RelaSphere/Assets/LoginManager.cs

using System.Collections;
using System.Collections.Generic;
using System.Net;
using TMPro;
using UnityEngine;
using UnityEngine.Networking;
using UnityEngine.SceneManagement;

public class LoginManager : MonoBehaviour
{
    [SerializeField] private TextMeshProUGUI _loginName;
    [SerializeField] private TextMeshProUGUI _loginPassword;

    [SerializeField] private TextMeshProUGUI _regName;
    [SerializeField] private TextMeshProUGUI _regEmail;
    [SerializeField] private TextMeshProUGUI _regPassword;
    [SerializeField] private TextMeshProUGUI _regPassword2;

    [SerializeField] private GameObject startPanel;
    [SerializeField] private GameObject loginPanel;
    [SerializeField] private GameObject regPanel;

    [System.Serializable]
    class TempID
    {
        public int id;
    }

    public void TryReg()
    {
        StartCoroutine(RegisterReq());
    }

    public void TryLogin()
    {
        StartCoroutine(TryLoginReq());
    }

    private IEnumerator RegisterReq()
    {
        string url = "http://localhost:3000/api/RegUser";

        string fields = $@"{{ ""username"": ""{_regName.text}"",
                                ""email"": ""{_regEmail.text}"", 
                                ""password"": ""{_regPassword.text}""}}";

        
        using (UnityWebRequest www = UnityWebRequest.Put(url, fields))
        {
            www.method = "POST";
            www.SetRequestHeader("Content-Type", "application/json");
            yield return www.SendWebRequest();

            if (www.result != UnityWebRequest.Result.Success)
            {
                Debug.LogError(www.error);
            }
            else
            {
                string responseBody = www.downloadHandler.text;
                Debug.Log("Response: " + responseBody);
            }
        }
    }

    private IEnumerator TryLoginReq()
    {
        string url = "http://localhost:3000/api/TryLogin";
        url += $"?login={_loginName.text}&password={_loginPassword.text}";

        using (UnityWebRequest www = UnityWebRequest.Get(url))
        {
            www.method = "GET";
            www.SetRequestHeader("Content-Type", "application/json");
            yield return www.SendWebRequest();

            if (www.result != UnityWebRequest.Result.Success)
            {
                Debug.LogError(www.error);
            }
            else
            {
                string responseBody = www.downloadHandler.text;

                if (responseBody == "")
                {
                    Debug.Log("NoCorrect");
                }
                else
                {
                    TempID tempID = JsonUtility.FromJson<TempID>(responseBody);
                    Debug.Log("Response: " + tempID.id);
                    SceneManager.LoadScene("TempGameplay");
                }
               

            }
        }
    }
}