank>> {
+        return donationRepository.getDepartmentRanking()
+    }
+}

app/src/main/java/com/ssafy/tiggle/domain/usecase/donation/GetUniversityRankingUseCase.kt

@@ -0,0 +1,13 @@
+package com.ssafy.tiggle.domain.usecase.donation
+
+import com.ssafy.tiggle.domain.entity.donation.DonationRank
+import com.ssafy.tiggle.domain.repository.DonationRepository
+import javax.inject.Inject
+
+class GetUniversityRankingUseCase @Inject constructor(
+    private val donationRepository: DonationRepository
+) {
+    suspend operator fun invoke(): Result<List<DonationRank>> {
+        return donationRepository.getUniversityRanking()
+    }
+}

app/src/main/java/com/ssafy/tiggle/presentation/navigation/NavigationGraph.kt

@@ -17,6 +17,7 @@ import androidx.navigation3.ui.rememberSceneSetupNavEntryDecorator
 import com.ssafy.tiggle.presentation.ui.auth.login.LoginScreen
 import com.ssafy.tiggle.presentation.ui.auth.signup.SignUpScreen
 import com.ssafy.tiggle.presentation.ui.donation.DonationHistoryScreen
+import com.ssafy.tiggle.presentation.ui.donation.DonationRankingScreen
 import com.ssafy.tiggle.presentation.ui.donation.DonationStatusScreen
 import com.ssafy.tiggle.presentation.ui.dutchpay.CreateDutchPayScreen
 import com.ssafy.tiggle.presentation.ui.dutchpay.DutchpayRecieveScreen
@@ -122,7 +123,7 @@ fun NavigationGraph(
                                 navBackStack.add(Screen.DonationStatus)
                             },
                             onDonationRankingClick = {
-                                // TODO: 기부 랭킹 화면 구현 시 추가
+                                navBackStack.add(Screen.DonationRanking)
                             }
                         )
                     }
@@ -220,6 +221,12 @@ fun NavigationGraph(
                         )
                     }
 
+                    is Screen.DonationRanking -> NavEntry(key) {
+                        DonationRankingScreen(
+                            onNavigateBack = { navBackStack.removeLastOrNull() }
+                        )
+                    }
+
                     is Screen.DutchPayStatus -> NavEntry(key) {
                         DutchPayStatusScreen(
                             onBackClick = { navBackStack.removeLastOrNull() },

app/src/main/java/com/ssafy/tiggle/presentation/navigation/Screen.kt

@@ -49,6 +49,9 @@ sealed interface Screen : NavKey {
     @Serializable
     object DonationStatus : Screen
 
+    @Serializable
+    object DonationRanking : Screen
+
     @Serializable
     data class DutchpayRecieve(val dutchPayId: Long) : Screen