feat/#8: 네트워크 결과 처리 기능 구현

data/src/main/java/org/sopt/and/data/common/NetworkResultHandler.kt

@@ -0,0 +1,45 @@
+package org.sopt.and.data.common
+
+import org.sopt.and.domain.exception.*
+import retrofit2.HttpException
+import java.net.ConnectException
+import java.net.SocketTimeoutException
+import java.net.UnknownHostException
+import org.json.JSONObject
+import org.json.JSONException
+
+inline fun <T> execute(block: () -> T): Result<T> = runCatching {
+    Result.Success(block())
+}.getOrElse {
+    Result.Error(handleNetworkError(it))
+}
+
+fun handleNetworkError(e: Throwable): NetworkError {
+    return when (e) {
+        is ConnectException -> ConnectError
+        is SocketTimeoutException -> TimeoutError
+        is UnknownHostException -> UnknownHostError
+        is HttpException -> mapHttpError(e)
+        else -> UnknownError
+    }
+}
+
+fun mapHttpError(e: HttpException): NetworkError {
+    return try {
+        val statusCode = e.code().toString()
+        val errorBody = e.response()?.errorBody()?.string()
+        val errorCode = extractErrorCode(errorBody).toString()
+        HttpCodeError(statusCode, errorCode)
+    } catch (ex: Exception) {
+        UnknownError
+    }
+}
+
+fun extractErrorCode(errorBody: String?): String? {
+    return try {
+        errorBody?.let { JSONObject(it).getString("code") }
+    } catch (e: JSONException) {
+        null
+    }
+}
+