[Unity] API 호출 방법

public class WebManager : MonoBehaviour
{
    enum Method
    {
        POST,
        GET,
        UPDATE,
        DELETE
    }

    string _baseUrl = "https://localhost:44351/api";
    void Start()
    {
        TestResult res = new TestResult()
        {
            UserName = "tkddls",
            Score = 1,
        };

        SendPostRequest("ranking", res, (uwr) =>
        {
            Debug.Log("post 호출");
        });

        SendGetAllRequest("ranking", (uwr) =>
        {
            Debug.Log("get 호출");
        });
    }

    public void SendPostRequest(string url, object obj, Action<UnityWebRequest> callback)
    {
        StartCoroutine(CosendWebRequest(url, Enum.GetName(typeof(Method),Method.POST), obj, callback));
    }
    public void SendGetAllRequest(string url, Action<UnityWebRequest> callback)
    {
        StartCoroutine(CosendWebRequest(url, Enum.GetName(typeof(Method), Method.GET), null, callback));
    }

    IEnumerator CosendWebRequest(string url, string method, object obj, Action<UnityWebRequest> callback)
    {
        string sendUrl = $"{_baseUrl}/{url}/";

        byte[] jsonByte = null;

        if (obj != null)
        {
            string jsonStr = JsonUtility.ToJson(obj);
            jsonByte = Encoding.UTF8.GetBytes(jsonStr);
        }
        var uwr = new UnityWebRequest(sendUrl, method);

        uwr.uploadHandler = new UploadHandlerRaw(jsonByte);
        uwr.downloadHandler = new DownloadHandlerBuffer();
        uwr.SetRequestHeader("Content-Type", "application/json");

        yield return uwr.SendWebRequest();

        if (uwr.result != UnityWebRequest.Result.Success)
        {
            Debug.Log(uwr.result);   
        }
        else
        {
            Debug.Log(uwr.downloadHandler.text);
            callback.Invoke(uwr);
        }
    }
}