feat: NetworkNamager

Diary/Model/DecodingManager.swift

@@ -21,4 +21,14 @@ final class DecodingManager {
 
         return decodedData
     }
+
+    static func decodeData<T: Decodable>(from data: Data) throws -> T {
+        let decoder = JSONDecoder()
+
+        guard let decodedData = try? decoder.decode(T.self, from: data) else {
+            throw DecodingError.decodingFailure
+        }
+
+        return decodedData
+    }
 }

Diary/Network/NetworkManager.swift

@@ -0,0 +1,56 @@
+//
+//  NetworkManager.swift
+//  Diary
+//
+//  Created by Max, Hemg on 2023/09/13.
+//
+
+import CoreLocation
+
+final class NetworkManager {
+    private var dataTask: URLSessionDataTask?
+
+    func fetchData(url: String, completionHandler: @escaping(Result<Data, APIError>) -> Void) {
+        guard let url = URL(string: url) else {
+            completionHandler(.failure(.invalidURL))
+            return
+        }
+
+        dataTask = URLSession.shared.dataTask(with: url) { data, response, error in
+            if error != nil {
+                completionHandler(.failure(.requestFail))
+            }
+
+            guard let httpResponse = response as? HTTPURLResponse, (200...299) ~= httpResponse.statusCode else {
+                completionHandler(.failure(.invalidData))
+                return
+            }
+
+            guard let data else {
+                completionHandler(.failure(.invalidData))
+                return
+            }
+
+            completionHandler(.success(data))
+        }
+        self.dataTask?.resume()
+    }
+
+    func fetchLocation(location: CLLocation, _ completionHandler: @escaping(Result<WeatherResult, APIError>) -> Void) {
+        let urlStr = "https://api.openweathermap.org/data/2.5/weather?lat=\(location.coordinate.latitude)&lon=\(location.coordinate.longitude)&appid=aaa5700cbd82d1a09e738731002f97be"
+
+        fetchData(url: urlStr) { result in
+            switch result {
+            case .success(let data):
+                do {
+                    let decodingData: WeatherResult = try DecodingManager.decodeData(from: data)
+                    completionHandler(.success(decodingData))
+                } catch {
+                    completionHandler(.failure(APIError.decodingFail))
+                }
+            case .failure(let error):
+                completionHandler(.failure(error))
+            }
+        }
+    }
+}