refactor: 외선, 내선, 상행, 하행 분리

Author: DoTheBestMayB

data/src/main/java/com/stop/data/remote/source/route/RouteRemoteDataSourceImpl.kt

@@ -108,7 +108,11 @@ internal class RouteRemoteDataSourceImpl @Inject constructor(
                 serviceName = "SearchLastTrainTimeByIDService",
                 stationId = stationId,
                 weekTag = weekType.divisionValue,
-                inOutTag = transportDirectionType.divisionValue,
+                inOutTag = when (transportDirectionType) {
+                    TransportDirectionType.INNER, TransportDirectionType.TO_END -> "1"
+                    TransportDirectionType.OUTER, TransportDirectionType.TO_FIRST -> "2"
+                    TransportDirectionType.UNKNOWN -> throw IllegalArgumentException()
+                },
             )
         ) {
             return when (this) {

domain/src/main/java/com/stop/domain/model/route/seoul/subway/TransportDirectionType.kt

@@ -1,7 +1,9 @@
 package com.stop.domain.model.route.seoul.subway
 
-enum class TransportDirectionType(val divisionValue: String) {
-    INNER("1"), // 내선, 상행, 기점 출발
-    OUTER("2"), // 외선, 하행, 종점 출발
-    UNKNOWN("-1") // 계산하지 않은 경우
+enum class TransportDirectionType {
+    INNER, // 내선
+    TO_FIRST, // 하행, 종점 출발
+    OUTER, // 외선
+    TO_END, // 상행, 기점 출발
+    UNKNOWN // 계산하지 않은 경우
 }

domain/src/main/java/com/stop/domain/usecase/nowlocation/GetSubwayTrainNowStationUseCaseImpl.kt

@@ -35,8 +35,8 @@ class GetSubwayTrainNowStationUseCaseImpl @Inject constructor(
         }
 
         return when (transportLastTime.transportDirectionType) {
-            TransportDirectionType.OUTER -> possibleTrains.first()
-            TransportDirectionType.INNER -> possibleTrains.last()
+            TransportDirectionType.OUTER, TransportDirectionType.TO_FIRST -> possibleTrains.first()
+            TransportDirectionType.INNER, TransportDirectionType.TO_END -> possibleTrains.last()
             TransportDirectionType.UNKNOWN -> throw ApiChangedException()
         }
     }

domain/src/main/java/com/stop/domain/usecase/route/GetLastTransportTimeUseCaseImpl.kt

@@ -273,9 +273,9 @@ internal class GetLastTransportTimeUseCaseImpl @Inject constructor(
             }
         } else {
             if (startStationIndex < endStationIndex) {
-                TransportDirectionType.OUTER
+                TransportDirectionType.TO_FIRST
             } else {
-                TransportDirectionType.INNER
+                TransportDirectionType.TO_END
             }
         }
     }
@@ -341,7 +341,7 @@ internal class GetLastTransportTimeUseCaseImpl @Inject constructor(
             destinationStationName = transportIdRequest.destinationStation.name,
             stationsUntilStart = listOf(),
             enableDestinationStation = listOf(),
-            transportDirectionType = TransportDirectionType.UNKNOWN,
+            transportDirectionType = TransportDirectionType.UNKNOWN, // TODO: 서울 버스의 상행, 하행 구현
         )
     }
 
@@ -503,9 +503,9 @@ internal class GetLastTransportTimeUseCaseImpl @Inject constructor(
         }
 
         if (startIndex < endIndex) {
-            return Pair(TransportDirectionType.INNER, startIndex)
+            return Pair(TransportDirectionType.TO_END, startIndex)
         }
-        return Pair(TransportDirectionType.OUTER, startIndex)
+        return Pair(TransportDirectionType.TO_FIRST, startIndex)
     }
 
     private suspend fun convertSeoulBusRouteId(