feat/#8: network 상태 관리 위임하여 관리하는 기능 구현

presentation/src/main/java/org/sopt/and/presentation/delegate/NetworkDelegate.kt

@@ -0,0 +1,53 @@
+package org.sopt.and.presentation.delegate
+
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import org.sopt.and.domain.exception.HttpCodeError
+import org.sopt.and.domain.exception.NetworkError
+import org.sopt.and.domain.exception.UnknownError
+import javax.inject.Inject
+
+class NetworkDelegate @Inject constructor() {
+    private val _networkState = MutableStateFlow<NetworkState>(NetworkState.Loading)
+    val networkState: StateFlow<NetworkState> get() = _networkState.asStateFlow()
+
+    fun handleSignUpError(exception: NetworkError) {
+        val updatedException = when(exception){
+            is HttpCodeError -> {
+                when(exception.title) {
+                    "400" -> HttpCodeError(
+                        "요청에 문제가 있습니다. ",
+                        if (exception.message == "00") "유효하지 못한 요청입니다." else "8자를 넘기는 입력이 있습니다."
+                    )
+                    "404" -> HttpCodeError(
+                        "요청에 문제가 있습니다. ",
+                        "유효하지 못한 요청입니다."
+                    )
+                    "409" -> HttpCodeError(
+                        "요청에 문제가 있습니다. ",
+                        "이미 존재하는 username입니다."
+                    )
+                    else -> UnknownError
+                }
+            }
+            else -> exception
+        }
+        _networkState.value = NetworkState.Error(updatedException.title, updatedException.message)
+    }
+
+
+    fun handleNetworkSuccess(){
+        _networkState.value = NetworkState.Success
+    }
+
+    fun handleNetworkLoading(){
+        _networkState.value = NetworkState.Loading
+    }
+}
+
+sealed class NetworkState{
+    data object Loading: NetworkState()
+    data object Success: NetworkState()
+    data class Error(val title: String,val msg: String): NetworkState()
+}